| /* |
| * 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.annotation.SdkConstant; |
| import android.annotation.SdkConstant.SdkConstantType; |
| import android.app.PendingIntent; |
| import android.bluetooth.BluetoothDevice; |
| import android.content.ComponentName; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.os.Binder; |
| import android.os.Handler; |
| import android.os.IBinder; |
| import android.os.Looper; |
| import android.os.Message; |
| import android.os.RemoteException; |
| import android.os.SystemClock; |
| import android.os.ServiceManager; |
| import android.provider.Settings; |
| import android.util.Log; |
| import android.view.KeyEvent; |
| import android.view.VolumePanel; |
| |
| import java.util.HashMap; |
| |
| /** |
| * AudioManager provides access to volume and ringer mode control. |
| * <p> |
| * Use <code>Context.getSystemService(Context.AUDIO_SERVICE)</code> to get |
| * an instance of this class. |
| */ |
| public class AudioManager { |
| |
| private final Context mContext; |
| private long mVolumeKeyUpTime; |
| private final boolean mUseMasterVolume; |
| private final boolean mUseVolumeKeySounds; |
| private static String TAG = "AudioManager"; |
| |
| /** |
| * 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"; |
| |
| /** |
| * 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 master volume changes. |
| * Includes the new volume |
| * |
| * @see #EXTRA_MASTER_VOLUME_VALUE |
| * @see #EXTRA_PREV_MASTER_VOLUME_VALUE |
| */ |
| @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) |
| public static final String MASTER_VOLUME_CHANGED_ACTION = |
| "android.media.MASTER_VOLUME_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 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 new master volume value for the master volume changed intent. |
| * Value is integer between 0 and 100 inclusive. |
| */ |
| public static final String EXTRA_MASTER_VOLUME_VALUE = |
| "android.media.EXTRA_MASTER_VOLUME_VALUE"; |
| |
| /** |
| * @hide The previous master volume value for the master volume changed intent. |
| * Value is integer between 0 and 100 inclusive. |
| */ |
| public static final String EXTRA_PREV_MASTER_VOLUME_VALUE = |
| "android.media.EXTRA_PREV_MASTER_VOLUME_VALUE"; |
| |
| /** |
| * @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"; |
| |
| /** 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; |
| |
| |
| /** @hide Default volume index values for audio streams */ |
| public static final int[] DEFAULT_STREAM_VOLUME = new int[] { |
| 4, // STREAM_VOICE_CALL |
| 7, // STREAM_SYSTEM |
| 5, // STREAM_RING |
| 11, // STREAM_MUSIC |
| 6, // STREAM_ALARM |
| 5, // STREAM_NOTIFICATION |
| 7, // STREAM_BLUETOOTH_SCO |
| 7, // STREAM_SYSTEM_ENFORCED |
| 11, // STREAM_DTMF |
| 11 // STREAM_TTS |
| }; |
| |
| /** |
| * 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; |
| |
| // 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. |
| * <p> |
| * 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. |
| * <p> |
| * 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; |
| |
| /** |
| * 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. |
| private 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) { |
| mContext = context; |
| mUseMasterVolume = mContext.getResources().getBoolean( |
| com.android.internal.R.bool.config_useMasterVolume); |
| mUseVolumeKeySounds = mContext.getResources().getBoolean( |
| com.android.internal.R.bool.config_useVolumeKeySounds); |
| } |
| |
| private static IAudioService getService() |
| { |
| if (sService != null) { |
| return sService; |
| } |
| IBinder b = ServiceManager.getService(Context.AUDIO_SERVICE); |
| sService = IAudioService.Stub.asInterface(b); |
| return sService; |
| } |
| |
| /** |
| * @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 + VolumePanel.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. |
