1/* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.media; 18 19 20/* IF YOU CHANGE ANY OF THE CONSTANTS IN THIS FILE, DO NOT FORGET 21 * TO UPDATE THE CORRESPONDING NATIVE GLUE AND AudioManager.java. 22 * THANK YOU FOR YOUR COOPERATION. 23 */ 24 25/** 26 * @hide 27 */ 28public class AudioSystem 29{ 30 /* These values must be kept in sync with AudioSystem.h */ 31 /* 32 * If these are modified, please also update Settings.System.VOLUME_SETTINGS 33 * and attrs.xml and AudioManager.java. 34 */ 35 /* The audio stream for phone calls */ 36 public static final int STREAM_VOICE_CALL = 0; 37 /* The audio stream for system sounds */ 38 public static final int STREAM_SYSTEM = 1; 39 /* The audio stream for the phone ring and message alerts */ 40 public static final int STREAM_RING = 2; 41 /* The audio stream for music playback */ 42 public static final int STREAM_MUSIC = 3; 43 /* The audio stream for alarms */ 44 public static final int STREAM_ALARM = 4; 45 /* The audio stream for notifications */ 46 public static final int STREAM_NOTIFICATION = 5; 47 /* @hide The audio stream for phone calls when connected on bluetooth */ 48 public static final int STREAM_BLUETOOTH_SCO = 6; 49 /* @hide The audio stream for enforced system sounds in certain countries (e.g camera in Japan) */ 50 public static final int STREAM_SYSTEM_ENFORCED = 7; 51 /* @hide The audio stream for DTMF tones */ 52 public static final int STREAM_DTMF = 8; 53 /* @hide The audio stream for text to speech (TTS) */ 54 public static final int STREAM_TTS = 9; 55 /** 56 * @deprecated Use {@link #numStreamTypes() instead} 57 */ 58 public static final int NUM_STREAMS = 5; 59 60 // Expose only the getter method publicly so we can change it in the future 61 private static final int NUM_STREAM_TYPES = 10; 62 public static final int getNumStreamTypes() { return NUM_STREAM_TYPES; } 63 64 /* 65 * Sets the microphone mute on or off. 66 * 67 * @param on set <var>true</var> to mute the microphone; 68 * <var>false</var> to turn mute off 69 * @return command completion status see AUDIO_STATUS_OK, see AUDIO_STATUS_ERROR 70 */ 71 public static native int muteMicrophone(boolean on); 72 73 /* 74 * Checks whether the microphone mute is on or off. 75 * 76 * @return true if microphone is muted, false if it's not 77 */ 78 public static native boolean isMicrophoneMuted(); 79 80 /* modes for setPhoneState, must match AudioSystem.h audio_mode */ 81 public static final int MODE_INVALID = -2; 82 public static final int MODE_CURRENT = -1; 83 public static final int MODE_NORMAL = 0; 84 public static final int MODE_RINGTONE = 1; 85 public static final int MODE_IN_CALL = 2; 86 public static final int MODE_IN_COMMUNICATION = 3; 87 public static final int NUM_MODES = 4; 88 89 90 /* Routing bits for the former setRouting/getRouting API */ 91 /** @deprecated */ 92 @Deprecated public static final int ROUTE_EARPIECE = (1 << 0); 93 /** @deprecated */ 94 @Deprecated public static final int ROUTE_SPEAKER = (1 << 1); 95 /** @deprecated use {@link #ROUTE_BLUETOOTH_SCO} */ 96 @Deprecated public static final int ROUTE_BLUETOOTH = (1 << 2); 97 /** @deprecated */ 98 @Deprecated public static final int ROUTE_BLUETOOTH_SCO = (1 << 2); 99 /** @deprecated */ 100 @Deprecated public static final int ROUTE_HEADSET = (1 << 3); 101 /** @deprecated */ 102 @Deprecated public static final int ROUTE_BLUETOOTH_A2DP = (1 << 4); 103 /** @deprecated */ 104 @Deprecated public static final int ROUTE_ALL = 0xFFFFFFFF; 105 106 /* 107 * Checks whether the specified stream type is active. 