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/*
* Copyright (C) 2007 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package android.media;
import android.Manifest;
import android.annotation.NonNull;
import android.annotation.SdkConstant;
import android.annotation.SdkConstant.SdkConstantType;
import android.annotation.SystemApi;
import android.app.PendingIntent;
import android.bluetooth.BluetoothDevice;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.media.audiopolicy.AudioPolicy;
import android.media.session.MediaController;
import android.media.session.MediaSession;
import android.media.session.MediaSessionLegacyHelper;
import android.media.session.MediaSessionManager;
import android.os.Binder;
import android.os.Handler;
import android.os.IBinder;
import android.os.Looper;
import android.os.Message;
import android.os.Process;
import android.os.RemoteException;
import android.os.SystemClock;
import android.os.ServiceManager;
import android.os.UserHandle;
import android.provider.Settings;
import android.util.ArrayMap;
import android.util.Log;
import android.util.Pair;
import android.view.KeyEvent;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.Iterator;
/**
* AudioManager provides access to volume and ringer mode control.
*
* Use Context.getSystemService(Context.AUDIO_SERVICE) to get
* an instance of this class.
*/
public class AudioManager {
private Context mOriginalContext;
private Context mApplicationContext;
private long mVolumeKeyUpTime;
private final boolean mUseVolumeKeySounds;
private final boolean mUseFixedVolume;
private static String TAG = "AudioManager";
private static final AudioPortEventHandler sAudioPortEventHandler = new AudioPortEventHandler();
/**
* Broadcast intent, a hint for applications that audio is about to become
* 'noisy' due to a change in audio outputs. For example, this intent may
* be sent when a wired headset is unplugged, or when an A2DP audio
* sink is disconnected, and the audio system is about to automatically
* switch audio route to the speaker. Applications that are controlling
* audio streams may consider pausing, reducing volume or some other action
* on receipt of this intent so as not to surprise the user with audio
* from the speaker.
*/
@SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
public static final String ACTION_AUDIO_BECOMING_NOISY = "android.media.AUDIO_BECOMING_NOISY";
/**
* Sticky broadcast intent action indicating that the ringer mode has
* changed. Includes the new ringer mode.
*
* @see #EXTRA_RINGER_MODE
*/
@SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
public static final String RINGER_MODE_CHANGED_ACTION = "android.media.RINGER_MODE_CHANGED";
/**
* @hide
* Sticky broadcast intent action indicating that the internal ringer mode has
* changed. Includes the new ringer mode.
*
* @see #EXTRA_RINGER_MODE
*/
@SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
public static final String INTERNAL_RINGER_MODE_CHANGED_ACTION =
"android.media.INTERNAL_RINGER_MODE_CHANGED_ACTION";
/**
* The new ringer mode.
*
* @see #RINGER_MODE_CHANGED_ACTION
* @see #RINGER_MODE_NORMAL
* @see #RINGER_MODE_SILENT
* @see #RINGER_MODE_VIBRATE
*/
public static final String EXTRA_RINGER_MODE = "android.media.EXTRA_RINGER_MODE";
/**
* Broadcast intent action indicating that the vibrate setting has
* changed. Includes the vibrate type and its new setting.
*
* @see #EXTRA_VIBRATE_TYPE
* @see #EXTRA_VIBRATE_SETTING
* @deprecated Applications should maintain their own vibrate policy based on
* current ringer mode and listen to {@link #RINGER_MODE_CHANGED_ACTION} instead.
*/
@SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
public static final String VIBRATE_SETTING_CHANGED_ACTION =
"android.media.VIBRATE_SETTING_CHANGED";
/**
* @hide Broadcast intent when the volume for a particular stream type changes.
* Includes the stream, the new volume and previous volumes.
* Notes:
* - for internal platform use only, do not make public,
* - never used for "remote" volume changes
*
* @see #EXTRA_VOLUME_STREAM_TYPE
* @see #EXTRA_VOLUME_STREAM_VALUE
* @see #EXTRA_PREV_VOLUME_STREAM_VALUE
*/
@SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
public static final String VOLUME_CHANGED_ACTION = "android.media.VOLUME_CHANGED_ACTION";
/**
* @hide Broadcast intent when the devices for a particular stream type changes.
* Includes the stream, the new devices and previous devices.
* Notes:
* - for internal platform use only, do not make public,
* - never used for "remote" volume changes
*
* @see #EXTRA_VOLUME_STREAM_TYPE
* @see #EXTRA_VOLUME_STREAM_DEVICES
* @see #EXTRA_PREV_VOLUME_STREAM_DEVICES
* @see #getDevicesForStream
*/
@SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
public static final String STREAM_DEVICES_CHANGED_ACTION =
"android.media.STREAM_DEVICES_CHANGED_ACTION";
/**
* @hide Broadcast intent when a stream mute state changes.
* Includes the stream that changed and the new mute state
*
* @see #EXTRA_VOLUME_STREAM_TYPE
* @see #EXTRA_STREAM_VOLUME_MUTED
*/
@SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
public static final String STREAM_MUTE_CHANGED_ACTION =
"android.media.STREAM_MUTE_CHANGED_ACTION";
/**
* @hide Broadcast intent when the master mute state changes.
* Includes the the new volume
*
* @see #EXTRA_MASTER_VOLUME_MUTED
*/
@SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
public static final String MASTER_MUTE_CHANGED_ACTION =
"android.media.MASTER_MUTE_CHANGED_ACTION";
/**
* The new vibrate setting for a particular type.
*
* @see #VIBRATE_SETTING_CHANGED_ACTION
* @see #EXTRA_VIBRATE_TYPE
* @see #VIBRATE_SETTING_ON
* @see #VIBRATE_SETTING_OFF
* @see #VIBRATE_SETTING_ONLY_SILENT
* @deprecated Applications should maintain their own vibrate policy based on
* current ringer mode and listen to {@link #RINGER_MODE_CHANGED_ACTION} instead.
*/
public static final String EXTRA_VIBRATE_SETTING = "android.media.EXTRA_VIBRATE_SETTING";
/**
* The vibrate type whose setting has changed.
*
* @see #VIBRATE_SETTING_CHANGED_ACTION
* @see #VIBRATE_TYPE_NOTIFICATION
* @see #VIBRATE_TYPE_RINGER
* @deprecated Applications should maintain their own vibrate policy based on
* current ringer mode and listen to {@link #RINGER_MODE_CHANGED_ACTION} instead.
*/
public static final String EXTRA_VIBRATE_TYPE = "android.media.EXTRA_VIBRATE_TYPE";
/**
* @hide The stream type for the volume changed intent.
*/
public static final String EXTRA_VOLUME_STREAM_TYPE = "android.media.EXTRA_VOLUME_STREAM_TYPE";
/**
* @hide
* The stream type alias for the volume changed intent.
* For instance the intent may indicate a change of the {@link #STREAM_NOTIFICATION} stream
* type (as indicated by the {@link #EXTRA_VOLUME_STREAM_TYPE} extra), but this is also
* reflected by a change of the volume of its alias, {@link #STREAM_RING} on some devices,
* {@link #STREAM_MUSIC} on others (e.g. a television).
*/
public static final String EXTRA_VOLUME_STREAM_TYPE_ALIAS =
"android.media.EXTRA_VOLUME_STREAM_TYPE_ALIAS";
/**
* @hide The volume associated with the stream for the volume changed intent.
*/
public static final String EXTRA_VOLUME_STREAM_VALUE =
"android.media.EXTRA_VOLUME_STREAM_VALUE";
/**
* @hide The previous volume associated with the stream for the volume changed intent.
*/
public static final String EXTRA_PREV_VOLUME_STREAM_VALUE =
"android.media.EXTRA_PREV_VOLUME_STREAM_VALUE";
/**
* @hide The devices associated with the stream for the stream devices changed intent.
*/
public static final String EXTRA_VOLUME_STREAM_DEVICES =
"android.media.EXTRA_VOLUME_STREAM_DEVICES";
/**
* @hide The previous devices associated with the stream for the stream devices changed intent.
*/
public static final String EXTRA_PREV_VOLUME_STREAM_DEVICES =
"android.media.EXTRA_PREV_VOLUME_STREAM_DEVICES";
/**
* @hide The new master volume mute state for the master mute changed intent.
* Value is boolean
*/
public static final String EXTRA_MASTER_VOLUME_MUTED =
"android.media.EXTRA_MASTER_VOLUME_MUTED";
/**
* @hide The new stream volume mute state for the stream mute changed intent.
* Value is boolean
*/
public static final String EXTRA_STREAM_VOLUME_MUTED =
"android.media.EXTRA_STREAM_VOLUME_MUTED";
/**
* Broadcast Action: Wired Headset plugged in or unplugged.
*
* You cannot receive this through components declared
* in manifests, only by explicitly registering for it with
* {@link Context#registerReceiver(BroadcastReceiver, IntentFilter)
* Context.registerReceiver()}.
*
*
The intent will have the following extra values:
*
* - state - 0 for unplugged, 1 for plugged.
* - name - Headset type, human readable string
* - microphone - 1 if headset has a microphone, 0 otherwise
*
*
*/
@SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
public static final String ACTION_HEADSET_PLUG =
"android.intent.action.HEADSET_PLUG";
/**
* Broadcast Action: A sticky broadcast indicating an HDMI cable was plugged or unplugged.
*
* The intent will have the following extra values: {@link #EXTRA_AUDIO_PLUG_STATE},
* {@link #EXTRA_MAX_CHANNEL_COUNT}, {@link #EXTRA_ENCODINGS}.
* It can only be received by explicitly registering for it with
* {@link Context#registerReceiver(BroadcastReceiver, IntentFilter)}.
*/
@SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
public static final String ACTION_HDMI_AUDIO_PLUG =
"android.media.action.HDMI_AUDIO_PLUG";
/**
* Extra used in {@link #ACTION_HDMI_AUDIO_PLUG} to communicate whether HDMI is plugged in
* or unplugged.
* An integer value of 1 indicates a plugged-in state, 0 is unplugged.
*/
public static final String EXTRA_AUDIO_PLUG_STATE = "android.media.extra.AUDIO_PLUG_STATE";
/**
* Extra used in {@link #ACTION_HDMI_AUDIO_PLUG} to define the maximum number of channels
* supported by the HDMI device.
* The corresponding integer value is only available when the device is plugged in (as expressed
* by {@link #EXTRA_AUDIO_PLUG_STATE}).
*/
public static final String EXTRA_MAX_CHANNEL_COUNT = "android.media.extra.MAX_CHANNEL_COUNT";
/**
* Extra used in {@link #ACTION_HDMI_AUDIO_PLUG} to define the audio encodings supported by
* the connected HDMI device.
* The corresponding array of encoding values is only available when the device is plugged in
* (as expressed by {@link #EXTRA_AUDIO_PLUG_STATE}). Encoding values are defined in
* {@link AudioFormat} (for instance see {@link AudioFormat#ENCODING_PCM_16BIT}). Use
* {@link android.content.Intent#getIntArrayExtra(String)} to retrieve the encoding values.
*/
public static final String EXTRA_ENCODINGS = "android.media.extra.ENCODINGS";
/** The audio stream for phone calls */
public static final int STREAM_VOICE_CALL = AudioSystem.STREAM_VOICE_CALL;
/** The audio stream for system sounds */
public static final int STREAM_SYSTEM = AudioSystem.STREAM_SYSTEM;
/** The audio stream for the phone ring */
public static final int STREAM_RING = AudioSystem.STREAM_RING;
/** The audio stream for music playback */
public static final int STREAM_MUSIC = AudioSystem.STREAM_MUSIC;
/** The audio stream for alarms */
public static final int STREAM_ALARM = AudioSystem.STREAM_ALARM;
/** The audio stream for notifications */
public static final int STREAM_NOTIFICATION = AudioSystem.STREAM_NOTIFICATION;
/** @hide The audio stream for phone calls when connected to bluetooth */
public static final int STREAM_BLUETOOTH_SCO = AudioSystem.STREAM_BLUETOOTH_SCO;
/** @hide The audio stream for enforced system sounds in certain countries (e.g camera in Japan) */
public static final int STREAM_SYSTEM_ENFORCED = AudioSystem.STREAM_SYSTEM_ENFORCED;
/** The audio stream for DTMF Tones */
public static final int STREAM_DTMF = AudioSystem.STREAM_DTMF;
/** @hide The audio stream for text to speech (TTS) */
public static final int STREAM_TTS = AudioSystem.STREAM_TTS;
/** Number of audio streams */
/**
* @deprecated Use AudioSystem.getNumStreamTypes() instead
*/
@Deprecated public static final int NUM_STREAMS = AudioSystem.NUM_STREAMS;
/**
* Increase the ringer volume.
*
* @see #adjustVolume(int, int)
* @see #adjustStreamVolume(int, int, int)
*/
public static final int ADJUST_RAISE = 1;
/**
* Decrease the ringer volume.
*
* @see #adjustVolume(int, int)
* @see #adjustStreamVolume(int, int, int)
*/
public static final int ADJUST_LOWER = -1;
/**
* Maintain the previous ringer volume. This may be useful when needing to
* show the volume toast without actually modifying the volume.
*
* @see #adjustVolume(int, int)
* @see #adjustStreamVolume(int, int, int)
*/
public static final int ADJUST_SAME = 0;
/**
* Mute the volume. Has no effect if the stream is already muted.
*
* @see #adjustVolume(int, int)
* @see #adjustStreamVolume(int, int, int)
*/
public static final int ADJUST_MUTE = -100;
/**
* Unmute the volume. Has no effect if the stream is not muted.
*
* @see #adjustVolume(int, int)
* @see #adjustStreamVolume(int, int, int)
*/
public static final int ADJUST_UNMUTE = 100;
/**
* Toggle the mute state. If muted the stream will be unmuted. If not muted
* the stream will be muted.
*
* @see #adjustVolume(int, int)
* @see #adjustStreamVolume(int, int, int)
*/
public static final int ADJUST_TOGGLE_MUTE = 101;
// Flags should be powers of 2!
/**
* Show a toast containing the current volume.
*
* @see #adjustStreamVolume(int, int, int)
* @see #adjustVolume(int, int)
* @see #setStreamVolume(int, int, int)
* @see #setRingerMode(int)
*/
public static final int FLAG_SHOW_UI = 1 << 0;
/**
* Whether to include ringer modes as possible options when changing volume.
* For example, if true and volume level is 0 and the volume is adjusted
* with {@link #ADJUST_LOWER}, then the ringer mode may switch the silent or
* vibrate mode.
*
* By default this is on for the ring stream. If this flag is included,
* this behavior will be present regardless of the stream type being
* affected by the ringer mode.
*
* @see #adjustVolume(int, int)
* @see #adjustStreamVolume(int, int, int)
*/
public static final int FLAG_ALLOW_RINGER_MODES = 1 << 1;
/**
* Whether to play a sound when changing the volume.
*
* If this is given to {@link #adjustVolume(int, int)} or
* {@link #adjustSuggestedStreamVolume(int, int, int)}, it may be ignored
* in some cases (for example, the decided stream type is not
* {@link AudioManager#STREAM_RING}, or the volume is being adjusted
* downward).
*
* @see #adjustStreamVolume(int, int, int)
* @see #adjustVolume(int, int)
* @see #setStreamVolume(int, int, int)
*/
public static final int FLAG_PLAY_SOUND = 1 << 2;
/**
* Removes any sounds/vibrate that may be in the queue, or are playing (related to
* changing volume).
*/
public static final int FLAG_REMOVE_SOUND_AND_VIBRATE = 1 << 3;
/**
* Whether to vibrate if going into the vibrate ringer mode.
*/
public static final int FLAG_VIBRATE = 1 << 4;
/**
* Indicates to VolumePanel that the volume slider should be disabled as user
* cannot change the stream volume
* @hide
*/
public static final int FLAG_FIXED_VOLUME = 1 << 5;
/**
* Indicates the volume set/adjust call is for Bluetooth absolute volume
* @hide
*/
public static final int FLAG_BLUETOOTH_ABS_VOLUME = 1 << 6;
/**
* Adjusting the volume was prevented due to silent mode, display a hint in the UI.
* @hide
*/
public static final int FLAG_SHOW_SILENT_HINT = 1 << 7;
/**
* Indicates the volume call is for Hdmi Cec system audio volume
* @hide
*/
public static final int FLAG_HDMI_SYSTEM_AUDIO_VOLUME = 1 << 8;
/**
* Indicates that this should only be handled if media is actively playing.
* @hide
*/
public static final int FLAG_ACTIVE_MEDIA_ONLY = 1 << 9;
/**
* Like FLAG_SHOW_UI, but only dialog warnings and confirmations, no sliders.
* @hide
*/
public static final int FLAG_SHOW_UI_WARNINGS = 1 << 10;
/**
* Adjusting the volume down from vibrated was prevented, display a hint in the UI.
* @hide
*/
public static final int FLAG_SHOW_VIBRATE_HINT = 1 << 11;
/**
* Adjusting the volume due to a hardware key press.
* @hide
*/
public static final int FLAG_FROM_KEY = 1 << 12;
private static final String[] FLAG_NAMES = {
"FLAG_SHOW_UI",
"FLAG_ALLOW_RINGER_MODES",
"FLAG_PLAY_SOUND",
"FLAG_REMOVE_SOUND_AND_VIBRATE",
"FLAG_VIBRATE",
"FLAG_FIXED_VOLUME",
"FLAG_BLUETOOTH_ABS_VOLUME",
"FLAG_SHOW_SILENT_HINT",
"FLAG_HDMI_SYSTEM_AUDIO_VOLUME",
"FLAG_ACTIVE_MEDIA_ONLY",
"FLAG_SHOW_UI_WARNINGS",
"FLAG_SHOW_VIBRATE_HINT",
"FLAG_FROM_KEY",
};
/** @hide */
public static String flagsToString(int flags) {
final StringBuilder sb = new StringBuilder();
for (int i = 0; i < FLAG_NAMES.length; i++) {
final int flag = 1 << i;
if ((flags & flag) != 0) {
if (sb.length() > 0) {
sb.append(',');
}
sb.append(FLAG_NAMES[i]);
flags &= ~flag;
}
}
if (flags != 0) {
if (sb.length() > 0) {
sb.append(',');
}
sb.append(flags);
}
return sb.toString();
}
/**
* Ringer mode that will be silent and will not vibrate. (This overrides the
* vibrate setting.)
