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Commit c1419e82 authored by maxwen's avatar maxwen Committed by Thomas Wendt
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AudioService: Restore volumes after boot and when a headset is plugged 

The correct volume levels for <device>_speaker and <device>_headset are not
restored after booting and when a headset device is plugged in or out.

This fixes a glitch where the first volume change event causes the volume to
be reset to the last stored value instead of increasing/decreasting it by
one step.

Change-Id: I6a483af34fd6d9dd706c6979202bf0cf26d80854
parent ef44d827

media/java/android/media/AudioService.java

+27 −0
Original line number Diff line number Diff line
@@ -529,6 +529,7 @@ public class AudioService extends IAudioService.Stub implements OnFinished { 
        intentFilter.addAction(Intent.ACTION_USER_BACKGROUND);

        intentFilter.addAction(Intent.ACTION_USER_SWITCHED);

        intentFilter.addAction(Intent.ACTION_WIFI_DISPLAY_AUDIO);

        intentFilter.addAction(Intent.ACTION_HEADSET_PLUG);



        intentFilter.addAction(Intent.ACTION_CONFIGURATION_CHANGED);

        // Register a configuration change listener only if requested by system properties
@@ -3941,6 +3942,16 @@ public class AudioService extends IAudioService.Stub implements OnFinished { 
                        }

                    }

                }

            } else if (action.equals(Intent.ACTION_HEADSET_PLUG)) {

                state = intent.getIntExtra("state", 0);

                if (state == 1) {

                    // Headset plugged in

                    adjustCurrentStreamVolume();

                    // TODO: Cap volume at safe levels

                } else {

                    // Headset disconnected

                    adjustCurrentStreamVolume();

                }

            } else if (action.equals(Intent.ACTION_USB_AUDIO_ACCESSORY_PLUG) ||

                           action.equals(Intent.ACTION_USB_AUDIO_DEVICE_PLUG)) {

                state = intent.getIntExtra("state", 0);
@@ -4031,6 +4042,8 @@ public class AudioService extends IAudioService.Stub implements OnFinished { 
                        0,

                        null,

                        SAFE_VOLUME_CONFIGURE_TIMEOUT_MS);



                adjustCurrentStreamVolume();

            } else if (action.equals(Intent.ACTION_PACKAGE_REMOVED)) {

                if (!intent.getBooleanExtra(Intent.EXTRA_REPLACING, false)) {

                    // a package is being removed, not replaced
@@ -4084,6 +4097,20 @@ public class AudioService extends IAudioService.Stub implements OnFinished { 
                }

            }

        }



        private void adjustCurrentStreamVolume() {

            VolumeStreamState streamState;

            int device;



            for (int stream = 0; stream < AudioSystem.getNumStreamTypes(); stream++) {

                if (stream == mStreamVolumeAlias[stream]) {

                    streamState = mStreamStates[mStreamVolumeAlias[stream]];

                    device = getDeviceForStream(stream);

                    // apply stored value for device

                    streamState.applyDeviceVolume(device);

                }

            }

        }

    }



    private void masterVolumeChanged(final int flags) {