path: root/libwebrtc-screen-cast-sync.patch

From e0e925da71abb97a60d02716b18faa19a29fada6 Mon Sep 17 00:00:00 2001
From: Jan Grulich <jgrulich@redhat.com>
Date: Mon, 21 Feb 2022 15:34:52 +0100
Subject: WebRTC - screen cast sync


diff --git a/dom/media/webrtc/third_party_build/moz.build b/dom/media/webrtc/third_party_build/moz.build
index e4c7ba7..a42f913 100644
--- a/dom/media/webrtc/third_party_build/moz.build
+++ b/dom/media/webrtc/third_party_build/moz.build
@@ -63,6 +63,8 @@ webrtc_non_unified_sources = [
 
 if CONFIG["MOZ_WIDGET_TOOLKIT"] == "gtk":
     DIRS += ["../../../../third_party/pipewire/libpipewire"]
+    DIRS += ["../../../../third_party/drm/libdrm"]
+    DIRS += ["../../../../third_party/gbm/libgbm"]
 
 GN_DIRS += ["../../../../third_party/libwebrtc"]
 
diff --git a/third_party/drm/README b/third_party/drm/README
new file mode 100644
index 0000000..f68ed10
--- /dev/null
+++ b/third_party/drm/README
@@ -0,0 +1,4 @@
+Libdrm is a drm library wrapper needed to build and run Firefox with
+Pipewire support on Linux (https://gitlab.freedesktop.org/mesa/drm).
+
+libdrm directory stores headers of libdrm needed for build only.
diff --git a/third_party/drm/drm/drm.h b/third_party/drm/drm/drm.h
new file mode 100644
index 0000000..5e54c3a
--- /dev/null
+++ b/third_party/drm/drm/drm.h
@@ -0,0 +1,1193 @@
+/*
+ * Header for the Direct Rendering Manager
+ *
+ * Author: Rickard E. (Rik) Faith <faith@valinux.com>
+ *
+ * Acknowledgments:
+ * Dec 1999, Richard Henderson <rth@twiddle.net>, move to generic cmpxchg.
+ */
+
+/*
+ * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
+ * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
+ * All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef _DRM_H_
+#define _DRM_H_
+
+#if   defined(__linux__)
+
+#include <linux/types.h>
+#include <asm/ioctl.h>
+typedef unsigned int drm_handle_t;
+
+#else /* One of the BSDs */
+
+#include <stdint.h>
+#include <sys/ioccom.h>
+#include <sys/types.h>
+typedef int8_t   __s8;
+typedef uint8_t  __u8;
+typedef int16_t  __s16;
+typedef uint16_t __u16;
+typedef int32_t  __s32;
+typedef uint32_t __u32;
+typedef int64_t  __s64;
+typedef uint64_t __u64;
+typedef size_t   __kernel_size_t;
+typedef unsigned long drm_handle_t;
+
+#endif
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+#define DRM_NAME	"drm"	  /**< Name in kernel, /dev, and /proc */
+#define DRM_MIN_ORDER	5	  /**< At least 2^5 bytes = 32 bytes */
+#define DRM_MAX_ORDER	22	  /**< Up to 2^22 bytes = 4MB */
+#define DRM_RAM_PERCENT 10	  /**< How much system ram can we lock? */
+
+#define _DRM_LOCK_HELD	0x80000000U /**< Hardware lock is held */
+#define _DRM_LOCK_CONT	0x40000000U /**< Hardware lock is contended */
+#define _DRM_LOCK_IS_HELD(lock)	   ((lock) & _DRM_LOCK_HELD)
+#define _DRM_LOCK_IS_CONT(lock)	   ((lock) & _DRM_LOCK_CONT)
+#define _DRM_LOCKING_CONTEXT(lock) ((lock) & ~(_DRM_LOCK_HELD|_DRM_LOCK_CONT))
+
+typedef unsigned int drm_context_t;
+typedef unsigned int drm_drawable_t;
+typedef unsigned int drm_magic_t;
+
+/*
+ * Cliprect.
+ *
+ * \warning: If you change this structure, make sure you change
+ * XF86DRIClipRectRec in the server as well
+ *
+ * \note KW: Actually it's illegal to change either for
+ * backwards-compatibility reasons.
+ */
+struct drm_clip_rect {
+	unsigned short x1;
+	unsigned short y1;
+	unsigned short x2;
+	unsigned short y2;
+};
+
+/*
+ * Drawable information.
+ */
+struct drm_drawable_info {
+	unsigned int num_rects;
+	struct drm_clip_rect *rects;
+};
+
+/*
+ * Texture region,
+ */
+struct drm_tex_region {
+	unsigned char next;
+	unsigned char prev;
+	unsigned char in_use;
+	unsigned char padding;
+	unsigned int age;
+};
+
+/*
+ * Hardware lock.
+ *
+ * The lock structure is a simple cache-line aligned integer.  To avoid
+ * processor bus contention on a multiprocessor system, there should not be any
+ * other data stored in the same cache line.
+ */
+struct drm_hw_lock {
+	__volatile__ unsigned int lock;		/**< lock variable */
+	char padding[60];			/**< Pad to cache line */
+};
+
+/*
+ * DRM_IOCTL_VERSION ioctl argument type.
+ *
+ * \sa drmGetVersion().
+ */
+struct drm_version {
+	int version_major;	  /**< Major version */
+	int version_minor;	  /**< Minor version */
+	int version_patchlevel;	  /**< Patch level */
+	__kernel_size_t name_len;	  /**< Length of name buffer */
+	char *name;	  /**< Name of driver */
+	__kernel_size_t date_len;	  /**< Length of date buffer */
+	char *date;	  /**< User-space buffer to hold date */
+	__kernel_size_t desc_len;	  /**< Length of desc buffer */
+	char *desc;	  /**< User-space buffer to hold desc */
+};
+
+/*
+ * DRM_IOCTL_GET_UNIQUE ioctl argument type.
+ *
+ * \sa drmGetBusid() and drmSetBusId().
+ */
+struct drm_unique {
+	__kernel_size_t unique_len;	  /**< Length of unique */
+	char *unique;	  /**< Unique name for driver instantiation */
+};
+
+struct drm_list {
+	int count;		  /**< Length of user-space structures */
+	struct drm_version *version;
+};
+
+struct drm_block {
+	int unused;
+};
+
+/*
+ * DRM_IOCTL_CONTROL ioctl argument type.
+ *
+ * \sa drmCtlInstHandler() and drmCtlUninstHandler().
+ */
+struct drm_control {
+	enum {
+		DRM_ADD_COMMAND,
+		DRM_RM_COMMAND,
+		DRM_INST_HANDLER,
+		DRM_UNINST_HANDLER
+	} func;
+	int irq;
+};
+
+/*
+ * Type of memory to map.
+ */
+enum drm_map_type {
+	_DRM_FRAME_BUFFER = 0,	  /**< WC (no caching), no core dump */
+	_DRM_REGISTERS = 1,	  /**< no caching, no core dump */
+	_DRM_SHM = 2,		  /**< shared, cached */
+	_DRM_AGP = 3,		  /**< AGP/GART */
+	_DRM_SCATTER_GATHER = 4,  /**< Scatter/gather memory for PCI DMA */
+	_DRM_CONSISTENT = 5	  /**< Consistent memory for PCI DMA */
+};
+
+/*
+ * Memory mapping flags.
+ */
+enum drm_map_flags {
+	_DRM_RESTRICTED = 0x01,	     /**< Cannot be mapped to user-virtual */
+	_DRM_READ_ONLY = 0x02,
+	_DRM_LOCKED = 0x04,	     /**< shared, cached, locked */
+	_DRM_KERNEL = 0x08,	     /**< kernel requires access */
+	_DRM_WRITE_COMBINING = 0x10, /**< use write-combining if available */
+	_DRM_CONTAINS_LOCK = 0x20,   /**< SHM page that contains lock */
+	_DRM_REMOVABLE = 0x40,	     /**< Removable mapping */
+	_DRM_DRIVER = 0x80	     /**< Managed by driver */
+};
+
+struct drm_ctx_priv_map {
+	unsigned int ctx_id;	 /**< Context requesting private mapping */
+	void *handle;		 /**< Handle of map */
+};
+
+/*
+ * DRM_IOCTL_GET_MAP, DRM_IOCTL_ADD_MAP and DRM_IOCTL_RM_MAP ioctls
+ * argument type.
+ *
+ * \sa drmAddMap().
+ */
+struct drm_map {
+	unsigned long offset;	 /**< Requested physical address (0 for SAREA)*/
+	unsigned long size;	 /**< Requested physical size (bytes) */
+	enum drm_map_type type;	 /**< Type of memory to map */
+	enum drm_map_flags flags;	 /**< Flags */
+	void *handle;		 /**< User-space: "Handle" to pass to mmap() */
+				 /**< Kernel-space: kernel-virtual address */
+	int mtrr;		 /**< MTRR slot used */
+	/*   Private data */
+};
+
+/*
+ * DRM_IOCTL_GET_CLIENT ioctl argument type.
+ */
+struct drm_client {
+	int idx;		/**< Which client desired? */
+	int auth;		/**< Is client authenticated? */
+	unsigned long pid;	/**< Process ID */
+	unsigned long uid;	/**< User ID */
+	unsigned long magic;	/**< Magic */
+	unsigned long iocs;	/**< Ioctl count */
+};
+
+enum drm_stat_type {
+	_DRM_STAT_LOCK,
+	_DRM_STAT_OPENS,
+	_DRM_STAT_CLOSES,
+	_DRM_STAT_IOCTLS,
+	_DRM_STAT_LOCKS,
+	_DRM_STAT_UNLOCKS,
+	_DRM_STAT_VALUE,	/**< Generic value */
+	_DRM_STAT_BYTE,		/**< Generic byte counter (1024bytes/K) */
+	_DRM_STAT_COUNT,	/**< Generic non-byte counter (1000/k) */
+
+	_DRM_STAT_IRQ,		/**< IRQ */
+	_DRM_STAT_PRIMARY,	/**< Primary DMA bytes */
+	_DRM_STAT_SECONDARY,	/**< Secondary DMA bytes */
+	_DRM_STAT_DMA,		/**< DMA */
+	_DRM_STAT_SPECIAL,	/**< Special DMA (e.g., priority or polled) */
+	_DRM_STAT_MISSED	/**< Missed DMA opportunity */
+	    /* Add to the *END* of the list */
+};
+
+/*
+ * DRM_IOCTL_GET_STATS ioctl argument type.
+ */
+struct drm_stats {
+	unsigned long count;
+	struct {
+		unsigned long value;
+		enum drm_stat_type type;
+	} data[15];
+};
+
+/*
+ * Hardware locking flags.
+ */
+enum drm_lock_flags {
+	_DRM_LOCK_READY = 0x01,	     /**< Wait until hardware is ready for DMA */
+	_DRM_LOCK_QUIESCENT = 0x02,  /**< Wait until hardware quiescent */
+	_DRM_LOCK_FLUSH = 0x04,	     /**< Flush this context's DMA queue first */
+	_DRM_LOCK_FLUSH_ALL = 0x08,  /**< Flush all DMA queues first */
+	/* These *HALT* flags aren't supported yet
+	   -- they will be used to support the
+	   full-screen DGA-like mode. */
+	_DRM_HALT_ALL_QUEUES = 0x10, /**< Halt all current and future queues */
+	_DRM_HALT_CUR_QUEUES = 0x20  /**< Halt all current queues */
+};
+
+/*
+ * DRM_IOCTL_LOCK, DRM_IOCTL_UNLOCK and DRM_IOCTL_FINISH ioctl argument type.
+ *
+ * \sa drmGetLock() and drmUnlock().
+ */
+struct drm_lock {
+	int context;
+	enum drm_lock_flags flags;
+};
+
+/*
+ * DMA flags
+ *
+ * \warning
+ * These values \e must match xf86drm.h.
+ *
+ * \sa drm_dma.
+ */
+enum drm_dma_flags {
+	/* Flags for DMA buffer dispatch */
+	_DRM_DMA_BLOCK = 0x01,	      /**<
+				       * Block until buffer dispatched.
+				       *
+				       * \note The buffer may not yet have
+				       * been processed by the hardware --
+				       * getting a hardware lock with the
+				       * hardware quiescent will ensure
+				       * that the buffer has been
+				       * processed.
+				       */
+	_DRM_DMA_WHILE_LOCKED = 0x02, /**< Dispatch while lock held */
+	_DRM_DMA_PRIORITY = 0x04,     /**< High priority dispatch */
+
+	/* Flags for DMA buffer request */
+	_DRM_DMA_WAIT = 0x10,	      /**< Wait for free buffers */
+	_DRM_DMA_SMALLER_OK = 0x20,   /**< Smaller-than-requested buffers OK */
+	_DRM_DMA_LARGER_OK = 0x40     /**< Larger-than-requested buffers OK */
+};
+
+/*
+ * DRM_IOCTL_ADD_BUFS and DRM_IOCTL_MARK_BUFS ioctl argument type.
+ *
+ * \sa drmAddBufs().
+ */
+struct drm_buf_desc {
+	int count;		 /**< Number of buffers of this size */
+	int size;		 /**< Size in bytes */
+	int low_mark;		 /**< Low water mark */
+	int high_mark;		 /**< High water mark */
+	enum {
+		_DRM_PAGE_ALIGN = 0x01,	/**< Align on page boundaries for DMA */
+		_DRM_AGP_BUFFER = 0x02,	/**< Buffer is in AGP space */
+		_DRM_SG_BUFFER = 0x04,	/**< Scatter/gather memory buffer */
+		_DRM_FB_BUFFER = 0x08,	/**< Buffer is in frame buffer */
+		_DRM_PCI_BUFFER_RO = 0x10 /**< Map PCI DMA buffer read-only */
+	} flags;
+	unsigned long agp_start; /**<
+				  * Start address of where the AGP buffers are
+				  * in the AGP aperture
+				  */
+};
+
+/*
+ * DRM_IOCTL_INFO_BUFS ioctl argument type.
+ */
+struct drm_buf_info {
+	int count;		/**< Entries in list */
+	struct drm_buf_desc *list;
+};
+
+/*
+ * DRM_IOCTL_FREE_BUFS ioctl argument type.
+ */
+struct drm_buf_free {
+	int count;
+	int *list;
+};
+
+/*
+ * Buffer information
+ *
+ * \sa drm_buf_map.
+ */
+struct drm_buf_pub {
+	int idx;		       /**< Index into the master buffer list */
+	int total;		       /**< Buffer size */
+	int used;		       /**< Amount of buffer in use (for DMA) */
+	void *address;	       /**< Address of buffer */
+};
+
+/*
+ * DRM_IOCTL_MAP_BUFS ioctl argument type.
+ */
+struct drm_buf_map {
+	int count;		/**< Length of the buffer list */
+#ifdef __cplusplus
+	void *virt;
+#else
+	void *virtual;		/**< Mmap'd area in user-virtual */
+#endif
+	struct drm_buf_pub *list;	/**< Buffer information */
+};
+
+/*
+ * DRM_IOCTL_DMA ioctl argument type.
+ *
+ * Indices here refer to the offset into the buffer list in drm_buf_get.
+ *
+ * \sa drmDMA().
+ */
+struct drm_dma {
+	int context;			  /**< Context handle */
+	int send_count;			  /**< Number of buffers to send */
+	int *send_indices;	  /**< List of handles to buffers */
+	int *send_sizes;		  /**< Lengths of data to send */
+	enum drm_dma_flags flags;	  /**< Flags */
+	int request_count;		  /**< Number of buffers requested */
+	int request_size;		  /**< Desired size for buffers */
+	int *request_indices;	  /**< Buffer information */
+	int *request_sizes;
+	int granted_count;		  /**< Number of buffers granted */
+};
+
+enum drm_ctx_flags {
+	_DRM_CONTEXT_PRESERVED = 0x01,
+	_DRM_CONTEXT_2DONLY = 0x02
+};
+
+/*
+ * DRM_IOCTL_ADD_CTX ioctl argument type.
+ *
+ * \sa drmCreateContext() and drmDestroyContext().
+ */
+struct drm_ctx {
+	drm_context_t handle;
+	enum drm_ctx_flags flags;
+};
+
+/*
+ * DRM_IOCTL_RES_CTX ioctl argument type.
+ */
+struct drm_ctx_res {
+	int count;
+	struct drm_ctx *contexts;
+};
+
+/*
+ * DRM_IOCTL_ADD_DRAW and DRM_IOCTL_RM_DRAW ioctl argument type.
+ */
+struct drm_draw {
+	drm_drawable_t handle;
+};
+
+/*
+ * DRM_IOCTL_UPDATE_DRAW ioctl argument type.
+ */
+typedef enum {
+	DRM_DRAWABLE_CLIPRECTS
+} drm_drawable_info_type_t;
+
+struct drm_update_draw {
+	drm_drawable_t handle;
+	unsigned int type;
+	unsigned int num;
+	unsigned long long data;
+};
+
+/*
+ * DRM_IOCTL_GET_MAGIC and DRM_IOCTL_AUTH_MAGIC ioctl argument type.
+ */
+struct drm_auth {
+	drm_magic_t magic;
+};
+
+/*
+ * DRM_IOCTL_IRQ_BUSID ioctl argument type.
+ *
+ * \sa drmGetInterruptFromBusID().
+ */
+struct drm_irq_busid {
+	int irq;	/**< IRQ number */
+	int busnum;	/**< bus number */
+	int devnum;	/**< device number */
+	int funcnum;	/**< function number */
+};
+
+enum drm_vblank_seq_type {
+	_DRM_VBLANK_ABSOLUTE = 0x0,	/**< Wait for specific vblank sequence number */
+	_DRM_VBLANK_RELATIVE = 0x1,	/**< Wait for given number of vblanks */
+	/* bits 1-6 are reserved for high crtcs */
+	_DRM_VBLANK_HIGH_CRTC_MASK = 0x0000003e,
+	_DRM_VBLANK_EVENT = 0x4000000,   /**< Send event instead of blocking */
+	_DRM_VBLANK_FLIP = 0x8000000,   /**< Scheduled buffer swap should flip */
+	_DRM_VBLANK_NEXTONMISS = 0x10000000,	/**< If missed, wait for next vblank */
+	_DRM_VBLANK_SECONDARY = 0x20000000,	/**< Secondary display controller */
+	_DRM_VBLANK_SIGNAL = 0x40000000	/**< Send signal instead of blocking, unsupported */
+};
+#define _DRM_VBLANK_HIGH_CRTC_SHIFT 1
+
+#define _DRM_VBLANK_TYPES_MASK (_DRM_VBLANK_ABSOLUTE | _DRM_VBLANK_RELATIVE)
+#define _DRM_VBLANK_FLAGS_MASK (_DRM_VBLANK_EVENT | _DRM_VBLANK_SIGNAL | \
+				_DRM_VBLANK_SECONDARY | _DRM_VBLANK_NEXTONMISS)
+
+struct drm_wait_vblank_request {
+	enum drm_vblank_seq_type type;
+	unsigned int sequence;
+	unsigned long signal;
+};
+
+struct drm_wait_vblank_reply {
+	enum drm_vblank_seq_type type;
+	unsigned int sequence;
+	long tval_sec;
+	long tval_usec;
+};
+
+/*
+ * DRM_IOCTL_WAIT_VBLANK ioctl argument type.
+ *
+ * \sa drmWaitVBlank().
+ */
+union drm_wait_vblank {
+	struct drm_wait_vblank_request request;
+	struct drm_wait_vblank_reply reply;
+};
+
+#define _DRM_PRE_MODESET 1
+#define _DRM_POST_MODESET 2
+
+/*
+ * DRM_IOCTL_MODESET_CTL ioctl argument type
+ *
+ * \sa drmModesetCtl().
+ */
+struct drm_modeset_ctl {
+	__u32 crtc;
+	__u32 cmd;
+};
+
+/*
+ * DRM_IOCTL_AGP_ENABLE ioctl argument type.
+ *
+ * \sa drmAgpEnable().
+ */
+struct drm_agp_mode {
+	unsigned long mode;	/**< AGP mode */
+};
+
+/*
+ * DRM_IOCTL_AGP_ALLOC and DRM_IOCTL_AGP_FREE ioctls argument type.
+ *
+ * \sa drmAgpAlloc() and drmAgpFree().
+ */
+struct drm_agp_buffer {
+	unsigned long size;	/**< In bytes -- will round to page boundary */
+	unsigned long handle;	/**< Used for binding / unbinding */
+	unsigned long type;	/**< Type of memory to allocate */
+	unsigned long physical;	/**< Physical used by i810 */
+};
+
+/*
+ * DRM_IOCTL_AGP_BIND and DRM_IOCTL_AGP_UNBIND ioctls argument type.
+ *
+ * \sa drmAgpBind() and drmAgpUnbind().
+ */
+struct drm_agp_binding {
+	unsigned long handle;	/**< From drm_agp_buffer */
+	unsigned long offset;	/**< In bytes -- will round to page boundary */
+};
+
+/*
+ * DRM_IOCTL_AGP_INFO ioctl argument type.
+ *
+ * \sa drmAgpVersionMajor(), drmAgpVersionMinor(), drmAgpGetMode(),
+ * drmAgpBase(), drmAgpSize(), drmAgpMemoryUsed(), drmAgpMemoryAvail(),
+ * drmAgpVendorId() and drmAgpDeviceId().
+ */
+struct drm_agp_info {
+	int agp_version_major;
+	int agp_version_minor;
+	unsigned long mode;
+	unsigned long aperture_base;	/* physical address */
+	unsigned long aperture_size;	/* bytes */
+	unsigned long memory_allowed;	/* bytes */
+	unsigned long memory_used;
+
+	/* PCI information */
+	unsigned short id_vendor;
+	unsigned short id_device;
+};
+
+/*
+ * DRM_IOCTL_SG_ALLOC ioctl argument type.
+ */
+struct drm_scatter_gather {
+	unsigned long size;	/**< In bytes -- will round to page boundary */
+	unsigned long handle;	/**< Used for mapping / unmapping */
+};
+
+/*
+ * DRM_IOCTL_SET_VERSION ioctl argument type.
+ */
+struct drm_set_version {
+	int drm_di_major;
+	int drm_di_minor;
+	int drm_dd_major;
+	int drm_dd_minor;
+};
+
+/* DRM_IOCTL_GEM_CLOSE ioctl argument type */
+struct drm_gem_close {
+	/** Handle of the object to be closed. */
+	__u32 handle;
+	__u32 pad;
+};
+
+/* DRM_IOCTL_GEM_FLINK ioctl argument type */
+struct drm_gem_flink {
+	/** Handle for the object being named */
+	__u32 handle;
+
+	/** Returned global name */
+	__u32 name;
+};
+
+/* DRM_IOCTL_GEM_OPEN ioctl argument type */
+struct drm_gem_open {
+	/** Name of object being opened */
+	__u32 name;
+
+	/** Returned handle for the object */
+	__u32 handle;
+
+	/** Returned size of the object */
+	__u64 size;
+};
+
+/**
+ * DRM_CAP_DUMB_BUFFER
+ *
+ * If set to 1, the driver supports creating dumb buffers via the
+ * &DRM_IOCTL_MODE_CREATE_DUMB ioctl.
+ */
+#define DRM_CAP_DUMB_BUFFER		0x1
+/**
+ * DRM_CAP_VBLANK_HIGH_CRTC
+ *
+ * If set to 1, the kernel supports specifying a :ref:`CRTC index<crtc_index>`
+ * in the high bits of &drm_wait_vblank_request.type.
+ *
+ * Starting kernel version 2.6.39, this capability is always set to 1.
+ */
+#define DRM_CAP_VBLANK_HIGH_CRTC	0x2
+/**
+ * DRM_CAP_DUMB_PREFERRED_DEPTH
+ *
+ * The preferred bit depth for dumb buffers.
+ *
+ * The bit depth is the number of bits used to indicate the color of a single
+ * pixel excluding any padding. This is different from the number of bits per
+ * pixel. For instance, XRGB8888 has a bit depth of 24 but has 32 bits per
+ * pixel.
+ *
+ * Note that this preference only applies to dumb buffers, it's irrelevant for
+ * other types of buffers.
+ */
+#define DRM_CAP_DUMB_PREFERRED_DEPTH	0x3
+/**
+ * DRM_CAP_DUMB_PREFER_SHADOW
+ *
+ * If set to 1, the driver prefers userspace to render to a shadow buffer
+ * instead of directly rendering to a dumb buffer. For best speed, userspace
+ * should do streaming ordered memory copies into the dumb buffer and never
+ * read from it.
+ *
+ * Note that this preference only applies to dumb buffers, it's irrelevant for
+ * other types of buffers.
+ */
+#define DRM_CAP_DUMB_PREFER_SHADOW	0x4
+/**
+ * DRM_CAP_PRIME
+ *
+ * Bitfield of supported PRIME sharing capabilities. See &DRM_PRIME_CAP_IMPORT
+ * and &DRM_PRIME_CAP_EXPORT.
+ *
+ * PRIME buffers are exposed as dma-buf file descriptors. See
+ * Documentation/gpu/drm-mm.rst, section "PRIME Buffer Sharing".
+ */
+#define DRM_CAP_PRIME			0x5
+/**
+ * DRM_PRIME_CAP_IMPORT
+ *
+ * If this bit is set in &DRM_CAP_PRIME, the driver supports importing PRIME
+ * buffers via the &DRM_IOCTL_PRIME_FD_TO_HANDLE ioctl.
+ */
+#define  DRM_PRIME_CAP_IMPORT		0x1
+/**
+ * DRM_PRIME_CAP_EXPORT
+ *
+ * If this bit is set in &DRM_CAP_PRIME, the driver supports exporting PRIME
+ * buffers via the &DRM_IOCTL_PRIME_HANDLE_TO_FD ioctl.
+ */
+#define  DRM_PRIME_CAP_EXPORT		0x2
+/**
+ * DRM_CAP_TIMESTAMP_MONOTONIC
+ *
+ * If set to 0, the kernel will report timestamps with ``CLOCK_REALTIME`` in
+ * struct drm_event_vblank. If set to 1, the kernel will report timestamps with
+ * ``CLOCK_MONOTONIC``. See ``clock_gettime(2)`` for the definition of these
+ * clocks.
+ *
+ * Starting from kernel version 2.6.39, the default value for this capability
+ * is 1. Starting kernel version 4.15, this capability is always set to 1.
+ */
+#define DRM_CAP_TIMESTAMP_MONOTONIC	0x6
+/**
+ * DRM_CAP_ASYNC_PAGE_FLIP
+ *
+ * If set to 1, the driver supports &DRM_MODE_PAGE_FLIP_ASYNC.
+ */
+#define DRM_CAP_ASYNC_PAGE_FLIP		0x7
+/**
+ * DRM_CAP_CURSOR_WIDTH
+ *
+ * The ``CURSOR_WIDTH`` and ``CURSOR_HEIGHT`` capabilities return a valid
+ * width x height combination for the hardware cursor. The intention is that a
+ * hardware agnostic userspace can query a cursor plane size to use.
+ *
+ * Note that the cross-driver contract is to merely return a valid size;
+ * drivers are free to attach another meaning on top, eg. i915 returns the
+ * maximum plane size.
+ */
+#define DRM_CAP_CURSOR_WIDTH		0x8
+/**
+ * DRM_CAP_CURSOR_HEIGHT
+ *
+ * See &DRM_CAP_CURSOR_WIDTH.
+ */
+#define DRM_CAP_CURSOR_HEIGHT		0x9
+/**
+ * DRM_CAP_ADDFB2_MODIFIERS
+ *
+ * If set to 1, the driver supports supplying modifiers in the
+ * &DRM_IOCTL_MODE_ADDFB2 ioctl.
+ */
+#define DRM_CAP_ADDFB2_MODIFIERS	0x10
+/**
+ * DRM_CAP_PAGE_FLIP_TARGET
+ *
+ * If set to 1, the driver supports the &DRM_MODE_PAGE_FLIP_TARGET_ABSOLUTE and
+ * &DRM_MODE_PAGE_FLIP_TARGET_RELATIVE flags in
+ * &drm_mode_crtc_page_flip_target.flags for the &DRM_IOCTL_MODE_PAGE_FLIP
+ * ioctl.
+ */
+#define DRM_CAP_PAGE_FLIP_TARGET	0x11
+/**
+ * DRM_CAP_CRTC_IN_VBLANK_EVENT
+ *
+ * If set to 1, the kernel supports reporting the CRTC ID in
+ * &drm_event_vblank.crtc_id for the &DRM_EVENT_VBLANK and
+ * &DRM_EVENT_FLIP_COMPLETE events.
+ *
+ * Starting kernel version 4.12, this capability is always set to 1.
+ */
+#define DRM_CAP_CRTC_IN_VBLANK_EVENT	0x12
+/**
+ * DRM_CAP_SYNCOBJ
+ *
+ * If set to 1, the driver supports sync objects. See
+ * Documentation/gpu/drm-mm.rst, section "DRM Sync Objects".
+ */
+#define DRM_CAP_SYNCOBJ		0x13
+/**
+ * DRM_CAP_SYNCOBJ_TIMELINE
+ *
+ * If set to 1, the driver supports timeline operations on sync objects. See
+ * Documentation/gpu/drm-mm.rst, section "DRM Sync Objects".
+ */
+#define DRM_CAP_SYNCOBJ_TIMELINE	0x14
+
+/* DRM_IOCTL_GET_CAP ioctl argument type */
+struct drm_get_cap {
+	__u64 capability;
+	__u64 value;
+};
+
+/**
+ * DRM_CLIENT_CAP_STEREO_3D
+ *
+ * If set to 1, the DRM core will expose the stereo 3D capabilities of the
+ * monitor by advertising the supported 3D layouts in the flags of struct
+ * drm_mode_modeinfo. See ``DRM_MODE_FLAG_3D_*``.
+ *
+ * This capability is always supported for all drivers starting from kernel
+ * version 3.13.
+ */
+#define DRM_CLIENT_CAP_STEREO_3D	1
+
+/**
+ * DRM_CLIENT_CAP_UNIVERSAL_PLANES
+ *
+ * If set to 1, the DRM core will expose all planes (overlay, primary, and
+ * cursor) to userspace.
+ *
+ * This capability has been introduced in kernel version 3.15. Starting from
+ * kernel version 3.17, this capability is always supported for all drivers.
+ */
+#define DRM_CLIENT_CAP_UNIVERSAL_PLANES  2
+
+/**
+ * DRM_CLIENT_CAP_ATOMIC
+ *
+ * If set to 1, the DRM core will expose atomic properties to userspace. This
+ * implicitly enables &DRM_CLIENT_CAP_UNIVERSAL_PLANES and
+ * &DRM_CLIENT_CAP_ASPECT_RATIO.
+ *
+ * If the driver doesn't support atomic mode-setting, enabling this capability
+ * will fail with -EOPNOTSUPP.
+ *
+ * This capability has been introduced in kernel version 4.0. Starting from
+ * kernel version 4.2, this capability is always supported for atomic-capable
+ * drivers.
+ */
+#define DRM_CLIENT_CAP_ATOMIC	3
+
+/**
+ * DRM_CLIENT_CAP_ASPECT_RATIO
+ *
+ * If set to 1, the DRM core will provide aspect ratio information in modes.
+ * See ``DRM_MODE_FLAG_PIC_AR_*``.
+ *
+ * This capability is always supported for all drivers starting from kernel
+ * version 4.18.
+ */
+#define DRM_CLIENT_CAP_ASPECT_RATIO    4
+
+/**
+ * DRM_CLIENT_CAP_WRITEBACK_CONNECTORS
+ *
+ * If set to 1, the DRM core will expose special connectors to be used for
+ * writing back to memory the scene setup in the commit. The client must enable
+ * &DRM_CLIENT_CAP_ATOMIC first.
+ *
+ * This capability is always supported for atomic-capable drivers starting from
+ * kernel version 4.19.
+ */
+#define DRM_CLIENT_CAP_WRITEBACK_CONNECTORS	5
+
+/* DRM_IOCTL_SET_CLIENT_CAP ioctl argument type */
+struct drm_set_client_cap {
+	__u64 capability;
+	__u64 value;
+};
+
+#define DRM_RDWR O_RDWR
+#define DRM_CLOEXEC O_CLOEXEC
+struct drm_prime_handle {
+	__u32 handle;
+
+	/** Flags.. only applicable for handle->fd */
+	__u32 flags;
+
+	/** Returned dmabuf file descriptor */
+	__s32 fd;
+};
+
+struct drm_syncobj_create {
+	__u32 handle;
+#define DRM_SYNCOBJ_CREATE_SIGNALED (1 << 0)
+	__u32 flags;
+};
+
+struct drm_syncobj_destroy {
+	__u32 handle;
+	__u32 pad;
+};
+
+#define DRM_SYNCOBJ_FD_TO_HANDLE_FLAGS_IMPORT_SYNC_FILE (1 << 0)
+#define DRM_SYNCOBJ_HANDLE_TO_FD_FLAGS_EXPORT_SYNC_FILE (1 << 0)
+struct drm_syncobj_handle {
+	__u32 handle;
+	__u32 flags;
+
+	__s32 fd;
+	__u32 pad;
+};
+
+struct drm_syncobj_transfer {
+	__u32 src_handle;
+	__u32 dst_handle;
+	__u64 src_point;
+	__u64 dst_point;
+	__u32 flags;
+	__u32 pad;
+};
+
+#define DRM_SYNCOBJ_WAIT_FLAGS_WAIT_ALL (1 << 0)
+#define DRM_SYNCOBJ_WAIT_FLAGS_WAIT_FOR_SUBMIT (1 << 1)
+#define DRM_SYNCOBJ_WAIT_FLAGS_WAIT_AVAILABLE (1 << 2) /* wait for time point to become available */
+struct drm_syncobj_wait {
+	__u64 handles;
+	/* absolute timeout */
+	__s64 timeout_nsec;
+	__u32 count_handles;
+	__u32 flags;
+	__u32 first_signaled; /* only valid when not waiting all */
+	__u32 pad;
+};
+
+struct drm_syncobj_timeline_wait {
+	__u64 handles;
+	/* wait on specific timeline point for every handles*/
+	__u64 points;
+	/* absolute timeout */
+	__s64 timeout_nsec;
+	__u32 count_handles;
+	__u32 flags;
+	__u32 first_signaled; /* only valid when not waiting all */
+	__u32 pad;
+};
+
+
+struct drm_syncobj_array {
+	__u64 handles;
+	__u32 count_handles;
+	__u32 pad;
+};
+
+#define DRM_SYNCOBJ_QUERY_FLAGS_LAST_SUBMITTED (1 << 0) /* last available point on timeline syncobj */
+struct drm_syncobj_timeline_array {
+	__u64 handles;
+	__u64 points;
+	__u32 count_handles;
+	__u32 flags;
+};
+
+
+/* Query current scanout sequence number */
+struct drm_crtc_get_sequence {
+	__u32 crtc_id;		/* requested crtc_id */
+	__u32 active;		/* return: crtc output is active */
+	__u64 sequence;		/* return: most recent vblank sequence */
+	__s64 sequence_ns;	/* return: most recent time of first pixel out */
+};
+
+/* Queue event to be delivered at specified sequence. Time stamp marks
+ * when the first pixel of the refresh cycle leaves the display engine
+ * for the display
+ */
+#define DRM_CRTC_SEQUENCE_RELATIVE		0x00000001	/* sequence is relative to current */
+#define DRM_CRTC_SEQUENCE_NEXT_ON_MISS		0x00000002	/* Use next sequence if we've missed */
+
+struct drm_crtc_queue_sequence {
+	__u32 crtc_id;
+	__u32 flags;
+	__u64 sequence;		/* on input, target sequence. on output, actual sequence */
+	__u64 user_data;	/* user data passed to event */
+};
+
+#if defined(__cplusplus)
+}
+#endif
+
+#include "drm_mode.h"
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+#define DRM_IOCTL_BASE			'd'
+#define DRM_IO(nr)			_IO(DRM_IOCTL_BASE,nr)
+#define DRM_IOR(nr,type)		_IOR(DRM_IOCTL_BASE,nr,type)
+#define DRM_IOW(nr,type)		_IOW(DRM_IOCTL_BASE,nr,type)
+#define DRM_IOWR(nr,type)		_IOWR(DRM_IOCTL_BASE,nr,type)
+
+#define DRM_IOCTL_VERSION		DRM_IOWR(0x00, struct drm_version)
+#define DRM_IOCTL_GET_UNIQUE		DRM_IOWR(0x01, struct drm_unique)
+#define DRM_IOCTL_GET_MAGIC		DRM_IOR( 0x02, struct drm_auth)
+#define DRM_IOCTL_IRQ_BUSID		DRM_IOWR(0x03, struct drm_irq_busid)
+#define DRM_IOCTL_GET_MAP               DRM_IOWR(0x04, struct drm_map)
+#define DRM_IOCTL_GET_CLIENT            DRM_IOWR(0x05, struct drm_client)
+#define DRM_IOCTL_GET_STATS             DRM_IOR( 0x06, struct drm_stats)
+#define DRM_IOCTL_SET_VERSION		DRM_IOWR(0x07, struct drm_set_version)
+#define DRM_IOCTL_MODESET_CTL           DRM_IOW(0x08, struct drm_modeset_ctl)
+#define DRM_IOCTL_GEM_CLOSE		DRM_IOW (0x09, struct drm_gem_close)
+#define DRM_IOCTL_GEM_FLINK		DRM_IOWR(0x0a, struct drm_gem_flink)
+#define DRM_IOCTL_GEM_OPEN		DRM_IOWR(0x0b, struct drm_gem_open)
+#define DRM_IOCTL_GET_CAP		DRM_IOWR(0x0c, struct drm_get_cap)
+#define DRM_IOCTL_SET_CLIENT_CAP	DRM_IOW( 0x0d, struct drm_set_client_cap)
+
+#define DRM_IOCTL_SET_UNIQUE		DRM_IOW( 0x10, struct drm_unique)
+#define DRM_IOCTL_AUTH_MAGIC		DRM_IOW( 0x11, struct drm_auth)
+#define DRM_IOCTL_BLOCK			DRM_IOWR(0x12, struct drm_block)
+#define DRM_IOCTL_UNBLOCK		DRM_IOWR(0x13, struct drm_block)
+#define DRM_IOCTL_CONTROL		DRM_IOW( 0x14, struct drm_control)
+#define DRM_IOCTL_ADD_MAP		DRM_IOWR(0x15, struct drm_map)
+#define DRM_IOCTL_ADD_BUFS		DRM_IOWR(0x16, struct drm_buf_desc)
+#define DRM_IOCTL_MARK_BUFS		DRM_IOW( 0x17, struct drm_buf_desc)
+#define DRM_IOCTL_INFO_BUFS		DRM_IOWR(0x18, struct drm_buf_info)
+#define DRM_IOCTL_MAP_BUFS		DRM_IOWR(0x19, struct drm_buf_map)
+#define DRM_IOCTL_FREE_BUFS		DRM_IOW( 0x1a, struct drm_buf_free)
+
+#define DRM_IOCTL_RM_MAP		DRM_IOW( 0x1b, struct drm_map)
+
+#define DRM_IOCTL_SET_SAREA_CTX		DRM_IOW( 0x1c, struct drm_ctx_priv_map)
+#define DRM_IOCTL_GET_SAREA_CTX 	DRM_IOWR(0x1d, struct drm_ctx_priv_map)
+
+#define DRM_IOCTL_SET_MASTER            DRM_IO(0x1e)
+#define DRM_IOCTL_DROP_MASTER           DRM_IO(0x1f)
+
+#define DRM_IOCTL_ADD_CTX		DRM_IOWR(0x20, struct drm_ctx)
+#define DRM_IOCTL_RM_CTX		DRM_IOWR(0x21, struct drm_ctx)
+#define DRM_IOCTL_MOD_CTX		DRM_IOW( 0x22, struct drm_ctx)
+#define DRM_IOCTL_GET_CTX		DRM_IOWR(0x23, struct drm_ctx)
+#define DRM_IOCTL_SWITCH_CTX		DRM_IOW( 0x24, struct drm_ctx)
+#define DRM_IOCTL_NEW_CTX		DRM_IOW( 0x25, struct drm_ctx)
+#define DRM_IOCTL_RES_CTX		DRM_IOWR(0x26, struct drm_ctx_res)
+#define DRM_IOCTL_ADD_DRAW		DRM_IOWR(0x27, struct drm_draw)
+#define DRM_IOCTL_RM_DRAW		DRM_IOWR(0x28, struct drm_draw)
+#define DRM_IOCTL_DMA			DRM_IOWR(0x29, struct drm_dma)
+#define DRM_IOCTL_LOCK			DRM_IOW( 0x2a, struct drm_lock)
+#define DRM_IOCTL_UNLOCK		DRM_IOW( 0x2b, struct drm_lock)
+#define DRM_IOCTL_FINISH		DRM_IOW( 0x2c, struct drm_lock)
+
+#define DRM_IOCTL_PRIME_HANDLE_TO_FD    DRM_IOWR(0x2d, struct drm_prime_handle)
+#define DRM_IOCTL_PRIME_FD_TO_HANDLE    DRM_IOWR(0x2e, struct drm_prime_handle)
+
+#define DRM_IOCTL_AGP_ACQUIRE		DRM_IO(  0x30)
+#define DRM_IOCTL_AGP_RELEASE		DRM_IO(  0x31)
+#define DRM_IOCTL_AGP_ENABLE		DRM_IOW( 0x32, struct drm_agp_mode)
+#define DRM_IOCTL_AGP_INFO		DRM_IOR( 0x33, struct drm_agp_info)
+#define DRM_IOCTL_AGP_ALLOC		DRM_IOWR(0x34, struct drm_agp_buffer)
+#define DRM_IOCTL_AGP_FREE		DRM_IOW( 0x35, struct drm_agp_buffer)
+#define DRM_IOCTL_AGP_BIND		DRM_IOW( 0x36, struct drm_agp_binding)
+#define DRM_IOCTL_AGP_UNBIND		DRM_IOW( 0x37, struct drm_agp_binding)
+
+#define DRM_IOCTL_SG_ALLOC		DRM_IOWR(0x38, struct drm_scatter_gather)
+#define DRM_IOCTL_SG_FREE		DRM_IOW( 0x39, struct drm_scatter_gather)
+
+#define DRM_IOCTL_WAIT_VBLANK		DRM_IOWR(0x3a, union drm_wait_vblank)
+
+#define DRM_IOCTL_CRTC_GET_SEQUENCE	DRM_IOWR(0x3b, struct drm_crtc_get_sequence)
+#define DRM_IOCTL_CRTC_QUEUE_SEQUENCE	DRM_IOWR(0x3c, struct drm_crtc_queue_sequence)
+
+#define DRM_IOCTL_UPDATE_DRAW		DRM_IOW(0x3f, struct drm_update_draw)
+
+#define DRM_IOCTL_MODE_GETRESOURCES	DRM_IOWR(0xA0, struct drm_mode_card_res)
+#define DRM_IOCTL_MODE_GETCRTC		DRM_IOWR(0xA1, struct drm_mode_crtc)
+#define DRM_IOCTL_MODE_SETCRTC		DRM_IOWR(0xA2, struct drm_mode_crtc)
+#define DRM_IOCTL_MODE_CURSOR		DRM_IOWR(0xA3, struct drm_mode_cursor)
+#define DRM_IOCTL_MODE_GETGAMMA		DRM_IOWR(0xA4, struct drm_mode_crtc_lut)
+#define DRM_IOCTL_MODE_SETGAMMA		DRM_IOWR(0xA5, struct drm_mode_crtc_lut)
+#define DRM_IOCTL_MODE_GETENCODER	DRM_IOWR(0xA6, struct drm_mode_get_encoder)
+#define DRM_IOCTL_MODE_GETCONNECTOR	DRM_IOWR(0xA7, struct drm_mode_get_connector)
+#define DRM_IOCTL_MODE_ATTACHMODE	DRM_IOWR(0xA8, struct drm_mode_mode_cmd) /* deprecated (never worked) */
+#define DRM_IOCTL_MODE_DETACHMODE	DRM_IOWR(0xA9, struct drm_mode_mode_cmd) /* deprecated (never worked) */
+
+#define DRM_IOCTL_MODE_GETPROPERTY	DRM_IOWR(0xAA, struct drm_mode_get_property)
+#define DRM_IOCTL_MODE_SETPROPERTY	DRM_IOWR(0xAB, struct drm_mode_connector_set_property)
+#define DRM_IOCTL_MODE_GETPROPBLOB	DRM_IOWR(0xAC, struct drm_mode_get_blob)
+#define DRM_IOCTL_MODE_GETFB		DRM_IOWR(0xAD, struct drm_mode_fb_cmd)
+#define DRM_IOCTL_MODE_ADDFB		DRM_IOWR(0xAE, struct drm_mode_fb_cmd)
+/**
+ * DRM_IOCTL_MODE_RMFB - Remove a framebuffer.
+ *
+ * This removes a framebuffer previously added via ADDFB/ADDFB2. The IOCTL
+ * argument is a framebuffer object ID.
+ *
+ * Warning: removing a framebuffer currently in-use on an enabled plane will
+ * disable that plane. The CRTC the plane is linked to may also be disabled
+ * (depending on driver capabilities).
+ */
+#define DRM_IOCTL_MODE_RMFB		DRM_IOWR(0xAF, unsigned int)
+#define DRM_IOCTL_MODE_PAGE_FLIP	DRM_IOWR(0xB0, struct drm_mode_crtc_page_flip)
+#define DRM_IOCTL_MODE_DIRTYFB		DRM_IOWR(0xB1, struct drm_mode_fb_dirty_cmd)
+
+#define DRM_IOCTL_MODE_CREATE_DUMB DRM_IOWR(0xB2, struct drm_mode_create_dumb)
+#define DRM_IOCTL_MODE_MAP_DUMB    DRM_IOWR(0xB3, struct drm_mode_map_dumb)
+#define DRM_IOCTL_MODE_DESTROY_DUMB    DRM_IOWR(0xB4, struct drm_mode_destroy_dumb)
+#define DRM_IOCTL_MODE_GETPLANERESOURCES DRM_IOWR(0xB5, struct drm_mode_get_plane_res)
+#define DRM_IOCTL_MODE_GETPLANE	DRM_IOWR(0xB6, struct drm_mode_get_plane)
+#define DRM_IOCTL_MODE_SETPLANE	DRM_IOWR(0xB7, struct drm_mode_set_plane)
+#define DRM_IOCTL_MODE_ADDFB2		DRM_IOWR(0xB8, struct drm_mode_fb_cmd2)
+#define DRM_IOCTL_MODE_OBJ_GETPROPERTIES	DRM_IOWR(0xB9, struct drm_mode_obj_get_properties)
+#define DRM_IOCTL_MODE_OBJ_SETPROPERTY	DRM_IOWR(0xBA, struct drm_mode_obj_set_property)
+#define DRM_IOCTL_MODE_CURSOR2		DRM_IOWR(0xBB, struct drm_mode_cursor2)
+#define DRM_IOCTL_MODE_ATOMIC		DRM_IOWR(0xBC, struct drm_mode_atomic)
+#define DRM_IOCTL_MODE_CREATEPROPBLOB	DRM_IOWR(0xBD, struct drm_mode_create_blob)
+#define DRM_IOCTL_MODE_DESTROYPROPBLOB	DRM_IOWR(0xBE, struct drm_mode_destroy_blob)
+
+#define DRM_IOCTL_SYNCOBJ_CREATE	DRM_IOWR(0xBF, struct drm_syncobj_create)
+#define DRM_IOCTL_SYNCOBJ_DESTROY	DRM_IOWR(0xC0, struct drm_syncobj_destroy)
+#define DRM_IOCTL_SYNCOBJ_HANDLE_TO_FD	DRM_IOWR(0xC1, struct drm_syncobj_handle)
+#define DRM_IOCTL_SYNCOBJ_FD_TO_HANDLE	DRM_IOWR(0xC2, struct drm_syncobj_handle)
+#define DRM_IOCTL_SYNCOBJ_WAIT		DRM_IOWR(0xC3, struct drm_syncobj_wait)
+#define DRM_IOCTL_SYNCOBJ_RESET		DRM_IOWR(0xC4, struct drm_syncobj_array)
+#define DRM_IOCTL_SYNCOBJ_SIGNAL	DRM_IOWR(0xC5, struct drm_syncobj_array)
+
+#define DRM_IOCTL_MODE_CREATE_LEASE	DRM_IOWR(0xC6, struct drm_mode_create_lease)
+#define DRM_IOCTL_MODE_LIST_LESSEES	DRM_IOWR(0xC7, struct drm_mode_list_lessees)
+#define DRM_IOCTL_MODE_GET_LEASE	DRM_IOWR(0xC8, struct drm_mode_get_lease)
+#define DRM_IOCTL_MODE_REVOKE_LEASE	DRM_IOWR(0xC9, struct drm_mode_revoke_lease)
+
+#define DRM_IOCTL_SYNCOBJ_TIMELINE_WAIT	DRM_IOWR(0xCA, struct drm_syncobj_timeline_wait)
+#define DRM_IOCTL_SYNCOBJ_QUERY		DRM_IOWR(0xCB, struct drm_syncobj_timeline_array)
+#define DRM_IOCTL_SYNCOBJ_TRANSFER	DRM_IOWR(0xCC, struct drm_syncobj_transfer)
+#define DRM_IOCTL_SYNCOBJ_TIMELINE_SIGNAL	DRM_IOWR(0xCD, struct drm_syncobj_timeline_array)
+
+#define DRM_IOCTL_MODE_GETFB2		DRM_IOWR(0xCE, struct drm_mode_fb_cmd2)
+
+/*
+ * Device specific ioctls should only be in their respective headers
+ * The device specific ioctl range is from 0x40 to 0x9f.
+ * Generic IOCTLS restart at 0xA0.
+ *
+ * \sa drmCommandNone(), drmCommandRead(), drmCommandWrite(), and
+ * drmCommandReadWrite().
+ */
+#define DRM_COMMAND_BASE                0x40
+#define DRM_COMMAND_END			0xA0
+
+/*
+ * Header for events written back to userspace on the drm fd.  The
+ * type defines the type of event, the length specifies the total
+ * length of the event (including the header), and user_data is
+ * typically a 64 bit value passed with the ioctl that triggered the
+ * event.  A read on the drm fd will always only return complete
+ * events, that is, if for example the read buffer is 100 bytes, and
+ * there are two 64 byte events pending, only one will be returned.
+ *
+ * Event types 0 - 0x7fffffff are generic drm events, 0x80000000 and
+ * up are chipset specific.
+ */
+struct drm_event {
+	__u32 type;
+	__u32 length;
+};
+
+#define DRM_EVENT_VBLANK 0x01
+#define DRM_EVENT_FLIP_COMPLETE 0x02
+#define DRM_EVENT_CRTC_SEQUENCE	0x03
+
+struct drm_event_vblank {
+	struct drm_event base;
+	__u64 user_data;
+	__u32 tv_sec;
+	__u32 tv_usec;
+	__u32 sequence;
+	__u32 crtc_id; /* 0 on older kernels that do not support this */
+};
+
+/* Event delivered at sequence. Time stamp marks when the first pixel
+ * of the refresh cycle leaves the display engine for the display
+ */
+struct drm_event_crtc_sequence {
+	struct drm_event	base;
+	__u64			user_data;
+	__s64			time_ns;
+	__u64			sequence;
+};
+
+/* typedef area */
+typedef struct drm_clip_rect drm_clip_rect_t;
+typedef struct drm_drawable_info drm_drawable_info_t;
+typedef struct drm_tex_region drm_tex_region_t;
+typedef struct drm_hw_lock drm_hw_lock_t;
+typedef struct drm_version drm_version_t;
+typedef struct drm_unique drm_unique_t;
+typedef struct drm_list drm_list_t;
+typedef struct drm_block drm_block_t;
+typedef struct drm_control drm_control_t;
+typedef enum drm_map_type drm_map_type_t;
+typedef enum drm_map_flags drm_map_flags_t;
+typedef struct drm_ctx_priv_map drm_ctx_priv_map_t;
+typedef struct drm_map drm_map_t;
+typedef struct drm_client drm_client_t;
+typedef enum drm_stat_type drm_stat_type_t;
+typedef struct drm_stats drm_stats_t;
+typedef enum drm_lock_flags drm_lock_flags_t;
+typedef struct drm_lock drm_lock_t;
+typedef enum drm_dma_flags drm_dma_flags_t;
+typedef struct drm_buf_desc drm_buf_desc_t;
+typedef struct drm_buf_info drm_buf_info_t;
+typedef struct drm_buf_free drm_buf_free_t;
+typedef struct drm_buf_pub drm_buf_pub_t;
+typedef struct drm_buf_map drm_buf_map_t;
+typedef struct drm_dma drm_dma_t;
+typedef union drm_wait_vblank drm_wait_vblank_t;
+typedef struct drm_agp_mode drm_agp_mode_t;
+typedef enum drm_ctx_flags drm_ctx_flags_t;
+typedef struct drm_ctx drm_ctx_t;
+typedef struct drm_ctx_res drm_ctx_res_t;
+typedef struct drm_draw drm_draw_t;
+typedef struct drm_update_draw drm_update_draw_t;
+typedef struct drm_auth drm_auth_t;
+typedef struct drm_irq_busid drm_irq_busid_t;
+typedef enum drm_vblank_seq_type drm_vblank_seq_type_t;
+
+typedef struct drm_agp_buffer drm_agp_buffer_t;
+typedef struct drm_agp_binding drm_agp_binding_t;
+typedef struct drm_agp_info drm_agp_info_t;
+typedef struct drm_scatter_gather drm_scatter_gather_t;
+typedef struct drm_set_version drm_set_version_t;
+
+#if defined(__cplusplus)
+}
+#endif
+
+#endif
diff --git a/third_party/drm/drm/drm_fourcc.h b/third_party/drm/drm/drm_fourcc.h
new file mode 100644
index 0000000..4ececa8
--- /dev/null
+++ b/third_party/drm/drm/drm_fourcc.h
@@ -0,0 +1,1377 @@
+/*
+ * Copyright 2011 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef DRM_FOURCC_H
+#define DRM_FOURCC_H
+
+#include "drm.h"
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+/**
+ * DOC: overview
+ *
+ * In the DRM subsystem, framebuffer pixel formats are described using the
+ * fourcc codes defined in `include/uapi/drm/drm_fourcc.h`. In addition to the
+ * fourcc code, a Format Modifier may optionally be provided, in order to
+ * further describe the buffer's format - for example tiling or compression.
+ *
+ * Format Modifiers
+ * ----------------
+ *
+ * Format modifiers are used in conjunction with a fourcc code, forming a
+ * unique fourcc:modifier pair. This format:modifier pair must fully define the
+ * format and data layout of the buffer, and should be the only way to describe
+ * that particular buffer.
+ *
+ * Having multiple fourcc:modifier pairs which describe the same layout should
+ * be avoided, as such aliases run the risk of different drivers exposing
+ * different names for the same data format, forcing userspace to understand
+ * that they are aliases.
+ *
+ * Format modifiers may change any property of the buffer, including the number
+ * of planes and/or the required allocation size. Format modifiers are
+ * vendor-namespaced, and as such the relationship between a fourcc code and a
+ * modifier is specific to the modifer being used. For example, some modifiers
+ * may preserve meaning - such as number of planes - from the fourcc code,
+ * whereas others may not.
+ *
+ * Modifiers must uniquely encode buffer layout. In other words, a buffer must
+ * match only a single modifier. A modifier must not be a subset of layouts of
+ * another modifier. For instance, it's incorrect to encode pitch alignment in
+ * a modifier: a buffer may match a 64-pixel aligned modifier and a 32-pixel
+ * aligned modifier. That said, modifiers can have implicit minimal
+ * requirements.
+ *
+ * For modifiers where the combination of fourcc code and modifier can alias,
+ * a canonical pair needs to be defined and used by all drivers. Preferred
+ * combinations are also encouraged where all combinations might lead to
+ * confusion and unnecessarily reduced interoperability. An example for the
+ * latter is AFBC, where the ABGR layouts are preferred over ARGB layouts.
+ *
+ * There are two kinds of modifier users:
+ *
+ * - Kernel and user-space drivers: for drivers it's important that modifiers
+ *   don't alias, otherwise two drivers might support the same format but use
+ *   different aliases, preventing them from sharing buffers in an efficient
+ *   format.
+ * - Higher-level programs interfacing with KMS/GBM/EGL/Vulkan/etc: these users
+ *   see modifiers as opaque tokens they can check for equality and intersect.
+ *   These users musn't need to know to reason about the modifier value
+ *   (i.e. they are not expected to extract information out of the modifier).
+ *
+ * Vendors should document their modifier usage in as much detail as
+ * possible, to ensure maximum compatibility across devices, drivers and
+ * applications.
+ *
+ * The authoritative list of format modifier codes is found in
+ * `include/uapi/drm/drm_fourcc.h`
+ */
+
+#define fourcc_code(a, b, c, d) ((__u32)(a) | ((__u32)(b) << 8) | \
+				 ((__u32)(c) << 16) | ((__u32)(d) << 24))
+
+#define DRM_FORMAT_BIG_ENDIAN (1U<<31) /* format is big endian instead of little endian */
+
+/* Reserve 0 for the invalid format specifier */
+#define DRM_FORMAT_INVALID	0
+
+/* color index */
+#define DRM_FORMAT_C8		fourcc_code('C', '8', ' ', ' ') /* [7:0] C */
+
+/* 8 bpp Red */
+#define DRM_FORMAT_R8		fourcc_code('R', '8', ' ', ' ') /* [7:0] R */
+
+/* 10 bpp Red */
+#define DRM_FORMAT_R10		fourcc_code('R', '1', '0', ' ') /* [15:0] x:R 6:10 little endian */
+
+/* 12 bpp Red */
+#define DRM_FORMAT_R12		fourcc_code('R', '1', '2', ' ') /* [15:0] x:R 4:12 little endian */
+
+/* 16 bpp Red */
+#define DRM_FORMAT_R16		fourcc_code('R', '1', '6', ' ') /* [15:0] R little endian */
+
+/* 16 bpp RG */
+#define DRM_FORMAT_RG88		fourcc_code('R', 'G', '8', '8') /* [15:0] R:G 8:8 little endian */
+#define DRM_FORMAT_GR88		fourcc_code('G', 'R', '8', '8') /* [15:0] G:R 8:8 little endian */
+
+/* 32 bpp RG */
+#define DRM_FORMAT_RG1616	fourcc_code('R', 'G', '3', '2') /* [31:0] R:G 16:16 little endian */
+#define DRM_FORMAT_GR1616	fourcc_code('G', 'R', '3', '2') /* [31:0] G:R 16:16 little endian */
+
+/* 8 bpp RGB */
+#define DRM_FORMAT_RGB332	fourcc_code('R', 'G', 'B', '8') /* [7:0] R:G:B 3:3:2 */
+#define DRM_FORMAT_BGR233	fourcc_code('B', 'G', 'R', '8') /* [7:0] B:G:R 2:3:3 */
+
+/* 16 bpp RGB */
+#define DRM_FORMAT_XRGB4444	fourcc_code('X', 'R', '1', '2') /* [15:0] x:R:G:B 4:4:4:4 little endian */
+#define DRM_FORMAT_XBGR4444	fourcc_code('X', 'B', '1', '2') /* [15:0] x:B:G:R 4:4:4:4 little endian */
+#define DRM_FORMAT_RGBX4444	fourcc_code('R', 'X', '1', '2') /* [15:0] R:G:B:x 4:4:4:4 little endian */
+#define DRM_FORMAT_BGRX4444	fourcc_code('B', 'X', '1', '2') /* [15:0] B:G:R:x 4:4:4:4 little endian */
+
+#define DRM_FORMAT_ARGB4444	fourcc_code('A', 'R', '1', '2') /* [15:0] A:R:G:B 4:4:4:4 little endian */
+#define DRM_FORMAT_ABGR4444	fourcc_code('A', 'B', '1', '2') /* [15:0] A:B:G:R 4:4:4:4 little endian */
+#define DRM_FORMAT_RGBA4444	fourcc_code('R', 'A', '1', '2') /* [15:0] R:G:B:A 4:4:4:4 little endian */
+#define DRM_FORMAT_BGRA4444	fourcc_code('B', 'A', '1', '2') /* [15:0] B:G:R:A 4:4:4:4 little endian */
+
+#define DRM_FORMAT_XRGB1555	fourcc_code('X', 'R', '1', '5') /* [15:0] x:R:G:B 1:5:5:5 little endian */
+#define DRM_FORMAT_XBGR1555	fourcc_code('X', 'B', '1', '5') /* [15:0] x:B:G:R 1:5:5:5 little endian */
+#define DRM_FORMAT_RGBX5551	fourcc_code('R', 'X', '1', '5') /* [15:0] R:G:B:x 5:5:5:1 little endian */
+#define DRM_FORMAT_BGRX5551	fourcc_code('B', 'X', '1', '5') /* [15:0] B:G:R:x 5:5:5:1 little endian */
+
+#define DRM_FORMAT_ARGB1555	fourcc_code('A', 'R', '1', '5') /* [15:0] A:R:G:B 1:5:5:5 little endian */
+#define DRM_FORMAT_ABGR1555	fourcc_code('A', 'B', '1', '5') /* [15:0] A:B:G:R 1:5:5:5 little endian */
+#define DRM_FORMAT_RGBA5551	fourcc_code('R', 'A', '1', '5') /* [15:0] R:G:B:A 5:5:5:1 little endian */
+#define DRM_FORMAT_BGRA5551	fourcc_code('B', 'A', '1', '5') /* [15:0] B:G:R:A 5:5:5:1 little endian */
+
+#define DRM_FORMAT_RGB565	fourcc_code('R', 'G', '1', '6') /* [15:0] R:G:B 5:6:5 little endian */
+#define DRM_FORMAT_BGR565	fourcc_code('B', 'G', '1', '6') /* [15:0] B:G:R 5:6:5 little endian */
+
+/* 24 bpp RGB */
+#define DRM_FORMAT_RGB888	fourcc_code('R', 'G', '2', '4') /* [23:0] R:G:B little endian */
+#define DRM_FORMAT_BGR888	fourcc_code('B', 'G', '2', '4') /* [23:0] B:G:R little endian */
+
+/* 32 bpp RGB */
+#define DRM_FORMAT_XRGB8888	fourcc_code('X', 'R', '2', '4') /* [31:0] x:R:G:B 8:8:8:8 little endian */
+#define DRM_FORMAT_XBGR8888	fourcc_code('X', 'B', '2', '4') /* [31:0] x:B:G:R 8:8:8:8 little endian */
+#define DRM_FORMAT_RGBX8888	fourcc_code('R', 'X', '2', '4') /* [31:0] R:G:B:x 8:8:8:8 little endian */
+#define DRM_FORMAT_BGRX8888	fourcc_code('B', 'X', '2', '4') /* [31:0] B:G:R:x 8:8:8:8 little endian */
+
+#define DRM_FORMAT_ARGB8888	fourcc_code('A', 'R', '2', '4') /* [31:0] A:R:G:B 8:8:8:8 little endian */
+#define DRM_FORMAT_ABGR8888	fourcc_code('A', 'B', '2', '4') /* [31:0] A:B:G:R 8:8:8:8 little endian */
+#define DRM_FORMAT_RGBA8888	fourcc_code('R', 'A', '2', '4') /* [31:0] R:G:B:A 8:8:8:8 little endian */
+#define DRM_FORMAT_BGRA8888	fourcc_code('B', 'A', '2', '4') /* [31:0] B:G:R:A 8:8:8:8 little endian */
+
+#define DRM_FORMAT_XRGB2101010	fourcc_code('X', 'R', '3', '0') /* [31:0] x:R:G:B 2:10:10:10 little endian */
+#define DRM_FORMAT_XBGR2101010	fourcc_code('X', 'B', '3', '0') /* [31:0] x:B:G:R 2:10:10:10 little endian */
+#define DRM_FORMAT_RGBX1010102	fourcc_code('R', 'X', '3', '0') /* [31:0] R:G:B:x 10:10:10:2 little endian */
+#define DRM_FORMAT_BGRX1010102	fourcc_code('B', 'X', '3', '0') /* [31:0] B:G:R:x 10:10:10:2 little endian */
+
+#define DRM_FORMAT_ARGB2101010	fourcc_code('A', 'R', '3', '0') /* [31:0] A:R:G:B 2:10:10:10 little endian */
+#define DRM_FORMAT_ABGR2101010	fourcc_code('A', 'B', '3', '0') /* [31:0] A:B:G:R 2:10:10:10 little endian */
+#define DRM_FORMAT_RGBA1010102	fourcc_code('R', 'A', '3', '0') /* [31:0] R:G:B:A 10:10:10:2 little endian */
+#define DRM_FORMAT_BGRA1010102	fourcc_code('B', 'A', '3', '0') /* [31:0] B:G:R:A 10:10:10:2 little endian */
+
+/* 64 bpp RGB */
+#define DRM_FORMAT_XRGB16161616	fourcc_code('X', 'R', '4', '8') /* [63:0] x:R:G:B 16:16:16:16 little endian */
+#define DRM_FORMAT_XBGR16161616	fourcc_code('X', 'B', '4', '8') /* [63:0] x:B:G:R 16:16:16:16 little endian */
+
+#define DRM_FORMAT_ARGB16161616	fourcc_code('A', 'R', '4', '8') /* [63:0] A:R:G:B 16:16:16:16 little endian */
+#define DRM_FORMAT_ABGR16161616	fourcc_code('A', 'B', '4', '8') /* [63:0] A:B:G:R 16:16:16:16 little endian */
+
+/*
+ * Floating point 64bpp RGB
+ * IEEE 754-2008 binary16 half-precision float
+ * [15:0] sign:exponent:mantissa 1:5:10
+ */
+#define DRM_FORMAT_XRGB16161616F fourcc_code('X', 'R', '4', 'H') /* [63:0] x:R:G:B 16:16:16:16 little endian */
+#define DRM_FORMAT_XBGR16161616F fourcc_code('X', 'B', '4', 'H') /* [63:0] x:B:G:R 16:16:16:16 little endian */
+
+#define DRM_FORMAT_ARGB16161616F fourcc_code('A', 'R', '4', 'H') /* [63:0] A:R:G:B 16:16:16:16 little endian */
+#define DRM_FORMAT_ABGR16161616F fourcc_code('A', 'B', '4', 'H') /* [63:0] A:B:G:R 16:16:16:16 little endian */
+
+/*
+ * RGBA format with 10-bit components packed in 64-bit per pixel, with 6 bits
+ * of unused padding per component:
+ */
+#define DRM_FORMAT_AXBXGXRX106106106106 fourcc_code('A', 'B', '1', '0') /* [63:0] A:x:B:x:G:x:R:x 10:6:10:6:10:6:10:6 little endian */
+
+/* packed YCbCr */
+#define DRM_FORMAT_YUYV		fourcc_code('Y', 'U', 'Y', 'V') /* [31:0] Cr0:Y1:Cb0:Y0 8:8:8:8 little endian */