*
* @see #setRingerMode(int)
* @see #getRingerMode()
*/
public static final int RINGER_MODE_SILENT = 0;
/**
* Ringer mode that will be silent and will vibrate. (This will cause the
* phone ringer to always vibrate, but the notification vibrate to only
* vibrate if set.)
*
* @see #setRingerMode(int)
* @see #getRingerMode()
*/
public static final int RINGER_MODE_VIBRATE = 1;
/**
* Ringer mode that may be audible and may vibrate. It will be audible if
* the volume before changing out of this mode was audible. It will vibrate
* if the vibrate setting is on.
*
* @see #setRingerMode(int)
* @see #getRingerMode()
*/
public static final int RINGER_MODE_NORMAL = 2;
/**
* Maximum valid ringer mode value. Values must start from 0 and be contiguous.
* @hide
*/
public static final int RINGER_MODE_MAX = RINGER_MODE_NORMAL;
/**
* Vibrate type that corresponds to the ringer.
*
* @see #setVibrateSetting(int, int)
* @see #getVibrateSetting(int)
* @see #shouldVibrate(int)
* @deprecated Applications should maintain their own vibrate policy based on
* current ringer mode that can be queried via {@link #getRingerMode()}.
*/
public static final int VIBRATE_TYPE_RINGER = 0;
/**
* Vibrate type that corresponds to notifications.
*
* @see #setVibrateSetting(int, int)
* @see #getVibrateSetting(int)
* @see #shouldVibrate(int)
* @deprecated Applications should maintain their own vibrate policy based on
* current ringer mode that can be queried via {@link #getRingerMode()}.
*/
public static final int VIBRATE_TYPE_NOTIFICATION = 1;
/**
* Vibrate setting that suggests to never vibrate.
*
* @see #setVibrateSetting(int, int)
* @see #getVibrateSetting(int)
* @deprecated Applications should maintain their own vibrate policy based on
* current ringer mode that can be queried via {@link #getRingerMode()}.
*/
public static final int VIBRATE_SETTING_OFF = 0;
/**
* Vibrate setting that suggests to vibrate when possible.
*
* @see #setVibrateSetting(int, int)
* @see #getVibrateSetting(int)
* @deprecated Applications should maintain their own vibrate policy based on
* current ringer mode that can be queried via {@link #getRingerMode()}.
*/
public static final int VIBRATE_SETTING_ON = 1;
/**
* Vibrate setting that suggests to only vibrate when in the vibrate ringer
* mode.
*
* @see #setVibrateSetting(int, int)
* @see #getVibrateSetting(int)
* @deprecated Applications should maintain their own vibrate policy based on
* current ringer mode that can be queried via {@link #getRingerMode()}.
*/
public static final int VIBRATE_SETTING_ONLY_SILENT = 2;
/**
* Suggests using the default stream type. This may not be used in all
* places a stream type is needed.
*/
public static final int USE_DEFAULT_STREAM_TYPE = Integer.MIN_VALUE;
private static IAudioService sService;
/**
* @hide
*/
public AudioManager(Context context) {
setContext(context);
mUseVolumeKeySounds = getContext().getResources().getBoolean(
com.android.internal.R.bool.config_useVolumeKeySounds);
mUseFixedVolume = getContext().getResources().getBoolean(
com.android.internal.R.bool.config_useFixedVolume);
}
private Context getContext() {
if (mApplicationContext == null) {
setContext(mOriginalContext);
}
if (mApplicationContext != null) {
return mApplicationContext;
}
return mOriginalContext;
}
private void setContext(Context context) {
mApplicationContext = context.getApplicationContext();
if (mApplicationContext != null) {
mOriginalContext = null;
} else {
mOriginalContext = context;
}
}
private static IAudioService getService()
{
if (sService != null) {
return sService;
}
IBinder b = ServiceManager.getService(Context.AUDIO_SERVICE);
sService = IAudioService.Stub.asInterface(b);
return sService;
}
/**
* Sends a simulated key event for a media button.
* To simulate a key press, you must first send a KeyEvent built with a
* {@link KeyEvent#ACTION_DOWN} action, then another event with the {@link KeyEvent#ACTION_UP}
* action.
*
The key event will be sent to the current media key event consumer which registered with
* {@link AudioManager#registerMediaButtonEventReceiver(PendingIntent)}.
* @param keyEvent a {@link KeyEvent} instance whose key code is one of
* {@link KeyEvent#KEYCODE_MUTE},
* {@link KeyEvent#KEYCODE_HEADSETHOOK},
* {@link KeyEvent#KEYCODE_MEDIA_PLAY},
* {@link KeyEvent#KEYCODE_MEDIA_PAUSE},
* {@link KeyEvent#KEYCODE_MEDIA_PLAY_PAUSE},
* {@link KeyEvent#KEYCODE_MEDIA_STOP},
* {@link KeyEvent#KEYCODE_MEDIA_NEXT},
* {@link KeyEvent#KEYCODE_MEDIA_PREVIOUS},
* {@link KeyEvent#KEYCODE_MEDIA_REWIND},
* {@link KeyEvent#KEYCODE_MEDIA_RECORD},
* {@link KeyEvent#KEYCODE_MEDIA_FAST_FORWARD},
* {@link KeyEvent#KEYCODE_MEDIA_CLOSE},
* {@link KeyEvent#KEYCODE_MEDIA_EJECT},
* or {@link KeyEvent#KEYCODE_MEDIA_AUDIO_TRACK}.
*/
public void dispatchMediaKeyEvent(KeyEvent keyEvent) {
MediaSessionLegacyHelper helper = MediaSessionLegacyHelper.getHelper(getContext());
helper.sendMediaButtonEvent(keyEvent, false);
}
/**
* @hide
*/
public void preDispatchKeyEvent(KeyEvent event, int stream) {
/*
* If the user hits another key within the play sound delay, then
* cancel the sound
*/
int keyCode = event.getKeyCode();
if (keyCode != KeyEvent.KEYCODE_VOLUME_DOWN && keyCode != KeyEvent.KEYCODE_VOLUME_UP
&& keyCode != KeyEvent.KEYCODE_VOLUME_MUTE
&& mVolumeKeyUpTime + AudioSystem.PLAY_SOUND_DELAY > SystemClock.uptimeMillis()) {
/*
* The user has hit another key during the delay (e.g., 300ms)
* since the last volume key up, so cancel any sounds.
*/
adjustSuggestedStreamVolume(ADJUST_SAME,
stream, AudioManager.FLAG_REMOVE_SOUND_AND_VIBRATE);
}
}
/**
* @hide
*/
public void handleKeyDown(KeyEvent event, int stream) {
int keyCode = event.getKeyCode();
switch (keyCode) {
case KeyEvent.KEYCODE_VOLUME_UP:
case KeyEvent.KEYCODE_VOLUME_DOWN:
/*
* Adjust the volume in on key down since it is more
* responsive to the user.
*/
adjustSuggestedStreamVolume(
keyCode == KeyEvent.KEYCODE_VOLUME_UP
? ADJUST_RAISE
: ADJUST_LOWER,
stream,
FLAG_SHOW_UI | FLAG_VIBRATE);
break;
case KeyEvent.KEYCODE_VOLUME_MUTE:
if (event.getRepeatCount() == 0) {
MediaSessionLegacyHelper.getHelper(getContext())
.sendVolumeKeyEvent(event, false);
}
break;
}
}
/**
* @hide
*/
public void handleKeyUp(KeyEvent event, int stream) {
int keyCode = event.getKeyCode();
switch (keyCode) {
case KeyEvent.KEYCODE_VOLUME_UP:
case KeyEvent.KEYCODE_VOLUME_DOWN:
/*
* Play a sound. This is done on key up since we don't want the
* sound to play when a user holds down volume down to mute.
*/
if (mUseVolumeKeySounds) {
adjustSuggestedStreamVolume(
ADJUST_SAME,
stream,
FLAG_PLAY_SOUND);
}
mVolumeKeyUpTime = SystemClock.uptimeMillis();
break;
case KeyEvent.KEYCODE_VOLUME_MUTE:
MediaSessionLegacyHelper.getHelper(getContext())
.sendVolumeKeyEvent(event, false);
break;
}
}
/**
* Indicates if the device implements a fixed volume policy.
*
Some devices may not have volume control and may operate at a fixed volume,
* and may not enable muting or changing the volume of audio streams.
* This method will return true on such devices.
*
The following APIs have no effect when volume is fixed:
*
* - {@link #adjustVolume(int, int)}
*
- {@link #adjustSuggestedStreamVolume(int, int, int)}
*
- {@link #adjustStreamVolume(int, int, int)}
*
- {@link #setStreamVolume(int, int, int)}
*
- {@link #setRingerMode(int)}
*
- {@link #setStreamSolo(int, boolean)}
*
- {@link #setStreamMute(int, boolean)}
*
*/
public boolean isVolumeFixed() {
return mUseFixedVolume;
}
/**
* Adjusts the volume of a particular stream by one step in a direction.
*
* This method should only be used by applications that replace the platform-wide
* management of audio settings or the main telephony application.
*
* @param streamType The stream type to adjust. One of {@link #STREAM_VOICE_CALL},
* {@link #STREAM_SYSTEM}, {@link #STREAM_RING}, {@link #STREAM_MUSIC} or
* {@link #STREAM_ALARM}
* @param direction The direction to adjust the volume. One of
* {@link #ADJUST_LOWER}, {@link #ADJUST_RAISE}, or
* {@link #ADJUST_SAME}.
* @param flags One or more flags.
* @see #adjustVolume(int, int)
* @see #setStreamVolume(int, int, int)
*/
public void adjustStreamVolume(int streamType, int direction, int flags) {
IAudioService service = getService();
try {
service.adjustStreamVolume(streamType, direction, flags,
getContext().getOpPackageName());
} catch (RemoteException e) {
Log.e(TAG, "Dead object in adjustStreamVolume", e);
}
}
/**
* Adjusts the volume of the most relevant stream. For example, if a call is
* active, it will have the highest priority regardless of if the in-call
* screen is showing. Another example, if music is playing in the background
* and a call is not active, the music stream will be adjusted.
*
* This method should only be used by applications that replace the
* platform-wide management of audio settings or the main telephony
* application.
*
* This method has no effect if the device implements a fixed volume policy
* as indicated by {@link #isVolumeFixed()}.
*
* @param direction The direction to adjust the volume. One of
* {@link #ADJUST_LOWER}, {@link #ADJUST_RAISE},
* {@link #ADJUST_SAME}, {@link #ADJUST_MUTE},
* {@link #ADJUST_UNMUTE}, or {@link #ADJUST_TOGGLE_MUTE}.
* @param flags One or more flags.
* @see #adjustSuggestedStreamVolume(int, int, int)
* @see #adjustStreamVolume(int, int, int)
* @see #setStreamVolume(int, int, int)
* @see #isVolumeFixed()
*/
public void adjustVolume(int direction, int flags) {
MediaSessionLegacyHelper helper = MediaSessionLegacyHelper.getHelper(getContext());
helper.sendAdjustVolumeBy(USE_DEFAULT_STREAM_TYPE, direction, flags);
}
/**
* Adjusts the volume of the most relevant stream, or the given fallback
* stream.
*
* This method should only be used by applications that replace the
* platform-wide management of audio settings or the main telephony
* application.
*
* This method has no effect if the device implements a fixed volume policy
* as indicated by {@link #isVolumeFixed()}.
*
* @param direction The direction to adjust the volume. One of
* {@link #ADJUST_LOWER}, {@link #ADJUST_RAISE},
* {@link #ADJUST_SAME}, {@link #ADJUST_MUTE},
* {@link #ADJUST_UNMUTE}, or {@link #ADJUST_TOGGLE_MUTE}.
* @param suggestedStreamType The stream type that will be used if there
* isn't a relevant stream. {@link #USE_DEFAULT_STREAM_TYPE} is
* valid here.
* @param flags One or more flags.
* @see #adjustVolume(int, int)
* @see #adjustStreamVolume(int, int, int)
* @see #setStreamVolume(int, int, int)
* @see #isVolumeFixed()
*/
public void adjustSuggestedStreamVolume(int direction, int suggestedStreamType, int flags) {
MediaSessionLegacyHelper helper = MediaSessionLegacyHelper.getHelper(getContext());
helper.sendAdjustVolumeBy(suggestedStreamType, direction, flags);
}
/** @hide */
public void setMasterMute(boolean mute, int flags) {
IAudioService service = getService();
try {
service.setMasterMute(mute, flags, getContext().getOpPackageName(),
UserHandle.getCallingUserId());
} catch (RemoteException e) {
Log.e(TAG, "Dead object in setMasterMute", e);
}
}
/**
* Returns the current ringtone mode.
*
* @return The current ringtone mode, one of {@link #RINGER_MODE_NORMAL},
* {@link #RINGER_MODE_SILENT}, or {@link #RINGER_MODE_VIBRATE}.
* @see #setRingerMode(int)
*/
public int getRingerMode() {
IAudioService service = getService();
try {
return service.getRingerModeExternal();
} catch (RemoteException e) {
Log.e(TAG, "Dead object in getRingerMode", e);
return RINGER_MODE_NORMAL;
}
}
/**
* Checks valid ringer mode values.
*
* @return true if the ringer mode indicated is valid, false otherwise.
*
* @see #setRingerMode(int)
* @hide
*/
public static boolean isValidRingerMode(int ringerMode) {
if (ringerMode < 0 || ringerMode > RINGER_MODE_MAX) {
return false;
}
IAudioService service = getService();
try {
return service.isValidRingerMode(ringerMode);
} catch (RemoteException e) {
Log.e(TAG, "Dead object in isValidRingerMode", e);
return false;
}
}
/**
* Returns the maximum volume index for a particular stream.
*
* @param streamType The stream type whose maximum volume index is returned.
* @return The maximum valid volume index for the stream.
* @see #getStreamVolume(int)
*/
public int getStreamMaxVolume(int streamType) {
IAudioService service = getService();
try {
return service.getStreamMaxVolume(streamType);
} catch (RemoteException e) {
Log.e(TAG, "Dead object in getStreamMaxVolume", e);
return 0;
}
}
/**
* Returns the minimum volume index for a particular stream.
*
* @param streamType The stream type whose minimum volume index is returned.
* @return The minimum valid volume index for the stream.
* @see #getStreamVolume(int)
* @hide
*/
public int getStreamMinVolume(int streamType) {
IAudioService service = getService();
try {
return service.getStreamMinVolume(streamType);
} catch (RemoteException e) {
Log.e(TAG, "Dead object in getStreamMinVolume", e);
return 0;
}
}
/**
* Returns the current volume index for a particular stream.
*
* @param streamType The stream type whose volume index is returned.
* @return The current volume index for the stream.
* @see #getStreamMaxVolume(int)
* @see #setStreamVolume(int, int, int)
*/
public int getStreamVolume(int streamType) {
IAudioService service = getService();
try {
return service.getStreamVolume(streamType);
} catch (RemoteException e) {
Log.e(TAG, "Dead object in getStreamVolume", e);
return 0;
}
}
/**
* Get last audible volume before stream was muted.
*
* @hide
*/
public int getLastAudibleStreamVolume(int streamType) {
IAudioService service = getService();
try {
return service.getLastAudibleStreamVolume(streamType);
} catch (RemoteException e) {
Log.e(TAG, "Dead object in getLastAudibleStreamVolume", e);
return 0;
}
}
/**
* Get the stream type whose volume is driving the UI sounds volume.
* UI sounds are screen lock/unlock, camera shutter, key clicks...
* It is assumed that this stream type is also tied to ringer mode changes.
* @hide
*/
public int getUiSoundsStreamType() {
IAudioService service = getService();
try {
return service.getUiSoundsStreamType();
} catch (RemoteException e) {
Log.e(TAG, "Dead object in getUiSoundsStreamType", e);
return STREAM_RING;
}
}
/**
* Sets the ringer mode.
*
* Silent mode will mute the volume and will not vibrate. Vibrate mode will
* mute the volume and vibrate. Normal mode will be audible and may vibrate
* according to user settings.
*
This method has no effect if the device implements a fixed volume policy
* as indicated by {@link #isVolumeFixed()}.
* @param ringerMode The ringer mode, one of {@link #RINGER_MODE_NORMAL},
* {@link #RINGER_MODE_SILENT}, or {@link #RINGER_MODE_VIBRATE}.
* @see #getRingerMode()
* @see #isVolumeFixed()
*/
public void setRingerMode(int ringerMode) {
if (!isValidRingerMode(ringerMode)) {
return;
}
IAudioService service = getService();
try {
service.setRingerModeExternal(ringerMode, getContext().getOpPackageName());
} catch (RemoteException e) {
Log.e(TAG, "Dead object in setRingerMode", e);
}
}
/**
* Sets the volume index for a particular stream.
*
This method has no effect if the device implements a fixed volume policy
* as indicated by {@link #isVolumeFixed()}.
* @param streamType The stream whose volume index should be set.
* @param index The volume index to set. See
* {@link #getStreamMaxVolume(int)} for the largest valid value.
* @param flags One or more flags.
* @see #getStreamMaxVolume(int)
* @see #getStreamVolume(int)
* @see #isVolumeFixed()
*/
public void setStreamVolume(int streamType, int index, int flags) {
IAudioService service = getService();
try {
service.setStreamVolume(streamType, index, flags, getContext().getOpPackageName());
} catch (RemoteException e) {
Log.e(TAG, "Dead object in setStreamVolume", e);
}
}
/**
* Solo or unsolo a particular stream.
