1 /* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) AND MIT) */ 2 /* 3 * compress_params.h - codec types and parameters for compressed data 4 * streaming interface 5 * 6 * Copyright (C) 2011 Intel Corporation 7 * Authors: Pierre-Louis Bossart <[email protected]> 8 * Vinod Koul <[email protected]> 9 * 10 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 11 * 12 * This program is free software; you can redistribute it and/or modify 13 * it under the terms of the GNU General Public License as published by 14 * the Free Software Foundation; version 2 of the License. 15 * 16 * This program is distributed in the hope that it will be useful, but 17 * WITHOUT ANY WARRANTY; without even the implied warranty of 18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 19 * General Public License for more details. 20 * 21 * You should have received a copy of the GNU General Public License along 22 * with this program; if not, write to the Free Software Foundation, Inc., 23 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. 24 * 25 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 26 * 27 * The definitions in this file are derived from the OpenMAX AL version 1.1 28 * and OpenMAX IL v 1.1.2 header files which contain the copyright notice below. 29 * 30 * Copyright (c) 2007-2010 The Khronos Group Inc. 31 * 32 * Permission is hereby granted, free of charge, to any person obtaining 33 * a copy of this software and/or associated documentation files (the 34 * "Materials "), to deal in the Materials without restriction, including 35 * without limitation the rights to use, copy, modify, merge, publish, 36 * distribute, sublicense, and/or sell copies of the Materials, and to 37 * permit persons to whom the Materials are furnished to do so, subject to 38 * the following conditions: 39 * 40 * The above copyright notice and this permission notice shall be included 41 * in all copies or substantial portions of the Materials. 42 * 43 * THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 44 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 45 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 46 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY 47 * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 48 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE 49 * MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS. 50 * 51 */ 52 #ifndef __SND_COMPRESS_PARAMS_H 53 #define __SND_COMPRESS_PARAMS_H 54 55 #include <linux/types.h> 56 57 #define SND_DEC_DDP_MAX_PARAMS 18 58 59 /* Maximum PCM channels */ 60 #define MAX_PCM_DECODE_CHANNELS 32 61 62 /* AUDIO CODECS SUPPORTED */ 63 #define MAX_NUM_CODECS 32 64 #define MAX_NUM_CODEC_DESCRIPTORS 32 65 #define MAX_NUM_BITRATES 32 66 #define MAX_NUM_SAMPLE_RATES 32 67 68 /* compressed TX */ 69 #define MAX_NUM_FRAMES_PER_BUFFER 1 70 #define COMPRESSED_META_DATA_MODE 0x10 71 #define META_DATA_LEN_BYTES 36 72 #define Q6_AC3_DECODER 0x00010BF6 73 #define Q6_EAC3_DECODER 0x00010C3C 74 #define Q6_DTS 0x00010D88 75 #define Q6_DTS_LBR 0x00010DBB 76 77 /* Timestamp flsg */ 78 /* Bit-0 - 1 : Enable Timestamp mode */ 79 /* Bit-0 - 0 : Disable Timestamp mode */ 80 #define COMPRESSED_TIMESTAMP_FLAG 0x0001 81 82 /* Perf mode flag */ 83 /* Bit-1 - 1 : Enable perf mode */ 84 /* Bit-1 - 0 : Disable perf mode */ 85 #define COMPRESSED_PERF_MODE_FLAG 0x0002 86 87 /* Codecs are listed linearly to allow for extensibility */ 88 #define SND_AUDIOCODEC_PCM ((__u32) 0x00000001) 89 #define SND_AUDIOCODEC_MP3 ((__u32) 0x00000002) 90 #define SND_AUDIOCODEC_AMR ((__u32) 0x00000003) 91 #define SND_AUDIOCODEC_AMRWB ((__u32) 0x00000004) 92 #define SND_AUDIOCODEC_AMRWBPLUS ((__u32) 0x00000005) 93 #define SND_AUDIOCODEC_AAC ((__u32) 0x00000006) 94 #define SND_AUDIOCODEC_WMA ((__u32) 0x00000007) 95 #define SND_AUDIOCODEC_REAL ((__u32) 0x00000008) 96 #define SND_AUDIOCODEC_VORBIS ((__u32) 0x00000009) 97 #define SND_AUDIOCODEC_FLAC ((__u32) 0x0000000A) 98 #define SND_AUDIOCODEC_IEC61937 ((__u32) 0x0000000B) 99 #define SND_AUDIOCODEC_G723_1 ((__u32) 0x0000000C) 100 #define SND_AUDIOCODEC_G729 ((__u32) 0x0000000D) 101 #define SND_AUDIOCODEC_BESPOKE ((__u32) 0x0000000E) 102 #define SND_AUDIOCODEC_DTS_PASS_THROUGH ((__u32) 0x0000000F) 103 #define SND_AUDIOCODEC_DTS_LBR ((__u32) 0x00000010) 104 #define SND_AUDIOCODEC_DTS_TRANSCODE_LOOPBACK ((__u32) 0x00000011) 105 #define SND_AUDIOCODEC_PASS_THROUGH ((__u32) 0x00000012) 106 #define SND_AUDIOCODEC_MP2 ((__u32) 0x00000013) 107 #define SND_AUDIOCODEC_DTS_LBR_PASS_THROUGH ((__u32) 0x00000014) 108 #define SND_AUDIOCODEC_AC3 ((__u32) 0x00000015) 109 #define SND_AUDIOCODEC_AC3_PASS_THROUGH ((__u32) 0x00000016) 110 #define SND_AUDIOCODEC_WMA_PRO ((__u32) 0x00000017) 111 #define SND_AUDIOCODEC_DTS ((__u32) 0x00000018) 112 #define SND_AUDIOCODEC_EAC3 ((__u32) 0x00000019) 113 #define SND_AUDIOCODEC_ALAC ((__u32) 0x00000020) 114 #define SND_AUDIOCODEC_APE ((__u32) 0x00000021) 115 #define SND_AUDIOCODEC_DSD ((__u32) 0x00000022) 116 #define SND_AUDIOCODEC_APTX ((__u32) 0x00000023) 117 #define SND_AUDIOCODEC_TRUEHD ((__u32) 0x00000024) 118 #define SND_AUDIOCODEC_MAT ((__u32) 0x00000025) 119 #define SND_AUDIOCODEC_THD ((__u32) 0x00000026) 120 #define SND_AUDIOCODEC_MAX SND_AUDIOCODEC_THD 121 122 /* 123 * Profile and modes are listed with bit masks. This allows for a 124 * more compact representation of fields that will not evolve 125 * (in contrast to the list of codecs) 126 */ 127 128 #define SND_AUDIOPROFILE_PCM ((__u32) 0x00000001) 129 130 /* MP3 modes are only useful for encoders */ 131 #define SND_AUDIOCHANMODE_MP3_MONO ((__u32) 0x00000001) 132 #define SND_AUDIOCHANMODE_MP3_STEREO ((__u32) 0x00000002) 133 #define SND_AUDIOCHANMODE_MP3_JOINTSTEREO ((__u32) 0x00000004) 134 #define SND_AUDIOCHANMODE_MP3_DUAL ((__u32) 0x00000008) 135 136 #define SND_AUDIOPROFILE_AMR ((__u32) 0x00000001) 137 138 /* AMR modes are only useful for encoders */ 139 #define SND_AUDIOMODE_AMR_DTX_OFF ((__u32) 0x00000001) 140 #define SND_AUDIOMODE_AMR_VAD1 ((__u32) 0x00000002) 141 #define SND_AUDIOMODE_AMR_VAD2 ((__u32) 0x00000004) 142 143 #define SND_AUDIOSTREAMFORMAT_UNDEFINED ((__u32) 0x00000000) 144 #define