+#define DRM_FORMAT_YVYU		fourcc_code('Y', 'V', 'Y', 'U') /* [31:0] Cb0:Y1:Cr0:Y0 8:8:8:8 little endian */
+#define DRM_FORMAT_UYVY		fourcc_code('U', 'Y', 'V', 'Y') /* [31:0] Y1:Cr0:Y0:Cb0 8:8:8:8 little endian */
+#define DRM_FORMAT_VYUY		fourcc_code('V', 'Y', 'U', 'Y') /* [31:0] Y1:Cb0:Y0:Cr0 8:8:8:8 little endian */
+
+#define DRM_FORMAT_AYUV		fourcc_code('A', 'Y', 'U', 'V') /* [31:0] A:Y:Cb:Cr 8:8:8:8 little endian */
+#define DRM_FORMAT_XYUV8888	fourcc_code('X', 'Y', 'U', 'V') /* [31:0] X:Y:Cb:Cr 8:8:8:8 little endian */
+#define DRM_FORMAT_VUY888	fourcc_code('V', 'U', '2', '4') /* [23:0] Cr:Cb:Y 8:8:8 little endian */
+#define DRM_FORMAT_VUY101010	fourcc_code('V', 'U', '3', '0') /* Y followed by U then V, 10:10:10. Non-linear modifier only */
+
+/*
+ * packed Y2xx indicate for each component, xx valid data occupy msb
+ * 16-xx padding occupy lsb
+ */
+#define DRM_FORMAT_Y210         fourcc_code('Y', '2', '1', '0') /* [63:0] Cr0:0:Y1:0:Cb0:0:Y0:0 10:6:10:6:10:6:10:6 little endian per 2 Y pixels */
+#define DRM_FORMAT_Y212         fourcc_code('Y', '2', '1', '2') /* [63:0] Cr0:0:Y1:0:Cb0:0:Y0:0 12:4:12:4:12:4:12:4 little endian per 2 Y pixels */
+#define DRM_FORMAT_Y216         fourcc_code('Y', '2', '1', '6') /* [63:0] Cr0:Y1:Cb0:Y0 16:16:16:16 little endian per 2 Y pixels */
+
+/*
+ * packed Y4xx indicate for each component, xx valid data occupy msb
+ * 16-xx padding occupy lsb except Y410
+ */
+#define DRM_FORMAT_Y410         fourcc_code('Y', '4', '1', '0') /* [31:0] A:Cr:Y:Cb 2:10:10:10 little endian */
+#define DRM_FORMAT_Y412         fourcc_code('Y', '4', '1', '2') /* [63:0] A:0:Cr:0:Y:0:Cb:0 12:4:12:4:12:4:12:4 little endian */
+#define DRM_FORMAT_Y416         fourcc_code('Y', '4', '1', '6') /* [63:0] A:Cr:Y:Cb 16:16:16:16 little endian */
+
+#define DRM_FORMAT_XVYU2101010	fourcc_code('X', 'V', '3', '0') /* [31:0] X:Cr:Y:Cb 2:10:10:10 little endian */
+#define DRM_FORMAT_XVYU12_16161616	fourcc_code('X', 'V', '3', '6') /* [63:0] X:0:Cr:0:Y:0:Cb:0 12:4:12:4:12:4:12:4 little endian */
+#define DRM_FORMAT_XVYU16161616	fourcc_code('X', 'V', '4', '8') /* [63:0] X:Cr:Y:Cb 16:16:16:16 little endian */
+
+/*
+ * packed YCbCr420 2x2 tiled formats
+ * first 64 bits will contain Y,Cb,Cr components for a 2x2 tile
+ */
+/* [63:0]   A3:A2:Y3:0:Cr0:0:Y2:0:A1:A0:Y1:0:Cb0:0:Y0:0  1:1:8:2:8:2:8:2:1:1:8:2:8:2:8:2 little endian */
+#define DRM_FORMAT_Y0L0		fourcc_code('Y', '0', 'L', '0')
+/* [63:0]   X3:X2:Y3:0:Cr0:0:Y2:0:X1:X0:Y1:0:Cb0:0:Y0:0  1:1:8:2:8:2:8:2:1:1:8:2:8:2:8:2 little endian */
+#define DRM_FORMAT_X0L0		fourcc_code('X', '0', 'L', '0')
+
+/* [63:0]   A3:A2:Y3:Cr0:Y2:A1:A0:Y1:Cb0:Y0  1:1:10:10:10:1:1:10:10:10 little endian */
+#define DRM_FORMAT_Y0L2		fourcc_code('Y', '0', 'L', '2')
+/* [63:0]   X3:X2:Y3:Cr0:Y2:X1:X0:Y1:Cb0:Y0  1:1:10:10:10:1:1:10:10:10 little endian */
+#define DRM_FORMAT_X0L2		fourcc_code('X', '0', 'L', '2')
+
+/*
+ * 1-plane YUV 4:2:0
+ * In these formats, the component ordering is specified (Y, followed by U
+ * then V), but the exact Linear layout is undefined.
+ * These formats can only be used with a non-Linear modifier.
+ */
+#define DRM_FORMAT_YUV420_8BIT	fourcc_code('Y', 'U', '0', '8')
+#define DRM_FORMAT_YUV420_10BIT	fourcc_code('Y', 'U', '1', '0')
+
+/*
+ * 2 plane RGB + A
+ * index 0 = RGB plane, same format as the corresponding non _A8 format has
+ * index 1 = A plane, [7:0] A
+ */
+#define DRM_FORMAT_XRGB8888_A8	fourcc_code('X', 'R', 'A', '8')
+#define DRM_FORMAT_XBGR8888_A8	fourcc_code('X', 'B', 'A', '8')
+#define DRM_FORMAT_RGBX8888_A8	fourcc_code('R', 'X', 'A', '8')
+#define DRM_FORMAT_BGRX8888_A8	fourcc_code('B', 'X', 'A', '8')
+#define DRM_FORMAT_RGB888_A8	fourcc_code('R', '8', 'A', '8')
+#define DRM_FORMAT_BGR888_A8	fourcc_code('B', '8', 'A', '8')
+#define DRM_FORMAT_RGB565_A8	fourcc_code('R', '5', 'A', '8')
+#define DRM_FORMAT_BGR565_A8	fourcc_code('B', '5', 'A', '8')
+
+/*
+ * 2 plane YCbCr
+ * index 0 = Y plane, [7:0] Y
+ * index 1 = Cr:Cb plane, [15:0] Cr:Cb little endian
+ * or
+ * index 1 = Cb:Cr plane, [15:0] Cb:Cr little endian
+ */
+#define DRM_FORMAT_NV12		fourcc_code('N', 'V', '1', '2') /* 2x2 subsampled Cr:Cb plane */
+#define DRM_FORMAT_NV21		fourcc_code('N', 'V', '2', '1') /* 2x2 subsampled Cb:Cr plane */
+#define DRM_FORMAT_NV16		fourcc_code('N', 'V', '1', '6') /* 2x1 subsampled Cr:Cb plane */
+#define DRM_FORMAT_NV61		fourcc_code('N', 'V', '6', '1') /* 2x1 subsampled Cb:Cr plane */
+#define DRM_FORMAT_NV24		fourcc_code('N', 'V', '2', '4') /* non-subsampled Cr:Cb plane */
+#define DRM_FORMAT_NV42		fourcc_code('N', 'V', '4', '2') /* non-subsampled Cb:Cr plane */
+/*
+ * 2 plane YCbCr
+ * index 0 = Y plane, [39:0] Y3:Y2:Y1:Y0 little endian
+ * index 1 = Cr:Cb plane, [39:0] Cr1:Cb1:Cr0:Cb0 little endian
+ */
+#define DRM_FORMAT_NV15		fourcc_code('N', 'V', '1', '5') /* 2x2 subsampled Cr:Cb plane */
+
+/*
+ * 2 plane YCbCr MSB aligned
+ * index 0 = Y plane, [15:0] Y:x [10:6] little endian
+ * index 1 = Cr:Cb plane, [31:0] Cr:x:Cb:x [10:6:10:6] little endian
+ */
+#define DRM_FORMAT_P210		fourcc_code('P', '2', '1', '0') /* 2x1 subsampled Cr:Cb plane, 10 bit per channel */
+
+/*
+ * 2 plane YCbCr MSB aligned
+ * index 0 = Y plane, [15:0] Y:x [10:6] little endian
+ * index 1 = Cr:Cb plane, [31:0] Cr:x:Cb:x [10:6:10:6] little endian
+ */
+#define DRM_FORMAT_P010		fourcc_code('P', '0', '1', '0') /* 2x2 subsampled Cr:Cb plane 10 bits per channel */
+
+/*
+ * 2 plane YCbCr MSB aligned
+ * index 0 = Y plane, [15:0] Y:x [12:4] little endian
+ * index 1 = Cr:Cb plane, [31:0] Cr:x:Cb:x [12:4:12:4] little endian
+ */
+#define DRM_FORMAT_P012		fourcc_code('P', '0', '1', '2') /* 2x2 subsampled Cr:Cb plane 12 bits per channel */
+
+/*
+ * 2 plane YCbCr MSB aligned
+ * index 0 = Y plane, [15:0] Y little endian
+ * index 1 = Cr:Cb plane, [31:0] Cr:Cb [16:16] little endian
+ */
+#define DRM_FORMAT_P016		fourcc_code('P', '0', '1', '6') /* 2x2 subsampled Cr:Cb plane 16 bits per channel */
+
+/* 3 plane non-subsampled (444) YCbCr
+ * 16 bits per component, but only 10 bits are used and 6 bits are padded
+ * index 0: Y plane, [15:0] Y:x [10:6] little endian
+ * index 1: Cb plane, [15:0] Cb:x [10:6] little endian
+ * index 2: Cr plane, [15:0] Cr:x [10:6] little endian
+ */
+#define DRM_FORMAT_Q410		fourcc_code('Q', '4', '1', '0')
+
+/* 3 plane non-subsampled (444) YCrCb
+ * 16 bits per component, but only 10 bits are used and 6 bits are padded
+ * index 0: Y plane, [15:0] Y:x [10:6] little endian
+ * index 1: Cr plane, [15:0] Cr:x [10:6] little endian
+ * index 2: Cb plane, [15:0] Cb:x [10:6] little endian
+ */
+#define DRM_FORMAT_Q401		fourcc_code('Q', '4', '0', '1')
+
+/*
+ * 3 plane YCbCr
+ * index 0: Y plane, [7:0] Y
+ * index 1: Cb plane, [7:0] Cb
+ * index 2: Cr plane, [7:0] Cr
+ * or
+ * index 1: Cr plane, [7:0] Cr
+ * index 2: Cb plane, [7:0] Cb
+ */
+#define DRM_FORMAT_YUV410	fourcc_code('Y', 'U', 'V', '9') /* 4x4 subsampled Cb (1) and Cr (2) planes */
+#define DRM_FORMAT_YVU410	fourcc_code('Y', 'V', 'U', '9') /* 4x4 subsampled Cr (1) and Cb (2) planes */
+#define DRM_FORMAT_YUV411	fourcc_code('Y', 'U', '1', '1') /* 4x1 subsampled Cb (1) and Cr (2) planes */
+#define DRM_FORMAT_YVU411	fourcc_code('Y', 'V', '1', '1') /* 4x1 subsampled Cr (1) and Cb (2) planes */
+#define DRM_FORMAT_YUV420	fourcc_code('Y', 'U', '1', '2') /* 2x2 subsampled Cb (1) and Cr (2) planes */
+#define DRM_FORMAT_YVU420	fourcc_code('Y', 'V', '1', '2') /* 2x2 subsampled Cr (1) and Cb (2) planes */
+#define DRM_FORMAT_YUV422	fourcc_code('Y', 'U', '1', '6') /* 2x1 subsampled Cb (1) and Cr (2) planes */
+#define DRM_FORMAT_YVU422	fourcc_code('Y', 'V', '1', '6') /* 2x1 subsampled Cr (1) and Cb (2) planes */
+#define DRM_FORMAT_YUV444	fourcc_code('Y', 'U', '2', '4') /* non-subsampled Cb (1) and Cr (2) planes */
+#define DRM_FORMAT_YVU444	fourcc_code('Y', 'V', '2', '4') /* non-subsampled Cr (1) and Cb (2) planes */
+
+
+/*
+ * Format Modifiers:
+ *
+ * Format modifiers describe, typically, a re-ordering or modification
+ * of the data in a plane of an FB.  This can be used to express tiled/
+ * swizzled formats, or compression, or a combination of the two.
+ *
+ * The upper 8 bits of the format modifier are a vendor-id as assigned
+ * below.  The lower 56 bits are assigned as vendor sees fit.
+ */
+
+/* Vendor Ids: */
+#define DRM_FORMAT_MOD_VENDOR_NONE    0
+#define DRM_FORMAT_MOD_VENDOR_INTEL   0x01
+#define DRM_FORMAT_MOD_VENDOR_AMD     0x02
+#define DRM_FORMAT_MOD_VENDOR_NVIDIA  0x03
+#define DRM_FORMAT_MOD_VENDOR_SAMSUNG 0x04
+#define DRM_FORMAT_MOD_VENDOR_QCOM    0x05
+#define DRM_FORMAT_MOD_VENDOR_VIVANTE 0x06
+#define DRM_FORMAT_MOD_VENDOR_BROADCOM 0x07
+#define DRM_FORMAT_MOD_VENDOR_ARM     0x08
+#define DRM_FORMAT_MOD_VENDOR_ALLWINNER 0x09
+#define DRM_FORMAT_MOD_VENDOR_AMLOGIC 0x0a
+
+/* add more to the end as needed */
+
+#define DRM_FORMAT_RESERVED	      ((1ULL << 56) - 1)
+
+#define fourcc_mod_get_vendor(modifier) \
+	(((modifier) >> 56) & 0xff)
+
+#define fourcc_mod_is_vendor(modifier, vendor) \
+	(fourcc_mod_get_vendor(modifier) == DRM_FORMAT_MOD_VENDOR_## vendor)
+
+#define fourcc_mod_code(vendor, val) \
+	((((__u64)DRM_FORMAT_MOD_VENDOR_## vendor) << 56) | ((val) & 0x00ffffffffffffffULL))
+
+/*
+ * Format Modifier tokens:
+ *
+ * When adding a new token please document the layout with a code comment,
+ * similar to the fourcc codes above. drm_fourcc.h is considered the
+ * authoritative source for all of these.
+ *
+ * Generic modifier names:
+ *
+ * DRM_FORMAT_MOD_GENERIC_* definitions are used to provide vendor-neutral names
+ * for layouts which are common across multiple vendors. To preserve
+ * compatibility, in cases where a vendor-specific definition already exists and
+ * a generic name for it is desired, the common name is a purely symbolic alias
+ * and must use the same numerical value as the original definition.
+ *
+ * Note that generic names should only be used for modifiers which describe
+ * generic layouts (such as pixel re-ordering), which may have
+ * independently-developed support across multiple vendors.
+ *
+ * In future cases where a generic layout is identified before merging with a
+ * vendor-specific modifier, a new 'GENERIC' vendor or modifier using vendor
+ * 'NONE' could be considered. This should only be for obvious, exceptional
+ * cases to avoid polluting the 'GENERIC' namespace with modifiers which only
+ * apply to a single vendor.
+ *
+ * Generic names should not be used for cases where multiple hardware vendors
+ * have implementations of the same standardised compression scheme (such as
+ * AFBC). In those cases, all implementations should use the same format
+ * modifier(s), reflecting the vendor of the standard.
+ */
+
+#define DRM_FORMAT_MOD_GENERIC_16_16_TILE DRM_FORMAT_MOD_SAMSUNG_16_16_TILE
+
+/*
+ * Invalid Modifier
+ *
+ * This modifier can be used as a sentinel to terminate the format modifiers
+ * list, or to initialize a variable with an invalid modifier. It might also be
+ * used to report an error back to userspace for certain APIs.
+ */
+#define DRM_FORMAT_MOD_INVALID	fourcc_mod_code(NONE, DRM_FORMAT_RESERVED)
+
+/*
+ * Linear Layout
+ *
+ * Just plain linear layout. Note that this is different from no specifying any
+ * modifier (e.g. not setting DRM_MODE_FB_MODIFIERS in the DRM_ADDFB2 ioctl),
+ * which tells the driver to also take driver-internal information into account
+ * and so might actually result in a tiled framebuffer.
+ */
+#define DRM_FORMAT_MOD_LINEAR	fourcc_mod_code(NONE, 0)
+
+/*
+ * Deprecated: use DRM_FORMAT_MOD_LINEAR instead
+ *
+ * The "none" format modifier doesn't actually mean that the modifier is
+ * implicit, instead it means that the layout is linear. Whether modifiers are
+ * used is out-of-band information carried in an API-specific way (e.g. in a
+ * flag for drm_mode_fb_cmd2).
+ */
+#define DRM_FORMAT_MOD_NONE	0
+
+/* Intel framebuffer modifiers */
+
+/*
+ * Intel X-tiling layout
+ *
+ * This is a tiled layout using 4Kb tiles (except on gen2 where the tiles 2Kb)
+ * in row-major layout. Within the tile bytes are laid out row-major, with
+ * a platform-dependent stride. On top of that the memory can apply
+ * platform-depending swizzling of some higher address bits into bit6.
+ *
+ * Note that this layout is only accurate on intel gen 8+ or valleyview chipsets.
+ * On earlier platforms the is highly platforms specific and not useful for
+ * cross-driver sharing. It exists since on a given platform it does uniquely
+ * identify the layout in a simple way for i915-specific userspace, which
+ * facilitated conversion of userspace to modifiers. Additionally the exact
+ * format on some really old platforms is not known.
+ */
+#define I915_FORMAT_MOD_X_TILED	fourcc_mod_code(INTEL, 1)
+
+/*
+ * Intel Y-tiling layout
+ *
+ * This is a tiled layout using 4Kb tiles (except on gen2 where the tiles 2Kb)
+ * in row-major layout. Within the tile bytes are laid out in OWORD (16 bytes)
+ * chunks column-major, with a platform-dependent height. On top of that the
+ * memory can apply platform-depending swizzling of some higher address bits
+ * into bit6.
+ *
+ * Note that this layout is only accurate on intel gen 8+ or valleyview chipsets.
+ * On earlier platforms the is highly platforms specific and not useful for
+ * cross-driver sharing. It exists since on a given platform it does uniquely
+ * identify the layout in a simple way for i915-specific userspace, which
+ * facilitated conversion of userspace to modifiers. Additionally the exact
+ * format on some really old platforms is not known.
+ */
+#define I915_FORMAT_MOD_Y_TILED	fourcc_mod_code(INTEL, 2)
+
+/*
+ * Intel Yf-tiling layout
+ *
+ * This is a tiled layout using 4Kb tiles in row-major layout.
+ * Within the tile pixels are laid out in 16 256 byte units / sub-tiles which
+ * are arranged in four groups (two wide, two high) with column-major layout.
+ * Each group therefore consits out of four 256 byte units, which are also laid
+ * out as 2x2 column-major.
+ * 256 byte units are made out of four 64 byte blocks of pixels, producing
+ * either a square block or a 2:1 unit.
+ * 64 byte blocks of pixels contain four pixel rows of 16 bytes, where the width
+ * in pixel depends on the pixel depth.
+ */
+#define I915_FORMAT_MOD_Yf_TILED fourcc_mod_code(INTEL, 3)
+
+/*
+ * Intel color control surface (CCS) for render compression
+ *
+ * The framebuffer format must be one of the 8:8:8:8 RGB formats.
+ * The main surface will be plane index 0 and must be Y/Yf-tiled,
+ * the CCS will be plane index 1.
+ *
+ * Each CCS tile matches a 1024x512 pixel area of the main surface.
+ * To match certain aspects of the 3D hardware the CCS is
+ * considered to be made up of normal 128Bx32 Y tiles, Thus
+ * the CCS pitch must be specified in multiples of 128 bytes.
+ *
+ * In reality the CCS tile appears to be a 64Bx64 Y tile, composed
+ * of QWORD (8 bytes) chunks instead of OWORD (16 bytes) chunks.
+ * But that fact is not relevant unless the memory is accessed
+ * directly.
+ */
+#define I915_FORMAT_MOD_Y_TILED_CCS	fourcc_mod_code(INTEL, 4)
+#define I915_FORMAT_MOD_Yf_TILED_CCS	fourcc_mod_code(INTEL, 5)
+
+/*
+ * Intel color control surfaces (CCS) for Gen-12 render compression.
+ *
+ * The main surface is Y-tiled and at plane index 0, the CCS is linear and
+ * at index 1. A 64B CCS cache line corresponds to an area of 4x1 tiles in
+ * main surface. In other words, 4 bits in CCS map to a main surface cache
+ * line pair. The main surface pitch is required to be a multiple of four
+ * Y-tile widths.
+ */
+#define I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS fourcc_mod_code(INTEL, 6)
+
+/*
+ * Intel color control surfaces (CCS) for Gen-12 media compression
+ *
+ * The main surface is Y-tiled and at plane index 0, the CCS is linear and
+ * at index 1. A 64B CCS cache line corresponds to an area of 4x1 tiles in
+ * main surface. In other words, 4 bits in CCS map to a main surface cache
+ * line pair. The main surface pitch is required to be a multiple of four
+ * Y-tile widths. For semi-planar formats like NV12, CCS planes follow the
+ * Y and UV planes i.e., planes 0 and 1 are used for Y and UV surfaces,
+ * planes 2 and 3 for the respective CCS.
+ */
+#define I915_FORMAT_MOD_Y_TILED_GEN12_MC_CCS fourcc_mod_code(INTEL, 7)
+
+/*
+ * Intel Color Control Surface with Clear Color (CCS) for Gen-12 render
+ * compression.
+ *
+ * The main surface is Y-tiled and is at plane index 0 whereas CCS is linear
+ * and at index 1. The clear color is stored at index 2, and the pitch should
+ * be ignored. The clear color structure is 256 bits. The first 128 bits
+ * represents Raw Clear Color Red, Green, Blue and Alpha color each represented
+ * by 32 bits. The raw clear color is consumed by the 3d engine and generates
+ * the converted clear color of size 64 bits. The first 32 bits store the Lower
+ * Converted Clear Color value and the next 32 bits store the Higher Converted
+ * Clear Color value when applicable. The Converted Clear Color values are
+ * consumed by the DE. The last 64 bits are used to store Color Discard Enable
+ * and Depth Clear Value Valid which are ignored by the DE. A CCS cache line
+ * corresponds to an area of 4x1 tiles in the main surface. The main surface
+ * pitch is required to be a multiple of 4 tile widths.
+ */
+#define I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS_CC fourcc_mod_code(INTEL, 8)
+
+/*
+ * Tiled, NV12MT, grouped in 64 (pixels) x 32 (lines) -sized macroblocks
+ *
+ * Macroblocks are laid in a Z-shape, and each pixel data is following the
+ * standard NV12 style.
+ * As for NV12, an image is the result of two frame buffers: one for Y,
+ * one for the interleaved Cb/Cr components (1/2 the height of the Y buffer).
+ * Alignment requirements are (for each buffer):
+ * - multiple of 128 pixels for the width
+ * - multiple of  32 pixels for the height
+ *
+ * For more information: see https://linuxtv.org/downloads/v4l-dvb-apis/re32.html
+ */
+#define DRM_FORMAT_MOD_SAMSUNG_64_32_TILE	fourcc_mod_code(SAMSUNG, 1)
+
+/*
+ * Tiled, 16 (pixels) x 16 (lines) - sized macroblocks
+ *
+ * This is a simple tiled layout using tiles of 16x16 pixels in a row-major
+ * layout. For YCbCr formats Cb/Cr components are taken in such a way that
+ * they correspond to their 16x16 luma block.
+ */
+#define DRM_FORMAT_MOD_SAMSUNG_16_16_TILE	fourcc_mod_code(SAMSUNG, 2)
+
+/*
+ * Qualcomm Compressed Format
+ *
+ * Refers to a compressed variant of the base format that is compressed.
+ * Implementation may be platform and base-format specific.
+ *
+ * Each macrotile consists of m x n (mostly 4 x 4) tiles.
+ * Pixel data pitch/stride is aligned with macrotile width.
+ * Pixel data height is aligned with macrotile height.
+ * Entire pixel data buffer is aligned with 4k(bytes).
+ */
+#define DRM_FORMAT_MOD_QCOM_COMPRESSED	fourcc_mod_code(QCOM, 1)
+
+/* Vivante framebuffer modifiers */
+
+/*
+ * Vivante 4x4 tiling layout
+ *
+ * This is a simple tiled layout using tiles of 4x4 pixels in a row-major
+ * layout.
+ */
+#define DRM_FORMAT_MOD_VIVANTE_TILED		fourcc_mod_code(VIVANTE, 1)
+
+/*
+ * Vivante 64x64 super-tiling layout
+ *
+ * This is a tiled layout using 64x64 pixel super-tiles, where each super-tile
+ * contains 8x4 groups of 2x4 tiles of 4x4 pixels (like above) each, all in row-
+ * major layout.
+ *
+ * For more information: see
+ * https://github.com/etnaviv/etna_viv/blob/master/doc/hardware.md#texture-tiling
+ */
+#define DRM_FORMAT_MOD_VIVANTE_SUPER_TILED	fourcc_mod_code(VIVANTE, 2)
+
+/*
+ * Vivante 4x4 tiling layout for dual-pipe
+ *
+ * Same as the 4x4 tiling layout, except every second 4x4 pixel tile starts at a
+ * different base address. Offsets from the base addresses are therefore halved
+ * compared to the non-split tiled layout.
+ */
+#define DRM_FORMAT_MOD_VIVANTE_SPLIT_TILED	fourcc_mod_code(VIVANTE, 3)
+
+/*
+ * Vivante 64x64 super-tiling layout for dual-pipe
+ *
+ * Same as the 64x64 super-tiling layout, except every second 4x4 pixel tile
+ * starts at a different base address. Offsets from the base addresses are
+ * therefore halved compared to the non-split super-tiled layout.
+ */
+#define DRM_FORMAT_MOD_VIVANTE_SPLIT_SUPER_TILED fourcc_mod_code(VIVANTE, 4)
+
+/* NVIDIA frame buffer modifiers */
+
+/*
+ * Tegra Tiled Layout, used by Tegra 2, 3 and 4.
+ *
+ * Pixels are arranged in simple tiles of 16 x 16 bytes.
+ */
+#define DRM_FORMAT_MOD_NVIDIA_TEGRA_TILED fourcc_mod_code(NVIDIA, 1)
+
+/*
+ * Generalized Block Linear layout, used by desktop GPUs starting with NV50/G80,
+ * and Tegra GPUs starting with Tegra K1.
+ *
+ * Pixels are arranged in Groups of Bytes (GOBs).  GOB size and layout varies
+ * based on the architecture generation.  GOBs themselves are then arranged in
+ * 3D blocks, with the block dimensions (in terms of GOBs) always being a power
+ * of two, and hence expressible as their log2 equivalent (E.g., "2" represents
+ * a block depth or height of "4").
+ *
+ * Chapter 20 "Pixel Memory Formats" of the Tegra X1 TRM describes this format
+ * in full detail.
+ *
+ *       Macro
+ * Bits  Param Description
+ * ----  ----- -----------------------------------------------------------------
+ *
+ *  3:0  h     log2(height) of each block, in GOBs.  Placed here for
+ *             compatibility with the existing
+ *             DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK()-based modifiers.
+ *
+ *  4:4  -     Must be 1, to indicate block-linear layout.  Necessary for
+ *             compatibility with the existing
+ *             DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK()-based modifiers.
+ *
+ *  8:5  -     Reserved (To support 3D-surfaces with variable log2(depth) block
+ *             size).  Must be zero.
+ *
+ *             Note there is no log2(width) parameter.  Some portions of the
+ *             hardware support a block width of two gobs, but it is impractical
+ *             to use due to lack of support elsewhere, and has no known
+ *             benefits.
+ *
+ * 11:9  -     Reserved (To support 2D-array textures with variable array stride
+ *             in blocks, specified via log2(tile width in blocks)).  Must be
+ *             zero.
+ *
+ * 19:12 k     Page Kind.  This value directly maps to a field in the page
+ *             tables of all GPUs >= NV50.  It affects the exact layout of bits
+ *             in memory and can be derived from the tuple
+ *
+ *               (format, GPU model, compression type, samples per pixel)
+ *
+ *             Where compression type is defined below.  If GPU model were
+ *             implied by the format modifier, format, or memory buffer, page
+ *             kind would not need to be included in the modifier itself, but
+ *             since the modifier should define the layout of the associated
+ *             memory buffer independent from any device or other context, it
+ *             must be included here.
+ *
+ * 21:20 g     GOB Height and Page Kind Generation.  The height of a GOB changed
+ *             starting with Fermi GPUs.  Additionally, the mapping between page
+ *             kind and bit layout has changed at various points.
+ *
+ *               0 = Gob Height 8, Fermi - Volta, Tegra K1+ Page Kind mapping
+ *               1 = Gob Height 4, G80 - GT2XX Page Kind mapping
+ *               2 = Gob Height 8, Turing+ Page Kind mapping
+ *               3 = Reserved for future use.
+ *
+ * 22:22 s     Sector layout.  On Tegra GPUs prior to Xavier, there is a further
+ *             bit remapping step that occurs at an even lower level than the
+ *             page kind and block linear swizzles.  This causes the layout of
+ *             surfaces mapped in those SOC's GPUs to be incompatible with the
+ *             equivalent mapping on other GPUs in the same system.
+ *
+ *               0 = Tegra K1 - Tegra Parker/TX2 Layout.
+ *               1 = Desktop GPU and Tegra Xavier+ Layout
+ *
+ * 25:23 c     Lossless Framebuffer Compression type.
+ *
+ *               0 = none
+ *               1 = ROP/3D, layout 1, exact compression format implied by Page
+ *                   Kind field
+ *               2 = ROP/3D, layout 2, exact compression format implied by Page
+ *                   Kind field
+ *               3 = CDE horizontal
+ *               4 = CDE vertical
+ *               5 = Reserved for future use
+ *               6 = Reserved for future use
+ *               7 = Reserved for future use
+ *
+ * 55:25 -     Reserved for future use.  Must be zero.
+ */
+#define DRM_FORMAT_MOD_NVIDIA_BLOCK_LINEAR_2D(c, s, g, k, h) \
+	fourcc_mod_code(NVIDIA, (0x10 | \
+				 ((h) & 0xf) | \
+				 (((k) & 0xff) << 12) | \
+				 (((g) & 0x3) << 20) | \
+				 (((s) & 0x1) << 22) | \
+				 (((c) & 0x7) << 23)))
+
+/* To grandfather in prior block linear format modifiers to the above layout,
+ * the page kind "0", which corresponds to "pitch/linear" and hence is unusable
+ * with block-linear layouts, is remapped within drivers to the value 0xfe,
+ * which corresponds to the "generic" kind used for simple single-sample
+ * uncompressed color formats on Fermi - Volta GPUs.
+ */
+static __inline__ __u64
+drm_fourcc_canonicalize_nvidia_format_mod(__u64 modifier)
+{
+	if (!(modifier & 0x10) || (modifier & (0xff << 12)))
+		return modifier;
+	else
+		return modifier | (0xfe << 12);
+}
+
+/*
+ * 16Bx2 Block Linear layout, used by Tegra K1 and later
+ *
+ * Pixels are arranged in 64x8 Groups Of Bytes (GOBs). GOBs are then stacked
+ * vertically by a power of 2 (1 to 32 GOBs) to form a block.
+ *
+ * Within a GOB, data is ordered as 16B x 2 lines sectors laid in Z-shape.
+ *
+ * Parameter 'v' is the log2 encoding of the number of GOBs stacked vertically.
+ * Valid values are:
+ *
+ * 0 == ONE_GOB
+ * 1 == TWO_GOBS
+ * 2 == FOUR_GOBS
+ * 3 == EIGHT_GOBS
+ * 4 == SIXTEEN_GOBS
+ * 5 == THIRTYTWO_GOBS
+ *
+ * Chapter 20 "Pixel Memory Formats" of the Tegra X1 TRM describes this format
+ * in full detail.
+ */
+#define DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK(v) \
+	DRM_FORMAT_MOD_NVIDIA_BLOCK_LINEAR_2D(0, 0, 0, 0, (v))
+
+#define DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK_ONE_GOB \
+	DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK(0)
+#define DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK_TWO_GOB \
+	DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK(1)
+#define DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK_FOUR_GOB \
+	DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK(2)
+#define DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK_EIGHT_GOB \
+	DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK(3)
+#define DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK_SIXTEEN_GOB \
+	DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK(4)
+#define DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK_THIRTYTWO_GOB \
+	DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK(5)
+
+/*
+ * Some Broadcom modifiers take parameters, for example the number of
+ * vertical lines in the image. Reserve the lower 32 bits for modifier
+ * type, and the next 24 bits for parameters. Top 8 bits are the
+ * vendor code.
+ */
+#define __fourcc_mod_broadcom_param_shift 8
+#define __fourcc_mod_broadcom_param_bits 48
+#define fourcc_mod_broadcom_code(val, params) \
+	fourcc_mod_code(BROADCOM, ((((__u64)params) << __fourcc_mod_broadcom_param_shift) | val))
+#define fourcc_mod_broadcom_param(m) \
+	((int)(((m) >> __fourcc_mod_broadcom_param_shift) &	\
+	       ((1ULL << __fourcc_mod_broadcom_param_bits) - 1)))
+#define fourcc_mod_broadcom_mod(m) \
+	((m) & ~(((1ULL << __fourcc_mod_broadcom_param_bits) - 1) <<	\
+		 __fourcc_mod_broadcom_param_shift))
+
+/*
+ * Broadcom VC4 "T" format
+ *
+ * This is the primary layout that the V3D GPU can texture from (it
+ * can't do linear).  The T format has:
+ *
+ * - 64b utiles of pixels in a raster-order grid according to cpp.  It's 4x4
+ *   pixels at 32 bit depth.
+ *
+ * - 1k subtiles made of a 4x4 raster-order grid of 64b utiles (so usually
+ *   16x16 pixels).
+ *
+ * - 4k tiles made of a 2x2 grid of 1k subtiles (so usually 32x32 pixels).  On
+ *   even 4k tile rows, they're arranged as (BL, TL, TR, BR), and on odd rows
+ *   they're (TR, BR, BL, TL), where bottom left is start of memory.
+ *
+ * - an image made of 4k tiles in rows either left-to-right (even rows of 4k
+ *   tiles) or right-to-left (odd rows of 4k tiles).
+ */
+#define DRM_FORMAT_MOD_BROADCOM_VC4_T_TILED fourcc_mod_code(BROADCOM, 1)
+
+/*
+ * Broadcom SAND format
+ *
+ * This is the native format that the H.264 codec block uses.  For VC4
+ * HVS, it is only valid for H.264 (NV12/21) and RGBA modes.
+ *
+ * The image can be considered to be split into columns, and the
+ * columns are placed consecutively into memory.  The width of those
+ * columns can be either 32, 64, 128, or 256 pixels, but in practice
+ * only 128 pixel columns are used.
+ *
+ * The pitch between the start of each column is set to optimally
+ * switch between SDRAM banks. This is passed as the number of lines
+ * of column width in the modifier (we can't use the stride value due
+ * to various core checks that look at it , so you should set the
+ * stride to width*cpp).
+ *
+ * Note that the column height for this format modifier is the same
+ * for all of the planes, assuming that each column contains both Y
+ * and UV.  Some SAND-using hardware stores UV in a separate tiled
+ * image from Y to reduce the column height, which is not supported
+ * with these modifiers.
+ */
+
+#define DRM_FORMAT_MOD_BROADCOM_SAND32_COL_HEIGHT(v) \
+	fourcc_mod_broadcom_code(2, v)
+#define DRM_FORMAT_MOD_BROADCOM_SAND64_COL_HEIGHT(v) \
+	fourcc_mod_broadcom_code(3, v)
+#define DRM_FORMAT_MOD_BROADCOM_SAND128_COL_HEIGHT(v) \
+	fourcc_mod_broadcom_code(4, v)
+#define DRM_FORMAT_MOD_BROADCOM_SAND256_COL_HEIGHT(v) \
+	fourcc_mod_broadcom_code(5, v)
+
+#define DRM_FORMAT_MOD_BROADCOM_SAND32 \
+	DRM_FORMAT_MOD_BROADCOM_SAND32_COL_HEIGHT(0)
+#define DRM_FORMAT_MOD_BROADCOM_SAND64 \
+	DRM_FORMAT_MOD_BROADCOM_SAND64_COL_HEIGHT(0)
+#define DRM_FORMAT_MOD_BROADCOM_SAND128 \
+	DRM_FORMAT_MOD_BROADCOM_SAND128_COL_HEIGHT(0)
+#define DRM_FORMAT_MOD_BROADCOM_SAND256 \
+	DRM_FORMAT_MOD_BROADCOM_SAND256_COL_HEIGHT(0)
+
+/* Broadcom UIF format
+ *
+ * This is the common format for the current Broadcom multimedia
+ * blocks, including V3D 3.x and newer, newer video codecs, and
+ * displays.
+ *
+ * The image consists of utiles (64b blocks), UIF blocks (2x2 utiles),
+ * and macroblocks (4x4 UIF blocks).  Those 4x4 UIF block groups are
+ * stored in columns, with padding between the columns to ensure that
+ * moving from one column to the next doesn't hit the same SDRAM page
+ * bank.
+ *
+ * To calculate the padding, it is assumed that each hardware block
+ * and the software driving it knows the platform's SDRAM page size,
+ * number of banks, and XOR address, and that it's identical between
+ * all blocks using the format.  This tiling modifier will use XOR as
+ * necessary to reduce the padding.  If a hardware block can't do XOR,
+ * the assumption is that a no-XOR tiling modifier will be created.
+ */
+#define DRM_FORMAT_MOD_BROADCOM_UIF fourcc_mod_code(BROADCOM, 6)
+
+/*
+ * Arm Framebuffer Compression (AFBC) modifiers
+ *
+ * AFBC is a proprietary lossless image compression protocol and format.
+ * It provides fine-grained random access and minimizes the amount of data
+ * transferred between IP blocks.
+ *
+ * AFBC has several features which may be supported and/or used, which are
+ * represented using bits in the modifier. Not all combinations are valid,
+ * and different devices or use-cases may support different combinations.
+ *
+ * Further information on the use of AFBC modifiers can be found in
+ * Documentation/gpu/afbc.rst
+ */
+
+/*
+ * The top 4 bits (out of the 56 bits alloted for specifying vendor specific
+ * modifiers) denote the category for modifiers. Currently we have three
+ * categories of modifiers ie AFBC, MISC and AFRC. We can have a maximum of
+ * sixteen different categories.
+ */
+#define DRM_FORMAT_MOD_ARM_CODE(__type, __val) \
+	fourcc_mod_code(ARM, ((__u64)(__type) << 52) | ((__val) & 0x000fffffffffffffULL))
+
+#define DRM_FORMAT_MOD_ARM_TYPE_AFBC 0x00
+#define DRM_FORMAT_MOD_ARM_TYPE_MISC 0x01
+
+#define DRM_FORMAT_MOD_ARM_AFBC(__afbc_mode) \
+	DRM_FORMAT_MOD_ARM_CODE(DRM_FORMAT_MOD_ARM_TYPE_AFBC, __afbc_mode)
+
+/*
+ * AFBC superblock size
+ *
+ * Indicates the superblock size(s) used for the AFBC buffer. The buffer
+ * size (in pixels) must be aligned to a multiple of the superblock size.
+ * Four lowest significant bits(LSBs) are reserved for block size.
+ *
+ * Where one superblock size is specified, it applies to all planes of the
+ * buffer (e.g. 16x16, 32x8). When multiple superblock sizes are specified,
+ * the first applies to the Luma plane and the second applies to the Chroma
+ * plane(s). e.g. (32x8_64x4 means 32x8 Luma, with 64x4 Chroma).
+ * Multiple superblock sizes are only valid for multi-plane YCbCr formats.
+ */
+#define AFBC_FORMAT_MOD_BLOCK_SIZE_MASK      0xf
+#define AFBC_FORMAT_MOD_BLOCK_SIZE_16x16     (1ULL)
+#define AFBC_FORMAT_MOD_BLOCK_SIZE_32x8      (2ULL)
+#define AFBC_FORMAT_MOD_BLOCK_SIZE_64x4      (3ULL)
+#define AFBC_FORMAT_MOD_BLOCK_SIZE_32x8_64x4 (4ULL)
+
+/*
+ * AFBC lossless colorspace transform
+ *
+ * Indicates that the buffer makes use of the AFBC lossless colorspace
+ * transform.
+ */
+#define AFBC_FORMAT_MOD_YTR     (1ULL <<  4)
+
+/*
+ * AFBC block-split
+ *
+ * Indicates that the payload of each superblock is split. The second
+ * half of the payload is positioned at a predefined offset from the start
+ * of the superblock payload.
+ */
+#define AFBC_FORMAT_MOD_SPLIT   (1ULL <<  5)
+
+/*
+ * AFBC sparse layout
+ *
+ * This flag indicates that the payload of each superblock must be stored at a
+ * predefined position relative to the other superblocks in the same AFBC
+ * buffer. This order is the same order used by the header buffer. In this mode
+ * each superblock is given the same amount of space as an uncompressed
+ * superblock of the particular format would require, rounding up to the next
+ * multiple of 128 bytes in size.
+ */
+#define AFBC_FORMAT_MOD_SPARSE  (1ULL <<  6)
+
+/*
+ * AFBC copy-block restrict
+ *
+ * Buffers with this flag must obey the copy-block restriction. The restriction
+ * is such that there are no copy-blocks referring across the border of 8x8
+ * blocks. For the subsampled data the 8x8 limitation is also subsampled.
+ */
+#define AFBC_FORMAT_MOD_CBR     (1ULL <<  7)
+
+/*
+ * AFBC tiled layout
+ *
+ * The tiled layout groups superblocks in 8x8 or 4x4 tiles, where all
+ * superblocks inside a tile are stored together in memory. 8x8 tiles are used
+ * for pixel formats up to and including 32 bpp while 4x4 tiles are used for
+ * larger bpp formats. The order between the tiles is scan line.
+ * When the tiled layout is used, the buffer size (in pixels) must be aligned
+ * to the tile size.
+ */
+#define AFBC_FORMAT_MOD_TILED   (1ULL <<  8)
+
+/*
+ * AFBC solid color blocks
+ *
+ * Indicates that the buffer makes use of solid-color blocks, whereby bandwidth
+ * can be reduced if a whole superblock is a single color.
+ */
+#define AFBC_FORMAT_MOD_SC      (1ULL <<  9)
+
+/*
+ * AFBC double-buffer
+ *
+ * Indicates that the buffer is allocated in a layout safe for front-buffer
+ * rendering.
+ */
+#define AFBC_FORMAT_MOD_DB      (1ULL << 10)
+
+/*
+ * AFBC buffer content hints
+ *
+ * Indicates that the buffer includes per-superblock content hints.
+ */
+#define AFBC_FORMAT_MOD_BCH     (1ULL << 11)
+
+/* AFBC uncompressed storage mode
+ *
+ * Indicates that the buffer is using AFBC uncompressed storage mode.
+ * In this mode all superblock payloads in the buffer use the uncompressed
+ * storage mode, which is usually only used for data which cannot be compressed.
+ * The buffer layout is the same as for AFBC buffers without USM set, this only
+ * affects the storage mode of the individual superblocks. Note that even a
+ * buffer without USM set may use uncompressed storage mode for some or all
+ * superblocks, USM just guarantees it for all.
+ */
+#define AFBC_FORMAT_MOD_USM	(1ULL << 12)
+
+/*
+ * Arm Fixed-Rate Compression (AFRC) modifiers
+ *
+ * AFRC is a proprietary fixed rate image compression protocol and format,
+ * designed to provide guaranteed bandwidth and memory footprint
+ * reductions in graphics and media use-cases.
+ *
+ * AFRC buffers consist of one or more planes, with the same components
+ * and meaning as an uncompressed buffer using the same pixel format.
+ *
+ * Within each plane, the pixel/luma/chroma values are grouped into
+ * "coding unit" blocks which are individually compressed to a
+ * fixed size (in bytes). All coding units within a given plane of a buffer
+ * store the same number of values, and have the same compressed size.
+ *
+ * The coding unit size is configurable, allowing different rates of compression.
+ *
+ * The start of each AFRC buffer plane must be aligned to an alignment granule which
+ * depends on the coding unit size.
+ *
+ * Coding Unit Size   Plane Alignment
+ * ----------------   ---------------
+ * 16 bytes           1024 bytes
+ * 24 bytes           512  bytes
+ * 32 bytes           2048 bytes
+ *
+ * Coding units are grouped into paging tiles. AFRC buffer dimensions must be aligned
+ * to a multiple of the paging tile dimensions.
+ * The dimensions of each paging tile depend on whether the buffer is optimised for
+ * scanline (SCAN layout) or rotated (ROT layout) access.
+ *
+ * Layout   Paging Tile Width   Paging Tile Height
+ * ------   -----------------   ------------------
+ * SCAN     16 coding units     4 coding units
+ * ROT      8  coding units     8 coding units
+ *
+ * The dimensions of each coding unit depend on the number of components
+ * in the compressed plane and whether the buffer is optimised for
+ * scanline (SCAN layout) or rotated (ROT layout) access.
+ *
+ * Number of Components in Plane   Layout      Coding Unit Width   Coding Unit Height
+ * -----------------------------   ---------   -----------------   ------------------
+ * 1                               SCAN        16 samples          4 samples
+ * Example: 16x4 luma samples in a 'Y' plane
+ *          16x4 chroma 'V' values, in the 'V' plane of a fully-planar YUV buffer
+ * -----------------------------   ---------   -----------------   ------------------
+ * 1                               ROT         8 samples           8 samples
+ * Example: 8x8 luma samples in a 'Y' plane
+ *          8x8 chroma 'V' values, in the 'V' plane of a fully-planar YUV buffer
+ * -----------------------------   ---------   -----------------   ------------------
+ * 2                               DONT CARE   8 samples           4 samples
+ * Example: 8x4 chroma pairs in the 'UV' plane of a semi-planar YUV buffer
+ * -----------------------------   ---------   -----------------   ------------------
+ * 3                               DONT CARE   4 samples           4 samples
+ * Example: 4x4 pixels in an RGB buffer without alpha
+ * -----------------------------   ---------   -----------------   ------------------
+ * 4                               DONT CARE   4 samples           4 samples
+ * Example: 4x4 pixels in an RGB buffer with alpha
+ */
+
+#define DRM_FORMAT_MOD_ARM_TYPE_AFRC 0x02
+
+#define DRM_FORMAT_MOD_ARM_AFRC(__afrc_mode) \
+	DRM_FORMAT_MOD_ARM_CODE(DRM_FORMAT_MOD_ARM_TYPE_AFRC, __afrc_mode)
+
+/*
+ * AFRC coding unit size modifier.
+ *
+ * Indicates the number of bytes used to store each compressed coding unit for
+ * one or more planes in an AFRC encoded buffer. The coding unit size for chrominance
+ * is the same for both Cb and Cr, which may be stored in separate planes.
+ *
+ * AFRC_FORMAT_MOD_CU_SIZE_P0 indicates the number of bytes used to store
+ * each compressed coding unit in the first plane of the buffer. For RGBA buffers
+ * this is the only plane, while for semi-planar and fully-planar YUV buffers,
+ * this corresponds to the luma plane.
+ *
+ * AFRC_FORMAT_MOD_CU_SIZE_P12 indicates the number of bytes used to store
+ * each compressed coding unit in the second and third planes in the buffer.
+ * For semi-planar and fully-planar YUV buffers, this corresponds to the chroma plane(s).
+ *
+ * For single-plane buffers, AFRC_FORMAT_MOD_CU_SIZE_P0 must be specified
+ * and AFRC_FORMAT_MOD_CU_SIZE_P12 must be zero.
+ * For semi-planar and fully-planar buffers, both AFRC_FORMAT_MOD_CU_SIZE_P0 and
+ * AFRC_FORMAT_MOD_CU_SIZE_P12 must be specified.
+ */
+#define AFRC_FORMAT_MOD_CU_SIZE_MASK 0xf
+#define AFRC_FORMAT_MOD_CU_SIZE_16 (1ULL)
+#define AFRC_FORMAT_MOD_CU_SIZE_24 (2ULL)
+#define AFRC_FORMAT_MOD_CU_SIZE_32 (3ULL)
+
+#define AFRC_FORMAT_MOD_CU_SIZE_P0(__afrc_cu_size) (__afrc_cu_size)
+#define AFRC_FORMAT_MOD_CU_SIZE_P12(__afrc_cu_size) ((__afrc_cu_size) << 4)
+
+/*
+ * AFRC scanline memory layout.
+ *
+ * Indicates if the buffer uses the scanline-optimised layout
+ * for an AFRC encoded buffer, otherwise, it uses the rotation-optimised layout.
+ * The memory layout is the same for all planes.
+ */
+#define AFRC_FORMAT_MOD_LAYOUT_SCAN (1ULL << 8)
+
+/*
+ * Arm 16x16 Block U-Interleaved modifier
+ *
+ * This is used by Arm Mali Utgard and Midgard GPUs. It divides the image
+ * into 16x16 pixel blocks. Blocks are stored linearly in order, but pixels
+ * in the block are reordered.
+ */
+#define DRM_FORMAT_MOD_ARM_16X16_BLOCK_U_INTERLEAVED \
+	DRM_FORMAT_MOD_ARM_CODE(DRM_FORMAT_MOD_ARM_TYPE_MISC, 1ULL)
+
+/*
+ * Allwinner tiled modifier
+ *
+ * This tiling mode is implemented by the VPU found on all Allwinner platforms,
+ * codenamed sunxi. It is associated with a YUV format that uses either 2 or 3
+ * planes.
+ *
+ * With this tiling, the luminance samples are disposed in tiles representing
+ * 32x32 pixels and the chrominance samples in tiles representing 32x64 pixels.
+ * The pixel order in each tile is linear and the tiles are disposed linearly,
+ * both in row-major order.
+ */
+#define DRM_FORMAT_MOD_ALLWINNER_TILED fourcc_mod_code(ALLWINNER, 1)
+
+/*
+ * Amlogic Video Framebuffer Compression modifiers
+ *
+ * Amlogic uses a proprietary lossless image compression protocol and format
+ * for their hardware video codec accelerators, either video decoders or
+ * video input encoders.
+ *
+ * It considerably reduces memory bandwidth while writing and reading
+ * frames in memory.
+ *
+ * The underlying storage is considered to be 3 components, 8bit or 10-bit
+ * per component YCbCr 420, single plane :
+ * - DRM_FORMAT_YUV420_8BIT
+ * - DRM_FORMAT_YUV420_10BIT
+ *
+ * The first 8 bits of the mode defines the layout, then the following 8 bits
+ * defines the options changing the layout.
+ *
+ * Not all combinations are valid, and different SoCs may support different
+ * combinations of layout and options.
+ */
+#define __fourcc_mod_amlogic_layout_mask 0xff
+#define __fourcc_mod_amlogic_options_shift 8
+#define __fourcc_mod_amlogic_options_mask 0xff
+
+#define DRM_FORMAT_MOD_AMLOGIC_FBC(__layout, __options) \
+	fourcc_mod_code(AMLOGIC, \
+			((__layout) & __fourcc_mod_amlogic_layout_mask) | \
+			(((__options) & __fourcc_mod_amlogic_options_mask) \
+			 << __fourcc_mod_amlogic_options_shift))
+
+/* Amlogic FBC Layouts */
+
+/*
+ * Amlogic FBC Basic Layout
+ *
+ * The basic layout is composed of:
+ * - a body content organized in 64x32 superblocks with 4096 bytes per
+ *   superblock in default mode.
+ * - a 32 bytes per 128x64 header block
+ *
+ * This layout is transferrable between Amlogic SoCs supporting this modifier.
+ */
+#define AMLOGIC_FBC_LAYOUT_BASIC		(1ULL)
+
+/*
+ * Amlogic FBC Scatter Memory layout
+ *
+ * Indicates the header contains IOMMU references to the compressed
+ * frames content to optimize memory access and layout.
+ *
+ * In this mode, only the header memory address is needed, thus the
+ * content memory organization is tied to the current producer
+ * execution and cannot be saved/dumped neither transferrable between
+ * Amlogic SoCs supporting this modifier.
+ *
+ * Due to the nature of the layout, these buffers are not expected to
+ * be accessible by the user-space clients, but only accessible by the
+ * hardware producers and consumers.
+ *
+ * The user-space clients should expect a failure while trying to mmap
+ * the DMA-BUF handle returned by the producer.
+ */
+#define AMLOGIC_FBC_LAYOUT_SCATTER		(2ULL)
+
+/* Amlogic FBC Layout Options Bit Mask */
+
+/*
+ * Amlogic FBC Memory Saving mode
+ *
+ * Indicates the storage is packed when pixel size is multiple of word
+ * boudaries, i.e. 8bit should be stored in this mode to save allocation
+ * memory.
+ *
+ * This mode reduces body layout to 3072 bytes per 64x32 superblock with
+ * the basic layout and 3200 bytes per 64x32 superblock combined with
+ * the scatter layout.
+ */
+#define AMLOGIC_FBC_OPTION_MEM_SAVING		(1ULL << 0)
+
+/*
+ * AMD modifiers
+ *
+ * Memory layout:
+ *
+ * without DCC:
+ *   - main surface
+ *
+ * with DCC & without DCC_RETILE:
+ *   - main surface in plane 0
+ *   - DCC surface in plane 1 (RB-aligned, pipe-aligned if DCC_PIPE_ALIGN is set)
+ *
+ * with DCC & DCC_RETILE:
+ *   - main surface in plane 0
+ *   - displayable DCC surface in plane 1 (not RB-aligned & not pipe-aligned)
+ *   - pipe-aligned DCC surface in plane 2 (RB-aligned & pipe-aligned)
+ *
+ * For multi-plane formats the above surfaces get merged into one plane for
+ * each format plane, based on the required alignment only.
+ *
+ * Bits  Parameter                Notes
+ * ----- ------------------------ ---------------------------------------------
+ *
+ *   7:0 TILE_VERSION             Values are AMD_FMT_MOD_TILE_VER_*
+ *  12:8 TILE                     Values are AMD_FMT_MOD_TILE_<version>_*
+ *    13 DCC
+ *    14 DCC_RETILE
+ *    15 DCC_PIPE_ALIGN
+ *    16 DCC_INDEPENDENT_64B
+ *    17 DCC_INDEPENDENT_128B
+ * 19:18 DCC_MAX_COMPRESSED_BLOCK Values are AMD_FMT_MOD_DCC_BLOCK_*
+ *    20 DCC_CONSTANT_ENCODE
+ * 23:21 PIPE_XOR_BITS            Only for some chips
+ * 26:24 BANK_XOR_BITS            Only for some chips
+ * 29:27 PACKERS                  Only for some chips
+ * 32:30 RB                       Only for some chips
+ * 35:33 PIPE                     Only for some chips
+ * 55:36 -                        Reserved for future use, must be zero
+ */
+#define AMD_FMT_MOD fourcc_mod_code(AMD, 0)
+
+#define IS_AMD_FMT_MOD(val) (((val) >> 56) == DRM_FORMAT_MOD_VENDOR_AMD)
+
+/* Reserve 0 for GFX8 and older */
+#define AMD_FMT_MOD_TILE_VER_GFX9 1
+#define AMD_FMT_MOD_TILE_VER_GFX10 2
+#define AMD_FMT_MOD_TILE_VER_GFX10_RBPLUS 3
+
+/*
+ * 64K_S is the same for GFX9/GFX10/GFX10_RBPLUS and hence has GFX9 as canonical
+ * version.
+ */
+#define AMD_FMT_MOD_TILE_GFX9_64K_S 9
+
+/*
+ * 64K_D for non-32 bpp is the same for GFX9/GFX10/GFX10_RBPLUS and hence has
+ * GFX9 as canonical version.
+ */
+#define AMD_FMT_MOD_TILE_GFX9_64K_D 10
+#define AMD_FMT_MOD_TILE_GFX9_64K_S_X 25
+#define AMD_FMT_MOD_TILE_GFX9_64K_D_X 26
+#define AMD_FMT_MOD_TILE_GFX9_64K_R_X 27
+
+#define AMD_FMT_MOD_DCC_BLOCK_64B 0
+#define AMD_FMT_MOD_DCC_BLOCK_128B 1
+#define AMD_FMT_MOD_DCC_BLOCK_256B 2
+
+#define AMD_FMT_MOD_TILE_VERSION_SHIFT 0
+#define AMD_FMT_MOD_TILE_VERSION_MASK 0xFF
+#define AMD_FMT_MOD_TILE_SHIFT 8
+#define AMD_FMT_MOD_TILE_MASK 0x1F
+
+/* Whether DCC compression is enabled. */
+#define AMD_FMT_MOD_DCC_SHIFT 13
+#define AMD_FMT_MOD_DCC_MASK 0x1
+
+/*
+ * Whether to include two DCC surfaces, one which is rb & pipe aligned, and
+ * one which is not-aligned.
+ */
+#define AMD_FMT_MOD_DCC_RETILE_SHIFT 14
+#define AMD_FMT_MOD_DCC_RETILE_MASK 0x1
+
+/* Only set if DCC_RETILE = false */
+#define AMD_FMT_MOD_DCC_PIPE_ALIGN_SHIFT 15
+#define AMD_FMT_MOD_DCC_PIPE_ALIGN_MASK 0x1
+
+#define AMD_FMT_MOD_DCC_INDEPENDENT_64B_SHIFT 16
+#define AMD_FMT_MOD_DCC_INDEPENDENT_64B_MASK 0x1
+#define AMD_FMT_MOD_DCC_INDEPENDENT_128B_SHIFT 17
+#define AMD_FMT_MOD_DCC_INDEPENDENT_128B_MASK 0x1
+#define AMD_FMT_MOD_DCC_MAX_COMPRESSED_BLOCK_SHIFT 18
+#define AMD_FMT_MOD_DCC_MAX_COMPRESSED_BLOCK_MASK 0x3
+
+/*
+ * DCC supports embedding some clear colors directly in the DCC surface.
+ * However, on older GPUs the rendering HW ignores the embedded clear color
+ * and prefers the driver provided color. This necessitates doing a fastclear
