Implement WebRTC in Chrome for TV

content/renderer/media/rtc_video_decoder_bridge_tv.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_BRIDGE_TV_H_
+#define CONTENT_RENDERER_MEDIA_RTC_VIDEO_DECODER_BRIDGE_TV_H_
+
+#include "base/basictypes.h"
+#include "base/message_loop_proxy.h"
+#include "content/common/content_export.h"
+#include "media/base/audio_decoder_config.h"
+#include "media/base/decoder_buffer_queue.h"
+#include "media/base/demuxer.h"
+#include "media/base/demuxer_stream.h"
+#include "media/base/pipeline_status.h"
+#include "media/base/video_decoder_config.h"
+#include "third_party/webrtc/modules/video_coding/codecs/interface/video_codec_interface.h"
+
+namespace content {
+
+class RTCDemuxerProxy;
+
+class RTCDemuxer : public media::Demuxer {
+ public:
+  RTCDemuxer(const scoped_refptr<base::MessageLoopProxy>& message_loop);
+  virtual ~RTCDemuxer();
+
+  // media::Demuxer implementation.
+  virtual void Initialize(media::DemuxerHost* host,
+                          const media::PipelineStatusCB& cb) OVERRIDE;
+  virtual media::DemuxerStream* GetStream(
+      media::DemuxerStream::Type type) OVERRIDE;
+  virtual base::TimeDelta GetStartTime() const OVERRIDE;
+
+  void UpdateSize(const gfx::Size& size);
+  void QueueBuffer(scoped_refptr<media::DecoderBuffer> buffer,
+                   const base::Closure& done_cb);
+
+ private:
+  friend class RTCVideoDecoderBridgeTv;
+
+  scoped_refptr<RTCDemuxerProxy> proxy_;
+};
+
+// A singleton object that shared between WebMediaPlayerAndroid and WebRTC
+// Video Engine. Note that this class provides the first remote stream.
+//
+// Example use case:
+// scoped_refptr<RTCDemuxer> remote_stream =
+//     new RTCDemuxer(base::MessageLoopProxy::current());
+// if (RTCVideoDecoderBridgeTv::Get()->RegisterDemuxer(
+//     remote_stream)) {
+//   // use |remote_stream|.
+// }
+class CONTENT_EXPORT RTCVideoDecoderBridgeTv
+    : NON_EXPORTED_BASE(public webrtc::VideoDecoder) {
+ public:
+  // Get RTCVideoDecoderBridgeTv singleton object. If it was not set
+  // before, new default instance will be created.
+  static RTCVideoDecoderBridgeTv* Get();
+
+  virtual bool RegisterDemuxer(RTCDemuxer* demuxer) = 0;
+
+  virtual bool AcquireOwnership() = 0;
+  virtual void ReleaseOwnership() = 0;
+};
+
+}  // namespace content
+
+#endif  // CONTENT_RENDERER_MEDIA_RTC_VIDEO_DECODER_BRIDGE_TV_H_