Integrate VDA with WebRTC.

content/renderer/media/rtc_video_decoder_factory.h

+// Copyright (c) 2013 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CONTENT_RENDERER_MEDIA_RTC_VIDEO_DECODER_FACTORY_H_
+#define CONTENT_RENDERER_MEDIA_RTC_VIDEO_DECODER_FACTORY_H_
+
+#include "base/message_loop_proxy.h"
+#include "base/threading/thread.h"
+#include "content/common/content_export.h"
+#include "third_party/libjingle/source/talk/media/webrtc/webrtcvideodecoderfactory.h"
+
+namespace webrtc {
+class VideoDecoder;
+}
+
+namespace content {
+class RendererGpuVideoDecoderFactories;
+
+class CONTENT_EXPORT RTCVideoDecoderFactory

[Ami GONE FROM CHROMIUM, 2013/06/11 23:48:05]

Add a TODO to merge with RTCVideoDecoderFactoryTv ?

[wuchengli, 2013/06/13 10:28:07]

Ditto.

+    : NON_EXPORTED_BASE(public cricket::WebRtcVideoDecoderFactory) {

[Ami GONE FROM CHROMIUM, 2013/06/11 23:48:05]

nit: colon goes on previous line (unlike in webkit/blink)

[wuchengli, 2013/06/13 10:28:07]

Ditto. It goes on previous line if the parent class fits the same line.

+ public:
+  RTCVideoDecoderFactory(

[Ami GONE FROM CHROMIUM, 2013/06/11 23:48:05]

Doco ownership transfer of |vda_thread|.

[wuchengli, 2013/06/13 10:28:07]

Changed the argument type to scoped_ptr<base::Thread> to make it clear.

+      const scoped_refptr<RendererGpuVideoDecoderFactories>& gpu_factories,
+      base::Thread* vda_thread);
+
+  // Runs on Chrome_libJingle_WorkerThread and blocks child thread.

[Ami GONE FROM CHROMIUM, 2013/06/11 23:48:05]

here and below do you mean "blocks until child thread services request"?

[wuchengli, 2013/06/13 10:28:07]

I meant the child thread blocks on this completing. I've changed the comment. Is
it clear?

+  virtual webrtc::VideoDecoder* CreateVideoDecoder(
+      webrtc::VideoCodecType type) OVERRIDE;
+
+  // Runs on Chrome_libJingle_WorkerThread and blocks child thread.
+  virtual void DestroyVideoDecoder(webrtc::VideoDecoder* decoder) OVERRIDE;
+
+ private:
+  scoped_refptr<RendererGpuVideoDecoderFactories> gpu_factories_;
+  scoped_ptr<base::Thread> vda_thread_;
+
+  DISALLOW_COPY_AND_ASSIGN(RTCVideoDecoderFactory);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_RENDERER_MEDIA_RTC_VIDEO_DECODER_FACTORY_H_