*
* Do not use. This method has been deprecated and is now a no-op.
* {@link #requestAudioFocus} should be used for exclusive audio playback.
*
* @param streamType The stream to be soloed/unsoloed.
* @param state The required solo state: true for solo ON, false for solo
* OFF
* @see #isVolumeFixed()
* @deprecated Do not use. If you need exclusive audio playback use
* {@link #requestAudioFocus}.
*/
@Deprecated
public void setStreamSolo(int streamType, boolean state) {
Log.w(TAG, "setStreamSolo has been deprecated. Do not use.");
}
/**
* Mute or unmute an audio stream.
*
* This method should only be used by applications that replace the
* platform-wide management of audio settings or the main telephony
* application.
*
* This method has no effect if the device implements a fixed volume policy
* as indicated by {@link #isVolumeFixed()}.
*
* This method was deprecated in API level 22. Prior to API level 22 this
* method had significantly different behavior and should be used carefully.
* The following applies only to pre-22 platforms:
*
* - The mute command is protected against client process death: if a
* process with an active mute request on a stream dies, this stream will be
* unmuted automatically.
* - The mute requests for a given stream are cumulative: the AudioManager
* can receive several mute requests from one or more clients and the stream
* will be unmuted only when the same number of unmute requests are
* received.
* - For a better user experience, applications MUST unmute a muted stream
* in onPause() and mute is again in onResume() if appropriate.
*
*
* @param streamType The stream to be muted/unmuted.
* @param state The required mute state: true for mute ON, false for mute
* OFF
* @see #isVolumeFixed()
* @deprecated Use {@link #adjustStreamVolume(int, int, int)} with
* {@link #ADJUST_MUTE} or {@link #ADJUST_UNMUTE} instead.
*/
@Deprecated
public void setStreamMute(int streamType, boolean state) {
Log.w(TAG, "setStreamMute is deprecated. adjustStreamVolume should be used instead.");
int direction = state ? ADJUST_MUTE : ADJUST_UNMUTE;
if (streamType == AudioManager.USE_DEFAULT_STREAM_TYPE) {
adjustSuggestedStreamVolume(direction, streamType, 0);
} else {
adjustStreamVolume(streamType, direction, 0);
}
}
/**
* Returns the current mute state for a particular stream.
*
* @param streamType The stream to get mute state for.
* @return The mute state for the given stream.
* @see #adjustStreamVolume(int, int, int)
*/
public boolean isStreamMute(int streamType) {
IAudioService service = getService();
try {
return service.isStreamMute(streamType);
} catch (RemoteException e) {
Log.e(TAG, "Dead object in isStreamMute", e);
return false;
}
}
/**
* get master mute state.
*
* @hide
*/
public boolean isMasterMute() {
IAudioService service = getService();
try {
return service.isMasterMute();
} catch (RemoteException e) {
Log.e(TAG, "Dead object in isMasterMute", e);
return false;
}
}
/**
* forces the stream controlled by hard volume keys
* specifying streamType == -1 releases control to the
* logic.
*
* @hide
*/
public void forceVolumeControlStream(int streamType) {
IAudioService service = getService();
try {
service.forceVolumeControlStream(streamType, mICallBack);
} catch (RemoteException e) {
Log.e(TAG, "Dead object in forceVolumeControlStream", e);
}
}
/**
* Returns whether a particular type should vibrate according to user
* settings and the current ringer mode.
*
* This shouldn't be needed by most clients that use notifications to
* vibrate. The notification manager will not vibrate if the policy doesn't
* allow it, so the client should always set a vibrate pattern and let the
* notification manager control whether or not to actually vibrate.
*
* @param vibrateType The type of vibrate. One of
* {@link #VIBRATE_TYPE_NOTIFICATION} or
* {@link #VIBRATE_TYPE_RINGER}.
* @return Whether the type should vibrate at the instant this method is
* called.
* @see #setVibrateSetting(int, int)
* @see #getVibrateSetting(int)
* @deprecated Applications should maintain their own vibrate policy based on
* current ringer mode that can be queried via {@link #getRingerMode()}.
*/
public boolean shouldVibrate(int vibrateType) {
IAudioService service = getService();
try {
return service.shouldVibrate(vibrateType);
} catch (RemoteException e) {
Log.e(TAG, "Dead object in shouldVibrate", e);
return false;
}
}
/**
* Returns whether the user's vibrate setting for a vibrate type.
*
* This shouldn't be needed by most clients that want to vibrate, instead
* see {@link #shouldVibrate(int)}.
*
* @param vibrateType The type of vibrate. One of
* {@link #VIBRATE_TYPE_NOTIFICATION} or
* {@link #VIBRATE_TYPE_RINGER}.
* @return The vibrate setting, one of {@link #VIBRATE_SETTING_ON},
* {@link #VIBRATE_SETTING_OFF}, or
* {@link #VIBRATE_SETTING_ONLY_SILENT}.
* @see #setVibrateSetting(int, int)
* @see #shouldVibrate(int)
* @deprecated Applications should maintain their own vibrate policy based on
* current ringer mode that can be queried via {@link #getRingerMode()}.
*/
public int getVibrateSetting(int vibrateType) {
IAudioService service = getService();
try {
return service.getVibrateSetting(vibrateType);
} catch (RemoteException e) {
Log.e(TAG, "Dead object in getVibrateSetting", e);
return VIBRATE_SETTING_OFF;
}
}
/**
* Sets the setting for when the vibrate type should vibrate.
*
* This method should only be used by applications that replace the platform-wide
* management of audio settings or the main telephony application.
*
* @param vibrateType The type of vibrate. One of
* {@link #VIBRATE_TYPE_NOTIFICATION} or
* {@link #VIBRATE_TYPE_RINGER}.
* @param vibrateSetting The vibrate setting, one of
* {@link #VIBRATE_SETTING_ON},
* {@link #VIBRATE_SETTING_OFF}, or
* {@link #VIBRATE_SETTING_ONLY_SILENT}.
* @see #getVibrateSetting(int)
* @see #shouldVibrate(int)
* @deprecated Applications should maintain their own vibrate policy based on
* current ringer mode that can be queried via {@link #getRingerMode()}.
*/
public void setVibrateSetting(int vibrateType, int vibrateSetting) {
IAudioService service = getService();
try {
service.setVibrateSetting(vibrateType, vibrateSetting);
} catch (RemoteException e) {
Log.e(TAG, "Dead object in setVibrateSetting", e);
}
}
/**
* Sets the speakerphone on or off.
*
* This method should only be used by applications that replace the platform-wide
* management of audio settings or the main telephony application.
*
* @param on set true to turn on speakerphone;
* false to turn it off
*/
public void setSpeakerphoneOn(boolean on){
IAudioService service = getService();
try {
service.setSpeakerphoneOn(on);
} catch (RemoteException e) {
Log.e(TAG, "Dead object in setSpeakerphoneOn", e);
}
}
/**
* Checks whether the speakerphone is on or off.
*
* @return true if speakerphone is on, false if it's off
*/
public boolean isSpeakerphoneOn() {
IAudioService service = getService();
try {
return service.isSpeakerphoneOn();
} catch (RemoteException e) {
Log.e(TAG, "Dead object in isSpeakerphoneOn", e);
return false;
}
}
//====================================================================
// Bluetooth SCO control
/**
* Sticky broadcast intent action indicating that the bluetoooth SCO audio
* connection state has changed. The intent contains on extra {@link #EXTRA_SCO_AUDIO_STATE}
* indicating the new state which is either {@link #SCO_AUDIO_STATE_DISCONNECTED}
* or {@link #SCO_AUDIO_STATE_CONNECTED}
*
* @see #startBluetoothSco()
* @deprecated Use {@link #ACTION_SCO_AUDIO_STATE_UPDATED} instead
*/
@Deprecated
@SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
public static final String ACTION_SCO_AUDIO_STATE_CHANGED =
"android.media.SCO_AUDIO_STATE_CHANGED";
/**
* Sticky broadcast intent action indicating that the bluetoooth SCO audio
* connection state has been updated.
*
This intent has two extras:
*
* - {@link #EXTRA_SCO_AUDIO_STATE} - The new SCO audio state.
* - {@link #EXTRA_SCO_AUDIO_PREVIOUS_STATE}- The previous SCO audio state.
*
* EXTRA_SCO_AUDIO_STATE or EXTRA_SCO_AUDIO_PREVIOUS_STATE can be any of:
*
* - {@link #SCO_AUDIO_STATE_DISCONNECTED},
* - {@link #SCO_AUDIO_STATE_CONNECTING} or
* - {@link #SCO_AUDIO_STATE_CONNECTED},
*
* @see #startBluetoothSco()
*/
@SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
public static final String ACTION_SCO_AUDIO_STATE_UPDATED =
"android.media.ACTION_SCO_AUDIO_STATE_UPDATED";
/**
* Extra for intent {@link #ACTION_SCO_AUDIO_STATE_CHANGED} or
* {@link #ACTION_SCO_AUDIO_STATE_UPDATED} containing the new bluetooth SCO connection state.
*/
public static final String EXTRA_SCO_AUDIO_STATE =
"android.media.extra.SCO_AUDIO_STATE";
/**
* Extra for intent {@link #ACTION_SCO_AUDIO_STATE_UPDATED} containing the previous
* bluetooth SCO connection state.
*/
public static final String EXTRA_SCO_AUDIO_PREVIOUS_STATE =
"android.media.extra.SCO_AUDIO_PREVIOUS_STATE";
/**
* Value for extra EXTRA_SCO_AUDIO_STATE or EXTRA_SCO_AUDIO_PREVIOUS_STATE
* indicating that the SCO audio channel is not established
*/
public static final int SCO_AUDIO_STATE_DISCONNECTED = 0;
/**
* Value for extra {@link #EXTRA_SCO_AUDIO_STATE} or {@link #EXTRA_SCO_AUDIO_PREVIOUS_STATE}
* indicating that the SCO audio channel is established
*/
public static final int SCO_AUDIO_STATE_CONNECTED = 1;
/**
* Value for extra EXTRA_SCO_AUDIO_STATE or EXTRA_SCO_AUDIO_PREVIOUS_STATE
* indicating that the SCO audio channel is being established
*/
public static final int SCO_AUDIO_STATE_CONNECTING = 2;
/**
* Value for extra EXTRA_SCO_AUDIO_STATE indicating that
* there was an error trying to obtain the state
*/
public static final int SCO_AUDIO_STATE_ERROR = -1;
/**
* Indicates if current platform supports use of SCO for off call use cases.
* Application wanted to use bluetooth SCO audio when the phone is not in call
* must first call this method to make sure that the platform supports this
* feature.
* @return true if bluetooth SCO can be used for audio when not in call
* false otherwise
* @see #startBluetoothSco()
*/
public boolean isBluetoothScoAvailableOffCall() {
return getContext().getResources().getBoolean(
com.android.internal.R.bool.config_bluetooth_sco_off_call);
}
/**
* Start bluetooth SCO audio connection.
* Requires Permission:
* {@link android.Manifest.permission#MODIFY_AUDIO_SETTINGS}.
*
This method can be used by applications wanting to send and received audio
* to/from a bluetooth SCO headset while the phone is not in call.
*
As the SCO connection establishment can take several seconds,
* applications should not rely on the connection to be available when the method
* returns but instead register to receive the intent {@link #ACTION_SCO_AUDIO_STATE_UPDATED}
* and wait for the state to be {@link #SCO_AUDIO_STATE_CONNECTED}.
*
As the ACTION_SCO_AUDIO_STATE_UPDATED intent is sticky, the application can check the SCO
* audio state before calling startBluetoothSco() by reading the intent returned by the receiver
* registration. If the state is already CONNECTED, no state change will be received via the
* intent after calling startBluetoothSco(). It is however useful to call startBluetoothSco()
* so that the connection stays active in case the current initiator stops the connection.
*
Unless the connection is already active as described above, the state will always
* transition from DISCONNECTED to CONNECTING and then either to CONNECTED if the connection
* succeeds or back to DISCONNECTED if the connection fails (e.g no headset is connected).
*
When finished with the SCO connection or if the establishment fails, the application must
* call {@link #stopBluetoothSco()} to clear the request and turn down the bluetooth connection.
*
Even if a SCO connection is established, the following restrictions apply on audio
* output streams so that they can be routed to SCO headset:
*
* - the stream type must be {@link #STREAM_VOICE_CALL}
* - the format must be mono
* - the sampling must be 16kHz or 8kHz
*
* The following restrictions apply on input streams:
*
* - the format must be mono
* - the sampling must be 8kHz
*
* Note that the phone application always has the priority on the usage of the SCO
* connection for telephony. If this method is called while the phone is in call
* it will be ignored. Similarly, if a call is received or sent while an application
* is using the SCO connection, the connection will be lost for the application and NOT
* returned automatically when the call ends.
*
NOTE: up to and including API version
* {@link android.os.Build.VERSION_CODES#JELLY_BEAN_MR1}, this method initiates a virtual
* voice call to the bluetooth headset.
* After API version {@link android.os.Build.VERSION_CODES#JELLY_BEAN_MR2} only a raw SCO audio
* connection is established.
* @see #stopBluetoothSco()
* @see #ACTION_SCO_AUDIO_STATE_UPDATED
*/
public void startBluetoothSco(){
IAudioService service = getService();
try {
service.startBluetoothSco(mICallBack,
getContext().getApplicationInfo().targetSdkVersion);
} catch (RemoteException e) {
Log.e(TAG, "Dead object in startBluetoothSco", e);
}
}
/**
* @hide
* Start bluetooth SCO audio connection in virtual call mode.
*
Requires Permission:
* {@link android.Manifest.permission#MODIFY_AUDIO_SETTINGS}.
*
Similar to {@link #startBluetoothSco()} with explicit selection of virtual call mode.
* Telephony and communication applications (VoIP, Video Chat) should preferably select
* virtual call mode.
* Applications using voice input for search or commands should first try raw audio connection
* with {@link #startBluetoothSco()} and fall back to startBluetoothScoVirtualCall() in case of
* failure.
* @see #startBluetoothSco()
* @see #stopBluetoothSco()
* @see #ACTION_SCO_AUDIO_STATE_UPDATED
*/
public void startBluetoothScoVirtualCall() {
IAudioService service = getService();
try {
service.startBluetoothScoVirtualCall(mICallBack);
} catch (RemoteException e) {
Log.e(TAG, "Dead object in startBluetoothScoVirtualCall", e);
}
}
/**
* Stop bluetooth SCO audio connection.
*
Requires Permission:
* {@link android.Manifest.permission#MODIFY_AUDIO_SETTINGS}.
*
This method must be called by applications having requested the use of
* bluetooth SCO audio with {@link #startBluetoothSco()} when finished with the SCO
* connection or if connection fails.
* @see #startBluetoothSco()
*/
// Also used for connections started with {@link #startBluetoothScoVirtualCall()}
public void stopBluetoothSco(){
IAudioService service = getService();
try {
service.stopBluetoothSco(mICallBack);
} catch (RemoteException e) {
Log.e(TAG, "Dead object in stopBluetoothSco", e);
}
}
/**
* Request use of Bluetooth SCO headset for communications.
*
* This method should only be used by applications that replace the platform-wide
* management of audio settings or the main telephony application.
*
* @param on set true to use bluetooth SCO for communications;
* false to not use bluetooth SCO for communications
*/
public void setBluetoothScoOn(boolean on){
IAudioService service = getService();
try {
service.setBluetoothScoOn(on);
} catch (RemoteException e) {
Log.e(TAG, "Dead object in setBluetoothScoOn", e);
}
}
/**
* Checks whether communications use Bluetooth SCO.
*
* @return true if SCO is used for communications;
* false if otherwise
*/
public boolean isBluetoothScoOn() {
IAudioService service = getService();
try {
return service.isBluetoothScoOn();
} catch (RemoteException e) {
Log.e(TAG, "Dead object in isBluetoothScoOn", e);
return false;
}
}
/**
* @param on set true to route A2DP audio to/from Bluetooth
* headset; false disable A2DP audio
* @deprecated Do not use.
*/
@Deprecated public void setBluetoothA2dpOn(boolean on){
}
/**
* Checks whether A2DP audio routing to the Bluetooth headset is on or off.
*
* @return true if A2DP audio is being routed to/from Bluetooth headset;
* false if otherwise
*/
public boolean isBluetoothA2dpOn() {
if (AudioSystem.getDeviceConnectionState(DEVICE_OUT_BLUETOOTH_A2DP,"")
== AudioSystem.DEVICE_STATE_UNAVAILABLE) {
return false;
} else {
return true;
}
}
/**
* Sets audio routing to the wired headset on or off.
*
* @param on set true to route audio to/from wired
* headset; false disable wired headset audio
* @deprecated Do not use.
*/
@Deprecated public void setWiredHeadsetOn(boolean on){
}
/**
* Checks whether a wired headset is connected or not.
*
This is not a valid indication that audio playback is
* actually over the wired headset as audio routing depends on other conditions.
*
* @return true if a wired headset is connected.
* false if otherwise
* @deprecated Use only to check is a headset is connected or not.
*/
public boolean isWiredHeadsetOn() {
if (AudioSystem.getDeviceConnectionState(DEVICE_OUT_WIRED_HEADSET,"")
== AudioSystem.DEVICE_STATE_UNAVAILABLE &&
AudioSystem.getDeviceConnectionState(DEVICE_OUT_WIRED_HEADPHONE,"")
== AudioSystem.DEVICE_STATE_UNAVAILABLE) {
return false;
} else {
return true;
}
}
/**
* Sets the microphone mute on or off.
*
* This method should only be used by applications that replace the platform-wide
* management of audio settings or the main telephony application.
*
* @param on set true to mute the microphone;
* false to turn mute off
*/
public void setMicrophoneMute(boolean on) {
IAudioService service = getService();
try {
service.setMicrophoneMute(on, getContext().getOpPackageName(),
UserHandle.getCallingUserId());
} catch (RemoteException e) {
Log.e(TAG, "Dead object in setMicrophoneMute", e);
}
}
/**
* Checks whether the microphone mute is on or off.