SND_AUDIOSTREAMFORMAT_CONFORMANCE ((__u32) 0x00000001) 145 #define SND_AUDIOSTREAMFORMAT_IF1 ((__u32) 0x00000002) 146 #define SND_AUDIOSTREAMFORMAT_IF2 ((__u32) 0x00000004) 147 #define SND_AUDIOSTREAMFORMAT_FSF ((__u32) 0x00000008) 148 #define SND_AUDIOSTREAMFORMAT_RTPPAYLOAD ((__u32) 0x00000010) 149 #define SND_AUDIOSTREAMFORMAT_ITU ((__u32) 0x00000020) 150 151 #define SND_AUDIOPROFILE_AMRWB ((__u32) 0x00000001) 152 153 /* AMRWB modes are only useful for encoders */ 154 #define SND_AUDIOMODE_AMRWB_DTX_OFF ((__u32) 0x00000001) 155 #define SND_AUDIOMODE_AMRWB_VAD1 ((__u32) 0x00000002) 156 #define SND_AUDIOMODE_AMRWB_VAD2 ((__u32) 0x00000004) 157 158 #define SND_AUDIOPROFILE_AMRWBPLUS ((__u32) 0x00000001) 159 160 #define SND_AUDIOPROFILE_AAC ((__u32) 0x00000001) 161 162 /* AAC modes are required for encoders and decoders */ 163 #define SND_AUDIOMODE_AAC_MAIN ((__u32) 0x00000001) 164 #define SND_AUDIOMODE_AAC_LC ((__u32) 0x00000002) 165 #define SND_AUDIOMODE_AAC_SSR ((__u32) 0x00000004) 166 #define SND_AUDIOMODE_AAC_LTP ((__u32) 0x00000008) 167 #define SND_AUDIOMODE_AAC_HE ((__u32) 0x00000010) 168 #define SND_AUDIOMODE_AAC_SCALABLE ((__u32) 0x00000020) 169 #define SND_AUDIOMODE_AAC_ERLC ((__u32) 0x00000040) 170 #define SND_AUDIOMODE_AAC_LD ((__u32) 0x00000080) 171 #define SND_AUDIOMODE_AAC_HE_PS ((__u32) 0x00000100) 172 #define SND_AUDIOMODE_AAC_HE_MPS ((__u32) 0x00000200) 173 174 /* AAC formats are required for encoders and decoders */ 175 #define SND_AUDIOSTREAMFORMAT_MP2ADTS ((__u32) 0x00000001) 176 #define SND_AUDIOSTREAMFORMAT_MP4ADTS ((__u32) 0x00000002) 177 #define SND_AUDIOSTREAMFORMAT_MP4LOAS ((__u32) 0x00000004) 178 #define SND_AUDIOSTREAMFORMAT_MP4LATM ((__u32) 0x00000008) 179 #define SND_AUDIOSTREAMFORMAT_ADIF ((__u32) 0x00000010) 180 #define SND_AUDIOSTREAMFORMAT_MP4FF ((__u32) 0x00000020) 181 #define SND_AUDIOSTREAMFORMAT_RAW ((__u32) 0x00000040) 182 183 #define SND_AUDIOPROFILE_WMA7 ((__u32) 0x00000001) 184 #define SND_AUDIOPROFILE_WMA8 ((__u32) 0x00000002) 185 #define SND_AUDIOPROFILE_WMA9 ((__u32) 0x00000004) 186 #define SND_AUDIOPROFILE_WMA10 ((__u32) 0x00000008) 187 188 #define SND_AUDIOMODE_WMA_LEVEL1 ((__u32) 0x00000001) 189 #define SND_AUDIOMODE_WMA_LEVEL2 ((__u32) 0x00000002) 190 #define SND_AUDIOMODE_WMA_LEVEL3 ((__u32) 0x00000004) 191 #define SND_AUDIOMODE_WMA_LEVEL4 ((__u32) 0x00000008) 192 #define SND_AUDIOMODE_WMAPRO_LEVELM0 ((__u32) 0x00000010) 193 #define SND_AUDIOMODE_WMAPRO_LEVELM1 ((__u32) 0x00000020) 194 #define SND_AUDIOMODE_WMAPRO_LEVELM2 ((__u32) 0x00000040) 195 #define SND_AUDIOMODE_WMAPRO_LEVELM3 ((__u32) 0x00000080) 196 197 #define SND_AUDIOSTREAMFORMAT_WMA_ASF ((__u32) 0x00000001) 198 /* 199 * Some implementations strip the ASF header and only send ASF packets 200 * to the DSP 201 */ 202 #define SND_AUDIOSTREAMFORMAT_WMA_NOASF_HDR ((__u32) 0x00000002) 203 204 #define SND_AUDIOPROFILE_REALAUDIO ((__u32) 0x00000001) 205 206 #define SND_AUDIOMODE_REALAUDIO_G2 ((__u32) 0x00000001) 207 #define SND_AUDIOMODE_REALAUDIO_8 ((__u32) 0x00000002) 208 #define SND_AUDIOMODE_REALAUDIO_10 ((__u32) 0x00000004) 209 #define SND_AUDIOMODE_REALAUDIO_SURROUND ((__u32) 0x00000008) 210 211 #define SND_AUDIOPROFILE_VORBIS ((__u32) 0x00000001) 212 213 #define SND_AUDIOMODE_VORBIS ((__u32) 0x00000001) 214 215 #define SND_AUDIOPROFILE_FLAC ((__u32) 0x00000001) 216 217 /* 218 * Define quality levels for FLAC encoders, from LEVEL0 (fast) 219 * to LEVEL8 (best) 220 */ 221 #define SND_AUDIOMODE_FLAC_LEVEL0 ((__u32) 0x00000001) 222 #define SND_AUDIOMODE_FLAC_LEVEL1 ((__u32) 0x00000002) 223 #define SND_AUDIOMODE_FLAC_LEVEL2 ((__u32) 0x00000004) 224 #define SND_AUDIOMODE_FLAC_LEVEL3 ((__u32) 0x00000008) 225 #define SND_AUDIOMODE_FLAC_LEVEL4 ((__u32) 0x00000010) 226 #define SND_AUDIOMODE_FLAC_LEVEL5 ((__u32) 0x00000020) 227 #define SND_AUDIOMODE_FLAC_LEVEL6 ((__u32) 0x00000040) 228 #define SND_AUDIOMODE_FLAC_LEVEL7 ((__u32) 0x00000080) 229 #define SND_AUDIOMODE_FLAC_LEVEL8 ((__u32) 0x00000100) 230 231 #define SND_AUDIOSTREAMFORMAT_FLAC ((__u32) 0x00000001) 232 #define SND_AUDIOSTREAMFORMAT_FLAC_OGG ((__u32) 0x00000002) 233 234 /* IEC61937 payloads without CUVP and preambles */ 235 #define SND_AUDIOPROFILE_IEC61937 ((__u32) 0x00000001) 236 /* IEC61937 with S/PDIF preambles+CUVP bits in 32-bit containers */ 237 #define SND_AUDIOPROFILE_IEC61937_SPDIF ((__u32) 0x00000002) 238 239 /* 240 * IEC modes are mandatory for decoders. Format autodetection 241 * will only happen on the DSP side with mode 0. The PCM mode should 242 * not be used, the PCM codec should be used instead. 243 */ 244 #define SND_AUDIOMODE_IEC_REF_STREAM_HEADER ((__u32) 0x00000000) 245 #define SND_AUDIOMODE_IEC_LPCM ((__u32) 0x00000001) 246 #define SND_AUDIOMODE_IEC_AC3 ((__u32) 0x00000002) 247 #define SND_AUDIOMODE_IEC_MPEG1 ((__u32) 0x00000004) 248 #define SND_AUDIOMODE_IEC_MP3 ((__u32) 0x00000008) 249 #define SND_AUDIOMODE_IEC_MPEG2 ((__u32) 0x00000010) 250 #define SND_AUDIOMODE_IEC_AACLC ((__u32) 0x00000020) 251 #define SND_AUDIOMODE_IEC_DTS ((__u32) 0x00000040) 252 #define SND_AUDIOMODE_IEC_ATRAC ((__u32) 0x00000080) 253 #define SND_AUDIOMODE_IEC_SACD ((__u32) 0x00000100) 254 #define SND_AUDIOMODE_IEC_EAC3 ((__u32) 0x00000200) 255 #define SND_AUDIOMODE_IEC_DTS_HD ((__u32) 0x00000400) 256 #define SND_AUDIOMODE_IEC_MLP ((__u32) 0x00000800) 257 #define SND_AUDIOMODE_IEC_DST ((__u32) 0x00001000) 258 #define SND_AUDIOMODE_IEC_WMAPRO ((__u32) 0x00002000) 259 #define SND_AUDIOMODE_IEC_REF_CXT ((__u32) 0x00004000) 260 #define SND_AUDIOMODE_IEC_HE_AAC ((__u32) 0x00008000) 261 #define SND_AUDIOMODE_IEC_HE_AAC2 ((__u32) 0x00010000) 262 #define SND_AUDIOMODE_IEC_MPEG_SURROUND ((__u32) 0x00020000) 263 264 #define SND_AUDIOPROFILE_G723_1 ((__u32) 0x00000001) 265 266 #define SND_AUDIOMODE_G723_1_ANNEX_A ((__u32) 0x00000001) 267 #define SND_AUDIOMODE_G723_1_ANNEX_B ((__u32) 0x00000002) 268 #define SND_AUDIOMODE_G723_1_ANNEX_C ((__u32) 0x00000004) 269 270 #define SND_AUDIOPROFILE_G729 ((__u32) 0x00000001) 271 272 #define SND_AUDIOMODE_G729_ANNEX_A ((__u32) 0x00000001) 273 #define SND_AUDIOMODE_G729_ANNEX_B ((__u32) 0x00000002) 274 275 /* <FIXME: multichannel encoders