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Commit 084877b1 authored by Mingming Yin's avatar Mingming Yin Committed by Steve Kondik
Browse files

audio: Manage audio focus for QCHAT 

- Cherry-picked from the commit with commit ID:
c14c6156e879ec1c3f83f6a2cc31dac1d22147a2
- FR-fixed: 8965

Change-Id: I51c554b82c6177b7d3e845bdc8970825b5d1198a
parent 737ff0b2

media/java/android/media/AudioService.java

+22 −0
Original line number Diff line number Diff line
@@ -4690,6 +4690,25 @@ public class AudioService extends IAudioService.Stub implements OnFinished { 
        return true;

    }



    /* Constant to identify focus stack entry that is used to hold the audio focus for QCHAT client

     */

    private static final String CLIENT_ID_QCHAT = "QCHAT";



    /**

     * Helper function:

     * Returns true if the system is in a state where the focus can be reevaluated, false otherwise.

     */

    private boolean canReassignAudioFocusFromQchat(int streamType, String clientId) {

        // Focus request is rejected for Music Player and for QChat client if the focus is already

        // acquired by a QChat client

        if (!mFocusStack.isEmpty() &&

            mFocusStack.peek().mClientId.contains(CLIENT_ID_QCHAT) &&

            (clientId.contains(CLIENT_ID_QCHAT) || (streamType == AudioManager.STREAM_MUSIC))) {

            return false;

        }

        return true;

    }



    /**

     * Inner class to monitor audio focus client deaths, and remove them from the audio focus

     * stack if necessary.
@@ -4731,6 +4750,9 @@ public class AudioService extends IAudioService.Stub implements OnFinished { 
            if (!canReassignAudioFocusTo(clientId)) {

                return AudioManager.AUDIOFOCUS_REQUEST_FAILED;

            }

            if (!canReassignAudioFocusFromQchat(mainStreamType, clientId)) {

                return AudioManager.AUDIOFOCUS_REQUEST_FAILED;

            }



            // handle the potential premature death of the new holder of the focus

            // (premature death == death before abandoning focus)