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 /* FIXME: Need to finalize this and correlate with native layer */ 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 * Sets a group generic audio configuration parameters. The use of these parameters 115 * are platform dependent, see libaudio 116 * 117 * param keyValuePairs list of parameters key value pairs in the form: 118 * key1=value1;key2=value2;... 119 */ 120 public static native int setParameters(String keyValuePairs); 121 122 /* 123 * Gets a group generic audio configuration parameters. The use of these parameters 124 * are platform dependent, see libaudio 125 * 126 * param keys list of parameters 127 * return value: list of parameters key value pairs in the form: 128 * key1=value1;key2=value2;... 129 */ 130 public static native String getParameters(String keys); 131 132 // These match the enum AudioError in frameworks/base/core/jni/android_media_AudioSystem.cpp 133 /* Command sucessful or Media server restarted. see ErrorCallback */ 134 public static final int AUDIO_STATUS_OK = 0; 135 /* Command failed or unspecified audio error. see ErrorCallback */ 136 public static final int AUDIO_STATUS_ERROR = 1; 137 /* Media server died. see ErrorCallback */ 138 public static final int AUDIO_STATUS_SERVER_DIED = 100; 139 140 private static ErrorCallback mErrorCallback; 141 142 /* 143 * Handles the audio error callback. 144 */ 145 public interface ErrorCallback 146 { 147 /* 148 * Callback for audio server errors. 149 * param error error code: 150 * - AUDIO_STATUS_OK 151 * - AUDIO_STATUS_SERVER_DIED 152 * - AUDIO_STATUS_ERROR 153 */ 154 void onError(int error); 155 }; 156 157 /* 158 * Registers a callback to be invoked when an error occurs. 159 * @param cb the callback to run 160 */ 161 public static void setErrorCallback(ErrorCallback cb) 162 { 163 synchronized (AudioSystem.class) { 164 mErrorCallback = cb; 165 } 166 // Calling a method on AudioFlinger here makes sure that we bind to IAudioFlinger 167 // binder interface death. Not doing that would result in not being notified of 168 // media_server process death if no other method is called on AudioSystem that reaches 169 // to AudioFlinger. 170 isMicrophoneMuted(); 171 } 172 173 private static void errorCallbackFromNative(int error) 174 { 175 ErrorCallback errorCallback = null; 176 synchronized (AudioSystem.class) { 177 if (mErrorCallback != null) { 178 errorCallback = mErrorCallback; 179 } 180 } 181 if (errorCallback != null) { 182 errorCallback.onError(error); 183 } 184 } 185 186 /* 187 * AudioPolicyService methods 188 */ 189 190 // output devices, be sure to update AudioManager.java also 191 public static final int DEVICE_OUT_EARPIECE = 0x1; 192 public static final int DEVICE_OUT_SPEAKER = 0x2; 193 public static final int DEVICE_OUT_WIRED_HEADSET = 0x4; 194 public static final int DEVICE_OUT_WIRED_HEADPHONE = 0x8; 195 public static final int DEVICE_OUT_BLUETOOTH_SCO = 0x10; 196 public static final int DEVICE_OUT_BLUETOOTH_SCO_HEADSET = 0x20; 197 public static final int DEVICE_OUT_BLUETOOTH_SCO_CARKIT = 0x40; 198 public static final int DEVICE_OUT_BLUETOOTH_A2DP = 0x80; 199 public static final int DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES = 0x100; 200 public static final int DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER = 0x200; 201 public static final int DEVICE_OUT_AUX_DIGITAL = 0x400; 202 public static final int DEVICE_OUT_ANLG_DOCK_HEADSET = 0x800; 203 public static final int DEVICE_OUT_DGTL_DOCK_HEADSET = 0x1000; 204 public static final int DEVICE_OUT_DEFAULT = 0x8000; 205 // input devices 206 public static final int DEVICE_IN_COMMUNICATION = 0x10000; 207 public static final int DEVICE_IN_AMBIENT = 0x20000; 208 public static final int DEVICE_IN_BUILTIN_MIC1 = 0x40000; 209 public static final int DEVICE_IN_BUILTIN_MIC2 = 0x80000; 210 public static final int DEVICE_IN_MIC_ARRAY = 0x100000; 211 public static final int DEVICE_IN_BLUETOOTH_SCO_HEADSET = 0x200000; 212 public static final int DEVICE_IN_WIRED_HEADSET = 0x400000; 213 public static final int DEVICE_IN_AUX_DIGITAL = 0x800000; 214 public static final int DEVICE_IN_DEFAULT = 0x80000000; 215 216 // device states, must match AudioSystem::device_connection_state 217 public static final int DEVICE_STATE_UNAVAILABLE = 0; 218 public static final int DEVICE_STATE_AVAILABLE = 1; 219 private static final int NUM_DEVICE_STATES = 1; 220 221 // phone state, match audio_mode??? 222 public static final int PHONE_STATE_OFFCALL = 0; 223 public static final int PHONE_STATE_RINGING = 1; 224 public static final int PHONE_STATE_INCALL = 2; 225 226 // device categories config for setForceUse, must match AudioSystem::forced_config 227 public static final int FORCE_NONE = 0; 228 public static final int FORCE_SPEAKER = 1; 229 public static final int FORCE_HEADPHONES = 2; 230 public static final int FORCE_BT_SCO = 3; 231 public static final int FORCE_BT_A2DP = 4; 232 public static final int FORCE_WIRED_ACCESSORY = 5; 233 public static final int FORCE_BT_CAR_DOCK = 6; 234 public static final int FORCE_BT_DESK_DOCK = 7; 235 public static final int FORCE_ANALOG_DOCK = 8; 236 public static final int FORCE_DIGITAL_DOCK = 9; 237 private static final int NUM_FORCE_CONFIG = 10; 238 public static final int FORCE_DEFAULT = FORCE_NONE; 239 240 // usage for setForceUse, must match AudioSystem::force_use 241 public static final int FOR_COMMUNICATION = 0; 242 public static final int FOR_MEDIA = 1; 243 public static final int FOR_RECORD = 2; 244 public static final int FOR_DOCK = 3; 245 private static final int NUM_FORCE_USE = 4; 246 247 public static native int setDeviceConnectionState(int device, int state, String device_address); 248 public static native int getDeviceConnectionState(int device, String device_address); 249 public static native int setPhoneState(int state); 250 public static native int setRingerMode(int mode, int mask); 251 public static native int setForceUse(int usage, int config); 252 public static native int getForceUse(int usage); 253 public static native int initStreamVolume(int stream, int indexMin, int indexMax); 254 public static native int setStreamVolumeIndex(int stream, int index); 255 public static native int getStreamVolumeIndex(int stream); 256 public static native int getDevicesForStream(int stream); 257} 258