aren't supported for now. Would need 276 an additional definition of channel arrangement> */ 277 278 /* VBR/CBR definitions */ 279 #define SND_RATECONTROLMODE_CONSTANTBITRATE ((__u32) 0x00000001) 280 #define SND_RATECONTROLMODE_VARIABLEBITRATE ((__u32) 0x00000002) 281 282 /* Encoder options */ 283 284 struct snd_enc_wma { 285 __u32 super_block_align; /* WMA Type-specific data */ 286 __u32 bits_per_sample; 287 __u32 channelmask; 288 __u32 encodeopt; 289 __u32 encodeopt1; 290 __u32 encodeopt2; 291 __u32 avg_bit_rate; 292 }; 293 294 295 /** 296 * struct snd_enc_vorbis 297 * @quality: Sets encoding quality to n, between -1 (low) and 10 (high). 298 * In the default mode of operation, the quality level is 3. 299 * Normal quality range is 0 - 10. 300 * @managed: Boolean. Set bitrate management mode. This turns off the 301 * normal VBR encoding, but allows hard or soft bitrate constraints to be 302 * enforced by the encoder. This mode can be slower, and may also be 303 * lower quality. It is primarily useful for streaming. 304 * @max_bit_rate: Enabled only if managed is TRUE 305 * @min_bit_rate: Enabled only if managed is TRUE 306 * @downmix: Boolean. Downmix input from stereo to mono (has no effect on 307 * non-stereo streams). Useful for lower-bitrate encoding. 308 * 309 * These options were extracted from the OpenMAX IL spec and Gstreamer vorbisenc 310 * properties 311 * 312 * For best quality users should specify VBR mode and set quality levels. 313 */ 314 315 struct snd_enc_vorbis { 316 __s32 quality; 317 __u32 managed; 318 __u32 max_bit_rate; 319 __u32 min_bit_rate; 320 __u32 downmix; 321 } __attribute__((packed, aligned(4))); 322 323 324 /** 325 * struct snd_enc_real 326 * @quant_bits: number of coupling quantization bits in the stream 327 * @start_region: coupling start region in the stream 328 * @num_regions: number of regions value 329 * 330 * These options were extracted from the OpenMAX IL spec 331 */ 332 333 struct snd_enc_real { 334 __u32 quant_bits; 335 __u32 start_region; 336 __u32 num_regions; 337 } __attribute__((packed, aligned(4))); 338 339 /** 340 * struct snd_enc_flac 341 * @num: serial number, valid only for OGG formats 342 * needs to be set by application 343 * @gain: Add replay gain tags 344 * 345 * These options were extracted from the FLAC online documentation 346 * at http://flac.sourceforge.net/documentation_tools_flac.html 347 * 348 * To make the API simpler, it is assumed that the user will select quality 349 * profiles. Additional options that affect encoding quality and speed can 350 * be added at a later stage if needed. 351 * 352 * By default the Subset format is used by encoders. 