| */ |
| if (mUseMasterVolume) { |
| adjustMasterVolume(ADJUST_SAME, AudioManager.FLAG_REMOVE_SOUND_AND_VIBRATE); |
| } else { |
| 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. |
| */ |
| int flags = FLAG_SHOW_UI | FLAG_VIBRATE; |
| |
| if (mUseMasterVolume) { |
| adjustMasterVolume( |
| keyCode == KeyEvent.KEYCODE_VOLUME_UP |
| ? ADJUST_RAISE |
| : ADJUST_LOWER, |
| flags); |
| } else { |
| adjustSuggestedStreamVolume( |
| keyCode == KeyEvent.KEYCODE_VOLUME_UP |
| ? ADJUST_RAISE |
| : ADJUST_LOWER, |
| stream, |
| flags); |
| } |
| break; |
| case KeyEvent.KEYCODE_VOLUME_MUTE: |
| if (event.getRepeatCount() == 0) { |
| if (mUseMasterVolume) { |
| setMasterMute(!isMasterMute()); |
| } else { |
| // TODO: Actually handle MUTE. |
| } |
| } |
| 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) { |
| if (mUseMasterVolume) { |
| adjustMasterVolume(ADJUST_SAME, FLAG_PLAY_SOUND); |
| } else { |
| int flags = FLAG_PLAY_SOUND; |
| adjustSuggestedStreamVolume( |
| ADJUST_SAME, |
| stream, |
| flags); |
| } |
| } |
| mVolumeKeyUpTime = SystemClock.uptimeMillis(); |
| break; |
| } |
| } |
| |
| /** |
| * Adjusts the volume of a particular stream by one step in a direction. |
| * <p> |
| * 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 { |
| if (mUseMasterVolume) { |
| service.adjustMasterVolume(direction, flags); |
| } else { |
| service.adjustStreamVolume(streamType, direction, flags); |
| } |
| } 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. |
| * <p> |
| * This method should only be used by applications that replace the platform-wide |
| * management of audio settings or the main telephony application. |
| * |
| * @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 #adjustSuggestedStreamVolume(int, int, int) |
| * @see #adjustStreamVolume(int, int, int) |
| * @see #setStreamVolume(int, int, int) |
| */ |
| public void adjustVolume(int direction, int flags) { |
| IAudioService service = getService(); |
| try { |
| if (mUseMasterVolume) { |
| service.adjustMasterVolume(direction, flags); |
| } else { |
| service.adjustVolume(direction, flags); |
| } |
| } catch (RemoteException e) { |
| Log.e(TAG, "Dead object in adjustVolume", e); |
| } |
| } |
| |
| /** |
| * Adjusts the volume of the most relevant stream, or the given fallback |
| * stream. |
| * <p> |
| * This method should only be used by applications that replace the platform-wide |
| * management of audio settings or the main telephony application. |
| * |
| * @param direction The direction to adjust the volume. One of |
| * {@link #ADJUST_LOWER}, {@link #ADJUST_RAISE}, or |
| * {@link #ADJUST_SAME}. |
| * @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) |
| */ |
| public void adjustSuggestedStreamVolume(int direction, int suggestedStreamType, int flags) { |
| IAudioService service = getService(); |
| try { |
| if (mUseMasterVolume) { |
| service.adjustMasterVolume(direction, flags); |
| } else { |
| service.adjustSuggestedStreamVolume(direction, suggestedStreamType, flags); |
| } |
| } catch (RemoteException e) { |
| Log.e(TAG, "Dead object in adjustSuggestedStreamVolume", e); |
| } |
| } |
| |
| /** |
| * Adjusts the master volume for the device's audio amplifier. |
| * <p> |
| * |
| * @param steps The number of volume steps to adjust. A positive |
| * value will raise the volume. |
| * @param flags One or more flags. |
| * @hide |
| */ |
| public void adjustMasterVolume(int steps, int flags) { |
| IAudioService service = getService(); |
| try { |
| service.adjustMasterVolume(steps, flags); |
| } catch (RemoteException e) { |
| Log.e(TAG, "Dead object in adjustMasterVolume", 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.getRingerMode(); |
| } 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; |
| } |
| return true; |
