Add MODIFY_AUDIO_SETTINGS permission in Android manifest and implementation in audio manager.

media/audio/android/audio_manager_android.h

Index: media/audio/android/audio_manager_android.h
===================================================================
--- media/audio/android/audio_manager_android.h	(revision 187192)
+++ media/audio/android/audio_manager_android.h	(working copy)
@@ -5,6 +5,7 @@
 #ifndef MEDIA_AUDIO_ANDROID_AUDIO_MANAGER_ANDROID_H_
 #define MEDIA_AUDIO_ANDROID_AUDIO_MANAGER_ANDROID_H_
 
+#include "base/android/jni_android.h"
 #include "media/audio/audio_manager_base.h"
 
 namespace media {
@@ -12,6 +13,11 @@
 // Android implemention of AudioManager.
 class MEDIA_EXPORT AudioManagerAndroid : public AudioManagerBase {
  public:
+  static const int kAudioModeNormal = 0x00000000;
+  static const int kAudioModeRingtone = 0x00000001;
+  static const int kAudioModeInCall = 0x00000002;
+  static const int kAudioModeInCommunication = 0x00000003;
+
   AudioManagerAndroid();
 
   // Implementation of AudioManager.
@@ -31,12 +37,14 @@
       const AudioParameters& params, const std::string& device_id) OVERRIDE;
   virtual AudioInputStream* MakeLowLatencyInputStream(
       const AudioParameters& params, const std::string& device_id) OVERRIDE;
+  static bool RegisterAudioManager(JNIEnv* env);

[tommi (sloooow) - chröme, 2013/03/11 09:57:18]

Add whitespace to separate this method from the virtual methods.
Does this need to be public?

[leozwang1, 2013/03/11 15:12:24]

Done.
Yes, it must be public which is called by media_jni_register().

 
  protected:
   virtual ~AudioManagerAndroid();
 
   virtual AudioParameters GetPreferredOutputStreamParameters(

[tommi (sloooow) - chröme, 2013/03/11 09:57:18]

why is this method here and not with the other methods from the same interface?

[leozwang1, 2013/03/11 15:12:24]

Tommi, can you please explain more? where shall I move
GetPreferredOutputStreamParameters() to?

[no longer working on chromium, 2013/03/11 16:07:54]

You meant GetPreferredOutputStreamParameters and GetInputStreamParameters?

GetInputStreamParameters is a public interface in audio_manager.h, and
GetPreferredOutputStreamParameters is protected interface in
audio_manager_base.h.
The intefaces for input and output are a bit different when it comes to user
cases, because we have resampler only in output side but not input side.

       const AudioParameters& input_params) OVERRIDE;
+  void SetAudioMode(int mode);
 
  private:
   DISALLOW_COPY_AND_ASSIGN(AudioManagerAndroid);