talk/media/base/mutedvideocapturer.h

/*
 * libjingle
 * Copyright 2012 Google Inc.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *  1. Redistributions of source code must retain the above copyright notice,
 *     this list of conditions and the following disclaimer.
 *  2. Redistributions in binary form must reproduce the above copyright notice,
 *     this list of conditions and the following disclaimer in the documentation
 *     and/or other materials provided with the distribution.
 *  3. The name of the author may not be used to endorse or promote products
 *     derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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 */

#ifndef TALK_MEDIA_BASE_MUTEDVIDEOCAPTURER_H_
#define TALK_MEDIA_BASE_MUTEDVIDEOCAPTURER_H_

#include "talk/base/thread.h"
#include "talk/media/base/videocapturer.h"

namespace cricket {

class MutedFramesGenerator;

class MutedVideoCapturer : public VideoCapturer {
 public:
  static const char kCapturerId[];

  MutedVideoCapturer();
  virtual ~MutedVideoCapturer();
  virtual bool GetBestCaptureFormat(const VideoFormat& desired,
                                    VideoFormat* best_format);
  virtual CaptureState Start(const VideoFormat& capture_format);
  virtual void Stop();
  virtual bool IsRunning();
  virtual bool IsScreencast() const { return false; }
  virtual bool GetPreferredFourccs(std::vector<uint32>* fourccs);

 protected:
  void OnMutedFrame(VideoFrame* muted_frame);

  talk_base::scoped_ptr<MutedFramesGenerator> frame_generator_;
};

}  // namespace cricket

#endif  // TALK_MEDIA_BASE_MUTEDVIDEOCAPTURER_H_