49 lines
1.5 KiB
C++
49 lines
1.5 KiB
C++
/*
|
|
* Copyright 2015 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 PC_MEDIA_STREAM_OBSERVER_H_
|
|
#define PC_MEDIA_STREAM_OBSERVER_H_
|
|
|
|
#include "api/media_stream_interface.h"
|
|
#include "api/scoped_refptr.h"
|
|
#include "rtc_base/third_party/sigslot/sigslot.h"
|
|
|
|
namespace webrtc {
|
|
|
|
// Helper class which will listen for changes to a stream and emit the
|
|
// corresponding signals.
|
|
class MediaStreamObserver : public ObserverInterface {
|
|
public:
|
|
explicit MediaStreamObserver(MediaStreamInterface* stream);
|
|
~MediaStreamObserver() override;
|
|
|
|
const MediaStreamInterface* stream() const { return stream_; }
|
|
|
|
void OnChanged() override;
|
|
|
|
sigslot::signal2<AudioTrackInterface*, MediaStreamInterface*>
|
|
SignalAudioTrackAdded;
|
|
sigslot::signal2<AudioTrackInterface*, MediaStreamInterface*>
|
|
SignalAudioTrackRemoved;
|
|
sigslot::signal2<VideoTrackInterface*, MediaStreamInterface*>
|
|
SignalVideoTrackAdded;
|
|
sigslot::signal2<VideoTrackInterface*, MediaStreamInterface*>
|
|
SignalVideoTrackRemoved;
|
|
|
|
private:
|
|
rtc::scoped_refptr<MediaStreamInterface> stream_;
|
|
AudioTrackVector cached_audio_tracks_;
|
|
VideoTrackVector cached_video_tracks_;
|
|
};
|
|
|
|
} // namespace webrtc
|
|
|
|
#endif // PC_MEDIA_STREAM_OBSERVER_H_
|