Add stream/volume apis to sessions

This adds RemoteVolumeProviders which handle volume change
events and a way to switch a session between local stream
playback and remote playback handling.

This also adds a way for an app to specify the PendingIntent
to launch when we want to show their ongoing playback UI.

Change-Id: I3a72bf2ec7ca55f61f50859ddc2988eebd491e9d

1 files changed, 15 insertions, 0 deletions

diff --git a/api/current.txt b/api/current.txt
index b2fe641..646c495 100644
--- a/api/current.txt
+++ b/api/current.txt
@@ -15746,6 +15746,9 @@ package android.media.session {
     method public void sendEvent(java.lang.String, android.os.Bundle);
     method public void setActive(boolean);
     method public void setFlags(int);
+    method public void setLaunchPendingIntent(android.app.PendingIntent);
+    method public void useLocalPlayback(android.media.AudioAttributes);
+    method public void useRemotePlayback(android.media.session.RemoteVolumeProvider);
     field public static final int FLAG_HANDLES_MEDIA_BUTTONS = 1; // 0x1
     field public static final int FLAG_HANDLES_TRANSPORT_CONTROLS = 2; // 0x2
   }
@@ -15814,6 +15817,18 @@ package android.media.session {
     field public static final int PLAYSTATE_STOPPED = 1; // 0x1
   }
 
+  public abstract class RemoteVolumeProvider {
+    ctor public RemoteVolumeProvider(int, int);
+    method public abstract int getCurrentVolume();
+    method public final int getFlags();
+    method public final int getMaxVolume();
+    method public final void notifyVolumeChanged();
+    method public void onAdjustVolume(int);
+    method public void onSetVolume(int);
+    field public static final int FLAG_VOLUME_ABSOLUTE = 2; // 0x2
+    field public static final int FLAG_VOLUME_RELATIVE = 1; // 0x1
+  }
+
   public final class TransportController {
     method public void addStateListener(android.media.session.TransportController.TransportStateListener);
     method public void addStateListener(android.media.session.TransportController.TransportStateListener, android.os.Handler);