Implements MediaStreamVideoSource.

content/renderer/media/webrtc/webrtc_video_source_adapter.h

+// Copyright 2014 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_WEBRTC_WEBRTC_VIDEO_SOURCE_ADAPTER_H_
+#define CONTENT_RENDERER_MEDIA_WEBRTC_WEBRTC_VIDEO_SOURCE_ADAPTER_H_
+
+#include "base/memory/ref_counted.h"
+#include "content/common/content_export.h"
+#include "content/renderer/media/webrtc/webrtc_video_source.h"
+#include "third_party/WebKit/public/platform/WebMediaConstraints.h"
+#include "third_party/WebKit/public/platform/WebMediaStreamTrack.h"
+#include "third_party/libjingle/source/talk/base/scoped_ref_ptr.h"
+
+namespace media {
+class VideoFrame;
+}
+
+namespace content {
+
+class MediaStreamDependencyFactory;
+
+// WebRtcVideoSourceAdapter acts as the middle man between a
+// webrtc:::VideoTrackInterface and a content::MediaStreamVideoSource.
+// WebRtcVideoSourceAdapter creates native track for the given
+// blink::WebMediaStreamTrack and expose an interface for MediaStreamVideoSource
+// to feed video frames to the new native track.
+class CONTENT_EXPORT WebRtcVideoSourceAdapter {
+ public:
+  WebRtcVideoSourceAdapter(const blink::WebMediaStreamTrack& track,
+                           const blink::WebMediaConstraints& constraints,
+                           MediaStreamDependencyFactory* factory);
+  virtual ~WebRtcVideoSourceAdapter();
+
+  bool Init();
+
+  void DeliverVideoFrame(const scoped_refptr<media::VideoFrame>& frame);
+
+  const blink::WebMediaStreamTrack& track() const { return track_; }
+  const blink::WebMediaConstraints& constraints() const { return constraints_; }
+
+ private:
+  blink::WebMediaStreamTrack track_;
+  blink::WebMediaConstraints constraints_;
+  MediaStreamDependencyFactory* factory_;
+  talk_base::scoped_refptr<WebRtcVideoSource> native_source_;
+};
+
+}  // namespace content
+
+#endif  // CONTENT_RENDERER_MEDIA_WEBRTC_WEBRTC_VIDEO_SINK_ADAPTER_H_