+ * eliminate operation before a process transfers control.
+ *
+ * If this bit is set that means the fastclear eliminate is not needed for these
+ * embeddable colors.
+ */
+#define AMD_FMT_MOD_DCC_CONSTANT_ENCODE_SHIFT 20
+#define AMD_FMT_MOD_DCC_CONSTANT_ENCODE_MASK 0x1
+
+/*
+ * The below fields are for accounting for per GPU differences. These are only
+ * relevant for GFX9 and later and if the tile field is *_X/_T.
+ *
+ * PIPE_XOR_BITS = always needed
+ * BANK_XOR_BITS = only for TILE_VER_GFX9
+ * PACKERS = only for TILE_VER_GFX10_RBPLUS
+ * RB = only for TILE_VER_GFX9 & DCC
+ * PIPE = only for TILE_VER_GFX9 & DCC & (DCC_RETILE | DCC_PIPE_ALIGN)
+ */
+#define AMD_FMT_MOD_PIPE_XOR_BITS_SHIFT 21
+#define AMD_FMT_MOD_PIPE_XOR_BITS_MASK 0x7
+#define AMD_FMT_MOD_BANK_XOR_BITS_SHIFT 24
+#define AMD_FMT_MOD_BANK_XOR_BITS_MASK 0x7
+#define AMD_FMT_MOD_PACKERS_SHIFT 27
+#define AMD_FMT_MOD_PACKERS_MASK 0x7
+#define AMD_FMT_MOD_RB_SHIFT 30
+#define AMD_FMT_MOD_RB_MASK 0x7
+#define AMD_FMT_MOD_PIPE_SHIFT 33
+#define AMD_FMT_MOD_PIPE_MASK 0x7
+
+#define AMD_FMT_MOD_SET(field, value) \
+	((uint64_t)(value) << AMD_FMT_MOD_##field##_SHIFT)
+#define AMD_FMT_MOD_GET(field, value) \
+	(((value) >> AMD_FMT_MOD_##field##_SHIFT) & AMD_FMT_MOD_##field##_MASK)
+#define AMD_FMT_MOD_CLEAR(field) \
+	(~((uint64_t)AMD_FMT_MOD_##field##_MASK << AMD_FMT_MOD_##field##_SHIFT))
+
+#if defined(__cplusplus)
+}
+#endif
+
+#endif /* DRM_FOURCC_H */
diff --git a/third_party/drm/drm/drm_mode.h b/third_party/drm/drm/drm_mode.h
new file mode 100644
index 0000000..e1e3516
--- /dev/null
+++ b/third_party/drm/drm/drm_mode.h
@@ -0,0 +1,1217 @@
+/*
+ * Copyright (c) 2007 Dave Airlie <airlied@linux.ie>
+ * Copyright (c) 2007 Jakob Bornecrantz <wallbraker@gmail.com>
+ * Copyright (c) 2008 Red Hat Inc.
+ * Copyright (c) 2007-2008 Tungsten Graphics, Inc., Cedar Park, TX., USA
+ * Copyright (c) 2007-2008 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+#ifndef _DRM_MODE_H
+#define _DRM_MODE_H
+
+#include "drm.h"
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+/**
+ * DOC: overview
+ *
+ * DRM exposes many UAPI and structure definition to have a consistent
+ * and standardized interface with user.
+ * Userspace can refer to these structure definitions and UAPI formats
+ * to communicate to driver
+ */
+
+#define DRM_CONNECTOR_NAME_LEN	32
+#define DRM_DISPLAY_MODE_LEN	32
+#define DRM_PROP_NAME_LEN	32
+
+#define DRM_MODE_TYPE_BUILTIN	(1<<0) /* deprecated */
+#define DRM_MODE_TYPE_CLOCK_C	((1<<1) | DRM_MODE_TYPE_BUILTIN) /* deprecated */
+#define DRM_MODE_TYPE_CRTC_C	((1<<2) | DRM_MODE_TYPE_BUILTIN) /* deprecated */
+#define DRM_MODE_TYPE_PREFERRED	(1<<3)
+#define DRM_MODE_TYPE_DEFAULT	(1<<4) /* deprecated */
+#define DRM_MODE_TYPE_USERDEF	(1<<5)
+#define DRM_MODE_TYPE_DRIVER	(1<<6)
+
+#define DRM_MODE_TYPE_ALL	(DRM_MODE_TYPE_PREFERRED |	\
+				 DRM_MODE_TYPE_USERDEF |	\
+				 DRM_MODE_TYPE_DRIVER)
+
+/* Video mode flags */
+/* bit compatible with the xrandr RR_ definitions (bits 0-13)
+ *
+ * ABI warning: Existing userspace really expects
+ * the mode flags to match the xrandr definitions. Any
+ * changes that don't match the xrandr definitions will
+ * likely need a new client cap or some other mechanism
+ * to avoid breaking existing userspace. This includes
+ * allocating new flags in the previously unused bits!
+ */
+#define DRM_MODE_FLAG_PHSYNC			(1<<0)
+#define DRM_MODE_FLAG_NHSYNC			(1<<1)
+#define DRM_MODE_FLAG_PVSYNC			(1<<2)
+#define DRM_MODE_FLAG_NVSYNC			(1<<3)
+#define DRM_MODE_FLAG_INTERLACE			(1<<4)
+#define DRM_MODE_FLAG_DBLSCAN			(1<<5)
+#define DRM_MODE_FLAG_CSYNC			(1<<6)
+#define DRM_MODE_FLAG_PCSYNC			(1<<7)
+#define DRM_MODE_FLAG_NCSYNC			(1<<8)
+#define DRM_MODE_FLAG_HSKEW			(1<<9) /* hskew provided */
+#define DRM_MODE_FLAG_BCAST			(1<<10) /* deprecated */
+#define DRM_MODE_FLAG_PIXMUX			(1<<11) /* deprecated */
+#define DRM_MODE_FLAG_DBLCLK			(1<<12)
+#define DRM_MODE_FLAG_CLKDIV2			(1<<13)
+ /*
+  * When adding a new stereo mode don't forget to adjust DRM_MODE_FLAGS_3D_MAX
+  * (define not exposed to user space).
+  */
+#define DRM_MODE_FLAG_3D_MASK			(0x1f<<14)
+#define  DRM_MODE_FLAG_3D_NONE		(0<<14)
+#define  DRM_MODE_FLAG_3D_FRAME_PACKING		(1<<14)
+#define  DRM_MODE_FLAG_3D_FIELD_ALTERNATIVE	(2<<14)
+#define  DRM_MODE_FLAG_3D_LINE_ALTERNATIVE	(3<<14)
+#define  DRM_MODE_FLAG_3D_SIDE_BY_SIDE_FULL	(4<<14)
+#define  DRM_MODE_FLAG_3D_L_DEPTH		(5<<14)
+#define  DRM_MODE_FLAG_3D_L_DEPTH_GFX_GFX_DEPTH	(6<<14)
+#define  DRM_MODE_FLAG_3D_TOP_AND_BOTTOM	(7<<14)
+#define  DRM_MODE_FLAG_3D_SIDE_BY_SIDE_HALF	(8<<14)
+
+/* Picture aspect ratio options */
+#define DRM_MODE_PICTURE_ASPECT_NONE		0
+#define DRM_MODE_PICTURE_ASPECT_4_3		1
+#define DRM_MODE_PICTURE_ASPECT_16_9		2
+#define DRM_MODE_PICTURE_ASPECT_64_27		3
+#define DRM_MODE_PICTURE_ASPECT_256_135		4
+
+/* Content type options */
+#define DRM_MODE_CONTENT_TYPE_NO_DATA		0
+#define DRM_MODE_CONTENT_TYPE_GRAPHICS		1
+#define DRM_MODE_CONTENT_TYPE_PHOTO		2
+#define DRM_MODE_CONTENT_TYPE_CINEMA		3
+#define DRM_MODE_CONTENT_TYPE_GAME		4
+
+/* Aspect ratio flag bitmask (4 bits 22:19) */
+#define DRM_MODE_FLAG_PIC_AR_MASK		(0x0F<<19)
+#define  DRM_MODE_FLAG_PIC_AR_NONE \
+			(DRM_MODE_PICTURE_ASPECT_NONE<<19)
+#define  DRM_MODE_FLAG_PIC_AR_4_3 \
+			(DRM_MODE_PICTURE_ASPECT_4_3<<19)
+#define  DRM_MODE_FLAG_PIC_AR_16_9 \
+			(DRM_MODE_PICTURE_ASPECT_16_9<<19)
+#define  DRM_MODE_FLAG_PIC_AR_64_27 \
+			(DRM_MODE_PICTURE_ASPECT_64_27<<19)
+#define  DRM_MODE_FLAG_PIC_AR_256_135 \
+			(DRM_MODE_PICTURE_ASPECT_256_135<<19)
+
+#define  DRM_MODE_FLAG_ALL	(DRM_MODE_FLAG_PHSYNC |		\
+				 DRM_MODE_FLAG_NHSYNC |		\
+				 DRM_MODE_FLAG_PVSYNC |		\
+				 DRM_MODE_FLAG_NVSYNC |		\
+				 DRM_MODE_FLAG_INTERLACE |	\
+				 DRM_MODE_FLAG_DBLSCAN |	\
+				 DRM_MODE_FLAG_CSYNC |		\
+				 DRM_MODE_FLAG_PCSYNC |		\
+				 DRM_MODE_FLAG_NCSYNC |		\
+				 DRM_MODE_FLAG_HSKEW |		\
+				 DRM_MODE_FLAG_DBLCLK |		\
+				 DRM_MODE_FLAG_CLKDIV2 |	\
+				 DRM_MODE_FLAG_3D_MASK)
+
+/* DPMS flags */
+/* bit compatible with the xorg definitions. */
+#define DRM_MODE_DPMS_ON	0
+#define DRM_MODE_DPMS_STANDBY	1
+#define DRM_MODE_DPMS_SUSPEND	2
+#define DRM_MODE_DPMS_OFF	3
+
+/* Scaling mode options */
+#define DRM_MODE_SCALE_NONE		0 /* Unmodified timing (display or
+					     software can still scale) */
+#define DRM_MODE_SCALE_FULLSCREEN	1 /* Full screen, ignore aspect */
+#define DRM_MODE_SCALE_CENTER		2 /* Centered, no scaling */
+#define DRM_MODE_SCALE_ASPECT		3 /* Full screen, preserve aspect */
+
+/* Dithering mode options */
+#define DRM_MODE_DITHERING_OFF	0
+#define DRM_MODE_DITHERING_ON	1
+#define DRM_MODE_DITHERING_AUTO 2
+
+/* Dirty info options */
+#define DRM_MODE_DIRTY_OFF      0
+#define DRM_MODE_DIRTY_ON       1
+#define DRM_MODE_DIRTY_ANNOTATE 2
+
+/* Link Status options */
+#define DRM_MODE_LINK_STATUS_GOOD	0
+#define DRM_MODE_LINK_STATUS_BAD	1
+
+/*
+ * DRM_MODE_ROTATE_<degrees>
+ *
+ * Signals that a drm plane is been rotated <degrees> degrees in counter
+ * clockwise direction.
+ *
+ * This define is provided as a convenience, looking up the property id
+ * using the name->prop id lookup is the preferred method.
+ */
+#define DRM_MODE_ROTATE_0       (1<<0)
+#define DRM_MODE_ROTATE_90      (1<<1)
+#define DRM_MODE_ROTATE_180     (1<<2)
+#define DRM_MODE_ROTATE_270     (1<<3)
+
+/*
+ * DRM_MODE_ROTATE_MASK
+ *
+ * Bitmask used to look for drm plane rotations.
+ */
+#define DRM_MODE_ROTATE_MASK (\
+		DRM_MODE_ROTATE_0  | \
+		DRM_MODE_ROTATE_90  | \
+		DRM_MODE_ROTATE_180 | \
+		DRM_MODE_ROTATE_270)
+
+/*
+ * DRM_MODE_REFLECT_<axis>
+ *
+ * Signals that the contents of a drm plane is reflected along the <axis> axis,
+ * in the same way as mirroring.
+ * See kerneldoc chapter "Plane Composition Properties" for more details.
+ *
+ * This define is provided as a convenience, looking up the property id
+ * using the name->prop id lookup is the preferred method.
+ */
+#define DRM_MODE_REFLECT_X      (1<<4)
+#define DRM_MODE_REFLECT_Y      (1<<5)
+
+/*
+ * DRM_MODE_REFLECT_MASK
+ *
+ * Bitmask used to look for drm plane reflections.
+ */
+#define DRM_MODE_REFLECT_MASK (\
+		DRM_MODE_REFLECT_X | \
+		DRM_MODE_REFLECT_Y)
+
+/* Content Protection Flags */
+#define DRM_MODE_CONTENT_PROTECTION_UNDESIRED	0
+#define DRM_MODE_CONTENT_PROTECTION_DESIRED     1
+#define DRM_MODE_CONTENT_PROTECTION_ENABLED     2
+
+/**
+ * struct drm_mode_modeinfo - Display mode information.
+ * @clock: pixel clock in kHz
+ * @hdisplay: horizontal display size
+ * @hsync_start: horizontal sync start
+ * @hsync_end: horizontal sync end
+ * @htotal: horizontal total size
+ * @hskew: horizontal skew
+ * @vdisplay: vertical display size
+ * @vsync_start: vertical sync start
+ * @vsync_end: vertical sync end
+ * @vtotal: vertical total size
+ * @vscan: vertical scan
+ * @vrefresh: approximate vertical refresh rate in Hz
+ * @flags: bitmask of misc. flags, see DRM_MODE_FLAG_* defines
+ * @type: bitmask of type flags, see DRM_MODE_TYPE_* defines
+ * @name: string describing the mode resolution
+ *
+ * This is the user-space API display mode information structure. For the
+ * kernel version see struct drm_display_mode.
+ */
+struct drm_mode_modeinfo {
+	__u32 clock;
+	__u16 hdisplay;
+	__u16 hsync_start;
+	__u16 hsync_end;
+	__u16 htotal;
+	__u16 hskew;
+	__u16 vdisplay;
+	__u16 vsync_start;
+	__u16 vsync_end;
+	__u16 vtotal;
+	__u16 vscan;
+
+	__u32 vrefresh;
+
+	__u32 flags;
+	__u32 type;
+	char name[DRM_DISPLAY_MODE_LEN];
+};
+
+struct drm_mode_card_res {
+	__u64 fb_id_ptr;
+	__u64 crtc_id_ptr;
+	__u64 connector_id_ptr;
+	__u64 encoder_id_ptr;
+	__u32 count_fbs;
+	__u32 count_crtcs;
+	__u32 count_connectors;
+	__u32 count_encoders;
+	__u32 min_width;
+	__u32 max_width;
+	__u32 min_height;
+	__u32 max_height;
+};
+
+struct drm_mode_crtc {
+	__u64 set_connectors_ptr;
+	__u32 count_connectors;
+
+	__u32 crtc_id; /**< Id */
+	__u32 fb_id; /**< Id of framebuffer */
+
+	__u32 x; /**< x Position on the framebuffer */
+	__u32 y; /**< y Position on the framebuffer */
+
+	__u32 gamma_size;
+	__u32 mode_valid;
+	struct drm_mode_modeinfo mode;
+};
+
+#define DRM_MODE_PRESENT_TOP_FIELD	(1<<0)
+#define DRM_MODE_PRESENT_BOTTOM_FIELD	(1<<1)
+
+/* Planes blend with or override other bits on the CRTC */
+struct drm_mode_set_plane {
+	__u32 plane_id;
+	__u32 crtc_id;
+	__u32 fb_id; /* fb object contains surface format type */
+	__u32 flags; /* see above flags */
+
+	/* Signed dest location allows it to be partially off screen */
+	__s32 crtc_x;
+	__s32 crtc_y;
+	__u32 crtc_w;
+	__u32 crtc_h;
+
+	/* Source values are 16.16 fixed point */
+	__u32 src_x;
+	__u32 src_y;
+	__u32 src_h;
+	__u32 src_w;
+};
+
+/**
+ * struct drm_mode_get_plane - Get plane metadata.
+ *
+ * Userspace can perform a GETPLANE ioctl to retrieve information about a
+ * plane.
+ *
+ * To retrieve the number of formats supported, set @count_format_types to zero
+ * and call the ioctl. @count_format_types will be updated with the value.
+ *
+ * To retrieve these formats, allocate an array with the memory needed to store
+ * @count_format_types formats. Point @format_type_ptr to this array and call
+ * the ioctl again (with @count_format_types still set to the value returned in
+ * the first ioctl call).
+ */
+struct drm_mode_get_plane {
+	/**
+	 * @plane_id: Object ID of the plane whose information should be
+	 * retrieved. Set by caller.
+	 */
+	__u32 plane_id;
+
+	/** @crtc_id: Object ID of the current CRTC. */
+	__u32 crtc_id;
+	/** @fb_id: Object ID of the current fb. */
+	__u32 fb_id;
+
+	/**
+	 * @possible_crtcs: Bitmask of CRTC's compatible with the plane. CRTC's
+	 * are created and they receive an index, which corresponds to their
+	 * position in the bitmask. Bit N corresponds to
+	 * :ref:`CRTC index<crtc_index>` N.
+	 */
+	__u32 possible_crtcs;
+	/** @gamma_size: Never used. */
+	__u32 gamma_size;
+
+	/** @count_format_types: Number of formats. */
+	__u32 count_format_types;
+	/**
+	 * @format_type_ptr: Pointer to ``__u32`` array of formats that are
+	 * supported by the plane. These formats do not require modifiers.
+	 */
+	__u64 format_type_ptr;
+};
+
+struct drm_mode_get_plane_res {
+	__u64 plane_id_ptr;
+	__u32 count_planes;
+};
+
+#define DRM_MODE_ENCODER_NONE	0
+#define DRM_MODE_ENCODER_DAC	1
+#define DRM_MODE_ENCODER_TMDS	2
+#define DRM_MODE_ENCODER_LVDS	3
+#define DRM_MODE_ENCODER_TVDAC	4
+#define DRM_MODE_ENCODER_VIRTUAL 5
+#define DRM_MODE_ENCODER_DSI	6
+#define DRM_MODE_ENCODER_DPMST	7
+#define DRM_MODE_ENCODER_DPI	8
+
+struct drm_mode_get_encoder {
+	__u32 encoder_id;
+	__u32 encoder_type;
+
+	__u32 crtc_id; /**< Id of crtc */
+
+	__u32 possible_crtcs;
+	__u32 possible_clones;
+};
+
+/* This is for connectors with multiple signal types. */
+/* Try to match DRM_MODE_CONNECTOR_X as closely as possible. */
+enum drm_mode_subconnector {
+	DRM_MODE_SUBCONNECTOR_Automatic   = 0,  /* DVI-I, TV     */
+	DRM_MODE_SUBCONNECTOR_Unknown     = 0,  /* DVI-I, TV, DP */
+	DRM_MODE_SUBCONNECTOR_VGA	  = 1,  /*            DP */
+	DRM_MODE_SUBCONNECTOR_DVID	  = 3,  /* DVI-I      DP */
+	DRM_MODE_SUBCONNECTOR_DVIA	  = 4,  /* DVI-I         */
+	DRM_MODE_SUBCONNECTOR_Composite   = 5,  /*        TV     */
+	DRM_MODE_SUBCONNECTOR_SVIDEO	  = 6,  /*        TV     */
+	DRM_MODE_SUBCONNECTOR_Component   = 8,  /*        TV     */
+	DRM_MODE_SUBCONNECTOR_SCART	  = 9,  /*        TV     */
+	DRM_MODE_SUBCONNECTOR_DisplayPort = 10, /*            DP */
+	DRM_MODE_SUBCONNECTOR_HDMIA       = 11, /*            DP */
+	DRM_MODE_SUBCONNECTOR_Native      = 15, /*            DP */
+	DRM_MODE_SUBCONNECTOR_Wireless    = 18, /*            DP */
+};
+
+#define DRM_MODE_CONNECTOR_Unknown	0
+#define DRM_MODE_CONNECTOR_VGA		1
+#define DRM_MODE_CONNECTOR_DVII		2
+#define DRM_MODE_CONNECTOR_DVID		3
+#define DRM_MODE_CONNECTOR_DVIA		4
+#define DRM_MODE_CONNECTOR_Composite	5
+#define DRM_MODE_CONNECTOR_SVIDEO	6
+#define DRM_MODE_CONNECTOR_LVDS		7
+#define DRM_MODE_CONNECTOR_Component	8
+#define DRM_MODE_CONNECTOR_9PinDIN	9
+#define DRM_MODE_CONNECTOR_DisplayPort	10
+#define DRM_MODE_CONNECTOR_HDMIA	11
+#define DRM_MODE_CONNECTOR_HDMIB	12
+#define DRM_MODE_CONNECTOR_TV		13
+#define DRM_MODE_CONNECTOR_eDP		14
+#define DRM_MODE_CONNECTOR_VIRTUAL      15
+#define DRM_MODE_CONNECTOR_DSI		16
+#define DRM_MODE_CONNECTOR_DPI		17
+#define DRM_MODE_CONNECTOR_WRITEBACK	18
+#define DRM_MODE_CONNECTOR_SPI		19
+#define DRM_MODE_CONNECTOR_USB		20
+
+/**
+ * struct drm_mode_get_connector - Get connector metadata.
+ *
+ * User-space can perform a GETCONNECTOR ioctl to retrieve information about a
+ * connector. User-space is expected to retrieve encoders, modes and properties
+ * by performing this ioctl at least twice: the first time to retrieve the
+ * number of elements, the second time to retrieve the elements themselves.
+ *
+ * To retrieve the number of elements, set @count_props and @count_encoders to
+ * zero, set @count_modes to 1, and set @modes_ptr to a temporary struct
+ * drm_mode_modeinfo element.
+ *
+ * To retrieve the elements, allocate arrays for @encoders_ptr, @modes_ptr,
+ * @props_ptr and @prop_values_ptr, then set @count_modes, @count_props and
+ * @count_encoders to their capacity.
+ *
+ * Performing the ioctl only twice may be racy: the number of elements may have
+ * changed with a hotplug event in-between the two ioctls. User-space is
+ * expected to retry the last ioctl until the number of elements stabilizes.
+ * The kernel won't fill any array which doesn't have the expected length.
+ *
+ * **Force-probing a connector**
+ *
+ * If the @count_modes field is set to zero and the DRM client is the current
+ * DRM master, the kernel will perform a forced probe on the connector to
+ * refresh the connector status, modes and EDID. A forced-probe can be slow,
+ * might cause flickering and the ioctl will block.
+ *
+ * User-space needs to force-probe connectors to ensure their metadata is
+ * up-to-date at startup and after receiving a hot-plug event. User-space
+ * may perform a forced-probe when the user explicitly requests it. User-space
+ * shouldn't perform a forced-probe in other situations.
+ */
+struct drm_mode_get_connector {
+	/** @encoders_ptr: Pointer to ``__u32`` array of object IDs. */
+	__u64 encoders_ptr;
+	/** @modes_ptr: Pointer to struct drm_mode_modeinfo array. */
+	__u64 modes_ptr;
+	/** @props_ptr: Pointer to ``__u32`` array of property IDs. */
+	__u64 props_ptr;
+	/** @prop_values_ptr: Pointer to ``__u64`` array of property values. */
+	__u64 prop_values_ptr;
+
+	/** @count_modes: Number of modes. */
+	__u32 count_modes;
+	/** @count_props: Number of properties. */
+	__u32 count_props;
+	/** @count_encoders: Number of encoders. */
+	__u32 count_encoders;
+
+	/** @encoder_id: Object ID of the current encoder. */
+	__u32 encoder_id;
+	/** @connector_id: Object ID of the connector. */
+	__u32 connector_id;
+	/**
+	 * @connector_type: Type of the connector.
+	 *
+	 * See DRM_MODE_CONNECTOR_* defines.
+	 */
+	__u32 connector_type;
+	/**
+	 * @connector_type_id: Type-specific connector number.
+	 *
+	 * This is not an object ID. This is a per-type connector number. Each
+	 * (type, type_id) combination is unique across all connectors of a DRM
+	 * device.
+	 */
+	__u32 connector_type_id;
+
+	/**
+	 * @connection: Status of the connector.
+	 *
+	 * See enum drm_connector_status.
+	 */
+	__u32 connection;
+	/** @mm_width: Width of the connected sink in millimeters. */
+	__u32 mm_width;
+	/** @mm_height: Height of the connected sink in millimeters. */
+	__u32 mm_height;
+	/**
+	 * @subpixel: Subpixel order of the connected sink.
+	 *
+	 * See enum subpixel_order.
+	 */
+	__u32 subpixel;
+
+	/** @pad: Padding, must be zero. */
+	__u32 pad;
+};
+
+#define DRM_MODE_PROP_PENDING	(1<<0) /* deprecated, do not use */
+#define DRM_MODE_PROP_RANGE	(1<<1)
+#define DRM_MODE_PROP_IMMUTABLE	(1<<2)
+#define DRM_MODE_PROP_ENUM	(1<<3) /* enumerated type with text strings */
+#define DRM_MODE_PROP_BLOB	(1<<4)
+#define DRM_MODE_PROP_BITMASK	(1<<5) /* bitmask of enumerated types */
+
+/* non-extended types: legacy bitmask, one bit per type: */
+#define DRM_MODE_PROP_LEGACY_TYPE  ( \
+		DRM_MODE_PROP_RANGE | \
+		DRM_MODE_PROP_ENUM | \
+		DRM_MODE_PROP_BLOB | \
+		DRM_MODE_PROP_BITMASK)
+
+/* extended-types: rather than continue to consume a bit per type,
+ * grab a chunk of the bits to use as integer type id.
+ */
+#define DRM_MODE_PROP_EXTENDED_TYPE	0x0000ffc0
+#define DRM_MODE_PROP_TYPE(n)		((n) << 6)
+#define DRM_MODE_PROP_OBJECT		DRM_MODE_PROP_TYPE(1)
+#define DRM_MODE_PROP_SIGNED_RANGE	DRM_MODE_PROP_TYPE(2)
+
+/* the PROP_ATOMIC flag is used to hide properties from userspace that
+ * is not aware of atomic properties.  This is mostly to work around
+ * older userspace (DDX drivers) that read/write each prop they find,
+ * witout being aware that this could be triggering a lengthy modeset.
+ */
+#define DRM_MODE_PROP_ATOMIC        0x80000000
+
+/**
+ * struct drm_mode_property_enum - Description for an enum/bitfield entry.
+ * @value: numeric value for this enum entry.
+ * @name: symbolic name for this enum entry.
+ *
+ * See struct drm_property_enum for details.
+ */
+struct drm_mode_property_enum {
+	__u64 value;
+	char name[DRM_PROP_NAME_LEN];
+};
+
+/**
+ * struct drm_mode_get_property - Get property metadata.
+ *
+ * User-space can perform a GETPROPERTY ioctl to retrieve information about a
+ * property. The same property may be attached to multiple objects, see
+ * "Modeset Base Object Abstraction".
+ *
+ * The meaning of the @values_ptr field changes depending on the property type.
+ * See &drm_property.flags for more details.
+ *
+ * The @enum_blob_ptr and @count_enum_blobs fields are only meaningful when the
+ * property has the type &DRM_MODE_PROP_ENUM or &DRM_MODE_PROP_BITMASK. For
+ * backwards compatibility, the kernel will always set @count_enum_blobs to
+ * zero when the property has the type &DRM_MODE_PROP_BLOB. User-space must
+ * ignore these two fields if the property has a different type.
+ *
+ * User-space is expected to retrieve values and enums by performing this ioctl
+ * at least twice: the first time to retrieve the number of elements, the
+ * second time to retrieve the elements themselves.
+ *
+ * To retrieve the number of elements, set @count_values and @count_enum_blobs
+ * to zero, then call the ioctl. @count_values will be updated with the number
+ * of elements. If the property has the type &DRM_MODE_PROP_ENUM or
+ * &DRM_MODE_PROP_BITMASK, @count_enum_blobs will be updated as well.
+ *
+ * To retrieve the elements themselves, allocate an array for @values_ptr and
+ * set @count_values to its capacity. If the property has the type
+ * &DRM_MODE_PROP_ENUM or &DRM_MODE_PROP_BITMASK, allocate an array for
+ * @enum_blob_ptr and set @count_enum_blobs to its capacity. Calling the ioctl
+ * again will fill the arrays.
+ */
+struct drm_mode_get_property {
+	/** @values_ptr: Pointer to a ``__u64`` array. */
+	__u64 values_ptr;
+	/** @enum_blob_ptr: Pointer to a struct drm_mode_property_enum array. */
+	__u64 enum_blob_ptr;
+
+	/**
+	 * @prop_id: Object ID of the property which should be retrieved. Set
+	 * by the caller.
+	 */
+	__u32 prop_id;
+	/**
+	 * @flags: ``DRM_MODE_PROP_*`` bitfield. See &drm_property.flags for
+	 * a definition of the flags.
+	 */
+	__u32 flags;
+	/**
+	 * @name: Symbolic property name. User-space should use this field to
+	 * recognize properties.
+	 */
+	char name[DRM_PROP_NAME_LEN];
+
+	/** @count_values: Number of elements in @values_ptr. */
+	__u32 count_values;
+	/** @count_enum_blobs: Number of elements in @enum_blob_ptr. */
+	__u32 count_enum_blobs;
+};
+
+struct drm_mode_connector_set_property {
+	__u64 value;
+	__u32 prop_id;
+	__u32 connector_id;
+};
+
+#define DRM_MODE_OBJECT_CRTC 0xcccccccc
+#define DRM_MODE_OBJECT_CONNECTOR 0xc0c0c0c0
+#define DRM_MODE_OBJECT_ENCODER 0xe0e0e0e0
+#define DRM_MODE_OBJECT_MODE 0xdededede
+#define DRM_MODE_OBJECT_PROPERTY 0xb0b0b0b0
+#define DRM_MODE_OBJECT_FB 0xfbfbfbfb
+#define DRM_MODE_OBJECT_BLOB 0xbbbbbbbb
+#define DRM_MODE_OBJECT_PLANE 0xeeeeeeee
+#define DRM_MODE_OBJECT_ANY 0
+
+struct drm_mode_obj_get_properties {
+	__u64 props_ptr;
+	__u64 prop_values_ptr;
+	__u32 count_props;
+	__u32 obj_id;
+	__u32 obj_type;
+};
+
+struct drm_mode_obj_set_property {
+	__u64 value;
+	__u32 prop_id;
+	__u32 obj_id;
+	__u32 obj_type;
+};
+
+struct drm_mode_get_blob {
+	__u32 blob_id;
+	__u32 length;
+	__u64 data;
+};
+
+struct drm_mode_fb_cmd {
+	__u32 fb_id;
+	__u32 width;
+	__u32 height;
+	__u32 pitch;
+	__u32 bpp;
+	__u32 depth;
+	/* driver specific handle */
+	__u32 handle;
+};
+
+#define DRM_MODE_FB_INTERLACED	(1<<0) /* for interlaced framebuffers */
+#define DRM_MODE_FB_MODIFIERS	(1<<1) /* enables ->modifer[] */
+
+struct drm_mode_fb_cmd2 {
+	__u32 fb_id;
+	__u32 width;
+	__u32 height;
+	__u32 pixel_format; /* fourcc code from drm_fourcc.h */
+	__u32 flags; /* see above flags */
+
+	/*
+	 * In case of planar formats, this ioctl allows up to 4
+	 * buffer objects with offsets and pitches per plane.
+	 * The pitch and offset order is dictated by the fourcc,
+	 * e.g. NV12 (https://fourcc.org/yuv.php#NV12) is described as:
+	 *
+	 *   YUV 4:2:0 image with a plane of 8 bit Y samples
+	 *   followed by an interleaved U/V plane containing
+	 *   8 bit 2x2 subsampled colour difference samples.
+	 *
+	 * So it would consist of Y as offsets[0] and UV as
+	 * offsets[1].  Note that offsets[0] will generally
+	 * be 0 (but this is not required).
+	 *
+	 * To accommodate tiled, compressed, etc formats, a
+	 * modifier can be specified.  The default value of zero
+	 * indicates "native" format as specified by the fourcc.
+	 * Vendor specific modifier token.  Note that even though
+	 * it looks like we have a modifier per-plane, we in fact
+	 * do not. The modifier for each plane must be identical.
+	 * Thus all combinations of different data layouts for
+	 * multi plane formats must be enumerated as separate
+	 * modifiers.
+	 */
+	__u32 handles[4];
+	__u32 pitches[4]; /* pitch for each plane */
+	__u32 offsets[4]; /* offset of each plane */
+	__u64 modifier[4]; /* ie, tiling, compress */
+};
+
+#define DRM_MODE_FB_DIRTY_ANNOTATE_COPY 0x01
+#define DRM_MODE_FB_DIRTY_ANNOTATE_FILL 0x02
+#define DRM_MODE_FB_DIRTY_FLAGS         0x03
+
+#define DRM_MODE_FB_DIRTY_MAX_CLIPS     256
+
+/*
+ * Mark a region of a framebuffer as dirty.
+ *
+ * Some hardware does not automatically update display contents
+ * as a hardware or software draw to a framebuffer. This ioctl
+ * allows userspace to tell the kernel and the hardware what
+ * regions of the framebuffer have changed.
+ *
+ * The kernel or hardware is free to update more then just the
+ * region specified by the clip rects. The kernel or hardware
+ * may also delay and/or coalesce several calls to dirty into a
+ * single update.
+ *
+ * Userspace may annotate the updates, the annotates are a
+ * promise made by the caller that the change is either a copy
+ * of pixels or a fill of a single color in the region specified.
+ *
+ * If the DRM_MODE_FB_DIRTY_ANNOTATE_COPY flag is given then
+ * the number of updated regions are half of num_clips given,
+ * where the clip rects are paired in src and dst. The width and
+ * height of each one of the pairs must match.
+ *
+ * If the DRM_MODE_FB_DIRTY_ANNOTATE_FILL flag is given the caller
+ * promises that the region specified of the clip rects is filled
+ * completely with a single color as given in the color argument.
+ */
+
+struct drm_mode_fb_dirty_cmd {
+	__u32 fb_id;
+	__u32 flags;
+	__u32 color;
+	__u32 num_clips;
+	__u64 clips_ptr;
+};
+
+struct drm_mode_mode_cmd {
+	__u32 connector_id;
+	struct drm_mode_modeinfo mode;
+};
+
+#define DRM_MODE_CURSOR_BO	0x01
+#define DRM_MODE_CURSOR_MOVE	0x02
+#define DRM_MODE_CURSOR_FLAGS	0x03
+
+/*
+ * depending on the value in flags different members are used.
+ *
+ * CURSOR_BO uses
+ *    crtc_id
+ *    width
+ *    height
+ *    handle - if 0 turns the cursor off
+ *
+ * CURSOR_MOVE uses
+ *    crtc_id
+ *    x
+ *    y
+ */
+struct drm_mode_cursor {
+	__u32 flags;
+	__u32 crtc_id;
+	__s32 x;
+	__s32 y;
+	__u32 width;
+	__u32 height;
+	/* driver specific handle */
+	__u32 handle;
+};
+
+struct drm_mode_cursor2 {
+	__u32 flags;
+	__u32 crtc_id;
+	__s32 x;
+	__s32 y;
+	__u32 width;
+	__u32 height;
+	/* driver specific handle */
+	__u32 handle;
+	__s32 hot_x;
+	__s32 hot_y;
+};
+
+struct drm_mode_crtc_lut {
+	__u32 crtc_id;
+	__u32 gamma_size;
+
+	/* pointers to arrays */
+	__u64 red;
+	__u64 green;
+	__u64 blue;
+};
+
+struct drm_color_ctm {
+	/*
+	 * Conversion matrix in S31.32 sign-magnitude
+	 * (not two's complement!) format.
+	 */
+	__u64 matrix[9];
+};
+
+struct drm_color_lut {
+	/*
+	 * Values are mapped linearly to 0.0 - 1.0 range, with 0x0 == 0.0 and
+	 * 0xffff == 1.0.
+	 */
+	__u16 red;
+	__u16 green;
+	__u16 blue;
+	__u16 reserved;
+};
+
+/**
+ * struct hdr_metadata_infoframe - HDR Metadata Infoframe Data.
+ *
+ * HDR Metadata Infoframe as per CTA 861.G spec. This is expected
+ * to match exactly with the spec.
+ *
+ * Userspace is expected to pass the metadata information as per
+ * the format described in this structure.
+ */
+struct hdr_metadata_infoframe {
+	/**
+	 * @eotf: Electro-Optical Transfer Function (EOTF)
+	 * used in the stream.
+	 */
+	__u8 eotf;
+	/**
+	 * @metadata_type: Static_Metadata_Descriptor_ID.
+	 */
+	__u8 metadata_type;
+	/**
+	 * @display_primaries: Color Primaries of the Data.
+	 * These are coded as unsigned 16-bit values in units of
+	 * 0.00002, where 0x0000 represents zero and 0xC350
+	 * represents 1.0000.
+	 * @display_primaries.x: X cordinate of color primary.
+	 * @display_primaries.y: Y cordinate of color primary.
+	 */
+	struct {
+		__u16 x, y;
+		} display_primaries[3];
+	/**
+	 * @white_point: White Point of Colorspace Data.
+	 * These are coded as unsigned 16-bit values in units of
+	 * 0.00002, where 0x0000 represents zero and 0xC350
+	 * represents 1.0000.
+	 * @white_point.x: X cordinate of whitepoint of color primary.
+	 * @white_point.y: Y cordinate of whitepoint of color primary.
+	 */
+	struct {
+		__u16 x, y;
+		} white_point;
+	/**
+	 * @max_display_mastering_luminance: Max Mastering Display Luminance.
+	 * This value is coded as an unsigned 16-bit value in units of 1 cd/m2,
+	 * where 0x0001 represents 1 cd/m2 and 0xFFFF represents 65535 cd/m2.
+	 */
+	__u16 max_display_mastering_luminance;
+	/**
+	 * @min_display_mastering_luminance: Min Mastering Display Luminance.
+	 * This value is coded as an unsigned 16-bit value in units of
+	 * 0.0001 cd/m2, where 0x0001 represents 0.0001 cd/m2 and 0xFFFF
+	 * represents 6.5535 cd/m2.
+	 */
+	__u16 min_display_mastering_luminance;
+	/**
+	 * @max_cll: Max Content Light Level.
+	 * This value is coded as an unsigned 16-bit value in units of 1 cd/m2,
+	 * where 0x0001 represents 1 cd/m2 and 0xFFFF represents 65535 cd/m2.
+	 */
+	__u16 max_cll;
+	/**
+	 * @max_fall: Max Frame Average Light Level.
+	 * This value is coded as an unsigned 16-bit value in units of 1 cd/m2,
+	 * where 0x0001 represents 1 cd/m2 and 0xFFFF represents 65535 cd/m2.
+	 */
+	__u16 max_fall;
+};
+
+/**
+ * struct hdr_output_metadata - HDR output metadata
+ *
+ * Metadata Information to be passed from userspace
+ */
+struct hdr_output_metadata {
+	/**
+	 * @metadata_type: Static_Metadata_Descriptor_ID.
+	 */
+	__u32 metadata_type;
+	/**
+	 * @hdmi_metadata_type1: HDR Metadata Infoframe.
+	 */
+	union {
+		struct hdr_metadata_infoframe hdmi_metadata_type1;
+	};
+};
+
+#define DRM_MODE_PAGE_FLIP_EVENT 0x01
+#define DRM_MODE_PAGE_FLIP_ASYNC 0x02
+#define DRM_MODE_PAGE_FLIP_TARGET_ABSOLUTE 0x4
+#define DRM_MODE_PAGE_FLIP_TARGET_RELATIVE 0x8
+#define DRM_MODE_PAGE_FLIP_TARGET (DRM_MODE_PAGE_FLIP_TARGET_ABSOLUTE | \
+				   DRM_MODE_PAGE_FLIP_TARGET_RELATIVE)
+#define DRM_MODE_PAGE_FLIP_FLAGS (DRM_MODE_PAGE_FLIP_EVENT | \
+				  DRM_MODE_PAGE_FLIP_ASYNC | \
+				  DRM_MODE_PAGE_FLIP_TARGET)
+
+/*
+ * Request a page flip on the specified crtc.
+ *
+ * This ioctl will ask KMS to schedule a page flip for the specified
+ * crtc.  Once any pending rendering targeting the specified fb (as of
+ * ioctl time) has completed, the crtc will be reprogrammed to display
+ * that fb after the next vertical refresh.  The ioctl returns
+ * immediately, but subsequent rendering to the current fb will block
+ * in the execbuffer ioctl until the page flip happens.  If a page
+ * flip is already pending as the ioctl is called, EBUSY will be
+ * returned.
+ *
+ * Flag DRM_MODE_PAGE_FLIP_EVENT requests that drm sends back a vblank
+ * event (see drm.h: struct drm_event_vblank) when the page flip is
+ * done.  The user_data field passed in with this ioctl will be
+ * returned as the user_data field in the vblank event struct.
+ *
+ * Flag DRM_MODE_PAGE_FLIP_ASYNC requests that the flip happen
+ * 'as soon as possible', meaning that it not delay waiting for vblank.
+ * This may cause tearing on the screen.
+ *
+ * The reserved field must be zero.
+ */
+
+struct drm_mode_crtc_page_flip {
+	__u32 crtc_id;
+	__u32 fb_id;
+	__u32 flags;
+	__u32 reserved;
+	__u64 user_data;
+};
+
+/*
+ * Request a page flip on the specified crtc.
+ *
+ * Same as struct drm_mode_crtc_page_flip, but supports new flags and
+ * re-purposes the reserved field:
+ *
+ * The sequence field must be zero unless either of the
+ * DRM_MODE_PAGE_FLIP_TARGET_ABSOLUTE/RELATIVE flags is specified. When
+ * the ABSOLUTE flag is specified, the sequence field denotes the absolute
+ * vblank sequence when the flip should take effect. When the RELATIVE
+ * flag is specified, the sequence field denotes the relative (to the
+ * current one when the ioctl is called) vblank sequence when the flip
+ * should take effect. NOTE: DRM_IOCTL_WAIT_VBLANK must still be used to
+ * make sure the vblank sequence before the target one has passed before
+ * calling this ioctl. The purpose of the
+ * DRM_MODE_PAGE_FLIP_TARGET_ABSOLUTE/RELATIVE flags is merely to clarify
+ * the target for when code dealing with a page flip runs during a
+ * vertical blank period.
+ */
+
+struct drm_mode_crtc_page_flip_target {
+	__u32 crtc_id;
+	__u32 fb_id;
+	__u32 flags;
+	__u32 sequence;
+	__u64 user_data;
+};
+
+/* create a dumb scanout buffer */
+struct drm_mode_create_dumb {
+	__u32 height;
+	__u32 width;
+	__u32 bpp;
+	__u32 flags;
+	/* handle, pitch, size will be returned */
+	__u32 handle;
+	__u32 pitch;
+	__u64 size;
+};
+
+/* set up for mmap of a dumb scanout buffer */
+struct drm_mode_map_dumb {
+	/** Handle for the object being mapped. */
+	__u32 handle;
+	__u32 pad;
+	/**
+	 * Fake offset to use for subsequent mmap call
+	 *
+	 * This is a fixed-size type for 32/64 compatibility.
+	 */
+	__u64 offset;
+};
+
+struct drm_mode_destroy_dumb {
+	__u32 handle;
+};
+
+/* page-flip flags are valid, plus: */
+#define DRM_MODE_ATOMIC_TEST_ONLY 0x0100
+#define DRM_MODE_ATOMIC_NONBLOCK  0x0200
+#define DRM_MODE_ATOMIC_ALLOW_MODESET 0x0400
+
+#define DRM_MODE_ATOMIC_FLAGS (\
+		DRM_MODE_PAGE_FLIP_EVENT |\
+		DRM_MODE_PAGE_FLIP_ASYNC |\
+		DRM_MODE_ATOMIC_TEST_ONLY |\
+		DRM_MODE_ATOMIC_NONBLOCK |\
+		DRM_MODE_ATOMIC_ALLOW_MODESET)
+
+struct drm_mode_atomic {
+	__u32 flags;
+	__u32 count_objs;
+	__u64 objs_ptr;
+	__u64 count_props_ptr;
+	__u64 props_ptr;
+	__u64 prop_values_ptr;
+	__u64 reserved;
+	__u64 user_data;
+};
+
+struct drm_format_modifier_blob {
+#define FORMAT_BLOB_CURRENT 1
+	/* Version of this blob format */
+	__u32 version;
+
+	/* Flags */
+	__u32 flags;
+
+	/* Number of fourcc formats supported */
+	__u32 count_formats;
+
+	/* Where in this blob the formats exist (in bytes) */
+	__u32 formats_offset;
+
+	/* Number of drm_format_modifiers */
+	__u32 count_modifiers;
+
+	/* Where in this blob the modifiers exist (in bytes) */
+	__u32 modifiers_offset;
+
+	/* __u32 formats[] */
+	/* struct drm_format_modifier modifiers[] */
+};
+
+struct drm_format_modifier {
+	/* Bitmask of formats in get_plane format list this info applies to. The
+	 * offset allows a sliding window of which 64 formats (bits).
+	 *
+	 * Some examples:
+	 * In today's world with < 65 formats, and formats 0, and 2 are
+	 * supported
+	 * 0x0000000000000005
+	 *		  ^-offset = 0, formats = 5
+	 *
+	 * If the number formats grew to 128, and formats 98-102 are
+	 * supported with the modifier:
+	 *
+	 * 0x0000007c00000000 0000000000000000
+	 *		  ^
+	 *		  |__offset = 64, formats = 0x7c00000000
+	 *
+	 */
+	__u64 formats;
+	__u32 offset;
+	__u32 pad;
+
+	/* The modifier that applies to the >get_plane format list bitmask. */
+	__u64 modifier;
+};
+
+/**
+ * struct drm_mode_create_blob - Create New blob property
+ *
+ * Create a new 'blob' data property, copying length bytes from data pointer,
+ * and returning new blob ID.
+ */
+struct drm_mode_create_blob {
+	/** @data: Pointer to data to copy. */
+	__u64 data;
+	/** @length: Length of data to copy. */
+	__u32 length;
+	/** @blob_id: Return: new property ID. */
+	__u32 blob_id;
+};
+
+/**
+ * struct drm_mode_destroy_blob - Destroy user blob
+ * @blob_id: blob_id to destroy
+ *
+ * Destroy a user-created blob property.
+ *
+ * User-space can release blobs as soon as they do not need to refer to them by
+ * their blob object ID.  For instance, if you are using a MODE_ID blob in an
+ * atomic commit and you will not make another commit re-using the same ID, you
+ * can destroy the blob as soon as the commit has been issued, without waiting
+ * for it to complete.
+ */
+struct drm_mode_destroy_blob {
+	__u32 blob_id;
+};
+
+/**
+ * struct drm_mode_create_lease - Create lease
+ *
+ * Lease mode resources, creating another drm_master.
+ *
+ * The @object_ids array must reference at least one CRTC, one connector and
+ * one plane if &DRM_CLIENT_CAP_UNIVERSAL_PLANES is enabled. Alternatively,
+ * the lease can be completely empty.
+ */
+struct drm_mode_create_lease {
+	/** @object_ids: Pointer to array of object ids (__u32) */
+	__u64 object_ids;
+	/** @object_count: Number of object ids */
+	__u32 object_count;
+	/** @flags: flags for new FD (O_CLOEXEC, etc) */
+	__u32 flags;
+
+	/** @lessee_id: Return: unique identifier for lessee. */
+	__u32 lessee_id;
+	/** @fd: Return: file descriptor to new drm_master file */
+	__u32 fd;
+};
+
+/**
+ * struct drm_mode_list_lessees - List lessees
+ *
+ * List lesses from a drm_master.
+ */
+struct drm_mode_list_lessees {
+	/**
+	 * @count_lessees: Number of lessees.
+	 *
+	 * On input, provides length of the array.
+	 * On output, provides total number. No
+	 * more than the input number will be written
+	 * back, so two calls can be used to get
+	 * the size and then the data.
+	 */
+	__u32 count_lessees;
+	/** @pad: Padding. */
+	__u32 pad;
+
+	/**
+	 * @lessees_ptr: Pointer to lessees.
+	 *
+	 * Pointer to __u64 array of lessee ids
+	 */
+	__u64 lessees_ptr;
+};
+
+/**
+ * struct drm_mode_get_lease - Get Lease
+ *
+ * Get leased objects.
+ */
+struct drm_mode_get_lease {
+	/**
+	 * @count_objects: Number of leased objects.
+	 *
+	 * On input, provides length of the array.
+	 * On output, provides total number. No
+	 * more than the input number will be written
+	 * back, so two calls can be used to get
+	 * the size and then the data.
+	 */
+	__u32 count_objects;
+	/** @pad: Padding. */
+	__u32 pad;
+
+	/**
+	 * @objects_ptr: Pointer to objects.
+	 *
+	 * Pointer to __u32 array of object ids.
+	 */
+	__u64 objects_ptr;
+};
+
+/**
+ * struct drm_mode_revoke_lease - Revoke lease
+ */
+struct drm_mode_revoke_lease {
+	/** @lessee_id: Unique ID of lessee */
+	__u32 lessee_id;
+};
+
+/**
+ * struct drm_mode_rect - Two dimensional rectangle.
+ * @x1: Horizontal starting coordinate (inclusive).
+ * @y1: Vertical starting coordinate (inclusive).
+ * @x2: Horizontal ending coordinate (exclusive).
+ * @y2: Vertical ending coordinate (exclusive).
+ *
+ * With drm subsystem using struct drm_rect to manage rectangular area this
+ * export it to user-space.
+ *
+ * Currently used by drm_mode_atomic blob property FB_DAMAGE_CLIPS.
+ */
+struct drm_mode_rect {
+	__s32 x1;
+	__s32 y1;
+	__s32 x2;
+	__s32 y2;
+};
+
+#if defined(__cplusplus)
+}
+#endif
+
+#endif
diff --git a/third_party/drm/drm/xf86drm.h b/third_party/drm/drm/xf86drm.h
new file mode 100644
index 0000000..58d66f1
--- /dev/null
+++ b/third_party/drm/drm/xf86drm.h
@@ -0,0 +1,966 @@
+/**
+ * \file xf86drm.h 
+ * OS-independent header for DRM user-level library interface.
+ *
+ * \author Rickard E. (Rik) Faith <faith@valinux.com>
+ */
+ 
+/*
+ * Copyright 1999, 2000 Precision Insight, Inc., Cedar Park, Texas.
+ * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+
+#ifndef _XF86DRM_H_
+#define _XF86DRM_H_
+
+#include <stdarg.h>
+#include <sys/types.h>
+#include <stdint.h>
+#include <drm/drm.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+#ifndef DRM_MAX_MINOR
+#define DRM_MAX_MINOR   16
+#endif
+
+#if defined(__linux__)
+
+#define DRM_IOCTL_NR(n)		_IOC_NR(n)
+#define DRM_IOC_VOID		_IOC_NONE
+#define DRM_IOC_READ		_IOC_READ
+#define DRM_IOC_WRITE		_IOC_WRITE
+#define DRM_IOC_READWRITE	_IOC_READ|_IOC_WRITE
+#define DRM_IOC(dir, group, nr, size) _IOC(dir, group, nr, size)
+
+#else /* One of the *BSDs */
+
+#include <sys/ioccom.h>
+#define DRM_IOCTL_NR(n)         ((n) & 0xff)
+#define DRM_IOC_VOID            IOC_VOID
+#define DRM_IOC_READ            IOC_OUT
+#define DRM_IOC_WRITE           IOC_IN
+#define DRM_IOC_READWRITE       IOC_INOUT
+#define DRM_IOC(dir, group, nr, size) _IOC(dir, group, nr, size)
+
+#endif
+
+				/* Defaults, if nothing set in xf86config */
+#define DRM_DEV_UID	 0
+#define DRM_DEV_GID	 0
+/* Default /dev/dri directory permissions 0755 */
+#define DRM_DEV_DIRMODE	 	\
+	(S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH)
+#define DRM_DEV_MODE	 (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH)
+
+#ifdef __OpenBSD__
+#define DRM_DIR_NAME  "/dev"
+#define DRM_PRIMARY_MINOR_NAME  "drm"
+#define DRM_CONTROL_MINOR_NAME  "drmC"
+#define DRM_RENDER_MINOR_NAME   "drmR"
+#else
+#define DRM_DIR_NAME  "/dev/dri"
+#define DRM_PRIMARY_MINOR_NAME  "card"
+#define DRM_CONTROL_MINOR_NAME  "controlD"
+#define DRM_RENDER_MINOR_NAME   "renderD"
+#define DRM_PROC_NAME "/proc/dri/" /* For backward Linux compatibility */
+#endif
+
+#define DRM_DEV_NAME          "%s/" DRM_PRIMARY_MINOR_NAME "%d"
+#define DRM_CONTROL_DEV_NAME  "%s/" DRM_CONTROL_MINOR_NAME "%d"
+#define DRM_RENDER_DEV_NAME   "%s/" DRM_RENDER_MINOR_NAME  "%d"
+
+#define DRM_NODE_NAME_MAX \
+    (sizeof(DRM_DIR_NAME) + 1 /* slash */ \
+     + MAX3(sizeof(DRM_PRIMARY_MINOR_NAME), \
+            sizeof(DRM_CONTROL_MINOR_NAME), \
+            sizeof(DRM_RENDER_MINOR_NAME)) \
+     + sizeof("144") /* highest possible node number */ \
+     + 1) /* NULL-terminator */
+
+#define DRM_ERR_NO_DEVICE  (-1001)
+#define DRM_ERR_NO_ACCESS  (-1002)
+#define DRM_ERR_NOT_ROOT   (-1003)
+#define DRM_ERR_INVALID    (-1004)
+#define DRM_ERR_NO_FD      (-1005)
+
+#define DRM_AGP_NO_HANDLE 0
+
+typedef unsigned int  drmSize,     *drmSizePtr;	    /**< For mapped regions */
+typedef void          *drmAddress, **drmAddressPtr; /**< For mapped regions */
+
+#if (__GNUC__ >= 3)
+#define DRM_PRINTFLIKE(f, a) __attribute__ ((format(__printf__, f, a)))
+#else
+#define DRM_PRINTFLIKE(f, a)
+#endif
+
+typedef struct _drmServerInfo {
+  int (*debug_print)(const char *format, va_list ap) DRM_PRINTFLIKE(1,0);
+  int (*load_module)(const char *name);
+  void (*get_perms)(gid_t *, mode_t *);
+} drmServerInfo, *drmServerInfoPtr;
+
+typedef struct drmHashEntry {
+    int      fd;
+    void     (*f)(int, void *, void *);
+    void     *tagTable;
+} drmHashEntry;
+
+extern int drmIoctl(int fd, unsigned long request, void *arg);
+extern void *drmGetHashTable(void);
+extern drmHashEntry *drmGetEntry(int fd);
+
+/**
+ * Driver version information.
+ *
+ * \sa drmGetVersion() and drmSetVersion().
+ */
+typedef struct _drmVersion {
+    int     version_major;        /**< Major version */
+    int     version_minor;        /**< Minor version */
+    int     version_patchlevel;   /**< Patch level */
+    int     name_len; 	          /**< Length of name buffer */
+    char    *name;	          /**< Name of driver */
+    int     date_len;             /**< Length of date buffer */
+    char    *date;                /**< User-space buffer to hold date */
+    int     desc_len;	          /**< Length of desc buffer */
+    char    *desc;                /**< User-space buffer to hold desc */
+} drmVersion, *drmVersionPtr;
+
+typedef struct _drmStats {
+    unsigned long count;	     /**< Number of data */
+    struct {
+	unsigned long value;	     /**< Value from kernel */
+	const char    *long_format;  /**< Suggested format for long_name */
+	const char    *long_name;    /**< Long name for value */
+	const char    *rate_format;  /**< Suggested format for rate_name */
+	const char    *rate_name;    /**< Short name for value per second */
+	int           isvalue;       /**< True if value (vs. counter) */
+	const char    *mult_names;   /**< Multiplier names (e.g., "KGM") */
+	int           mult;          /**< Multiplier value (e.g., 1024) */
+	int           verbose;       /**< Suggest only in verbose output */
+    } data[15];
+} drmStatsT;
+
+
+				/* All of these enums *MUST* match with the
+                                   kernel implementation -- so do *NOT*
+                                   change them!  (The drmlib implementation
+                                   will just copy the flags instead of
+                                   translating them.) */
+typedef enum {
+    DRM_FRAME_BUFFER    = 0,      /**< WC, no caching, no core dump */
+    DRM_REGISTERS       = 1,      /**< no caching, no core dump */
+    DRM_SHM             = 2,      /**< shared, cached */
+    DRM_AGP             = 3,	  /**< AGP/GART */
+    DRM_SCATTER_GATHER  = 4,	  /**< PCI scatter/gather */
+    DRM_CONSISTENT      = 5	  /**< PCI consistent */
+} drmMapType;
+
+typedef enum {
+    DRM_RESTRICTED      = 0x0001, /**< Cannot be mapped to client-virtual */
+    DRM_READ_ONLY       = 0x0002, /**< Read-only in client-virtual */
+    DRM_LOCKED          = 0x0004, /**< Physical pages locked */
+    DRM_KERNEL          = 0x0008, /**< Kernel requires access */
+    DRM_WRITE_COMBINING = 0x0010, /**< Use write-combining, if available */
+    DRM_CONTAINS_LOCK   = 0x0020, /**< SHM page that contains lock */
+    DRM_REMOVABLE	= 0x0040  /**< Removable mapping */
+} drmMapFlags;
+
+/**
+ * \warning These values *MUST* match drm.h
+ */
+typedef enum {
+    /** \name Flags for DMA buffer dispatch */
+    /*@{*/
+    DRM_DMA_BLOCK        = 0x01, /**< 
+				  * Block until buffer dispatched.
+				  * 
+				  * \note the buffer may not yet have been
+				  * processed by the hardware -- getting a
+				  * hardware lock with the hardware quiescent
+				  * will ensure that the buffer has been
+				  * processed.
+				  */
+    DRM_DMA_WHILE_LOCKED = 0x02, /**< Dispatch while lock held */
+    DRM_DMA_PRIORITY     = 0x04, /**< High priority dispatch */
+    /*@}*/
+
+    /** \name Flags for DMA buffer request */
+    /*@{*/
+    DRM_DMA_WAIT         = 0x10, /**< Wait for free buffers */
+    DRM_DMA_SMALLER_OK   = 0x20, /**< Smaller-than-requested buffers OK */
+    DRM_DMA_LARGER_OK    = 0x40  /**< Larger-than-requested buffers OK */
+    /*@}*/
+} drmDMAFlags;
+
+typedef enum {
+    DRM_PAGE_ALIGN       = 0x01,
+    DRM_AGP_BUFFER       = 0x02,
+    DRM_SG_BUFFER        = 0x04,
+    DRM_FB_BUFFER        = 0x08,
+    DRM_PCI_BUFFER_RO    = 0x10
+} drmBufDescFlags;
+
+typedef enum {
+    DRM_LOCK_READY      = 0x01, /**< Wait until hardware is ready for DMA */
+    DRM_LOCK_QUIESCENT  = 0x02, /**< Wait until hardware quiescent */
+    DRM_LOCK_FLUSH      = 0x04, /**< Flush this context's DMA queue first */
+    DRM_LOCK_FLUSH_ALL  = 0x08, /**< Flush all DMA queues first */
+				/* These *HALT* flags aren't supported yet
+                                   -- they will be used to support the
+                                   full-screen DGA-like mode. */
+    DRM_HALT_ALL_QUEUES = 0x10, /**< Halt all current and future queues */
+    DRM_HALT_CUR_QUEUES = 0x20  /**< Halt all current queues */
+} drmLockFlags;
+
+typedef enum {
+    DRM_CONTEXT_PRESERVED = 0x01, /**< This context is preserved and
+				     never swapped. */
+    DRM_CONTEXT_2DONLY    = 0x02  /**< This context is for 2D rendering only. */
+} drm_context_tFlags, *drm_context_tFlagsPtr;
+
+typedef struct _drmBufDesc {
+    int              count;	  /**< Number of buffers of this size */
+    int              size;	  /**< Size in bytes */
+    int              low_mark;	  /**< Low water mark */
+    int              high_mark;	  /**< High water mark */
+} drmBufDesc, *drmBufDescPtr;
+
+typedef struct _drmBufInfo {
+    int              count;	  /**< Number of buffers described in list */
+    drmBufDescPtr    list;	  /**< List of buffer descriptions */
+} drmBufInfo, *drmBufInfoPtr;
+
+typedef struct _drmBuf {
+    int              idx;	  /**< Index into the master buffer list */
+    int              total;	  /**< Buffer size */
+    int              used;	  /**< Amount of buffer in use (for DMA) */
+    drmAddress       address;	  /**< Address */
+} drmBuf, *drmBufPtr;
+
+/**
+ * Buffer mapping information.
+ *
+ * Used by drmMapBufs() and drmUnmapBufs() to store information about the
+ * mapped buffers.
+ */
+typedef struct _drmBufMap {
+    int              count;	  /**< Number of buffers mapped */
+    drmBufPtr        list;	  /**< Buffers */
+} drmBufMap, *drmBufMapPtr;
+
+typedef struct _drmLock {
+    volatile unsigned int lock;
+    char                      padding[60];
+    /* This is big enough for most current (and future?) architectures:
+       DEC Alpha:              32 bytes
+       Intel Merced:           ?
+       Intel P5/PPro/PII/PIII: 32 bytes
+       Intel StrongARM:        32 bytes
+       Intel i386/i486:        16 bytes
+       MIPS:                   32 bytes (?)
+       Motorola 68k:           16 bytes
+       Motorola PowerPC:       32 bytes
+       Sun SPARC:              32 bytes
+    */
+} drmLock, *drmLockPtr;
+
+/**
+ * Indices here refer to the offset into
+ * list in drmBufInfo
+ */
+typedef struct _drmDMAReq {
+    drm_context_t    context;  	  /**< Context handle */
+    int           send_count;     /**< Number of buffers to send */
+    int           *send_list;     /**< List of handles to buffers */
