Dima Zavin | e8e4be5 | 2011-05-12 10:25:33 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2011 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 | |
| 17 | |
| 18 | #ifndef ANDROID_AUDIO_CORE_H |
| 19 | #define ANDROID_AUDIO_CORE_H |
| 20 | |
| 21 | #include <stdbool.h> |
| 22 | #include <stdint.h> |
| 23 | #include <sys/cdefs.h> |
| 24 | #include <sys/types.h> |
| 25 | |
| 26 | #include <cutils/bitops.h> |
| 27 | |
| 28 | __BEGIN_DECLS |
| 29 | |
| 30 | /* The enums were moved here mostly from |
| 31 | * frameworks/base/include/media/AudioSystem.h |
| 32 | */ |
| 33 | |
| 34 | typedef int audio_io_handle_t; |
| 35 | |
| 36 | /* Audio stream types */ |
| 37 | typedef enum { |
| 38 | AUDIO_STREAM_DEFAULT = -1, |
| 39 | AUDIO_STREAM_VOICE_CALL = 0, |
| 40 | AUDIO_STREAM_SYSTEM = 1, |
| 41 | AUDIO_STREAM_RING = 2, |
| 42 | AUDIO_STREAM_MUSIC = 3, |
| 43 | AUDIO_STREAM_ALARM = 4, |
| 44 | AUDIO_STREAM_NOTIFICATION = 5, |
| 45 | AUDIO_STREAM_BLUETOOTH_SCO = 6, |
| 46 | AUDIO_STREAM_ENFORCED_AUDIBLE = 7, /* Sounds that cannot be muted by user and must be routed to speaker */ |
| 47 | AUDIO_STREAM_DTMF = 8, |
| 48 | AUDIO_STREAM_TTS = 9, |
| 49 | |
| 50 | AUDIO_STREAM_CNT, |
| 51 | AUDIO_STREAM_MAX = AUDIO_STREAM_CNT - 1, |
| 52 | } audio_stream_type_t; |
| 53 | |
| 54 | /* Do not change these values without updating their counterparts |
| 55 | * in media/java/android/media/MediaRecorder.java! |
| 56 | */ |
| 57 | typedef enum { |
| 58 | AUDIO_SOURCE_DEFAULT = 0, |
| 59 | AUDIO_SOURCE_MIC = 1, |
| 60 | AUDIO_SOURCE_VOICE_UPLINK = 2, |
| 61 | AUDIO_SOURCE_VOICE_DOWNLINK = 3, |
| 62 | AUDIO_SOURCE_VOICE_CALL = 4, |
| 63 | AUDIO_SOURCE_CAMCORDER = 5, |
| 64 | AUDIO_SOURCE_VOICE_RECOGNITION = 6, |
| 65 | AUDIO_SOURCE_VOICE_COMMUNICATION = 7, |
| 66 | |
| 67 | AUDIO_SOURCE_CNT, |
| 68 | AUDIO_SOURCE_MAX = AUDIO_SOURCE_CNT - 1, |
| 69 | } audio_source_t; |
| 70 | |
| 71 | /* special audio session values |
| 72 | * (XXX: should this be living in the audio effects land?) |
| 73 | */ |
| 74 | typedef enum { |
| 75 | /* session for effects attached to a particular output stream |
| 76 | * (value must be less than 0) |
| 77 | */ |
| 78 | AUDIO_SESSION_OUTPUT_STAGE = -1, |
| 79 | |
| 80 | /* session for effects applied to output mix. These effects can |
| 81 | * be moved by audio policy manager to another output stream |
| 82 | * (value must be 0) |
| 83 | */ |
| 84 | AUDIO_SESSION_OUTPUT_MIX = 0, |
| 85 | } audio_session_t; |
| 86 | |
| 87 | /* Audio sub formats (see enum audio_format). */ |
| 88 | |
| 89 | /* PCM sub formats */ |
| 90 | typedef enum { |
