Added fix for mzbz#1678680

1 files changed, 73 insertions, 0 deletions

diff --git a/mozilla-1678680.patch b/mozilla-1678680.patch
new file mode 100644
index 0000000..5c4953a
--- /dev/null
+++ b/mozilla-1678680.patch
@@ -0,0 +1,73 @@
+changeset:   560838:7a5a1784b5d1
+tag:         tip
+parent:      560835:7184fb5a42fb
+user:        Martin Stransky <stransky@redhat.com>
+date:        Fri Nov 27 17:29:07 2020 +0100
+files:       third_party/libwebrtc/webrtc/modules/desktop_capture/linux/base_capturer_pipewire.cc third_party/libwebrtc/webrtc/modules/desktop_capture/linux/base_capturer_pipewire.h
+description:
+Bug 1678680 [PipeWire] Lock current_frame_ access as it can be used from multiple threads, r?dminor
+
+Differential Revision: https://phabricator.services.mozilla.com/D98080
+
+
+diff --git a/third_party/libwebrtc/webrtc/modules/desktop_capture/linux/base_capturer_pipewire.cc b/third_party/libwebrtc/webrtc/modules/desktop_capture/linux/base_capturer_pipewire.cc
+--- a/third_party/libwebrtc/webrtc/modules/desktop_capture/linux/base_capturer_pipewire.cc
++++ b/third_party/libwebrtc/webrtc/modules/desktop_capture/linux/base_capturer_pipewire.cc
+@@ -396,16 +396,17 @@ void BaseCapturerPipeWire::HandleBuffer(
+   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_;
+   }
+ 
++  rtc::CritScope lock(&current_frame_lock_);
+   if (!current_frame_ ||
+       (video_metadata_use_ && !video_size_.equals(video_size_prev))) {
+     current_frame_ =
+       std::make_unique<uint8_t[]>
+         (video_size_.width() * video_size_.height() * kBytesPerPixel);
+   }
+ 
+   const int32_t dstStride = video_size_.width() * kBytesPerPixel;
+@@ -872,16 +873,17 @@ void BaseCapturerPipeWire::Start(Callbac
+ }
+ 
+ void BaseCapturerPipeWire::CaptureFrame() {
+   if (portal_init_failed_) {
+     callback_->OnCaptureResult(Result::ERROR_PERMANENT, nullptr);
+     return;
+   }
+ 
++  rtc::CritScope 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_;
+diff --git a/third_party/libwebrtc/webrtc/modules/desktop_capture/linux/base_capturer_pipewire.h b/third_party/libwebrtc/webrtc/modules/desktop_capture/linux/base_capturer_pipewire.h
+--- a/third_party/libwebrtc/webrtc/modules/desktop_capture/linux/base_capturer_pipewire.h
++++ b/third_party/libwebrtc/webrtc/modules/desktop_capture/linux/base_capturer_pipewire.h
+@@ -79,16 +79,17 @@ class BaseCapturerPipeWire : public Desk
+   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_ = {};
+ 
++  rtc::CriticalSection current_frame_lock_;
+   std::unique_ptr<uint8_t[]> current_frame_;
+   Callback* callback_ = nullptr;
+ 
+   bool portal_init_failed_ = false;
+ 
+   void InitPortal();
+   void InitPipeWire();
+ 
+