+    int           *send_sizes;    /**< Lengths of data to send, in bytes */
+    drmDMAFlags   flags;          /**< Flags */
+    int           request_count;  /**< Number of buffers requested */
+    int           request_size;	  /**< Desired size of buffers requested */
+    int           *request_list;  /**< Buffer information */
+    int           *request_sizes; /**< Minimum acceptable sizes */
+    int           granted_count;  /**< Number of buffers granted at this size */
+} drmDMAReq, *drmDMAReqPtr;
+
+typedef struct _drmRegion {
+    drm_handle_t     handle;
+    unsigned int  offset;
+    drmSize       size;
+    drmAddress    map;
+} drmRegion, *drmRegionPtr;
+
+typedef struct _drmTextureRegion {
+    unsigned char next;
+    unsigned char prev;
+    unsigned char in_use;
+    unsigned char padding;	/**< Explicitly pad this out */
+    unsigned int  age;
+} drmTextureRegion, *drmTextureRegionPtr;
+
+
+typedef enum {
+    DRM_VBLANK_ABSOLUTE = 0x0,	/**< Wait for specific vblank sequence number */
+    DRM_VBLANK_RELATIVE = 0x1,	/**< Wait for given number of vblanks */
+    /* bits 1-6 are reserved for high crtcs */
+    DRM_VBLANK_HIGH_CRTC_MASK = 0x0000003e,
+    DRM_VBLANK_EVENT = 0x4000000,	/**< Send event instead of blocking */
+    DRM_VBLANK_FLIP = 0x8000000,	/**< Scheduled buffer swap should flip */
+    DRM_VBLANK_NEXTONMISS = 0x10000000,	/**< If missed, wait for next vblank */
+    DRM_VBLANK_SECONDARY = 0x20000000,	/**< Secondary display controller */
+    DRM_VBLANK_SIGNAL   = 0x40000000	/* Send signal instead of blocking */
+} drmVBlankSeqType;
+#define DRM_VBLANK_HIGH_CRTC_SHIFT 1
+
+typedef struct _drmVBlankReq {
+	drmVBlankSeqType type;
+	unsigned int sequence;
+	unsigned long signal;
+} drmVBlankReq, *drmVBlankReqPtr;
+
+typedef struct _drmVBlankReply {
+	drmVBlankSeqType type;
+	unsigned int sequence;
+	long tval_sec;
+	long tval_usec;
+} drmVBlankReply, *drmVBlankReplyPtr;
+
+typedef union _drmVBlank {
+	drmVBlankReq request;
+	drmVBlankReply reply;
+} drmVBlank, *drmVBlankPtr;
+
+typedef struct _drmSetVersion {
+	int drm_di_major;
+	int drm_di_minor;
+	int drm_dd_major;
+	int drm_dd_minor;
+} drmSetVersion, *drmSetVersionPtr;
+
+#define __drm_dummy_lock(lock) (*(__volatile__ unsigned int *)lock)
+
+#define DRM_LOCK_HELD  0x80000000U /**< Hardware lock is held */
+#define DRM_LOCK_CONT  0x40000000U /**< Hardware lock is contended */
+
+#if defined(__GNUC__) && (__GNUC__ >= 2)
+# if defined(__i386) || defined(__AMD64__) || defined(__x86_64__) || defined(__amd64__)
+				/* Reflect changes here to drmP.h */
+#define DRM_CAS(lock,old,new,__ret)                                    \
+	do {                                                           \
+                int __dummy;	/* Can't mark eax as clobbered */      \
+		__asm__ __volatile__(                                  \
+			"lock ; cmpxchg %4,%1\n\t"                     \
+                        "setnz %0"                                     \
+			: "=d" (__ret),                                \
+   			  "=m" (__drm_dummy_lock(lock)),               \
+                          "=a" (__dummy)                               \
+			: "2" (old),                                   \
+			  "r" (new));                                  \
+	} while (0)
+
+#elif defined(__alpha__)
+
+#define	DRM_CAS(lock, old, new, ret)		\
+	do {					\
+		int tmp, old32;			\
+		__asm__ __volatile__(		\
+		"	addl	$31, %5, %3\n"	\
+		"1:	ldl_l	%0, %2\n"	\
+		"	cmpeq	%0, %3, %1\n"	\
+		"	beq	%1, 2f\n"	\
+		"	mov	%4, %0\n"	\
+		"	stl_c	%0, %2\n"	\
+		"	beq	%0, 3f\n"	\
+		"	mb\n"			\
+		"2:	cmpeq	%1, 0, %1\n"	\
+		".subsection 2\n"		\
+		"3:	br	1b\n"		\
+		".previous"			\
+		: "=&r"(tmp), "=&r"(ret),	\
+		  "=m"(__drm_dummy_lock(lock)),	\
+		  "=&r"(old32)			\
+		: "r"(new), "r"(old)		\
+		: "memory");			\
+	} while (0)
+
+#elif defined(__sparc__)
+
+#define DRM_CAS(lock,old,new,__ret)				\
+do {	register unsigned int __old __asm("o0");		\
+	register unsigned int __new __asm("o1");		\
+	register volatile unsigned int *__lock __asm("o2");	\
+	__old = old;						\
+	__new = new;						\
+	__lock = (volatile unsigned int *)lock;			\
+	__asm__ __volatile__(					\
+		/*"cas [%2], %3, %0"*/				\
+		".word 0xd3e29008\n\t"				\
+		/*"membar #StoreStore | #StoreLoad"*/		\
+		".word 0x8143e00a"				\
+		: "=&r" (__new)					\
+		: "0" (__new),					\
+		  "r" (__lock),					\
+		  "r" (__old)					\
+		: "memory");					\
+	__ret = (__new != __old);				\
+} while(0)
+
+#elif defined(__ia64__)
+
+#ifdef __INTEL_COMPILER
+/* this currently generates bad code (missing stop bits)... */
+#include <ia64intrin.h>
+
+#define DRM_CAS(lock,old,new,__ret)					      \
+	do {								      \
+		unsigned long __result, __old = (old) & 0xffffffff;		\
+		__mf();							      	\
+		__result = _InterlockedCompareExchange_acq(&__drm_dummy_lock(lock), (new), __old);\
+		__ret = (__result) != (__old);					\
+/*		__ret = (__sync_val_compare_and_swap(&__drm_dummy_lock(lock), \
+						     (old), (new))	      \
+			 != (old));					      */\
+	} while (0)
+
+#else
+#define DRM_CAS(lock,old,new,__ret)					  \
+	do {								  \
+		unsigned int __result, __old = (old);			  \
+		__asm__ __volatile__(					  \
+			"mf\n"						  \
+			"mov ar.ccv=%2\n"				  \
+			";;\n"						  \
+			"cmpxchg4.acq %0=%1,%3,ar.ccv"			  \
+			: "=r" (__result), "=m" (__drm_dummy_lock(lock))  \
+			: "r" ((unsigned long)__old), "r" (new)			  \
+			: "memory");					  \
+		__ret = (__result) != (__old);				  \
+	} while (0)
+
+#endif
+
+#elif defined(__powerpc__)
+
+#define DRM_CAS(lock,old,new,__ret)			\
+	do {						\
+		__asm__ __volatile__(			\
+			"sync;"				\
+			"0:    lwarx %0,0,%1;"		\
+			"      xor. %0,%3,%0;"		\
+			"      bne 1f;"			\
+			"      stwcx. %2,0,%1;"		\
+			"      bne- 0b;"		\
+			"1:    "			\
+			"sync;"				\
+		: "=&r"(__ret)				\
+		: "r"(lock), "r"(new), "r"(old)		\
+		: "cr0", "memory");			\
+	} while (0)
+
+# elif defined (__ARM_ARCH_6__) || defined(__ARM_ARCH_6J__) \
+	|| defined (__ARM_ARCH_6Z__) || defined(__ARM_ARCH_6ZK__) \
+	|| defined (__ARM_ARCH_6K__) || defined(__ARM_ARCH_6T2__) \
+	|| defined (__ARM_ARCH_7__) || defined(__ARM_ARCH_7A__) \
+	|| defined(__ARM_ARCH_7R__) || defined(__ARM_ARCH_7M__) \
+	|| defined(__ARM_ARCH_7EM__)
+       /* excluding ARMv4/ARMv5 and lower (lacking ldrex/strex support) */
+       #undef DRM_DEV_MODE
+       #define DRM_DEV_MODE     (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH)
+
+       #define DRM_CAS(lock,old,new,__ret)             \
+       do {                                            \
+               __asm__ __volatile__ (                  \
+                       "1: ldrex %0, [%1]\n"           \
+                       "   teq %0, %2\n"               \
+                       "   ite eq\n"                   \
+                       "   strexeq %0, %3, [%1]\n"     \
+                       "   movne   %0, #1\n"           \
+               : "=&r" (__ret)                         \
+               : "r" (lock), "r" (old), "r" (new)      \
+               : "cc","memory");                       \
+       } while (0)
+
+#endif /* architecture */
+#endif /* __GNUC__ >= 2 */
+
+#ifndef DRM_CAS
+#define DRM_CAS(lock,old,new,ret) do { ret=1; } while (0) /* FAST LOCK FAILS */
+#endif
+
+#if defined(__alpha__)
+#define DRM_CAS_RESULT(_result)		long _result
+#elif defined(__powerpc__)
+#define DRM_CAS_RESULT(_result)		int _result
+#else
+#define DRM_CAS_RESULT(_result)		char _result
+#endif
+
+#define DRM_LIGHT_LOCK(fd,lock,context)                                \
+	do {                                                           \
+                DRM_CAS_RESULT(__ret);                                 \
+		DRM_CAS(lock,context,DRM_LOCK_HELD|context,__ret);     \
+                if (__ret) drmGetLock(fd,context,0);                   \
+        } while(0)
+
+				/* This one counts fast locks -- for
+                                   benchmarking only. */
+#define DRM_LIGHT_LOCK_COUNT(fd,lock,context,count)                    \
+	do {                                                           \
+                DRM_CAS_RESULT(__ret);                                 \
+		DRM_CAS(lock,context,DRM_LOCK_HELD|context,__ret);     \
+                if (__ret) drmGetLock(fd,context,0);                   \
+                else       ++count;                                    \
+        } while(0)
+
+#define DRM_LOCK(fd,lock,context,flags)                                \
+	do {                                                           \
+		if (flags) drmGetLock(fd,context,flags);               \
+		else       DRM_LIGHT_LOCK(fd,lock,context);            \
+	} while(0)
+
+#define DRM_UNLOCK(fd,lock,context)                                    \
+	do {                                                           \
+                DRM_CAS_RESULT(__ret);                                 \
+		DRM_CAS(lock,DRM_LOCK_HELD|context,context,__ret);     \
+                if (__ret) drmUnlock(fd,context);                      \
+        } while(0)
+
+				/* Simple spin locks */
+#define DRM_SPINLOCK(spin,val)                                         \
+	do {                                                           \
+            DRM_CAS_RESULT(__ret);                                     \
+	    do {                                                       \
+		DRM_CAS(spin,0,val,__ret);                             \
+		if (__ret) while ((spin)->lock);                       \
+	    } while (__ret);                                           \
+	} while(0)
+
+#define DRM_SPINLOCK_TAKE(spin,val)                                    \
+	do {                                                           \
+            DRM_CAS_RESULT(__ret);                                     \
+            int  cur;                                                  \
+	    do {                                                       \
+                cur = (*spin).lock;                                    \
+		DRM_CAS(spin,cur,val,__ret);                           \
+	    } while (__ret);                                           \
+	} while(0)
+
+#define DRM_SPINLOCK_COUNT(spin,val,count,__ret)                       \
+	do {                                                           \
+            int  __i;                                                  \
+            __ret = 1;                                                 \
+            for (__i = 0; __ret && __i < count; __i++) {               \
+		DRM_CAS(spin,0,val,__ret);                             \
+		if (__ret) for (;__i < count && (spin)->lock; __i++);  \
+	    }                                                          \
+	} while(0)
+
+#define DRM_SPINUNLOCK(spin,val)                                       \
+	do {                                                           \
+            DRM_CAS_RESULT(__ret);                                     \
+            if ((*spin).lock == val) { /* else server stole lock */    \
+	        do {                                                   \
+		    DRM_CAS(spin,val,0,__ret);                         \
+	        } while (__ret);                                       \
+            }                                                          \
+	} while(0)
+
+
+
+/* General user-level programmer's API: unprivileged */
+extern int           drmAvailable(void);
+extern int           drmOpen(const char *name, const char *busid);
+
+#define DRM_NODE_PRIMARY 0
+#define DRM_NODE_CONTROL 1
+#define DRM_NODE_RENDER  2
+#define DRM_NODE_MAX     3
+
+extern int           drmOpenWithType(const char *name, const char *busid,
+                                     int type);
+
+extern int           drmOpenControl(int minor);
+extern int           drmOpenRender(int minor);
+extern int           drmClose(int fd);
+extern drmVersionPtr drmGetVersion(int fd);
+extern drmVersionPtr drmGetLibVersion(int fd);
+extern int           drmGetCap(int fd, uint64_t capability, uint64_t *value);
+extern void          drmFreeVersion(drmVersionPtr);
+extern int           drmGetMagic(int fd, drm_magic_t * magic);
+extern char          *drmGetBusid(int fd);
+extern int           drmGetInterruptFromBusID(int fd, int busnum, int devnum,
+					      int funcnum);
+extern int           drmGetMap(int fd, int idx, drm_handle_t *offset,
+			       drmSize *size, drmMapType *type,
+			       drmMapFlags *flags, drm_handle_t *handle,
+			       int *mtrr);
+extern int           drmGetClient(int fd, int idx, int *auth, int *pid,
+				  int *uid, unsigned long *magic,
+				  unsigned long *iocs);
+extern int           drmGetStats(int fd, drmStatsT *stats);
+extern int           drmSetInterfaceVersion(int fd, drmSetVersion *version);
+extern int           drmCommandNone(int fd, unsigned long drmCommandIndex);
+extern int           drmCommandRead(int fd, unsigned long drmCommandIndex,
+                                    void *data, unsigned long size);
+extern int           drmCommandWrite(int fd, unsigned long drmCommandIndex,
+                                     void *data, unsigned long size);
+extern int           drmCommandWriteRead(int fd, unsigned long drmCommandIndex,
+                                         void *data, unsigned long size);
+
+/* General user-level programmer's API: X server (root) only  */
+extern void          drmFreeBusid(const char *busid);
+extern int           drmSetBusid(int fd, const char *busid);
+extern int           drmAuthMagic(int fd, drm_magic_t magic);
+extern int           drmAddMap(int fd,
+			       drm_handle_t offset,
+			       drmSize size,
+			       drmMapType type,
+			       drmMapFlags flags,
+			       drm_handle_t * handle);
+extern int	     drmRmMap(int fd, drm_handle_t handle);
+extern int	     drmAddContextPrivateMapping(int fd, drm_context_t ctx_id,
+						 drm_handle_t handle);
+
+extern int           drmAddBufs(int fd, int count, int size,
+				drmBufDescFlags flags,
+				int agp_offset);
+extern int           drmMarkBufs(int fd, double low, double high);
+extern int           drmCreateContext(int fd, drm_context_t * handle);
+extern int           drmSetContextFlags(int fd, drm_context_t context,
+					drm_context_tFlags flags);
+extern int           drmGetContextFlags(int fd, drm_context_t context,
+					drm_context_tFlagsPtr flags);
+extern int           drmAddContextTag(int fd, drm_context_t context, void *tag);
+extern int           drmDelContextTag(int fd, drm_context_t context);
+extern void          *drmGetContextTag(int fd, drm_context_t context);
+extern drm_context_t * drmGetReservedContextList(int fd, int *count);
+extern void          drmFreeReservedContextList(drm_context_t *);
+extern int           drmSwitchToContext(int fd, drm_context_t context);
+extern int           drmDestroyContext(int fd, drm_context_t handle);
+extern int           drmCreateDrawable(int fd, drm_drawable_t * handle);
+extern int           drmDestroyDrawable(int fd, drm_drawable_t handle);
+extern int           drmUpdateDrawableInfo(int fd, drm_drawable_t handle,
+					   drm_drawable_info_type_t type,
+					   unsigned int num, void *data);
+extern int           drmCtlInstHandler(int fd, int irq);
+extern int           drmCtlUninstHandler(int fd);
+extern int           drmSetClientCap(int fd, uint64_t capability,
+				     uint64_t value);
+
+extern int           drmCrtcGetSequence(int fd, uint32_t crtcId,
+					uint64_t *sequence, uint64_t *ns);
+extern int           drmCrtcQueueSequence(int fd, uint32_t crtcId,
+					  uint32_t flags, uint64_t sequence,
+					  uint64_t *sequence_queued,
+					  uint64_t user_data);
+/* General user-level programmer's API: authenticated client and/or X */
+extern int           drmMap(int fd,
+			    drm_handle_t handle,
+			    drmSize size,
+			    drmAddressPtr address);
+extern int           drmUnmap(drmAddress address, drmSize size);
+extern drmBufInfoPtr drmGetBufInfo(int fd);
+extern drmBufMapPtr  drmMapBufs(int fd);
+extern int           drmUnmapBufs(drmBufMapPtr bufs);
+extern int           drmDMA(int fd, drmDMAReqPtr request);
+extern int           drmFreeBufs(int fd, int count, int *list);
+extern int           drmGetLock(int fd,
+			        drm_context_t context,
+			        drmLockFlags flags);
+extern int           drmUnlock(int fd, drm_context_t context);
+extern int           drmFinish(int fd, int context, drmLockFlags flags);
+extern int	     drmGetContextPrivateMapping(int fd, drm_context_t ctx_id, 
+						 drm_handle_t * handle);
+
+/* AGP/GART support: X server (root) only */
+extern int           drmAgpAcquire(int fd);
+extern int           drmAgpRelease(int fd);
+extern int           drmAgpEnable(int fd, unsigned long mode);
+extern int           drmAgpAlloc(int fd, unsigned long size,
+				 unsigned long type, unsigned long *address,
+				 drm_handle_t *handle);
+extern int           drmAgpFree(int fd, drm_handle_t handle);
+extern int 	     drmAgpBind(int fd, drm_handle_t handle,
+				unsigned long offset);
+extern int           drmAgpUnbind(int fd, drm_handle_t handle);
+
+/* AGP/GART info: authenticated client and/or X */
+extern int           drmAgpVersionMajor(int fd);
+extern int           drmAgpVersionMinor(int fd);
+extern unsigned long drmAgpGetMode(int fd);
+extern unsigned long drmAgpBase(int fd); /* Physical location */
+extern unsigned long drmAgpSize(int fd); /* Bytes */
+extern unsigned long drmAgpMemoryUsed(int fd);
+extern unsigned long drmAgpMemoryAvail(int fd);
+extern unsigned int  drmAgpVendorId(int fd);
+extern unsigned int  drmAgpDeviceId(int fd);
+
+/* PCI scatter/gather support: X server (root) only */
+extern int           drmScatterGatherAlloc(int fd, unsigned long size,
+					   drm_handle_t *handle);
+extern int           drmScatterGatherFree(int fd, drm_handle_t handle);
+
+extern int           drmWaitVBlank(int fd, drmVBlankPtr vbl);
+
+/* Support routines */
+extern void          drmSetServerInfo(drmServerInfoPtr info);
+extern int           drmError(int err, const char *label);
+extern void          *drmMalloc(int size);
+extern void          drmFree(void *pt);
+
+/* Hash table routines */
+extern void *drmHashCreate(void);
+extern int  drmHashDestroy(void *t);
+extern int  drmHashLookup(void *t, unsigned long key, void **value);
+extern int  drmHashInsert(void *t, unsigned long key, void *value);
+extern int  drmHashDelete(void *t, unsigned long key);
+extern int  drmHashFirst(void *t, unsigned long *key, void **value);
+extern int  drmHashNext(void *t, unsigned long *key, void **value);
+
+/* PRNG routines */
+extern void          *drmRandomCreate(unsigned long seed);
+extern int           drmRandomDestroy(void *state);
+extern unsigned long drmRandom(void *state);
+extern double        drmRandomDouble(void *state);
+
+/* Skip list routines */
+
+extern void *drmSLCreate(void);
+extern int  drmSLDestroy(void *l);
+extern int  drmSLLookup(void *l, unsigned long key, void **value);
+extern int  drmSLInsert(void *l, unsigned long key, void *value);
+extern int  drmSLDelete(void *l, unsigned long key);
+extern int  drmSLNext(void *l, unsigned long *key, void **value);
+extern int  drmSLFirst(void *l, unsigned long *key, void **value);
+extern void drmSLDump(void *l);
+extern int  drmSLLookupNeighbors(void *l, unsigned long key,
+				 unsigned long *prev_key, void **prev_value,
+				 unsigned long *next_key, void **next_value);
+
+extern int drmOpenOnce(void *unused, const char *BusID, int *newlyopened);
+extern int drmOpenOnceWithType(const char *BusID, int *newlyopened, int type);
+extern void drmCloseOnce(int fd);
+extern void drmMsg(const char *format, ...) DRM_PRINTFLIKE(1, 2);
+
+extern int drmSetMaster(int fd);
+extern int drmDropMaster(int fd);
+extern int drmIsMaster(int fd);
+
+#define DRM_EVENT_CONTEXT_VERSION 4
+
+typedef struct _drmEventContext {
+
+	/* This struct is versioned so we can add more pointers if we
+	 * add more events. */
+	int version;
+
+	void (*vblank_handler)(int fd,
+			       unsigned int sequence, 
+			       unsigned int tv_sec,
+			       unsigned int tv_usec,
+			       void *user_data);
+
+	void (*page_flip_handler)(int fd,
+				  unsigned int sequence,
+				  unsigned int tv_sec,
+				  unsigned int tv_usec,
+				  void *user_data);
+
+	void (*page_flip_handler2)(int fd,
+				   unsigned int sequence,
+				   unsigned int tv_sec,
+				   unsigned int tv_usec,
+				   unsigned int crtc_id,
+				   void *user_data);
+
+	void (*sequence_handler)(int fd,
+				 uint64_t sequence,
+				 uint64_t ns,
+				 uint64_t user_data);
+} drmEventContext, *drmEventContextPtr;
+
+extern int drmHandleEvent(int fd, drmEventContextPtr evctx);
+
+extern char *drmGetDeviceNameFromFd(int fd);
+
+/* Improved version of drmGetDeviceNameFromFd which attributes for any type of
+ * device/node - card, control or renderD.
+ */
+extern char *drmGetDeviceNameFromFd2(int fd);
+extern int drmGetNodeTypeFromFd(int fd);
+
+/* Convert between GEM handles and DMA-BUF file descriptors.
+ *
+ * Warning: since GEM handles are not reference-counted and are unique per
+ * DRM file description, the caller is expected to perform its own reference
+ * counting. drmPrimeFDToHandle is guaranteed to return the same handle for
+ * different FDs if they reference the same underlying buffer object. This
+ * could even be a buffer object originally created on the same DRM FD.
+ *
+ * When sharing a DRM FD with an API such as EGL or GBM, the caller must not
+ * use drmPrimeHandleToFD nor drmPrimeFDToHandle. A single user-space
+ * reference-counting implementation is necessary to avoid double-closing GEM
+ * handles.
+ *
+ * Two processes can't share the same DRM FD and both use it to create or
+ * import GEM handles, even when using a single user-space reference-counting
+ * implementation like GBM, because GBM doesn't share its state between
+ * processes.
+ */
+extern int drmPrimeHandleToFD(int fd, uint32_t handle, uint32_t flags, int *prime_fd);
+extern int drmPrimeFDToHandle(int fd, int prime_fd, uint32_t *handle);
+
+extern int drmCloseBufferHandle(int fd, uint32_t handle);
+
+extern char *drmGetPrimaryDeviceNameFromFd(int fd);
+extern char *drmGetRenderDeviceNameFromFd(int fd);
+
+#define DRM_BUS_PCI       0
+#define DRM_BUS_USB       1
+#define DRM_BUS_PLATFORM  2
+#define DRM_BUS_HOST1X    3
+
+typedef struct _drmPciBusInfo {
+    uint16_t domain;
+    uint8_t bus;
+    uint8_t dev;
+    uint8_t func;
+} drmPciBusInfo, *drmPciBusInfoPtr;
+
+typedef struct _drmPciDeviceInfo {
+    uint16_t vendor_id;
+    uint16_t device_id;
+    uint16_t subvendor_id;
+    uint16_t subdevice_id;
+    uint8_t revision_id;
+} drmPciDeviceInfo, *drmPciDeviceInfoPtr;
+
+typedef struct _drmUsbBusInfo {
+    uint8_t bus;
+    uint8_t dev;
+} drmUsbBusInfo, *drmUsbBusInfoPtr;
+
+typedef struct _drmUsbDeviceInfo {
+    uint16_t vendor;
+    uint16_t product;
+} drmUsbDeviceInfo, *drmUsbDeviceInfoPtr;
+
+#define DRM_PLATFORM_DEVICE_NAME_LEN 512
+
+typedef struct _drmPlatformBusInfo {
+    char fullname[DRM_PLATFORM_DEVICE_NAME_LEN];
+} drmPlatformBusInfo, *drmPlatformBusInfoPtr;
+
+typedef struct _drmPlatformDeviceInfo {
+    char **compatible; /* NULL terminated list of compatible strings */
+} drmPlatformDeviceInfo, *drmPlatformDeviceInfoPtr;
+
+#define DRM_HOST1X_DEVICE_NAME_LEN 512
+
+typedef struct _drmHost1xBusInfo {
+    char fullname[DRM_HOST1X_DEVICE_NAME_LEN];
+} drmHost1xBusInfo, *drmHost1xBusInfoPtr;
+
+typedef struct _drmHost1xDeviceInfo {
+    char **compatible; /* NULL terminated list of compatible strings */
+} drmHost1xDeviceInfo, *drmHost1xDeviceInfoPtr;
+
+typedef struct _drmDevice {
+    char **nodes; /* DRM_NODE_MAX sized array */
+    int available_nodes; /* DRM_NODE_* bitmask */
+    int bustype;
+    union {
+        drmPciBusInfoPtr pci;
+        drmUsbBusInfoPtr usb;
+        drmPlatformBusInfoPtr platform;
+        drmHost1xBusInfoPtr host1x;
+    } businfo;
+    union {
+        drmPciDeviceInfoPtr pci;
+        drmUsbDeviceInfoPtr usb;
+        drmPlatformDeviceInfoPtr platform;
+        drmHost1xDeviceInfoPtr host1x;
+    } deviceinfo;
+} drmDevice, *drmDevicePtr;
+
+extern int drmGetDevice(int fd, drmDevicePtr *device);
+extern void drmFreeDevice(drmDevicePtr *device);
+
+extern int drmGetDevices(drmDevicePtr devices[], int max_devices);
+extern void drmFreeDevices(drmDevicePtr devices[], int count);
+
+#define DRM_DEVICE_GET_PCI_REVISION (1 << 0)
+extern int drmGetDevice2(int fd, uint32_t flags, drmDevicePtr *device);
+extern int drmGetDevices2(uint32_t flags, drmDevicePtr devices[], int max_devices);
+
+extern int drmGetDeviceFromDevId(dev_t dev_id, uint32_t flags, drmDevicePtr *device);
+
+extern int drmDevicesEqual(drmDevicePtr a, drmDevicePtr b);
+
+extern int drmSyncobjCreate(int fd, uint32_t flags, uint32_t *handle);
+extern int drmSyncobjDestroy(int fd, uint32_t handle);
+extern int drmSyncobjHandleToFD(int fd, uint32_t handle, int *obj_fd);
+extern int drmSyncobjFDToHandle(int fd, int obj_fd, uint32_t *handle);
+
+extern int drmSyncobjImportSyncFile(int fd, uint32_t handle, int sync_file_fd);
+extern int drmSyncobjExportSyncFile(int fd, uint32_t handle, int *sync_file_fd);
+extern int drmSyncobjWait(int fd, uint32_t *handles, unsigned num_handles,
+			  int64_t timeout_nsec, unsigned flags,
+			  uint32_t *first_signaled);
+extern int drmSyncobjReset(int fd, const uint32_t *handles, uint32_t handle_count);
+extern int drmSyncobjSignal(int fd, const uint32_t *handles, uint32_t handle_count);
+extern int drmSyncobjTimelineSignal(int fd, const uint32_t *handles,
+				    uint64_t *points, uint32_t handle_count);
+extern int drmSyncobjTimelineWait(int fd, uint32_t *handles, uint64_t *points,
+				  unsigned num_handles,
+				  int64_t timeout_nsec, unsigned flags,
+				  uint32_t *first_signaled);
+extern int drmSyncobjQuery(int fd, uint32_t *handles, uint64_t *points,
+			   uint32_t handle_count);
+extern int drmSyncobjQuery2(int fd, uint32_t *handles, uint64_t *points,
+			    uint32_t handle_count, uint32_t flags);
+extern int drmSyncobjTransfer(int fd,
+			      uint32_t dst_handle, uint64_t dst_point,
+			      uint32_t src_handle, uint64_t src_point,
+			      uint32_t flags);
+
+extern char *
+drmGetFormatModifierVendor(uint64_t modifier);
+
+extern char *
+drmGetFormatModifierName(uint64_t modifier);
+
+#ifndef fourcc_mod_get_vendor
+#define fourcc_mod_get_vendor(modifier) \
+       (((modifier) >> 56) & 0xff)
+#endif
+
+#if defined(__cplusplus)
+}
+#endif
+
+#endif
diff --git a/third_party/drm/libdrm/moz.build b/third_party/drm/libdrm/moz.build
new file mode 100644
index 0000000..3b37b91
--- /dev/null
+++ b/third_party/drm/libdrm/moz.build
@@ -0,0 +1,16 @@
+# -*- Mode: python; indent-tabs-mode: nil; tab-width: 40 -*-
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+SOURCES += [
+    'mozdrm.cpp',
+]
+
+if CONFIG["MOZ_WIDGET_TOOLKIT"] == "gtk":
+    CXXFLAGS += CONFIG['MOZ_GTK3_CFLAGS']
+
+LOCAL_INCLUDES += ['/third_party/drm']
+
+FINAL_LIBRARY = 'xul'
diff --git a/third_party/drm/libdrm/mozdrm.cpp b/third_party/drm/libdrm/mozdrm.cpp
new file mode 100644
index 0000000..b2fb59b
--- /dev/null
+++ b/third_party/drm/libdrm/mozdrm.cpp
@@ -0,0 +1,66 @@
+/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:expandtab:shiftwidth=4:tabstop=4:
+ */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "mozilla/Types.h"
+#include "prlink.h"
+
+#include <drm/xf86drm.h>
+
+#define GET_FUNC(func, lib)                                  \
+    func##_fn =                                              \
+      (decltype(func##_fn))PR_FindFunctionSymbol(lib, #func) \
+
+#define IS_FUNC_LOADED(func)                                          \
+    (func != nullptr)                                                 \
+
+static int (*drmGetDevices2_fn)(uint32_t flags, drmDevicePtr devices[], int max_devices);
+static void (*drmFreeDevices_fn)(drmDevicePtr devices[], int count);
+
+bool IsDRMLibraryLoaded() {
+  static bool isLoaded =
+         (IS_FUNC_LOADED(drmGetDevices2_fn) &&
+          IS_FUNC_LOADED(drmFreeDevices_fn));
+
+  return isLoaded;
+}
+
+bool LoadDRMLibrary() {
+  static PRLibrary* drmLib = nullptr;
+  static bool drmInitialized = false;
+
+  //TODO Thread safe
+  if (!drmInitialized) {
+    drmInitialized = true;
+    drmLib = PR_LoadLibrary("libdrm.so.2");
+    if (!drmLib) {
+      return false;
+    }
+
+    GET_FUNC(drmGetDevices2, drmLib);
+    GET_FUNC(drmFreeDevices, drmLib);
+  }
+
+  return IsDRMLibraryLoaded();
+}
+
+int
+drmGetDevices2(uint32_t flags, drmDevicePtr devices[], int max_devices)
+{
+  if (!LoadDRMLibrary()) {
+    return 0;
+  }
+  return drmGetDevices2_fn(flags, devices, max_devices);
+}
+
+void
+drmFreeDevices(drmDevicePtr devices[], int count)
+{
+  if (!LoadDRMLibrary()) {
+    return;
+  }
+  return drmFreeDevices_fn(devices, count);
+}
diff --git a/third_party/gbm/README b/third_party/gbm/README
new file mode 100644
index 0000000..4b6e2e8
--- /dev/null
+++ b/third_party/gbm/README
@@ -0,0 +1,4 @@
+Libgbm is a gbm library wrapper needed to build and run Firefox with
+Pipewire support on Linux (https://gitlab.freedesktop.org/mesa/gbm).
+
+libgbm directory stores headers of libgbm needed for build only.
diff --git a/third_party/gbm/gbm/gbm.h b/third_party/gbm/gbm/gbm.h
new file mode 100644
index 0000000..a963ed7
--- /dev/null
+++ b/third_party/gbm/gbm/gbm.h
@@ -0,0 +1,452 @@
+/*
+ * Copyright © 2011 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT.  IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * Authors:
+ *    Benjamin Franzke <benjaminfranzke@googlemail.com>
+ */
+
+#ifndef _GBM_H_
+#define _GBM_H_
+
+#define __GBM__ 1
+
+#include <stddef.h>
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+/**
+ * \file gbm.h
+ * \brief Generic Buffer Manager
+ */
+
+struct gbm_device;
+struct gbm_bo;
+struct gbm_surface;
+
+/**
+ * \mainpage The Generic Buffer Manager
+ *
+ * This module provides an abstraction that the caller can use to request a
+ * buffer from the underlying memory management system for the platform.
+ *
+ * This allows the creation of portable code whilst still allowing access to
+ * the underlying memory manager.
+ */
+
+/**
+ * Abstraction representing the handle to a buffer allocated by the
+ * manager
+ */
+union gbm_bo_handle {
+   void *ptr;
+   int32_t s32;
+   uint32_t u32;
+   int64_t s64;
+   uint64_t u64;
+};
+
+/** Format of the allocated buffer */
+enum gbm_bo_format {
+   /** RGB with 8 bits per channel in a 32 bit value */
+   GBM_BO_FORMAT_XRGB8888, 
+   /** ARGB with 8 bits per channel in a 32 bit value */
+   GBM_BO_FORMAT_ARGB8888
+};
+
+
+/**
+ * The FourCC format codes are taken from the drm_fourcc.h definition, and
+ * re-namespaced. New GBM formats must not be added, unless they are
+ * identical ports from drm_fourcc.
+ */
+#define __gbm_fourcc_code(a,b,c,d) ((uint32_t)(a) | ((uint32_t)(b) << 8) | \
+			      ((uint32_t)(c) << 16) | ((uint32_t)(d) << 24))
+
+#define GBM_FORMAT_BIG_ENDIAN (1<<31) /* format is big endian instead of little endian */
+
+/* color index */
+#define GBM_FORMAT_C8		__gbm_fourcc_code('C', '8', ' ', ' ') /* [7:0] C */
+
+/* 8 bpp Red */
+#define GBM_FORMAT_R8		__gbm_fourcc_code('R', '8', ' ', ' ') /* [7:0] R */
+
+/* 16 bpp Red */
+#define GBM_FORMAT_R16          __gbm_fourcc_code('R', '1', '6', ' ') /* [15:0] R little endian */
+
+/* 16 bpp RG */
+#define GBM_FORMAT_GR88		__gbm_fourcc_code('G', 'R', '8', '8') /* [15:0] G:R 8:8 little endian */
+
+/* 8 bpp RGB */
+#define GBM_FORMAT_RGB332	__gbm_fourcc_code('R', 'G', 'B', '8') /* [7:0] R:G:B 3:3:2 */
+#define GBM_FORMAT_BGR233	__gbm_fourcc_code('B', 'G', 'R', '8') /* [7:0] B:G:R 2:3:3 */
+
+/* 16 bpp RGB */
+#define GBM_FORMAT_XRGB4444	__gbm_fourcc_code('X', 'R', '1', '2') /* [15:0] x:R:G:B 4:4:4:4 little endian */
+#define GBM_FORMAT_XBGR4444	__gbm_fourcc_code('X', 'B', '1', '2') /* [15:0] x:B:G:R 4:4:4:4 little endian */
+#define GBM_FORMAT_RGBX4444	__gbm_fourcc_code('R', 'X', '1', '2') /* [15:0] R:G:B:x 4:4:4:4 little endian */
+#define GBM_FORMAT_BGRX4444	__gbm_fourcc_code('B', 'X', '1', '2') /* [15:0] B:G:R:x 4:4:4:4 little endian */
+
+#define GBM_FORMAT_ARGB4444	__gbm_fourcc_code('A', 'R', '1', '2') /* [15:0] A:R:G:B 4:4:4:4 little endian */
+#define GBM_FORMAT_ABGR4444	__gbm_fourcc_code('A', 'B', '1', '2') /* [15:0] A:B:G:R 4:4:4:4 little endian */
+#define GBM_FORMAT_RGBA4444	__gbm_fourcc_code('R', 'A', '1', '2') /* [15:0] R:G:B:A 4:4:4:4 little endian */
+#define GBM_FORMAT_BGRA4444	__gbm_fourcc_code('B', 'A', '1', '2') /* [15:0] B:G:R:A 4:4:4:4 little endian */
+
+#define GBM_FORMAT_XRGB1555	__gbm_fourcc_code('X', 'R', '1', '5') /* [15:0] x:R:G:B 1:5:5:5 little endian */
+#define GBM_FORMAT_XBGR1555	__gbm_fourcc_code('X', 'B', '1', '5') /* [15:0] x:B:G:R 1:5:5:5 little endian */
+#define GBM_FORMAT_RGBX5551	__gbm_fourcc_code('R', 'X', '1', '5') /* [15:0] R:G:B:x 5:5:5:1 little endian */
+#define GBM_FORMAT_BGRX5551	__gbm_fourcc_code('B', 'X', '1', '5') /* [15:0] B:G:R:x 5:5:5:1 little endian */
+
+#define GBM_FORMAT_ARGB1555	__gbm_fourcc_code('A', 'R', '1', '5') /* [15:0] A:R:G:B 1:5:5:5 little endian */
+#define GBM_FORMAT_ABGR1555	__gbm_fourcc_code('A', 'B', '1', '5') /* [15:0] A:B:G:R 1:5:5:5 little endian */
+#define GBM_FORMAT_RGBA5551	__gbm_fourcc_code('R', 'A', '1', '5') /* [15:0] R:G:B:A 5:5:5:1 little endian */
+#define GBM_FORMAT_BGRA5551	__gbm_fourcc_code('B', 'A', '1', '5') /* [15:0] B:G:R:A 5:5:5:1 little endian */
+
+#define GBM_FORMAT_RGB565	__gbm_fourcc_code('R', 'G', '1', '6') /* [15:0] R:G:B 5:6:5 little endian */
+#define GBM_FORMAT_BGR565	__gbm_fourcc_code('B', 'G', '1', '6') /* [15:0] B:G:R 5:6:5 little endian */
+
+/* 24 bpp RGB */
+#define GBM_FORMAT_RGB888	__gbm_fourcc_code('R', 'G', '2', '4') /* [23:0] R:G:B little endian */
+#define GBM_FORMAT_BGR888	__gbm_fourcc_code('B', 'G', '2', '4') /* [23:0] B:G:R little endian */
+
+/* 32 bpp RGB */
+#define GBM_FORMAT_XRGB8888	__gbm_fourcc_code('X', 'R', '2', '4') /* [31:0] x:R:G:B 8:8:8:8 little endian */
+#define GBM_FORMAT_XBGR8888	__gbm_fourcc_code('X', 'B', '2', '4') /* [31:0] x:B:G:R 8:8:8:8 little endian */
+#define GBM_FORMAT_RGBX8888	__gbm_fourcc_code('R', 'X', '2', '4') /* [31:0] R:G:B:x 8:8:8:8 little endian */
+#define GBM_FORMAT_BGRX8888	__gbm_fourcc_code('B', 'X', '2', '4') /* [31:0] B:G:R:x 8:8:8:8 little endian */
+
+#define GBM_FORMAT_ARGB8888	__gbm_fourcc_code('A', 'R', '2', '4') /* [31:0] A:R:G:B 8:8:8:8 little endian */
+#define GBM_FORMAT_ABGR8888	__gbm_fourcc_code('A', 'B', '2', '4') /* [31:0] A:B:G:R 8:8:8:8 little endian */
+#define GBM_FORMAT_RGBA8888	__gbm_fourcc_code('R', 'A', '2', '4') /* [31:0] R:G:B:A 8:8:8:8 little endian */
+#define GBM_FORMAT_BGRA8888	__gbm_fourcc_code('B', 'A', '2', '4') /* [31:0] B:G:R:A 8:8:8:8 little endian */
+
+#define GBM_FORMAT_XRGB2101010	__gbm_fourcc_code('X', 'R', '3', '0') /* [31:0] x:R:G:B 2:10:10:10 little endian */
+#define GBM_FORMAT_XBGR2101010	__gbm_fourcc_code('X', 'B', '3', '0') /* [31:0] x:B:G:R 2:10:10:10 little endian */
+#define GBM_FORMAT_RGBX1010102	__gbm_fourcc_code('R', 'X', '3', '0') /* [31:0] R:G:B:x 10:10:10:2 little endian */
+#define GBM_FORMAT_BGRX1010102	__gbm_fourcc_code('B', 'X', '3', '0') /* [31:0] B:G:R:x 10:10:10:2 little endian */
+
+#define GBM_FORMAT_ARGB2101010	__gbm_fourcc_code('A', 'R', '3', '0') /* [31:0] A:R:G:B 2:10:10:10 little endian */
+#define GBM_FORMAT_ABGR2101010	__gbm_fourcc_code('A', 'B', '3', '0') /* [31:0] A:B:G:R 2:10:10:10 little endian */
+#define GBM_FORMAT_RGBA1010102	__gbm_fourcc_code('R', 'A', '3', '0') /* [31:0] R:G:B:A 10:10:10:2 little endian */
+#define GBM_FORMAT_BGRA1010102	__gbm_fourcc_code('B', 'A', '3', '0') /* [31:0] B:G:R:A 10:10:10:2 little endian */
+
+/*
+ * Floating point 64bpp RGB
+ * IEEE 754-2008 binary16 half-precision float
+ * [15:0] sign:exponent:mantissa 1:5:10
+ */
+#define GBM_FORMAT_XBGR16161616F __gbm_fourcc_code('X', 'B', '4', 'H') /* [63:0] x:B:G:R 16:16:16:16 little endian */
+
+#define GBM_FORMAT_ABGR16161616F __gbm_fourcc_code('A', 'B', '4', 'H') /* [63:0] A:B:G:R 16:16:16:16 little endian */
+
+/* packed YCbCr */
+#define GBM_FORMAT_YUYV		__gbm_fourcc_code('Y', 'U', 'Y', 'V') /* [31:0] Cr0:Y1:Cb0:Y0 8:8:8:8 little endian */
+#define GBM_FORMAT_YVYU		__gbm_fourcc_code('Y', 'V', 'Y', 'U') /* [31:0] Cb0:Y1:Cr0:Y0 8:8:8:8 little endian */
+#define GBM_FORMAT_UYVY		__gbm_fourcc_code('U', 'Y', 'V', 'Y') /* [31:0] Y1:Cr0:Y0:Cb0 8:8:8:8 little endian */
+#define GBM_FORMAT_VYUY		__gbm_fourcc_code('V', 'Y', 'U', 'Y') /* [31:0] Y1:Cb0:Y0:Cr0 8:8:8:8 little endian */
+
+#define GBM_FORMAT_AYUV		__gbm_fourcc_code('A', 'Y', 'U', 'V') /* [31:0] A:Y:Cb:Cr 8:8:8:8 little endian */
+
+/*
+ * 2 plane YCbCr
+ * index 0 = Y plane, [7:0] Y
+ * index 1 = Cr:Cb plane, [15:0] Cr:Cb little endian
+ * or
+ * index 1 = Cb:Cr plane, [15:0] Cb:Cr little endian
+ */
+#define GBM_FORMAT_NV12		__gbm_fourcc_code('N', 'V', '1', '2') /* 2x2 subsampled Cr:Cb plane */
+#define GBM_FORMAT_NV21		__gbm_fourcc_code('N', 'V', '2', '1') /* 2x2 subsampled Cb:Cr plane */
+#define GBM_FORMAT_NV16		__gbm_fourcc_code('N', 'V', '1', '6') /* 2x1 subsampled Cr:Cb plane */
+#define GBM_FORMAT_NV61		__gbm_fourcc_code('N', 'V', '6', '1') /* 2x1 subsampled Cb:Cr plane */
+
+/*
+ * 3 plane YCbCr
+ * index 0: Y plane, [7:0] Y
+ * index 1: Cb plane, [7:0] Cb
+ * index 2: Cr plane, [7:0] Cr
+ * or
+ * index 1: Cr plane, [7:0] Cr
+ * index 2: Cb plane, [7:0] Cb
+ */
+#define GBM_FORMAT_YUV410	__gbm_fourcc_code('Y', 'U', 'V', '9') /* 4x4 subsampled Cb (1) and Cr (2) planes */
+#define GBM_FORMAT_YVU410	__gbm_fourcc_code('Y', 'V', 'U', '9') /* 4x4 subsampled Cr (1) and Cb (2) planes */
+#define GBM_FORMAT_YUV411	__gbm_fourcc_code('Y', 'U', '1', '1') /* 4x1 subsampled Cb (1) and Cr (2) planes */
+#define GBM_FORMAT_YVU411	__gbm_fourcc_code('Y', 'V', '1', '1') /* 4x1 subsampled Cr (1) and Cb (2) planes */
+#define GBM_FORMAT_YUV420	__gbm_fourcc_code('Y', 'U', '1', '2') /* 2x2 subsampled Cb (1) and Cr (2) planes */
+#define GBM_FORMAT_YVU420	__gbm_fourcc_code('Y', 'V', '1', '2') /* 2x2 subsampled Cr (1) and Cb (2) planes */
+#define GBM_FORMAT_YUV422	__gbm_fourcc_code('Y', 'U', '1', '6') /* 2x1 subsampled Cb (1) and Cr (2) planes */
+#define GBM_FORMAT_YVU422	__gbm_fourcc_code('Y', 'V', '1', '6') /* 2x1 subsampled Cr (1) and Cb (2) planes */
+#define GBM_FORMAT_YUV444	__gbm_fourcc_code('Y', 'U', '2', '4') /* non-subsampled Cb (1) and Cr (2) planes */
+#define GBM_FORMAT_YVU444	__gbm_fourcc_code('Y', 'V', '2', '4') /* non-subsampled Cr (1) and Cb (2) planes */
+
+struct gbm_format_name_desc {
+   char name[5];
+};
+
+/**
+ * Flags to indicate the intended use for the buffer - these are passed into
+ * gbm_bo_create(). The caller must set the union of all the flags that are
+ * appropriate
+ *
+ * \sa Use gbm_device_is_format_supported() to check if the combination of format
+ * and use flags are supported
+ */
+enum gbm_bo_flags {
+   /**
+    * Buffer is going to be presented to the screen using an API such as KMS
+    */
+   GBM_BO_USE_SCANOUT      = (1 << 0),
+   /**
+    * Buffer is going to be used as cursor
+    */
+   GBM_BO_USE_CURSOR       = (1 << 1),
+   /**
+    * Deprecated
+    */
+   GBM_BO_USE_CURSOR_64X64 = GBM_BO_USE_CURSOR,
+   /**
+    * Buffer is to be used for rendering - for example it is going to be used
+    * as the storage for a color buffer
+    */
+   GBM_BO_USE_RENDERING    = (1 << 2),
+   /**
+    * Buffer can be used for gbm_bo_write.  This is guaranteed to work
+    * with GBM_BO_USE_CURSOR, but may not work for other combinations.
+    */
+   GBM_BO_USE_WRITE    = (1 << 3),
+   /**
+    * Buffer is linear, i.e. not tiled.
+    */
+   GBM_BO_USE_LINEAR = (1 << 4),
+   /**
+    * Buffer is protected, i.e. encrypted and not readable by CPU or any
+    * other non-secure / non-trusted components nor by non-trusted OpenGL,
+    * OpenCL, and Vulkan applications.
+    */
+   GBM_BO_USE_PROTECTED = (1 << 5),
+};
+
+int
+gbm_device_get_fd(struct gbm_device *gbm);
+
+const char *
+gbm_device_get_backend_name(struct gbm_device *gbm);
+
+int
+gbm_device_is_format_supported(struct gbm_device *gbm,
+                               uint32_t format, uint32_t flags);
+
+int
+gbm_device_get_format_modifier_plane_count(struct gbm_device *gbm,
+                                           uint32_t format,
+                                           uint64_t modifier);
+
+void
+gbm_device_destroy(struct gbm_device *gbm);
+
+struct gbm_device *
+gbm_create_device(int fd);
+
+struct gbm_bo *
+gbm_bo_create(struct gbm_device *gbm,
+              uint32_t width, uint32_t height,
+              uint32_t format, uint32_t flags);
+
+struct gbm_bo *
+gbm_bo_create_with_modifiers(struct gbm_device *gbm,
+                             uint32_t width, uint32_t height,
+                             uint32_t format,
+                             const uint64_t *modifiers,
+                             const unsigned int count);
+
+struct gbm_bo *
+gbm_bo_create_with_modifiers2(struct gbm_device *gbm,
+                              uint32_t width, uint32_t height,
+                              uint32_t format,
+                              const uint64_t *modifiers,
+                              const unsigned int count,
+                              uint32_t flags);
+
+#define GBM_BO_IMPORT_WL_BUFFER         0x5501
+#define GBM_BO_IMPORT_EGL_IMAGE         0x5502
+#define GBM_BO_IMPORT_FD                0x5503
+#define GBM_BO_IMPORT_FD_MODIFIER       0x5504
+
+struct gbm_import_fd_data {
+   int fd;
+   uint32_t width;
+   uint32_t height;
+   uint32_t stride;
+   uint32_t format;
+};
+
+#define GBM_MAX_PLANES 4
+
+struct gbm_import_fd_modifier_data {
+   uint32_t width;
+   uint32_t height;
+   uint32_t format;
+   uint32_t num_fds;
+   int fds[GBM_MAX_PLANES];
+   int strides[GBM_MAX_PLANES];
+   int offsets[GBM_MAX_PLANES];
+   uint64_t modifier;
+};
+
+struct gbm_bo *
+gbm_bo_import(struct gbm_device *gbm, uint32_t type,
+              void *buffer, uint32_t flags);
+
+/**
+ * Flags to indicate the type of mapping for the buffer - these are
+ * passed into gbm_bo_map(). The caller must set the union of all the
+ * flags that are appropriate.
+ *
+ * These flags are independent of the GBM_BO_USE_* creation flags. However,
+ * mapping the buffer may require copying to/from a staging buffer.
+ *
+ * See also: pipe_map_flags
+ */
+enum gbm_bo_transfer_flags {
+   /**
+    * Buffer contents read back (or accessed directly) at transfer
+    * create time.
+    */
+   GBM_BO_TRANSFER_READ       = (1 << 0),
+   /**
+    * Buffer contents will be written back at unmap time
+    * (or modified as a result of being accessed directly).
+    */
+   GBM_BO_TRANSFER_WRITE      = (1 << 1),
+   /**
+    * Read/modify/write
+    */
+   GBM_BO_TRANSFER_READ_WRITE = (GBM_BO_TRANSFER_READ | GBM_BO_TRANSFER_WRITE),
+};
+
+void *
+gbm_bo_map(struct gbm_bo *bo,
+           uint32_t x, uint32_t y, uint32_t width, uint32_t height,
+           uint32_t flags, uint32_t *stride, void **map_data);
+
+void
+gbm_bo_unmap(struct gbm_bo *bo, void *map_data);
+
+uint32_t
+gbm_bo_get_width(struct gbm_bo *bo);
+
+uint32_t
+gbm_bo_get_height(struct gbm_bo *bo);
+
+uint32_t
+gbm_bo_get_stride(struct gbm_bo *bo);
+
+uint32_t
+gbm_bo_get_stride_for_plane(struct gbm_bo *bo, int plane);
+
+uint32_t
+gbm_bo_get_format(struct gbm_bo *bo);
+
+uint32_t
+gbm_bo_get_bpp(struct gbm_bo *bo);
+
+uint32_t
+gbm_bo_get_offset(struct gbm_bo *bo, int plane);
+
+struct gbm_device *
+gbm_bo_get_device(struct gbm_bo *bo);
+
+union gbm_bo_handle
+gbm_bo_get_handle(struct gbm_bo *bo);
+
+int
+gbm_bo_get_fd(struct gbm_bo *bo);
+
+uint64_t
+gbm_bo_get_modifier(struct gbm_bo *bo);
+
+int
+gbm_bo_get_plane_count(struct gbm_bo *bo);
+
+union gbm_bo_handle
+gbm_bo_get_handle_for_plane(struct gbm_bo *bo, int plane);
+
+int
+gbm_bo_get_fd_for_plane(struct gbm_bo *bo, int plane);
+
+int
+gbm_bo_write(struct gbm_bo *bo, const void *buf, size_t count);
+
+void
+gbm_bo_set_user_data(struct gbm_bo *bo, void *data,
+		     void (*destroy_user_data)(struct gbm_bo *, void *));
+
+void *
+gbm_bo_get_user_data(struct gbm_bo *bo);
+
+void
+gbm_bo_destroy(struct gbm_bo *bo);
+
+struct gbm_surface *
+gbm_surface_create(struct gbm_device *gbm,
+                   uint32_t width, uint32_t height,
+		   uint32_t format, uint32_t flags);
+
+struct gbm_surface *
+gbm_surface_create_with_modifiers(struct gbm_device *gbm,
+                                  uint32_t width, uint32_t height,
+                                  uint32_t format,
+                                  const uint64_t *modifiers,
+                                  const unsigned int count);
+
+struct gbm_surface *
+gbm_surface_create_with_modifiers2(struct gbm_device *gbm,
+                                   uint32_t width, uint32_t height,
+                                   uint32_t format,
+                                   const uint64_t *modifiers,
+                                   const unsigned int count,
+                                   uint32_t flags);
+
+struct gbm_bo *
+gbm_surface_lock_front_buffer(struct gbm_surface *surface);
+
+void
+gbm_surface_release_buffer(struct gbm_surface *surface, struct gbm_bo *bo);
+
+int
+gbm_surface_has_free_buffers(struct gbm_surface *surface);
+
+void
+gbm_surface_destroy(struct gbm_surface *surface);
+
+char *
+gbm_format_get_name(uint32_t gbm_format, struct gbm_format_name_desc *desc);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/third_party/gbm/libgbm/moz.build b/third_party/gbm/libgbm/moz.build
new file mode 100644
index 0000000..0953d2f
--- /dev/null
+++ b/third_party/gbm/libgbm/moz.build
@@ -0,0 +1,16 @@
+# -*- Mode: python; indent-tabs-mode: nil; tab-width: 40 -*-
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+SOURCES += [
+    'mozgbm.cpp',
+]
+
+if CONFIG["MOZ_WIDGET_TOOLKIT"] == "gtk":
+    CXXFLAGS += CONFIG['MOZ_GTK3_CFLAGS']
+
+LOCAL_INCLUDES += ['/third_party/gbm']
+
+FINAL_LIBRARY = 'xul'
diff --git a/third_party/gbm/libgbm/mozgbm.cpp b/third_party/gbm/libgbm/mozgbm.cpp
new file mode 100644
index 0000000..bc024a1
--- /dev/null
+++ b/third_party/gbm/libgbm/mozgbm.cpp
@@ -0,0 +1,66 @@
+/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:expandtab:shiftwidth=4:tabstop=4:
+ */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "mozilla/Types.h"
+#include "prlink.h"
+
+#include <gbm/gbm.h>
+
+#define GET_FUNC(func, lib)                                  \
+    func##_fn =                                              \
+      (decltype(func##_fn))PR_FindFunctionSymbol(lib, #func) \
+
+#define IS_FUNC_LOADED(func)                                          \
+    (func != nullptr)                                                 \
+
+static struct gbm_device * (*gbm_create_device_fn)(int fd);
+static void (*gbm_device_destroy_fn)(struct gbm_device* gbm);
+
+bool IsGBMLibraryLoaded() {
+  static bool isLoaded =
+         (IS_FUNC_LOADED(gbm_create_device_fn) &&
+          IS_FUNC_LOADED(gbm_device_destroy_fn));
+
+  return isLoaded;
+}
+
+bool LoadGBMLibrary() {
+  static PRLibrary* gbmLib = nullptr;
+  static bool gbmInitialized = false;
+
+  //TODO Thread safe
+  if (!gbmInitialized) {
+    gbmInitialized = true;
+    gbmLib = PR_LoadLibrary("libgbm.so.1");
+    if (!gbmLib) {
+      return false;
+    }
+
+    GET_FUNC(gbm_create_device, gbmLib);
+    GET_FUNC(gbm_device_destroy, gbmLib);
+  }
+
+  return IsGBMLibraryLoaded();
+}
+
+struct gbm_device *
+gbm_create_device(int fd)
+{
+  if (!LoadGBMLibrary()) {
+    return nullptr;
+  }
+  return gbm_create_device_fn(fd);
+}
+
+void
+gbm_device_destroy(struct gbm_device* gbm)
+{
+  if (!LoadGBMLibrary()) {
+    return;
+  }
+  return gbm_device_destroy_fn(gbm);
+}
diff --git a/third_party/libwebrtc/modules/desktop_capture/desktop_capture_generic_gn/moz.build b/third_party/libwebrtc/modules/desktop_capture/desktop_capture_generic_gn/moz.build
index a5cf923..99cabbf 100644
--- a/third_party/libwebrtc/modules/desktop_capture/desktop_capture_generic_gn/moz.build
+++ b/third_party/libwebrtc/modules/desktop_capture/desktop_capture_generic_gn/moz.build
@@ -77,6 +77,8 @@ if CONFIG["OS_TARGET"] == "Darwin":
     LOCAL_INCLUDES += [
         "/media/libyuv/libyuv/include/",
         "/media/libyuv/libyuv/include/",
+        "/third_party/drm/",
+        "/third_party/gbm/",
         "/third_party/pipewire/"
     ]
 
