1 /** @file 2 * @brief Bluetooth LC3 codec handling 3 */ 4 5 /* 6 * Copyright (c) 2020 Intel Corporation 7 * Copyright (c) 2022 Nordic Semiconductor ASA 8 * 9 * SPDX-License-Identifier: Apache-2.0 10 */ 11 #ifndef ZEPHYR_INCLUDE_BLUETOOTH_AUDIO_LC3_H_ 12 #define ZEPHYR_INCLUDE_BLUETOOTH_AUDIO_LC3_H_ 13 14 /** 15 * @brief LC3 16 * @defgroup BT_AUDIO_CODEC_LC3 AUDIO 17 * @ingroup bluetooth 18 * @{ 19 */ 20 21 #include <zephyr/sys/util_macro.h> 22 #include <zephyr/bluetooth/byteorder.h> 23 #include <zephyr/bluetooth/hci_types.h> 24 25 #ifdef __cplusplus 26 extern "C" { 27 #endif 28 29 /** 30 * @brief LC3 codec ID 31 */ 32 #define BT_HCI_CODING_FORMAT_LC3 0x06 33 34 /** 35 * @brief Codec capability type id's 36 * 37 * Used to build and parse codec capabilities as specified in the PAC specification. 38 * Source is assigned numbers for Generic Audio, bluetooth.com. 39 * 40 * Even though they are in-fixed with LC3 they can be used for other codec types as well. 41 */ 42 enum bt_audio_codec_capability_type { 43 44 /** 45 * @brief LC3 sample frequency capability type 46 */ 47 BT_AUDIO_CODEC_LC3_FREQ = 0x01, 48 49 /** 50 * @brief LC3 frame duration capability type 51 */ 52 BT_AUDIO_CODEC_LC3_DURATION = 0x02, 53 54 /** 55 * @brief LC3 channel count capability type 56 */ 57 BT_AUDIO_CODEC_LC3_CHAN_COUNT = 0x03, 58 59 /** 60 * @brief LC3 frame length capability type 61 */ 62 BT_AUDIO_CODEC_LC3_FRAME_LEN = 0x04, 63 64 /** 65 * @brief Max codec frame count per SDU capability type 66 */ 67 BT_AUDIO_CODEC_LC3_FRAME_COUNT = 0x05, 68 }; 69 70 /** 71 * @brief LC3 8 Khz frequency capability 72 */ 73 #define BT_AUDIO_CODEC_LC3_FREQ_8KHZ BIT(0) 74 /** 75 * @brief LC3 11.025 Khz frequency capability 76 */ 77 #define BT_AUDIO_CODEC_LC3_FREQ_11KHZ BIT(1) 78 /** 79 * @brief LC3 16 Khz frequency capability 80 */ 81 #define BT_AUDIO_CODEC_LC3_FREQ_16KHZ BIT(2) 82 /** 83 * @brief LC3 22.05 Khz frequency capability 84 */ 85 #define BT_AUDIO_CODEC_LC3_FREQ_22KHZ BIT(3) 86 /** 87 * @brief LC3 24 Khz frequency capability 88 */ 89 #define BT_AUDIO_CODEC_LC3_FREQ_24KHZ BIT(4) 90 /** 91 * @brief LC3 32 Khz frequency capability 92 */ 93 #define BT_AUDIO_CODEC_LC3_FREQ_32KHZ BIT(5) 94 /** 95 * @brief LC3 44.1 Khz frequency capability 96 */ 97 #define BT_AUDIO_CODEC_LC3_FREQ_44KHZ BIT(6) 98 /** 99 * @brief LC3 48 Khz frequency capability 100 */ 101 #define BT_AUDIO_CODEC_LC3_FREQ_48KHZ BIT(7) 102 /** 103 * @brief LC3 any frequency capability 104 */ 105 #define BT_AUDIO_CODEC_LC3_FREQ_ANY \ 106 (BT_AUDIO_CODEC_LC3_FREQ_8KHZ | BT_AUDIO_CODEC_LC3_FREQ_16KHZ | \ 107 BT_AUDIO_CODEC_LC3_FREQ_24KHZ | BT_AUDIO_CODEC_LC3_FREQ_32KHZ | \ 108 BT_AUDIO_CODEC_LC3_FREQ_44KHZ | BT_AUDIO_CODEC_LC3_FREQ_48KHZ) 109 110 /** 111 * @brief LC3 7.5 msec frame duration capability 112 */ 113 #define BT_AUDIO_CODEC_LC3_DURATION_7_5 BIT(0) 114 /** 115 * @brief LC3 