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