@@ -108,7 +110,8 @@ if CONFIG["OS_TARGET"] == "Linux":
     LOCAL_INCLUDES += [
         "/media/libyuv/libyuv/include/",
         "/media/libyuv/libyuv/include/",
-        "/third_party/pipewire/",
+        "/third_party/drm/",
+        "/third_party/gbm/",
         "/third_party/pipewire/"
     ]
 
@@ -126,15 +129,18 @@ if CONFIG["OS_TARGET"] == "Linux":
     ]
 
     SOURCES += [
-        "/third_party/libwebrtc/modules/desktop_capture/linux/base_capturer_pipewire.cc"
+        "/third_party/libwebrtc/modules/desktop_capture/linux/base_capturer_pipewire.cc",
+        "/third_party/libwebrtc/modules/desktop_capture/linux/egl_dmabuf.cc",
+        "/third_party/libwebrtc/modules/desktop_capture/linux/mouse_cursor_monitor_pipewire.cc",
+        "/third_party/libwebrtc/modules/desktop_capture/linux/scoped_glib.cc",
+        "/third_party/libwebrtc/modules/desktop_capture/linux/screencast_portal.cc",
+        "/third_party/libwebrtc/modules/desktop_capture/linux/shared_screencast_stream.cc"
     ]
 
     UNIFIED_SOURCES += [
         "/third_party/libwebrtc/modules/desktop_capture/linux/mouse_cursor_monitor_x11.cc",
-        "/third_party/libwebrtc/modules/desktop_capture/linux/screen_capturer_pipewire.cc",
         "/third_party/libwebrtc/modules/desktop_capture/linux/screen_capturer_x11.cc",
         "/third_party/libwebrtc/modules/desktop_capture/linux/shared_x_display.cc",
-        "/third_party/libwebrtc/modules/desktop_capture/linux/window_capturer_pipewire.cc",
         "/third_party/libwebrtc/modules/desktop_capture/linux/window_capturer_x11.cc",
         "/third_party/libwebrtc/modules/desktop_capture/linux/window_finder_x11.cc",
         "/third_party/libwebrtc/modules/desktop_capture/linux/window_list_utils.cc",
@@ -162,6 +168,8 @@ if CONFIG["OS_TARGET"] == "OpenBSD":
 
     LOCAL_INCLUDES += [
         "/media/libyuv/libyuv/include/",
+        "/third_party/drm/",
+        "/third_party/gbm/",
         "/third_party/pipewire/"
     ]
 
@@ -177,15 +185,18 @@ if CONFIG["OS_TARGET"] == "OpenBSD":
     ]
 
     SOURCES += [
-        "/third_party/libwebrtc/modules/desktop_capture/linux/base_capturer_pipewire.cc"
+        "/third_party/libwebrtc/modules/desktop_capture/linux/base_capturer_pipewire.cc",
+        "/third_party/libwebrtc/modules/desktop_capture/linux/egl_dmabuf.cc",
+        "/third_party/libwebrtc/modules/desktop_capture/linux/mouse_cursor_monitor_pipewire.cc",
+        "/third_party/libwebrtc/modules/desktop_capture/linux/scoped_glib.cc",
+        "/third_party/libwebrtc/modules/desktop_capture/linux/screencast_portal.cc",
+        "/third_party/libwebrtc/modules/desktop_capture/linux/shared_screencast_stream.cc"
     ]
 
     UNIFIED_SOURCES += [
         "/third_party/libwebrtc/modules/desktop_capture/linux/mouse_cursor_monitor_x11.cc",
-        "/third_party/libwebrtc/modules/desktop_capture/linux/screen_capturer_pipewire.cc",
         "/third_party/libwebrtc/modules/desktop_capture/linux/screen_capturer_x11.cc",
         "/third_party/libwebrtc/modules/desktop_capture/linux/shared_x_display.cc",
-        "/third_party/libwebrtc/modules/desktop_capture/linux/window_capturer_pipewire.cc",
         "/third_party/libwebrtc/modules/desktop_capture/linux/window_capturer_x11.cc",
         "/third_party/libwebrtc/modules/desktop_capture/linux/window_finder_x11.cc",
         "/third_party/libwebrtc/modules/desktop_capture/linux/window_list_utils.cc",
@@ -227,6 +238,7 @@ if CONFIG["OS_TARGET"] == "WINNT":
     LOCAL_INCLUDES += [
         "/media/libyuv/libyuv/include/",
         "/media/libyuv/libyuv/include/",
+        "/third_party/drm/"
         "/third_party/pipewire/"
     ]
 
diff --git a/third_party/libwebrtc/modules/desktop_capture/desktop_capture_options.cc b/third_party/libwebrtc/modules/desktop_capture/desktop_capture_options.cc
index c89896d..c8ef822 100644
--- a/third_party/libwebrtc/modules/desktop_capture/desktop_capture_options.cc
+++ b/third_party/libwebrtc/modules/desktop_capture/desktop_capture_options.cc
@@ -14,6 +14,9 @@
 #elif defined(WEBRTC_WIN)
 #include "modules/desktop_capture/win/full_screen_win_application_handler.h"
 #endif
+#if defined(WEBRTC_USE_PIPEWIRE)
+#include "modules/desktop_capture/linux/shared_screencast_stream.h"
+#endif
 
 namespace webrtc {
 
@@ -35,6 +38,9 @@ DesktopCaptureOptions DesktopCaptureOptions::CreateDefault() {
 #if defined(WEBRTC_USE_X11)
   result.set_x_display(SharedXDisplay::CreateDefault());
 #endif
+#if defined(WEBRTC_USE_PIPEWIRE)
+  result.set_screencast_stream(SharedScreenCastStream::CreateDefault());
+#endif
 #if defined(WEBRTC_MAC) && !defined(WEBRTC_IOS)
   result.set_configuration_monitor(new DesktopConfigurationMonitor());
   result.set_full_screen_window_detector(
diff --git a/third_party/libwebrtc/modules/desktop_capture/desktop_capture_options.h b/third_party/libwebrtc/modules/desktop_capture/desktop_capture_options.h
index ee0dd3a..ac56c8c 100644
--- a/third_party/libwebrtc/modules/desktop_capture/desktop_capture_options.h
+++ b/third_party/libwebrtc/modules/desktop_capture/desktop_capture_options.h
@@ -17,6 +17,10 @@
 #include "modules/desktop_capture/linux/shared_x_display.h"
 #endif
 
+#if defined(WEBRTC_USE_PIPEWIRE)
+#include "modules/desktop_capture/linux/shared_screencast_stream.h"
+#endif
+
 #if defined(WEBRTC_MAC) && !defined(WEBRTC_IOS)
 #include "modules/desktop_capture/mac/desktop_configuration_monitor.h"
 #endif
@@ -149,13 +153,26 @@ class RTC_EXPORT DesktopCaptureOptions {
 #if defined(WEBRTC_USE_PIPEWIRE)
   bool allow_pipewire() const { return allow_pipewire_; }
   void set_allow_pipewire(bool allow) { allow_pipewire_ = allow; }
+
+  const rtc::scoped_refptr<SharedScreenCastStream>& screencast_stream() const {
+    return screencast_stream_;
+  }
+  void set_screencast_stream(
+      rtc::scoped_refptr<SharedScreenCastStream> stream) {
+    screencast_stream_ = stream;
+  }
 #endif
 
  private:
 #if defined(WEBRTC_USE_X11)
   rtc::scoped_refptr<SharedXDisplay> x_display_;
 #endif
-
+#if defined(WEBRTC_USE_PIPEWIRE)
+  // An instance of shared PipeWire ScreenCast stream we share between
+  // BaseCapturerPipeWire and MouseCursorMonitorPipeWire as cursor information
+  // is sent together with screen content.
+  rtc::scoped_refptr<SharedScreenCastStream> screencast_stream_;
+#endif
 #if defined(WEBRTC_MAC) && !defined(WEBRTC_IOS)
   rtc::scoped_refptr<DesktopConfigurationMonitor> configuration_monitor_;
   bool allow_iosurface_ = false;
diff --git a/third_party/libwebrtc/modules/desktop_capture/linux/base_capturer_pipewire.cc b/third_party/libwebrtc/modules/desktop_capture/linux/base_capturer_pipewire.cc
index 2fd3b1a..e4685fc 100644
--- a/third_party/libwebrtc/modules/desktop_capture/linux/base_capturer_pipewire.cc
+++ b/third_party/libwebrtc/modules/desktop_capture/linux/base_capturer_pipewire.cc
@@ -10,937 +10,67 @@
 
 #include "modules/desktop_capture/linux/base_capturer_pipewire.h"
 
-#include <gio/gunixfdlist.h>
-#include <glib-object.h>
-#include <spa/param/format-utils.h>
-#include <spa/param/props.h>
-
-#include <sys/mman.h>
-#include <sys/ioctl.h>
-#include <sys/syscall.h>
-
-#include <cstring>
-#include <memory>
-#include <utility>
-
-#include "absl/memory/memory.h"
 #include "modules/desktop_capture/desktop_capture_options.h"
 #include "modules/desktop_capture/desktop_capturer.h"
 #include "rtc_base/checks.h"
 #include "rtc_base/logging.h"
 
-#if defined(WEBRTC_DLOPEN_PIPEWIRE)
-#include "modules/desktop_capture/linux/pipewire_stubs.h"
-
-using modules_desktop_capture_linux::InitializeStubs;
-using modules_desktop_capture_linux::kModulePipewire;
-using modules_desktop_capture_linux::StubPathMap;
-#endif  // defined(WEBRTC_DLOPEN_PIPEWIRE)
-
 namespace webrtc {
 
-const char kDesktopBusName[] = "org.freedesktop.portal.Desktop";
-const char kDesktopObjectPath[] = "/org/freedesktop/portal/desktop";
-const char kDesktopRequestObjectPath[] =
-    "/org/freedesktop/portal/desktop/request";
-const char kSessionInterfaceName[] = "org.freedesktop.portal.Session";
-const char kRequestInterfaceName[] = "org.freedesktop.portal.Request";
-const char kScreenCastInterfaceName[] = "org.freedesktop.portal.ScreenCast";
-
-const int kBytesPerPixel = 4;
-
-#if defined(WEBRTC_DLOPEN_PIPEWIRE)
-const char kPipeWireLib[] = "libpipewire-0.2.so.1";
-#endif
-
-// static
-struct dma_buf_sync {
-  uint64_t flags;
-};
-#define DMA_BUF_SYNC_READ      (1 << 0)
-#define DMA_BUF_SYNC_START     (0 << 2)
-#define DMA_BUF_SYNC_END       (1 << 2)
-#define DMA_BUF_BASE           'b'
-#define DMA_BUF_IOCTL_SYNC     _IOW(DMA_BUF_BASE, 0, struct dma_buf_sync)
-
-static void SyncDmaBuf(int fd, uint64_t start_or_end) {
-  struct dma_buf_sync sync = { 0 };
-
-  sync.flags = start_or_end | DMA_BUF_SYNC_READ;
-
-  while(true) {
-    int ret;
-    ret = ioctl (fd, DMA_BUF_IOCTL_SYNC, &sync);
-    if (ret == -1 && errno == EINTR) {
-      continue;
-    } else if (ret == -1) {
-      RTC_LOG(LS_ERROR) << "Failed to synchronize DMA buffer: " << g_strerror(errno);
-      break;
-    } else {
-      break;
-    }
-  }
-}
-
-// static
-void BaseCapturerPipeWire::OnCoreError(void *data,
-                                       uint32_t id,
-                                       int seq,
-                                       int res,
-                                       const char *message) {
-  RTC_LOG(LS_ERROR) << "core error: " << message;
-}
-
-// static
-void BaseCapturerPipeWire::OnStreamStateChanged(void* data,
-                                                pw_stream_state old_state,
-                                                pw_stream_state state,
-                                                const char* error_message) {
-  BaseCapturerPipeWire* that = static_cast<BaseCapturerPipeWire*>(data);
-  RTC_DCHECK(that);
-
-  switch (state) {
-    case PW_STREAM_STATE_ERROR:
-      RTC_LOG(LS_ERROR) << "PipeWire stream state error: " << error_message;
-      break;
-    case PW_STREAM_STATE_PAUSED:
-    case PW_STREAM_STATE_STREAMING:
-    case PW_STREAM_STATE_UNCONNECTED:
-    case PW_STREAM_STATE_CONNECTING:
-      break;
-  }
+BaseCapturerPipeWire::BaseCapturerPipeWire(const DesktopCaptureOptions& options)
+    : options_(options) {
+  screencast_portal_ = std::make_unique<ScreenCastPortal>(
+      ScreenCastPortal::CaptureSourceType::kAnyScreenContent, this);
 }
 
-// static
-void BaseCapturerPipeWire::OnStreamParamChanged(void *data, uint32_t id,
-                                                const struct spa_pod *format) {
-  BaseCapturerPipeWire* that = static_cast<BaseCapturerPipeWire*>(data);
-  RTC_DCHECK(that);
-
-  RTC_LOG(LS_INFO) << "PipeWire stream param changed.";
-
-  if (!format || id != SPA_PARAM_Format) {
-    return;
-  }
-
-  spa_format_video_raw_parse(format, &that->spa_video_format_);
-
-  auto width = that->spa_video_format_.size.width;
-  auto height = that->spa_video_format_.size.height;
-  // In order to be able to build in the non unified environment kBytesPerPixel
-  // must be fully qualified, see Bug 1725145
-  auto stride = SPA_ROUND_UP_N(width * BasicDesktopFrame::kBytesPerPixel, 4);
-  auto size = height * stride;
-
-  that->desktop_size_ = DesktopSize(width, height);
-
-  uint8_t buffer[1024] = {};
-  auto builder = spa_pod_builder{buffer, sizeof(buffer)};
-
-  // Setup buffers and meta header for new format.
-  const struct spa_pod* params[3];
-  params[0] = reinterpret_cast<spa_pod *>(spa_pod_builder_add_object(&builder,
-              SPA_TYPE_OBJECT_ParamBuffers, SPA_PARAM_Buffers,
-              SPA_PARAM_BUFFERS_dataType, SPA_POD_CHOICE_FLAGS_Int((1<<SPA_DATA_MemPtr) |
-                                                                   (1<<SPA_DATA_MemFd)),
-              SPA_PARAM_BUFFERS_size, SPA_POD_Int(size),
-              SPA_PARAM_BUFFERS_stride, SPA_POD_Int(stride),
-              SPA_PARAM_BUFFERS_buffers, SPA_POD_CHOICE_RANGE_Int(8, 1, 32)));
-  params[1] = reinterpret_cast<spa_pod *>(spa_pod_builder_add_object(&builder,
-              SPA_TYPE_OBJECT_ParamMeta, SPA_PARAM_Meta,
-              SPA_PARAM_META_type, SPA_POD_Id(SPA_META_Header),
-              SPA_PARAM_META_size, SPA_POD_Int(sizeof(struct spa_meta_header))));
-  params[2] = reinterpret_cast<spa_pod *>(spa_pod_builder_add_object(&builder,
-              SPA_TYPE_OBJECT_ParamMeta, SPA_PARAM_Meta,
-              SPA_PARAM_META_type, SPA_POD_Id (SPA_META_VideoCrop),
-              SPA_PARAM_META_size, SPA_POD_Int (sizeof(struct spa_meta_region))));
-  pw_stream_update_params(that->pw_stream_, params, 3);
-}
-
-// static
-void BaseCapturerPipeWire::OnStreamProcess(void* data) {
-  BaseCapturerPipeWire* that = static_cast<BaseCapturerPipeWire*>(data);
-  RTC_DCHECK(that);
-
-  struct pw_buffer *next_buffer;
-  struct pw_buffer *buffer = nullptr;
+BaseCapturerPipeWire::~BaseCapturerPipeWire() {}
 
-  next_buffer = pw_stream_dequeue_buffer(that->pw_stream_);
-  while (next_buffer) {
-    buffer = next_buffer;
-    next_buffer = pw_stream_dequeue_buffer(that->pw_stream_);
-
-    if (next_buffer) {
-      pw_stream_queue_buffer (that->pw_stream_, buffer);
-    }
-  }
-
-  if (!buffer) {
-    return;
+void BaseCapturerPipeWire::OnScreenCastRequestResult(
+    ScreenCastPortal::RequestResponse result,
+    uint32_t stream_node_id,
+    int fd) {
+  if (result != ScreenCastPortal::RequestResponse::kSuccess ||
+      !options_.screencast_stream()->StartScreenCastStream(stream_node_id,
+                                                           fd)) {
+    capturer_failed_ = true;
+    RTC_LOG(LS_ERROR) << "ScreenCastPortal failed: "
+                      << static_cast<uint>(result);
   }
-
-  that->HandleBuffer(buffer);
-
-  pw_stream_queue_buffer(that->pw_stream_, buffer);
 }
 