*
* @return true if microphone is muted, false if it's not
*/
public boolean isMicrophoneMute() {
return AudioSystem.isMicrophoneMuted();
}
/**
* Sets the audio mode.
*
* The audio mode encompasses audio routing AND the behavior of
* the telephony layer. Therefore this method should only be used by applications that
* replace the platform-wide management of audio settings or the main telephony application.
* In particular, the {@link #MODE_IN_CALL} mode should only be used by the telephony
* application when it places a phone call, as it will cause signals from the radio layer
* to feed the platform mixer.
*
* @param mode the requested audio mode ({@link #MODE_NORMAL}, {@link #MODE_RINGTONE},
* {@link #MODE_IN_CALL} or {@link #MODE_IN_COMMUNICATION}).
* Informs the HAL about the current audio state so that
* it can route the audio appropriately.
*/
public void setMode(int mode) {
IAudioService service = getService();
try {
service.setMode(mode, mICallBack, mApplicationContext.getOpPackageName());
} catch (RemoteException e) {
Log.e(TAG, "Dead object in setMode", e);
}
}
/**
* Returns the current audio mode.
*
* @return the current audio mode ({@link #MODE_NORMAL}, {@link #MODE_RINGTONE},
* {@link #MODE_IN_CALL} or {@link #MODE_IN_COMMUNICATION}).
* Returns the current current audio state from the HAL.
*/
public int getMode() {
IAudioService service = getService();
try {
return service.getMode();
} catch (RemoteException e) {
Log.e(TAG, "Dead object in getMode", e);
return MODE_INVALID;
}
}
/* modes for setMode/getMode/setRoute/getRoute */
/**
* Audio harware modes.
*/
/**
* Invalid audio mode.
*/
public static final int MODE_INVALID = AudioSystem.MODE_INVALID;
/**
* Current audio mode. Used to apply audio routing to current mode.
*/
public static final int MODE_CURRENT = AudioSystem.MODE_CURRENT;
/**
* Normal audio mode: not ringing and no call established.
*/
public static final int MODE_NORMAL = AudioSystem.MODE_NORMAL;
/**
* Ringing audio mode. An incoming is being signaled.
*/
public static final int MODE_RINGTONE = AudioSystem.MODE_RINGTONE;
/**
* In call audio mode. A telephony call is established.
*/
public static final int MODE_IN_CALL = AudioSystem.MODE_IN_CALL;
/**
* In communication audio mode. An audio/video chat or VoIP call is established.
*/
public static final int MODE_IN_COMMUNICATION = AudioSystem.MODE_IN_COMMUNICATION;
/* Routing bits for setRouting/getRouting API */
/**
* Routing audio output to earpiece
* @deprecated Do not set audio routing directly, use setSpeakerphoneOn(),
* setBluetoothScoOn() methods instead.
*/
@Deprecated public static final int ROUTE_EARPIECE = AudioSystem.ROUTE_EARPIECE;
/**
* Routing audio output to speaker
* @deprecated Do not set audio routing directly, use setSpeakerphoneOn(),
* setBluetoothScoOn() methods instead.
*/
@Deprecated public static final int ROUTE_SPEAKER = AudioSystem.ROUTE_SPEAKER;
/**
* @deprecated use {@link #ROUTE_BLUETOOTH_SCO}
* @deprecated Do not set audio routing directly, use setSpeakerphoneOn(),
* setBluetoothScoOn() methods instead.
*/
@Deprecated public static final int ROUTE_BLUETOOTH = AudioSystem.ROUTE_BLUETOOTH_SCO;
/**
* Routing audio output to bluetooth SCO
* @deprecated Do not set audio routing directly, use setSpeakerphoneOn(),
* setBluetoothScoOn() methods instead.
*/
@Deprecated public static final int ROUTE_BLUETOOTH_SCO = AudioSystem.ROUTE_BLUETOOTH_SCO;
/**
* Routing audio output to headset
* @deprecated Do not set audio routing directly, use setSpeakerphoneOn(),
* setBluetoothScoOn() methods instead.
*/
@Deprecated public static final int ROUTE_HEADSET = AudioSystem.ROUTE_HEADSET;
/**
* Routing audio output to bluetooth A2DP
* @deprecated Do not set audio routing directly, use setSpeakerphoneOn(),
* setBluetoothScoOn() methods instead.
*/
@Deprecated public static final int ROUTE_BLUETOOTH_A2DP = AudioSystem.ROUTE_BLUETOOTH_A2DP;
/**
* Used for mask parameter of {@link #setRouting(int,int,int)}.
* @deprecated Do not set audio routing directly, use setSpeakerphoneOn(),
* setBluetoothScoOn() methods instead.
*/
@Deprecated public static final int ROUTE_ALL = AudioSystem.ROUTE_ALL;
/**
* Sets the audio routing for a specified mode
*
* @param mode audio mode to change route. E.g., MODE_RINGTONE.
* @param routes bit vector of routes requested, created from one or
* more of ROUTE_xxx types. Set bits indicate that route should be on
* @param mask bit vector of routes to change, created from one or more of
* ROUTE_xxx types. Unset bits indicate the route should be left unchanged
*
* @deprecated Do not set audio routing directly, use setSpeakerphoneOn(),
* setBluetoothScoOn() methods instead.
*/
@Deprecated
public void setRouting(int mode, int routes, int mask) {
}
/**
* Returns the current audio routing bit vector for a specified mode.
*
* @param mode audio mode to get route (e.g., MODE_RINGTONE)
* @return an audio route bit vector that can be compared with ROUTE_xxx
* bits
* @deprecated Do not query audio routing directly, use isSpeakerphoneOn(),
* isBluetoothScoOn(), isBluetoothA2dpOn() and isWiredHeadsetOn() methods instead.
*/
@Deprecated
public int getRouting(int mode) {
return -1;
}
/**
* Checks whether any music is active.
*
* @return true if any music tracks are active.
*/
public boolean isMusicActive() {
return AudioSystem.isStreamActive(STREAM_MUSIC, 0);
}
/**
* @hide
* Checks whether any music or media is actively playing on a remote device (e.g. wireless
* display). Note that BT audio sinks are not considered remote devices.
* @return true if {@link AudioManager#STREAM_MUSIC} is active on a remote device
*/
public boolean isMusicActiveRemotely() {
return AudioSystem.isStreamActiveRemotely(STREAM_MUSIC, 0);
}
/**
* @hide
* Checks whether the current audio focus is exclusive.
* @return true if the top of the audio focus stack requested focus
* with {@link #AUDIOFOCUS_GAIN_TRANSIENT_EXCLUSIVE}
*/
public boolean isAudioFocusExclusive() {
IAudioService service = getService();
try {
return service.getCurrentAudioFocus() == AUDIOFOCUS_GAIN_TRANSIENT_EXCLUSIVE;
} catch (RemoteException e) {
Log.e(TAG, "Dead object in isAudioFocusExclusive()", e);
return false;
}
}
/**
* Return a new audio session identifier not associated with any player or effect.
* An audio session identifier is a system wide unique identifier for a set of audio streams
* (one or more mixed together).
*
The primary use of the audio session ID is to associate audio effects to audio players,
* such as {@link MediaPlayer} or {@link AudioTrack}: all audio effects sharing the same audio
* session ID will be applied to the mixed audio content of the players that share the same
* audio session.
*
This method can for instance be used when creating one of the
* {@link android.media.audiofx.AudioEffect} objects to define the audio session of the effect,
* or to specify a session for a speech synthesis utterance
* in {@link android.speech.tts.TextToSpeech.Engine}.
* @return a new unclaimed and unused audio session identifier, or {@link #ERROR} when the
* system failed to generate a new session, a condition in which audio playback or recording
* will subsequently fail as well.
*/
public int generateAudioSessionId() {
int session = AudioSystem.newAudioSessionId();
if (session > 0) {
return session;
} else {
Log.e(TAG, "Failure to generate a new audio session ID");
return ERROR;
}
}
/**
* A special audio session ID to indicate that the audio session ID isn't known and the
* framework should generate a new value. This can be used when building a new
* {@link AudioTrack} instance with
* {@link AudioTrack#AudioTrack(AudioAttributes, AudioFormat, int, int, int)}.
*/
public static final int AUDIO_SESSION_ID_GENERATE = AudioSystem.AUDIO_SESSION_ALLOCATE;
/*
* Sets a generic audio configuration parameter. The use of these parameters
* are platform dependant, see libaudio
*
* ** Temporary interface - DO NOT USE
*
* TODO: Replace with a more generic key:value get/set mechanism
*
* param key name of parameter to set. Must not be null.
* param value value of parameter. Must not be null.
*/
/**
* @hide
* @deprecated Use {@link #setParameters(String)} instead
*/
@Deprecated public void setParameter(String key, String value) {
setParameters(key+"="+value);
}
/**
* Sets a variable number of parameter values to audio hardware.
*
* @param keyValuePairs list of parameters key value pairs in the form:
* key1=value1;key2=value2;...
*
*/
public void setParameters(String keyValuePairs) {
AudioSystem.setParameters(keyValuePairs);
}
/**
* Gets a variable number of parameter values from audio hardware.
*
* @param keys list of parameters
* @return list of parameters key value pairs in the form:
* key1=value1;key2=value2;...
*/
public String getParameters(String keys) {
return AudioSystem.getParameters(keys);
}
/* Sound effect identifiers */
/**
* Keyboard and direction pad click sound
* @see #playSoundEffect(int)
*/
public static final int FX_KEY_CLICK = 0;
/**
* Focus has moved up
* @see #playSoundEffect(int)
*/
public static final int FX_FOCUS_NAVIGATION_UP = 1;
/**
* Focus has moved down
* @see #playSoundEffect(int)
*/
public static final int FX_FOCUS_NAVIGATION_DOWN = 2;
/**
* Focus has moved left
* @see #playSoundEffect(int)
*/
public static final int FX_FOCUS_NAVIGATION_LEFT = 3;
/**
* Focus has moved right
* @see #playSoundEffect(int)
*/
public static final int FX_FOCUS_NAVIGATION_RIGHT = 4;
/**
* IME standard keypress sound
* @see #playSoundEffect(int)
*/
public static final int FX_KEYPRESS_STANDARD = 5;
/**
* IME spacebar keypress sound
* @see #playSoundEffect(int)
*/
public static final int FX_KEYPRESS_SPACEBAR = 6;
/**
* IME delete keypress sound
* @see #playSoundEffect(int)
*/
public static final int FX_KEYPRESS_DELETE = 7;
/**
* IME return_keypress sound
* @see #playSoundEffect(int)
*/
public static final int FX_KEYPRESS_RETURN = 8;
/**
* Invalid keypress sound
* @see #playSoundEffect(int)
*/
public static final int FX_KEYPRESS_INVALID = 9;
/**
* @hide Number of sound effects
*/
public static final int NUM_SOUND_EFFECTS = 10;
/**
* Plays a sound effect (Key clicks, lid open/close...)
* @param effectType The type of sound effect. One of
* {@link #FX_KEY_CLICK},
* {@link #FX_FOCUS_NAVIGATION_UP},
* {@link #FX_FOCUS_NAVIGATION_DOWN},
* {@link #FX_FOCUS_NAVIGATION_LEFT},
* {@link #FX_FOCUS_NAVIGATION_RIGHT},
* {@link #FX_KEYPRESS_STANDARD},
* {@link #FX_KEYPRESS_SPACEBAR},
* {@link #FX_KEYPRESS_DELETE},
* {@link #FX_KEYPRESS_RETURN},
* {@link #FX_KEYPRESS_INVALID},
* NOTE: This version uses the UI settings to determine
* whether sounds are heard or not.
*/
public void playSoundEffect(int effectType) {
if (effectType < 0 || effectType >= NUM_SOUND_EFFECTS) {
return;
}
if (!querySoundEffectsEnabled(Process.myUserHandle().getIdentifier())) {
return;
}
IAudioService service = getService();
try {
service.playSoundEffect(effectType);
} catch (RemoteException e) {
Log.e(TAG, "Dead object in playSoundEffect"+e);
}
}
/**
* Plays a sound effect (Key clicks, lid open/close...)
* @param effectType The type of sound effect. One of
* {@link #FX_KEY_CLICK},
* {@link #FX_FOCUS_NAVIGATION_UP},
* {@link #FX_FOCUS_NAVIGATION_DOWN},
* {@link #FX_FOCUS_NAVIGATION_LEFT},
* {@link #FX_FOCUS_NAVIGATION_RIGHT},
* {@link #FX_KEYPRESS_STANDARD},
* {@link #FX_KEYPRESS_SPACEBAR},
* {@link #FX_KEYPRESS_DELETE},
* {@link #FX_KEYPRESS_RETURN},
* {@link #FX_KEYPRESS_INVALID},
* @param userId The current user to pull sound settings from
* NOTE: This version uses the UI settings to determine
* whether sounds are heard or not.
* @hide
*/
public void playSoundEffect(int effectType, int userId) {
if (effectType < 0 || effectType >= NUM_SOUND_EFFECTS) {
return;
}
if (!querySoundEffectsEnabled(userId)) {
return;
}
IAudioService service = getService();
try {
service.playSoundEffect(effectType);
} catch (RemoteException e) {
Log.e(TAG, "Dead object in playSoundEffect"+e);
}
}
/**
* Plays a sound effect (Key clicks, lid open/close...)
* @param effectType The type of sound effect. One of
* {@link #FX_KEY_CLICK},
* {@link #FX_FOCUS_NAVIGATION_UP},
* {@link #FX_FOCUS_NAVIGATION_DOWN},
* {@link #FX_FOCUS_NAVIGATION_LEFT},
* {@link #FX_FOCUS_NAVIGATION_RIGHT},
* {@link #FX_KEYPRESS_STANDARD},
* {@link #FX_KEYPRESS_SPACEBAR},
* {@link #FX_KEYPRESS_DELETE},
* {@link #FX_KEYPRESS_RETURN},
* {@link #FX_KEYPRESS_INVALID},
* @param volume Sound effect volume.
* The volume value is a raw scalar so UI controls should be scaled logarithmically.
* If a volume of -1 is specified, the AudioManager.STREAM_MUSIC stream volume minus 3dB will be used.
* NOTE: This version is for applications that have their own
* settings panel for enabling and controlling volume.
*/
public void playSoundEffect(int effectType, float volume) {
if (effectType < 0 || effectType >= NUM_SOUND_EFFECTS) {
return;
}
IAudioService service = getService();
try {
service.playSoundEffectVolume(effectType, volume);
} catch (RemoteException e) {
Log.e(TAG, "Dead object in playSoundEffect"+e);
}
}
/**
* Settings has an in memory cache, so this is fast.
*/
private boolean querySoundEffectsEnabled(int user) {
return Settings.System.getIntForUser(getContext().getContentResolver(),
Settings.System.SOUND_EFFECTS_ENABLED, 0, user) != 0;
}
/**
* Load Sound effects.
* This method must be called when sound effects are enabled.
*/
public void loadSoundEffects() {
IAudioService service = getService();
try {
service.loadSoundEffects();
} catch (RemoteException e) {
Log.e(TAG, "Dead object in loadSoundEffects"+e);
}
}
/**
* Unload Sound effects.
* This method can be called to free some memory when
* sound effects are disabled.
*/
public void unloadSoundEffects() {
IAudioService service = getService();
try {
service.unloadSoundEffects();
} catch (RemoteException e) {
Log.e(TAG, "Dead object in unloadSoundEffects"+e);
}
}
/**
* @hide
* Used to indicate no audio focus has been gained or lost.
*/
public static final int AUDIOFOCUS_NONE = 0;
/**
* Used to indicate a gain of audio focus, or a request of audio focus, of unknown duration.
* @see OnAudioFocusChangeListener#onAudioFocusChange(int)
* @see #requestAudioFocus(OnAudioFocusChangeListener, int, int)
*/
public static final int AUDIOFOCUS_GAIN = 1;
/**
* Used to indicate a temporary gain or request of audio focus, anticipated to last a short
* amount of time. Examples of temporary changes are the playback of driving directions, or an
* event notification.
* @see OnAudioFocusChangeListener#onAudioFocusChange(int)
* @see #requestAudioFocus(OnAudioFocusChangeListener, int, int)
*/
public static final int AUDIOFOCUS_GAIN_TRANSIENT = 2;
/**
* Used to indicate a temporary request of audio focus, anticipated to last a short
* amount of time, and where it is acceptable for other audio applications to keep playing
* after having lowered their output level (also referred to as "ducking").
* Examples of temporary changes are the playback of driving directions where playback of music
* in the background is acceptable.
* @see OnAudioFocusChangeListener#onAudioFocusChange(int)
* @see #requestAudioFocus(OnAudioFocusChangeListener, int, int)
*/
public static final int AUDIOFOCUS_GAIN_TRANSIENT_MAY_DUCK = 3;
/**
* Used to indicate a temporary request of audio focus, anticipated to last a short
* amount of time, during which no other applications, or system components, should play
* anything. Examples of exclusive and transient audio focus requests are voice
* memo recording and speech recognition, during which the system shouldn't play any
* notifications, and media playback should have paused.
* @see #requestAudioFocus(OnAudioFocusChangeListener, int, int)
*/
public static final int AUDIOFOCUS_GAIN_TRANSIENT_EXCLUSIVE = 4;
/**
* Used to indicate a loss of audio focus of unknown duration.
* @see OnAudioFocusChangeListener#onAudioFocusChange(int)
*/
public static final int AUDIOFOCUS_LOSS = -1 * AUDIOFOCUS_GAIN;
/**
* Used to indicate a transient loss of audio focus.