| } |
| |
| /** |
| * 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 { |
| if (mUseMasterVolume) { |
| return service.getMasterMaxVolume(); |
| } else { |
| return service.getStreamMaxVolume(streamType); |
| } |
| } catch (RemoteException e) { |
| Log.e(TAG, "Dead object in getStreamMaxVolume", 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 { |
| if (mUseMasterVolume) { |
| return service.getMasterVolume(); |
| } else { |
| 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 { |
| if (mUseMasterVolume) { |
| return service.getLastAudibleMasterVolume(); |
| } else { |
| 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... |
| * @hide |
| */ |
| public int getMasterStreamType() { |
| IAudioService service = getService(); |
| try { |
| return service.getMasterStreamType(); |
| } catch (RemoteException e) { |
| Log.e(TAG, "Dead object in getMasterStreamType", e); |
| return STREAM_RING; |
| } |
| } |
| |
| /** |
| * Sets the ringer mode. |
| * <p> |
| * 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. |
| * |
| * @param ringerMode The ringer mode, one of {@link #RINGER_MODE_NORMAL}, |
| * {@link #RINGER_MODE_SILENT}, or {@link #RINGER_MODE_VIBRATE}. |
| * @see #getRingerMode() |
| */ |
| public void setRingerMode(int ringerMode) { |
| if (!isValidRingerMode(ringerMode)) { |
| return; |
| } |
| IAudioService service = getService(); |
| try { |
| service.setRingerMode(ringerMode); |
| } catch (RemoteException e) { |
| Log.e(TAG, "Dead object in setRingerMode", e); |
| } |
| } |
| |
| /** |
| * Sets the volume index for a particular stream. |
| * |
| * @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) |
| */ |
| public void setStreamVolume(int streamType, int index, int flags) { |
| IAudioService service = getService(); |
| try { |
| if (mUseMasterVolume) { |
| service.setMasterVolume(index, flags); |
| } else { |
| service.setStreamVolume(streamType, index, flags); |
| } |
| } catch (RemoteException e) { |
| Log.e(TAG, "Dead object in setStreamVolume", e); |
| } |
| } |
| |
| /** |
| * Returns the maximum volume index for master volume. |
| * |
| * @hide |
| */ |
| public int getMasterMaxVolume() { |
| IAudioService service = getService(); |
| try { |
| return service.getMasterMaxVolume(); |
| } catch (RemoteException e) { |
| Log.e(TAG, "Dead object in getMasterMaxVolume", e); |
| return 0; |
| } |
| } |
| |
| /** |
| * Returns the current volume index for master volume. |
| * |
| * @return The current volume index for master volume. |
| * @hide |
| */ |
| public int getMasterVolume() { |
| IAudioService service = getService(); |
| try { |
| return service.getMasterVolume(); |
| } catch (RemoteException e) { |
| Log.e(TAG, "Dead object in getMasterVolume", e); |
| return 0; |
| } |
| } |
| |
| /** |
| * Get last audible volume before master volume was muted. |
| * |
| * @hide |
| */ |
| public int getLastAudibleMasterVolume() { |
| IAudioService service = getService(); |
| try { |
| return service.getLastAudibleMasterVolume(); |
| } catch (RemoteException e) { |
| Log.e(TAG, "Dead object in getLastAudibleMasterVolume", e); |
| return 0; |
| } |
| } |
| |
| /** |
| * Sets the volume index for master volume. |
| * |
| * @param index The volume index to set. See |
| * {@link #getMasterMaxVolume(int)} for the largest valid value. |
| * @param flags One or more flags. |
| * @see #getMasterMaxVolume(int) |
| * @see #getMasterVolume(int) |
| * @hide |
| */ |
| public void setMasterVolume(int index, int flags) { |
| IAudioService service = getService(); |
| try { |
| service.setMasterVolume(index, flags); |
| } catch (RemoteException e) { |
| Log.e(TAG, "Dead object in setMasterVolume", e); |
| } |
| } |
| |
| /** |
| * Solo or unsolo a particular stream. All other streams are muted. |
| * <p> |
| * The solo command is protected against client process death: if a process |