10 msec frame duration capability 116 */ 117 #define BT_AUDIO_CODEC_LC3_DURATION_10 BIT(1) 118 /** 119 * @brief LC3 any frame duration capability 120 */ 121 #define BT_AUDIO_CODEC_LC3_DURATION_ANY \ 122 (BT_AUDIO_CODEC_LC3_DURATION_7_5 | BT_AUDIO_CODEC_LC3_DURATION_10) 123 /** 124 * @brief LC3 7.5 msec preferred frame duration capability 125 */ 126 #define BT_AUDIO_CODEC_LC3_DURATION_PREFER_7_5 BIT(4) 127 /** 128 * @brief LC3 10 msec preferred frame duration capability 129 */ 130 #define BT_AUDIO_CODEC_LC3_DURATION_PREFER_10 BIT(5) 131 132 /** 133 * @brief LC3 minimum supported channel counts 134 */ 135 #define BT_AUDIO_CODEC_LC3_CHAN_COUNT_MIN 1 136 /** 137 * @brief LC3 maximum supported channel counts 138 */ 139 #define BT_AUDIO_CODEC_LC3_CHAN_COUNT_MAX 8 140 /** 141 * @brief LC3 channel count support capability 142 * 143 * Macro accepts variable number of channel counts. 144 * The allowed channel counts are defined by specification and have to be in range from 145 * @ref BT_AUDIO_CODEC_LC3_CHAN_COUNT_MIN to @ref BT_AUDIO_CODEC_LC3_CHAN_COUNT_MAX inclusive. 146 * 147 * Example to support 1 and 3 channels: 148 * BT_AUDIO_CODEC_LC3_CHAN_COUNT_SUPPORT(1, 3) 149 */ 150 #define BT_AUDIO_CODEC_LC3_CHAN_COUNT_SUPPORT(...) \ 151 ((uint8_t)((FOR_EACH(BIT, (|), __VA_ARGS__)) >> 1)) 152 153 struct BT_AUDIO_CODEC_LC3_frame_len { 154 uint16_t min; 155 uint16_t max; 156 }; 157 158 struct bt_audio_codec_octets_per_codec_frame { 159 /** Minimum number of octets supported per codec frame */ 160 uint16_t min; 161 /** Maximum number of octets supported per codec frame */ 162 uint16_t max; 163 }; 164 165 /** 166 * @brief Codec configuration type IDs 167 * 168 * Used to build and parse codec configurations as specified in the ASCS and BAP specifications. 169 * Source is assigned numbers for Generic Audio, bluetooth.com. 170 * 171 * Even though they are in-fixed with LC3 they can be used for other codec types as well. 172 */ 173 enum bt_audio_codec_config_type { 174 175 /** @brief LC3 Sample Frequency configuration type. */ 176 BT_AUDIO_CODEC_CONFIG_LC3_FREQ = 0x01, 177 178 /** @brief LC3 Frame Duration configuration type. */ 179 BT_AUDIO_CODEC_CONFIG_LC3_DURATION = 0x02, 180 181 /** @brief LC3 channel Allocation configuration type. */ 182 BT_AUDIO_CODEC_CONFIG_LC3_CHAN_ALLOC = 0x03, 183 184 /** @brief LC3 Frame Length configuration type. */ 185 BT_AUDIO_CODEC_CONFIG_LC3_FRAME_LEN = 0x04, 186 187 /** @brief Codec frame blocks, per SDU configuration type. */ 188 BT_AUDIO_CODEC_CONFIG_LC3_FRAME_BLKS_PER_SDU = 0x05, 189 }; 190 191 enum bt_audio_codec_config_freq { 192 /** 193 * @brief 8 Khz codec Sample Frequency configuration 194 */ 195 BT_AUDIO_CODEC_CONFIG_LC3_FREQ_8KHZ = 0x01, 196 /** 197 * @brief 11.025 Khz codec Sample Frequency configuration 198 */ 199 BT_AUDIO_CODEC_CONFIG_LC3_FREQ_11KHZ = 0x02, 200 /** 201 * @brief 