108 * 109 * return true if any track playing on this stream is active. 110 */ 111 public static native boolean isStreamActive(int stream, int inPastMs); 112 113 /* 114 * Checks whether the specified audio source is active. 115 * 116 * return true if any recorder using this source is currently recording 117 */ 118 public static native boolean isSourceActive(int source); 119 120 /* 121 * Sets a group generic audio configuration parameters. The use of these parameters 122 * are platform dependent, see libaudio 123 * 124 * param keyValuePairs list of parameters key value pairs in the form: 125 * key1=value1;key2=value2;... 126 */ 127 public static native int setParameters(String keyValuePairs); 128 129 /* 130 * Gets a group generic audio configuration parameters. The use of these parameters 131 * are platform dependent, see libaudio 132 * 133 * param keys list of parameters 134 * return value: list of parameters key value pairs in the form: 135 * key1=value1;key2=value2;... 136 */ 137 public static native String getParameters(String keys); 138 139 // These match the enum AudioError in frameworks/base/core/jni/android_media_AudioSystem.cpp 140 /* Command sucessful or Media server restarted. see ErrorCallback */ 141 public static final int AUDIO_STATUS_OK = 0; 142 /* Command failed or unspecified audio error. see ErrorCallback */ 143 public static final int AUDIO_STATUS_ERROR = 1; 144 /* Media server died. see ErrorCallback */ 145 public static final int AUDIO_STATUS_SERVER_DIED = 100; 146 147 private static ErrorCallback mErrorCallback; 148 149 /* 150 * Handles the audio error callback. 151 */ 152 public interface ErrorCallback 153 { 154 /* 155 * Callback for audio server errors. 156 * param error error code: 157 * - AUDIO_STATUS_OK 158 * - AUDIO_STATUS_SERVER_DIED 159 * - AUDIO_STATUS_ERROR 160 */ 161 void onError(int error); 162 }; 163 164 /* 165 * Registers a callback to be invoked when an error occurs. 166 * @param cb the callback to run 167 */ 168 public static void setErrorCallback(ErrorCallback cb) 169 { 170 synchronized (AudioSystem.class) { 171 mErrorCallback = cb; 172 } 173 // Calling a method on AudioFlinger here makes sure that we bind to IAudioFlinger 174 // binder interface death. Not doing that would result in not being notified of 175 // media_server process death if no other method is called on AudioSystem that reaches 176 // to AudioFlinger. 177 isMicrophoneMuted(); 178 } 179 180 private static void errorCallbackFromNative(int error) 181 { 182 ErrorCallback errorCallback = null; 183 synchronized (AudioSystem.class) { 184 if (mErrorCallback != null) { 185 errorCallback = mErrorCallback; 186 } 187 } 188 if (errorCallback != null) { 189 errorCallback.onError(error); 190 } 191 } 192 193 194 /* 195 * AudioPolicyService methods 196 */ 197 198 // 199 // audio device definitions: must be kept in sync with values in system/core/audio.h 200 // 201 202 // reserved bits 203 public static final int DEVICE_BIT_IN = 