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/*
* 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.
*/
#include "pc/media_stream.h"
#include <stddef.h>
#include <utility>
#include "rtc_base/checks.h"
namespace webrtc {
template <class V>
static typename V::iterator FindTrack(V* vector, const std::string& track_id) {
typename V::iterator it = vector->begin();
for (; it != vector->end(); ++it) {
if ((*it)->id() == track_id) {
break;
}
}
return it;
}
rtc::scoped_refptr<MediaStream> MediaStream::Create(const std::string& id) {
return rtc::make_ref_counted<MediaStream>(id);
}
MediaStream::MediaStream(const std::string& id) : id_(id) {}
bool MediaStream::AddTrack(rtc::scoped_refptr<AudioTrackInterface> track) {
return AddTrack<AudioTrackVector, AudioTrackInterface>(&audio_tracks_, track);
}
bool MediaStream::AddTrack(rtc::scoped_refptr<VideoTrackInterface> track) {
return AddTrack<VideoTrackVector, VideoTrackInterface>(&video_tracks_, track);
}
bool MediaStream::RemoveTrack(rtc::scoped_refptr<AudioTrackInterface> track) {
return RemoveTrack<AudioTrackVector>(&audio_tracks_, track);
}
bool MediaStream::RemoveTrack(rtc::scoped_refptr<VideoTrackInterface> track) {
return RemoveTrack<VideoTrackVector>(&video_tracks_, track);
}
rtc::scoped_refptr<AudioTrackInterface> MediaStream::FindAudioTrack(
const std::string& track_id) {
AudioTrackVector::iterator it = FindTrack(&audio_tracks_, track_id);
if (it == audio_tracks_.end())
return nullptr;
return *it;
}
rtc::scoped_refptr<VideoTrackInterface> MediaStream::FindVideoTrack(
const std::string& track_id) {
VideoTrackVector::iterator it = FindTrack(&video_tracks_, track_id);
if (it == video_tracks_.end())
return nullptr;
return *it;
}
template <typename TrackVector, typename Track>
bool MediaStream::AddTrack(TrackVector* tracks,
rtc::scoped_refptr<Track> track) {
typename TrackVector::iterator it = FindTrack(tracks, track->id());
if (it != tracks->end())
return false;
tracks->emplace_back(std::move((track)));
FireOnChanged();
return true;
}
template <typename TrackVector>
bool MediaStream::RemoveTrack(
TrackVector* tracks,
rtc::scoped_refptr<MediaStreamTrackInterface> track) {
RTC_DCHECK(tracks != NULL);
if (!track)
return false;
typename TrackVector::iterator it = FindTrack(tracks, track->id());
if (it == tracks->end())
return false;
tracks->erase(it);
FireOnChanged();
return true;
}
} // namespace webrtc
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