-BaseCapturerPipeWire::BaseCapturerPipeWire(CaptureSourceType source_type)
-    : capture_source_type_(source_type) {}
-
-BaseCapturerPipeWire::~BaseCapturerPipeWire() {
-  if (pw_main_loop_) {
-    pw_thread_loop_stop(pw_main_loop_);
-  }
-
-  if (pw_stream_) {
-    pw_stream_destroy(pw_stream_);
-  }
-
-  if (pw_core_) {
-    pw_core_disconnect(pw_core_);
-  }
-
-  if (pw_context_) {
-    pw_context_destroy(pw_context_);
-  }
-
-  if (pw_main_loop_) {
-    pw_thread_loop_destroy(pw_main_loop_);
+void BaseCapturerPipeWire::OnScreenCastSessionClosed() {
+  if (!capturer_failed_) {
+    options_.screencast_stream()->StopScreenCastStream();
   }
-
-  if (start_request_signal_id_) {
-    g_dbus_connection_signal_unsubscribe(connection_, start_request_signal_id_);
-  }
-  if (sources_request_signal_id_) {
-    g_dbus_connection_signal_unsubscribe(connection_,
-                                         sources_request_signal_id_);
-  }
-  if (session_request_signal_id_) {
-    g_dbus_connection_signal_unsubscribe(connection_,
-                                         session_request_signal_id_);
-  }
-
-  if (session_handle_) {
-    GDBusMessage* message = g_dbus_message_new_method_call(
-        kDesktopBusName, session_handle_, kSessionInterfaceName, "Close");
-    if (message) {
-      GError* error = nullptr;
-      g_dbus_connection_send_message(connection_, message,
-                                     G_DBUS_SEND_MESSAGE_FLAGS_NONE,
-                                     /*out_serial=*/nullptr, &error);
-      if (error) {
-        RTC_LOG(LS_ERROR) << "Failed to close the session: " << error->message;
-        g_error_free(error);
-      }
-      g_object_unref(message);
-    }
-  }
-
-  g_free(start_handle_);
-  g_free(sources_handle_);
-  g_free(session_handle_);
-  g_free(portal_handle_);
-
-  if (cancellable_) {
-    g_cancellable_cancel(cancellable_);
-    g_object_unref(cancellable_);
-    cancellable_ = nullptr;
-  }
-
-  if (proxy_) {
-    g_object_unref(proxy_);
-    proxy_ = nullptr;
-  }
-
-  if (pw_fd_ != -1) {
-    close(pw_fd_);
-  }
-}
-
-void BaseCapturerPipeWire::InitPortal() {
-  cancellable_ = g_cancellable_new();
-  g_dbus_proxy_new_for_bus(
-      G_BUS_TYPE_SESSION, G_DBUS_PROXY_FLAGS_NONE, /*info=*/nullptr,
-      kDesktopBusName, kDesktopObjectPath, kScreenCastInterfaceName,
-      cancellable_,
-      reinterpret_cast<GAsyncReadyCallback>(OnProxyRequested), this);
-}
-
-void BaseCapturerPipeWire::InitPipeWire() {
-#if defined(WEBRTC_DLOPEN_PIPEWIRE)
-  StubPathMap paths;
-
-  // Check if the PipeWire library is available.
-  paths[kModulePipewire].push_back(kPipeWireLib);
-  if (!InitializeStubs(paths)) {
-    RTC_LOG(LS_ERROR) << "Failed to load the PipeWire library and symbols.";
-    portal_init_failed_ = true;
-    return;
-  }
-#endif  // defined(WEBRTC_DLOPEN_PIPEWIRE)
-
-  pw_init(/*argc=*/nullptr, /*argc=*/nullptr);
-
-  pw_main_loop_ = pw_thread_loop_new("pipewire-main-loop", nullptr);
-  pw_context_ = pw_context_new(pw_thread_loop_get_loop(pw_main_loop_), nullptr, 0);
-  if (!pw_context_) {
-    RTC_LOG(LS_ERROR) << "Failed to create PipeWire context";
-    return;
-  }
-
-  pw_core_ = pw_context_connect_fd(pw_context_, pw_fd_, nullptr, 0);
-  if (!pw_core_) {
-    RTC_LOG(LS_ERROR) << "Failed to connect PipeWire context";
-    return;
-  }
-
-  // Initialize event handlers, remote end and stream-related.
-  pw_core_events_.version = PW_VERSION_CORE_EVENTS;
-  pw_core_events_.error = &OnCoreError;
-
-  pw_stream_events_.version = PW_VERSION_STREAM_EVENTS;
-  pw_stream_events_.state_changed = &OnStreamStateChanged;
-  pw_stream_events_.param_changed = &OnStreamParamChanged;
-  pw_stream_events_.process = &OnStreamProcess;
-
-  pw_core_add_listener(pw_core_, &spa_core_listener_, &pw_core_events_, this);
-
-  pw_stream_ = CreateReceivingStream();
-  if (!pw_stream_) {
-    RTC_LOG(LS_ERROR) << "Failed to create PipeWire stream";
-    return;
-  }
-
-  if (pw_thread_loop_start(pw_main_loop_) < 0) {
-    RTC_LOG(LS_ERROR) << "Failed to start main PipeWire loop";
-    portal_init_failed_ = true;
-  }
-
-  RTC_LOG(LS_INFO) << "PipeWire remote opened.";
-}
-
-pw_stream* BaseCapturerPipeWire::CreateReceivingStream() {
-  spa_rectangle pwMinScreenBounds = spa_rectangle{1, 1};
-  spa_rectangle pwMaxScreenBounds = spa_rectangle{UINT32_MAX, UINT32_MAX};
-
-  auto stream = pw_stream_new(pw_core_, "webrtc-pipewire-stream", nullptr);
-
-  if (!stream) {
-    RTC_LOG(LS_ERROR) << "Could not create receiving stream.";
-    return nullptr;
-  }
-
-  uint8_t buffer[1024] = {};
-  const spa_pod* params[2];
-  spa_pod_builder builder = SPA_POD_BUILDER_INIT(buffer, sizeof (buffer));
-
-  params[0] = reinterpret_cast<spa_pod *>(spa_pod_builder_add_object(&builder,
-              SPA_TYPE_OBJECT_Format, SPA_PARAM_EnumFormat,
-              SPA_FORMAT_mediaType, SPA_POD_Id(SPA_MEDIA_TYPE_video),
-              SPA_FORMAT_mediaSubtype, SPA_POD_Id(SPA_MEDIA_SUBTYPE_raw),
-              SPA_FORMAT_VIDEO_format, SPA_POD_CHOICE_ENUM_Id(5, SPA_VIDEO_FORMAT_BGRx, SPA_VIDEO_FORMAT_RGBx, SPA_VIDEO_FORMAT_RGBA,
-                                                                 SPA_VIDEO_FORMAT_BGRx, SPA_VIDEO_FORMAT_BGRA),
-              SPA_FORMAT_VIDEO_size, SPA_POD_CHOICE_RANGE_Rectangle(&pwMinScreenBounds,
-                                                                    &pwMinScreenBounds,
-                                                                    &pwMaxScreenBounds),
-              0));
-  pw_stream_add_listener(stream, &spa_stream_listener_, &pw_stream_events_, this);
-
-  if (pw_stream_connect(stream, PW_DIRECTION_INPUT, pw_stream_node_id_,
-      PW_STREAM_FLAG_AUTOCONNECT, params, 1) != 0) {
-    RTC_LOG(LS_ERROR) << "Could not connect receiving stream.";
-    portal_init_failed_ = true;
-  }
-
-  return stream;
-}
-
-static void SpaBufferUnmap(unsigned char *map, int map_size, bool IsDMABuf, int fd) {
-  if (map) {
-    if (IsDMABuf) {
-      SyncDmaBuf(fd, DMA_BUF_SYNC_END);
-    }
-    munmap(map, map_size);
-  }
-}
-
-void BaseCapturerPipeWire::HandleBuffer(pw_buffer* buffer) {
-  spa_buffer* spaBuffer = buffer->buffer;
-  uint8_t *map = nullptr;
-  uint8_t* src = nullptr;
-
-  if (spaBuffer->datas[0].chunk->size == 0) {
-    RTC_LOG(LS_ERROR) << "Failed to get video stream: Zero size.";
-    return;
-  }
-
-  switch (spaBuffer->datas[0].type) {
-    case SPA_DATA_MemFd:
-    case SPA_DATA_DmaBuf:
-      map = static_cast<uint8_t*>(mmap(
-          nullptr, spaBuffer->datas[0].maxsize + spaBuffer->datas[0].mapoffset,
-          PROT_READ, MAP_PRIVATE, spaBuffer->datas[0].fd, 0));
-      if (map == MAP_FAILED) {
-        RTC_LOG(LS_ERROR) << "Failed to mmap memory: " << std::strerror(errno);
-        return;
-      }
-      if (spaBuffer->datas[0].type == SPA_DATA_DmaBuf) {
-        SyncDmaBuf(spaBuffer->datas[0].fd, DMA_BUF_SYNC_START);
-      }
-      src = SPA_MEMBER(map, spaBuffer->datas[0].mapoffset, uint8_t);
-      break;
-    case SPA_DATA_MemPtr:
-      map = nullptr;
-      src = static_cast<uint8_t*>(spaBuffer->datas[0].data);
-      break;
-    default:
-      return;
-  }
-
-  if (!src) {
-    RTC_LOG(LS_ERROR) << "Failed to get video stream: Wrong data after mmap()";
-    SpaBufferUnmap(map,
-      spaBuffer->datas[0].maxsize + spaBuffer->datas[0].mapoffset,
-      spaBuffer->datas[0].type == SPA_DATA_DmaBuf, spaBuffer->datas[0].fd);
-    return;
-  }
-
-  struct spa_meta_region* video_metadata =
-    static_cast<struct spa_meta_region*>(
-       spa_buffer_find_meta_data(spaBuffer, SPA_META_VideoCrop, sizeof(*video_metadata)));
-
-  // Video size from metada is bigger than an actual video stream size.
-  // The metadata are wrong or we should up-scale te video...in both cases
-  // just quit now.
-  if (video_metadata &&
-      (video_metadata->region.size.width > (uint32_t)desktop_size_.width() ||
-        video_metadata->region.size.height > (uint32_t)desktop_size_.height())) {
-    RTC_LOG(LS_ERROR) << "Stream metadata sizes are wrong!";
-    SpaBufferUnmap(map,
-      spaBuffer->datas[0].maxsize + spaBuffer->datas[0].mapoffset,
-      spaBuffer->datas[0].type == SPA_DATA_DmaBuf, spaBuffer->datas[0].fd);
-    return;
-  }
-
-  // Use video metada when video size from metadata is set and smaller than
-  // video stream size, so we need to adjust it.
-  video_metadata_use_ = (video_metadata &&
-      video_metadata->region.size.width != 0 &&
-        video_metadata->region.size.height != 0 &&
-          (video_metadata->region.size.width < (uint32_t)desktop_size_.width() ||
-            video_metadata->region.size.height < (uint32_t)desktop_size_.height()));
-
-  DesktopSize video_size_prev = video_size_;
-    if (video_metadata_use_) {
-    video_size_ = DesktopSize(video_metadata->region.size.width,
-                              video_metadata->region.size.height);
-  } else {
-    video_size_ = desktop_size_;
-  }
-
-  webrtc::MutexLock lock(&current_frame_lock_);
-  if (!current_frame_ || !video_size_.equals(video_size_prev)) {
-    current_frame_ =
-      std::make_unique<uint8_t[]>
-        (video_size_.width() * video_size_.height() * BasicDesktopFrame::kBytesPerPixel);
-  }
-
-  const int32_t dstStride = video_size_.width() * BasicDesktopFrame::kBytesPerPixel;
-  const int32_t srcStride = spaBuffer->datas[0].chunk->stride;
-
-  // Adjust source content based on metadata video position
-  if (video_metadata_use_ &&
-      (video_metadata->region.position.y + video_size_.height() <= desktop_size_.height())) {
-    src += srcStride * video_metadata->region.position.y;
-  }
-  const int xOffset =
-      video_metadata_use_ &&
-        (video_metadata->region.position.x + video_size_.width() <= desktop_size_.width())
-          ? video_metadata->region.position.x * BasicDesktopFrame::kBytesPerPixel
-          : 0;
-
-  uint8_t* dst = current_frame_.get();
-  for (int i = 0; i < video_size_.height(); ++i) {
-    // Adjust source content based on crop video position if needed
-    src += xOffset;
-    std::memcpy(dst, src, dstStride);
-    // If both sides decided to go with the RGBx format we need to convert it to
-    // BGRx to match color format expected by WebRTC.
-    if (spa_video_format_.format == SPA_VIDEO_FORMAT_RGBx ||
-        spa_video_format_.format == SPA_VIDEO_FORMAT_RGBA) {
-      ConvertRGBxToBGRx(dst, dstStride);
-    }
-    src += srcStride - xOffset;
-    dst += dstStride;
-  }
-
-  SpaBufferUnmap(map,
-    spaBuffer->datas[0].maxsize + spaBuffer->datas[0].mapoffset,
-    spaBuffer->datas[0].type == SPA_DATA_DmaBuf, spaBuffer->datas[0].fd);
-}
-
-void BaseCapturerPipeWire::ConvertRGBxToBGRx(uint8_t* frame, uint32_t size) {
-  // Change color format for KDE KWin which uses RGBx and not BGRx
-  for (uint32_t i = 0; i < size; i += 4) {
-    uint8_t tempR = frame[i];
-    uint8_t tempB = frame[i + 2];
-    frame[i] = tempB;
-    frame[i + 2] = tempR;
-  }
-}
-
-guint BaseCapturerPipeWire::SetupRequestResponseSignal(
-    const gchar* object_path,
-    GDBusSignalCallback callback) {
-  return g_dbus_connection_signal_subscribe(
-      connection_, kDesktopBusName, kRequestInterfaceName, "Response",
-      object_path, /*arg0=*/nullptr, G_DBUS_SIGNAL_FLAGS_NO_MATCH_RULE,
-      callback, this, /*user_data_free_func=*/nullptr);
-}
-
-// static
-void BaseCapturerPipeWire::OnProxyRequested(GObject* /*object*/,
-                                            GAsyncResult* result,
-                                            gpointer user_data) {
-  BaseCapturerPipeWire* that = static_cast<BaseCapturerPipeWire*>(user_data);
-  RTC_DCHECK(that);
-
-  GError* error = nullptr;
-  GDBusProxy *proxy = g_dbus_proxy_new_finish(result, &error);
-  if (!proxy) {
-    if (g_error_matches(error, G_IO_ERROR, G_IO_ERROR_CANCELLED))
-      return;
-    RTC_LOG(LS_ERROR) << "Failed to create a proxy for the screen cast portal: "
-                      << error->message;
-    g_error_free(error);
-    that->portal_init_failed_ = true;
-    return;
-  }
-  that->proxy_ = proxy;
-  that->connection_ = g_dbus_proxy_get_connection(that->proxy_);
-
-  RTC_LOG(LS_INFO) << "Created proxy for the screen cast portal.";
-  that->SessionRequest();
-}
-
-// static
-gchar* BaseCapturerPipeWire::PrepareSignalHandle(GDBusConnection* connection,
-                                                 const gchar* token) {
-  gchar* sender = g_strdup(g_dbus_connection_get_unique_name(connection) + 1);
-  for (int i = 0; sender[i]; i++) {
-    if (sender[i] == '.') {
-      sender[i] = '_';
-    }
-  }
-
-  gchar* handle = g_strconcat(kDesktopRequestObjectPath, "/", sender, "/",
-                              token, /*end of varargs*/ nullptr);
-  g_free(sender);
-
-  return handle;
-}
-
-void BaseCapturerPipeWire::SessionRequest() {
-  GVariantBuilder builder;
-  gchar* variant_string;
-
-  g_variant_builder_init(&builder, G_VARIANT_TYPE_VARDICT);
-  variant_string =
-      g_strdup_printf("webrtc_session%d", g_random_int_range(0, G_MAXINT));
-  g_variant_builder_add(&builder, "{sv}", "session_handle_token",
-                        g_variant_new_string(variant_string));
-  g_free(variant_string);
-  variant_string = g_strdup_printf("webrtc%d", g_random_int_range(0, G_MAXINT));
-  g_variant_builder_add(&builder, "{sv}", "handle_token",
-                        g_variant_new_string(variant_string));
-
-  portal_handle_ = PrepareSignalHandle(connection_, variant_string);
-  session_request_signal_id_ = SetupRequestResponseSignal(
-      portal_handle_, OnSessionRequestResponseSignal);
-  g_free(variant_string);
-
-  RTC_LOG(LS_INFO) << "Screen cast session requested.";
-  g_dbus_proxy_call(
-      proxy_, "CreateSession", g_variant_new("(a{sv})", &builder),
-      G_DBUS_CALL_FLAGS_NONE, /*timeout=*/-1, cancellable_,
-      reinterpret_cast<GAsyncReadyCallback>(OnSessionRequested), this);
-}
-
-// static
-void BaseCapturerPipeWire::OnSessionRequested(GDBusProxy *proxy,
-                                              GAsyncResult* result,
-                                              gpointer user_data) {
-  BaseCapturerPipeWire* that = static_cast<BaseCapturerPipeWire*>(user_data);
-  RTC_DCHECK(that);
-
-  GError* error = nullptr;
-  GVariant* variant = g_dbus_proxy_call_finish(proxy, result, &error);
-  if (!variant) {
-    if (g_error_matches(error, G_IO_ERROR, G_IO_ERROR_CANCELLED))
-      return;
-    RTC_LOG(LS_ERROR) << "Failed to create a screen cast session: "
-                      << error->message;
-    g_error_free(error);
-    that->portal_init_failed_ = true;
-    return;
-  }
-  RTC_LOG(LS_INFO) << "Initializing the screen cast session.";
-
-  gchar* handle = nullptr;
-  g_variant_get_child(variant, 0, "o", &handle);
-  g_variant_unref(variant);
-  if (!handle) {
-    RTC_LOG(LS_ERROR) << "Failed to initialize the screen cast session.";
-    if (that->session_request_signal_id_) {
-      g_dbus_connection_signal_unsubscribe(that->connection_,
-                                           that->session_request_signal_id_);
-      that->session_request_signal_id_ = 0;
-    }
-    that->portal_init_failed_ = true;
-    return;
-  }
-
-  g_free(handle);
-
-  RTC_LOG(LS_INFO) << "Subscribing to the screen cast session.";
-}
-
-// static
-void BaseCapturerPipeWire::OnSessionRequestResponseSignal(
-    GDBusConnection* connection,
-    const gchar* sender_name,
-    const gchar* object_path,
-    const gchar* interface_name,
-    const gchar* signal_name,
-    GVariant* parameters,
-    gpointer user_data) {
-  BaseCapturerPipeWire* that = static_cast<BaseCapturerPipeWire*>(user_data);
-  RTC_DCHECK(that);
-
-  RTC_LOG(LS_INFO)
-      << "Received response for the screen cast session subscription.";
-
-  guint32 portal_response;
-  GVariant* response_data;
-  g_variant_get(parameters, "(u@a{sv})", &portal_response, &response_data);
-
-  GVariant* session_handle =
-      g_variant_lookup_value(response_data, "session_handle", NULL);
-  that->session_handle_ = g_variant_dup_string(session_handle, NULL);
-
-  g_variant_unref(session_handle);
-  g_variant_unref(response_data);
-
-  if (!that->session_handle_ || portal_response) {
-    RTC_LOG(LS_ERROR)
-        << "Failed to request the screen cast session subscription.";
-    that->portal_init_failed_ = true;
-    return;
-  }
-
-  that->SourcesRequest();
-}
-
-void BaseCapturerPipeWire::SourcesRequest() {
-  GVariantBuilder builder;
-  gchar* variant_string;
-
-  g_variant_builder_init(&builder, G_VARIANT_TYPE_VARDICT);
-  // We want to record monitor content.
-  g_variant_builder_add(&builder, "{sv}", "types",
-                        g_variant_new_uint32(capture_source_type_));
-  // We don't want to allow selection of multiple sources.
-  g_variant_builder_add(&builder, "{sv}", "multiple",
-                        g_variant_new_boolean(false));
-  variant_string = g_strdup_printf("webrtc%d", g_random_int_range(0, G_MAXINT));
-  g_variant_builder_add(&builder, "{sv}", "handle_token",
-                        g_variant_new_string(variant_string));
-
-  sources_handle_ = PrepareSignalHandle(connection_, variant_string);
-  sources_request_signal_id_ = SetupRequestResponseSignal(
-      sources_handle_, OnSourcesRequestResponseSignal);
-  g_free(variant_string);
-
-  RTC_LOG(LS_INFO) << "Requesting sources from the screen cast session.";
-  g_dbus_proxy_call(
-      proxy_, "SelectSources",
-      g_variant_new("(oa{sv})", session_handle_, &builder),
-      G_DBUS_CALL_FLAGS_NONE, /*timeout=*/-1, cancellable_,
-      reinterpret_cast<GAsyncReadyCallback>(OnSourcesRequested), this);
-}
-
-// static
-void BaseCapturerPipeWire::OnSourcesRequested(GDBusProxy *proxy,
-                                              GAsyncResult* result,
-                                              gpointer user_data) {
-  BaseCapturerPipeWire* that = static_cast<BaseCapturerPipeWire*>(user_data);
-  RTC_DCHECK(that);
-
-  GError* error = nullptr;
-  GVariant* variant = g_dbus_proxy_call_finish(proxy, result, &error);
-  if (!variant) {
-    if (g_error_matches(error, G_IO_ERROR, G_IO_ERROR_CANCELLED))
-      return;
-    RTC_LOG(LS_ERROR) << "Failed to request the sources: " << error->message;
-    g_error_free(error);
-    that->portal_init_failed_ = true;
-    return;
-  }
-
-  RTC_LOG(LS_INFO) << "Sources requested from the screen cast session.";
-
-  gchar* handle = nullptr;
-  g_variant_get_child(variant, 0, "o", &handle);
-  g_variant_unref(variant);
-  if (!handle) {
-    RTC_LOG(LS_ERROR) << "Failed to initialize the screen cast session.";
-    if (that->sources_request_signal_id_) {
-      g_dbus_connection_signal_unsubscribe(that->connection_,
-                                           that->sources_request_signal_id_);
-      that->sources_request_signal_id_ = 0;
-    }
-    that->portal_init_failed_ = true;
-    return;
-  }
-
-  g_free(handle);
-
-  RTC_LOG(LS_INFO) << "Subscribed to sources signal.";
-}
-
-// static
-void BaseCapturerPipeWire::OnSourcesRequestResponseSignal(
-    GDBusConnection* connection,
-    const gchar* sender_name,
-    const gchar* object_path,
-    const gchar* interface_name,
-    const gchar* signal_name,
-    GVariant* parameters,
-    gpointer user_data) {
-  BaseCapturerPipeWire* that = static_cast<BaseCapturerPipeWire*>(user_data);
-  RTC_DCHECK(that);
-
-  RTC_LOG(LS_INFO) << "Received sources signal from session.";
-
-  guint32 portal_response;
-  g_variant_get(parameters, "(u@a{sv})", &portal_response, nullptr);
-  if (portal_response) {
-    RTC_LOG(LS_ERROR)
-        << "Failed to select sources for the screen cast session.";
-    that->portal_init_failed_ = true;
-    return;
-  }
-
-  that->StartRequest();
-}
-
-void BaseCapturerPipeWire::StartRequest() {
-  GVariantBuilder builder;
-  gchar* variant_string;
-
-  g_variant_builder_init(&builder, G_VARIANT_TYPE_VARDICT);
-  variant_string = g_strdup_printf("webrtc%d", g_random_int_range(0, G_MAXINT));
-  g_variant_builder_add(&builder, "{sv}", "handle_token",
-                        g_variant_new_string(variant_string));
-
-  start_handle_ = PrepareSignalHandle(connection_, variant_string);
-  start_request_signal_id_ =
-      SetupRequestResponseSignal(start_handle_, OnStartRequestResponseSignal);
-  g_free(variant_string);
-
-  // "Identifier for the application window", this is Wayland, so not "x11:...".
-  const gchar parent_window[] = "";
-
-  RTC_LOG(LS_INFO) << "Starting the screen cast session.";
-  g_dbus_proxy_call(
-      proxy_, "Start",
-      g_variant_new("(osa{sv})", session_handle_, parent_window, &builder),
-      G_DBUS_CALL_FLAGS_NONE, /*timeout=*/-1, cancellable_,
-      reinterpret_cast<GAsyncReadyCallback>(OnStartRequested), this);
-}
-
-// static
-void BaseCapturerPipeWire::OnStartRequested(GDBusProxy *proxy,
-                                            GAsyncResult* result,
-                                            gpointer user_data) {
-  BaseCapturerPipeWire* that = static_cast<BaseCapturerPipeWire*>(user_data);
-  RTC_DCHECK(that);
-
-  GError* error = nullptr;
-  GVariant* variant = g_dbus_proxy_call_finish(proxy, result, &error);
-  if (!variant) {
-    if (g_error_matches(error, G_IO_ERROR, G_IO_ERROR_CANCELLED))
-      return;
-    RTC_LOG(LS_ERROR) << "Failed to start the screen cast session: "
-                      << error->message;
-    g_error_free(error);
-    that->portal_init_failed_ = true;
-    return;
-  }
-
-  RTC_LOG(LS_INFO) << "Initializing the start of the screen cast session.";
-
-  gchar* handle = nullptr;
-  g_variant_get_child(variant, 0, "o", &handle);
-  g_variant_unref(variant);
-  if (!handle) {
-    RTC_LOG(LS_ERROR)
-        << "Failed to initialize the start of the screen cast session.";
-    if (that->start_request_signal_id_) {
-      g_dbus_connection_signal_unsubscribe(that->connection_,
-                                           that->start_request_signal_id_);
-      that->start_request_signal_id_ = 0;
-    }
-    that->portal_init_failed_ = true;
-    return;
-  }
-
-  g_free(handle);
-
-  RTC_LOG(LS_INFO) << "Subscribed to the start signal.";
-}
-
-// static
-void BaseCapturerPipeWire::OnStartRequestResponseSignal(
-    GDBusConnection* connection,
-    const gchar* sender_name,
-    const gchar* object_path,
-    const gchar* interface_name,
-    const gchar* signal_name,
-    GVariant* parameters,
-    gpointer user_data) {
-  BaseCapturerPipeWire* that = static_cast<BaseCapturerPipeWire*>(user_data);
-  RTC_DCHECK(that);
-
-  RTC_LOG(LS_INFO) << "Start signal received.";
-  guint32 portal_response;
-  GVariant* response_data;
-  GVariantIter* iter = nullptr;
-  g_variant_get(parameters, "(u@a{sv})", &portal_response, &response_data);
-  if (portal_response || !response_data) {
-    RTC_LOG(LS_ERROR) << "Failed to start the screen cast session.";
-    that->portal_init_failed_ = true;
-    return;
-  }
-
-  // Array of PipeWire streams. See
-  // https://github.com/flatpak/xdg-desktop-portal/blob/master/data/org.freedesktop.portal.ScreenCast.xml
-  // documentation for <method name="Start">.
-  if (g_variant_lookup(response_data, "streams", "a(ua{sv})", &iter)) {
-    GVariant* variant;
-
-    while (g_variant_iter_next(iter, "@(ua{sv})", &variant)) {
-      guint32 stream_id;
-      GVariant* options;
-
-      g_variant_get(variant, "(u@a{sv})", &stream_id, &options);
-      RTC_DCHECK(options != nullptr);
-
-      that->pw_stream_node_id_ = stream_id;
-      g_variant_unref(options);
-      g_variant_unref(variant);
-    }
-  }
-  g_variant_iter_free(iter);
-  g_variant_unref(response_data);
-
-  that->OpenPipeWireRemote();
-}
-
-void BaseCapturerPipeWire::OpenPipeWireRemote() {
-  GVariantBuilder builder;
-  g_variant_builder_init(&builder, G_VARIANT_TYPE_VARDICT);
-
-  RTC_LOG(LS_INFO) << "Opening the PipeWire remote.";
-
-  g_dbus_proxy_call_with_unix_fd_list(
-      proxy_, "OpenPipeWireRemote",
-      g_variant_new("(oa{sv})", session_handle_, &builder),
-      G_DBUS_CALL_FLAGS_NONE, /*timeout=*/-1, /*fd_list=*/nullptr,
-      cancellable_,
-      reinterpret_cast<GAsyncReadyCallback>(OnOpenPipeWireRemoteRequested),
-      this);
-}
-
-// static
-void BaseCapturerPipeWire::OnOpenPipeWireRemoteRequested(
-    GDBusProxy *proxy,
-    GAsyncResult* result,
-    gpointer user_data) {
-  BaseCapturerPipeWire* that = static_cast<BaseCapturerPipeWire*>(user_data);
-  RTC_DCHECK(that);
-
-  GError* error = nullptr;
-  GUnixFDList* outlist = nullptr;
-  GVariant* variant = g_dbus_proxy_call_with_unix_fd_list_finish(
-      proxy, &outlist, result, &error);
-  if (!variant) {
-    if (g_error_matches(error, G_IO_ERROR, G_IO_ERROR_CANCELLED))
-      return;
-    RTC_LOG(LS_ERROR) << "Failed to open the PipeWire remote: "
-                      << error->message;
-    g_error_free(error);
-    that->portal_init_failed_ = true;
-    return;
-  }
-
-  gint32 index;
-  g_variant_get(variant, "(h)", &index);
-
-  if ((that->pw_fd_ = g_unix_fd_list_get(outlist, index, &error)) == -1) {
-    RTC_LOG(LS_ERROR) << "Failed to get file descriptor from the list: "
-                      << error->message;
-    g_error_free(error);
-    g_variant_unref(variant);
-    that->portal_init_failed_ = true;
-    return;
-  }
-
-  g_variant_unref(variant);
-  g_object_unref(outlist);
-
-  that->InitPipeWire();
 }
 
 void BaseCapturerPipeWire::Start(Callback* callback) {
   RTC_DCHECK(!callback_);
   RTC_DCHECK(callback);
 
-  InitPortal();
-
   callback_ = callback;
+
+  screencast_portal_->Start();
 }
 
 void BaseCapturerPipeWire::CaptureFrame() {
-  if (portal_init_failed_) {
+  if (capturer_failed_) {
     callback_->OnCaptureResult(Result::ERROR_PERMANENT, nullptr);
     return;
   }
 
-  webrtc::MutexLock lock(&current_frame_lock_);
-  if (!current_frame_) {
-    callback_->OnCaptureResult(Result::ERROR_TEMPORARY, nullptr);
-    return;
-  }
-
-  DesktopSize frame_size = desktop_size_;
-  if (video_metadata_use_) {
-    frame_size = video_size_;
-  }
+  std::unique_ptr<DesktopFrame> frame =
+      options_.screencast_stream()->CaptureFrame();
 
-  std::unique_ptr<DesktopFrame> result(new BasicDesktopFrame(frame_size));
-  result->CopyPixelsFrom(
-      current_frame_.get(), (frame_size.width() * BasicDesktopFrame::kBytesPerPixel),
-      DesktopRect::MakeWH(frame_size.width(), frame_size.height()));
-  if (!result) {
+  if (!frame || !frame->data()) {
     callback_->OnCaptureResult(Result::ERROR_TEMPORARY, nullptr);
     return;
   }
 
-  // TODO(julien.isorce): http://crbug.com/945468. Set the icc profile on the
-  // frame, see ScreenCapturerX11::CaptureFrame.
+  // TODO(julien.isorce): http://crbug.com/945468. Set the icc profile on
+  // the frame, see ScreenCapturerX11::CaptureFrame.
 
-  callback_->OnCaptureResult(Result::SUCCESS, std::move(result));
+  callback_->OnCaptureResult(Result::SUCCESS, std::move(frame));
 }
 
 // Keep in sync with defines at browser/actors/WebRTCParent.jsm
@@ -953,31 +83,13 @@ void BaseCapturerPipeWire::CaptureFrame() {
 #define PIPEWIRE_NAME "####_PIPEWIRE_PORTAL_####"
 
 bool BaseCapturerPipeWire::GetSourceList(SourceList* sources) {
+  RTC_DCHECK(sources->size() == 0);
   sources->push_back({PIPEWIRE_ID, 0, PIPEWIRE_NAME});
   return true;
 }
 
 bool BaseCapturerPipeWire::SelectSource(SourceId id) {
-  // Screen selection is handled by the xdg-desktop-portal.
   return id == PIPEWIRE_ID;
 }
 
-// static
-std::unique_ptr<DesktopCapturer>
-BaseCapturerPipeWire::CreateRawScreenCapturer(
-    const DesktopCaptureOptions& options) {
-  std::unique_ptr<BaseCapturerPipeWire> capturer =
-      std::make_unique<BaseCapturerPipeWire>(BaseCapturerPipeWire::CaptureSourceType::kAny);
-  return std::move(capturer);}
-
-// static
-std::unique_ptr<DesktopCapturer>
-BaseCapturerPipeWire::CreateRawWindowCapturer(
-    const DesktopCaptureOptions& options) {
-
-  std::unique_ptr<BaseCapturerPipeWire> capturer =
-      std::make_unique<BaseCapturerPipeWire>(BaseCapturerPipeWire::CaptureSourceType::kAny);
-  return std::move(capturer);
-}
-
 }  // namespace webrtc
diff --git a/third_party/libwebrtc/modules/desktop_capture/linux/base_capturer_pipewire.h b/third_party/libwebrtc/modules/desktop_capture/linux/base_capturer_pipewire.h
index af8e20c..5db09e0 100644
--- a/third_party/libwebrtc/modules/desktop_capture/linux/base_capturer_pipewire.h
+++ b/third_party/libwebrtc/modules/desktop_capture/linux/base_capturer_pipewire.h
@@ -11,160 +11,39 @@
 #ifndef MODULES_DESKTOP_CAPTURE_LINUX_BASE_CAPTURER_PIPEWIRE_H_
 #define MODULES_DESKTOP_CAPTURE_LINUX_BASE_CAPTURER_PIPEWIRE_H_
 
-#include <gio/gio.h>
-#define typeof __typeof__
-#include <pipewire/pipewire.h>
-#include <spa/param/video/format-utils.h>
-
 #include "modules/desktop_capture/desktop_capture_options.h"
 #include "modules/desktop_capture/desktop_capturer.h"
-#include "rtc_base/synchronization/mutex.h"
+#include "modules/desktop_capture/linux/screencast_portal.h"
+#include "modules/desktop_capture/linux/shared_screencast_stream.h"
 
 namespace webrtc {
 
-class BaseCapturerPipeWire : public DesktopCapturer {
+class BaseCapturerPipeWire : public DesktopCapturer,
+                             public ScreenCastPortal::PortalNotifier {
  public:
-  enum CaptureSourceType : uint32_t {
-    kScreen = 0b01,
-    kWindow = 0b10,
-    kAny = 0b11
-  };
-
-  explicit BaseCapturerPipeWire(CaptureSourceType source_type);
+  BaseCapturerPipeWire(const DesktopCaptureOptions& options);
   ~BaseCapturerPipeWire() override;
 
+  BaseCapturerPipeWire(const BaseCapturerPipeWire&) = delete;
+  BaseCapturerPipeWire& operator=(const BaseCapturerPipeWire&) = delete;
+
   // DesktopCapturer interface.
   void Start(Callback* delegate) override;
   void CaptureFrame() override;
   bool GetSourceList(SourceList* sources) override;
   bool SelectSource(SourceId id) override;
 
-  static std::unique_ptr<DesktopCapturer> CreateRawScreenCapturer(
-      const DesktopCaptureOptions& options);
-
-  static std::unique_ptr<DesktopCapturer> CreateRawWindowCapturer(
-      const DesktopCaptureOptions& options);
+  // ScreenCastPortal::PortalNotifier interface.
+  void OnScreenCastRequestResult(ScreenCastPortal::RequestResponse result,
+                                 uint32_t stream_node_id,
+                                 int fd) override;
+  void OnScreenCastSessionClosed() override;
 
  private:
-  // PipeWire types -->
-  pw_context* pw_context_ = nullptr;
-  pw_core* pw_core_ = nullptr;
-  pw_stream* pw_stream_ = nullptr;
-  pw_thread_loop* pw_main_loop_ = nullptr;
-
-  spa_hook spa_core_listener_ = {};
-  spa_hook spa_stream_listener_ = {};
-
-  pw_core_events pw_core_events_ = {};
-  pw_stream_events pw_stream_events_ = {};
-
-  struct spa_video_info_raw spa_video_format_;
-
-  guint32 pw_stream_node_id_ = 0;
-  gint32 pw_fd_ = -1;
-
-  CaptureSourceType capture_source_type_ =
-      BaseCapturerPipeWire::CaptureSourceType::kAny;
-
-  // <-- end of PipeWire types
-
-  GDBusConnection* connection_ = nullptr;
-  GDBusProxy* proxy_ = nullptr;
-  GCancellable *cancellable_ = nullptr;
-  gchar* portal_handle_ = nullptr;
-  gchar* session_handle_ = nullptr;
-  gchar* sources_handle_ = nullptr;
-  gchar* start_handle_ = nullptr;
-  guint session_request_signal_id_ = 0;
-  guint sources_request_signal_id_ = 0;
-  guint start_request_signal_id_ = 0;
-
-  bool video_metadata_use_ = false;
-  DesktopSize video_size_;
-  DesktopSize desktop_size_ = {};
   DesktopCaptureOptions options_ = {};
-
-  webrtc::Mutex current_frame_lock_;
-  std::unique_ptr<uint8_t[]> current_frame_;
   Callback* callback_ = nullptr;
-
-  bool portal_init_failed_ = false;
-
-  void InitPortal();
-  void InitPipeWire();
-
-  pw_stream* CreateReceivingStream();
-  void HandleBuffer(pw_buffer* buffer);
-
-  void ConvertRGBxToBGRx(uint8_t* frame, uint32_t size);
-
-  static void OnCoreError(void *data,
-                          uint32_t id,
-                          int seq,
-                          int res,
-                          const char *message);
-  static void OnStreamParamChanged(void *data,
-                                   uint32_t id,
-                                   const struct spa_pod *format);
-  static void OnStreamStateChanged(void* data,
-                                   pw_stream_state old_state,
-                                   pw_stream_state state,
-                                   const char* error_message);
-  static void OnStreamProcess(void* data);
-  static void OnNewBuffer(void* data, uint32_t id);
-
-  guint SetupRequestResponseSignal(const gchar* object_path,
-                                   GDBusSignalCallback callback);
-
-  static void OnProxyRequested(GObject* object,
-                               GAsyncResult* result,
-                               gpointer user_data);
-
-  static gchar* PrepareSignalHandle(GDBusConnection* connection,
-                                    const gchar* token);
-
-  void SessionRequest();
-  static void OnSessionRequested(GDBusProxy *proxy,
-                                 GAsyncResult* result,
-                                 gpointer user_data);
-  static void OnSessionRequestResponseSignal(GDBusConnection* connection,
-                                             const gchar* sender_name,
-                                             const gchar* object_path,
-                                             const gchar* interface_name,
-                                             const gchar* signal_name,
-                                             GVariant* parameters,
-                                             gpointer user_data);
-
-  void SourcesRequest();
-  static void OnSourcesRequested(GDBusProxy *proxy,
-                                 GAsyncResult* result,
-                                 gpointer user_data);
-  static void OnSourcesRequestResponseSignal(GDBusConnection* connection,
-                                             const gchar* sender_name,
-                                             const gchar* object_path,
-                                             const gchar* interface_name,
-                                             const gchar* signal_name,
-                                             GVariant* parameters,
-                                             gpointer user_data);
-
-  void StartRequest();
-  static void OnStartRequested(GDBusProxy *proxy,
-                               GAsyncResult* result,
-                               gpointer user_data);
-  static void OnStartRequestResponseSignal(GDBusConnection* connection,
-                                           const gchar* sender_name,
-                                           const gchar* object_path,
-                                           const gchar* interface_name,
-                                           const gchar* signal_name,
-                                           GVariant* parameters,
-                                           gpointer user_data);
-
-  void OpenPipeWireRemote();
-  static void OnOpenPipeWireRemoteRequested(GDBusProxy *proxy,
-                                            GAsyncResult* result,
-                                            gpointer user_data);
-
-  RTC_DISALLOW_COPY_AND_ASSIGN(BaseCapturerPipeWire);
+  bool capturer_failed_ = false;
+  std::unique_ptr<ScreenCastPortal> screencast_portal_;
 };
 
 }  // namespace webrtc
diff --git a/third_party/libwebrtc/modules/desktop_capture/linux/drm.sigs b/third_party/libwebrtc/modules/desktop_capture/linux/drm.sigs
new file mode 100644
index 0000000..226979f
--- /dev/null
+++ b/third_party/libwebrtc/modules/desktop_capture/linux/drm.sigs
@@ -0,0 +1,11 @@
+// Copyright 2021 The WebRTC project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+//------------------------------------------------
+// Functions from DRM used in capturer code.
+//--------
+
+// xf86drm.h
+int drmGetDevices2(uint32_t flags, drmDevicePtr devices[], int max_devices);
+void drmFreeDevices(drmDevicePtr devices[], int count);
diff --git a/third_party/libwebrtc/modules/desktop_capture/linux/egl_dmabuf.cc b/third_party/libwebrtc/modules/desktop_capture/linux/egl_dmabuf.cc
new file mode 100644
index 0000000..de63c2a
--- /dev/null
+++ b/third_party/libwebrtc/modules/desktop_capture/linux/egl_dmabuf.cc
@@ -0,0 +1,695 @@
+/*
+ *  Copyright 2021 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include "modules/desktop_capture/linux/egl_dmabuf.h"
+
+#include <asm/ioctl.h>
+#include <dlfcn.h>
+#include <fcntl.h>
+#include <drm/drm_fourcc.h>
+#include <linux/types.h>
+#include <spa/param/video/format-utils.h>
+#include <unistd.h>
+#include <drm/xf86drm.h>
+
+#include "absl/memory/memory.h"
+#include "absl/types/optional.h"
+#include "rtc_base/checks.h"
+#include "rtc_base/logging.h"
+#include "rtc_base/sanitizer.h"
+#include "rtc_base/string_encode.h"
+
+namespace webrtc {
+
+// EGL
+typedef EGLBoolean (*eglBindAPI_func)(EGLenum api);
+typedef EGLContext (*eglCreateContext_func)(EGLDisplay dpy,
+                                            EGLConfig config,
+                                            EGLContext share_context,
+                                            const EGLint* attrib_list);
+typedef EGLBoolean (*eglDestroyContext_func)(EGLDisplay display,
+                                             EGLContext context);
+typedef EGLBoolean (*eglTerminate_func)(EGLDisplay display);
+typedef EGLImageKHR (*eglCreateImageKHR_func)(EGLDisplay dpy,
+                                              EGLContext ctx,
+                                              EGLenum target,
+                                              EGLClientBuffer buffer,
+                                              const EGLint* attrib_list);
+typedef EGLBoolean (*eglDestroyImageKHR_func)(EGLDisplay dpy,
+                                              EGLImageKHR image);
+typedef EGLint (*eglGetError_func)(void);
+typedef void* (*eglGetProcAddress_func)(const char*);
+typedef EGLDisplay (*eglGetPlatformDisplayEXT_func)(EGLenum platform,
+                                                    void* native_display,
+                                                    const EGLint* attrib_list);
+typedef EGLDisplay (*eglGetPlatformDisplay_func)(EGLenum platform,
+                                                 void* native_display,
+                                                 const EGLAttrib* attrib_list);
+
+typedef EGLBoolean (*eglInitialize_func)(EGLDisplay dpy,
+                                         EGLint* major,
+                                         EGLint* minor);
+typedef EGLBoolean (*eglMakeCurrent_func)(EGLDisplay dpy,
+                                          EGLSurface draw,
+                                          EGLSurface read,
+                                          EGLContext ctx);
+typedef EGLBoolean (*eglQueryDmaBufFormatsEXT_func)(EGLDisplay dpy,
+                                                    EGLint max_formats,
+                                                    EGLint* formats,
+                                                    EGLint* num_formats);
+typedef EGLBoolean (*eglQueryDmaBufModifiersEXT_func)(EGLDisplay dpy,
+                                                      EGLint format,
+                                                      EGLint max_modifiers,
+                                                      EGLuint64KHR* modifiers,
+                                                      EGLBoolean* external_only,
+                                                      EGLint* num_modifiers);
+typedef const char* (*eglQueryString_func)(EGLDisplay dpy, EGLint name);
+typedef void (*glEGLImageTargetTexture2DOES_func)(GLenum target,
+                                                  GLeglImageOES image);
+
+// This doesn't follow naming conventions in WebRTC, where the naming
+// should look like e.g. egl_bind_api instead of EglBindAPI, however
+// we named them according to the exported functions they map to for
+// consistency.
+eglBindAPI_func EglBindAPI = nullptr;
+eglCreateContext_func EglCreateContext = nullptr;
+eglDestroyContext_func EglDestroyContext = nullptr;
+eglTerminate_func EglTerminate = nullptr;
+eglCreateImageKHR_func EglCreateImageKHR = nullptr;
+eglDestroyImageKHR_func EglDestroyImageKHR = nullptr;
+eglGetError_func EglGetError = nullptr;
+eglGetProcAddress_func EglGetProcAddress = nullptr;
+eglGetPlatformDisplayEXT_func EglGetPlatformDisplayEXT = nullptr;
+eglGetPlatformDisplay_func EglGetPlatformDisplay = nullptr;
+eglInitialize_func EglInitialize = nullptr;
+eglMakeCurrent_func EglMakeCurrent = nullptr;
+eglQueryDmaBufFormatsEXT_func EglQueryDmaBufFormatsEXT = nullptr;
+eglQueryDmaBufModifiersEXT_func EglQueryDmaBufModifiersEXT = nullptr;
+eglQueryString_func EglQueryString = nullptr;
+glEGLImageTargetTexture2DOES_func GlEGLImageTargetTexture2DOES = nullptr;
+
+// GL
+typedef void (*glBindTexture_func)(GLenum target, GLuint texture);
+typedef void (*glDeleteTextures_func)(GLsizei n, const GLuint* textures);
+typedef void (*glGenTextures_func)(GLsizei n, GLuint* textures);
+typedef GLenum (*glGetError_func)(void);
+typedef const GLubyte* (*glGetString_func)(GLenum name);
+typedef void (*glGetTexImage_func)(GLenum target,
+                                   GLint level,
+                                   GLenum format,
+                                   GLenum type,
+                                   void* pixels);
+typedef void (*glTexParameteri_func)(GLenum target, GLenum pname, GLint param);
+typedef void* (*glXGetProcAddressARB_func)(const char*);
+
+// This doesn't follow naming conventions in WebRTC, where the naming
+// should look like e.g. egl_bind_api instead of EglBindAPI, however
+// we named them according to the exported functions they map to for
+// consistency.
+glBindTexture_func GlBindTexture = nullptr;
+glDeleteTextures_func GlDeleteTextures = nullptr;
+glGenTextures_func GlGenTextures = nullptr;
+glGetError_func GlGetError = nullptr;
+glGetString_func GlGetString = nullptr;
+glGetTexImage_func GlGetTexImage = nullptr;
+glTexParameteri_func GlTexParameteri = nullptr;
+glXGetProcAddressARB_func GlXGetProcAddressARB = nullptr;
+
+static const std::string FormatGLError(GLenum err) {
+  switch (err) {
+    case GL_NO_ERROR:
+      return "GL_NO_ERROR";
+    case GL_INVALID_ENUM:
+      return "GL_INVALID_ENUM";
+    case GL_INVALID_VALUE:
+      return "GL_INVALID_VALUE";
+    case GL_INVALID_OPERATION:
+      return "GL_INVALID_OPERATION";
+    case GL_STACK_OVERFLOW:
+      return "GL_STACK_OVERFLOW";
+    case GL_STACK_UNDERFLOW:
+      return "GL_STACK_UNDERFLOW";
+    case GL_OUT_OF_MEMORY:
+      return "GL_OUT_OF_MEMORY";
+    default:
+      return "GL error code: " + std::to_string(err);
+  }
+}
+
+static const std::string FormatEGLError(EGLint err) {
+  switch (err) {
+    case EGL_NOT_INITIALIZED:
+      return "EGL_NOT_INITIALIZED";
+    case EGL_BAD_ACCESS:
+      return "EGL_BAD_ACCESS";
+    case EGL_BAD_ALLOC:
+      return "EGL_BAD_ALLOC";
+    case EGL_BAD_ATTRIBUTE:
+      return "EGL_BAD_ATTRIBUTE";
+    case EGL_BAD_CONTEXT:
+      return "EGL_BAD_CONTEXT";
+    case EGL_BAD_CONFIG:
+      return "EGL_BAD_CONFIG";
+    case EGL_BAD_CURRENT_SURFACE:
+      return "EGL_BAD_CURRENT_SURFACE";
+    case EGL_BAD_DISPLAY:
+      return "EGL_BAD_DISPLAY";
+    case EGL_BAD_SURFACE:
+      return "EGL_BAD_SURFACE";
+    case EGL_BAD_MATCH:
+      return "EGL_BAD_MATCH";
+    case EGL_BAD_PARAMETER:
+      return "EGL_BAD_PARAMETER";
+    case EGL_BAD_NATIVE_PIXMAP:
+      return "EGL_BAD_NATIVE_PIXMAP";
+    case EGL_BAD_NATIVE_WINDOW:
+      return "EGL_BAD_NATIVE_WINDOW";
+    case EGL_CONTEXT_LOST:
+      return "EGL_CONTEXT_LOST";
+    default:
+      return "EGL error code: " + std::to_string(err);
+  }
+}
+
+static uint32_t SpaPixelFormatToDrmFormat(uint32_t spa_format) {
+  switch (spa_format) {
+    case SPA_VIDEO_FORMAT_RGBA:
+      return DRM_FORMAT_ABGR8888;
+    case SPA_VIDEO_FORMAT_RGBx:
+      return DRM_FORMAT_XBGR8888;
+    case SPA_VIDEO_FORMAT_BGRA:
+      return DRM_FORMAT_ARGB8888;
+    case SPA_VIDEO_FORMAT_BGRx:
+      return DRM_FORMAT_XRGB8888;
+    default:
+      return DRM_FORMAT_INVALID;
+  }
+}
+
+static void CloseLibrary(void* library) {
+  if (library) {
+    dlclose(library);
+    library = nullptr;
+  }
+}
+
+static void* g_lib_egl = nullptr;
+
+static bool OpenEGL() {
+  g_lib_egl = dlopen("libEGL.so.1", RTLD_NOW | RTLD_GLOBAL);
+  if (g_lib_egl) {
+    EglGetProcAddress =
+        (eglGetProcAddress_func)dlsym(g_lib_egl, "eglGetProcAddress");
+    return EglGetProcAddress;
+  }
+
+  return false;
+}
+
+static bool LoadEGL() {
+  if (OpenEGL()) {
+    EglBindAPI = (eglBindAPI_func)EglGetProcAddress("eglBindAPI");
+    EglCreateContext =
+        (eglCreateContext_func)EglGetProcAddress("eglCreateContext");
+    EglDestroyContext =
+        (eglDestroyContext_func)EglGetProcAddress("eglDestroyContext");
+    EglTerminate = (eglTerminate_func)EglGetProcAddress("eglTerminate");
+    EglCreateImageKHR =
+        (eglCreateImageKHR_func)EglGetProcAddress("eglCreateImageKHR");
+    EglDestroyImageKHR =
+        (eglDestroyImageKHR_func)EglGetProcAddress("eglDestroyImageKHR");
+    EglGetError = (eglGetError_func)EglGetProcAddress("eglGetError");
+    EglGetPlatformDisplayEXT = (eglGetPlatformDisplayEXT_func)EglGetProcAddress(
+        "eglGetPlatformDisplayEXT");
+    EglGetPlatformDisplay =
+        (eglGetPlatformDisplay_func)EglGetProcAddress("eglGetPlatformDisplay");
+    EglInitialize = (eglInitialize_func)EglGetProcAddress("eglInitialize");
+    EglMakeCurrent = (eglMakeCurrent_func)EglGetProcAddress("eglMakeCurrent");
+    EglQueryString = (eglQueryString_func)EglGetProcAddress("eglQueryString");
+    GlEGLImageTargetTexture2DOES =
+        (glEGLImageTargetTexture2DOES_func)EglGetProcAddress(
+            "glEGLImageTargetTexture2DOES");
+
+    return EglBindAPI && EglCreateContext && EglCreateImageKHR &&
+           EglTerminate && EglDestroyContext && EglDestroyImageKHR &&
+           EglGetError && EglGetPlatformDisplayEXT && EglGetPlatformDisplay &&
+           EglInitialize && EglMakeCurrent && EglQueryString &&
+           GlEGLImageTargetTexture2DOES;
+  }
+
+  return false;
+}
+
+static void* g_lib_gl = nullptr;
+
+static bool OpenGL() {
+  std::vector<std::string> names = {"libGL.so.1", "libGL.so"};
+  for (const std::string& name : names) {
+    g_lib_gl = dlopen(name.c_str(), RTLD_NOW | RTLD_GLOBAL);
+    if (g_lib_gl) {
+      GlXGetProcAddressARB =
+          (glXGetProcAddressARB_func)dlsym(g_lib_gl, "glXGetProcAddressARB");
+      return GlXGetProcAddressARB;
+    }
+  }
+
+  return false;
+}
+
+static bool LoadGL() {
+  if (OpenGL()) {
+    GlGetString = (glGetString_func)GlXGetProcAddressARB("glGetString");
+    if (!GlGetString) {
+      return false;
+    }
+
+    GlBindTexture = (glBindTexture_func)GlXGetProcAddressARB("glBindTexture");
+    GlDeleteTextures =
+        (glDeleteTextures_func)GlXGetProcAddressARB("glDeleteTextures");
+    GlGenTextures = (glGenTextures_func)GlXGetProcAddressARB("glGenTextures");
+    GlGetError = (glGetError_func)GlXGetProcAddressARB("glGetError");
+    GlGetTexImage = (glGetTexImage_func)GlXGetProcAddressARB("glGetTexImage");
+    GlTexParameteri =
+        (glTexParameteri_func)GlXGetProcAddressARB("glTexParameteri");
+
+    return GlBindTexture && GlDeleteTextures && GlGenTextures && GlGetError &&
+           GlGetTexImage && GlTexParameteri;
+  }
+
+  return false;
+}
+
+EglDmaBuf::EglDmaBuf() {
+  if (!LoadEGL()) {
+    RTC_LOG(LS_ERROR) << "Unable to load EGL entry functions.";
+    CloseLibrary(g_lib_egl);
+    return;
+  }
+
+  if (!LoadGL()) {
+    RTC_LOG(LS_ERROR) << "Failed to load OpenGL entry functions.";
+    CloseLibrary(g_lib_gl);
+    return;
+  }
+
+  if (!GetClientExtensions(EGL_NO_DISPLAY, EGL_EXTENSIONS)) {
+    return;
+  }
+
+  bool has_platform_base_ext = false;
+  bool has_platform_gbm_ext = false;
+  bool has_khr_platform_gbm_ext = false;
+
+  for (const auto& extension : egl_.extensions) {
+    if (extension == "EGL_EXT_platform_base") {
+      has_platform_base_ext = true;
+      continue;
+    } else if (extension == "EGL_MESA_platform_gbm") {
+      has_platform_gbm_ext = true;
+      continue;
+    } else if (extension == "EGL_KHR_platform_gbm") {
+      has_khr_platform_gbm_ext = true;
+      continue;
+    }
+  }
+
+  if (!has_platform_base_ext || !has_platform_gbm_ext ||
+      !has_khr_platform_gbm_ext) {
+    RTC_LOG(LS_ERROR) << "One of required EGL extensions is missing";
+    return;
+  }
+
+  egl_.display = EglGetPlatformDisplay(EGL_PLATFORM_WAYLAND_KHR,
+                                       (void*)EGL_DEFAULT_DISPLAY, nullptr);
+
+  if (egl_.display == EGL_NO_DISPLAY) {
+    RTC_LOG(LS_ERROR) << "Failed to obtain default EGL display: "
+                      << FormatEGLError(EglGetError()) << "\n"
+                      << "Defaulting to using first available render node";
+    absl::optional<std::string> render_node = GetRenderNode();
+    if (!render_node) {
+      return;
+    }
+
+    drm_fd_ = open(render_node->c_str(), O_RDWR);
+
+    if (drm_fd_ < 0) {
+      RTC_LOG(LS_ERROR) << "Failed to open drm render node: "
+                        << strerror(errno);
+      return;
+    }
+
+    gbm_device_ = gbm_create_device(drm_fd_);
+
+    if (!gbm_device_) {
+      RTC_LOG(LS_ERROR) << "Cannot create GBM device: " << strerror(errno);
+      close(drm_fd_);
+      return;
+    }
+
+    // Use eglGetPlatformDisplayEXT() to get the display pointer
+    // if the implementation supports it.
+    egl_.display =
+        EglGetPlatformDisplayEXT(EGL_PLATFORM_GBM_KHR, gbm_device_, nullptr);
+  }
+
+  if (egl_.display == EGL_NO_DISPLAY) {
+    RTC_LOG(LS_ERROR) << "Error during obtaining EGL display: "
+                      << FormatEGLError(EglGetError());
+    return;
+  }
+
+  EGLint major, minor;
+  if (EglInitialize(egl_.display, &major, &minor) == EGL_FALSE) {
+    RTC_LOG(LS_ERROR) << "Error during eglInitialize: "
+                      << FormatEGLError(EglGetError());
+    return;
+  }
+
+  if (EglBindAPI(EGL_OPENGL_API) == EGL_FALSE) {
+    RTC_LOG(LS_ERROR) << "bind OpenGL API failed";
+    return;
+  }
+
+  egl_.context =
+      EglCreateContext(egl_.display, nullptr, EGL_NO_CONTEXT, nullptr);
+
+  if (egl_.context == EGL_NO_CONTEXT) {
+    RTC_LOG(LS_ERROR) << "Couldn't create EGL context: "
+                      << FormatGLError(EglGetError());
+    return;
+  }
+
+  if (!GetClientExtensions(egl_.display, EGL_EXTENSIONS)) {
+    return;
+  }
+
+  bool has_image_dma_buf_import_modifiers_ext = false;
+
+  for (const auto& extension : egl_.extensions) {
+    if (extension == "EGL_EXT_image_dma_buf_import") {
+      has_image_dma_buf_import_ext_ = true;
+      continue;
+    } else if (extension == "EGL_EXT_image_dma_buf_import_modifiers") {
+      has_image_dma_buf_import_modifiers_ext = true;
+      continue;
+    }
+  }
+
+  if (has_image_dma_buf_import_ext_ && has_image_dma_buf_import_modifiers_ext) {
+    EglQueryDmaBufFormatsEXT = (eglQueryDmaBufFormatsEXT_func)EglGetProcAddress(
+        "eglQueryDmaBufFormatsEXT");
+    EglQueryDmaBufModifiersEXT =
+        (eglQueryDmaBufModifiersEXT_func)EglGetProcAddress(
+            "eglQueryDmaBufModifiersEXT");
+  }
+
+  RTC_LOG(LS_INFO) << "Egl initialization succeeded";
+  egl_initialized_ = true;
+}
+
+EglDmaBuf::~EglDmaBuf() {
+  if (gbm_device_) {
+    gbm_device_destroy(gbm_device_);
+    close(drm_fd_);
+  }
+
+  if (egl_.context != EGL_NO_CONTEXT) {
+    EglDestroyContext(egl_.display, egl_.context);
+  }
+
+  if (egl_.display != EGL_NO_DISPLAY) {
+    EglTerminate(egl_.display);
+  }
+
+  // BUG: crbug.com/1290566
+  // Closing libEGL.so.1 when using NVidia drivers causes a crash
+  // when EglGetPlatformDisplayEXT() is used, at least this one is enough
+  // to be called to make it crash.
+  // It also looks that libepoxy and glad don't dlclose it either
+  // CloseLibrary(g_lib_egl);
+  // CloseLibrary(g_lib_gl);
+}
+
+bool EglDmaBuf::GetClientExtensions(EGLDisplay dpy, EGLint name) {
+  // Get the list of client extensions
+  const char* client_extensions_cstring = EglQueryString(dpy, name);
+  if (!client_extensions_cstring) {
+    // If eglQueryString() returned NULL, the implementation doesn't support
+    // EGL_EXT_client_extensions. Expect an EGL_BAD_DISPLAY error.
+    RTC_LOG(LS_ERROR) << "No client extensions defined! "
+                      << FormatEGLError(EglGetError());
+    return false;
+  }
+
+  std::vector<std::string> client_extensions;
+  rtc::split(client_extensions_cstring, ' ',
+             &client_extensions);
+  for (const auto& extension : client_extensions) {
+    egl_.extensions.push_back(extension);
+  }
+
+  return true;
+}
+
+std::unique_ptr<uint8_t[]> EglDmaBuf::ImageFromDmaBuf(
+    const DesktopSize& size,
+    uint32_t format,
+    const std::vector<PlaneData>& plane_datas,
+    uint64_t modifier) {
+  std::unique_ptr<uint8_t[]> src;
+
+  if (!egl_initialized_) {
+    return src;
+  }
+
+  if (plane_datas.size() <= 0) {
+    RTC_LOG(LS_ERROR) << "Failed to process buffer: invalid number of planes";
+    return src;
+  }
+
+  EGLint attribs[47];
+  int atti = 0;
+
+  attribs[atti++] = EGL_WIDTH;
+  attribs[atti++] = static_cast<EGLint>(size.width());
+  attribs[atti++] = EGL_HEIGHT;
+  attribs[atti++] = static_cast<EGLint>(size.height());
+  attribs[atti++] = EGL_LINUX_DRM_FOURCC_EXT;
+  attribs[atti++] = SpaPixelFormatToDrmFormat(format);
+
+  if (plane_datas.size() > 0) {
+    attribs[atti++] = EGL_DMA_BUF_PLANE0_FD_EXT;
+    attribs[atti++] = plane_datas[0].fd;
+    attribs[atti++] = EGL_DMA_BUF_PLANE0_OFFSET_EXT;
+    attribs[atti++] = plane_datas[0].offset;
+    attribs[atti++] = EGL_DMA_BUF_PLANE0_PITCH_EXT;
+    attribs[atti++] = plane_datas[0].stride;
+
+    if (modifier != DRM_FORMAT_MOD_INVALID) {
+      attribs[atti++] = EGL_DMA_BUF_PLANE0_MODIFIER_LO_EXT;
+      attribs[atti++] = modifier & 0xFFFFFFFF;
+      attribs[atti++] = EGL_DMA_BUF_PLANE0_MODIFIER_HI_EXT;
+      attribs[atti++] = modifier >> 32;
+    }
+  }
+
+  if (plane_datas.size() > 1) {
+    attribs[atti++] = EGL_DMA_BUF_PLANE1_FD_EXT;
+    attribs[atti++] = plane_datas[1].fd;
+    attribs[atti++] = EGL_DMA_BUF_PLANE1_OFFSET_EXT;
+    attribs[atti++] = plane_datas[1].offset;
+    attribs[atti++] = EGL_DMA_BUF_PLANE1_PITCH_EXT;
+    attribs[atti++] = plane_datas[1].stride;
+
+    if (modifier != DRM_FORMAT_MOD_INVALID) {
+      attribs[atti++] = EGL_DMA_BUF_PLANE1_MODIFIER_LO_EXT;
+      attribs[atti++] = modifier & 0xFFFFFFFF;
+      attribs[atti++] = EGL_DMA_BUF_PLANE1_MODIFIER_HI_EXT;
+      attribs[atti++] = modifier >> 32;
+    }
+  }
+
+  if (plane_datas.size() > 2) {
+    attribs[atti++] = EGL_DMA_BUF_PLANE2_FD_EXT;
+    attribs[atti++] = plane_datas[2].fd;
+    attribs[atti++] = EGL_DMA_BUF_PLANE2_OFFSET_EXT;
+    attribs[atti++] = plane_datas[2].offset;
+    attribs[atti++] = EGL_DMA_BUF_PLANE2_PITCH_EXT;
+    attribs[atti++] = plane_datas[2].stride;
+
+    if (modifier != DRM_FORMAT_MOD_INVALID) {
+      attribs[atti++] = EGL_DMA_BUF_PLANE2_MODIFIER_LO_EXT;
+      attribs[atti++] = modifier & 0xFFFFFFFF;
+      attribs[atti++] = EGL_DMA_BUF_PLANE2_MODIFIER_HI_EXT;
+      attribs[atti++] = modifier >> 32;
+    }
+  }
+
+  if (plane_datas.size() > 3) {
+    attribs[atti++] = EGL_DMA_BUF_PLANE3_FD_EXT;
+    attribs[atti++] = plane_datas[3].fd;
+    attribs[atti++] = EGL_DMA_BUF_PLANE3_OFFSET_EXT;
+    attribs[atti++] = plane_datas[3].offset;
+    attribs[atti++] = EGL_DMA_BUF_PLANE3_PITCH_EXT;
+    attribs[atti++] = plane_datas[3].stride;
+
+    if (modifier != DRM_FORMAT_MOD_INVALID) {
+      attribs[atti++] = EGL_DMA_BUF_PLANE3_MODIFIER_LO_EXT;
+      attribs[atti++] = modifier & 0xFFFFFFFF;
+      attribs[atti++] = EGL_DMA_BUF_PLANE3_MODIFIER_HI_EXT;
+      attribs[atti++] = modifier >> 32;
+    }
+  }
+
+  attribs[atti++] = EGL_NONE;
+
+  // bind context to render thread
+  EglMakeCurrent(egl_.display, EGL_NO_SURFACE, EGL_NO_SURFACE, egl_.context);
+
+  // create EGL image from attribute list
+  EGLImageKHR image = EglCreateImageKHR(
+      egl_.display, EGL_NO_CONTEXT, EGL_LINUX_DMA_BUF_EXT, nullptr, attribs);
+
+  if (image == EGL_NO_IMAGE) {
+    RTC_LOG(LS_ERROR) << "Failed to record frame: Error creating EGLImage - "
+                      << FormatEGLError(EglGetError());
+    return src;
+  }
+
+  // create GL 2D texture for framebuffer
+  GLuint texture;
+  GlGenTextures(1, &texture);
+  GlTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+  GlTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+  GlTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+  GlTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+  GlBindTexture(GL_TEXTURE_2D, texture);
+  GlEGLImageTargetTexture2DOES(GL_TEXTURE_2D, image);
+
+  src = std::make_unique<uint8_t[]>(plane_datas[0].stride * size.height());
+
+  GLenum gl_format = GL_BGRA;
+  switch (format) {
+    case SPA_VIDEO_FORMAT_RGBx:
+      gl_format = GL_RGBA;
+      break;
+    case SPA_VIDEO_FORMAT_RGBA:
+      gl_format = GL_RGBA;
+      break;
+    case SPA_VIDEO_FORMAT_BGRx:
+      gl_format = GL_BGRA;
+      break;
+    default:
+      gl_format = GL_BGRA;
+      break;
+  }
+  GlGetTexImage(GL_TEXTURE_2D, 0, gl_format, GL_UNSIGNED_BYTE, src.get());
+
+  if (GlGetError()) {
+    RTC_LOG(LS_ERROR) << "Failed to get image from DMA buffer.";
+    return src;
+  }
+
+  GlDeleteTextures(1, &texture);
+  EglDestroyImageKHR(egl_.display, image);
+
+  return src;
+}
+
+std::vector<uint64_t> EglDmaBuf::QueryDmaBufModifiers(uint32_t format) {
+  if (!egl_initialized_) {
+    return {};
+  }
+
+  // Explicit modifiers not supported, return just DRM_FORMAT_MOD_INVALID as we
+  // can still use modifier-less DMA-BUFs if we have required extension
+  if (EglQueryDmaBufFormatsEXT == nullptr ||
+      EglQueryDmaBufModifiersEXT == nullptr) {
+    return has_image_dma_buf_import_ext_
+               ? std::vector<uint64_t>{DRM_FORMAT_MOD_INVALID}
+               : std::vector<uint64_t>{};
+  }
+
+  uint32_t drm_format = SpaPixelFormatToDrmFormat(format);
+  // Should never happen as it's us who controls the list of supported formats
+  RTC_DCHECK(drm_format != DRM_FORMAT_INVALID);
+
+  EGLint count = 0;
+  EGLBoolean success =
+      EglQueryDmaBufFormatsEXT(egl_.display, 0, nullptr, &count);
+
+  if (!success || !count) {
+    RTC_LOG(LS_ERROR) << "Failed to query DMA-BUF formats.";
+    return {DRM_FORMAT_MOD_INVALID};
+  }
+
+  std::vector<uint32_t> formats(count);
+  if (!EglQueryDmaBufFormatsEXT(egl_.display, count,
+                                reinterpret_cast<EGLint*>(formats.data()),
+                                &count)) {
+    RTC_LOG(LS_ERROR) << "Failed to query DMA-BUF formats.";
+    return {DRM_FORMAT_MOD_INVALID};
+  }
+
+  if (std::find(formats.begin(), formats.end(), drm_format) == formats.end()) {
+    RTC_LOG(LS_ERROR) << "Format " << drm_format
+                      << " not supported for modifiers.";
+    return {DRM_FORMAT_MOD_INVALID};
+  }
+
+  success = EglQueryDmaBufModifiersEXT(egl_.display, drm_format, 0, nullptr,
+                                       nullptr, &count);
+
+  if (!success || !count) {
+    RTC_LOG(LS_ERROR) << "Failed to query DMA-BUF modifiers.";
+    return {DRM_FORMAT_MOD_INVALID};
+  }
+
+  std::vector<uint64_t> modifiers(count);
+  if (!EglQueryDmaBufModifiersEXT(egl_.display, drm_format, count,
+                                  modifiers.data(), nullptr, &count)) {
+    RTC_LOG(LS_ERROR) << "Failed to query DMA-BUF modifiers.";
+  }
+
+  // Support modifier-less buffers
+  modifiers.push_back(DRM_FORMAT_MOD_INVALID);
+  return modifiers;
+}
+
+absl::optional<std::string> EglDmaBuf::GetRenderNode() {
+  int max_devices = drmGetDevices2(0, nullptr, 0);
+  if (max_devices <= 0) {
+    RTC_LOG(LS_ERROR) << "drmGetDevices2() has not found any devices (errno="
+                      << -max_devices << ")";
+    return absl::nullopt;
+  }
+
+  std::vector<drmDevicePtr> devices(max_devices);
+  int ret = drmGetDevices2(0, devices.data(), max_devices);
+  if (ret < 0) {
+    RTC_LOG(LS_ERROR) << "drmGetDevices2() returned an error " << ret;
+    return absl::nullopt;
+  }
+
+  std::string render_node;
+
+  for (const drmDevicePtr& device : devices) {
+    if (device->available_nodes & (1 << DRM_NODE_RENDER)) {
+      render_node = device->nodes[DRM_NODE_RENDER];
+      break;
+    }
+  }
+
+  drmFreeDevices(devices.data(), ret);
+  return render_node;
+}
+
+}  // namespace webrtc
diff --git a/third_party/libwebrtc/modules/desktop_capture/linux/egl_dmabuf.h b/third_party/libwebrtc/modules/desktop_capture/linux/egl_dmabuf.h
new file mode 100644
index 0000000..b755d8b
--- /dev/null
+++ b/third_party/libwebrtc/modules/desktop_capture/linux/egl_dmabuf.h
@@ -0,0 +1,68 @@
+/*
+ *  Copyright 2021 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#ifndef MODULES_DESKTOP_CAPTURE_LINUX_EGL_DMABUF_H_
+#define MODULES_DESKTOP_CAPTURE_LINUX_EGL_DMABUF_H_
+
+#include <epoxy/egl.h>
+#include <epoxy/gl.h>
+#include <gbm/gbm.h>
+
+#include <memory>
+#include <string>
+#include <vector>
+
+#include "absl/types/optional.h"
+#include "modules/desktop_capture/desktop_geometry.h"
+
+namespace webrtc {
+
+class EglDmaBuf {
+ public:
+  struct EGLStruct {
+    std::vector<std::string> extensions;
+    EGLDisplay display = EGL_NO_DISPLAY;
+    EGLContext context = EGL_NO_CONTEXT;
+  };
+
+  struct PlaneData {
+    int32_t fd;
+    uint32_t stride;
+    uint32_t offset;
+  };
+
+  EglDmaBuf();
+  ~EglDmaBuf();
+
+  std::unique_ptr<uint8_t[]> ImageFromDmaBuf(
+      const DesktopSize& size,
+      uint32_t format,
+      const std::vector<PlaneData>& plane_datas,
+      uint64_t modifiers);
+  std::vector<uint64_t> QueryDmaBufModifiers(uint32_t format);
+
+  bool IsEglInitialized() const { return egl_initialized_; }
+
+ private:
+  bool GetClientExtensions(EGLDisplay dpy, EGLint name);
+
+  bool egl_initialized_ = false;
+  bool has_image_dma_buf_import_ext_ = false;
+  int32_t drm_fd_ = -1;               // for GBM buffer mmap
+  gbm_device* gbm_device_ = nullptr;  // for passed GBM buffer retrieval
+
+  EGLStruct egl_;
+
+  absl::optional<std::string> GetRenderNode();
+};
+
+}  // namespace webrtc
+
+#endif  // MODULES_DESKTOP_CAPTURE_LINUX_EGL_DMABUF_H_
diff --git a/third_party/libwebrtc/modules/desktop_capture/linux/mouse_cursor_monitor_pipewire.cc b/third_party/libwebrtc/modules/desktop_capture/linux/mouse_cursor_monitor_pipewire.cc
new file mode 100644
index 0000000..09dea24
--- /dev/null
+++ b/third_party/libwebrtc/modules/desktop_capture/linux/mouse_cursor_monitor_pipewire.cc
@@ -0,0 +1,56 @@
+/*
+ *  Copyright (c) 2022 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include "modules/desktop_capture/linux/mouse_cursor_monitor_pipewire.h"
+
+#include <utility>
+
+#include "modules/desktop_capture/desktop_capture_options.h"
+#include "modules/desktop_capture/desktop_capturer.h"
+#include "rtc_base/checks.h"
+#include "rtc_base/logging.h"
+
+namespace webrtc {
+
+MouseCursorMonitorPipeWire::MouseCursorMonitorPipeWire(
+    const DesktopCaptureOptions& options)
+    : options_(options) {
+}
+
+MouseCursorMonitorPipeWire::~MouseCursorMonitorPipeWire() {}
+
+void MouseCursorMonitorPipeWire::Init(Callback* callback, Mode mode) {
+  RTC_DCHECK(!callback_);
+  RTC_DCHECK(callback);
+
+  callback_ = callback;
+  mode_ = mode;
+}
+
+void MouseCursorMonitorPipeWire::Capture() {
+  RTC_DCHECK(callback_);
+
+  std::unique_ptr<MouseCursor> mouse_cursor =
+      options_.screencast_stream()->CaptureCursor();
+
+  if (mouse_cursor && mouse_cursor->image()->data()) {
+    callback_->OnMouseCursor(mouse_cursor.release());
+  }
+
+  if (mode_ == SHAPE_AND_POSITION) {
+    absl::optional<DesktopVector> mouse_cursor_position =
+        options_.screencast_stream()->CaptureCursorPosition();
+    if (mouse_cursor_position) {
+      callback_->OnMouseCursorPosition(mouse_cursor_position.value());
+    }
+  }
+}
+
+}  // namespace webrtc
diff --git a/third_party/libwebrtc/modules/desktop_capture/linux/mouse_cursor_monitor_pipewire.h b/third_party/libwebrtc/modules/desktop_capture/linux/mouse_cursor_monitor_pipewire.h
new file mode 100644
index 0000000..9b9ccf7
--- /dev/null
+++ b/third_party/libwebrtc/modules/desktop_capture/linux/mouse_cursor_monitor_pipewire.h
@@ -0,0 +1,41 @@
+/*
+ *  Copyright 2022 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#ifndef MODULES_DESKTOP_CAPTURE_LINUX_MOUSE_CURSOR_MONITOR_PIPEWIRE_H_
+#define MODULES_DESKTOP_CAPTURE_LINUX_MOUSE_CURSOR_MONITOR_PIPEWIRE_H_
+
+#include <memory>
+
+#include "api/scoped_refptr.h"
+#include "modules/desktop_capture/desktop_capture_options.h"
+#include "modules/desktop_capture/desktop_capture_types.h"
+#include "modules/desktop_capture/linux/shared_screencast_stream.h"
+#include "modules/desktop_capture/mouse_cursor.h"
+#include "modules/desktop_capture/mouse_cursor_monitor.h"
+
+namespace webrtc {
+
+class MouseCursorMonitorPipeWire : public MouseCursorMonitor {
+ public:
+  explicit MouseCursorMonitorPipeWire(const DesktopCaptureOptions& options);
+  ~MouseCursorMonitorPipeWire() override;
+
+  // MouseCursorMonitor:
+  void Init(Callback* callback, Mode mode) override;
+  void Capture() override;
+
+  DesktopCaptureOptions options_;
+  Callback* callback_ = nullptr;
+  Mode mode_ = SHAPE_AND_POSITION;
+};
+
+}  // namespace webrtc
+
+#endif  // MODULES_DESKTOP_CAPTURE_LINUX_MOUSE_CURSOR_MONITOR_PIPEWIRE_H_
diff --git a/third_party/libwebrtc/modules/desktop_capture/linux/pipewire.sigs b/third_party/libwebrtc/modules/desktop_capture/linux/pipewire.sigs
index 3e21e9d..06a97b8 100644
--- a/third_party/libwebrtc/modules/desktop_capture/linux/pipewire.sigs
+++ b/third_party/libwebrtc/modules/desktop_capture/linux/pipewire.sigs
@@ -7,38 +7,44 @@
 //------------------------------------------------
 