| * with an active solo request on a stream dies, all streams that were muted |
| * because of this request will be unmuted automatically. |
| * <p> |
| * The solo requests for a given stream are cumulative: the AudioManager |
| * can receive several solo requests from one or more clients and the stream |
| * will be unsoloed only when the same number of unsolo requests are received. |
| * <p> |
| * For a better user experience, applications MUST unsolo a soloed stream |
| * in onPause() and solo is again in onResume() if appropriate. |
| * |
| * @param streamType The stream to be soloed/unsoloed. |
| * @param state The required solo state: true for solo ON, false for solo OFF |
| */ |
| public void setStreamSolo(int streamType, boolean state) { |
| IAudioService service = getService(); |
| try { |
| service.setStreamSolo(streamType, state, mICallBack); |
| } catch (RemoteException e) { |
| Log.e(TAG, "Dead object in setStreamSolo", e); |
| } |
| } |
| |
| /** |
| * Mute or unmute an audio stream. |
| * <p> |
| * 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. |
| * <p> |
| * 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. |
| * <p> |
| * For a better user experience, applications MUST unmute a muted stream |
| * in onPause() and mute is again in onResume() if appropriate. |
| * <p> |
| * 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 to be muted/unmuted. |
| * @param state The required mute state: true for mute ON, false for mute OFF |
| */ |
| public void setStreamMute(int streamType, boolean state) { |
| IAudioService service = getService(); |
| try { |
| service.setStreamMute(streamType, state, mICallBack); |
| } catch (RemoteException e) { |
| Log.e(TAG, "Dead object in setStreamMute", e); |
| } |
| } |
| |
| /** |
| * get stream mute state. |
| * |
| * @hide |
| */ |
| 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; |
| } |
| } |
| |
| /** |
| * set master mute state. |
| * |
| * @hide |
| */ |
| public void setMasterMute(boolean state) { |
| setMasterMute(state, FLAG_SHOW_UI); |
| } |
| |
| /** |
| * set master mute state with optional flags. |
| * |
| * @hide |
| */ |
| public void setMasterMute(boolean state, int flags) { |
| IAudioService service = getService(); |
| try { |
| service.setMasterMute(state, flags, mICallBack); |
| } catch (RemoteException e) { |
| Log.e(TAG, "Dead object in setMasterMute", e); |
| } |
| } |
| |
| /** |
| * 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. |
| * <p> |
| * 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. |
| * <p> |
| * 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. |
| * <p> |
| * 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. |
| * <p> |
| * 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 <var>true</var> to turn on speakerphone; |
| * <var>false</var> 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. |
| * <p>This intent has two extras: |
| * <ul> |
| * <li> {@link #EXTRA_SCO_AUDIO_STATE} - The new SCO audio state. </li> |
| * <li> {@link #EXTRA_SCO_AUDIO_PREVIOUS_STATE}- The previous SCO audio state. </li> |
| * </ul> |
| * <p> EXTRA_SCO_AUDIO_STATE or EXTRA_SCO_AUDIO_PREVIOUS_STATE can be any of: |
| * <ul> |
| * <li> {@link #SCO_AUDIO_STATE_DISCONNECTED}, </li> |
| * <li> {@link #SCO_AUDIO_STATE_CONNECTING} or </li> |
| * <li> {@link #SCO_AUDIO_STATE_CONNECTED}, </li> |
| * </ul> |
| * @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 mContext.getResources().getBoolean( |
| com.android.internal.R.bool.config_bluetooth_sco_off_call); |
| } |
| |
| /** |
| * Start bluetooth SCO audio connection. |
| * <p>Requires Permission: |
| * {@link android.Manifest.permission#MODIFY_AUDIO_SETTINGS}. |
| * <p>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. |
| * <p>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}. |
