Add accelerated video decoder interface, VP8 and H.264 implementations and hook up to V4L2SVDA.

content/common/gpu/media/v4l2_video_decode_accelerator.h

Index: content/common/gpu/media/v4l2_video_decode_accelerator.h
diff --git a/content/common/gpu/media/v4l2_video_decode_accelerator.h b/content/common/gpu/media/v4l2_video_decode_accelerator.h
index c6da742fc5491e9bdcbdfd9a965bd26c9dd4d84f..aeb94deac64016fd9eb435171f64067074e3f9f3 100644
--- a/content/common/gpu/media/v4l2_video_decode_accelerator.h
+++ b/content/common/gpu/media/v4l2_video_decode_accelerator.h
@@ -14,6 +14,7 @@
 
 #include "base/callback_forward.h"
 #include "base/memory/linked_ptr.h"
+#include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/synchronization/waitable_event.h"
 #include "base/threading/thread.h"
@@ -80,7 +81,7 @@ class CONTENT_EXPORT V4L2VideoDecodeAccelerator
       EGLContext egl_context,
       const base::WeakPtr<Client>& io_client_,
       const base::Callback<bool(void)>& make_context_current,
-      scoped_ptr<V4L2Device> device,
+      scoped_refptr<V4L2Device> device,

[scherkus (not reviewing), 2015/01/13 01:25:00]

const ref

[Pawel Osciak, 2015/01/13 11:33:35]

Done.

       const scoped_refptr<base::MessageLoopProxy>& io_message_loop_proxy);
   virtual ~V4L2VideoDecodeAccelerator();
 
@@ -261,9 +262,8 @@ class CONTENT_EXPORT V4L2VideoDecodeAccelerator
   // Error notification (using PostTask() to child thread, if necessary).
   void NotifyError(Error error);
 
-  // Set the decoder_thread_ state (using PostTask to decoder thread, if
-  // necessary).
-  void SetDecoderState(State state);
+  // Set the decoder_state_ to kError and notify the client (if necessary).
+  void SetErrorState(Error error);
 
   //
   // Other utility functions.  Called on decoder_thread_, unless
@@ -341,7 +341,7 @@ class CONTENT_EXPORT V4L2VideoDecodeAccelerator
   // BitstreamBuffer we're presently reading.
   scoped_ptr<BitstreamBufferRef> decoder_current_bitstream_buffer_;
   // The V4L2Device this class is operating upon.
-  scoped_ptr<V4L2Device> device_;
+  scoped_refptr<V4L2Device> device_;
   // FlushTask() and ResetTask() should not affect buffers that have been
   // queued afterwards.  For flushing or resetting the pipeline then, we will
   // delay these buffers until after the flush or reset completes.