 // core.h
-void pw_core_destroy(pw_core *core);
-pw_type *pw_core_get_type(pw_core *core);
-pw_core * pw_core_new(pw_loop *main_loop, pw_properties *props);
+int pw_core_disconnect(pw_core *core);
 
 // loop.h
 void pw_loop_destroy(pw_loop *loop);
-pw_loop * pw_loop_new(pw_properties *properties);
+pw_loop * pw_loop_new(const spa_dict *props);
+
 
 // pipewire.h
 void pw_init(int *argc, char **argv[]);
+const char* pw_get_library_version();
 
 // properties.h
 pw_properties * pw_properties_new_string(const char *args);
 
-// remote.h
-void pw_remote_add_listener(pw_remote *remote, spa_hook *listener, const pw_remote_events *events, void *data);
-int pw_remote_connect_fd(pw_remote *remote, int fd);
-void pw_remote_destroy(pw_remote *remote);
-pw_remote * pw_remote_new(pw_core *core, pw_properties *properties, size_t user_data_size);
-
 // stream.h
 void pw_stream_add_listener(pw_stream *stream, spa_hook *listener, const pw_stream_events *events, void *data);
-int pw_stream_connect(pw_stream *stream, enum pw_direction direction, const char *port_path, enum pw_stream_flags flags, const spa_pod **params, uint32_t n_params);
+int pw_stream_connect(pw_stream *stream, enum pw_direction direction, uint32_t target_id, enum pw_stream_flags flags, const spa_pod **params, uint32_t n_params);
+int pw_stream_disconnect(pw_stream *stream);
 pw_buffer *pw_stream_dequeue_buffer(pw_stream *stream);
 void pw_stream_destroy(pw_stream *stream);
-void pw_stream_finish_format(pw_stream *stream, int res, const spa_pod **params, uint32_t n_params);
-pw_stream * pw_stream_new(pw_remote *remote, const char *name, pw_properties *props);
+pw_stream * pw_stream_new(pw_core *core, const char *name, pw_properties *props);
 int pw_stream_queue_buffer(pw_stream *stream, pw_buffer *buffer);
 int pw_stream_set_active(pw_stream *stream, bool active);
+int pw_stream_update_params(pw_stream *stream, const spa_pod **params, uint32_t n_params);
 
 // thread-loop.h
 void pw_thread_loop_destroy(pw_thread_loop *loop);
-pw_thread_loop * pw_thread_loop_new(pw_loop *loop, const char *name);
+pw_thread_loop * pw_thread_loop_new(const char *name, const spa_dict *props);
 int pw_thread_loop_start(pw_thread_loop *loop);
 void pw_thread_loop_stop(pw_thread_loop *loop);
+void pw_thread_loop_lock(pw_thread_loop *loop);
+void pw_thread_loop_unlock(pw_thread_loop *loop);
+pw_loop * pw_thread_loop_get_loop(pw_thread_loop *loop);
+void pw_thread_loop_signal(pw_thread_loop *loop, bool wait_for_accept);
+void pw_thread_loop_wait(pw_thread_loop *loop);
+
+// context.h
+void pw_context_destroy(pw_context *context);
+pw_context *pw_context_new(pw_loop *main_loop, pw_properties *props, size_t user_data_size);
+pw_core * pw_context_connect(pw_context *context, pw_properties *properties, size_t user_data_size);
+pw_core * pw_context_connect_fd(pw_context *context, int fd, pw_properties *properties, size_t user_data_size);
diff --git a/third_party/libwebrtc/modules/desktop_capture/linux/pipewire_stub_header.fragment b/third_party/libwebrtc/modules/desktop_capture/linux/pipewire_stub_header.fragment
index 9d7dbd2..06ae18d 100644
--- a/third_party/libwebrtc/modules/desktop_capture/linux/pipewire_stub_header.fragment
+++ b/third_party/libwebrtc/modules/desktop_capture/linux/pipewire_stub_header.fragment
@@ -5,4 +5,5 @@ extern "C" {
 
