Revert of Make cricket::VideoCapturer implement VideoSourceInterface

webrtc/media/base/capturerenderadapter.h

+/*
+ *  Copyright (c) 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.
+ */
+
+// This file contains the class CaptureRenderAdapter. The class connects a
+// VideoCapturer to any number of VideoRenders such that the former feeds the
+// latter.
+// CaptureRenderAdapter is Thread-unsafe. This means that none of its APIs may
+// be called concurrently.
+
+#ifndef WEBRTC_MEDIA_BASE_CAPTURERENDERADAPTER_H_
+#define WEBRTC_MEDIA_BASE_CAPTURERENDERADAPTER_H_
+
+#include <vector>
+
+#include "webrtc/base/criticalsection.h"
+#include "webrtc/base/sigslot.h"
+#include "webrtc/media/base/videocapturer.h"
+#include "webrtc/media/base/videosinkinterface.h"
+
+namespace cricket {
+
+class VideoCapturer;
+class VideoProcessor;
+
+class CaptureRenderAdapter : public sigslot::has_slots<> {
+ public:
+  static CaptureRenderAdapter* Create(VideoCapturer* video_capturer);
+  ~CaptureRenderAdapter();
+
+  void AddSink(rtc::VideoSinkInterface<VideoFrame>* sink);
+  void RemoveSink(rtc::VideoSinkInterface<VideoFrame>* sink);
+
+  VideoCapturer* video_capturer() { return video_capturer_; }
+ private:
+
+  explicit CaptureRenderAdapter(VideoCapturer* video_capturer);
+  void Init();
+
+  // Callback for frames received from the capturer.
+  void OnVideoFrame(VideoCapturer* capturer, const VideoFrame* video_frame);
+
+  // Just pointers since ownership is not handed over to this class.
+  std::vector<rtc::VideoSinkInterface<VideoFrame>*> sinks_;
+  VideoCapturer* video_capturer_;
+  // Critical section synchronizing the capture thread.
+  rtc::CriticalSection capture_crit_;
+};
+
+}  // namespace cricket
+
+#endif  // WEBRTC_MEDIA_BASE_CAPTURERENDERADAPTER_H_