Eric Laurent | 9714b27 | 2011-05-26 13:52:47 -0700 | [diff] [blame^] | 91 | AUDIO_FORMAT_PCM_SUB_16_BIT = 0x1, /* DO NOT CHANGE - PCM signed 16 bits */ |
| 92 | AUDIO_FORMAT_PCM_SUB_8_BIT = 0x2, /* DO NOT CHANGE - PCM unsigned 8 bits */ |
| 93 | AUDIO_FORMAT_PCM_SUB_32_BIT = 0x3, /* PCM signed .31 fixed point */ |
| 94 | AUDIO_FORMAT_PCM_SUB_8_24_BIT = 0x4, /* PCM signed 7.24 fixed point */ |
Dima Zavin | e8e4be5 | 2011-05-12 10:25:33 -0700 | [diff] [blame] | 95 | } audio_format_pcm_sub_fmt_t; |
| 96 | |
| 97 | /* MP3 sub format field definition : can use 11 LSBs in the same way as MP3 |
| 98 | * frame header to specify bit rate, stereo mode, version... |
| 99 | */ |
| 100 | typedef enum { |
| 101 | AUDIO_FORMAT_MP3_SUB_NONE = 0x0, |
| 102 | } audio_format_mp3_sub_fmt_t; |
| 103 | |
| 104 | /* AMR NB/WB sub format field definition: specify frame block interleaving, |
| 105 | * bandwidth efficient or octet aligned, encoding mode for recording... |
| 106 | */ |
| 107 | typedef enum { |
| 108 | AUDIO_FORMAT_AMR_SUB_NONE = 0x0, |
| 109 | } audio_format_amr_sub_fmt_t; |
| 110 | |
| 111 | /* AAC sub format field definition: specify profile or bitrate for recording... */ |
| 112 | typedef enum { |
| 113 | AUDIO_FORMAT_AAC_SUB_NONE = 0x0, |
| 114 | } audio_format_aac_sub_fmt_t; |
| 115 | |
| 116 | /* VORBIS sub format field definition: specify quality for recording... */ |
| 117 | typedef enum { |
| 118 | AUDIO_FORMAT_VORBIS_SUB_NONE = 0x0, |
| 119 | } audio_format_vorbis_sub_fmt_t; |
| 120 | |
| 121 | /* Audio format consists in a main format field (upper 8 bits) and a sub format |
| 122 | * field (lower 24 bits). |
| 123 | * |
| 124 | * The main format indicates the main codec type. The sub format field |
| 125 | * indicates options and parameters for each format. The sub format is mainly |
| 126 | * used for record to indicate for instance the requested bitrate or profile. |
| 127 | * It can also be used for certain formats to give informations not present in |
| 128 | * the encoded audio stream (e.g. octet alignement for AMR). |
| 129 | */ |
| 130 | typedef enum { |
| 131 | AUDIO_FORMAT_INVALID = 0xFFFFFFFFUL, |
| 132 | AUDIO_FORMAT_DEFAULT = 0, |
| 133 | AUDIO_FORMAT_PCM = 0x00000000UL, /* DO NOT CHANGE */ |
| 134 | AUDIO_FORMAT_MP3 = 0x01000000UL, |
| 135 | AUDIO_FORMAT_AMR_NB = 0x02000000UL, |
| 136 | AUDIO_FORMAT_AMR_WB = 0x03000000UL, |
| 137 | AUDIO_FORMAT_AAC = 0x04000000UL, |
| 138 | AUDIO_FORMAT_HE_AAC_V1 = 0x05000000UL, |
| 139 | AUDIO_FORMAT_HE_AAC_V2 = 0x06000000UL, |
| 140 | AUDIO_FORMAT_VORBIS = 0x07000000UL, |
| 141 | AUDIO_FORMAT_MAIN_MASK = 0xFF000000UL, |
| 142 | AUDIO_FORMAT_SUB_MASK = 0x00FFFFFFUL, |
