AudioPolicyManager: notification of dynamic policy mix activity

Implement non-stream type specific ref counting in output
  descriptors to keep track of mix activity.
Notify audio policy client of mix activity changes.

Bug 20226914

Change-Id: Iec939cb640c58056f88947b611d23b4bb6d8a11b

1 files changed, 1 insertions, 0 deletions

diff --git a/include/media/AudioSystem.h b/include/media/AudioSystem.h
index 3b6db8c..927283c 100644
--- a/include/media/AudioSystem.h
+++ b/include/media/AudioSystem.h
@@ -384,6 +384,7 @@ private:
         // IAudioPolicyServiceClient
         virtual void onAudioPortListUpdate();
         virtual void onAudioPatchListUpdate();
+        virtual void onDynamicPolicyMixStateUpdate(String8 regId, int32_t state);
 
     private:
         Mutex                               mLock;