0x80000000; 204 public static final int DEVICE_BIT_DEFAULT = 0x40000000; 205 // output devices, be sure to update AudioManager.java also 206 public static final int DEVICE_OUT_EARPIECE = 0x1; 207 public static final int DEVICE_OUT_SPEAKER = 0x2; 208 public static final int DEVICE_OUT_WIRED_HEADSET = 0x4; 209 public static final int DEVICE_OUT_WIRED_HEADPHONE = 0x8; 210 public static final int DEVICE_OUT_BLUETOOTH_SCO = 0x10; 211 public static final int DEVICE_OUT_BLUETOOTH_SCO_HEADSET = 0x20; 212 public static final int DEVICE_OUT_BLUETOOTH_SCO_CARKIT = 0x40; 213 public static final int DEVICE_OUT_BLUETOOTH_A2DP = 0x80; 214 public static final int DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES = 0x100; 215 public static final int DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER = 0x200; 216 public static final int DEVICE_OUT_AUX_DIGITAL = 0x400; 217 public static final int DEVICE_OUT_ANLG_DOCK_HEADSET = 0x800; 218 public static final int DEVICE_OUT_DGTL_DOCK_HEADSET = 0x1000; 219 public static final int DEVICE_OUT_USB_ACCESSORY = 0x2000; 220 public static final int DEVICE_OUT_USB_DEVICE = 0x4000; 221 public static final int DEVICE_OUT_REMOTE_SUBMIX = 0x8000; 222 223 public static final int DEVICE_OUT_DEFAULT = DEVICE_BIT_DEFAULT; 224 225 public static final int DEVICE_OUT_ALL = (DEVICE_OUT_EARPIECE | 226 DEVICE_OUT_SPEAKER | 227 DEVICE_OUT_WIRED_HEADSET | 228 DEVICE_OUT_WIRED_HEADPHONE | 229 DEVICE_OUT_BLUETOOTH_SCO | 230 DEVICE_OUT_BLUETOOTH_SCO_HEADSET | 231 DEVICE_OUT_BLUETOOTH_SCO_CARKIT | 232 DEVICE_OUT_BLUETOOTH_A2DP | 233 DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES | 234 DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER | 235 DEVICE_OUT_AUX_DIGITAL | 236 DEVICE_OUT_ANLG_DOCK_HEADSET | 237 DEVICE_OUT_DGTL_DOCK_HEADSET | 238 DEVICE_OUT_USB_ACCESSORY | 239 DEVICE_OUT_USB_DEVICE | 240 DEVICE_OUT_REMOTE_SUBMIX | 241 DEVICE_OUT_DEFAULT); 242 public static final int DEVICE_OUT_ALL_A2DP = (DEVICE_OUT_BLUETOOTH_A2DP | 243 DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES | 244 DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER); 245 public static final int DEVICE_OUT_ALL_SCO = (DEVICE_OUT_BLUETOOTH_SCO | 246 DEVICE_OUT_BLUETOOTH_SCO_HEADSET | 247 DEVICE_OUT_BLUETOOTH_SCO_CARKIT); 248 public static final int DEVICE_OUT_ALL_USB = (DEVICE_OUT_USB_ACCESSORY | 249 DEVICE_OUT_USB_DEVICE); 250 251 // input devices 252 public static final int DEVICE_IN_COMMUNICATION = DEVICE_BIT_IN | 0x1; 253 public static final int DEVICE_IN_AMBIENT = DEVICE_BIT_IN | 0x2; 254 public static final int DEVICE_IN_BUILTIN_MIC = DEVICE_BIT_IN | 0x4; 255 public static final int DEVICE_IN_BLUETOOTH_SCO_HEADSET = DEVICE_BIT_IN | 0x8; 256 public static final int DEVICE_IN_WIRED_HEADSET = DEVICE_BIT_IN | 0x10; 257 public static final int DEVICE_IN_AUX_DIGITAL = DEVICE_BIT_IN | 0x20; 258 public static final int DEVICE_IN_VOICE_CALL = DEVICE_BIT_IN | 0x40; 259 public static final int DEVICE_IN_BACK_MIC = DEVICE_BIT_IN | 0x80; 260 public static final int DEVICE_IN_REMOTE_SUBMIX = DEVICE_BIT_IN | 0x100; 261 public static final int DEVICE_IN_ANLG_DOCK_HEADSET = DEVICE_BIT_IN | 0x200; 262 public static final int DEVICE_IN_DGTL_DOCK_HEADSET = DEVICE_BIT_IN | 0x400; 263 public static