Move talk/app/webrtc to webrtc/api

webrtc/api/videotrackrenderers.h

+/*
+ *  Copyright 2012 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#ifndef WEBRTC_API_VIDEOTRACKRENDERERS_H_
+#define WEBRTC_API_VIDEOTRACKRENDERERS_H_
+
+#include <set>
+
+#include "talk/media/base/videorenderer.h"
+#include "webrtc/api/mediastreaminterface.h"
+#include "webrtc/base/criticalsection.h"
+#include "webrtc/base/scoped_ptr.h"
+
+namespace webrtc {
+
+// Class used for rendering cricket::VideoFrames to multiple renderers of type
+// VideoRendererInterface.
+// Each VideoTrack owns a VideoTrackRenderers instance.
+// The class is thread safe. Rendering to the added VideoRendererInterfaces is
+// done on the same thread as the cricket::VideoRenderer.
+class VideoTrackRenderers : public cricket::VideoRenderer {
+ public:
+  VideoTrackRenderers();
+  ~VideoTrackRenderers();
+
+  // Implements cricket::VideoRenderer. If the track is disabled,
+  // incoming frames are replaced by black frames.
+  virtual bool RenderFrame(const cricket::VideoFrame* frame);
+
+  void AddRenderer(VideoRendererInterface* renderer);
+  void RemoveRenderer(VideoRendererInterface* renderer);
+  void SetEnabled(bool enable);
+
+ private:
+  // Pass the frame on to to each registered renderer. Requires
+  // critical_section_ already locked.
+  void RenderFrameToRenderers(const cricket::VideoFrame* frame);
+
+  bool enabled_;
+  std::set<VideoRendererInterface*> renderers_;
+
+  rtc::CriticalSection critical_section_;  // Protects the above variables
+};
+
+}  // namespace webrtc
+
+#endif  // WEBRTC_API_VIDEOTRACKRENDERERS_H_