16 Khz codec Sample Frequency configuration 202 */ 203 BT_AUDIO_CODEC_CONFIG_LC3_FREQ_16KHZ = 0x03, 204 /** 205 * @brief 22.05 Khz codec Sample Frequency configuration 206 */ 207 BT_AUDIO_CODEC_CONFIG_LC3_FREQ_22KHZ = 0x04, 208 /** 209 * @brief 24 Khz codec Sample Frequency configuration 210 */ 211 BT_AUDIO_CODEC_CONFIG_LC3_FREQ_24KHZ = 0x05, 212 /** 213 * @brief 32 Khz codec Sample Frequency configuration 214 */ 215 BT_AUDIO_CODEC_CONFIG_LC3_FREQ_32KHZ = 0x06, 216 /** 217 * @brief 44.1 Khz codec Sample Frequency configuration 218 */ 219 BT_AUDIO_CODEC_CONFIG_LC3_FREQ_44KHZ = 0x07, 220 /** 221 * @brief 48 Khz codec Sample Frequency configuration 222 */ 223 BT_AUDIO_CODEC_CONFIG_LC3_FREQ_48KHZ = 0x08, 224 /** 225 * @brief 88.2 Khz codec Sample Frequency configuration 226 */ 227 BT_AUDIO_CODEC_CONFIG_LC3_FREQ_88KHZ = 0x09, 228 /** 229 * @brief 96 Khz codec Sample Frequency configuration 230 */ 231 BT_AUDIO_CODEC_CONFIG_LC3_FREQ_96KHZ = 0x0a, 232 /** 233 * @brief 176.4 Khz codec Sample Frequency configuration 234 */ 235 BT_AUDIO_CODEC_CONFIG_LC3_FREQ_176KHZ = 0x0b, 236 /** 237 * @brief 192 Khz codec Sample Frequency configuration 238 */ 239 BT_AUDIO_CODEC_CONFIG_LC3_FREQ_192KHZ = 0x0c, 240 /** 241 * @brief 384 Khz codec Sample Frequency configuration 242 */ 243 BT_AUDIO_CODEC_CONFIG_LC3_FREQ_384KHZ = 0x0d, 244 }; 245 246 /** 247 * @brief LC3 7.5 msec Frame Duration configuration 248 */ 249 #define BT_AUDIO_CODEC_CONFIG_LC3_DURATION_7_5 0x00 250 /** 251 * @brief LC3 10 msec Frame Duration configuration 252 */ 253 #define BT_AUDIO_CODEC_CONFIG_LC3_DURATION_10 0x01 254 255 /** 256 * @brief Helper to declare LC3 codec capability 257 * 258 * _max_frames_per_sdu value is optional and will be included only if != 1 259 */ 260 /* COND_CODE_1 is used to omit an LTV entry in case the _frames_per_sdu is 1. 261 * COND_CODE_1 will evaluate to second argument if the flag parameter(first argument) is 1 262 * - removing one layer of paranteses. 263 * If the flags argument is != 1 it will evaluate to the third argument which inserts a LTV 264 * entry for the max_frames_per_sdu value. 265 */ 266 267 #define BT_AUDIO_CODEC_CAP_LC3_DATA(_freq, _duration, _chan_count, _len_min, _len_max, \ 268 _max_frames_per_sdu) \ 269 { \ 270 BT_AUDIO_CODEC_DATA(BT_AUDIO_CODEC_LC3_FREQ, BT_BYTES_LIST_LE16(_freq)), \ 271 BT_AUDIO_CODEC_DATA(BT_AUDIO_CODEC_LC3_DURATION, (_duration)), \ 272 BT_AUDIO_CODEC_DATA(BT_AUDIO_CODEC_LC3_CHAN_COUNT, (_chan_count)), \ 273 BT_AUDIO_CODEC_DATA(BT_AUDIO_CODEC_LC3_FRAME_LEN, \ 274 BT_BYTES_LIST_LE16(_len_min), \ 275 BT_BYTES_LIST_LE16(_len_max)), \ 276 COND_CODE_1(_max_frames_per_sdu, (), \ 277 (BT_AUDIO_CODEC_DATA(BT_AUDIO_CODEC_LC3_FRAME_COUNT, \ 278 (_max_frames_per_sdu)))) \ 279 } 280 281 /** 282 * @brief Helper to declare LC3 codec metadata 283 */ 284 #define BT_AUDIO_CODEC_CAP_LC3_META(_prefer_context) \ 