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      1 /*
      2  * libjingle
      3  * Copyright 2012, 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_LOCALAUDIOSOURCE_H_
     29 #define TALK_APP_WEBRTC_LOCALAUDIOSOURCE_H_
     30 
     31 #include "talk/app/webrtc/mediastreaminterface.h"
     32 #include "talk/app/webrtc/notifier.h"
     33 #include "talk/app/webrtc/peerconnectioninterface.h"
     34 #include "talk/base/scoped_ptr.h"
     35 #include "talk/media/base/mediachannel.h"
     36 
     37 // LocalAudioSource implements AudioSourceInterface.
     38 // This contains settings for switching audio processing on and off.
     39 
     40 namespace webrtc {
     41 
     42 class MediaConstraintsInterface;
     43 
     44 class LocalAudioSource : public Notifier<AudioSourceInterface> {
     45  public:
     46   // Creates an instance of LocalAudioSource.
     47   static talk_base::scoped_refptr<LocalAudioSource> Create(
     48       const PeerConnectionFactoryInterface::Options& options,
     49       const MediaConstraintsInterface* constraints);
     50 
     51   virtual SourceState state() const { return source_state_; }
     52   virtual const cricket::AudioOptions& options() const { return options_; }
     53 
     54  protected:
     55   LocalAudioSource()
     56       : source_state_(kInitializing) {
     57   }
     58 
     59   ~LocalAudioSource() {
     60   }
     61 
     62  private:
     63   void Initialize(const PeerConnectionFactoryInterface::Options& options,
     64                   const MediaConstraintsInterface* constraints);
     65 
     66   cricket::AudioOptions options_;
     67   SourceState source_state_;
     68 };
     69 
     70 }  // namespace webrtc
     71 
     72 #endif  // TALK_APP_WEBRTC_LOCALAUDIOSOURCE_H_
     73