/*
 *  Copyright 2011 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 implementation of MediaStreamInterface interface.

#ifndef WEBRTC_API_MEDIASTREAM_H_
#define WEBRTC_API_MEDIASTREAM_H_

#include <string>
#include <vector>

#include "webrtc/api/mediastreaminterface.h"
#include "webrtc/api/notifier.h"

namespace webrtc {

class MediaStream : public Notifier<MediaStreamInterface> {
 public:
  static rtc::scoped_refptr<MediaStream> Create(const std::string& label);

  std::string label() const override { return label_; }

  bool AddTrack(AudioTrackInterface* track) override;
  bool AddTrack(VideoTrackInterface* track) override;
  bool RemoveTrack(AudioTrackInterface* track) override;
  bool RemoveTrack(VideoTrackInterface* track) override;
  virtual rtc::scoped_refptr<AudioTrackInterface>
      FindAudioTrack(const std::string& track_id);
  virtual rtc::scoped_refptr<VideoTrackInterface>
      FindVideoTrack(const std::string& track_id);

  AudioTrackVector GetAudioTracks() override { return audio_tracks_; }
  VideoTrackVector GetVideoTracks() override { return video_tracks_; }

 protected:
  explicit MediaStream(const std::string& label);

 private:
  template <typename TrackVector, typename Track>
  bool AddTrack(TrackVector* Tracks, Track* track);
  template <typename TrackVector>
  bool RemoveTrack(TrackVector* Tracks, MediaStreamTrackInterface* track);

  std::string label_;
  AudioTrackVector audio_tracks_;
  VideoTrackVector video_tracks_;
};

}  // namespace webrtc

#endif  // WEBRTC_API_MEDIASTREAM_H_