MJPEG acceleration for video capture using VAAPI

media/video/capture/video_capture_device.h

Index: media/video/capture/video_capture_device.h
diff --git a/media/video/capture/video_capture_device.h b/media/video/capture/video_capture_device.h
index d3dfe7289fd76eee835375d17279f4b23e75c906..b1a2449fa4b1c4e38900f720b456f0ce1db31867 100644
--- a/media/video/capture/video_capture_device.h
+++ b/media/video/capture/video_capture_device.h
@@ -203,6 +203,7 @@ class MEDIA_EXPORT VideoCaptureDevice {
       virtual size_t size() const = 0;
       virtual void* data() = 0;
       virtual ClientBuffer AsClientBuffer() = 0;
+      virtual base::SharedMemoryHandle AsPlatformHandle() = 0;

[mcasas, 2015/05/07 00:59:03]

Can you use base::PlatformFile instead of base::SharedMemoryHandle.

The implementation would be something like:
base::PlatformFile AsPlatformFile() override {
#if defined(OS_POSIX)
  return shared_memory_.handle().fd;
#else
  return shared_memory_.handle();
#endif
}

The point being that, in the immediate future, not all Buffers
will be memory backed, some will be Ozone Native Buffers,
and those have no SharedMemoryHandle. See [1].

[1]
https://code.google.com/p/chromium/codesearch#chromium/src/content/browser/re...

[kcwu, 2015/05/08 14:42:43]

Done.
I'm not sure my GpuMemoryBufferBufferHandle::AsPlatformHandle() is correct or
not. Please take a look.

     };
 
     virtual ~Client() {}