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