| 143 | |
| 144 | /* Aliases */ |
| 145 | AUDIO_FORMAT_PCM_16_BIT = (AUDIO_FORMAT_PCM | |
| 146 | AUDIO_FORMAT_PCM_SUB_16_BIT), |
| 147 | AUDIO_FORMAT_PCM_8_BIT = (AUDIO_FORMAT_PCM | |
| 148 | AUDIO_FORMAT_PCM_SUB_8_BIT), |
Eric Laurent | 9714b27 | 2011-05-26 13:52:47 -0700 | [diff] [blame^] | 149 | AUDIO_FORMAT_PCM_32_BIT = (AUDIO_FORMAT_PCM | |
| 150 | AUDIO_FORMAT_PCM_SUB_32_BIT), |
| 151 | AUDIO_FORMAT_PCM_8_24_BIT = (AUDIO_FORMAT_PCM | |
| 152 | AUDIO_FORMAT_PCM_SUB_8_24_BIT), |
Dima Zavin | e8e4be5 | 2011-05-12 10:25:33 -0700 | [diff] [blame] | 153 | } audio_format_t; |
| 154 | |
| 155 | /* Channel mask definitions must be kept in sync with JAVA values in |
| 156 | * frameworks/base/media/java/android/media/AudioFormat.java */ |
| 157 | typedef enum { |
| 158 | /* output channels */ |
| 159 | AUDIO_CHANNEL_OUT_FRONT_LEFT = 0x4, |
| 160 | AUDIO_CHANNEL_OUT_FRONT_RIGHT = 0x8, |
| 161 | AUDIO_CHANNEL_OUT_FRONT_CENTER = 0x10, |
| 162 | AUDIO_CHANNEL_OUT_LOW_FREQUENCY = 0x20, |
| 163 | AUDIO_CHANNEL_OUT_BACK_LEFT = 0x40, |
| 164 | AUDIO_CHANNEL_OUT_BACK_RIGHT = 0x80, |
| 165 | AUDIO_CHANNEL_OUT_FRONT_LEFT_OF_CENTER = 0x100, |
| 166 | AUDIO_CHANNEL_OUT_FRONT_RIGHT_OF_CENTER = 0x200, |
| 167 | AUDIO_CHANNEL_OUT_BACK_CENTER = 0x400, |
| 168 | |
| 169 | AUDIO_CHANNEL_OUT_MONO = AUDIO_CHANNEL_OUT_FRONT_LEFT, |
| 170 | AUDIO_CHANNEL_OUT_STEREO = (AUDIO_CHANNEL_OUT_FRONT_LEFT | |
| 171 | AUDIO_CHANNEL_OUT_FRONT_RIGHT), |
| 172 | AUDIO_CHANNEL_OUT_QUAD = (AUDIO_CHANNEL_OUT_FRONT_LEFT | |
| 173 | AUDIO_CHANNEL_OUT_FRONT_RIGHT | |
| 174 | AUDIO_CHANNEL_OUT_BACK_LEFT | |
| 175 | AUDIO_CHANNEL_OUT_BACK_RIGHT), |
| 176 | AUDIO_CHANNEL_OUT_SURROUND = (AUDIO_CHANNEL_OUT_FRONT_LEFT | |
| 177 | AUDIO_CHANNEL_OUT_FRONT_RIGHT | |
| 178 | AUDIO_CHANNEL_OUT_FRONT_CENTER | |
| 179 | AUDIO_CHANNEL_OUT_BACK_CENTER), |
| 180 | AUDIO_CHANNEL_OUT_5POINT1 = (AUDIO_CHANNEL_OUT_FRONT_LEFT | |
| 181 | AUDIO_CHANNEL_OUT_FRONT_RIGHT | |
| 182 | AUDIO_CHANNEL_OUT_FRONT_CENTER | |
| 183 | AUDIO_CHANNEL_OUT_LOW_FREQUENCY | |
| 184 | AUDIO_CHANNEL_OUT_BACK_LEFT | |
| 185 | AUDIO_CHANNEL_OUT_BACK_RIGHT), |
| 186 | AUDIO_CHANNEL_OUT_7POINT1 = (AUDIO_CHANNEL_OUT_FRONT_LEFT | |
| 187 | AUDIO_CHANNEL_OUT_FRONT_RIGHT | |
| 188 | AUDIO_CHANNEL_OUT_FRONT_CENTER | |
| 189 | AUDIO_CHANNEL_OUT_LOW_FREQUENCY | |
| 190 | AUDIO_CHANNEL_OUT_BACK_LEFT | |
| 191 | AUDIO_CHANNEL_OUT_BACK_RIGHT | |
| 192 | AUDIO_CHANNEL_OUT_FRONT_LEFT_OF_CENTER | |
| 193 | AUDIO_CHANNEL_OUT_FRONT_RIGHT_OF_CENTER), |
| 194 | AUDIO_CHANNEL_OUT_ALL = (AUDIO_CHANNEL_OUT_FRONT_LEFT | |
| 195 | AUDIO_CHANNEL_OUT_FRONT_RIGHT | |