final int DEVICE_IN_USB_ACCESSORY = DEVICE_BIT_IN | 0x800; 264 public static final int DEVICE_IN_USB_DEVICE = DEVICE_BIT_IN | 0x1000; 265 public static final int DEVICE_IN_DEFAULT = DEVICE_BIT_IN | DEVICE_BIT_DEFAULT; 266 267 public static final int DEVICE_IN_ALL = (DEVICE_IN_COMMUNICATION | 268 DEVICE_IN_AMBIENT | 269 DEVICE_IN_BUILTIN_MIC | 270 DEVICE_IN_BLUETOOTH_SCO_HEADSET | 271 DEVICE_IN_WIRED_HEADSET | 272 DEVICE_IN_AUX_DIGITAL | 273 DEVICE_IN_VOICE_CALL | 274 DEVICE_IN_BACK_MIC | 275 DEVICE_IN_REMOTE_SUBMIX | 276 DEVICE_IN_ANLG_DOCK_HEADSET | 277 DEVICE_IN_DGTL_DOCK_HEADSET | 278 DEVICE_IN_USB_ACCESSORY | 279 DEVICE_IN_USB_DEVICE | 280 DEVICE_IN_DEFAULT); 281 public static final int DEVICE_IN_ALL_SCO = DEVICE_IN_BLUETOOTH_SCO_HEADSET; 282 283 // device states, must match AudioSystem::device_connection_state 284 public static final int DEVICE_STATE_UNAVAILABLE = 0; 285 public static final int DEVICE_STATE_AVAILABLE = 1; 286 private static final int NUM_DEVICE_STATES = 1; 287 288 public static final String DEVICE_OUT_EARPIECE_NAME = "earpiece"; 289 public static final String DEVICE_OUT_SPEAKER_NAME = "speaker"; 290 public static final String DEVICE_OUT_WIRED_HEADSET_NAME = "headset"; 291 public static final String DEVICE_OUT_WIRED_HEADPHONE_NAME = "headphone"; 292 public static final String DEVICE_OUT_BLUETOOTH_SCO_NAME = "bt_sco"; 293 public static final String DEVICE_OUT_BLUETOOTH_SCO_HEADSET_NAME = "bt_sco_hs"; 294 public static final String DEVICE_OUT_BLUETOOTH_SCO_CARKIT_NAME = "bt_sco_carkit"; 295 public static final String DEVICE_OUT_BLUETOOTH_A2DP_NAME = "bt_a2dp"; 296 public static final String DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES_NAME = "bt_a2dp_hp"; 297 public static final String DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER_NAME = "bt_a2dp_spk"; 298 public static final String DEVICE_OUT_AUX_DIGITAL_NAME = "aux_digital"; 299 public static final String DEVICE_OUT_ANLG_DOCK_HEADSET_NAME = "analog_dock"; 300 public static final String DEVICE_OUT_DGTL_DOCK_HEADSET_NAME = "digital_dock"; 301 public static final String DEVICE_OUT_USB_ACCESSORY_NAME = "usb_accessory"; 302 public static final String DEVICE_OUT_USB_DEVICE_NAME = "usb_device"; 303 public static final String DEVICE_OUT_REMOTE_SUBMIX_NAME = "remote_submix"; 304 305 public static String getDeviceName(int device) 306 { 307 switch(device) { 308 case DEVICE_OUT_EARPIECE: 309 return DEVICE_OUT_EARPIECE_NAME; 310 case DEVICE_OUT_SPEAKER: 311 return DEVICE_OUT_SPEAKER_NAME; 312 case DEVICE_OUT_WIRED_HEADSET: 313 return DEVICE_OUT_WIRED_HEADSET_NAME; 314 case DEVICE_OUT_WIRED_HEADPHONE: 315 return DEVICE_OUT_WIRED_HEADPHONE_NAME; 316 case DEVICE_OUT_BLUETOOTH_SCO: 317 return DEVICE_OUT_BLUETOOTH_SCO_NAME; 318 case DEVICE_OUT_BLUETOOTH_SCO_HEADSET: 319 return DEVICE_OUT_BLUETOOTH_SCO_HEADSET_NAME; 320 case DEVICE_OUT_BLUETOOTH_SCO_CARKIT: 321 return DEVICE_OUT_BLUETOOTH_SCO_CARKIT_NAME; 322 case DEVICE_OUT_BLUETOOTH_A2DP: 323 return DEVICE_OUT_BLUETOOTH_A2DP_NAME; 324 case DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES: 325 return DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES_NAME; 326 case DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER: 327 return DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER_NAME; 328 case DEVICE_OUT_AUX_DIGITAL: 329 return DEVICE_OUT_AUX_DIGITAL_NAME; 330 case DEVICE_OUT_ANLG_DOCK_HEADSET: 331 return DEVICE_OUT_ANLG_DOCK_HEADSET_NAME; 332 case DEVICE_OUT_DGTL_DOCK_HEADSET: 333 return DEVICE_OUT_DGTL_DOCK_HEADSET_NAME; 334 case DEVICE_OUT_USB_ACCESSORY: 335 return DEVICE_OUT_USB_ACCESSORY_NAME; 336 case DEVICE_OUT_USB_DEVICE: 337 return DEVICE_OUT_USB_DEVICE_NAME; 338 case DEVICE_OUT_REMOTE_SUBMIX: 339 return DEVICE_OUT_REMOTE_SUBMIX_NAME; 340 case DEVICE_OUT_DEFAULT: 341 default: 342 return ""; 343 } 344 } 345 346 // phone state, match audio_mode??? 347 public static final int PHONE_STATE_OFFCALL = 0; 348 public static final int PHONE_STATE_RINGING = 1; 349 public static final int PHONE_STATE_INCALL = 2; 350 351 // device categories config for setForceUse, must match AudioSystem::forced_config 352 public static final int FORCE_NONE = 0; 353 public static final int FORCE_SPEAKER = 1; 354 public static final int FORCE_HEADPHONES = 2; 355 public static final int FORCE_BT_SCO = 3; 356 public static final int FORCE_BT_A2DP = 4; 357 public static final int FORCE_WIRED_ACCESSORY = 5; 358 public static final int FORCE_BT_CAR_DOCK = 6; 359 public static final int FORCE_BT_DESK_DOCK = 7; 360 public static final int FORCE_ANALOG_DOCK = 8; 361 public static final int FORCE_DIGITAL_DOCK = 9; 362 public static final int FORCE_NO_BT_A2DP = 10; 363 public static final int FORCE_SYSTEM_ENFORCED = 11; 364 private static final int NUM_FORCE_CONFIG = 12; 365 public static final int FORCE_DEFAULT = FORCE_NONE; 366 367 // usage for setForceUse, must match AudioSystem::force_use 368 public static final int FOR_COMMUNICATION = 0; 369 public static final int FOR_MEDIA = 1; 370 public static final int FOR_RECORD = 2; 371 public static final int FOR_DOCK = 3; 372 public static final int FOR_SYSTEM = 4; 373 private static final int NUM_FORCE_USE = 5; 374 375 // usage for AudioRecord.startRecordingSync(), must match AudioSystem::sync_event_t 376 public static final int SYNC_EVENT_NONE = 0; 377 public static final int SYNC_EVENT_PRESENTATION_COMPLETE = 1; 378 379 public static native int setDeviceConnectionState(int device, int state, String device_address); 380 public static native int getDeviceConnectionState(int device, String device_address); 381 public static native int setPhoneState(int state); 382 public static native int setForceUse(int usage, int config); 383 public static native int getForceUse(int usage); 384 public static native int initStreamVolume(int stream, int indexMin, int indexMax); 385 public static native int setStreamVolumeIndex(int stream, int index, int device); 386 public static native int getStreamVolumeIndex(int stream, int device); 387 public static native int setMasterVolume(float value); 388 public static native float getMasterVolume(); 389 public static native int setMasterMute(boolean mute); 390 public static native boolean getMasterMute(); 391 public static native int getDevicesForStream(int stream); 392 393 // helpers for android.media.AudioManager.getProperty(), see description there for meaning 394 public static native int getPrimaryOutputSamplingRate(); 395 public static native int getPrimaryOutputFrameCount(); 396 397} 398