353 * 354 * TAGS such as pictures, etc, cannot be handled by an offloaded encoder and are 355 * not supported in this API. 356 */ 357 358 struct snd_enc_flac { 359 __u32 num; 360 __u32 gain; 361 } __attribute__((packed, aligned(4))); 362 363 struct snd_enc_generic { 364 __u32 bw; /* encoder bandwidth */ 365 __s32 reserved[15]; /* Can be used for SND_AUDIOCODEC_BESPOKE */ 366 } __attribute__((packed, aligned(4))); 367 368 struct snd_dec_ddp { 369 __u32 params_length; 370 __u32 params_id[SND_DEC_DDP_MAX_PARAMS]; 371 __u32 params_value[SND_DEC_DDP_MAX_PARAMS]; 372 } __attribute__((packed, aligned(4))); 373 374 #define SND_DEC_THD_MAX_PARAMS 8 375 struct snd_dec_thd { 376 __u32 params_length; 377 __u32 params_id[SND_DEC_THD_MAX_PARAMS]; 378 __u32 params_value[SND_DEC_THD_MAX_PARAMS]; 379 } __attribute__((packed, aligned(4))); 380 381 struct snd_dec_flac { 382 __u16 sample_size; 383 __u16 min_blk_size; 384 __u16 max_blk_size; 385 __u16 min_frame_size; 386 __u16 max_frame_size; 387 } __attribute__((packed, aligned(4))); 388 389 struct snd_dec_vorbis { 390 __u32 bit_stream_fmt; 391 }; 392 393 struct snd_dec_alac { 394 __u32 frame_length; 395 __u8 compatible_version; 396 __u8 bit_depth; 397 __u8 pb; 398 __u8 mb; 399 __u8 kb; 400 __u8 num_channels; 401 __u16 max_run; 402 __u32 max_frame_bytes; 403 __u32 avg_bit_rate; 404 __u32 sample_rate; 405 __u32 channel_layout_tag; 406 }; 407 408 struct snd_dec_ape { 409 __u16 compatible_version; 410 __u16 compression_level; 411 __u32 format_flags; 412 __u32 blocks_per_frame; 413 __u32 final_frame_blocks; 414 __u32 total_frames; 415 __u16 bits_per_sample; 416 __u16 num_channels; 417 __u32 sample_rate; 418 __u32 seek_table_present; 419 }; 420 421 struct snd_dec_aptx { 422 __u32 lap; 423 __u32 uap; 424 __u32 nap; 425 }; 426 427 /** struct snd_dec_dsd - codec for DSD format 428 * @blk_size - dsd channel block size 429 */ 430 struct snd_dec_dsd { 431 __u32 blk_size; 432 }; 433 434 /** struct snd_dec_pcm - codec options for PCM format 435 * @num_channels: Number of channels 436 * @ch_map: Channel map for the above corresponding channels 437 */ 438 struct snd_dec_pcm { 439 __u32 num_channels; 440 __u8 ch_map[MAX_PCM_DECODE_CHANNELS]; 441 } __attribute__((packed, aligned(4))); 442 443 struct snd_dec_amrwb_plus { 444 __u32 bit_stream_fmt; 445 }; 446 447 union snd_codec_options { 448 struct snd_enc_wma wma; 449 struct snd_enc_vorbis vorbis; 450 struct snd_enc_real real; 451 struct snd_enc_flac flac; 452 struct snd_enc_generic generic; 453 struct snd_dec_ddp ddp; 454 struct snd_dec_flac flac_dec; 455 struct snd_dec_vorbis vorbis_dec; 456 struct snd_dec_alac alac; 457 struct snd_dec_ape ape; 458 struct snd_dec_aptx aptx_dec; 459 struct snd_dec_thd truehd; 460 struct snd_dec_pcm pcm_dec; 461 struct snd_dec_amrwb_plus amrwbplus; 462 struct snd_dec_dsd dsd_dec; 463 }; 464 465 /** struct snd_codec_desc - description of codec capabilities 466 * @max_ch: Maximum number of audio channels 467 * @sample_rates: Sampling rates in Hz, use values like 48000 for this 468 * @num_sample_rates: Number of valid values in sample_rates array 469 * @bit_rate: Indexed array containing supported bit rates 470 * @num_bitrates: Number of valid values in bit_rate array 471 * @rate_control: value is specified by SND_RATECONTROLMODE defines. 472 * @profiles: Supported profiles. See SND_AUDIOPROFILE defines. 