* @see OnAudioFocusChangeListener#onAudioFocusChange(int)
*/
public static final int AUDIOFOCUS_LOSS_TRANSIENT = -1 * AUDIOFOCUS_GAIN_TRANSIENT;
/**
* Used to indicate a transient loss of audio focus where the loser of the audio focus can
* lower its output volume if it wants to continue playing (also referred to as "ducking"), as
* the new focus owner doesn't require others to be silent.
* @see OnAudioFocusChangeListener#onAudioFocusChange(int)
*/
public static final int AUDIOFOCUS_LOSS_TRANSIENT_CAN_DUCK =
-1 * AUDIOFOCUS_GAIN_TRANSIENT_MAY_DUCK;
/**
* Interface definition for a callback to be invoked when the audio focus of the system is
* updated.
*/
public interface OnAudioFocusChangeListener {
/**
* Called on the listener to notify it the audio focus for this listener has been changed.
* The focusChange value indicates whether the focus was gained,
* whether the focus was lost, and whether that loss is transient, or whether the new focus
* holder will hold it for an unknown amount of time.
* When losing focus, listeners can use the focus change information to decide what
* behavior to adopt when losing focus. A music player could for instance elect to lower
* the volume of its music stream (duck) for transient focus losses, and pause otherwise.
* @param focusChange the type of focus change, one of {@link AudioManager#AUDIOFOCUS_GAIN},
* {@link AudioManager#AUDIOFOCUS_LOSS}, {@link AudioManager#AUDIOFOCUS_LOSS_TRANSIENT}
* and {@link AudioManager#AUDIOFOCUS_LOSS_TRANSIENT_CAN_DUCK}.
*/
public void onAudioFocusChange(int focusChange);
}
/**
* Map to convert focus event listener IDs, as used in the AudioService audio focus stack,
* to actual listener objects.
*/
private final HashMap mAudioFocusIdListenerMap =
new HashMap();
/**
* Lock to prevent concurrent changes to the list of focus listeners for this AudioManager
* instance.
*/
private final Object mFocusListenerLock = new Object();
private OnAudioFocusChangeListener findFocusListener(String id) {
return mAudioFocusIdListenerMap.get(id);
}
/**
* Handler for audio focus events coming from the audio service.
*/
private final FocusEventHandlerDelegate mAudioFocusEventHandlerDelegate =
new FocusEventHandlerDelegate();
/**
* Helper class to handle the forwarding of audio focus events to the appropriate listener
*/
private class FocusEventHandlerDelegate {
private final Handler mHandler;
FocusEventHandlerDelegate() {
Looper looper;
if ((looper = Looper.myLooper()) == null) {
looper = Looper.getMainLooper();
}
if (looper != null) {
// implement the event handler delegate to receive audio focus events
mHandler = new Handler(looper) {
@Override
public void handleMessage(Message msg) {
OnAudioFocusChangeListener listener = null;
synchronized(mFocusListenerLock) {
listener = findFocusListener((String)msg.obj);
}
if (listener != null) {
Log.d(TAG, "AudioManager dispatching onAudioFocusChange("
+ msg.what + ") for " + msg.obj);
listener.onAudioFocusChange(msg.what);
}
}
};
} else {
mHandler = null;
}
}
Handler getHandler() {
return mHandler;
}
}
private final IAudioFocusDispatcher mAudioFocusDispatcher = new IAudioFocusDispatcher.Stub() {
public void dispatchAudioFocusChange(int focusChange, String id) {
Message m = mAudioFocusEventHandlerDelegate.getHandler().obtainMessage(focusChange, id);
mAudioFocusEventHandlerDelegate.getHandler().sendMessage(m);
}
};
private String getIdForAudioFocusListener(OnAudioFocusChangeListener l) {
if (l == null) {
return new String(this.toString());
} else {
return new String(this.toString() + l.toString());
}
}
/**
* @hide
* Registers a listener to be called when audio focus changes. Calling this method is optional
* before calling {@link #requestAudioFocus(OnAudioFocusChangeListener, int, int)}, as it
* will register the listener as well if it wasn't registered already.
* @param l the listener to be notified of audio focus changes.
*/
public void registerAudioFocusListener(OnAudioFocusChangeListener l) {
synchronized(mFocusListenerLock) {
if (mAudioFocusIdListenerMap.containsKey(getIdForAudioFocusListener(l))) {
return;
}
mAudioFocusIdListenerMap.put(getIdForAudioFocusListener(l), l);
}
}
/**
* @hide
* Causes the specified listener to not be called anymore when focus is gained or lost.
* @param l the listener to unregister.
*/
public void unregisterAudioFocusListener(OnAudioFocusChangeListener l) {
// remove locally
synchronized(mFocusListenerLock) {
mAudioFocusIdListenerMap.remove(getIdForAudioFocusListener(l));
}
}
/**
* A failed focus change request.
*/
public static final int AUDIOFOCUS_REQUEST_FAILED = 0;
/**
* A successful focus change request.
*/
public static final int AUDIOFOCUS_REQUEST_GRANTED = 1;
/**
* @hide
* A focus change request whose granting is delayed: the request was successful, but the
* requester will only be granted audio focus once the condition that prevented immediate
* granting has ended.
* See {@link #requestAudioFocus(OnAudioFocusChangeListener, AudioAttributes, int, int)}
*/
public static final int AUDIOFOCUS_REQUEST_DELAYED = 2;
/**
* Request audio focus.
* Send a request to obtain the audio focus
* @param l the listener to be notified of audio focus changes
* @param streamType the main audio stream type affected by the focus request
* @param durationHint use {@link #AUDIOFOCUS_GAIN_TRANSIENT} to indicate this focus request
* is temporary, and focus will be abandonned shortly. Examples of transient requests are
* for the playback of driving directions, or notifications sounds.
* Use {@link #AUDIOFOCUS_GAIN_TRANSIENT_MAY_DUCK} to indicate also that it's ok for
* the previous focus owner to keep playing if it ducks its audio output.
* Alternatively use {@link #AUDIOFOCUS_GAIN_TRANSIENT_EXCLUSIVE} for a temporary request
* that benefits from the system not playing disruptive sounds like notifications, for
* usecases such as voice memo recording, or speech recognition.
* Use {@link #AUDIOFOCUS_GAIN} for a focus request of unknown duration such
* as the playback of a song or a video.
* @return {@link #AUDIOFOCUS_REQUEST_FAILED} or {@link #AUDIOFOCUS_REQUEST_GRANTED}
*/
public int requestAudioFocus(OnAudioFocusChangeListener l, int streamType, int durationHint) {
int status = AUDIOFOCUS_REQUEST_FAILED;
try {
// status is guaranteed to be either AUDIOFOCUS_REQUEST_FAILED or
// AUDIOFOCUS_REQUEST_GRANTED as focus is requested without the
// AUDIOFOCUS_FLAG_DELAY_OK flag
status = requestAudioFocus(l,
new AudioAttributes.Builder()
.setInternalLegacyStreamType(streamType).build(),
durationHint,
0 /* flags, legacy behavior */);
} catch (IllegalArgumentException e) {
Log.e(TAG, "Audio focus request denied due to ", e);
}
return status;
}
// when adding new flags, add them to the relevant AUDIOFOCUS_FLAGS_APPS or SYSTEM masks
/**
* @hide
* Use this flag when requesting audio focus to indicate it is ok for the requester to not be
* granted audio focus immediately (as indicated by {@link #AUDIOFOCUS_REQUEST_DELAYED}) when
* the system is in a state where focus cannot change, but be granted focus later when
* this condition ends.
*/
@SystemApi
public static final int AUDIOFOCUS_FLAG_DELAY_OK = 0x1 << 0;
/**
* @hide
* Use this flag when requesting audio focus to indicate that the requester
* will pause its media playback (if applicable) when losing audio focus with
* {@link #AUDIOFOCUS_LOSS_TRANSIENT_CAN_DUCK}, rather than ducking.
*
On some platforms, the ducking may be handled without the application being aware of it
* (i.e. it will not transiently lose focus). For applications that for instance play spoken
* content, such as audio book or podcast players, ducking may never be acceptable, and will
* thus always pause. This flag enables them to be declared as such whenever they request focus.
*/
@SystemApi
public static final int AUDIOFOCUS_FLAG_PAUSES_ON_DUCKABLE_LOSS = 0x1 << 1;
/**
* @hide
* Use this flag to lock audio focus so granting is temporarily disabled.
*
This flag can only be used by owners of a registered
* {@link android.media.audiopolicy.AudioPolicy} in
* {@link #requestAudioFocus(OnAudioFocusChangeListener, AudioAttributes, int, int, AudioPolicy)}
*/
@SystemApi
public static final int AUDIOFOCUS_FLAG_LOCK = 0x1 << 2;
/** @hide */
public static final int AUDIOFOCUS_FLAGS_APPS = AUDIOFOCUS_FLAG_DELAY_OK
| AUDIOFOCUS_FLAG_PAUSES_ON_DUCKABLE_LOSS;
/** @hide */
public static final int AUDIOFOCUS_FLAGS_SYSTEM = AUDIOFOCUS_FLAG_DELAY_OK
| AUDIOFOCUS_FLAG_PAUSES_ON_DUCKABLE_LOSS | AUDIOFOCUS_FLAG_LOCK;
/**
* @hide
* Request audio focus.
* Send a request to obtain the audio focus. This method differs from
* {@link #requestAudioFocus(OnAudioFocusChangeListener, int, int)} in that it can express
* that the requester accepts delayed grants of audio focus.
* @param l the listener to be notified of audio focus changes. It is not allowed to be null
* when the request is flagged with {@link #AUDIOFOCUS_FLAG_DELAY_OK}.
* @param requestAttributes non null {@link AudioAttributes} describing the main reason for
* requesting audio focus.
* @param durationHint use {@link #AUDIOFOCUS_GAIN_TRANSIENT} to indicate this focus request
* is temporary, and focus will be abandonned shortly. Examples of transient requests are
* for the playback of driving directions, or notifications sounds.
* Use {@link #AUDIOFOCUS_GAIN_TRANSIENT_MAY_DUCK} to indicate also that it's ok for
* the previous focus owner to keep playing if it ducks its audio output.
* Alternatively use {@link #AUDIOFOCUS_GAIN_TRANSIENT_EXCLUSIVE} for a temporary request
* that benefits from the system not playing disruptive sounds like notifications, for
* usecases such as voice memo recording, or speech recognition.
* Use {@link #AUDIOFOCUS_GAIN} for a focus request of unknown duration such
* as the playback of a song or a video.
* @param flags 0 or a combination of {link #AUDIOFOCUS_FLAG_DELAY_OK}
* and {@link #AUDIOFOCUS_FLAG_PAUSES_ON_DUCKABLE_LOSS}.
*
Use 0 when not using any flags for the request, which behaves like
* {@link #requestAudioFocus(OnAudioFocusChangeListener, int, int)}, where either audio
* focus is granted immediately, or the grant request fails because the system is in a
* state where focus cannot change (e.g. a phone call).
* @return {@link #AUDIOFOCUS_REQUEST_FAILED}, {@link #AUDIOFOCUS_REQUEST_GRANTED}
* or {@link #AUDIOFOCUS_REQUEST_DELAYED}.
* The return value is never {@link #AUDIOFOCUS_REQUEST_DELAYED} when focus is requested
* without the {@link #AUDIOFOCUS_FLAG_DELAY_OK} flag.
* @throws IllegalArgumentException
*/
@SystemApi
public int requestAudioFocus(OnAudioFocusChangeListener l,
@NonNull AudioAttributes requestAttributes,
int durationHint,
int flags) throws IllegalArgumentException {
if (flags != (flags & AUDIOFOCUS_FLAGS_APPS)) {
throw new IllegalArgumentException("Invalid flags 0x"
+ Integer.toHexString(flags).toUpperCase());
}
return requestAudioFocus(l, requestAttributes, durationHint,
flags & AUDIOFOCUS_FLAGS_APPS,
null /* no AudioPolicy*/);
}
/**
* @hide
* Request or lock audio focus.
* This method is to be used by system components that have registered an
* {@link android.media.audiopolicy.AudioPolicy} to request audio focus, but also to "lock" it
* so focus granting is temporarily disabled.
* @param l see the description of the same parameter in
* {@link #requestAudioFocus(OnAudioFocusChangeListener, AudioAttributes, int, int)}
* @param requestAttributes non null {@link AudioAttributes} describing the main reason for
* requesting audio focus.
* @param durationHint see the description of the same parameter in
* {@link #requestAudioFocus(OnAudioFocusChangeListener, AudioAttributes, int, int)}
* @param flags 0 or a combination of {link #AUDIOFOCUS_FLAG_DELAY_OK},
* {@link #AUDIOFOCUS_FLAG_PAUSES_ON_DUCKABLE_LOSS}, and {@link #AUDIOFOCUS_FLAG_LOCK}.
*
Use 0 when not using any flags for the request, which behaves like
* {@link #requestAudioFocus(OnAudioFocusChangeListener, int, int)}, where either audio
* focus is granted immediately, or the grant request fails because the system is in a
* state where focus cannot change (e.g. a phone call).
* @param ap a registered {@link android.media.audiopolicy.AudioPolicy} instance when locking
* focus, or null.
* @return see the description of the same return value in
* {@link #requestAudioFocus(OnAudioFocusChangeListener, AudioAttributes, int, int)}
* @throws IllegalArgumentException
*/
@SystemApi
public int requestAudioFocus(OnAudioFocusChangeListener l,
@NonNull AudioAttributes requestAttributes,
int durationHint,
int flags,
AudioPolicy ap) throws IllegalArgumentException {
// parameter checking
if (requestAttributes == null) {
throw new IllegalArgumentException("Illegal null AudioAttributes argument");
}
if ((durationHint < AUDIOFOCUS_GAIN) ||
(durationHint > AUDIOFOCUS_GAIN_TRANSIENT_EXCLUSIVE)) {
throw new IllegalArgumentException("Invalid duration hint");
}
if (flags != (flags & AUDIOFOCUS_FLAGS_SYSTEM)) {
throw new IllegalArgumentException("Illegal flags 0x"
+ Integer.toHexString(flags).toUpperCase());
}
if (((flags & AUDIOFOCUS_FLAG_DELAY_OK) == AUDIOFOCUS_FLAG_DELAY_OK) && (l == null)) {
throw new IllegalArgumentException(
"Illegal null focus listener when flagged as accepting delayed focus grant");
}
if (((flags & AUDIOFOCUS_FLAG_LOCK) == AUDIOFOCUS_FLAG_LOCK) && (ap == null)) {
throw new IllegalArgumentException(
"Illegal null audio policy when locking audio focus");
}
int status = AUDIOFOCUS_REQUEST_FAILED;
registerAudioFocusListener(l);
IAudioService service = getService();
try {
status = service.requestAudioFocus(requestAttributes, durationHint, mICallBack,
mAudioFocusDispatcher, getIdForAudioFocusListener(l),
getContext().getOpPackageName() /* package name */, flags,
ap != null ? ap.cb() : null);
} catch (RemoteException e) {
Log.e(TAG, "Can't call requestAudioFocus() on AudioService:", e);
}
return status;
}
/**
* @hide
* Used internally by telephony package to request audio focus. Will cause the focus request
* to be associated with the "voice communication" identifier only used in AudioService
* to identify this use case.
* @param streamType use STREAM_RING for focus requests when ringing, VOICE_CALL for
* the establishment of the call
* @param durationHint the type of focus request. AUDIOFOCUS_GAIN_TRANSIENT is recommended so
* media applications resume after a call
*/
public void requestAudioFocusForCall(int streamType, int durationHint) {
IAudioService service = getService();
try {
service.requestAudioFocus(new AudioAttributes.Builder()
.setInternalLegacyStreamType(streamType).build(),
durationHint, mICallBack, null,
AudioSystem.IN_VOICE_COMM_FOCUS_ID,
getContext().getOpPackageName(),
AUDIOFOCUS_FLAG_LOCK,
null /* policy token */);
} catch (RemoteException e) {
Log.e(TAG, "Can't call requestAudioFocusForCall() on AudioService:", e);
}
}
/**
* @hide
* Used internally by telephony package to abandon audio focus, typically after a call or
* when ringing ends and the call is rejected or not answered.
* Should match one or more calls to {@link #requestAudioFocusForCall(int, int)}.
*/
public void abandonAudioFocusForCall() {
IAudioService service = getService();
try {
service.abandonAudioFocus(null, AudioSystem.IN_VOICE_COMM_FOCUS_ID,
null /*AudioAttributes, legacy behavior*/);
} catch (RemoteException e) {
Log.e(TAG, "Can't call abandonAudioFocusForCall() on AudioService:", e);
}
}
/**
* Abandon audio focus. Causes the previous focus owner, if any, to receive focus.
* @param l the listener with which focus was requested.
* @return {@link #AUDIOFOCUS_REQUEST_FAILED} or {@link #AUDIOFOCUS_REQUEST_GRANTED}
*/
public int abandonAudioFocus(OnAudioFocusChangeListener l) {
return abandonAudioFocus(l, null /*AudioAttributes, legacy behavior*/);
}
/**
* @hide
* Abandon audio focus. Causes the previous focus owner, if any, to receive focus.
* @param l the listener with which focus was requested.
* @param aa the {@link AudioAttributes} with which audio focus was requested
* @return {@link #AUDIOFOCUS_REQUEST_FAILED} or {@link #AUDIOFOCUS_REQUEST_GRANTED}
*/
@SystemApi
public int abandonAudioFocus(OnAudioFocusChangeListener l, AudioAttributes aa) {
int status = AUDIOFOCUS_REQUEST_FAILED;
unregisterAudioFocusListener(l);
IAudioService service = getService();
try {
status = service.abandonAudioFocus(mAudioFocusDispatcher,
getIdForAudioFocusListener(l), aa);
} catch (RemoteException e) {
Log.e(TAG, "Can't call abandonAudioFocus() on AudioService:", e);
}
return status;
}
//====================================================================
// Remote Control
/**
* Register a component to be the sole receiver of MEDIA_BUTTON intents.