285 { \ 286 BT_AUDIO_CODEC_DATA(BT_AUDIO_METADATA_TYPE_PREF_CONTEXT, \ 287 BT_BYTES_LIST_LE16(_prefer_context)) \ 288 } 289 290 /** 291 * @brief Helper to declare LC3 codec 292 * 293 * @param _freq Supported Sampling Frequencies bitfield (see BT_AUDIO_CODEC_LC3_FREQ_*) 294 * @param _duration Supported Frame Durations bitfield (see BT_AUDIO_CODEC_LC3_DURATION_*) 295 * @param _chan_count Supported channels (see @ref BT_AUDIO_CODEC_LC3_CHAN_COUNT_SUPPORT) 296 * @param _len_min Minimum number of octets supported per codec frame 297 * @param _len_max Maximum number of octets supported per codec frame 298 * @param _max_frames_per_sdu Supported maximum codec frames per SDU 299 * @param _prefer_context Preferred contexts (@ref bt_audio_context) 300 * 301 */ 302 #define BT_AUDIO_CODEC_CAP_LC3(_freq, _duration, _chan_count, _len_min, _len_max, \ 303 _max_frames_per_sdu, _prefer_context) \ 304 BT_AUDIO_CODEC_CAP(BT_HCI_CODING_FORMAT_LC3, 0x0000, 0x0000, \ 305 BT_AUDIO_CODEC_CAP_LC3_DATA(_freq, _duration, _chan_count, _len_min, \ 306 _len_max, _max_frames_per_sdu), \ 307 BT_AUDIO_CODEC_CAP_LC3_META(_prefer_context)) 308 309 /** 310 * @brief Helper to declare LC3 codec data configuration 311 * 312 * @param _freq Sampling frequency (BT_AUDIO_CODEC_CONFIG_LC3_FREQ_*) 313 * @param _duration Frame duration (BT_AUDIO_CODEC_CONFIG_LC3_DURATION_*) 314 * @param _loc Audio channel location bitfield (@ref bt_audio_location) 315 * @param _len Octets per frame (16-bit integer) 316 * @param _frames_per_sdu Frames per SDU (8-bit integer). This value is optional and will be 317 * included only if != 1 318 */ 319 #define BT_AUDIO_CODEC_CFG_LC3_DATA(_freq, _duration, _loc, _len, _frames_per_sdu) \ 320 { \ 321 BT_AUDIO_CODEC_DATA(BT_AUDIO_CODEC_CONFIG_LC3_FREQ, (_freq)), \ 322 BT_AUDIO_CODEC_DATA(BT_AUDIO_CODEC_CONFIG_LC3_DURATION, (_duration)), \ 323 BT_AUDIO_CODEC_DATA(BT_AUDIO_CODEC_CONFIG_LC3_CHAN_ALLOC, \ 324 BT_BYTES_LIST_LE32(_loc)), \ 325 BT_AUDIO_CODEC_DATA(BT_AUDIO_CODEC_CONFIG_LC3_FRAME_LEN, \ 326 BT_BYTES_LIST_LE16(_len)), \ 327 COND_CODE_1(_frames_per_sdu, (), \ 328 (BT_AUDIO_CODEC_DATA(BT_AUDIO_CODEC_CONFIG_LC3_FRAME_BLKS_PER_SDU, \ 329 (_frames_per_sdu)))) \ 330 } 331 332 /** 333 * @brief Helper to declare LC3 codec metadata configuration 334 */ 335 #define BT_AUDIO_CODEC_CFG_LC3_META(_stream_context) \ 336 { \ 337 BT_AUDIO_CODEC_DATA(BT_AUDIO_METADATA_TYPE_STREAM_CONTEXT, \ 338 BT_BYTES_LIST_LE16(_stream_context)) \ 339 } 340 341 /** 342 * @brief Helper to declare LC3 codec configuration. 