473 * @modes: Supported modes. See SND_AUDIOMODE defines 474 * @formats: Supported formats. See SND_AUDIOSTREAMFORMAT defines 475 * @min_buffer: Minimum buffer size handled by codec implementation 476 * @reserved: reserved for future use 477 * 478 * This structure provides a scalar value for profiles, modes and stream 479 * format fields. 480 * If an implementation supports multiple combinations, they will be listed as 481 * codecs with different descriptors, for example there would be 2 descriptors 482 * for AAC-RAW and AAC-ADTS. 483 * This entails some redundancy but makes it easier to avoid invalid 484 * configurations. 485 * 486 */ 487 488 struct snd_codec_desc { 489 __u32 max_ch; 490 __u32 sample_rates[MAX_NUM_SAMPLE_RATES]; 491 __u32 num_sample_rates; 492 __u32 bit_rate[MAX_NUM_BITRATES]; 493 __u32 num_bitrates; 494 __u32 rate_control; 495 __u32 profiles; 496 __u32 modes; 497 __u32 formats; 498 __u32 min_buffer; 499 __u32 reserved[15]; 500 } __attribute__((packed, aligned(4))); 501 502 /** struct snd_codec 503 * @id: Identifies the supported audio encoder/decoder. 504 * See SND_AUDIOCODEC macros. 505 * @ch_in: Number of input audio channels 506 * @ch_out: Number of output channels. In case of contradiction between 507 * this field and the channelMode field, the channelMode field 508 * overrides. 509 * @sample_rate: Audio sample rate of input data in Hz, use values like 48000 510 * for this. 511 * @bit_rate: Bitrate of encoded data. May be ignored by decoders 512 * @rate_control: Encoding rate control. See SND_RATECONTROLMODE defines. 513 * Encoders may rely on profiles for quality levels. 514 * May be ignored by decoders. 515 * @profile: Mandatory for encoders, can be mandatory for specific 516 * decoders as well. See SND_AUDIOPROFILE defines. 517 * @level: Supported level (Only used by WMA at the moment) 518 * @ch_mode: Channel mode for encoder. See SND_AUDIOCHANMODE defines 519 * @format: Format of encoded bistream. Mandatory when defined. 520 * See SND_AUDIOSTREAMFORMAT defines. 521 * @align: Block alignment in bytes of an audio sample. 522 * Only required for PCM or IEC formats. 523 * @options: encoder-specific settings 524 * @compr_passthr: compressed bitstream passthrough 525 * @reserved: reserved for future use 526 */ 527 528 struct snd_codec { 529 __u32 id; 530 __u32 ch_in; 531 __u32 ch_out; 532 __u32 sample_rate; 533 __u32 bit_rate; 534 __u32 rate_control; 535 __u32 profile; 536 __u32 level; 537 __u32 ch_mode; 538 __u32 format; 539 __u32 align; 540 union snd_codec_options options; 541 __u32 compr_passthr; 542 __u32 flags; 543 __u32 reserved[1]; 544 } __attribute__((packed, aligned(4))); 545 546 547 /** struct snd_codec_metadata 548 * @length: Length of the encoded buffer. 549 * @offset: Offset from the buffer address to the first byte of the first 550 * encoded frame. All encoded frames are consecutive starting 551 * from this offset. 552 * @timestamp: Session time in microseconds of the first sample in the buffer. 553 * @reserved: Reserved for future use. 554 */ 555 struct snd_codec_metadata { 556 __u32 length; 557 __u32 offset; 558 __u64 timestamp; 559 __u32 flags; 560 __u32 reserved[3]; 561 }; 562 563 #endif 564