| * <p>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. |
| * <p>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). |
| * <p>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. |
| * <p>Even if a SCO connection is established, the following restrictions apply on audio |
| * output streams so that they can be routed to SCO headset: |
| * <ul> |
| * <li> the stream type must be {@link #STREAM_VOICE_CALL} </li> |
| * <li> the format must be mono </li> |
| * <li> the sampling must be 16kHz or 8kHz </li> |
| * </ul> |
| * <p>The following restrictions apply on input streams: |
| * <ul> |
| * <li> the format must be mono </li> |
| * <li> the sampling must be 8kHz </li> |
| * </ul> |
| * <p>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. |
| * @see #stopBluetoothSco() |
| * @see #ACTION_SCO_AUDIO_STATE_UPDATED |
| */ |
| public void startBluetoothSco(){ |
| IAudioService service = getService(); |
| try { |
| service.startBluetoothSco(mICallBack); |
| } catch (RemoteException e) { |
| Log.e(TAG, "Dead object in startBluetoothSco", e); |
| } |
| } |
| |
| /** |
| * Stop bluetooth SCO audio connection. |
| * <p>Requires Permission: |
| * {@link android.Manifest.permission#MODIFY_AUDIO_SETTINGS}. |
| * <p>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() |
| */ |
| 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. |
| * <p> |
| * 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 <var>true</var> to use bluetooth SCO for communications; |
| * <var>false</var> 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 <var>true</var> to route A2DP audio to/from Bluetooth |
| * headset; <var>false</var> 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; |
| } |
| } |
| |
| /** |
| * @hide |
| * Signals whether remote submix audio rerouting is enabled. |
| */ |
| public void setRemoteSubmixOn(boolean on, int address) { |
| IAudioService service = getService(); |
| try { |
| service.setRemoteSubmixOn(on, address); |
| } catch (RemoteException e) { |
| Log.e(TAG, "Dead object in setRemoteSubmixOn", e); |
| } |
| } |
| |
| /** |
| * Sets audio routing to the wired headset on or off. |
| * |
| * @param on set <var>true</var> to route audio to/from wired |
| * headset; <var>false</var> disable wired headset audio |
| * @deprecated Do not use. |
| */ |
| @Deprecated public void setWiredHeadsetOn(boolean on){ |
| } |
| |
| /** |
| * Checks whether a wired headset is connected or not. |
| * <p>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. |
| * <p> |
| * 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 <var>true</var> to mute the microphone; |
| * <var>false</var> to turn mute off |
| */ |
| public void setMicrophoneMute(boolean on){ |
| AudioSystem.muteMicrophone(on); |
| } |
| |
| /** |
| * 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. |
| * <p> |
| * 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); |
| } 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 speech recognition is active |
| * @return true if a recording with source {@link MediaRecorder.AudioSource#VOICE_RECOGNITION} |
| * is underway. |
| */ |
| public boolean isSpeechRecognitionActive() { |
| return AudioSystem.isSourceActive(MediaRecorder.AudioSource.VOICE_RECOGNITION); |
| } |
| |
| /** |
| * @hide |
| * If the stream is active locally or remotely, adjust its volume according to the enforced |
| * priority rules. |
| * Note: only AudioManager.STREAM_MUSIC is supported at the moment |
| */ |
| public void adjustLocalOrRemoteStreamVolume(int streamType, int direction) { |
| if (streamType != STREAM_MUSIC) { |
| Log.w(TAG, "adjustLocalOrRemoteStreamVolume() doesn't support stream " + streamType); |
| } |
| IAudioService service = getService(); |
| try { |
| service.adjustLocalOrRemoteStreamVolume(streamType, direction); |
| } catch (RemoteException e) { |