| 196 | AUDIO_CHANNEL_OUT_FRONT_CENTER | |
| 197 | AUDIO_CHANNEL_OUT_LOW_FREQUENCY | |
| 198 | AUDIO_CHANNEL_OUT_BACK_LEFT | |
| 199 | AUDIO_CHANNEL_OUT_BACK_RIGHT | |
| 200 | AUDIO_CHANNEL_OUT_FRONT_LEFT_OF_CENTER | |
| 201 | AUDIO_CHANNEL_OUT_FRONT_RIGHT_OF_CENTER | |
| 202 | AUDIO_CHANNEL_OUT_BACK_CENTER), |
| 203 | |
| 204 | /* input channels */ |
| 205 | AUDIO_CHANNEL_IN_LEFT = 0x4, |
| 206 | AUDIO_CHANNEL_IN_RIGHT = 0x8, |
| 207 | AUDIO_CHANNEL_IN_FRONT = 0x10, |
| 208 | AUDIO_CHANNEL_IN_BACK = 0x20, |
| 209 | AUDIO_CHANNEL_IN_LEFT_PROCESSED = 0x40, |
| 210 | AUDIO_CHANNEL_IN_RIGHT_PROCESSED = 0x80, |
| 211 | AUDIO_CHANNEL_IN_FRONT_PROCESSED = 0x100, |
| 212 | AUDIO_CHANNEL_IN_BACK_PROCESSED = 0x200, |
| 213 | AUDIO_CHANNEL_IN_PRESSURE = 0x400, |
| 214 | AUDIO_CHANNEL_IN_X_AXIS = 0x800, |
| 215 | AUDIO_CHANNEL_IN_Y_AXIS = 0x1000, |
| 216 | AUDIO_CHANNEL_IN_Z_AXIS = 0x2000, |
| 217 | AUDIO_CHANNEL_IN_VOICE_UPLINK = 0x4000, |
| 218 | AUDIO_CHANNEL_IN_VOICE_DNLINK = 0x8000, |
| 219 | |
| 220 | AUDIO_CHANNEL_IN_MONO = AUDIO_CHANNEL_IN_FRONT, |
| 221 | AUDIO_CHANNEL_IN_STEREO = (AUDIO_CHANNEL_IN_LEFT | AUDIO_CHANNEL_IN_RIGHT), |
| 222 | AUDIO_CHANNEL_IN_ALL = (AUDIO_CHANNEL_IN_LEFT | |
| 223 | AUDIO_CHANNEL_IN_RIGHT | |
| 224 | AUDIO_CHANNEL_IN_FRONT | |
| 225 | AUDIO_CHANNEL_IN_BACK| |
| 226 | AUDIO_CHANNEL_IN_LEFT_PROCESSED | |
| 227 | AUDIO_CHANNEL_IN_RIGHT_PROCESSED | |
| 228 | AUDIO_CHANNEL_IN_FRONT_PROCESSED | |
| 229 | AUDIO_CHANNEL_IN_BACK_PROCESSED| |
| 230 | AUDIO_CHANNEL_IN_PRESSURE | |
| 231 | AUDIO_CHANNEL_IN_X_AXIS | |
| 232 | AUDIO_CHANNEL_IN_Y_AXIS | |
| 233 | AUDIO_CHANNEL_IN_Z_AXIS | |
| 234 | AUDIO_CHANNEL_IN_VOICE_UPLINK | |
| 235 | AUDIO_CHANNEL_IN_VOICE_DNLINK), |
| 236 | } audio_channels_t; |
| 237 | |
| 238 | typedef enum { |
| 239 | AUDIO_MODE_INVALID = -2, |
| 240 | AUDIO_MODE_CURRENT = -1, |
| 241 | AUDIO_MODE_NORMAL = 0, |
| 242 | AUDIO_MODE_RINGTONE = 1, |
| 243 | AUDIO_MODE_IN_CALL = 2, |
| 244 | AUDIO_MODE_IN_COMMUNICATION = 3, |
| 245 | |
| 246 | AUDIO_MODE_CNT, |
| 247 | AUDIO_MODE_MAX = AUDIO_MODE_CNT - 1, |
| 248 | } audio_mode_t; |
| 249 | |
| 250 | typedef enum { |
| 251 | AUDIO_IN_ACOUSTICS_AGC_ENABLE = 0x0001, |
| 252 | AUDIO_IN_ACOUSTICS_AGC_DISABLE = 0, |
| 253 | AUDIO_IN_ACOUSTICS_NS_ENABLE = 0x0002, |
| 254 | AUDIO_IN_ACOUSTICS_NS_DISABLE = 0, |
| 255 | AUDIO_IN_ACOUSTICS_TX_IIR_ENABLE = 0x0004, |
| 256 | AUDIO_IN_ACOUSTICS_TX_DISABLE = 0, |
| 257 | } audio_in_acoustics_t; |
| 258 | |
| 259 | typedef enum { |
| 260 | /* output devices */ |
| 261 | AUDIO_DEVICE_OUT_EARPIECE = 0x1, |
| 262 | AUDIO_DEVICE_OUT_SPEAKER = 0x2, |