* @param eventReceiver identifier of a {@link android.content.BroadcastReceiver}
* that will receive the media button intent. This broadcast receiver must be declared
* in the application manifest. The package of the component must match that of
* the context you're registering from.
* @deprecated Use {@link MediaSession#setMediaButtonReceiver(PendingIntent)} instead.
*/
@Deprecated
public void registerMediaButtonEventReceiver(ComponentName eventReceiver) {
if (eventReceiver == null) {
return;
}
if (!eventReceiver.getPackageName().equals(getContext().getPackageName())) {
Log.e(TAG, "registerMediaButtonEventReceiver() error: " +
"receiver and context package names don't match");
return;
}
// construct a PendingIntent for the media button and register it
Intent mediaButtonIntent = new Intent(Intent.ACTION_MEDIA_BUTTON);
// the associated intent will be handled by the component being registered
mediaButtonIntent.setComponent(eventReceiver);
PendingIntent pi = PendingIntent.getBroadcast(getContext(),
0/*requestCode, ignored*/, mediaButtonIntent, 0/*flags*/);
registerMediaButtonIntent(pi, eventReceiver);
}
/**
* Register a component to be the sole receiver of MEDIA_BUTTON intents. This is like
* {@link #registerMediaButtonEventReceiver(android.content.ComponentName)}, but allows
* the buttons to go to any PendingIntent. Note that you should only use this form if
* you know you will continue running for the full time until unregistering the
* PendingIntent.
* @param eventReceiver target that will receive media button intents. The PendingIntent
* will be sent an {@link Intent#ACTION_MEDIA_BUTTON} event when a media button action
* occurs, with {@link Intent#EXTRA_KEY_EVENT} added and holding the key code of the
* media button that was pressed.
* @deprecated Use {@link MediaSession#setMediaButtonReceiver(PendingIntent)} instead.
*/
@Deprecated
public void registerMediaButtonEventReceiver(PendingIntent eventReceiver) {
if (eventReceiver == null) {
return;
}
registerMediaButtonIntent(eventReceiver, null);
}
/**
* @hide
* no-op if (pi == null) or (eventReceiver == null)
*/
public void registerMediaButtonIntent(PendingIntent pi, ComponentName eventReceiver) {
if (pi == null) {
Log.e(TAG, "Cannot call registerMediaButtonIntent() with a null parameter");
return;
}
MediaSessionLegacyHelper helper = MediaSessionLegacyHelper.getHelper(getContext());
helper.addMediaButtonListener(pi, eventReceiver, getContext());
}
/**
* Unregister the receiver of MEDIA_BUTTON intents.
* @param eventReceiver identifier of a {@link android.content.BroadcastReceiver}
* that was registered with {@link #registerMediaButtonEventReceiver(ComponentName)}.
* @deprecated Use {@link MediaSession} instead.
*/
@Deprecated
public void unregisterMediaButtonEventReceiver(ComponentName eventReceiver) {
if (eventReceiver == null) {
return;
}
// construct a PendingIntent for the media button and unregister it
Intent mediaButtonIntent = new Intent(Intent.ACTION_MEDIA_BUTTON);
// the associated intent will be handled by the component being registered
mediaButtonIntent.setComponent(eventReceiver);
PendingIntent pi = PendingIntent.getBroadcast(getContext(),
0/*requestCode, ignored*/, mediaButtonIntent, 0/*flags*/);
unregisterMediaButtonIntent(pi);
}
/**
* Unregister the receiver of MEDIA_BUTTON intents.
* @param eventReceiver same PendingIntent that was registed with
* {@link #registerMediaButtonEventReceiver(PendingIntent)}.
* @deprecated Use {@link MediaSession} instead.
*/
@Deprecated
public void unregisterMediaButtonEventReceiver(PendingIntent eventReceiver) {
if (eventReceiver == null) {
return;
}
unregisterMediaButtonIntent(eventReceiver);
}
/**
* @hide
*/
public void unregisterMediaButtonIntent(PendingIntent pi) {
MediaSessionLegacyHelper helper = MediaSessionLegacyHelper.getHelper(getContext());
helper.removeMediaButtonListener(pi);
}
/**
* Registers the remote control client for providing information to display on the remote
* controls.
* @param rcClient The remote control client from which remote controls will receive
* information to display.
* @see RemoteControlClient
* @deprecated Use {@link MediaSession} instead.
*/
@Deprecated
public void registerRemoteControlClient(RemoteControlClient rcClient) {
if ((rcClient == null) || (rcClient.getRcMediaIntent() == null)) {
return;
}
rcClient.registerWithSession(MediaSessionLegacyHelper.getHelper(getContext()));
}
/**
* Unregisters the remote control client that was providing information to display on the
* remote controls.
* @param rcClient The remote control client to unregister.
* @see #registerRemoteControlClient(RemoteControlClient)
* @deprecated Use {@link MediaSession} instead.
*/
@Deprecated
public void unregisterRemoteControlClient(RemoteControlClient rcClient) {
if ((rcClient == null) || (rcClient.getRcMediaIntent() == null)) {
return;
}
rcClient.unregisterWithSession(MediaSessionLegacyHelper.getHelper(getContext()));
}
/**
* Registers a {@link RemoteController} instance for it to receive media
* metadata updates and playback state information from applications using
* {@link RemoteControlClient}, and control their playback.
*
* Registration requires the {@link RemoteController.OnClientUpdateListener} listener to be
* one of the enabled notification listeners (see
* {@link android.service.notification.NotificationListenerService}).
*
* @param rctlr the object to register.
* @return true if the {@link RemoteController} was successfully registered,
* false if an error occurred, due to an internal system error, or
* insufficient permissions.
* @deprecated Use
* {@link MediaSessionManager#addOnActiveSessionsChangedListener(android.media.session.MediaSessionManager.OnActiveSessionsChangedListener, ComponentName)}
* and {@link MediaController} instead.
*/
@Deprecated
public boolean registerRemoteController(RemoteController rctlr) {
if (rctlr == null) {
return false;
}
rctlr.startListeningToSessions();
return true;
}
/**
* Unregisters a {@link RemoteController}, causing it to no longer receive
* media metadata and playback state information, and no longer be capable
* of controlling playback.
*
* @param rctlr the object to unregister.
* @deprecated Use
* {@link MediaSessionManager#removeOnActiveSessionsChangedListener(android.media.session.MediaSessionManager.OnActiveSessionsChangedListener)}
* instead.
*/
@Deprecated
public void unregisterRemoteController(RemoteController rctlr) {
if (rctlr == null) {
return;
}
rctlr.stopListeningToSessions();
}
/**
* @hide
* Registers a remote control display that will be sent information by remote control clients.
* Use this method if your IRemoteControlDisplay is not going to display artwork, otherwise
* use {@link #registerRemoteControlDisplay(IRemoteControlDisplay, int, int)} to pass the
* artwork size directly, or
* {@link #remoteControlDisplayUsesBitmapSize(IRemoteControlDisplay, int, int)} later if artwork
* is not yet needed.
*
Registration requires the {@link Manifest.permission#MEDIA_CONTENT_CONTROL} permission.
* @param rcd the IRemoteControlDisplay
*/
public void registerRemoteControlDisplay(IRemoteControlDisplay rcd) {
// passing a negative value for art work width and height as they are unknown at this stage
registerRemoteControlDisplay(rcd, /*w*/-1, /*h*/ -1);
}
/**
* @hide
* Registers a remote control display that will be sent information by remote control clients.
*
Registration requires the {@link Manifest.permission#MEDIA_CONTENT_CONTROL} permission.
* @param rcd
* @param w the maximum width of the expected bitmap. Negative values indicate it is
* useless to send artwork.
* @param h the maximum height of the expected bitmap. Negative values indicate it is
* useless to send artwork.
*/
public void registerRemoteControlDisplay(IRemoteControlDisplay rcd, int w, int h) {
if (rcd == null) {
return;
}
IAudioService service = getService();
try {
service.registerRemoteControlDisplay(rcd, w, h);
} catch (RemoteException e) {
Log.e(TAG, "Dead object in registerRemoteControlDisplay " + e);
}
}
/**
* @hide
* Unregisters a remote control display that was sent information by remote control clients.
* @param rcd
*/
public void unregisterRemoteControlDisplay(IRemoteControlDisplay rcd) {
if (rcd == null) {
return;
}
IAudioService service = getService();
try {
service.unregisterRemoteControlDisplay(rcd);
} catch (RemoteException e) {
Log.e(TAG, "Dead object in unregisterRemoteControlDisplay " + e);
}
}
/**
* @hide
* Sets the artwork size a remote control display expects when receiving bitmaps.
* @param rcd
* @param w the maximum width of the expected bitmap. Negative values indicate it is
* useless to send artwork.
* @param h the maximum height of the expected bitmap. Negative values indicate it is
* useless to send artwork.
*/
public void remoteControlDisplayUsesBitmapSize(IRemoteControlDisplay rcd, int w, int h) {
if (rcd == null) {
return;
}
IAudioService service = getService();
try {
service.remoteControlDisplayUsesBitmapSize(rcd, w, h);
} catch (RemoteException e) {
Log.e(TAG, "Dead object in remoteControlDisplayUsesBitmapSize " + e);
}
}
/**
* @hide
* Controls whether a remote control display needs periodic checks of the RemoteControlClient
* playback position to verify that the estimated position has not drifted from the actual
* position. By default the check is not performed.
* The IRemoteControlDisplay must have been previously registered for this to have any effect.
* @param rcd the IRemoteControlDisplay for which the anti-drift mechanism will be enabled
* or disabled. No effect is null.
* @param wantsSync if true, RemoteControlClient instances which expose their playback position
* to the framework will regularly compare the estimated playback position with the actual
* position, and will update the IRemoteControlDisplay implementation whenever a drift is
* detected.
*/
public void remoteControlDisplayWantsPlaybackPositionSync(IRemoteControlDisplay rcd,
boolean wantsSync) {
if (rcd == null) {
return;
}
IAudioService service = getService();
try {
service.remoteControlDisplayWantsPlaybackPositionSync(rcd, wantsSync);
} catch (RemoteException e) {
Log.e(TAG, "Dead object in remoteControlDisplayWantsPlaybackPositionSync " + e);
}
}
/**
* @hide
* Register the given {@link AudioPolicy}.
* This call is synchronous and blocks until the registration process successfully completed
* or failed to complete.
* @param policy the non-null {@link AudioPolicy} to register.
* @return {@link #ERROR} if there was an error communicating with the registration service
* or if the user doesn't have the required
* {@link android.Manifest.permission#MODIFY_AUDIO_ROUTING} permission,
* {@link #SUCCESS} otherwise.
*/
@SystemApi
public int registerAudioPolicy(@NonNull AudioPolicy policy) {
if (policy == null) {
throw new IllegalArgumentException("Illegal null AudioPolicy argument");
}
IAudioService service = getService();
try {
String regId = service.registerAudioPolicy(policy.getConfig(), policy.cb(),
policy.hasFocusListener());
if (regId == null) {
return ERROR;
} else {
policy.setRegistration(regId);
}
// successful registration
} catch (RemoteException e) {
Log.e(TAG, "Dead object in registerAudioPolicyAsync()", e);
return ERROR;
}
return SUCCESS;
}
/**
* @hide
* @param policy the non-null {@link AudioPolicy} to unregister.
*/
@SystemApi
public void unregisterAudioPolicyAsync(@NonNull AudioPolicy policy) {
if (policy == null) {
throw new IllegalArgumentException("Illegal null AudioPolicy argument");
}
IAudioService service = getService();
try {
service.unregisterAudioPolicyAsync(policy.cb());
policy.setRegistration(null);
} catch (RemoteException e) {
Log.e(TAG, "Dead object in unregisterAudioPolicyAsync()", e);
}
}
/**
* @hide
* Reload audio settings. This method is called by Settings backup
* agent when audio settings are restored and causes the AudioService
* to read and apply restored settings.
*/
public void reloadAudioSettings() {
IAudioService service = getService();
try {
service.reloadAudioSettings();
} catch (RemoteException e) {
Log.e(TAG, "Dead object in reloadAudioSettings"+e);
}
}
/**
* @hide
* Notifies AudioService that it is connected to an A2DP device that supports absolute volume,
* so that AudioService can send volume change events to the A2DP device, rather than handling
* them.
*/
public void avrcpSupportsAbsoluteVolume(String address, boolean support) {
IAudioService service = getService();
try {
service.avrcpSupportsAbsoluteVolume(address, support);
} catch (RemoteException e) {
Log.e(TAG, "Dead object in avrcpSupportsAbsoluteVolume", e);
}
}
/**
* {@hide}
*/
private final IBinder mICallBack = new Binder();
/**
* Checks whether the phone is in silent mode, with or without vibrate.
*
* @return true if phone is in silent mode, with or without vibrate.
*
* @see #getRingerMode()
*
* @hide pending API Council approval
*/
public boolean isSilentMode() {
int ringerMode = getRingerMode();
boolean silentMode =
(ringerMode == RINGER_MODE_SILENT) ||
(ringerMode == RINGER_MODE_VIBRATE);
return silentMode;
}
// This section re-defines new output device constants from AudioSystem, because the AudioSystem
// class is not used by other parts of the framework, which instead use definitions and methods
// from AudioManager. AudioSystem is an internal class used by AudioManager and AudioService.
/** @hide
* The audio device code for representing "no device." */
public static final int DEVICE_NONE = AudioSystem.DEVICE_NONE;
/** @hide
* The audio output device code for the small speaker at the front of the device used
* when placing calls. Does not refer to an in-ear headphone without attached microphone,
* such as earbuds, earphones, or in-ear monitors (IEM). Those would be handled as a
* {@link #DEVICE_OUT_WIRED_HEADPHONE}.
*/
public static final int DEVICE_OUT_EARPIECE = AudioSystem.DEVICE_OUT_EARPIECE;
/** @hide
* The audio output device code for the built-in speaker */
public static final int DEVICE_OUT_SPEAKER = AudioSystem.DEVICE_OUT_SPEAKER;
/** @hide
* The audio output device code for a wired headset with attached microphone */
public static final int DEVICE_OUT_WIRED_HEADSET = AudioSystem.DEVICE_OUT_WIRED_HEADSET;
/** @hide
* The audio output device code for a wired headphone without attached microphone */
public static final int DEVICE_OUT_WIRED_HEADPHONE = AudioSystem.DEVICE_OUT_WIRED_HEADPHONE;
/** @hide
* The audio output device code for generic Bluetooth SCO, for voice */
public static final int DEVICE_OUT_BLUETOOTH_SCO = AudioSystem.DEVICE_OUT_BLUETOOTH_SCO;
/** @hide
* The audio output device code for Bluetooth SCO Headset Profile (HSP) and
* Hands-Free Profile (HFP), for voice
*/
public static final int DEVICE_OUT_BLUETOOTH_SCO_HEADSET =
AudioSystem.DEVICE_OUT_BLUETOOTH_SCO_HEADSET;
/** @hide
* The audio output device code for Bluetooth SCO car audio, for voice */
public static final int DEVICE_OUT_BLUETOOTH_SCO_CARKIT =
AudioSystem.DEVICE_OUT_BLUETOOTH_SCO_CARKIT;
/** @hide
* The audio output device code for generic Bluetooth A2DP, for music */
public static final int DEVICE_OUT_BLUETOOTH_A2DP = AudioSystem.DEVICE_OUT_BLUETOOTH_A2DP;
/** @hide
* The audio output device code for Bluetooth A2DP headphones, for music */
public static final int DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES =
AudioSystem.DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES;
/** @hide
* The audio output device code for Bluetooth A2DP external speaker, for music */
public static final int DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER =
AudioSystem.DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER;
/** @hide
* The audio output device code for S/PDIF (legacy) or HDMI
* Deprecated: replaced by {@link #DEVICE_OUT_HDMI} */
public static final int DEVICE_OUT_AUX_DIGITAL = AudioSystem.DEVICE_OUT_AUX_DIGITAL;
/** @hide
* The audio output device code for HDMI */
public static final int DEVICE_OUT_HDMI = AudioSystem.DEVICE_OUT_HDMI;
/** @hide
* The audio output device code for an analog wired headset attached via a
* docking station
*/
public static final int DEVICE_OUT_ANLG_DOCK_HEADSET = AudioSystem.DEVICE_OUT_ANLG_DOCK_HEADSET;
/** @hide
* The audio output device code for a digital wired headset attached via a
* docking station
*/
public static final int DEVICE_OUT_DGTL_DOCK_HEADSET = AudioSystem.DEVICE_OUT_DGTL_DOCK_HEADSET;
/** @hide
* The audio output device code for a USB audio accessory. The accessory is in USB host
* mode and the Android device in USB device mode
*/
public static final int DEVICE_OUT_USB_ACCESSORY = AudioSystem.DEVICE_OUT_USB_ACCESSORY;
/** @hide
* The audio output device code for a USB audio device. The device is in USB device
* mode and the Android device in USB host mode
*/
public static final int DEVICE_OUT_USB_DEVICE = AudioSystem.DEVICE_OUT_USB_DEVICE;
/** @hide
* The audio output device code for projection output.
*/
public static final int DEVICE_OUT_REMOTE_SUBMIX = AudioSystem.DEVICE_OUT_REMOTE_SUBMIX;
/** @hide
* The audio output device code the telephony voice TX path.
*/
public static final int DEVICE_OUT_TELEPHONY_TX = AudioSystem.DEVICE_OUT_TELEPHONY_TX;
/** @hide
* The audio output device code for an analog jack with line impedance detected.
*/
public static final int DEVICE_OUT_LINE = AudioSystem.DEVICE_OUT_LINE;
/** @hide
* The audio output device code for HDMI Audio Return Channel.
*/
public static final int DEVICE_OUT_HDMI_ARC = AudioSystem.DEVICE_OUT_HDMI_ARC;
/** @hide
* The audio output device code for S/PDIF digital connection.