343 * 344 * @param _freq Sampling frequency (BT_AUDIO_CODEC_CONFIG_LC3_FREQ_*) 345 * @param _duration Frame duration (BT_AUDIO_CODEC_CONFIG_LC3_DURATION_*) 346 * @param _loc Audio channel location bitfield (@ref bt_audio_location) 347 * @param _len Octets per frame (16-bit integer) 348 * @param _frames_per_sdu Frames per SDU (8-bit integer) 349 * @param _stream_context Stream context (BT_AUDIO_CONTEXT_*) 350 */ 351 #define BT_AUDIO_CODEC_LC3_CONFIG(_freq, _duration, _loc, _len, _frames_per_sdu, _stream_context) \ 352 BT_AUDIO_CODEC_CFG( \ 353 BT_HCI_CODING_FORMAT_LC3, 0x0000, 0x0000, \ 354 BT_AUDIO_CODEC_CFG_LC3_DATA(_freq, _duration, _loc, _len, _frames_per_sdu), \ 355 BT_AUDIO_CODEC_CFG_LC3_META(_stream_context)) 356 357 /** 358 * @brief Helper to declare LC3 8.1 codec configuration 359 * 360 * @param _loc Audio channel location bitfield (@ref bt_audio_location) 361 * @param _stream_context Stream context (BT_AUDIO_CONTEXT_*) 362 */ 363 #define BT_AUDIO_CODEC_LC3_CONFIG_8_1(_loc, _stream_context) \ 364 BT_AUDIO_CODEC_LC3_CONFIG(BT_AUDIO_CODEC_CONFIG_LC3_FREQ_8KHZ, \ 365 BT_AUDIO_CODEC_CONFIG_LC3_DURATION_7_5, _loc, 26u, 1, \ 366 _stream_context) 367 /** 368 * @brief Helper to declare LC3 8.2 codec configuration 369 * 370 * @param _loc Audio channel location bitfield (@ref bt_audio_location) 371 * @param _stream_context Stream context (BT_AUDIO_CONTEXT_*) 372 */ 373 #define BT_AUDIO_CODEC_LC3_CONFIG_8_2(_loc, _stream_context) \ 374 BT_AUDIO_CODEC_LC3_CONFIG(BT_AUDIO_CODEC_CONFIG_LC3_FREQ_8KHZ, \ 375 BT_AUDIO_CODEC_CONFIG_LC3_DURATION_10, _loc, 30u, 1, \ 376 _stream_context) 377 /** 378 * @brief Helper to declare LC3 16.1 codec configuration 379 * 380 * @param _loc Audio channel location bitfield (@ref bt_audio_location) 381 * @param _stream_context Stream context (BT_AUDIO_CONTEXT_*) 382 */ 383 #define BT_AUDIO_CODEC_LC3_CONFIG_16_1(_loc, _stream_context) \ 384 BT_AUDIO_CODEC_LC3_CONFIG(BT_AUDIO_CODEC_CONFIG_LC3_FREQ_16KHZ, \ 385 BT_AUDIO_CODEC_CONFIG_LC3_DURATION_7_5, _loc, 30u, 1, \ 386 _stream_context) 387 /** 388 * @brief Helper to declare LC3 16.2 codec configuration 389 * 390 * @param _loc Audio channel location bitfield (@ref bt_audio_location) 391 * @param _stream_context Stream context (BT_AUDIO_CONTEXT_*) 392 */ 393 #define BT_AUDIO_CODEC_LC3_CONFIG_16_2(_loc, _stream_context) \ 394 BT_AUDIO_CODEC_LC3_CONFIG(BT_AUDIO_CODEC_CONFIG_LC3_FREQ_16KHZ, \ 395 BT_AUDIO_CODEC_CONFIG_LC3_DURATION_10, _loc, 40u, 1, \ 396 _stream_context) 397 398 /** 399 * @brief Helper to declare LC3 24.1 codec configuration 400 * 401 * @param _loc Audio channel location bitfield (@ref bt_audio_location) 402 * @param _stream_context Stream context (BT_AUDIO_CONTEXT_*) 403 */ 404 #define BT_AUDIO_CODEC_LC3_CONFIG_24_1(_loc, _stream_context) \ 405 BT_AUDIO_CODEC_LC3_CONFIG(BT_AUDIO_CODEC_CONFIG_LC3_FREQ_24KHZ, \ 406 BT_AUDIO_CODEC_CONFIG_LC3_DURATION_7_5, _loc, 45u, 1, \ 407 _stream_context) 408 /** 409 * @brief Helper to declare LC3 24.2 codec configuration 410 * 411 * @param _loc Audio channel location bitfield (@ref bt_audio_location) 412 * @param _stream_context Stream context (BT_AUDIO_CONTEXT_*) 413 */ 414 #define