 #include <pipewire/pipewire.h>
 
+#include <xf86drm.h>
 }
diff --git a/third_party/libwebrtc/modules/desktop_capture/linux/scoped_glib.cc b/third_party/libwebrtc/modules/desktop_capture/linux/scoped_glib.cc
new file mode 100644
index 0000000..51ca57a
--- /dev/null
+++ b/third_party/libwebrtc/modules/desktop_capture/linux/scoped_glib.cc
@@ -0,0 +1,57 @@
+/*
+ *  Copyright 2022 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include "modules/desktop_capture/linux/scoped_glib.h"
+
+namespace webrtc {
+
+template <>
+Scoped<GError>::~Scoped() {
+  if (ptr_) {
+    g_error_free(ptr_);
+  }
+}
+
+template <>
+Scoped<char>::~Scoped() {
+  if (ptr_) {
+    g_free(ptr_);
+  }
+}
+
+template <>
+Scoped<GVariant>::~Scoped() {
+  if (ptr_) {
+    g_variant_unref(ptr_);
+  }
+}
+
+template <>
+Scoped<GVariantIter>::~Scoped() {
+  if (ptr_) {
+    g_variant_iter_free(ptr_);
+  }
+}
+
+template <>
+Scoped<GDBusMessage>::~Scoped() {
+  if (ptr_) {
+    g_object_unref(ptr_);
+  }
+}
+
+template <>
+Scoped<GUnixFDList>::~Scoped() {
+  if (ptr_) {
+    g_object_unref(ptr_);
+  }
+}
+
+}  // namespace webrtc
diff --git a/third_party/libwebrtc/modules/desktop_capture/linux/scoped_glib.h b/third_party/libwebrtc/modules/desktop_capture/linux/scoped_glib.h
new file mode 100644
index 0000000..bf77855
--- /dev/null
+++ b/third_party/libwebrtc/modules/desktop_capture/linux/scoped_glib.h
@@ -0,0 +1,65 @@
+/*
+ *  Copyright 2022 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#ifndef MODULES_DESKTOP_CAPTURE_LINUX_SCOPED_GLIB_H_
+#define MODULES_DESKTOP_CAPTURE_LINUX_SCOPED_GLIB_H_
+
+#include <gio/gio.h>
+
+#include "rtc_base/checks.h"
+
+namespace webrtc {
+
+template <class T>
+class Scoped {
+ public:
+  Scoped() {}
+  explicit Scoped(T* val) { ptr_ = val; }
+  ~Scoped() { RTC_DCHECK_NOTREACHED(); }
+
+  T* operator->() const { return ptr_; }
+
+  explicit operator bool() const { return ptr_ != nullptr; }
+
+  bool operator!() const { return ptr_ == nullptr; }
+
+  T* get() const { return ptr_; }
+
+  T** receive() {
+    RTC_CHECK(!ptr_);
+    return &ptr_;
+  }
+
+  Scoped& operator=(T* val) {
+    RTC_DCHECK(val);
+    ptr_ = val;
+    return *this;
+  }
+
+ protected:
+  T* ptr_ = nullptr;
+};
+
+template <>
+Scoped<GError>::~Scoped();
+template <>
+Scoped<char>::~Scoped();
+template <>
+Scoped<GVariant>::~Scoped();
+template <>
+Scoped<GVariantIter>::~Scoped();
+template <>
+Scoped<GDBusMessage>::~Scoped();
+template <>
+Scoped<GUnixFDList>::~Scoped();
+
+}  // namespace webrtc
+
+#endif  // MODULES_DESKTOP_CAPTURE_LINUX_SCOPED_GLIB_H_
diff --git a/third_party/libwebrtc/modules/desktop_capture/linux/screen_capturer_pipewire.cc b/third_party/libwebrtc/modules/desktop_capture/linux/screen_capturer_pipewire.cc
deleted file mode 100644
index 3813d69..0000000
--- a/third_party/libwebrtc/modules/desktop_capture/linux/screen_capturer_pipewire.cc
+++ /dev/null
@@ -1,28 +0,0 @@
-/*
- *  Copyright 2018 The WebRTC project authors. All Rights Reserved.
- *
- *  Use of this source code is governed by a BSD-style license
- *  that can be found in the LICENSE file in the root of the source
- *  tree. An additional intellectual property rights grant can be found
- *  in the file PATENTS.  All contributing project authors may
- *  be found in the AUTHORS file in the root of the source tree.
- */
-
-#include "modules/desktop_capture/linux/screen_capturer_pipewire.h"
-
-#include <memory>
-
-namespace webrtc {
-
-ScreenCapturerPipeWire::ScreenCapturerPipeWire()
-    : BaseCapturerPipeWire(BaseCapturerPipeWire::CaptureSourceType::kScreen) {}
-ScreenCapturerPipeWire::~ScreenCapturerPipeWire() {}
-
-// static
-std::unique_ptr<DesktopCapturer>
-ScreenCapturerPipeWire::CreateRawScreenCapturer(
-    const DesktopCaptureOptions& options) {
-  return std::make_unique<ScreenCapturerPipeWire>();
-}
-
-}  // namespace webrtc
diff --git a/third_party/libwebrtc/modules/desktop_capture/linux/screen_capturer_pipewire.h b/third_party/libwebrtc/modules/desktop_capture/linux/screen_capturer_pipewire.h
deleted file mode 100644
index 66dcd68..0000000
--- a/third_party/libwebrtc/modules/desktop_capture/linux/screen_capturer_pipewire.h
+++ /dev/null
@@ -1,33 +0,0 @@
-/*
- *  Copyright 2018 The WebRTC project authors. All Rights Reserved.
- *
- *  Use of this source code is governed by a BSD-style license
- *  that can be found in the LICENSE file in the root of the source
- *  tree. An additional intellectual property rights grant can be found
- *  in the file PATENTS.  All contributing project authors may
- *  be found in the AUTHORS file in the root of the source tree.
- */
-
-#ifndef MODULES_DESKTOP_CAPTURE_LINUX_SCREEN_CAPTURER_PIPEWIRE_H_
-#define MODULES_DESKTOP_CAPTURE_LINUX_SCREEN_CAPTURER_PIPEWIRE_H_
-
-#include <memory>
-
-#include "modules/desktop_capture/linux/base_capturer_pipewire.h"
-
-namespace webrtc {
-
-class ScreenCapturerPipeWire : public BaseCapturerPipeWire {
- public:
-  ScreenCapturerPipeWire();
-  ~ScreenCapturerPipeWire() override;
-
-  static std::unique_ptr<DesktopCapturer> CreateRawScreenCapturer(
-      const DesktopCaptureOptions& options);
-
-  RTC_DISALLOW_COPY_AND_ASSIGN(ScreenCapturerPipeWire);
-};
-
-}  // namespace webrtc
-
-#endif  // MODULES_DESKTOP_CAPTURE_LINUX_SCREEN_CAPTURER_PIPEWIRE_H_
diff --git a/third_party/libwebrtc/modules/desktop_capture/linux/screencast_portal.cc b/third_party/libwebrtc/modules/desktop_capture/linux/screencast_portal.cc
new file mode 100644
index 0000000..306e984
--- /dev/null
+++ b/third_party/libwebrtc/modules/desktop_capture/linux/screencast_portal.cc
@@ -0,0 +1,532 @@
+/*
+ *  Copyright 2022 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include "modules/desktop_capture/linux/screencast_portal.h"
+
+#include <gio/gunixfdlist.h>
+#include <glib-object.h>
+
+#include "modules/desktop_capture/linux/scoped_glib.h"
+#include "rtc_base/checks.h"
+#include "rtc_base/logging.h"
+
+namespace webrtc {
+
+const char kDesktopBusName[] = "org.freedesktop.portal.Desktop";
+const char kDesktopObjectPath[] = "/org/freedesktop/portal/desktop";
+const char kDesktopRequestObjectPath[] =
+    "/org/freedesktop/portal/desktop/request";
+const char kSessionInterfaceName[] = "org.freedesktop.portal.Session";
+const char kRequestInterfaceName[] = "org.freedesktop.portal.Request";
+const char kScreenCastInterfaceName[] = "org.freedesktop.portal.ScreenCast";
+
+ScreenCastPortal::ScreenCastPortal(CaptureSourceType source_type,
+                                   PortalNotifier* notifier)
+    : notifier_(notifier), capture_source_type_(source_type) {}
+
+ScreenCastPortal::~ScreenCastPortal() {
+  if (start_request_signal_id_) {
+    g_dbus_connection_signal_unsubscribe(connection_, start_request_signal_id_);
+  }
+  if (sources_request_signal_id_) {
+    g_dbus_connection_signal_unsubscribe(connection_,
+                                         sources_request_signal_id_);
+  }
+  if (session_request_signal_id_) {
+    g_dbus_connection_signal_unsubscribe(connection_,
+                                         session_request_signal_id_);
+  }
+
+  if (!session_handle_.empty()) {
+    Scoped<GDBusMessage> message(
+        g_dbus_message_new_method_call(kDesktopBusName, session_handle_.c_str(),
+                                       kSessionInterfaceName, "Close"));
+    if (message.get()) {
+      Scoped<GError> error;
+      g_dbus_connection_send_message(connection_, message.get(),
+                                     G_DBUS_SEND_MESSAGE_FLAGS_NONE,
+                                     /*out_serial=*/nullptr, error.receive());
+      if (error.get()) {
+        RTC_LOG(LS_ERROR) << "Failed to close the session: " << error->message;
+      }
+    }
+  }
+
+  if (cancellable_) {
+    g_cancellable_cancel(cancellable_);
+    g_object_unref(cancellable_);
+    cancellable_ = nullptr;
+  }
+
+  if (proxy_) {
+    g_object_unref(proxy_);
+    proxy_ = nullptr;
+  }
+
+  if (pw_fd_ != -1) {
+    close(pw_fd_);
+  }
+}
+
+void ScreenCastPortal::Start() {
+  cancellable_ = g_cancellable_new();
+  g_dbus_proxy_new_for_bus(
+      G_BUS_TYPE_SESSION, G_DBUS_PROXY_FLAGS_NONE, /*info=*/nullptr,
+      kDesktopBusName, kDesktopObjectPath, kScreenCastInterfaceName,
+      cancellable_, reinterpret_cast<GAsyncReadyCallback>(OnProxyRequested),
+      this);
+}
+
+void ScreenCastPortal::PortalFailed(RequestResponse result) {
+  notifier_->OnScreenCastRequestResult(result, pw_stream_node_id_, pw_fd_);
+}
+
+uint32_t ScreenCastPortal::SetupRequestResponseSignal(
+    const char* object_path,
+    GDBusSignalCallback callback) {
+  return g_dbus_connection_signal_subscribe(
+      connection_, kDesktopBusName, kRequestInterfaceName, "Response",
+      object_path, /*arg0=*/nullptr, G_DBUS_SIGNAL_FLAGS_NO_MATCH_RULE,
+      callback, this, /*user_data_free_func=*/nullptr);
+}
+
+// static
+void ScreenCastPortal::OnProxyRequested(GObject* /*object*/,
+                                        GAsyncResult* result,
+                                        gpointer user_data) {
+  ScreenCastPortal* that = static_cast<ScreenCastPortal*>(user_data);
+  RTC_DCHECK(that);
+
+  Scoped<GError> error;
+  GDBusProxy* proxy = g_dbus_proxy_new_finish(result, error.receive());
+  if (!proxy) {
+    if (g_error_matches(error.get(), G_IO_ERROR, G_IO_ERROR_CANCELLED))
+      return;
+    RTC_LOG(LS_ERROR) << "Failed to create a proxy for the screen cast portal: "
+                      << error->message;
+    that->PortalFailed(RequestResponse::kError);
+    return;
+  }
+  that->proxy_ = proxy;
+  that->connection_ = g_dbus_proxy_get_connection(that->proxy_);
+
+  RTC_LOG(LS_INFO) << "Created proxy for the screen cast portal.";
+
+  that->SessionRequest();
+}
+
+// static
+std::string ScreenCastPortal::PrepareSignalHandle(GDBusConnection* connection,
+                                                  const char* token) {
+  Scoped<char> sender(
+      g_strdup(g_dbus_connection_get_unique_name(connection) + 1));
+  for (int i = 0; sender.get()[i]; ++i) {
+    if (sender.get()[i] == '.') {
+      sender.get()[i] = '_';
+    }
+  }
+
+  const char* handle = g_strconcat(kDesktopRequestObjectPath, "/", sender.get(),
+                                   "/", token, /*end of varargs*/ nullptr);
+
+  return handle;
+}
+
+void ScreenCastPortal::SessionRequest() {
+  GVariantBuilder builder;
+  Scoped<char> variant_string;
+
+  g_variant_builder_init(&builder, G_VARIANT_TYPE_VARDICT);
+  variant_string =
+      g_strdup_printf("webrtc_session%d", g_random_int_range(0, G_MAXINT));
+  g_variant_builder_add(&builder, "{sv}", "session_handle_token",
+                        g_variant_new_string(variant_string.get()));
+  variant_string = g_strdup_printf("webrtc%d", g_random_int_range(0, G_MAXINT));
+  g_variant_builder_add(&builder, "{sv}", "handle_token",
+                        g_variant_new_string(variant_string.get()));
+
+  portal_handle_ = PrepareSignalHandle(connection_, variant_string.get());
+  session_request_signal_id_ = SetupRequestResponseSignal(
+      portal_handle_.c_str(), OnSessionRequestResponseSignal);
+
+  RTC_LOG(LS_INFO) << "Screen cast session requested.";
+  g_dbus_proxy_call(proxy_, "CreateSession", g_variant_new("(a{sv})", &builder),
+                    G_DBUS_CALL_FLAGS_NONE, /*timeout=*/-1, cancellable_,
+                    reinterpret_cast<GAsyncReadyCallback>(OnSessionRequested),
+                    this);
+}
+
+// static
+void ScreenCastPortal::OnSessionRequested(GDBusProxy* proxy,
+                                          GAsyncResult* result,
+                                          gpointer user_data) {
+  ScreenCastPortal* that = static_cast<ScreenCastPortal*>(user_data);
+  RTC_DCHECK(that);
+
+  Scoped<GError> error;
+  Scoped<GVariant> variant(
+      g_dbus_proxy_call_finish(proxy, result, error.receive()));
+  if (!variant) {
+    if (g_error_matches(error.get(), G_IO_ERROR, G_IO_ERROR_CANCELLED))
+      return;
+    RTC_LOG(LS_ERROR) << "Failed to create a screen cast session: "
+                      << error->message;
+    that->PortalFailed(RequestResponse::kError);
+    return;
+  }
+  RTC_LOG(LS_INFO) << "Initializing the screen cast session.";
+
+  Scoped<char> handle;
+  g_variant_get_child(variant.get(), 0, "o", &handle);
+  if (!handle) {
+    RTC_LOG(LS_ERROR) << "Failed to initialize the screen cast session.";
+    if (that->session_request_signal_id_) {
+      g_dbus_connection_signal_unsubscribe(that->connection_,
+                                           that->session_request_signal_id_);
+      that->session_request_signal_id_ = 0;
+    }
+    that->PortalFailed(RequestResponse::kError);
+    return;
+  }
+
+  RTC_LOG(LS_INFO) << "Subscribing to the screen cast session.";
+}
+
+// static
+void ScreenCastPortal::OnSessionRequestResponseSignal(
+    GDBusConnection* connection,
+    const char* sender_name,
+    const char* object_path,
+    const char* interface_name,
+    const char* signal_name,
+    GVariant* parameters,
+    gpointer user_data) {
+  ScreenCastPortal* that = static_cast<ScreenCastPortal*>(user_data);
+  RTC_DCHECK(that);
+
+  RTC_LOG(LS_INFO)
+      << "Received response for the screen cast session subscription.";
+
+  uint32_t portal_response;
+  Scoped<GVariant> response_data;
+  g_variant_get(parameters, "(u@a{sv})", &portal_response,
+                response_data.receive());
+  Scoped<GVariant> session_handle(
+      g_variant_lookup_value(response_data.get(), "session_handle", nullptr));
+  that->session_handle_ = g_variant_dup_string(session_handle.get(), nullptr);
+
+  if (that->session_handle_.empty() || portal_response) {
+    RTC_LOG(LS_ERROR)
+        << "Failed to request the screen cast session subscription.";
+    that->PortalFailed(RequestResponse::kError);
+    return;
+  }
+
+  that->session_closed_signal_id_ = g_dbus_connection_signal_subscribe(
+      that->connection_, kDesktopBusName, kSessionInterfaceName, "Closed",
+      that->session_handle_.c_str(), /*arg0=*/nullptr, G_DBUS_SIGNAL_FLAGS_NONE,
+      OnSessionClosedSignal, that, /*user_data_free_func=*/nullptr);
+
+  that->SourcesRequest();
+}
+
+// static
+void ScreenCastPortal::OnSessionClosedSignal(GDBusConnection* connection,
+                                             const char* sender_name,
+                                             const char* object_path,
+                                             const char* interface_name,
+                                             const char* signal_name,
+                                             GVariant* parameters,
+                                             gpointer user_data) {
+  ScreenCastPortal* that = static_cast<ScreenCastPortal*>(user_data);
+  RTC_DCHECK(that);
+
+  RTC_LOG(LS_INFO) << "Received closed signal from session.";
+
+  that->notifier_->OnScreenCastSessionClosed();
+
+  // Unsubscribe from the signal and free the session handle to avoid calling
+  // Session::Close from the destructor since it's already closed
+  g_dbus_connection_signal_unsubscribe(that->connection_,
+                                       that->session_closed_signal_id_);
+}
+
+void ScreenCastPortal::SourcesRequest() {
+  GVariantBuilder builder;
+  Scoped<char> variant_string;
+
+  g_variant_builder_init(&builder, G_VARIANT_TYPE_VARDICT);
+  // We want to record monitor content.
+  g_variant_builder_add(
+      &builder, "{sv}", "types",
+      g_variant_new_uint32(static_cast<uint32_t>(capture_source_type_)));
+  // We don't want to allow selection of multiple sources.
+  g_variant_builder_add(&builder, "{sv}", "multiple",
+                        g_variant_new_boolean(false));
+
+  Scoped<GVariant> variant(
+      g_dbus_proxy_get_cached_property(proxy_, "AvailableCursorModes"));
+  if (variant.get()) {
+    uint32_t modes = 0;
+    g_variant_get(variant.get(), "u", &modes);
+    // Make request only if this mode is advertised by the portal
+    // implementation.
+    if (modes & static_cast<uint32_t>(cursor_mode_)) {
+      g_variant_builder_add(
+          &builder, "{sv}", "cursor_mode",
+          g_variant_new_uint32(static_cast<uint32_t>(cursor_mode_)));
+    }
+  }
+
+  variant_string = g_strdup_printf("webrtc%d", g_random_int_range(0, G_MAXINT));
+  g_variant_builder_add(&builder, "{sv}", "handle_token",
+                        g_variant_new_string(variant_string.get()));
+
+  sources_handle_ = PrepareSignalHandle(connection_, variant_string.get());
+  sources_request_signal_id_ = SetupRequestResponseSignal(
+      sources_handle_.c_str(), OnSourcesRequestResponseSignal);
+
+  RTC_LOG(LS_INFO) << "Requesting sources from the screen cast session.";
+  g_dbus_proxy_call(
+      proxy_, "SelectSources",
+      g_variant_new("(oa{sv})", session_handle_.c_str(), &builder),
+      G_DBUS_CALL_FLAGS_NONE, /*timeout=*/-1, cancellable_,
+      reinterpret_cast<GAsyncReadyCallback>(OnSourcesRequested), this);
+}
+
+// static
+void ScreenCastPortal::OnSourcesRequested(GDBusProxy* proxy,
+                                          GAsyncResult* result,
+                                          gpointer user_data) {
+  ScreenCastPortal* that = static_cast<ScreenCastPortal*>(user_data);
+  RTC_DCHECK(that);
+
+  Scoped<GError> error;
+  Scoped<GVariant> variant(
+      g_dbus_proxy_call_finish(proxy, result, error.receive()));
+  if (!variant) {
+    if (g_error_matches(error.get(), G_IO_ERROR, G_IO_ERROR_CANCELLED))
+      return;
+    RTC_LOG(LS_ERROR) << "Failed to request the sources: " << error->message;
+    that->PortalFailed(RequestResponse::kError);
+    return;
+  }
+
+  RTC_LOG(LS_INFO) << "Sources requested from the screen cast session.";
+
+  Scoped<char> handle;
+  g_variant_get_child(variant.get(), 0, "o", handle.receive());
+  if (!handle) {
+    RTC_LOG(LS_ERROR) << "Failed to initialize the screen cast session.";
+    if (that->sources_request_signal_id_) {
+      g_dbus_connection_signal_unsubscribe(that->connection_,
+                                           that->sources_request_signal_id_);
+      that->sources_request_signal_id_ = 0;
+    }
+    that->PortalFailed(RequestResponse::kError);
+    return;
+  }
+
+  RTC_LOG(LS_INFO) << "Subscribed to sources signal.";
+}
+
+// static
+void ScreenCastPortal::OnSourcesRequestResponseSignal(
+    GDBusConnection* connection,
+    const char* sender_name,
+    const char* object_path,
+    const char* interface_name,
+    const char* signal_name,
+    GVariant* parameters,
+    gpointer user_data) {
+  ScreenCastPortal* that = static_cast<ScreenCastPortal*>(user_data);
+  RTC_DCHECK(that);
+
+  RTC_LOG(LS_INFO) << "Received sources signal from session.";
+
+  uint32_t portal_response;
+  g_variant_get(parameters, "(u@a{sv})", &portal_response, nullptr);
+  if (portal_response) {
+    RTC_LOG(LS_ERROR)
+        << "Failed to select sources for the screen cast session.";
+    that->PortalFailed(RequestResponse::kError);
+    return;
+  }
+
+  that->StartRequest();
+}
+
+void ScreenCastPortal::StartRequest() {
+  GVariantBuilder builder;
+  Scoped<char> variant_string;
+
+  g_variant_builder_init(&builder, G_VARIANT_TYPE_VARDICT);
+  variant_string = g_strdup_printf("webrtc%d", g_random_int_range(0, G_MAXINT));
+  g_variant_builder_add(&builder, "{sv}", "handle_token",
+                        g_variant_new_string(variant_string.get()));
+
+  start_handle_ = PrepareSignalHandle(connection_, variant_string.get());
+  start_request_signal_id_ = SetupRequestResponseSignal(
+      start_handle_.c_str(), OnStartRequestResponseSignal);
+
+  // "Identifier for the application window", this is Wayland, so not "x11:...".
+  const char parent_window[] = "";
+
+  RTC_LOG(LS_INFO) << "Starting the screen cast session.";
+  g_dbus_proxy_call(proxy_, "Start",
+                    g_variant_new("(osa{sv})", session_handle_.c_str(),
+                                  parent_window, &builder),
+                    G_DBUS_CALL_FLAGS_NONE, /*timeout=*/-1, cancellable_,
+                    reinterpret_cast<GAsyncReadyCallback>(OnStartRequested),
+                    this);
+}
+
+// static
+void ScreenCastPortal::OnStartRequested(GDBusProxy* proxy,
+                                        GAsyncResult* result,
+                                        gpointer user_data) {
+  ScreenCastPortal* that = static_cast<ScreenCastPortal*>(user_data);
+  RTC_DCHECK(that);
+
+  Scoped<GError> error;
+  Scoped<GVariant> variant(
+      g_dbus_proxy_call_finish(proxy, result, error.receive()));
+  if (!variant) {
+    if (g_error_matches(error.get(), G_IO_ERROR, G_IO_ERROR_CANCELLED))
+      return;
+    RTC_LOG(LS_ERROR) << "Failed to start the screen cast session: "
+                      << error->message;
+    that->PortalFailed(RequestResponse::kError);
+    return;
+  }
+
+  RTC_LOG(LS_INFO) << "Initializing the start of the screen cast session.";
+
+  Scoped<char> handle;
+  g_variant_get_child(variant.get(), 0, "o", handle.receive());
+  if (!handle) {
+    RTC_LOG(LS_ERROR)
+        << "Failed to initialize the start of the screen cast session.";
+    if (that->start_request_signal_id_) {
+      g_dbus_connection_signal_unsubscribe(that->connection_,
+                                           that->start_request_signal_id_);
+      that->start_request_signal_id_ = 0;
+    }
+    that->PortalFailed(RequestResponse::kError);
+    return;
+  }
+
+  RTC_LOG(LS_INFO) << "Subscribed to the start signal.";
+}
+
+// static
+void ScreenCastPortal::OnStartRequestResponseSignal(GDBusConnection* connection,
+                                                    const char* sender_name,
+                                                    const char* object_path,
+                                                    const char* interface_name,
+                                                    const char* signal_name,
+                                                    GVariant* parameters,
+                                                    gpointer user_data) {
+  ScreenCastPortal* that = static_cast<ScreenCastPortal*>(user_data);
+  RTC_DCHECK(that);
+
+  RTC_LOG(LS_INFO) << "Start signal received.";
+  uint32_t portal_response;
+  Scoped<GVariant> response_data;
+  Scoped<GVariantIter> iter;
+  g_variant_get(parameters, "(u@a{sv})", &portal_response,
+                response_data.receive());
+  if (portal_response || !response_data) {
+    RTC_LOG(LS_ERROR) << "Failed to start the screen cast session.";
+    that->PortalFailed(static_cast<RequestResponse>(portal_response));
+    return;
+  }
+
+  // Array of PipeWire streams. See
+  // https://github.com/flatpak/xdg-desktop-portal/blob/master/data/org.freedesktop.portal.ScreenCast.xml
+  // documentation for <method name="Start">.
+  if (g_variant_lookup(response_data.get(), "streams", "a(ua{sv})",
+                       iter.receive())) {
+    Scoped<GVariant> variant;
+
+    while (g_variant_iter_next(iter.get(), "@(ua{sv})", variant.receive())) {
+      uint32_t stream_id;
+      uint32_t type;
+      Scoped<GVariant> options;
+
+      g_variant_get(variant.get(), "(u@a{sv})", &stream_id, options.receive());
+      RTC_DCHECK(options.get());
+
+      if (g_variant_lookup(options.get(), "source_type", "u", &type)) {
+        that->capture_source_type_ =
+            static_cast<ScreenCastPortal::CaptureSourceType>(type);
+      }
+
+      that->pw_stream_node_id_ = stream_id;
+
+      break;
+    }
+  }
+
+  that->OpenPipeWireRemote();
+}
+
+void ScreenCastPortal::OpenPipeWireRemote() {
+  GVariantBuilder builder;
+  g_variant_builder_init(&builder, G_VARIANT_TYPE_VARDICT);
+
+  RTC_LOG(LS_INFO) << "Opening the PipeWire remote.";
+
+  g_dbus_proxy_call_with_unix_fd_list(
+      proxy_, "OpenPipeWireRemote",
+      g_variant_new("(oa{sv})", session_handle_.c_str(), &builder),
+      G_DBUS_CALL_FLAGS_NONE, /*timeout=*/-1, /*fd_list=*/nullptr, cancellable_,
+      reinterpret_cast<GAsyncReadyCallback>(OnOpenPipeWireRemoteRequested),
+      this);
+}
+
+// static
+void ScreenCastPortal::OnOpenPipeWireRemoteRequested(GDBusProxy* proxy,
+                                                     GAsyncResult* result,
+                                                     gpointer user_data) {
+  ScreenCastPortal* that = static_cast<ScreenCastPortal*>(user_data);
+  RTC_DCHECK(that);
+
+  Scoped<GError> error;
+  Scoped<GUnixFDList> outlist;
+  Scoped<GVariant> variant(g_dbus_proxy_call_with_unix_fd_list_finish(
+      proxy, outlist.receive(), result, error.receive()));
+  if (!variant) {
+    if (g_error_matches(error.get(), G_IO_ERROR, G_IO_ERROR_CANCELLED))
+      return;
+    RTC_LOG(LS_ERROR) << "Failed to open the PipeWire remote: "
+                      << error->message;
+    that->PortalFailed(RequestResponse::kError);
+    return;
+  }
+
+  int32_t index;
+  g_variant_get(variant.get(), "(h)", &index);
+
+  that->pw_fd_ = g_unix_fd_list_get(outlist.get(), index, error.receive());
+
+  if (that->pw_fd_ == -1) {
+    RTC_LOG(LS_ERROR) << "Failed to get file descriptor from the list: "
+                      << error->message;
+    that->PortalFailed(RequestResponse::kError);
+    return;
+  }
+
+  that->notifier_->OnScreenCastRequestResult(
+      ScreenCastPortal::RequestResponse::kSuccess, that->pw_stream_node_id_,
+      that->pw_fd_);
+}
+
+}  // namespace webrtc
diff --git a/third_party/libwebrtc/modules/desktop_capture/linux/screencast_portal.h b/third_party/libwebrtc/modules/desktop_capture/linux/screencast_portal.h
new file mode 100644
index 0000000..7da218e
--- /dev/null
+++ b/third_party/libwebrtc/modules/desktop_capture/linux/screencast_portal.h
@@ -0,0 +1,169 @@
+/*
+ *  Copyright 2022 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#ifndef MODULES_DESKTOP_CAPTURE_LINUX_SCREENCAST_PORTAL_H_
+#define MODULES_DESKTOP_CAPTURE_LINUX_SCREENCAST_PORTAL_H_
+
+#include <gio/gio.h>
+
+#include <string>
+
+#include "absl/types/optional.h"
+
+namespace webrtc {
+
+class ScreenCastPortal {
+ public:
+  // Values are set based on source type property in
+  // xdg-desktop-portal/screencast
+  // https://github.com/flatpak/xdg-desktop-portal/blob/master/data/org.freedesktop.portal.ScreenCast.xml
+  enum class CaptureSourceType : uint32_t {
+    kScreen = 0b01,
+    kWindow = 0b10,
+    kAnyScreenContent = kScreen | kWindow
+  };
+
+  // Values are set based on cursor mode property in
+  // xdg-desktop-portal/screencast
+  // https://github.com/flatpak/xdg-desktop-portal/blob/master/data/org.freedesktop.portal.ScreenCast.xml
+  enum class CursorMode : uint32_t {
+    // Mouse cursor will not be included in any form
+    kHidden = 0b01,
+    // Mouse cursor will be part of the screen content
+    kEmbedded = 0b10,
+    // Mouse cursor information will be send separately in form of metadata
+    kMetadata = 0b100
+  };
+
+  // Interface that must be implemented by the ScreenCastPortal consumers.
+  enum class RequestResponse {
+    // Success, the request is carried out.
+    kSuccess,
+    // The user cancelled the interaction.
+    kUserCancelled,
+    // The user interaction was ended in some other way.
+    kError,
+
+    kMaxValue = kError
+  };
+
+  class PortalNotifier {
+   public:
+    virtual void OnScreenCastRequestResult(RequestResponse result,
+                                           uint32_t stream_node_id,
+                                           int fd) = 0;
+    virtual void OnScreenCastSessionClosed() = 0;
+
+   protected:
+    PortalNotifier() = default;
+    virtual ~PortalNotifier() = default;
+  };
+
+  explicit ScreenCastPortal(CaptureSourceType source_type,
+                            PortalNotifier* notifier);
+  ~ScreenCastPortal();
+
+  // Initialize ScreenCastPortal with series of DBus calls where we try to
+  // obtain all the required information, like PipeWire file descriptor and
+  // PipeWire stream node ID.
+  //
+  // The observer will return whether the communication with xdg-desktop-portal
+  // was successful and only then you will be able to get all the required
+  // information in order to continue working with PipeWire.
+  void Start();
+
+ private:
+  PortalNotifier* notifier_;
+
+  // A PipeWire stream ID of stream we will be connecting to
+  uint32_t pw_stream_node_id_ = 0;
+  // A file descriptor of PipeWire socket
+  int pw_fd_ = -1;
+
+  CaptureSourceType capture_source_type_ =
+      ScreenCastPortal::CaptureSourceType::kScreen;
+
+  CursorMode cursor_mode_ = ScreenCastPortal::CursorMode::kMetadata;
+
+  GDBusConnection* connection_ = nullptr;
+  GDBusProxy* proxy_ = nullptr;
+  GCancellable* cancellable_ = nullptr;
+  std::string portal_handle_;
+  std::string session_handle_;
+  std::string sources_handle_;
+  std::string start_handle_;
+  guint session_request_signal_id_ = 0;
+  guint sources_request_signal_id_ = 0;
+  guint start_request_signal_id_ = 0;
+  guint session_closed_signal_id_ = 0;
+
+  void PortalFailed(RequestResponse result);
+
+  uint32_t SetupRequestResponseSignal(const char* object_path,
+                                      GDBusSignalCallback callback);
+
+  static void OnProxyRequested(GObject* object,
+                               GAsyncResult* result,
+                               gpointer user_data);
+
+  static std::string PrepareSignalHandle(GDBusConnection* connection,
+                                         const char* token);
+
+  void SessionRequest();
+  static void OnSessionRequested(GDBusProxy* proxy,
+                                 GAsyncResult* result,
+                                 gpointer user_data);
+  static void OnSessionRequestResponseSignal(GDBusConnection* connection,
+                                             const char* sender_name,
+                                             const char* object_path,
+                                             const char* interface_name,
+                                             const char* signal_name,
+                                             GVariant* parameters,
+                                             gpointer user_data);
+  static void OnSessionClosedSignal(GDBusConnection* connection,
+                                    const char* sender_name,
+                                    const char* object_path,
+                                    const char* interface_name,
+                                    const char* signal_name,
+                                    GVariant* parameters,
+                                    gpointer user_data);
+  void SourcesRequest();
+  static void OnSourcesRequested(GDBusProxy* proxy,
+                                 GAsyncResult* result,
+                                 gpointer user_data);
+  static void OnSourcesRequestResponseSignal(GDBusConnection* connection,
+                                             const char* sender_name,
+                                             const char* object_path,
+                                             const char* interface_name,
+                                             const char* signal_name,
+                                             GVariant* parameters,
+                                             gpointer user_data);
+
+  void StartRequest();
+  static void OnStartRequested(GDBusProxy* proxy,
+                               GAsyncResult* result,
+                               gpointer user_data);
+  static void OnStartRequestResponseSignal(GDBusConnection* connection,
+                                           const char* sender_name,
+                                           const char* object_path,
+                                           const char* interface_name,
+                                           const char* signal_name,
+                                           GVariant* parameters,
+                                           gpointer user_data);
+
+  void OpenPipeWireRemote();
+  static void OnOpenPipeWireRemoteRequested(GDBusProxy* proxy,
+                                            GAsyncResult* result,
+                                            gpointer user_data);
+};
+
+}  // namespace webrtc
+
+#endif  // MODULES_DESKTOP_CAPTURE_LINUX_SCREENCAST_PORTAL_H_
diff --git a/third_party/libwebrtc/modules/desktop_capture/linux/shared_screencast_stream.cc b/third_party/libwebrtc/modules/desktop_capture/linux/shared_screencast_stream.cc
new file mode 100644
index 0000000..c6ba661
--- /dev/null
+++ b/third_party/libwebrtc/modules/desktop_capture/linux/shared_screencast_stream.cc
@@ -0,0 +1,872 @@
+/*
+ *  Copyright 2022 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include "modules/desktop_capture/linux/shared_screencast_stream.h"
+
+#include <libdrm/drm_fourcc.h>
+#include <pipewire/pipewire.h>
+#include <spa/param/format-utils.h>
+#include <spa/param/props.h>
+#include <spa/param/video/format-utils.h>
+#include <spa/utils/result.h>
+#include <sys/mman.h>
+
+#include <string>
+#include <tuple>
+#include <utility>
+#include <vector>
+
+#include "absl/memory/memory.h"
+#include "modules/desktop_capture/linux/egl_dmabuf.h"
+#include "modules/desktop_capture/screen_capture_frame_queue.h"
+#include "rtc_base/checks.h"
+#include "rtc_base/logging.h"
+#include "rtc_base/sanitizer.h"
+#include "rtc_base/string_encode.h"
+#include "rtc_base/string_to_number.h"
+#include "rtc_base/synchronization/mutex.h"
+
+#if defined(WEBRTC_DLOPEN_PIPEWIRE)
+#include "modules/desktop_capture/linux/pipewire_stubs.h"
+using modules_desktop_capture_linux_wayland::InitializeStubs;
+using modules_desktop_capture_linux_wayland::kModuleDrm;
+using modules_desktop_capture_linux_wayland::kModulePipewire;
+using modules_desktop_capture_linux_wayland::StubPathMap;
+#endif  // defined(WEBRTC_DLOPEN_PIPEWIRE)
+
+namespace webrtc {
+
+const int kBytesPerPixel = 4;
+
+#if defined(WEBRTC_DLOPEN_PIPEWIRE)
+const char kPipeWireLib[] = "libpipewire-0.3.so.0";
+const char kDrmLib[] = "libdrm.so.2";
+#endif
+
+#if !PW_CHECK_VERSION(0, 3, 29)
+#define SPA_POD_PROP_FLAG_MANDATORY (1u << 3)
+#endif
+#if !PW_CHECK_VERSION(0, 3, 33)
+#define SPA_POD_PROP_FLAG_DONT_FIXATE (1u << 4)
+#endif
+
+constexpr int kCursorBpp = 4;
+constexpr int CursorMetaSize(int w, int h) {
+  return (sizeof(struct spa_meta_cursor) + sizeof(struct spa_meta_bitmap) +
+          w * h * kCursorBpp);
+}
+
+struct PipeWireVersion {
+  int major = 0;
+  int minor = 0;
+  int micro = 0;
+};
+
+constexpr PipeWireVersion kDmaBufMinVersion = {0, 3, 24};
+constexpr PipeWireVersion kDmaBufModifierMinVersion = {0, 3, 33};
+constexpr PipeWireVersion kDropSingleModifierMinVersion = {0, 3, 40};
+
+PipeWireVersion ParsePipeWireVersion(const char* version) {
+  std::vector<std::string> parsed_version;
+  rtc::split(version, '.', &parsed_version);
+
+  if (parsed_version.size() != 3) {
+    return {};
+  }
+
+  absl::optional<int> major = rtc::StringToNumber<int>(parsed_version.at(0));
+  absl::optional<int> minor = rtc::StringToNumber<int>(parsed_version.at(1));
+  absl::optional<int> micro = rtc::StringToNumber<int>(parsed_version.at(2));
+
+  // Return invalid version if we failed to parse it
+  if (!major || !minor || !micro) {
+    return {0, 0, 0};
+  }
+
+  return {major.value(), micro.value(), micro.value()};
+}
+
+spa_pod* BuildFormat(spa_pod_builder* builder,
+                     uint32_t format,
+                     const std::vector<uint64_t>& modifiers) {
+  bool first = true;
+  spa_pod_frame frames[2];
+  spa_rectangle pw_min_screen_bounds = spa_rectangle{1, 1};
+  spa_rectangle pw_max_screen_bounds = spa_rectangle{UINT32_MAX, UINT32_MAX};
+
+  spa_pod_builder_push_object(builder, &frames[0], SPA_TYPE_OBJECT_Format,
+                              SPA_PARAM_EnumFormat);
+  spa_pod_builder_add(builder, SPA_FORMAT_mediaType,
+                      SPA_POD_Id(SPA_MEDIA_TYPE_video), 0);
+  spa_pod_builder_add(builder, SPA_FORMAT_mediaSubtype,
+                      SPA_POD_Id(SPA_MEDIA_SUBTYPE_raw), 0);
+  spa_pod_builder_add(builder, SPA_FORMAT_VIDEO_format, SPA_POD_Id(format), 0);
+
+  if (modifiers.size()) {
+    if (modifiers.size() == 1 && modifiers[0] == DRM_FORMAT_MOD_INVALID) {
+      spa_pod_builder_prop(builder, SPA_FORMAT_VIDEO_modifier,
+                           SPA_POD_PROP_FLAG_MANDATORY);
+      spa_pod_builder_long(builder, modifiers[0]);
+    } else {
+      spa_pod_builder_prop(
+          builder, SPA_FORMAT_VIDEO_modifier,
+          SPA_POD_PROP_FLAG_MANDATORY | SPA_POD_PROP_FLAG_DONT_FIXATE);
+      spa_pod_builder_push_choice(builder, &frames[1], SPA_CHOICE_Enum, 0);
+
+      // modifiers from the array
+      for (int64_t val : modifiers) {
+        spa_pod_builder_long(builder, val);
+        // Add the first modifier twice as the very first value is the default
+        // option
+        if (first) {
+          spa_pod_builder_long(builder, val);
+          first = false;
+        }
+      }
+      spa_pod_builder_pop(builder, &frames[1]);
+    }
+  }
+
+  spa_pod_builder_add(
+      builder, SPA_FORMAT_VIDEO_size,
+      SPA_POD_CHOICE_RANGE_Rectangle(
+          &pw_min_screen_bounds, &pw_min_screen_bounds, &pw_max_screen_bounds),
+      0);
+
+  return static_cast<spa_pod*>(spa_pod_builder_pop(builder, &frames[0]));
+}
+
+class PipeWireThreadLoopLock {
+ public:
+  explicit PipeWireThreadLoopLock(pw_thread_loop* loop) : loop_(loop) {
+    pw_thread_loop_lock(loop_);
+  }
+  ~PipeWireThreadLoopLock() { pw_thread_loop_unlock(loop_); }
+
+ private:
+  pw_thread_loop* const loop_;
+};
+
+class ScopedBuf {
+ public:
+  ScopedBuf() {}
+  ScopedBuf(uint8_t* map, int map_size, int fd)
+      : map_(map), map_size_(map_size), fd_(fd) {}
+  ~ScopedBuf() {
+    if (map_ != MAP_FAILED) {
+      munmap(map_, map_size_);
+    }
+  }
+
+  explicit operator bool() { return map_ != MAP_FAILED; }
+
+  void initialize(uint8_t* map, int map_size, int fd) {
+    map_ = map;
+    map_size_ = map_size;
+    fd_ = fd;
+  }
+
+  uint8_t* get() { return map_; }
+
+ protected:
+  uint8_t* map_ = static_cast<uint8_t*>(MAP_FAILED);
+  int map_size_;
+  int fd_;
+};
+
+class SharedScreenCastStreamPrivate {
+ public:
+  SharedScreenCastStreamPrivate();
+  ~SharedScreenCastStreamPrivate();
+
+  bool StartScreenCastStream(uint32_t stream_node_id, int fd);
+  void StopScreenCastStream();
+  std::unique_ptr<DesktopFrame> CaptureFrame();
+  std::unique_ptr<MouseCursor> CaptureCursor();
+  DesktopVector CaptureCursorPosition();
+
+ private:
+  uint32_t pw_stream_node_id_ = 0;
+  int pw_fd_ = -1;
+
+  DesktopSize desktop_size_ = {};
+  DesktopSize video_size_;
+
+  webrtc::Mutex queue_lock_;
+  ScreenCaptureFrameQueue<SharedDesktopFrame> queue_
+      RTC_GUARDED_BY(&queue_lock_);
+  std::unique_ptr<MouseCursor> mouse_cursor_;
+  DesktopVector mouse_cursor_position_ = DesktopVector(-1, -1);
+
+  int64_t modifier_;
+  std::unique_ptr<EglDmaBuf> egl_dmabuf_;
+  // List of modifiers we query as supported by the graphics card/driver
+  std::vector<uint64_t> modifiers_;
+
+  // PipeWire types
+  struct pw_context* pw_context_ = nullptr;
+  struct pw_core* pw_core_ = nullptr;
+  struct pw_stream* pw_stream_ = nullptr;
+  struct pw_thread_loop* pw_main_loop_ = nullptr;
+  struct spa_source* renegotiate_ = nullptr;
+
+  spa_hook spa_core_listener_;
+  spa_hook spa_stream_listener_;
+
+  // A number used to verify all previous methods and the resulting
+  // events have been handled.
+  int server_version_sync_ = 0;
+  // Version of the running PipeWire server we communicate with
+  PipeWireVersion pw_server_version_;
+  // Version of the library used to run our code
+  PipeWireVersion pw_client_version_;
+
+  // event handlers
+  pw_core_events pw_core_events_ = {};
+  pw_stream_events pw_stream_events_ = {};
+
+  struct spa_video_info_raw spa_video_format_;
+
+  void ProcessBuffer(pw_buffer* buffer);
+  void ConvertRGBxToBGRx(uint8_t* frame, uint32_t size);
+
+  // PipeWire callbacks
+  static void OnCoreError(void* data,
+                          uint32_t id,
+                          int seq,
+                          int res,
+                          const char* message);
+  static void OnCoreDone(void* user_data, uint32_t id, int seq);
+  static void OnCoreInfo(void* user_data, const pw_core_info* info);
+  static void OnStreamParamChanged(void* data,
+                                   uint32_t id,
+                                   const struct spa_pod* format);
+  static void OnStreamStateChanged(void* data,
+                                   pw_stream_state old_state,
+                                   pw_stream_state state,
+                                   const char* error_message);
+  static void OnStreamProcess(void* data);
+  // This will be invoked in case we fail to process DMA-BUF PW buffer using
+  // negotiated stream parameters (modifier). We will drop the modifier we
+  // failed to use and try to use a different one or fallback to shared memory
+  // buffers.
+  static void OnRenegotiateFormat(void* data, uint64_t);
+};
+
+bool operator>=(const PipeWireVersion& current_pw_version,
+                const PipeWireVersion& required_pw_version) {
+  if (!current_pw_version.major && !current_pw_version.minor &&
+      !current_pw_version.micro) {
+    return false;
+  }
+
+  return std::tie(current_pw_version.major, current_pw_version.minor,
+                  current_pw_version.micro) >=
+         std::tie(required_pw_version.major, required_pw_version.minor,
+                  required_pw_version.micro);
+}
+
+bool operator<=(const PipeWireVersion& current_pw_version,
+                const PipeWireVersion& required_pw_version) {
+  if (!current_pw_version.major && !current_pw_version.minor &&
+      !current_pw_version.micro) {
+    return false;
+  }
+
+  return std::tie(current_pw_version.major, current_pw_version.minor,
+                  current_pw_version.micro) <=
+         std::tie(required_pw_version.major, required_pw_version.minor,
+                  required_pw_version.micro);
+}
+
+void SharedScreenCastStreamPrivate::OnCoreError(void* data,
+                                                uint32_t id,
+                                                int seq,
+                                                int res,
+                                                const char* message) {
+  SharedScreenCastStreamPrivate* that =
+      static_cast<SharedScreenCastStreamPrivate*>(data);
+  RTC_DCHECK(that);
+
+  RTC_LOG(LS_ERROR) << "PipeWire remote error: " << message;
+}
+
+void SharedScreenCastStreamPrivate::OnCoreInfo(void* data,
+                                               const pw_core_info* info) {
+  SharedScreenCastStreamPrivate* stream =
+      static_cast<SharedScreenCastStreamPrivate*>(data);
+  RTC_DCHECK(stream);
+
+  stream->pw_server_version_ = ParsePipeWireVersion(info->version);
+}
+
+void SharedScreenCastStreamPrivate::OnCoreDone(void* data,
+                                               uint32_t id,
+                                               int seq) {
+  const SharedScreenCastStreamPrivate* stream =
+      static_cast<SharedScreenCastStreamPrivate*>(data);
+  RTC_DCHECK(stream);
+
+  if (id == PW_ID_CORE && stream->server_version_sync_ == seq) {
+    pw_thread_loop_signal(stream->pw_main_loop_, false);
+  }
+}
+
+// static
+void SharedScreenCastStreamPrivate::OnStreamStateChanged(
+    void* data,
+    pw_stream_state old_state,
+    pw_stream_state state,
+    const char* error_message) {
+  SharedScreenCastStreamPrivate* that =
+      static_cast<SharedScreenCastStreamPrivate*>(data);
+  RTC_DCHECK(that);
+
+  switch (state) {
+    case PW_STREAM_STATE_ERROR:
+      RTC_LOG(LS_ERROR) << "PipeWire stream state error: " << error_message;
+      break;
+    case PW_STREAM_STATE_PAUSED:
+    case PW_STREAM_STATE_STREAMING:
+    case PW_STREAM_STATE_UNCONNECTED:
+    case PW_STREAM_STATE_CONNECTING:
+      break;
+  }
+}
+
+// static
+void SharedScreenCastStreamPrivate::OnStreamParamChanged(
+    void* data,
+    uint32_t id,
+    const struct spa_pod* format) {
+  SharedScreenCastStreamPrivate* that =
+      static_cast<SharedScreenCastStreamPrivate*>(data);
+  RTC_DCHECK(that);
+
+  RTC_LOG(LS_INFO) << "PipeWire stream format changed.";
+  if (!format || id != SPA_PARAM_Format) {
+    return;
+  }
+
+  spa_format_video_raw_parse(format, &that->spa_video_format_);
+
+  auto width = that->spa_video_format_.size.width;
+  auto height = that->spa_video_format_.size.height;
+  auto stride = SPA_ROUND_UP_N(width * kBytesPerPixel, 4);
+  auto size = height * stride;
+
+  that->desktop_size_ = DesktopSize(width, height);
+
+  uint8_t buffer[1024] = {};
+  auto builder = spa_pod_builder{buffer, sizeof(buffer)};
+
+  // Setup buffers and meta header for new format.
+
+  // When SPA_FORMAT_VIDEO_modifier is present we can use DMA-BUFs as
+  // the server announces support for it.
+  // See https://github.com/PipeWire/pipewire/blob/master/doc/dma-buf.dox
+  const bool has_modifier =
+      spa_pod_find_prop(format, nullptr, SPA_FORMAT_VIDEO_modifier);
+  that->modifier_ =
+      has_modifier ? that->spa_video_format_.modifier : DRM_FORMAT_MOD_INVALID;
+  std::vector<const spa_pod*> params;
+  const int buffer_types =
+      has_modifier || (that->pw_server_version_ >= kDmaBufMinVersion)
+          ? (1 << SPA_DATA_DmaBuf) | (1 << SPA_DATA_MemFd) |
+                (1 << SPA_DATA_MemPtr)
+          : (1 << SPA_DATA_MemFd) | (1 << SPA_DATA_MemPtr);
+
+  params.push_back(reinterpret_cast<spa_pod*>(spa_pod_builder_add_object(
+      &builder, SPA_TYPE_OBJECT_ParamBuffers, SPA_PARAM_Buffers,
+      SPA_PARAM_BUFFERS_size, SPA_POD_Int(size), SPA_PARAM_BUFFERS_stride,
+      SPA_POD_Int(stride), SPA_PARAM_BUFFERS_buffers,
+      SPA_POD_CHOICE_RANGE_Int(8, 1, 32), SPA_PARAM_BUFFERS_dataType,
+      SPA_POD_CHOICE_FLAGS_Int(buffer_types))));
+  params.push_back(reinterpret_cast<spa_pod*>(spa_pod_builder_add_object(
+      &builder, SPA_TYPE_OBJECT_ParamMeta, SPA_PARAM_Meta, SPA_PARAM_META_type,
+      SPA_POD_Id(SPA_META_Header), SPA_PARAM_META_size,
+      SPA_POD_Int(sizeof(struct spa_meta_header)))));
+  params.push_back(reinterpret_cast<spa_pod*>(spa_pod_builder_add_object(
+      &builder, SPA_TYPE_OBJECT_ParamMeta, SPA_PARAM_Meta, SPA_PARAM_META_type,
+      SPA_POD_Id(SPA_META_VideoCrop), SPA_PARAM_META_size,
+      SPA_POD_Int(sizeof(struct spa_meta_region)))));
+  params.push_back(reinterpret_cast<spa_pod*>(spa_pod_builder_add_object(
+      &builder, SPA_TYPE_OBJECT_ParamMeta, SPA_PARAM_Meta, SPA_PARAM_META_type,
+      SPA_POD_Id(SPA_META_Cursor), SPA_PARAM_META_size,
+      SPA_POD_CHOICE_RANGE_Int(CursorMetaSize(64, 64), CursorMetaSize(1, 1),
+                               CursorMetaSize(384, 384)))));
+  params.push_back(reinterpret_cast<spa_pod*>(spa_pod_builder_add_object(
+      &builder, SPA_TYPE_OBJECT_ParamMeta, SPA_PARAM_Meta, SPA_PARAM_META_type,
+      SPA_POD_Id(SPA_META_VideoDamage), SPA_PARAM_META_size,
+      SPA_POD_CHOICE_RANGE_Int(sizeof(struct spa_meta_region) * 16,
+                               sizeof(struct spa_meta_region) * 1,
+                               sizeof(struct spa_meta_region) * 16))));
+
+  pw_stream_update_params(that->pw_stream_, params.data(), params.size());
+}
+
+// static
+void SharedScreenCastStreamPrivate::OnStreamProcess(void* data) {
+  SharedScreenCastStreamPrivate* that =
+      static_cast<SharedScreenCastStreamPrivate*>(data);
+  RTC_DCHECK(that);
+
+  struct pw_buffer* next_buffer;
+  struct pw_buffer* buffer = nullptr;
+
+  next_buffer = pw_stream_dequeue_buffer(that->pw_stream_);
+  while (next_buffer) {
+    buffer = next_buffer;
+    next_buffer = pw_stream_dequeue_buffer(that->pw_stream_);
+
+    if (next_buffer) {
+      pw_stream_queue_buffer(that->pw_stream_, buffer);
+    }
+  }
+
+  if (!buffer) {
+    return;
+  }
+
+  that->ProcessBuffer(buffer);
+
+  pw_stream_queue_buffer(that->pw_stream_, buffer);
+}
+
+void SharedScreenCastStreamPrivate::OnRenegotiateFormat(void* data, uint64_t) {
+  SharedScreenCastStreamPrivate* that =
+      static_cast<SharedScreenCastStreamPrivate*>(data);
+  RTC_DCHECK(that);
+
+  {
+    PipeWireThreadLoopLock thread_loop_lock(that->pw_main_loop_);
+
+    uint8_t buffer[2048] = {};
+
+    spa_pod_builder builder = spa_pod_builder{buffer, sizeof(buffer)};
+
+    std::vector<const spa_pod*> params;
+
+    for (uint32_t format : {SPA_VIDEO_FORMAT_BGRA, SPA_VIDEO_FORMAT_RGBA,
+                            SPA_VIDEO_FORMAT_BGRx, SPA_VIDEO_FORMAT_RGBx}) {
+      if (!that->modifiers_.empty()) {
+        params.push_back(BuildFormat(&builder, format, that->modifiers_));
+      }
+      params.push_back(BuildFormat(&builder, format, /*modifiers=*/{}));
+    }
+
+    pw_stream_update_params(that->pw_stream_, params.data(), params.size());
+  }
+}
+
+SharedScreenCastStreamPrivate::SharedScreenCastStreamPrivate() {}
+
+SharedScreenCastStreamPrivate::~SharedScreenCastStreamPrivate() {
+  if (pw_main_loop_) {
+    pw_thread_loop_stop(pw_main_loop_);
+  }
+
+  if (pw_stream_) {
+    pw_stream_destroy(pw_stream_);
+  }
+
+  if (pw_core_) {
+    pw_core_disconnect(pw_core_);
+  }
+
+  if (pw_context_) {
+    pw_context_destroy(pw_context_);
+  }
+
+  if (pw_main_loop_) {
+    pw_thread_loop_destroy(pw_main_loop_);
+  }
+}
+
+bool SharedScreenCastStreamPrivate::StartScreenCastStream(
+    uint32_t stream_node_id,
+    int fd) {
+#if defined(WEBRTC_DLOPEN_PIPEWIRE)
+  StubPathMap paths;
+
+  // Check if the PipeWire and DRM libraries are available.
+  paths[kModulePipewire].push_back(kPipeWireLib);
+  paths[kModuleDrm].push_back(kDrmLib);
+
+  if (!InitializeStubs(paths)) {
+    RTC_LOG(LS_ERROR)
+        << "One of following libraries is missing on your system:\n"
+        << " - PipeWire (" << kPipeWireLib << ")\n"
+        << " - drm (" << kDrmLib << ")";
+    return false;
+  }
+#endif  // defined(WEBRTC_DLOPEN_PIPEWIRE)
+  egl_dmabuf_ = std::make_unique<EglDmaBuf>();
+
+  pw_stream_node_id_ = stream_node_id;
+  pw_fd_ = fd;
+
+  pw_init(/*argc=*/nullptr, /*argc=*/nullptr);
+
+  pw_main_loop_ = pw_thread_loop_new("pipewire-main-loop", nullptr);
+
+  pw_context_ =
+      pw_context_new(pw_thread_loop_get_loop(pw_main_loop_), nullptr, 0);
+  if (!pw_context_) {
+    RTC_LOG(LS_ERROR) << "Failed to create PipeWire context";
+    return false;
+  }
+
+  if (pw_thread_loop_start(pw_main_loop_) < 0) {
+    RTC_LOG(LS_ERROR) << "Failed to start main PipeWire loop";
+    return false;
+  }
+
+  pw_client_version_ = ParsePipeWireVersion(pw_get_library_version());
+
+  // Initialize event handlers, remote end and stream-related.
+  pw_core_events_.version = PW_VERSION_CORE_EVENTS;
+  pw_core_events_.info = &OnCoreInfo;
+  pw_core_events_.done = &OnCoreDone;
+  pw_core_events_.error = &OnCoreError;
+
+  pw_stream_events_.version = PW_VERSION_STREAM_EVENTS;
+  pw_stream_events_.state_changed = &OnStreamStateChanged;
+  pw_stream_events_.param_changed = &OnStreamParamChanged;
+  pw_stream_events_.process = &OnStreamProcess;
+
+  {
+    PipeWireThreadLoopLock thread_loop_lock(pw_main_loop_);
+
+    pw_core_ = pw_context_connect_fd(pw_context_, pw_fd_, nullptr, 0);
+    if (!pw_core_) {
+      RTC_LOG(LS_ERROR) << "Failed to connect PipeWire context";
+      return false;
+    }
+
+    pw_core_add_listener(pw_core_, &spa_core_listener_, &pw_core_events_, this);
+
+    // Add an event that can be later invoked by pw_loop_signal_event()
+    renegotiate_ = pw_loop_add_event(pw_thread_loop_get_loop(pw_main_loop_),
+                                     OnRenegotiateFormat, this);
+
+    server_version_sync_ =
+        pw_core_sync(pw_core_, PW_ID_CORE, server_version_sync_);
+
+    pw_thread_loop_wait(pw_main_loop_);
+
+    pw_properties* reuseProps =
+        pw_properties_new_string("pipewire.client.reuse=1");
+    pw_stream_ = pw_stream_new(pw_core_, "webrtc-consume-stream", reuseProps);
+
+    if (!pw_stream_) {
+      RTC_LOG(LS_ERROR) << "Failed to create PipeWire stream";
+      return false;
+    }
+
+    pw_stream_add_listener(pw_stream_, &spa_stream_listener_,
+                           &pw_stream_events_, this);
+    uint8_t buffer[2048] = {};
+
+    spa_pod_builder builder = spa_pod_builder{buffer, sizeof(buffer)};
+
+    std::vector<const spa_pod*> params;
+    const bool has_required_pw_client_version =
+        pw_client_version_ >= kDmaBufModifierMinVersion;
+    const bool has_required_pw_server_version =
+        pw_server_version_ >= kDmaBufModifierMinVersion;
+    for (uint32_t format : {SPA_VIDEO_FORMAT_BGRA, SPA_VIDEO_FORMAT_RGBA,
+                            SPA_VIDEO_FORMAT_BGRx, SPA_VIDEO_FORMAT_RGBx}) {
+      // Modifiers can be used with PipeWire >= 0.3.33
+      if (has_required_pw_client_version && has_required_pw_server_version) {
+        modifiers_ = egl_dmabuf_->QueryDmaBufModifiers(format);
+
+        if (!modifiers_.empty()) {
+          params.push_back(BuildFormat(&builder, format, modifiers_));
+        }
+      }
+
+      params.push_back(BuildFormat(&builder, format, /*modifiers=*/{}));
+    }
+
+    if (pw_stream_connect(pw_stream_, PW_DIRECTION_INPUT, pw_stream_node_id_,
+                          PW_STREAM_FLAG_AUTOCONNECT, params.data(),
+                          params.size()) != 0) {
+      RTC_LOG(LS_ERROR) << "Could not connect receiving stream.";
+      return false;
+    }
+
+    RTC_LOG(LS_INFO) << "PipeWire remote opened.";
+  }
+  return true;
+}
+
+void SharedScreenCastStreamPrivate::StopScreenCastStream() {
+  if (pw_stream_) {
+    pw_stream_disconnect(pw_stream_);
+  }
+}
+
+std::unique_ptr<DesktopFrame> SharedScreenCastStreamPrivate::CaptureFrame() {
+  webrtc::MutexLock lock(&queue_lock_);
+
+  if (!queue_.current_frame()) {
+    return std::unique_ptr<DesktopFrame>{};
+  }
+
+  std::unique_ptr<SharedDesktopFrame> frame = queue_.current_frame()->Share();
+  return std::move(frame);
+}
+
+std::unique_ptr<MouseCursor> SharedScreenCastStreamPrivate::CaptureCursor() {
+  if (!mouse_cursor_) {
+    return nullptr;
+  }
+
+  return std::move(mouse_cursor_);
+}
+
+DesktopVector SharedScreenCastStreamPrivate::CaptureCursorPosition() {
+  return mouse_cursor_position_;
+}
+
+void SharedScreenCastStreamPrivate::ProcessBuffer(pw_buffer* buffer) {
+  spa_buffer* spa_buffer = buffer->buffer;
+  ScopedBuf map;
+  std::unique_ptr<uint8_t[]> src_unique_ptr;
+  uint8_t* src = nullptr;
+
+  // Try to update the mouse cursor first, because it can be the only
+  // information carried by the buffer
+  {
+    const struct spa_meta_cursor* cursor =
+        static_cast<struct spa_meta_cursor*>(spa_buffer_find_meta_data(
+            spa_buffer, SPA_META_Cursor, sizeof(*cursor)));
+    if (cursor && spa_meta_cursor_is_valid(cursor)) {
+      struct spa_meta_bitmap* bitmap = nullptr;
+
+      if (cursor->bitmap_offset)
+        bitmap =
+            SPA_MEMBER(cursor, cursor->bitmap_offset, struct spa_meta_bitmap);
+
+      if (bitmap && bitmap->size.width > 0 && bitmap->size.height > 0) {
+        const uint8_t* bitmap_data =
+            SPA_MEMBER(bitmap, bitmap->offset, uint8_t);
+        BasicDesktopFrame* mouse_frame = new BasicDesktopFrame(
+            DesktopSize(bitmap->size.width, bitmap->size.height));
+        mouse_frame->CopyPixelsFrom(
+            bitmap_data, bitmap->stride,
+            DesktopRect::MakeWH(bitmap->size.width, bitmap->size.height));
+        mouse_cursor_ = std::make_unique<MouseCursor>(
+            mouse_frame, DesktopVector(cursor->hotspot.x, cursor->hotspot.y));
+      }
+      mouse_cursor_position_.set(cursor->position.x, cursor->position.y);
+    }
+  }
+
+  if (spa_buffer->datas[0].chunk->size == 0) {
+    return;
+  }
+
+  if (spa_buffer->datas[0].type == SPA_DATA_MemFd) {
+    map.initialize(
+        static_cast<uint8_t*>(
+            mmap(nullptr,
+                 spa_buffer->datas[0].maxsize + spa_buffer->datas[0].mapoffset,
+                 PROT_READ, MAP_PRIVATE, spa_buffer->datas[0].fd, 0)),
+        spa_buffer->datas[0].maxsize + spa_buffer->datas[0].mapoffset,
+        spa_buffer->datas[0].fd);
+
+    if (!map) {
+      RTC_LOG(LS_ERROR) << "Failed to mmap the memory: "
+                        << std::strerror(errno);
+      return;
+    }
+
+    src = SPA_MEMBER(map.get(), spa_buffer->datas[0].mapoffset, uint8_t);
+  } else if (spa_buffer->datas[0].type == SPA_DATA_DmaBuf) {
+    const uint n_planes = spa_buffer->n_datas;
+
+    if (!n_planes) {
+      return;
+    }
+
+    std::vector<EglDmaBuf::PlaneData> plane_datas;
+    for (uint32_t i = 0; i < n_planes; ++i) {
+      EglDmaBuf::PlaneData data = {
+          static_cast<int32_t>(spa_buffer->datas[i].fd),
+          static_cast<uint32_t>(spa_buffer->datas[i].chunk->stride),
+          static_cast<uint32_t>(spa_buffer->datas[i].chunk->offset)};
+      plane_datas.push_back(data);
+    }
+
+    src_unique_ptr = egl_dmabuf_->ImageFromDmaBuf(
+        desktop_size_, spa_video_format_.format, plane_datas, modifier_);
+    if (src_unique_ptr) {
+      src = src_unique_ptr.get();
+    } else {
+      RTC_LOG(LS_ERROR) << "Dropping DMA-BUF modifier: " << modifier_
+                        << " and trying to renegotiate stream parameters";
+
+      if (pw_client_version_ >= kDropSingleModifierMinVersion) {
+        modifiers_.erase(
+            std::remove(modifiers_.begin(), modifiers_.end(), modifier_),
+            modifiers_.end());
+      } else {
+        modifiers_.clear();
+      }
+
+      pw_loop_signal_event(pw_thread_loop_get_loop(pw_main_loop_),
+                           renegotiate_);
+      return;
+    }
+  } else if (spa_buffer->datas[0].type == SPA_DATA_MemPtr) {
+    src = static_cast<uint8_t*>(spa_buffer->datas[0].data);
+  }
+
+  if (!src) {
+    return;
+  }
+  struct spa_meta_region* video_metadata =
+      static_cast<struct spa_meta_region*>(spa_buffer_find_meta_data(
+          spa_buffer, SPA_META_VideoCrop, sizeof(*video_metadata)));
+
+  // Video size from metadata is bigger than an actual video stream size.
+  // The metadata are wrong or we should up-scale the video...in both cases
+  // just quit now.
+  if (video_metadata && (video_metadata->region.size.width >
+                             static_cast<uint32_t>(desktop_size_.width()) ||
+                         video_metadata->region.size.height >
+                             static_cast<uint32_t>(desktop_size_.height()))) {
+    RTC_LOG(LS_ERROR) << "Stream metadata sizes are wrong!";
+    return;
+  }
+
+  // Use video metadata when video size from metadata is set and smaller than
+  // video stream size, so we need to adjust it.
+  bool video_metadata_use = false;
+  const struct spa_rectangle* video_metadata_size =
+      video_metadata ? &video_metadata->region.size : nullptr;
+
+  if (video_metadata_size && video_metadata_size->width != 0 &&
+      video_metadata_size->height != 0 &&
+      (static_cast<int>(video_metadata_size->width) < desktop_size_.width() ||
+       static_cast<int>(video_metadata_size->height) <
+           desktop_size_.height())) {
+    video_metadata_use = true;
+  }
+
+  if (video_metadata_use) {
+    video_size_ =
+        DesktopSize(video_metadata_size->width, video_metadata_size->height);
+  } else {
+    video_size_ = desktop_size_;
+  }
+
+  uint32_t y_offset = video_metadata_use && (video_metadata->region.position.y +
+                                                 video_size_.height() <=
+                                             desktop_size_.height())
+                          ? video_metadata->region.position.y
+                          : 0;
+  uint32_t x_offset = video_metadata_use && (video_metadata->region.position.x +
+                                                 video_size_.width() <=
+                                             desktop_size_.width())
+                          ? video_metadata->region.position.x
+                          : 0;
+
+  uint8_t* updated_src = src + (spa_buffer->datas[0].chunk->stride * y_offset) +
+                         (kBytesPerPixel * x_offset);
+
+  webrtc::MutexLock lock(&queue_lock_);
+
+  // Move to the next frame if the current one is being used and shared
+  if (queue_.current_frame() && queue_.current_frame()->IsShared()) {
+    queue_.MoveToNextFrame();
+    if (queue_.current_frame() && queue_.current_frame()->IsShared()) {
+      RTC_LOG(LS_WARNING)
+          << "Failed to process PipeWire buffer: no available frame";
+      return;
+    }
+  }
+
+  if (!queue_.current_frame() ||
+      !queue_.current_frame()->size().equals(video_size_)) {
+    std::unique_ptr<DesktopFrame> frame(new BasicDesktopFrame(
+        DesktopSize(video_size_.width(), video_size_.height())));
+    queue_.ReplaceCurrentFrame(SharedDesktopFrame::Wrap(std::move(frame)));
+  }
+
+  queue_.current_frame()->CopyPixelsFrom(
+      updated_src,
+      (spa_buffer->datas[0].chunk->stride - (kBytesPerPixel * x_offset)),
+      DesktopRect::MakeWH(video_size_.width(), video_size_.height()));
+
+  if (spa_video_format_.format == SPA_VIDEO_FORMAT_RGBx ||
+      spa_video_format_.format == SPA_VIDEO_FORMAT_RGBA) {
+    uint8_t* tmp_src = queue_.current_frame()->data();
+    for (int i = 0; i < video_size_.height(); ++i) {
+      // If both sides decided to go with the RGBx format we need to convert
+      // it to BGRx to match color format expected by WebRTC.
+      ConvertRGBxToBGRx(tmp_src, queue_.current_frame()->stride());
+      tmp_src += queue_.current_frame()->stride();
+    }
+  }
+}
+
+void SharedScreenCastStreamPrivate::ConvertRGBxToBGRx(uint8_t* frame,
+                                                      uint32_t size) {
+  for (uint32_t i = 0; i < size; i += 4) {
+    uint8_t tempR = frame[i];
+    uint8_t tempB = frame[i + 2];
+    frame[i] = tempB;
+    frame[i + 2] = tempR;
+  }
+}
+
+SharedScreenCastStream::SharedScreenCastStream()
+    : private_(std::make_unique<SharedScreenCastStreamPrivate>()) {}
+
+SharedScreenCastStream::~SharedScreenCastStream() {}
+
+rtc::scoped_refptr<SharedScreenCastStream>
+SharedScreenCastStream::CreateDefault() {
+  // Explicit new, to access non-public constructor.
+  return rtc::scoped_refptr(new SharedScreenCastStream());
+}
+
+bool SharedScreenCastStream::StartScreenCastStream(uint32_t stream_node_id,
+                                                   int fd) {
+  return private_->StartScreenCastStream(stream_node_id, fd);
+}
+
+void SharedScreenCastStream::StopScreenCastStream() {
+  private_->StopScreenCastStream();
+}
+
+std::unique_ptr<DesktopFrame> SharedScreenCastStream::CaptureFrame() {
+  return private_->CaptureFrame();
+}
+
+std::unique_ptr<MouseCursor> SharedScreenCastStream::CaptureCursor() {
+  return private_->CaptureCursor();
+}
+
+absl::optional<DesktopVector> SharedScreenCastStream::CaptureCursorPosition() {
+  DesktopVector position = private_->CaptureCursorPosition();
+
+  // Consider only (x >= 0 and y >= 0) a valid position
+  if (position.x() < 0 || position.y() < 0) {
+    return absl::nullopt;
+  }
+
+  return position;
+}
+
+}  // namespace webrtc
diff --git a/third_party/libwebrtc/modules/desktop_capture/linux/shared_screencast_stream.h b/third_party/libwebrtc/modules/desktop_capture/linux/shared_screencast_stream.h
new file mode 100644
index 0000000..72411e5
--- /dev/null
+++ b/third_party/libwebrtc/modules/desktop_capture/linux/shared_screencast_stream.h
@@ -0,0 +1,71 @@
+/*
+ *  Copyright 2022 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#ifndef MODULES_DESKTOP_CAPTURE_LINUX_SHARED_SCREENCAST_STREAM_H_
+#define MODULES_DESKTOP_CAPTURE_LINUX_SHARED_SCREENCAST_STREAM_H_
+
+#include <memory>
+
+#include "absl/types/optional.h"
+#include "api/ref_counted_base.h"
+#include "api/scoped_refptr.h"
+#include "modules/desktop_capture/desktop_frame.h"
+#include "modules/desktop_capture/mouse_cursor.h"
+#include "rtc_base/system/rtc_export.h"
+
+namespace webrtc {
+
+class SharedScreenCastStreamPrivate;
+
+class RTC_EXPORT SharedScreenCastStream
+    : public rtc::RefCountedBase {
+ public:
+  static rtc::scoped_refptr<SharedScreenCastStream> CreateDefault();
+
+  bool StartScreenCastStream(uint32_t stream_node_id, int fd);
+  void StopScreenCastStream();
+
+  // Below functions return the most recent information we get from a
+  // PipeWire buffer on each Process() callback. This assumes that we
+  // managed to successfuly connect to a PipeWire stream provided by the
+  // compositor (based on stream parameters). The cursor data are obtained
+  // from spa_meta_cursor stream metadata and therefore the cursor is not
+  // part of actual screen/window frame.
+
+  // Returns the most recent screen/window frame we obtained from PipeWire
+  // buffer. Will return an empty frame in case we didn't manage to get a frame
+  // from PipeWire buffer.
+  std::unique_ptr<DesktopFrame> CaptureFrame();
+
+  // Returns the most recent mouse cursor image. Will return an nullptr cursor
+  // in case we didn't manage to get a cursor from PipeWire buffer. NOTE: the
+  // cursor image might not be updated on every cursor location change, but
+  // actually only when its shape changes.
+  std::unique_ptr<MouseCursor> CaptureCursor();
+
+  // Returns the most recent mouse cursor position. Will not return a value in
+  // case we didn't manage to get it from PipeWire buffer.
+  absl::optional<DesktopVector> CaptureCursorPosition();
+
+  ~SharedScreenCastStream();
+
+ protected:
+  SharedScreenCastStream();
+
+ private:
+  SharedScreenCastStream(const SharedScreenCastStream&) = delete;
+  SharedScreenCastStream& operator=(const SharedScreenCastStream&) = delete;
+
+  std::unique_ptr<SharedScreenCastStreamPrivate> private_;
+};
+
+}  // namespace webrtc
+
+#endif  // MODULES_DESKTOP_CAPTURE_LINUX_SHARED_SCREENCAST_STREAM_H_
diff --git a/third_party/libwebrtc/modules/desktop_capture/linux/window_capturer_pipewire.cc b/third_party/libwebrtc/modules/desktop_capture/linux/window_capturer_pipewire.cc
deleted file mode 100644
index c43a1f1..0000000
--- a/third_party/libwebrtc/modules/desktop_capture/linux/window_capturer_pipewire.cc
+++ /dev/null
@@ -1,28 +0,0 @@
-/*
- *  Copyright 2018 The WebRTC project authors. All Rights Reserved.
- *
- *  Use of this source code is governed by a BSD-style license
- *  that can be found in the LICENSE file in the root of the source
- *  tree. An additional intellectual property rights grant can be found
- *  in the file PATENTS.  All contributing project authors may
- *  be found in the AUTHORS file in the root of the source tree.
- */
-
-#include "modules/desktop_capture/linux/window_capturer_pipewire.h"
-
-#include <memory>
-
-namespace webrtc {
-
-WindowCapturerPipeWire::WindowCapturerPipeWire()
-    : BaseCapturerPipeWire(BaseCapturerPipeWire::CaptureSourceType::kWindow) {}
-WindowCapturerPipeWire::~WindowCapturerPipeWire() {}
-
-// static
-std::unique_ptr<DesktopCapturer>
-WindowCapturerPipeWire::CreateRawWindowCapturer(
-    const DesktopCaptureOptions& options) {
-  return std::make_unique<WindowCapturerPipeWire>();
-}
-
-}  // namespace webrtc
diff --git a/third_party/libwebrtc/modules/desktop_capture/linux/window_capturer_pipewire.h b/third_party/libwebrtc/modules/desktop_capture/linux/window_capturer_pipewire.h
deleted file mode 100644
index 7f184ef..0000000
--- a/third_party/libwebrtc/modules/desktop_capture/linux/window_capturer_pipewire.h
+++ /dev/null
@@ -1,33 +0,0 @@
-/*
- *  Copyright 2018 The WebRTC project authors. All Rights Reserved.
- *
- *  Use of this source code is governed by a BSD-style license
- *  that can be found in the LICENSE file in the root of the source
- *  tree. An additional intellectual property rights grant can be found
- *  in the file PATENTS.  All contributing project authors may
- *  be found in the AUTHORS file in the root of the source tree.
- */
-
-#ifndef MODULES_DESKTOP_CAPTURE_LINUX_WINDOW_CAPTURER_PIPEWIRE_H_
-#define MODULES_DESKTOP_CAPTURE_LINUX_WINDOW_CAPTURER_PIPEWIRE_H_
-
-#include <memory>
-
-#include "modules/desktop_capture/linux/base_capturer_pipewire.h"
-
-namespace webrtc {
-
-class WindowCapturerPipeWire : public BaseCapturerPipeWire {
- public:
-  WindowCapturerPipeWire();
-  ~WindowCapturerPipeWire() override;
-
-  static std::unique_ptr<DesktopCapturer> CreateRawWindowCapturer(
-      const DesktopCaptureOptions& options);
-
-  RTC_DISALLOW_COPY_AND_ASSIGN(WindowCapturerPipeWire);
-};
-
-}  // namespace webrtc
-
-#endif  // MODULES_DESKTOP_CAPTURE_LINUX_WINDOW_CAPTURER_PIPEWIRE_H_
diff --git a/third_party/libwebrtc/modules/desktop_capture/mouse_cursor_monitor_linux.cc b/third_party/libwebrtc/modules/desktop_capture/mouse_cursor_monitor_linux.cc
index e569f6e..3bb51e8 100644
--- a/third_party/libwebrtc/modules/desktop_capture/mouse_cursor_monitor_linux.cc
+++ b/third_party/libwebrtc/modules/desktop_capture/mouse_cursor_monitor_linux.cc
@@ -17,6 +17,10 @@
 #include "modules/desktop_capture/linux/mouse_cursor_monitor_x11.h"
 #endif  // defined(WEBRTC_USE_X11)
 
+#if defined(WEBRTC_USE_PIPEWIRE)
+#include "modules/desktop_capture/linux/mouse_cursor_monitor_pipewire.h"
+#endif  // defined(WEBRTC_USE_PIPEWIRE)
+
 namespace webrtc {
 
 // static
@@ -44,6 +48,13 @@ MouseCursorMonitor* MouseCursorMonitor::CreateForScreen(
 // static
 std::unique_ptr<MouseCursorMonitor> MouseCursorMonitor::Create(
     const DesktopCaptureOptions& options) {
+#if defined(WEBRTC_USE_PIPEWIRE)
+  if (options.allow_pipewire() && DesktopCapturer::IsRunningUnderWayland() &&
+      options.screencast_stream()) {
+    return std::make_unique<MouseCursorMonitorPipeWire>(options);
+  }
+#endif  // defined(WEBRTC_USE_PIPEWIRE)
+
 #if defined(WEBRTC_USE_X11)
   return MouseCursorMonitorX11::Create(options);
 #else
diff --git a/third_party/libwebrtc/modules/desktop_capture/screen_capturer_linux.cc b/third_party/libwebrtc/modules/desktop_capture/screen_capturer_linux.cc
index 57a2002..b44ae35 100644
--- a/third_party/libwebrtc/modules/desktop_capture/screen_capturer_linux.cc
+++ b/third_party/libwebrtc/modules/desktop_capture/screen_capturer_linux.cc
@@ -14,7 +14,7 @@
 #include "modules/desktop_capture/desktop_capturer.h"
 
 #if defined(WEBRTC_USE_PIPEWIRE)
-#include "modules/desktop_capture/linux/screen_capturer_pipewire.h"
+#include "modules/desktop_capture/linux/base_capturer_pipewire.h"
 #endif  // defined(WEBRTC_USE_PIPEWIRE)
 
 #if defined(WEBRTC_USE_X11)
@@ -28,7 +28,7 @@ std::unique_ptr<DesktopCapturer> DesktopCapturer::CreateRawScreenCapturer(
     const DesktopCaptureOptions& options) {
 #if defined(WEBRTC_USE_PIPEWIRE)
   if (options.allow_pipewire() && DesktopCapturer::IsRunningUnderWayland()) {
-    return BaseCapturerPipeWire::CreateRawScreenCapturer(options);
+    return std::make_unique<BaseCapturerPipeWire>(options);
   }
 #endif  // defined(WEBRTC_USE_PIPEWIRE)
 
diff --git a/third_party/libwebrtc/modules/desktop_capture/window_capturer_linux.cc b/third_party/libwebrtc/modules/desktop_capture/window_capturer_linux.cc
index ed03ba0..3bc6577 100644
--- a/third_party/libwebrtc/modules/desktop_capture/window_capturer_linux.cc
+++ b/third_party/libwebrtc/modules/desktop_capture/window_capturer_linux.cc
@@ -14,7 +14,7 @@
 #include "modules/desktop_capture/desktop_capturer.h"
 
 #if defined(WEBRTC_USE_PIPEWIRE)
-#include "modules/desktop_capture/linux/window_capturer_pipewire.h"
+#include "modules/desktop_capture/linux/base_capturer_pipewire.h"
 #endif  // defined(WEBRTC_USE_PIPEWIRE)
 
 #if defined(WEBRTC_USE_X11)
@@ -28,7 +28,7 @@ std::unique_ptr<DesktopCapturer> DesktopCapturer::CreateRawWindowCapturer(
     const DesktopCaptureOptions& options) {
 #if defined(WEBRTC_USE_PIPEWIRE)
   if (options.allow_pipewire() && DesktopCapturer::IsRunningUnderWayland()) {
-    return BaseCapturerPipeWire::CreateRawWindowCapturer(options);
+    return std::make_unique<BaseCapturerPipeWire>(options);
   }
 #endif  // defined(WEBRTC_USE_PIPEWIRE)
 
diff --git a/third_party/moz.build b/third_party/moz.build
index 1941c11..f804531 100644
--- a/third_party/moz.build
+++ b/third_party/moz.build
@@ -49,6 +49,12 @@ with Files("libwebrtc/**"):
 with Files("pipewire/**"):
     BUG_COMPONENT = ("Core", "WebRTC")
 
+with Files("drm/**"):
+    BUG_COMPONENT = ("Core", "WebRTC")
+
+with Files("gbm/**"):
+    BUG_COMPONENT = ("Core", "WebRTC")
+
 with Files('rlbox_wasm2c_sandbox/**'):
     BUG_COMPONENT = ('Firefox Build System', 'General')
 
diff --git a/third_party/pipewire/libpipewire/mozpipewire.cpp b/third_party/pipewire/libpipewire/mozpipewire.cpp
index 1ecfc31..fbeeb8e 100644
--- a/third_party/pipewire/libpipewire/mozpipewire.cpp
+++ b/third_party/pipewire/libpipewire/mozpipewire.cpp
@@ -69,11 +69,13 @@ static int (*pw_stream_connect_fn)(struct pw_stream *stream,
                                 enum pw_stream_flags flags,
                                 const struct spa_pod **params,
                                 uint32_t n_params);
+static int (*pw_stream_disconnect_fn)(struct pw_stream *stream);
 static struct pw_buffer* (*pw_stream_dequeue_buffer_fn)(struct pw_stream *stream);
 static void (*pw_stream_destroy_fn)(struct pw_stream *stream);
 static struct pw_stream* (*pw_stream_new_fn)(struct pw_core *core,
                                           const char *name,
                                           struct pw_properties *props);
+
 static int (*pw_stream_queue_buffer_fn)(struct pw_stream *stream,
                                      struct pw_buffer *buffer);
 static int (*pw_stream_update_params_fn)(struct pw_stream *stream,
@@ -87,7 +89,10 @@ static int (*pw_thread_loop_start_fn)(struct pw_thread_loop *loop);
 static void (*pw_thread_loop_stop_fn)(struct pw_thread_loop *loop);
 static void (*pw_thread_loop_lock_fn)(struct pw_thread_loop *loop);
 static void (*pw_thread_loop_unlock_fn)(struct pw_thread_loop *loop);
+static void (*pw_thread_loop_wait_fn)(struct pw_thread_loop *loop);
+static void (*pw_thread_loop_signal_fn)(struct pw_thread_loop *loop, bool wait_for_accept);
 static struct pw_properties* (*pw_properties_new_string_fn)(const char *str);
+static const char* (*pw_get_library_version_fn)();
 
 bool IsPwLibraryLoaded() {
   static bool isLoaded =
@@ -99,6 +104,7 @@ bool IsPwLibraryLoaded() {
           IS_FUNC_LOADED(pw_init_fn) &&
           IS_FUNC_LOADED(pw_stream_add_listener_fn) &&
           IS_FUNC_LOADED(pw_stream_connect_fn) &&
+          IS_FUNC_LOADED(pw_stream_disconnect_fn) &&
           IS_FUNC_LOADED(pw_stream_dequeue_buffer_fn) &&
           IS_FUNC_LOADED(pw_stream_destroy_fn) &&
           IS_FUNC_LOADED(pw_stream_new_fn) &&
@@ -111,7 +117,10 @@ bool IsPwLibraryLoaded() {
           IS_FUNC_LOADED(pw_thread_loop_stop_fn) &&
           IS_FUNC_LOADED(pw_thread_loop_lock_fn) &&
           IS_FUNC_LOADED(pw_thread_loop_unlock_fn) &&
-          IS_FUNC_LOADED(pw_properties_new_string_fn));
+          IS_FUNC_LOADED(pw_thread_loop_signal_fn) &&
+          IS_FUNC_LOADED(pw_thread_loop_wait_fn) &&
+          IS_FUNC_LOADED(pw_properties_new_string_fn) &&
+          IS_FUNC_LOADED(pw_get_library_version_fn));
 
   return isLoaded;
 }
@@ -136,6 +145,7 @@ bool LoadPWLibrary() {
     GET_FUNC(pw_init, pwLib);
     GET_FUNC(pw_stream_add_listener, pwLib);
     GET_FUNC(pw_stream_connect, pwLib);
+    GET_FUNC(pw_stream_disconnect, pwLib);
     GET_FUNC(pw_stream_dequeue_buffer, pwLib);
     GET_FUNC(pw_stream_destroy, pwLib);
     GET_FUNC(pw_stream_new, pwLib);
@@ -148,7 +158,10 @@ bool LoadPWLibrary() {
     GET_FUNC(pw_thread_loop_stop, pwLib);
     GET_FUNC(pw_thread_loop_lock, pwLib);
     GET_FUNC(pw_thread_loop_unlock, pwLib);
+    GET_FUNC(pw_thread_loop_signal, pwLib);
+    GET_FUNC(pw_thread_loop_wait, pwLib);
     GET_FUNC(pw_properties_new_string, pwLib);
+    GET_FUNC(pw_get_library_version, pwLib);
   }
 
   return IsPwLibraryLoaded();
@@ -242,6 +255,15 @@ pw_stream_connect(struct pw_stream *stream,
                               params, n_params);
 }
 
+int
+pw_stream_disconnect(struct pw_stream *stream)
+{
+  if (!LoadPWLibrary()) {
+    return 0;
+  }
+  return pw_stream_disconnect_fn(stream);
+}
+
 struct pw_buffer *
 pw_stream_dequeue_buffer(struct pw_stream *stream)
 {
@@ -356,6 +378,23 @@ pw_thread_loop_unlock(struct pw_thread_loop *loop)
   return pw_thread_loop_unlock_fn(loop);
 }
 
+void
+pw_thread_loop_signal(struct pw_thread_loop *loop, bool wait_for_accept)
+{
+  if (!LoadPWLibrary()) {
+    return;
+  }
+  return pw_thread_loop_signal_fn(loop, wait_for_accept);
+}
+
+void
+pw_thread_loop_wait(struct pw_thread_loop *loop)
+{
+  if (!LoadPWLibrary()) {
+    return;
+  }
+  return pw_thread_loop_wait_fn(loop);
+}
 
 struct pw_properties *
 pw_properties_new_string(const char *str)
@@ -366,3 +405,12 @@ pw_properties_new_string(const char *str)
   return pw_properties_new_string_fn(str);
 }
 
+const char*
+pw_get_library_version()
+{
+  if (!LoadPWLibrary()) {
+    return nullptr;
+  }
+  return pw_get_library_version_fn();
+}
+