*/
public static final int DEVICE_OUT_SPDIF = AudioSystem.DEVICE_OUT_SPDIF;
/** @hide
* The audio output device code for built-in FM transmitter.
*/
public static final int DEVICE_OUT_FM = AudioSystem.DEVICE_OUT_FM;
/** @hide
* This is not used as a returned value from {@link #getDevicesForStream}, but could be
* used in the future in a set method to select whatever default device is chosen by the
* platform-specific implementation.
*/
public static final int DEVICE_OUT_DEFAULT = AudioSystem.DEVICE_OUT_DEFAULT;
/** @hide
* The audio input device code for default built-in microphone
*/
public static final int DEVICE_IN_BUILTIN_MIC = AudioSystem.DEVICE_IN_BUILTIN_MIC;
/** @hide
* The audio input device code for a Bluetooth SCO headset
*/
public static final int DEVICE_IN_BLUETOOTH_SCO_HEADSET =
AudioSystem.DEVICE_IN_BLUETOOTH_SCO_HEADSET;
/** @hide
* The audio input device code for wired headset microphone
*/
public static final int DEVICE_IN_WIRED_HEADSET =
AudioSystem.DEVICE_IN_WIRED_HEADSET;
/** @hide
* The audio input device code for HDMI
*/
public static final int DEVICE_IN_HDMI =
AudioSystem.DEVICE_IN_HDMI;
/** @hide
* The audio input device code for telephony voice RX path
*/
public static final int DEVICE_IN_TELEPHONY_RX =
AudioSystem.DEVICE_IN_TELEPHONY_RX;
/** @hide
* The audio input device code for built-in microphone pointing to the back
*/
public static final int DEVICE_IN_BACK_MIC =
AudioSystem.DEVICE_IN_BACK_MIC;
/** @hide
* The audio input device code for analog from a docking station
*/
public static final int DEVICE_IN_ANLG_DOCK_HEADSET =
AudioSystem.DEVICE_IN_ANLG_DOCK_HEADSET;
/** @hide
* The audio input device code for digital from a docking station
*/
public static final int DEVICE_IN_DGTL_DOCK_HEADSET =
AudioSystem.DEVICE_IN_DGTL_DOCK_HEADSET;
/** @hide
* The audio input device code for a USB audio accessory. The accessory is in USB host
* mode and the Android device in USB device mode
*/
public static final int DEVICE_IN_USB_ACCESSORY =
AudioSystem.DEVICE_IN_USB_ACCESSORY;
/** @hide
* The audio input device code for a USB audio device. The device is in USB device
* mode and the Android device in USB host mode
*/
public static final int DEVICE_IN_USB_DEVICE =
AudioSystem.DEVICE_IN_USB_DEVICE;
/** @hide
* The audio input device code for a FM radio tuner
*/
public static final int DEVICE_IN_FM_TUNER = AudioSystem.DEVICE_IN_FM_TUNER;
/** @hide
* The audio input device code for a TV tuner
*/
public static final int DEVICE_IN_TV_TUNER = AudioSystem.DEVICE_IN_TV_TUNER;
/** @hide
* The audio input device code for an analog jack with line impedance detected
*/
public static final int DEVICE_IN_LINE = AudioSystem.DEVICE_IN_LINE;
/** @hide
* The audio input device code for a S/PDIF digital connection
*/
public static final int DEVICE_IN_SPDIF = AudioSystem.DEVICE_IN_SPDIF;
/** @hide
* The audio input device code for audio loopback
*/
public static final int DEVICE_IN_LOOPBACK = AudioSystem.DEVICE_IN_LOOPBACK;
/**
* Return true if the device code corresponds to an output device.
* @hide
*/
public static boolean isOutputDevice(int device)
{
return (device & AudioSystem.DEVICE_BIT_IN) == 0;
}
/**
* Return true if the device code corresponds to an input device.
* @hide
*/
public static boolean isInputDevice(int device)
{
return (device & AudioSystem.DEVICE_BIT_IN) == AudioSystem.DEVICE_BIT_IN;
}
/**
* Return the enabled devices for the specified output stream type.
*
* @param streamType The stream type to query. One of
* {@link #STREAM_VOICE_CALL},
* {@link #STREAM_SYSTEM},
* {@link #STREAM_RING},
* {@link #STREAM_MUSIC},
* {@link #STREAM_ALARM},
* {@link #STREAM_NOTIFICATION},
* {@link #STREAM_DTMF}.
*
* @return The bit-mask "or" of audio output device codes for all enabled devices on this
* stream. Zero or more of
* {@link #DEVICE_OUT_EARPIECE},
* {@link #DEVICE_OUT_SPEAKER},
* {@link #DEVICE_OUT_WIRED_HEADSET},
* {@link #DEVICE_OUT_WIRED_HEADPHONE},
* {@link #DEVICE_OUT_BLUETOOTH_SCO},
* {@link #DEVICE_OUT_BLUETOOTH_SCO_HEADSET},
* {@link #DEVICE_OUT_BLUETOOTH_SCO_CARKIT},
* {@link #DEVICE_OUT_BLUETOOTH_A2DP},
* {@link #DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES},
* {@link #DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER},
* {@link #DEVICE_OUT_HDMI},
* {@link #DEVICE_OUT_ANLG_DOCK_HEADSET},
* {@link #DEVICE_OUT_DGTL_DOCK_HEADSET}.
* {@link #DEVICE_OUT_USB_ACCESSORY}.
* {@link #DEVICE_OUT_USB_DEVICE}.
* {@link #DEVICE_OUT_REMOTE_SUBMIX}.
* {@link #DEVICE_OUT_TELEPHONY_TX}.
* {@link #DEVICE_OUT_LINE}.
* {@link #DEVICE_OUT_HDMI_ARC}.
* {@link #DEVICE_OUT_SPDIF}.
* {@link #DEVICE_OUT_FM}.
* {@link #DEVICE_OUT_DEFAULT} is not used here.
*
* The implementation may support additional device codes beyond those listed, so
* the application should ignore any bits which it does not recognize.
* Note that the information may be imprecise when the implementation
* cannot distinguish whether a particular device is enabled.
*
* {@hide}
*/
public int getDevicesForStream(int streamType) {
switch (streamType) {
case STREAM_VOICE_CALL:
case STREAM_SYSTEM:
case STREAM_RING:
case STREAM_MUSIC:
case STREAM_ALARM:
case STREAM_NOTIFICATION:
case STREAM_DTMF:
return AudioSystem.getDevicesForStream(streamType);
default:
return 0;
}
}
/**
* Indicate wired accessory connection state change.
* @param device type of device connected/disconnected (AudioManager.DEVICE_OUT_xxx)
* @param state new connection state: 1 connected, 0 disconnected
* @param name device name
* {@hide}
*/
public void setWiredDeviceConnectionState(int type, int state, String address, String name) {
IAudioService service = getService();
try {
service.setWiredDeviceConnectionState(type, state, address, name,
mApplicationContext.getOpPackageName());
} catch (RemoteException e) {
Log.e(TAG, "Dead object in setWiredDeviceConnectionState "+e);
}
}
/**
* Indicate A2DP source or sink connection state change.
* @param device Bluetooth device connected/disconnected
* @param state new connection state (BluetoothProfile.STATE_xxx)
* @param profile profile for the A2DP device
* (either {@link android.bluetooth.BluetoothProfile.A2DP} or
* {@link android.bluetooth.BluetoothProfile.A2DP_SINK})
* @return a delay in ms that the caller should wait before broadcasting
* BluetoothA2dp.ACTION_CONNECTION_STATE_CHANGED intent.
* {@hide}
*/
public int setBluetoothA2dpDeviceConnectionState(BluetoothDevice device, int state,
int profile) {
IAudioService service = getService();
int delay = 0;
try {
delay = service.setBluetoothA2dpDeviceConnectionState(device, state, profile);
} catch (RemoteException e) {
Log.e(TAG, "Dead object in setBluetoothA2dpDeviceConnectionState "+e);
}
return delay;
}
/** {@hide} */
public IRingtonePlayer getRingtonePlayer() {
try {
return getService().getRingtonePlayer();
} catch (RemoteException e) {
return null;
}
}
/**
* Used as a key for {@link #getProperty} to request the native or optimal output sample rate
* for this device's primary output stream, in decimal Hz.
*/
public static final String PROPERTY_OUTPUT_SAMPLE_RATE =
"android.media.property.OUTPUT_SAMPLE_RATE";
/**
* Used as a key for {@link #getProperty} to request the native or optimal output buffer size
* for this device's primary output stream, in decimal PCM frames.
*/
public static final String PROPERTY_OUTPUT_FRAMES_PER_BUFFER =
"android.media.property.OUTPUT_FRAMES_PER_BUFFER";
/**
* Used as a key for {@link #getProperty} to determine if the default microphone audio source
* supports near-ultrasound frequencies (range of 18 - 21 kHz).
*/
public static final String PROPERTY_SUPPORT_MIC_NEAR_ULTRASOUND =
"android.media.property.SUPPORT_MIC_NEAR_ULTRASOUND";
/**
* Used as a key for {@link #getProperty} to determine if the default speaker audio path
* supports near-ultrasound frequencies (range of 18 - 21 kHz).
*/
public static final String PROPERTY_SUPPORT_SPEAKER_NEAR_ULTRASOUND =
"android.media.property.SUPPORT_SPEAKER_NEAR_ULTRASOUND";
/**
* Returns the value of the property with the specified key.
* @param key One of the strings corresponding to a property key: either
* {@link #PROPERTY_OUTPUT_SAMPLE_RATE} or
* {@link #PROPERTY_OUTPUT_FRAMES_PER_BUFFER}
* @return A string representing the associated value for that property key,
* or null if there is no value for that key.
*/
public String getProperty(String key) {
if (PROPERTY_OUTPUT_SAMPLE_RATE.equals(key)) {
int outputSampleRate = AudioSystem.getPrimaryOutputSamplingRate();
return outputSampleRate > 0 ? Integer.toString(outputSampleRate) : null;
} else if (PROPERTY_OUTPUT_FRAMES_PER_BUFFER.equals(key)) {
int outputFramesPerBuffer = AudioSystem.getPrimaryOutputFrameCount();
return outputFramesPerBuffer > 0 ? Integer.toString(outputFramesPerBuffer) : null;
} else if (PROPERTY_SUPPORT_MIC_NEAR_ULTRASOUND.equals(key)) {
// Will throw a RuntimeException Resources.NotFoundException if this config value is
// not found.
return String.valueOf(getContext().getResources().getBoolean(
com.android.internal.R.bool.config_supportMicNearUltrasound));
} else if (PROPERTY_SUPPORT_SPEAKER_NEAR_ULTRASOUND.equals(key)) {
return String.valueOf(getContext().getResources().getBoolean(
com.android.internal.R.bool.config_supportSpeakerNearUltrasound));
} else {
// null or unknown key
return null;
}
}
/**
* Returns the estimated latency for the given stream type in milliseconds.
*
* DO NOT UNHIDE. The existing approach for doing A/V sync has too many problems. We need
* a better solution.
* @hide
*/
public int getOutputLatency(int streamType) {
return AudioSystem.getOutputLatency(streamType);
}
/**
* Registers a global volume controller interface. Currently limited to SystemUI.
*
* @hide
*/
public void setVolumeController(IVolumeController controller) {
try {
getService().setVolumeController(controller);
} catch (RemoteException e) {
Log.w(TAG, "Error setting volume controller", e);
}
}
/**
* Notify audio manager about volume controller visibility changes.
* Currently limited to SystemUI.
*
* @hide
*/
public void notifyVolumeControllerVisible(IVolumeController controller, boolean visible) {
try {
getService().notifyVolumeControllerVisible(controller, visible);
} catch (RemoteException e) {
Log.w(TAG, "Error notifying about volume controller visibility", e);
}
}
/**
* Only useful for volume controllers.
* @hide
*/
public boolean isStreamAffectedByRingerMode(int streamType) {
try {
return getService().isStreamAffectedByRingerMode(streamType);
} catch (RemoteException e) {
Log.w(TAG, "Error calling isStreamAffectedByRingerMode", e);
return false;
}
}
/**
* Only useful for volume controllers.
* @hide
*/
public boolean isStreamAffectedByMute(int streamType) {
try {
return getService().isStreamAffectedByMute(streamType);
} catch (RemoteException e) {
Log.w(TAG, "Error calling isStreamAffectedByMute", e);
return false;
}
}
/**
* Only useful for volume controllers.
* @hide
*/
public void disableSafeMediaVolume() {
try {
getService().disableSafeMediaVolume(mApplicationContext.getOpPackageName());
} catch (RemoteException e) {
Log.w(TAG, "Error disabling safe media volume", e);
}
}
/**
* Only useful for volume controllers.
* @hide
*/
public void setRingerModeInternal(int ringerMode) {
try {
getService().setRingerModeInternal(ringerMode, getContext().getOpPackageName());
} catch (RemoteException e) {
Log.w(TAG, "Error calling setRingerModeInternal", e);
}
}
/**
* Only useful for volume controllers.
* @hide
*/
public int getRingerModeInternal() {
try {
return getService().getRingerModeInternal();
} catch (RemoteException e) {
Log.w(TAG, "Error calling getRingerModeInternal", e);
return RINGER_MODE_NORMAL;
}
}
/**
* Only useful for volume controllers.
* @hide
*/
public void setVolumePolicy(VolumePolicy policy) {
try {
getService().setVolumePolicy(policy);
} catch (RemoteException e) {
Log.w(TAG, "Error calling setVolumePolicy", e);
}
}
/**
* Set Hdmi Cec system audio mode.
*
* @param on whether to be on system audio mode
* @return output device type. 0 (DEVICE_NONE) if failed to set device.
* @hide
*/
public int setHdmiSystemAudioSupported(boolean on) {
try {
return getService().setHdmiSystemAudioSupported(on);
} catch (RemoteException e) {
Log.w(TAG, "Error setting system audio mode", e);
return AudioSystem.DEVICE_NONE;
}
}
/**
* Returns true if Hdmi Cec system audio mode is supported.
*
* @hide
*/
@SystemApi
public boolean isHdmiSystemAudioSupported() {
try {
return getService().isHdmiSystemAudioSupported();
} catch (RemoteException e) {
Log.w(TAG, "Error querying system audio mode", e);
return false;
}
}
/**
* Return codes for listAudioPorts(), createAudioPatch() ...
*/
/** @hide
* CANDIDATE FOR PUBLIC API
*/
public static final int SUCCESS = AudioSystem.SUCCESS;
/**
* A default error code.
*/
public static final int ERROR = AudioSystem.ERROR;
/** @hide
* CANDIDATE FOR PUBLIC API
*/
public static final int ERROR_BAD_VALUE = AudioSystem.BAD_VALUE;
/** @hide
*/
public static final int ERROR_INVALID_OPERATION = AudioSystem.INVALID_OPERATION;
/** @hide
*/
public static final int ERROR_PERMISSION_DENIED = AudioSystem.PERMISSION_DENIED;
/** @hide
*/
public static final int ERROR_NO_INIT = AudioSystem.NO_INIT;
/**
* An error code indicating that the object reporting it is no longer valid and needs to
* be recreated.
*/
public static final int ERROR_DEAD_OBJECT = AudioSystem.DEAD_OBJECT;
/**
* Returns a list of descriptors for all audio ports managed by the audio framework.
* Audio ports are nodes in the audio framework or audio hardware that can be configured
* or connected and disconnected with createAudioPatch() or releaseAudioPatch().
* See AudioPort for a list of attributes of each audio port.
* @param ports An AudioPort ArrayList where the list will be returned.
* @hide
*/
public static int listAudioPorts(ArrayList ports) {
return updateAudioPortCache(ports, null, null);
}
/**
* Returns a list of descriptors for all audio ports managed by the audio framework as
* it was before the last update calback.
* @param ports An AudioPort ArrayList where the list will be returned.
* @hide
*/
public static int listPreviousAudioPorts(ArrayList ports) {
return updateAudioPortCache(null, null, ports);
}
/**
* Specialized version of listAudioPorts() listing only audio devices (AudioDevicePort)
* @see listAudioPorts(ArrayList)
* @hide
*/
public static int listAudioDevicePorts(ArrayList devices) {
if (devices == null) {
return ERROR_BAD_VALUE;
}
ArrayList ports = new ArrayList();
int status = updateAudioPortCache(ports, null, null);
if (status == SUCCESS) {
filterDevicePorts(ports, devices);
}
return status;
}
/**
* Specialized version of listPreviousAudioPorts() listing only audio devices (AudioDevicePort)
* @see listPreviousAudioPorts(ArrayList)
* @hide
*/
public static int listPreviousAudioDevicePorts(ArrayList devices) {
if (devices == null) {
return ERROR_BAD_VALUE;
}
ArrayList ports = new ArrayList();
int status = updateAudioPortCache(null, null, ports);
if (status == SUCCESS) {
filterDevicePorts(ports, devices);
}
return status;
}
private static void filterDevicePorts(ArrayList ports,
ArrayList devices) {
devices.clear();
for (int i = 0; i < ports.size(); i++) {
if (ports.get(i) instanceof AudioDevicePort) {
devices.add((AudioDevicePort)ports.get(i));
}
}
}
/**
* Create a connection between two or more devices. The framework will reject the request if
* device types are not compatible or the implementation does not support the requested
* configuration.
* NOTE: current implementation is limited to one source and one sink per patch.
* @param patch AudioPatch array where the newly created patch will be returned.
* As input, if patch[0] is not null, the specified patch will be replaced by the
* new patch created. This avoids calling releaseAudioPatch() when modifying a
* patch and allows the implementation to optimize transitions.
* @param sources List of source audio ports. All must be AudioPort.ROLE_SOURCE.
* @param sinks List of sink audio ports. All must be AudioPort.ROLE_SINK.
*
* @return - {@link #SUCCESS} if connection is successful.
* - {@link #ERROR_BAD_VALUE} if incompatible device types are passed.
* - {@link #ERROR_INVALID_OPERATION} if the requested connection is not supported.