| Log.e(TAG, "Dead object in adjustLocalOrRemoteStreamVolume", e); |
| } |
| } |
| |
| /* |
| * 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 #setPrameters(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); |
| } |
| |
| /** |
| * Sets a varaible number of parameter values to 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; |
| /** |
| * @hide Number of sound effects |
| */ |
| public static final int NUM_SOUND_EFFECTS = 9; |
| |
| /** |
| * 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}, |
| * 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()) { |
| 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}, |
| * @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() { |
| return Settings.System.getInt(mContext.getContentResolver(), Settings.System.SOUND_EFFECTS_ENABLED, 0) != 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); |
| } |
| } |
| |
| /** |
| * 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 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<String, OnAudioFocusChangeListener> mAudioFocusIdListenerMap = |
| new HashMap<String, OnAudioFocusChangeListener>(); |
| /** |
| * 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) { |
| 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; |
| |
| |
| /** |
| * 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. |
| * 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; |
| if ((durationHint < AUDIOFOCUS_GAIN) || (durationHint > AUDIOFOCUS_GAIN_TRANSIENT_MAY_DUCK)) |
| { |
| Log.e(TAG, "Invalid duration hint, audio focus request denied"); |
| return status; |
| } |
| registerAudioFocusListener(l); |
| //TODO protect request by permission check? |
| IAudioService service = getService(); |
| try { |
| status = service.requestAudioFocus(streamType, durationHint, mICallBack, |
| mAudioFocusDispatcher, getIdForAudioFocusListener(l), |
| mContext.getPackageName() /* package name */); |
| } catch (RemoteException e) { |
| Log.e(TAG, "Can't call requestAudioFocus() on AudioService due to "+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(streamType, durationHint, mICallBack, null, |
| AudioService.IN_VOICE_COMM_FOCUS_ID, |
| "system" /* dump-friendly package name */); |
| } catch (RemoteException e) { |
| Log.e(TAG, "Can't call requestAudioFocusForCall() on AudioService due to "+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, AudioService.IN_VOICE_COMM_FOCUS_ID); |
| } catch (RemoteException e) { |
| Log.e(TAG, "Can't call abandonAudioFocusForCall() on AudioService due to "+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) { |
| int status = AUDIOFOCUS_REQUEST_FAILED; |
| unregisterAudioFocusListener(l); |
| IAudioService service = getService(); |
| try { |
| status = service.abandonAudioFocus(mAudioFocusDispatcher, |
| getIdForAudioFocusListener(l)); |
| } catch (RemoteException e) { |
| Log.e(TAG, "Can't call abandonAudioFocus() on AudioService due to "+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. |
| */ |
| public void registerMediaButtonEventReceiver(ComponentName eventReceiver) { |
| if (eventReceiver == null) { |
| return; |
| } |
| if (!eventReceiver.getPackageName().equals(mContext.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(mContext, |
| 0/*requestCode, ignored*/, mediaButtonIntent, 0/*flags*/); |
| registerMediaButtonIntent(pi, eventReceiver); |
| } |
| |
| /** |
| * @hide |
| * no-op if (pi == null) or (eventReceiver == null) |
| */ |
| public void registerMediaButtonIntent(PendingIntent pi, ComponentName eventReceiver) { |
| if ((pi == null) || (eventReceiver == null)) { |
| Log.e(TAG, "Cannot call registerMediaButtonIntent() with a null parameter"); |
| return; |
| } |
| IAudioService service = getService(); |
| try { |
| // pi != null |
| service.registerMediaButtonIntent(pi, eventReceiver); |
