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Commit 030c3156 authored by Roman Birg's avatar Roman Birg
Browse files

Bluetooth: request audio focus on incoming call 



When the a2dp stream is suspended for an incoming call, request audio
focus from the audio manager so that any playing media will pause/duck
as needed.

Change-Id: I308b697ad998b7167703ebc89c6285034ac1ebf9
Signed-off-by: default avatarRoman Birg <roman@cyngn.com>
parent 24d06367

src/com/android/bluetooth/hfp/HeadsetStateMachine.java

+21 −0
Original line number Diff line number Diff line
@@ -202,6 +202,7 @@ final class HeadsetStateMachine extends StateMachine { 
    private IBluetoothHeadsetPhone mPhoneProxy;

    private boolean mNativeAvailable;



    private boolean mAudioFocused;

    private boolean mA2dpSuspend;

    private int mA2dpPlayState;

    private int mA2dpState;
@@ -1736,6 +1737,7 @@ final class HeadsetStateMachine extends StateMachine { 
                                log("Audio is closed,Set A2dpSuspended=false");

                                mAudioManager.setParameters("A2dpSuspended=false");

                                mA2dpSuspend = false;

                                releaseAudioFocus();

                            }

                        }

                        broadcastAudioState(device, BluetoothHeadset.STATE_AUDIO_DISCONNECTED,
@@ -2249,6 +2251,7 @@ final class HeadsetStateMachine extends StateMachine { 
                                log("Audio is closed,Set A2dpSuspended=false");

                                mAudioManager.setParameters("A2dpSuspended=false");

                                mA2dpSuspend = false;

                                releaseAudioFocus();

                            }

                        }

                        broadcastAudioState(device, BluetoothHeadset.STATE_AUDIO_DISCONNECTED,
@@ -2816,6 +2819,7 @@ final class HeadsetStateMachine extends StateMachine { 
            if (mA2dpPlayState == BluetoothA2dp.STATE_PLAYING) {

                log("suspending A2DP stream for SCO");

                mPendingCiev = true;

                requestAudioFocus();

                return true;

            }

        }
@@ -2920,6 +2924,21 @@ final class HeadsetStateMachine extends StateMachine { 
        }

    }



    private void requestAudioFocus() {

        if (!mAudioFocused) {

            mAudioManager.requestAudioFocusForCall(AudioManager.STREAM_BLUETOOTH_SCO,

                    AudioManager.AUDIOFOCUS_GAIN_TRANSIENT);

            mAudioFocused = true;

        }

    }



    private void releaseAudioFocus() {

        if (mAudioFocused) {

            mAudioManager.abandonAudioFocusForCall();

            mAudioFocused = false;

        }

    }



    private void processAnswerCall(BluetoothDevice device) {

         if(device == null) {

            Log.w(TAG, "processAnswerCall device is null");
@@ -3123,6 +3142,7 @@ final class HeadsetStateMachine extends StateMachine { 
            if (mA2dpPlayState == BluetoothA2dp.STATE_PLAYING) {

                Log.d(TAG, "suspending A2DP stream for Call");

                mPendingCiev = true;

                requestAudioFocus();

                return ;

            }

        }
@@ -3136,6 +3156,7 @@ final class HeadsetStateMachine extends StateMachine { 
                log("Set A2dpSuspended=false to reset the a2dp state to standby");

                mAudioManager.setParameters("A2dpSuspended=false");

                mA2dpSuspend = false;

                releaseAudioFocus();

            }

        }

    }