BT_AUDIO_CODEC_LC3_CONFIG_24_2(_loc, _stream_context) \ 415 BT_AUDIO_CODEC_LC3_CONFIG(BT_AUDIO_CODEC_CONFIG_LC3_FREQ_24KHZ, \ 416 BT_AUDIO_CODEC_CONFIG_LC3_DURATION_10, _loc, 60u, 1, \ 417 _stream_context) 418 /** 419 * @brief Helper to declare LC3 32.1 codec configuration 420 * 421 * @param _loc Audio channel location bitfield (@ref bt_audio_location) 422 * @param _stream_context Stream context (BT_AUDIO_CONTEXT_*) 423 */ 424 #define BT_AUDIO_CODEC_LC3_CONFIG_32_1(_loc, _stream_context) \ 425 BT_AUDIO_CODEC_LC3_CONFIG(BT_AUDIO_CODEC_CONFIG_LC3_FREQ_32KHZ, \ 426 BT_AUDIO_CODEC_CONFIG_LC3_DURATION_7_5, _loc, 60u, 1, \ 427 _stream_context) 428 /** 429 * @brief Helper to declare LC3 32.2 codec configuration 430 * 431 * @param _loc Audio channel location bitfield (@ref bt_audio_location) 432 * @param _stream_context Stream context (BT_AUDIO_CONTEXT_*) 433 */ 434 #define BT_AUDIO_CODEC_LC3_CONFIG_32_2(_loc, _stream_context) \ 435 BT_AUDIO_CODEC_LC3_CONFIG(BT_AUDIO_CODEC_CONFIG_LC3_FREQ_32KHZ, \ 436 BT_AUDIO_CODEC_CONFIG_LC3_DURATION_10, _loc, 80u, 1, \ 437 _stream_context) 438 /** 439 * @brief Helper to declare LC3 441.1 codec configuration 440 * 441 * @param _loc Audio channel location bitfield (@ref bt_audio_location) 442 * @param _stream_context Stream context (BT_AUDIO_CONTEXT_*) 443 */ 444 #define BT_AUDIO_CODEC_LC3_CONFIG_441_1(_loc, _stream_context) \ 445 BT_AUDIO_CODEC_LC3_CONFIG(BT_AUDIO_CODEC_CONFIG_LC3_FREQ_44KHZ, \ 446 BT_AUDIO_CODEC_CONFIG_LC3_DURATION_7_5, _loc, 98u, 1, \ 447 _stream_context) 448 /** 449 * @brief Helper to declare LC3 441.2 codec configuration 450 * 451 * @param _loc Audio channel location bitfield (@ref bt_audio_location) 452 * @param _stream_context Stream context (BT_AUDIO_CONTEXT_*) 453 */ 454 #define BT_AUDIO_CODEC_LC3_CONFIG_441_2(_loc, _stream_context) \ 455 BT_AUDIO_CODEC_LC3_CONFIG(BT_AUDIO_CODEC_CONFIG_LC3_FREQ_44KHZ, \ 456 BT_AUDIO_CODEC_CONFIG_LC3_DURATION_10, _loc, 130u, 1, \ 457 _stream_context) 458 /** 459 * @brief Helper to declare LC3 48.1 codec configuration 460 * 461 * @param _loc Audio channel location bitfield (@ref bt_audio_location) 462 * @param _stream_context Stream context (BT_AUDIO_CONTEXT_*) 463 */ 464 #define BT_AUDIO_CODEC_LC3_CONFIG_48_1(_loc, _stream_context) \ 465 BT_AUDIO_CODEC_LC3_CONFIG(BT_AUDIO_CODEC_CONFIG_LC3_FREQ_48KHZ, \ 466 BT_AUDIO_CODEC_CONFIG_LC3_DURATION_7_5, _loc, 75u, 1, \ 467 _stream_context) 468 /** 469 * @brief Helper to declare LC3 48.2 codec configuration 470 * 471 * @param _loc Audio channel location bitfield (@ref bt_audio_location) 472 * @param _stream_context Stream context (BT_AUDIO_CONTEXT_*) 473 */ 474 #define BT_AUDIO_CODEC_LC3_CONFIG_48_2(_loc, _stream_context) \ 475 BT_AUDIO_CODEC_LC3_CONFIG(BT_AUDIO_CODEC_CONFIG_LC3_FREQ_48KHZ, \ 476 BT_AUDIO_CODEC_CONFIG_LC3_DURATION_10, _loc, 100u, 1, \ 477 _stream_context) 478 /** 479 * @brief