| } catch (RemoteException e) { |
| Log.e(TAG, "Dead object in registerMediaButtonIntent"+e); |
| } |
| } |
| |
| /** |
| * @hide |
| * Used internally by telephony package to register an intent receiver for ACTION_MEDIA_BUTTON. |
| * @param eventReceiver the component that will receive the media button key events, |
| * no-op if eventReceiver is null |
| */ |
| public void registerMediaButtonEventReceiverForCalls(ComponentName eventReceiver) { |
| if (eventReceiver == null) { |
| return; |
| } |
| IAudioService service = getService(); |
| try { |
| // eventReceiver != null |
| service.registerMediaButtonEventReceiverForCalls(eventReceiver); |
| } catch (RemoteException e) { |
| Log.e(TAG, "Dead object in registerMediaButtonEventReceiverForCalls", e); |
| } |
| } |
| |
| /** |
| * @hide |
| */ |
| public void unregisterMediaButtonEventReceiverForCalls() { |
| IAudioService service = getService(); |
| try { |
| service.unregisterMediaButtonEventReceiverForCalls(); |
| } catch (RemoteException e) { |
| Log.e(TAG, "Dead object in unregisterMediaButtonEventReceiverForCalls", e); |
| } |
| } |
| |
| /** |
| * Unregister the receiver of MEDIA_BUTTON intents. |
| * @param eventReceiver identifier of a {@link android.content.BroadcastReceiver} |
| * that was registered with {@link #registerMediaButtonEventReceiver(ComponentName)}. |
| */ |
| 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(mContext, |
| 0/*requestCode, ignored*/, mediaButtonIntent, 0/*flags*/); |
| unregisterMediaButtonIntent(pi, eventReceiver); |
| } |
| |
| /** |
| * @hide |
| */ |
| public void unregisterMediaButtonIntent(PendingIntent pi, ComponentName eventReceiver) { |
| IAudioService service = getService(); |
| try { |
| service.unregisterMediaButtonIntent(pi, eventReceiver); |
| } catch (RemoteException e) { |
| Log.e(TAG, "Dead object in unregisterMediaButtonIntent"+e); |
| } |
| } |
| |
| /** |
| * 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 |
| */ |
| public void registerRemoteControlClient(RemoteControlClient rcClient) { |
| if ((rcClient == null) || (rcClient.getRcMediaIntent() == null)) { |
| return; |
| } |
| IAudioService service = getService(); |
| try { |
| int rcseId = service.registerRemoteControlClient( |
| rcClient.getRcMediaIntent(), /* mediaIntent */ |
| rcClient.getIRemoteControlClient(),/* rcClient */ |
| // used to match media button event receiver and audio focus |
| mContext.getPackageName()); /* packageName */ |
| rcClient.setRcseId(rcseId); |
| } catch (RemoteException e) { |
| Log.e(TAG, "Dead object in registerRemoteControlClient"+e); |
| } |
| } |
| |
| /** |
| * 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) |
| */ |
| public void unregisterRemoteControlClient(RemoteControlClient rcClient) { |
| if ((rcClient == null) || (rcClient.getRcMediaIntent() == null)) { |
| return; |
| } |
| IAudioService service = getService(); |
| try { |
| service.unregisterRemoteControlClient(rcClient.getRcMediaIntent(), /* mediaIntent */ |
| rcClient.getIRemoteControlClient()); /* rcClient */ |
| } catch (RemoteException e) { |
| Log.e(TAG, "Dead object in unregisterRemoteControlClient"+e); |
| } |
| } |
| |
| /** |
| * @hide |
| * Registers a remote control display that will be sent information by remote control clients. |
| * @param rcd |
| */ |
| public void registerRemoteControlDisplay(IRemoteControlDisplay rcd) { |
| if (rcd == null) { |
| return; |
| } |
| IAudioService service = getService(); |
| try { |
| service.registerRemoteControlDisplay(rcd); |
| } 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); |
| } |
| } |
| |
| // FIXME remove because we are not using intents anymore between AudioService and RcDisplay |
| /** |
| * @hide |
| * Broadcast intent action indicating that the displays on the remote controls |
| * should be updated because a new remote control client is now active. If there is no |
