Add speaker on/off control on Android for WebRTC

media/audio/audio_manager_base.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef MEDIA_AUDIO_AUDIO_MANAGER_BASE_H_
 #define MEDIA_AUDIO_AUDIO_MANAGER_BASE_H_
 
 #include <map>
 #include <string>
 #include <utility>
@@ skipping 118 matching lines @@
   // will decide if they should return the values from |input_params| or the
   // default hardware values. If the |input_params| is invalid, it will return
   // the default hardware audio parameters.
   virtual AudioParameters GetPreferredOutputStreamParameters(
       const AudioParameters& input_params) = 0;
 
   // Map of cached AudioOutputDispatcher instances.  Must only be touched
   // from the audio thread (no locking).
   AudioOutputDispatchersMap output_dispatchers_;
 
+#if defined(OS_ANDROID)
+  // Java AudioManagerAndroid instance.
+  base::android::ScopedJavaGlobalRef<jobject> j_am_;

[tommi (sloooow) - chröme, 2013/03/21 15:31:27]

full_descriptive_variable_names_please_ :)

[Yaron, 2013/03/21 16:51:31]

Make this private. Also this object (AudioManagerBase) will get destroyed at
some point? Want to make sure we don't keep the java object from get gc'd

[leozwang1, 2013/03/21 18:51:35]

Done.

[leozwang1, 2013/03/21 18:51:35]

scoped_ptr<media::AudioManager> audio_manager_ is defined in broswer_main_loop.h

+#endif
+
  private:
   // Called by Shutdown().
   void ShutdownOnAudioThread();
 
+#if defined(OS_ANDROID)
   void SetAudioMode(int mode);
+  void RegisterHeadsetReceiver();
+  void UnRegisterHeadsetReceiver();

[tommi (sloooow) - chröme, 2013/03/21 15:31:27]

Unregister is one word I believe

[leozwang1, 2013/03/21 18:51:35]

Done.

+#endif
 
   // Counts the number of active input streams to find out if something else
   // is currently recording in Chrome.
   base::AtomicRefCount num_active_input_streams_;
 
   // Max number of open output streams, modified by
   // SetMaxOutputStreamsAllowed().
   int max_num_output_streams_;
 
   // Max number of open input streams.
@@ skipping 16 matching lines @@
   // tasks which run on the audio thread even after Shutdown() has been started
   // and GetMessageLoop() starts returning NULL.
   scoped_refptr<base::MessageLoopProxy> message_loop_;
 
   DISALLOW_COPY_AND_ASSIGN(AudioManagerBase);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_AUDIO_AUDIO_MANAGER_BASE_H_