[Chromecast] Add new volume control API to CastMediaShlib

chromecast/public/avsettings.h

Index: chromecast/public/avsettings.h
diff --git a/chromecast/public/avsettings.h b/chromecast/public/avsettings.h
index 0b99842bfc3c48fa2d961643503d08593f978985..1cff09858f37e670239f4113e2b963cc927470ad 100644
--- a/chromecast/public/avsettings.h
+++ b/chromecast/public/avsettings.h
@@ -73,6 +73,7 @@ class AvSettings {
     // Initialize() was called.
     ACTIVE_STATE_CHANGED = 0,
 
+    // DEPRECATED - Prefer to implement volume control in CastMediaShlib.
     // This event shall be fired whenever the system volume level or muted state
     // are changed including when user changed volume via a remote controller,
     // or after a call to SetAudioVolume() or SetAudioMuted().
@@ -203,19 +204,23 @@ class AvSettings {
   //  - UNKNOWN_VOLUME: 0.01 (1%)
   virtual bool GetAudioVolumeStepInterval(float* step_inteval) = 0;
 
+  // DEPRECATED - Prefer to implement volume control in CastMediaShlib.

[halliwell, 2017/02/24 14:23:24]

Has this been fully thought through for TV case?  Default use case for
integrated TV would be to modify volume during media playback, and you want the
actual TV volume to change (volume bar UI will appear on TV).

Will we support TTS on TV?  Suppose we do.  Is it ducking media volume and
increasing TTS volume?  Presumably we don't want TV volume UI to pop up at this
point?

   // Returns the current volume level, which must be from 0.0 (inclusive) to
   // 1.0 (inclusive).
   virtual float GetAudioVolume() = 0;
 
+  // DEPRECATED - Prefer to implement volume control in CastMediaShlib.
   // Sets new volume level of the device (or HDMI sinks). |level| is from 0.0
   // (inclusive) to 1.0 (inclusive).
   // If successful and the level has changed, it must return true and fire
   // AUDIO_VOLUME_CHANGED.
   virtual bool SetAudioVolume(float level) = 0;
 
+  // DEPRECATED - Prefer to implement volume control in CastMediaShlib.
   // Whether or not the device (or HDMI sinks) is muted.
   virtual bool IsAudioMuted() = 0;
 
+  // DEPRECATED - Prefer to implement volume control in CastMediaShlib.
   // Sets the device (or HDMI sinks) muted.
   // If successful and the muted state has changed, it must return true and fire
   // AUDIO_VOLUME_CHANGED.