| 263 | AUDIO_DEVICE_OUT_WIRED_HEADSET = 0x4, |
| 264 | AUDIO_DEVICE_OUT_WIRED_HEADPHONE = 0x8, |
| 265 | AUDIO_DEVICE_OUT_BLUETOOTH_SCO = 0x10, |
| 266 | AUDIO_DEVICE_OUT_BLUETOOTH_SCO_HEADSET = 0x20, |
| 267 | AUDIO_DEVICE_OUT_BLUETOOTH_SCO_CARKIT = 0x40, |
| 268 | AUDIO_DEVICE_OUT_BLUETOOTH_A2DP = 0x80, |
| 269 | AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES = 0x100, |
| 270 | AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER = 0x200, |
| 271 | AUDIO_DEVICE_OUT_AUX_DIGITAL = 0x400, |
| 272 | AUDIO_DEVICE_OUT_ANLG_DOCK_HEADSET = 0x800, |
| 273 | AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET = 0x1000, |
| 274 | AUDIO_DEVICE_OUT_DEFAULT = 0x8000, |
| 275 | AUDIO_DEVICE_OUT_ALL = (AUDIO_DEVICE_OUT_EARPIECE | |
| 276 | AUDIO_DEVICE_OUT_SPEAKER | |
| 277 | AUDIO_DEVICE_OUT_WIRED_HEADSET | |
| 278 | AUDIO_DEVICE_OUT_WIRED_HEADPHONE | |
| 279 | AUDIO_DEVICE_OUT_BLUETOOTH_SCO | |
| 280 | AUDIO_DEVICE_OUT_BLUETOOTH_SCO_HEADSET | |
| 281 | AUDIO_DEVICE_OUT_BLUETOOTH_SCO_CARKIT | |
| 282 | AUDIO_DEVICE_OUT_BLUETOOTH_A2DP | |
| 283 | AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES | |
| 284 | AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER | |
| 285 | AUDIO_DEVICE_OUT_AUX_DIGITAL | |
| 286 | AUDIO_DEVICE_OUT_ANLG_DOCK_HEADSET | |
| 287 | AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET | |
| 288 | AUDIO_DEVICE_OUT_DEFAULT), |
| 289 | AUDIO_DEVICE_OUT_ALL_A2DP = (AUDIO_DEVICE_OUT_BLUETOOTH_A2DP | |
| 290 | AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES | |
| 291 | AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER), |
| 292 | AUDIO_DEVICE_OUT_ALL_SCO = (AUDIO_DEVICE_OUT_BLUETOOTH_SCO | |
| 293 | AUDIO_DEVICE_OUT_BLUETOOTH_SCO_HEADSET | |
| 294 | AUDIO_DEVICE_OUT_BLUETOOTH_SCO_CARKIT), |
| 295 | |
| 296 | /* input devices */ |
| 297 | AUDIO_DEVICE_IN_COMMUNICATION = 0x10000, |
| 298 | AUDIO_DEVICE_IN_AMBIENT = 0x20000, |
| 299 | AUDIO_DEVICE_IN_BUILTIN_MIC = 0x40000, |
| 300 | AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET = 0x80000, |
| 301 | AUDIO_DEVICE_IN_WIRED_HEADSET = 0x100000, |
| 302 | AUDIO_DEVICE_IN_AUX_DIGITAL = 0x200000, |
| 303 | AUDIO_DEVICE_IN_VOICE_CALL = 0x400000, |
| 304 | AUDIO_DEVICE_IN_BACK_MIC = 0x800000, |
| 305 | AUDIO_DEVICE_IN_DEFAULT = 0x80000000, |
| 306 | |
| 307 | AUDIO_DEVICE_IN_ALL = (AUDIO_DEVICE_IN_COMMUNICATION | |
| 308 | AUDIO_DEVICE_IN_AMBIENT | |
| 309 | AUDIO_DEVICE_IN_BUILTIN_MIC | |
| 310 | AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET | |
| 311 | AUDIO_DEVICE_IN_WIRED_HEADSET | |
| 312 | AUDIO_DEVICE_IN_AUX_DIGITAL | |
| 313 | AUDIO_DEVICE_IN_VOICE_CALL | |
