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Commit 2a8bb725 authored by Joseph Pirozzo's avatar Joseph Pirozzo
Browse files

A2DP sink audio focus 

Update AudioFocusRequest to receive notification on
AUDIOFOCUS_LOSS_TRANSIENT_CAN_DUCK.

Bug: 38389934
Test: stream music over Bluetooth and play Nav guidance, observe music
is ducked.

Change-Id: I1b4d33fd63cc6033c06bf24ac0f9a41aeeaf292d
Merged-In: Id0403116019e46191508ed9a4f6f627467db1726
(cherry picked from commit 7d06215f)
parent 0cff9baf

android/app/src/com/android/bluetooth/a2dpsink/A2dpSinkStreamHandler.java

+17 −2
Original line number Original line Diff line number Diff line
@@ -19,6 +19,7 @@ package com.android.bluetooth.a2dpsink; 
import android.bluetooth.BluetoothDevice;

import android.bluetooth.BluetoothDevice;

import android.content.Context;

import android.content.Context;

import android.media.AudioAttributes;

import android.media.AudioAttributes;

import android.media.AudioFocusRequest;

import android.media.AudioManager;

import android.media.AudioManager;

import android.media.AudioManager.OnAudioFocusChangeListener;

import android.media.AudioManager.OnAudioFocusChangeListener;

import android.os.Handler;

import android.os.Handler;
@@ -212,8 +213,22 @@ public class A2dpSinkStreamHandler extends Handler { 
     * Utility functions.

     * Utility functions.

     */

     */

    private int requestAudioFocus() {

    private int requestAudioFocus() {

        int focusRequestStatus = mAudioManager.requestAudioFocus(

        // Bluetooth A2DP may carry Music, Audio Books, Navigation, or other sounds so mark content

                mAudioFocusListener, AudioManager.STREAM_MUSIC, AudioManager.AUDIOFOCUS_GAIN);

        // type unknown.

        AudioAttributes streamAttributes =

                new AudioAttributes.Builder()

                        .setUsage(AudioAttributes.USAGE_MEDIA)

                        .setContentType(AudioAttributes.CONTENT_TYPE_UNKNOWN)

                        .build();

        // Bluetooth ducking is handled at the native layer so tell the Audio Manger to notify the

        // focus change listener via .setWillPauseWhenDucked().

        AudioFocusRequest focusRequest =

                new AudioFocusRequest.Builder(AudioManager.AUDIOFOCUS_GAIN)

                        .setAudioAttributes(streamAttributes)

                        .setWillPauseWhenDucked(true)

                        .setOnAudioFocusChangeListener(mAudioFocusListener, this)

                        .build();

        int focusRequestStatus = mAudioManager.requestAudioFocus(focusRequest);

        // If the request is granted begin streaming immediately and schedule an upgrade.

        // If the request is granted begin streaming immediately and schedule an upgrade.

        if (focusRequestStatus == AudioManager.AUDIOFOCUS_REQUEST_GRANTED) {

        if (focusRequestStatus == AudioManager.AUDIOFOCUS_REQUEST_GRANTED) {

            startAvrcpUpdates();

            startAvrcpUpdates();