* - {@link #ERROR_PERMISSION_DENIED} if the client does not have permission to create
* a patch.
* - {@link #ERROR_DEAD_OBJECT} if the server process is dead
* - {@link #ERROR} if patch cannot be connected for any other reason.
*
* patch[0] contains the newly created patch
* @hide
*/
public static int createAudioPatch(AudioPatch[] patch,
AudioPortConfig[] sources,
AudioPortConfig[] sinks) {
return AudioSystem.createAudioPatch(patch, sources, sinks);
}
/**
* Releases an existing audio patch connection.
* @param patch The audio patch to disconnect.
* @return - {@link #SUCCESS} if disconnection is successful.
* - {@link #ERROR_BAD_VALUE} if the specified patch does not exist.
* - {@link #ERROR_PERMISSION_DENIED} if the client does not have permission to release
* a patch.
* - {@link #ERROR_DEAD_OBJECT} if the server process is dead
* - {@link #ERROR} if patch cannot be released for any other reason.
* @hide
*/
public static int releaseAudioPatch(AudioPatch patch) {
return AudioSystem.releaseAudioPatch(patch);
}
/**
* List all existing connections between audio ports.
* @param patches An AudioPatch array where the list will be returned.
* @hide
*/
public static int listAudioPatches(ArrayList patches) {
return updateAudioPortCache(null, patches, null);
}
/**
* Set the gain on the specified AudioPort. The AudioGainConfig config is build by
* AudioGain.buildConfig()
* @hide
*/
public static int setAudioPortGain(AudioPort port, AudioGainConfig gain) {
if (port == null || gain == null) {
return ERROR_BAD_VALUE;
}
AudioPortConfig activeConfig = port.activeConfig();
AudioPortConfig config = new AudioPortConfig(port, activeConfig.samplingRate(),
activeConfig.channelMask(), activeConfig.format(), gain);
config.mConfigMask = AudioPortConfig.GAIN;
return AudioSystem.setAudioPortConfig(config);
}
/**
* Listener registered by client to be notified upon new audio port connections,
* disconnections or attributes update.
* @hide
*/
public interface OnAudioPortUpdateListener {
/**
* Callback method called upon audio port list update.
* @param portList the updated list of audio ports
*/
public void onAudioPortListUpdate(AudioPort[] portList);
/**
* Callback method called upon audio patch list update.
* @param patchList the updated list of audio patches
*/
public void onAudioPatchListUpdate(AudioPatch[] patchList);
/**
* Callback method called when the mediaserver dies
*/
public void onServiceDied();
}
/**
* Register an audio port list update listener.
* @hide
*/
public void registerAudioPortUpdateListener(OnAudioPortUpdateListener l) {
sAudioPortEventHandler.init();
sAudioPortEventHandler.registerListener(l);
}
/**
* Unregister an audio port list update listener.
* @hide
*/
public void unregisterAudioPortUpdateListener(OnAudioPortUpdateListener l) {
sAudioPortEventHandler.unregisterListener(l);
}
//
// AudioPort implementation
//
static final int AUDIOPORT_GENERATION_INIT = 0;
static Integer sAudioPortGeneration = new Integer(AUDIOPORT_GENERATION_INIT);
static ArrayList sAudioPortsCached = new ArrayList();
static ArrayList sPreviousAudioPortsCached = new ArrayList();
static ArrayList sAudioPatchesCached = new ArrayList();
static int resetAudioPortGeneration() {
int generation;
synchronized (sAudioPortGeneration) {
generation = sAudioPortGeneration;
sAudioPortGeneration = AUDIOPORT_GENERATION_INIT;
}
return generation;
}
static int updateAudioPortCache(ArrayList ports, ArrayList patches,
ArrayList previousPorts) {
sAudioPortEventHandler.init();
synchronized (sAudioPortGeneration) {
if (sAudioPortGeneration == AUDIOPORT_GENERATION_INIT) {
int[] patchGeneration = new int[1];
int[] portGeneration = new int[1];
int status;
ArrayList newPorts = new ArrayList();
ArrayList newPatches = new ArrayList();
do {
newPorts.clear();
status = AudioSystem.listAudioPorts(newPorts, portGeneration);
if (status != SUCCESS) {
Log.w(TAG, "updateAudioPortCache: listAudioPorts failed");
return status;
}
newPatches.clear();
status = AudioSystem.listAudioPatches(newPatches, patchGeneration);
if (status != SUCCESS) {
Log.w(TAG, "updateAudioPortCache: listAudioPatches failed");
return status;
}
} while (patchGeneration[0] != portGeneration[0]);
for (int i = 0; i < newPatches.size(); i++) {
for (int j = 0; j < newPatches.get(i).sources().length; j++) {
AudioPortConfig portCfg = updatePortConfig(newPatches.get(i).sources()[j],
newPorts);
newPatches.get(i).sources()[j] = portCfg;
}
for (int j = 0; j < newPatches.get(i).sinks().length; j++) {
AudioPortConfig portCfg = updatePortConfig(newPatches.get(i).sinks()[j],
newPorts);
newPatches.get(i).sinks()[j] = portCfg;
}
}
for (Iterator i = newPatches.iterator(); i.hasNext(); ) {
AudioPatch newPatch = i.next();
boolean hasInvalidPort = false;
for (AudioPortConfig portCfg : newPatch.sources()) {
if (portCfg == null) {
hasInvalidPort = true;
break;
}
}
for (AudioPortConfig portCfg : newPatch.sinks()) {
if (portCfg == null) {
hasInvalidPort = true;
break;
}
}
if (hasInvalidPort) {
// Temporarily remove patches with invalid ports. One who created the patch
// is responsible for dealing with the port change.
i.remove();
}
}
sPreviousAudioPortsCached = sAudioPortsCached;
sAudioPortsCached = newPorts;
sAudioPatchesCached = newPatches;
sAudioPortGeneration = portGeneration[0];
}
if (ports != null) {
ports.clear();
ports.addAll(sAudioPortsCached);
}
if (patches != null) {
patches.clear();
patches.addAll(sAudioPatchesCached);
}
if (previousPorts != null) {
previousPorts.clear();
previousPorts.addAll(sPreviousAudioPortsCached);
}
}
return SUCCESS;
}
static AudioPortConfig updatePortConfig(AudioPortConfig portCfg, ArrayList ports) {
AudioPort port = portCfg.port();
int k;
for (k = 0; k < ports.size(); k++) {
// compare handles because the port returned by JNI is not of the correct
// subclass
if (ports.get(k).handle().equals(port.handle())) {
port = ports.get(k);
break;
}
}
if (k == ports.size()) {
// this hould never happen
Log.e(TAG, "updatePortConfig port not found for handle: "+port.handle().id());
return null;
}
AudioGainConfig gainCfg = portCfg.gain();
if (gainCfg != null) {
AudioGain gain = port.gain(gainCfg.index());
gainCfg = gain.buildConfig(gainCfg.mode(),
gainCfg.channelMask(),
gainCfg.values(),
gainCfg.rampDurationMs());
}
return port.buildConfig(portCfg.samplingRate(),
portCfg.channelMask(),
portCfg.format(),
gainCfg);
}
private OnAmPortUpdateListener mPortListener = null;
/**
* The message sent to apps when the contents of the device list changes if they provide
* a {#link Handler} object to addOnAudioDeviceConnectionListener().
*/
private final static int MSG_DEVICES_CALLBACK_REGISTERED = 0;
private final static int MSG_DEVICES_DEVICES_ADDED = 1;
private final static int MSG_DEVICES_DEVICES_REMOVED = 2;
/**
* The list of {@link AudioDeviceCallback} objects to receive add/remove notifications.
*/
private ArrayMap
mDeviceCallbacks =
new ArrayMap();
/**
* The following are flags to allow users of {@link AudioManager#getDevices(int)} to filter
* the results list to only those device types they are interested in.
*/
/**
* Specifies to the {@link AudioManager#getDevices(int)} method to include
* source (i.e. input) audio devices.
*/
public static final int GET_DEVICES_INPUTS = 0x0001;
/**
* Specifies to the {@link AudioManager#getDevices(int)} method to include
* sink (i.e. output) audio devices.
*/
public static final int GET_DEVICES_OUTPUTS = 0x0002;
/**
* Specifies to the {@link AudioManager#getDevices(int)} method to include both
* source and sink devices.
*/
public static final int GET_DEVICES_ALL = GET_DEVICES_OUTPUTS | GET_DEVICES_INPUTS;
/**
* Determines if a given AudioDevicePort meets the specified filter criteria.
* @param port The port to test.
* @param flags A set of bitflags specifying the criteria to test.
* @see {@link GET_DEVICES_OUTPUTS} and {@link GET_DEVICES_INPUTS}
**/
private static boolean checkFlags(AudioDevicePort port, int flags) {
return port.role() == AudioPort.ROLE_SINK && (flags & GET_DEVICES_OUTPUTS) != 0 ||
port.role() == AudioPort.ROLE_SOURCE && (flags & GET_DEVICES_INPUTS) != 0;
}
private static boolean checkTypes(AudioDevicePort port) {
return AudioDeviceInfo.convertInternalDeviceToDeviceType(port.type()) !=
AudioDeviceInfo.TYPE_UNKNOWN &&
port.type() != AudioSystem.DEVICE_IN_BACK_MIC;
}
/**
* Returns an array of {@link AudioDeviceInfo} objects corresponding to the audio devices
* currently connected to the system and meeting the criteria specified in the
* flags parameter.
* @param flags A set of bitflags specifying the criteria to test.
* @see {@link GET_DEVICES_OUTPUTS}, {@link GET_DEVICES_INPUTS} and {@link GET_DEVICES_ALL}.
* @return A (possibly zero-length) array of AudioDeviceInfo objects.
*/
public AudioDeviceInfo[] getDevices(int flags) {
return getDevicesStatic(flags);
}
/**
* Does the actual computation to generate an array of (externally-visible) AudioDeviceInfo
* objects from the current (internal) AudioDevicePort list.
*/
private static AudioDeviceInfo[]
infoListFromPortList(ArrayList ports, int flags) {
// figure out how many AudioDeviceInfo we need space for...
int numRecs = 0;
for (AudioDevicePort port : ports) {
if (checkTypes(port) && checkFlags(port, flags)) {
numRecs++;
}
}
// Now load them up...
AudioDeviceInfo[] deviceList = new AudioDeviceInfo[numRecs];
int slot = 0;
for (AudioDevicePort port : ports) {
if (checkTypes(port) && checkFlags(port, flags)) {
deviceList[slot++] = new AudioDeviceInfo(port);
}
}
return deviceList;
}
/*
* Calculate the list of ports that are in ports_B, but not in ports_A. This is used by
* the add/remove callback mechanism to provide a list of the newly added or removed devices
* rather than the whole list and make the app figure it out.
* Note that calling this method with:
* ports_A == PREVIOUS_ports and ports_B == CURRENT_ports will calculated ADDED ports.
* ports_A == CURRENT_ports and ports_B == PREVIOUS_ports will calculated REMOVED ports.
*/
private static AudioDeviceInfo[] calcListDeltas(
ArrayList ports_A, ArrayList ports_B, int flags) {
ArrayList delta_ports = new ArrayList();
AudioDevicePort cur_port = null;
for (int cur_index = 0; cur_index < ports_B.size(); cur_index++) {
boolean cur_port_found = false;
cur_port = ports_B.get(cur_index);
for (int prev_index = 0;
prev_index < ports_A.size() && !cur_port_found;
prev_index++) {
cur_port_found = (cur_port.id() == ports_A.get(prev_index).id());
}
if (!cur_port_found) {
delta_ports.add(cur_port);
}
}
return infoListFromPortList(delta_ports, flags);
}
/**
* Generates a list of AudioDeviceInfo objects corresponding to the audio devices currently
* connected to the system and meeting the criteria specified in the flags
* parameter.
* This is an internal function. The public API front is getDevices(int).
* @param flags A set of bitflags specifying the criteria to test.
* @see {@link GET_DEVICES_OUTPUTS}, {@link GET_DEVICES_INPUTS} and {@link GET_DEVICES_ALL}.
* @return A (possibly zero-length) array of AudioDeviceInfo objects.
* @hide
*/
public static AudioDeviceInfo[] getDevicesStatic(int flags) {
ArrayList ports = new ArrayList();
int status = AudioManager.listAudioDevicePorts(ports);
if (status != AudioManager.SUCCESS) {
// fail and bail!
return new AudioDeviceInfo[0]; // Always return an array.
}
return infoListFromPortList(ports, flags);
}
/**
* Registers an {@link AudioDeviceCallback} object to receive notifications of changes
* to the set of connected audio devices.
* @param callback The {@link AudioDeviceCallback} object to receive connect/disconnect
* notifications.
* @param handler Specifies the {@link Handler} object for the thread on which to execute
* the callback. If null, the {@link Handler} associated with the main
* {@link Looper} will be used.
*/
public void registerAudioDeviceCallback(AudioDeviceCallback callback,
android.os.Handler handler) {
synchronized (mDeviceCallbacks) {
if (callback != null && !mDeviceCallbacks.containsKey(callback)) {
if (mDeviceCallbacks.size() == 0) {
if (mPortListener == null) {
mPortListener = new OnAmPortUpdateListener();
}
registerAudioPortUpdateListener(mPortListener);
}
NativeEventHandlerDelegate delegate =
new NativeEventHandlerDelegate(callback, handler);
mDeviceCallbacks.put(callback, delegate);
broadcastDeviceListChange(delegate.getHandler());
}
}
}
/**
* Unregisters an {@link AudioDeviceCallback} object which has been previously registered
* to receive notifications of changes to the set of connected audio devices.
* @param callback The {@link AudioDeviceCallback} object that was previously registered
* with {@link AudioManager#registerAudioDeviceCallback) to be unregistered.
*/
public void unregisterAudioDeviceCallback(AudioDeviceCallback callback) {
synchronized (mDeviceCallbacks) {
if (mDeviceCallbacks.containsKey(callback)) {
mDeviceCallbacks.remove(callback);
if (mDeviceCallbacks.size() == 0) {
unregisterAudioPortUpdateListener(mPortListener);
}
}
}
}
// Since we need to calculate the changes since THE LAST NOTIFICATION, and not since the
// (unpredictable) last time updateAudioPortCache() was called by someone, keep a list
// of the ports that exist at the time of the last notification.
private ArrayList mPreviousPorts = new ArrayList();
/**
* Internal method to compute and generate add/remove messages and then send to any
* registered callbacks.
*/
private void broadcastDeviceListChange(Handler handler) {
int status;
// Get the new current set of ports
ArrayList current_ports = new ArrayList();
status = AudioManager.listAudioDevicePorts(current_ports);
if (status != AudioManager.SUCCESS) {
return;
}
if (handler != null) {
// This is the callback for the registration, so send the current list
AudioDeviceInfo[] deviceList =
infoListFromPortList(current_ports, GET_DEVICES_ALL);
handler.sendMessage(
Message.obtain(handler, MSG_DEVICES_CALLBACK_REGISTERED, deviceList));
} else {
AudioDeviceInfo[] added_devices =
calcListDeltas(mPreviousPorts, current_ports, GET_DEVICES_ALL);
AudioDeviceInfo[] removed_devices =
calcListDeltas(current_ports, mPreviousPorts, GET_DEVICES_ALL);
if (added_devices.length != 0 || removed_devices.length != 0) {
synchronized (mDeviceCallbacks) {
for (int i = 0; i < mDeviceCallbacks.size(); i++) {
handler = mDeviceCallbacks.valueAt(i).getHandler();
if (handler != null) {
if (added_devices.length != 0) {
handler.sendMessage(Message.obtain(handler,
MSG_DEVICES_DEVICES_ADDED,
added_devices));
}
if (removed_devices.length != 0) {
handler.sendMessage(Message.obtain(handler,
MSG_DEVICES_DEVICES_REMOVED,
removed_devices));
}
}
}
}
}
}
mPreviousPorts = current_ports;
}
/**
* Handles Port list update notifications from the AudioManager
*/
private class OnAmPortUpdateListener implements AudioManager.OnAudioPortUpdateListener {
static final String TAG = "OnAmPortUpdateListener";
public void onAudioPortListUpdate(AudioPort[] portList) {
broadcastDeviceListChange(null);
}
/**
* Callback method called upon audio patch list update.
* Note: We don't do anything with Patches at this time, so ignore this notification.
* @param patchList the updated list of audio patches.
*/
public void onAudioPatchListUpdate(AudioPatch[] patchList) {}
/**
* Callback method called when the mediaserver dies
*/
public void onServiceDied() {
broadcastDeviceListChange(null);
}
}
//---------------------------------------------------------
// Inner classes
//--------------------
/**
* Helper class to handle the forwarding of native events to the appropriate listener
* (potentially) handled in a different thread.
*/
private class NativeEventHandlerDelegate {
private final Handler mHandler;
NativeEventHandlerDelegate(final AudioDeviceCallback callback,
Handler handler) {
// find the looper for our new event handler
Looper looper;
if (handler != null) {
looper = handler.getLooper();
} else {
// no given handler, use the looper the addListener call was called in
looper = Looper.getMainLooper();
}
// construct the event handler with this looper
if (looper != null) {
// implement the event handler delegate
mHandler = new Handler(looper) {
@Override
public void handleMessage(Message msg) {
switch(msg.what) {
case MSG_DEVICES_CALLBACK_REGISTERED:
case MSG_DEVICES_DEVICES_ADDED:
if (callback != null) {
callback.onAudioDevicesAdded((AudioDeviceInfo[])msg.obj);
}
break;
case MSG_DEVICES_DEVICES_REMOVED:
if (callback != null) {
callback.onAudioDevicesRemoved((AudioDeviceInfo[])msg.obj);
}
break;
default:
Log.e(TAG, "Unknown native event type: " + msg.what);
break;
}
}
};
} else {
mHandler = null;
}
}
Handler getHandler() {
return mHandler;
}
}
}