Helper to declare LC3 48.3 codec configuration 480 * 481 * @param _loc Audio channel location bitfield (@ref bt_audio_location) 482 * @param _stream_context Stream context (BT_AUDIO_CONTEXT_*) 483 */ 484 #define BT_AUDIO_CODEC_LC3_CONFIG_48_3(_loc, _stream_context) \ 485 BT_AUDIO_CODEC_LC3_CONFIG(BT_AUDIO_CODEC_CONFIG_LC3_FREQ_48KHZ, \ 486 BT_AUDIO_CODEC_CONFIG_LC3_DURATION_7_5, _loc, 90u, 1, \ 487 _stream_context) 488 /** 489 * @brief Helper to declare LC3 48.4 codec configuration 490 * 491 * @param _loc Audio channel location bitfield (@ref bt_audio_location) 492 * @param _stream_context Stream context (BT_AUDIO_CONTEXT_*) 493 */ 494 #define BT_AUDIO_CODEC_LC3_CONFIG_48_4(_loc, _stream_context) \ 495 BT_AUDIO_CODEC_LC3_CONFIG(BT_AUDIO_CODEC_CONFIG_LC3_FREQ_48KHZ, \ 496 BT_AUDIO_CODEC_CONFIG_LC3_DURATION_10, _loc, 120u, 1, \ 497 _stream_context) 498 /** 499 * @brief Helper to declare LC3 48.5 codec configuration 500 * 501 * @param _loc Audio channel location bitfield (@ref bt_audio_location) 502 * @param _stream_context Stream context (BT_AUDIO_CONTEXT_*) 503 */ 504 #define BT_AUDIO_CODEC_LC3_CONFIG_48_5(_loc, _stream_context) \ 505 BT_AUDIO_CODEC_LC3_CONFIG(BT_AUDIO_CODEC_CONFIG_LC3_FREQ_48KHZ, \ 506 BT_AUDIO_CODEC_CONFIG_LC3_DURATION_7_5, _loc, 117u, 1, \ 507 _stream_context) 508 /** 509 * @brief Helper to declare LC3 48.6 codec configuration 510 * 511 * @param _loc Audio channel location bitfield (@ref bt_audio_location) 512 * @param _stream_context Stream context (BT_AUDIO_CONTEXT_*) 513 */ 514 #define BT_AUDIO_CODEC_LC3_CONFIG_48_6(_loc, _stream_context) \ 515 BT_AUDIO_CODEC_LC3_CONFIG(BT_AUDIO_CODEC_CONFIG_LC3_FREQ_48KHZ, \ 516 BT_AUDIO_CODEC_CONFIG_LC3_DURATION_10, _loc, 155u, 1, \ 517 _stream_context) 518 /** 519 * @brief Helper to declare LC3 codec QoS for 7.5ms interval 520 */ 521 #define BT_AUDIO_CODEC_LC3_QOS_7_5(_framing, _sdu, _rtn, _latency, _pd) \ 522 BT_AUDIO_CODEC_QOS(7500u, _framing, BT_AUDIO_CODEC_QOS_2M, _sdu, _rtn, _latency, _pd) 523 /** 524 * @brief Helper to declare LC3 codec QoS for 7.5ms interval unframed input 525 */ 526 #define BT_AUDIO_CODEC_LC3_QOS_7_5_UNFRAMED(_sdu, _rtn, _latency, _pd) \ 527 BT_AUDIO_CODEC_QOS_UNFRAMED(7500u, _sdu, _rtn, _latency, _pd) 528 /** 529 * @brief Helper to declare LC3 codec QoS for 10ms frame internal 530 */ 531 #define BT_AUDIO_CODEC_LC3_QOS_10(_framing, _sdu, _rtn, _latency, _pd) \ 532 BT_AUDIO_CODEC_QOS(10000u, _framing, BT_AUDIO_CODEC_QOS_2M, _sdu, _rtn, _latency, _pd) 533 /** 534 * @brief Helper to declare LC3 codec QoS for 10ms interval unframed input 535 */ 536 #define BT_AUDIO_CODEC_LC3_QOS_10_UNFRAMED(_sdu, _rtn, _latency, _pd) \ 537 BT_AUDIO_CODEC_QOS_UNFRAMED(10000u, _sdu, _rtn, _latency, _pd) 538 539 #ifdef __cplusplus 540 } 541 #endif 542 543 /** 544 * @} 545 */ 546 547 #endif /* ZEPHYR_INCLUDE_BLUETOOTH_AUDIO_LC3_H_ */ 548