| 314 | AUDIO_DEVICE_IN_BACK_MIC | |
| 315 | AUDIO_DEVICE_IN_DEFAULT), |
| 316 | AUDIO_DEVICE_IN_ALL_SCO = AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET, |
| 317 | } audio_devices_t; |
| 318 | |
| 319 | static inline bool audio_is_output_device(audio_devices_t device) |
| 320 | { |
| 321 | if ((popcount(device) == 1) && ((device & ~AUDIO_DEVICE_OUT_ALL) == 0)) |
| 322 | return true; |
| 323 | else |
| 324 | return false; |
| 325 | } |
| 326 | |
| 327 | static inline bool audio_is_input_device(audio_devices_t device) |
| 328 | { |
| 329 | if ((popcount(device) == 1) && ((device & ~AUDIO_DEVICE_IN_ALL) == 0)) |
| 330 | return true; |
| 331 | else |
| 332 | return false; |
| 333 | } |
| 334 | |
| 335 | static inline bool audio_is_a2dp_device(audio_devices_t device) |
| 336 | { |
| 337 | if ((popcount(device) == 1) && (device & AUDIO_DEVICE_OUT_ALL_A2DP)) |
| 338 | return true; |
| 339 | else |
| 340 | return false; |
| 341 | } |
| 342 | |
| 343 | static inline bool audio_is_bluetooth_sco_device(audio_devices_t device) |
| 344 | { |
| 345 | if ((popcount(device) == 1) && (device & (AUDIO_DEVICE_OUT_ALL_SCO | |
| 346 | AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET))) |
| 347 | return true; |
| 348 | else |
| 349 | return false; |
| 350 | } |
| 351 | |
| 352 | static inline bool audio_is_input_channel(uint32_t channel) |
| 353 | { |
| 354 | if ((channel & ~AUDIO_CHANNEL_IN_ALL) == 0) |
| 355 | return true; |
| 356 | else |
| 357 | return false; |
| 358 | } |
| 359 | |
| 360 | static inline bool audio_is_output_channel(uint32_t channel) |
| 361 | { |
| 362 | if ((channel & ~AUDIO_CHANNEL_OUT_ALL) == 0) |
| 363 | return true; |
| 364 | else |
| 365 | return false; |
| 366 | } |
| 367 | |
| 368 | static inline bool audio_is_valid_format(uint32_t format) |
| 369 | { |
| 370 | switch (format & AUDIO_FORMAT_MAIN_MASK) { |
| 371 | case AUDIO_FORMAT_PCM: |
| 372 | case AUDIO_FORMAT_MP3: |
| 373 | case AUDIO_FORMAT_AMR_NB: |
| 374 | case AUDIO_FORMAT_AMR_WB: |
| 375 | case AUDIO_FORMAT_AAC: |
| 376 | case AUDIO_FORMAT_HE_AAC_V1: |
| 377 | case AUDIO_FORMAT_HE_AAC_V2: |
| 378 | case AUDIO_FORMAT_VORBIS: |
| 379 | return true; |
| 380 | default: |
| 381 | return false; |
| 382 | } |
| 383 | } |
| 384 | |
| 385 | static inline bool audio_is_linear_pcm(uint32_t format) |
| 386 | { |
| 387 | switch (format) { |
| 388 | case AUDIO_FORMAT_PCM_16_BIT: |
| 389 | case AUDIO_FORMAT_PCM_8_BIT: |
| 390 | return true; |
| 391 | default: |
| 392 | return false; |
| 393 | } |
| 394 | } |
| 395 | |
| 396 | |
| 397 | __END_DECLS |
| 398 | |
| 399 | #endif // ANDROID_AUDIO_CORE_H |