1 /* 2 * libjingle 3 * Copyright 2014, 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 #ifndef TALK_APP_WEBRTC_REMOTEAUDIOSOURCE_H_ 29 #define TALK_APP_WEBRTC_REMOTEAUDIOSOURCE_H_ 30 31 #include <list> 32 33 #include "talk/app/webrtc/mediastreaminterface.h" 34 #include "talk/app/webrtc/notifier.h" 35 36 namespace webrtc { 37 38 using webrtc::AudioSourceInterface; 39 40 // This class implements the audio source used by the remote audio track. 41 class RemoteAudioSource : public Notifier<AudioSourceInterface> { 42 public: 43 // Creates an instance of RemoteAudioSource. 44 static rtc::scoped_refptr<RemoteAudioSource> Create(); 45 46 protected: 47 RemoteAudioSource(); 48 virtual ~RemoteAudioSource(); 49 50 private: 51 typedef std::list<AudioObserver*> AudioObserverList; 52 53 // MediaSourceInterface implementation. 54 virtual MediaSourceInterface::SourceState state() const OVERRIDE; 55 56 // AudioSourceInterface implementation. 57 virtual void SetVolume(double volume) OVERRIDE; 58 virtual void RegisterAudioObserver(AudioObserver* observer) OVERRIDE; 59 virtual void UnregisterAudioObserver(AudioObserver* observer) OVERRIDE; 60 61 AudioObserverList audio_observers_; 62 }; 63 64 } // namespace webrtc 65 66 #endif // TALK_APP_WEBRTC_REMOTEAUDIOSOURCE_H_ 67