1 /* 2 * libjingle 3 * Copyright 2011 Google Inc. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright notice, 9 * this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright notice, 11 * this list of conditions and the following disclaimer in the documentation 12 * and/or other materials provided with the distribution. 13 * 3. The name of the author may not be used to endorse or promote products 14 * derived from this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 #include "talk/app/webrtc/mediastream.h" 29 #include "webrtc/base/logging.h" 30 31 namespace webrtc { 32 33 template <class V> 34 static typename V::iterator FindTrack(V* vector, 35 const std::string& track_id) { 36 typename V::iterator it = vector->begin(); 37 for (; it != vector->end(); ++it) { 38 if ((*it)->id() == track_id) { 39 break; 40 } 41 } 42 return it; 43 }; 44 45 rtc::scoped_refptr<MediaStream> MediaStream::Create( 46 const std::string& label) { 47 rtc::RefCountedObject<MediaStream>* stream = 48 new rtc::RefCountedObject<MediaStream>(label); 49 return stream; 50 } 51 52 MediaStream::MediaStream(const std::string& label) 53 : label_(label) { 54 } 55 56 bool MediaStream::AddTrack(AudioTrackInterface* track) { 57 return AddTrack<AudioTrackVector, AudioTrackInterface>(&audio_tracks_, track); 58 } 59 60 bool MediaStream::AddTrack(VideoTrackInterface* track) { 61 return AddTrack<VideoTrackVector, VideoTrackInterface>(&video_tracks_, track); 62 } 63 64 bool MediaStream::RemoveTrack(AudioTrackInterface* track) { 65 return RemoveTrack<AudioTrackVector>(&audio_tracks_, track); 66 } 67 68 bool MediaStream::RemoveTrack(VideoTrackInterface* track) { 69 return RemoveTrack<VideoTrackVector>(&video_tracks_, track); 70 } 71 72 rtc::scoped_refptr<AudioTrackInterface> 73 MediaStream::FindAudioTrack(const std::string& track_id) { 74 AudioTrackVector::iterator it = FindTrack(&audio_tracks_, track_id); 75 if (it == audio_tracks_.end()) 76 return NULL; 77 return *it; 78 } 79 80 rtc::scoped_refptr<VideoTrackInterface> 81 MediaStream::FindVideoTrack(const std::string& track_id) { 82 VideoTrackVector::iterator it = FindTrack(&video_tracks_, track_id); 83 if (it == video_tracks_.end()) 84 return NULL; 85 return *it; 86 } 87 88 template <typename TrackVector, typename Track> 89 bool MediaStream::AddTrack(TrackVector* tracks, Track* track) { 90 typename TrackVector::iterator it = FindTrack(tracks, track->id()); 91 if (it != tracks->end()) 92 return false; 93 tracks->push_back(track); 94 FireOnChanged(); 95 return true; 96 } 97 98 template <typename TrackVector> 99 bool MediaStream::RemoveTrack(TrackVector* tracks, 100 MediaStreamTrackInterface* track) { 101 ASSERT(tracks != NULL); 102 if (!track) 103 return false; 104 typename TrackVector::iterator it = FindTrack(tracks, track->id()); 105 if (it == tracks->end()) 106 return false; 107 tracks->erase(it); 108 FireOnChanged(); 109 return true; 110 } 111 112 } // namespace webrtc 113