| * {@link #EXTRA_REMOTE_CONTROL_CLIENT}, the remote control display should be cleared |
| * because there is no valid client to supply it with information. |
| * |
| * @see #EXTRA_REMOTE_CONTROL_CLIENT |
| */ |
| public static final String REMOTE_CONTROL_CLIENT_CHANGED = |
| "android.media.REMOTE_CONTROL_CLIENT_CHANGED"; |
| |
| // FIXME remove because we are not using intents anymore between AudioService and RcDisplay |
| /** |
| * @hide |
| * The IRemoteControlClientDispatcher monotonically increasing generation counter. |
| * |
| * @see #REMOTE_CONTROL_CLIENT_CHANGED_ACTION |
| */ |
| public static final String EXTRA_REMOTE_CONTROL_CLIENT_GENERATION = |
| "android.media.EXTRA_REMOTE_CONTROL_CLIENT_GENERATION"; |
| |
| // FIXME remove because we are not using intents anymore between AudioService and RcDisplay |
| /** |
| * @hide |
| * The name of the RemoteControlClient. |
| * This String is passed as the client name when calling methods from the |
| * IRemoteControlClientDispatcher interface. |
| * |
| * @see #REMOTE_CONTROL_CLIENT_CHANGED_ACTION |
| */ |
| public static final String EXTRA_REMOTE_CONTROL_CLIENT_NAME = |
| "android.media.EXTRA_REMOTE_CONTROL_CLIENT_NAME"; |
| |
| // FIXME remove because we are not using intents anymore between AudioService and RcDisplay |
| /** |
| * @hide |
| * The media button event receiver associated with the RemoteControlClient. |
| * The {@link android.content.ComponentName} value of the event receiver can be retrieved with |
| * {@link android.content.ComponentName#unflattenFromString(String)} |
| * |
| * @see #REMOTE_CONTROL_CLIENT_CHANGED_ACTION |
| */ |
| public static final String EXTRA_REMOTE_CONTROL_EVENT_RECEIVER = |
| "android.media.EXTRA_REMOTE_CONTROL_EVENT_RECEIVER"; |
| |
| // FIXME remove because we are not using intents anymore between AudioService and RcDisplay |
| /** |
| * @hide |
| * The flags describing what information has changed in the current remote control client. |
| * |
| * @see #REMOTE_CONTROL_CLIENT_CHANGED_ACTION |
| */ |
| public static final String EXTRA_REMOTE_CONTROL_CLIENT_INFO_CHANGED = |
| "android.media.EXTRA_REMOTE_CONTROL_CLIENT_INFO_CHANGED"; |
| |
| /** |
| * @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} |
| */ |
| 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 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 or HDMI */ |
| public static final int DEVICE_OUT_AUX_DIGITAL = AudioSystem.DEVICE_OUT_AUX_DIGITAL; |
| /** {@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} 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; |
| |
| /** |
| * 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_AUX_DIGITAL}, |
| * {@link #DEVICE_OUT_ANLG_DOCK_HEADSET}, |
| * {@link #DEVICE_OUT_DGTL_DOCK_HEADSET}. |
| * {@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 device, int state, String name) { |
| IAudioService service = getService(); |
| try { |
| service.setWiredDeviceConnectionState(device, state, name); |
| } catch (RemoteException e) { |
| Log.e(TAG, "Dead object in setWiredDeviceConnectionState "+e); |
| } |
| } |
| |
| /** |
| * Indicate A2DP sink connection state change. |
| * @param device Bluetooth device connected/disconnected |
| * @param state new connection state (BluetoothProfile.STATE_xxx) |
| * @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) { |
| IAudioService service = getService(); |
| int delay = 0; |
| try { |
| delay = service.setBluetoothA2dpDeviceConnectionState(device, state); |
| } catch (RemoteException e) { |
| Log.e(TAG, "Dead object in setBluetoothA2dpDeviceConnectionState "+e); |
| } finally { |
| 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"; |
| |
| /** |
| * 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 { |
| // null or unknown key |
| return null; |
| } |
| } |
| |
| } |