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e2be04c7 | 1 | /* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) AND MIT) */ |
50c34cfe VK |
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 | * | |
50c34cfe VK |
10 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
11 | * | |
12 | * The definitions in this file are derived from the OpenMAX AL version 1.1 | |
69ab6f5b CJ |
13 | * and OpenMAX IL v 1.1.2 header files which contain the copyright notice below |
14 | * and are licensed under the MIT license. | |
50c34cfe VK |
15 | * |
16 | * Copyright (c) 2007-2010 The Khronos Group Inc. | |
50c34cfe VK |
17 | */ |
18 | #ifndef __SND_COMPRESS_PARAMS_H | |
19 | #define __SND_COMPRESS_PARAMS_H | |
20 | ||
10db4e1e BP |
21 | #include <linux/types.h> |
22 | ||
50c34cfe VK |
23 | /* AUDIO CODECS SUPPORTED */ |
24 | #define MAX_NUM_CODECS 32 | |
25 | #define MAX_NUM_CODEC_DESCRIPTORS 32 | |
26 | #define MAX_NUM_BITRATES 32 | |
b8bab048 | 27 | #define MAX_NUM_SAMPLE_RATES 32 |
50c34cfe VK |
28 | |
29 | /* Codecs are listed linearly to allow for extensibility */ | |
30 | #define SND_AUDIOCODEC_PCM ((__u32) 0x00000001) | |
31 | #define SND_AUDIOCODEC_MP3 ((__u32) 0x00000002) | |
32 | #define SND_AUDIOCODEC_AMR ((__u32) 0x00000003) | |
33 | #define SND_AUDIOCODEC_AMRWB ((__u32) 0x00000004) | |
34 | #define SND_AUDIOCODEC_AMRWBPLUS ((__u32) 0x00000005) | |
35 | #define SND_AUDIOCODEC_AAC ((__u32) 0x00000006) | |
36 | #define SND_AUDIOCODEC_WMA ((__u32) 0x00000007) | |
37 | #define SND_AUDIOCODEC_REAL ((__u32) 0x00000008) | |
38 | #define SND_AUDIOCODEC_VORBIS ((__u32) 0x00000009) | |
39 | #define SND_AUDIOCODEC_FLAC ((__u32) 0x0000000A) | |
40 | #define SND_AUDIOCODEC_IEC61937 ((__u32) 0x0000000B) | |
41 | #define SND_AUDIOCODEC_G723_1 ((__u32) 0x0000000C) | |
42 | #define SND_AUDIOCODEC_G729 ((__u32) 0x0000000D) | |
dbb6b943 | 43 | #define SND_AUDIOCODEC_BESPOKE ((__u32) 0x0000000E) |
0f546d6f VK |
44 | #define SND_AUDIOCODEC_ALAC ((__u32) 0x0000000F) |
45 | #define SND_AUDIOCODEC_APE ((__u32) 0x00000010) | |
46 | #define SND_AUDIOCODEC_MAX SND_AUDIOCODEC_APE | |
50c34cfe VK |
47 | |
48 | /* | |
49 | * Profile and modes are listed with bit masks. This allows for a | |
50 | * more compact representation of fields that will not evolve | |
51 | * (in contrast to the list of codecs) | |
52 | */ | |
53 | ||
54 | #define SND_AUDIOPROFILE_PCM ((__u32) 0x00000001) | |
55 | ||
56 | /* MP3 modes are only useful for encoders */ | |
57 | #define SND_AUDIOCHANMODE_MP3_MONO ((__u32) 0x00000001) | |
58 | #define SND_AUDIOCHANMODE_MP3_STEREO ((__u32) 0x00000002) | |
59 | #define SND_AUDIOCHANMODE_MP3_JOINTSTEREO ((__u32) 0x00000004) | |
60 | #define SND_AUDIOCHANMODE_MP3_DUAL ((__u32) 0x00000008) | |
61 | ||
62 | #define SND_AUDIOPROFILE_AMR ((__u32) 0x00000001) | |
63 | ||
64 | /* AMR modes are only useful for encoders */ | |
65 | #define SND_AUDIOMODE_AMR_DTX_OFF ((__u32) 0x00000001) | |
66 | #define SND_AUDIOMODE_AMR_VAD1 ((__u32) 0x00000002) | |
67 | #define SND_AUDIOMODE_AMR_VAD2 ((__u32) 0x00000004) | |
68 | ||
69 | #define SND_AUDIOSTREAMFORMAT_UNDEFINED ((__u32) 0x00000000) | |
70 | #define SND_AUDIOSTREAMFORMAT_CONFORMANCE ((__u32) 0x00000001) | |
71 | #define SND_AUDIOSTREAMFORMAT_IF1 ((__u32) 0x00000002) | |
72 | #define SND_AUDIOSTREAMFORMAT_IF2 ((__u32) 0x00000004) | |
73 | #define SND_AUDIOSTREAMFORMAT_FSF ((__u32) 0x00000008) | |
74 | #define SND_AUDIOSTREAMFORMAT_RTPPAYLOAD ((__u32) 0x00000010) | |
75 | #define SND_AUDIOSTREAMFORMAT_ITU ((__u32) 0x00000020) | |
76 | ||
77 | #define SND_AUDIOPROFILE_AMRWB ((__u32) 0x00000001) | |
78 | ||
79 | /* AMRWB modes are only useful for encoders */ | |
80 | #define SND_AUDIOMODE_AMRWB_DTX_OFF ((__u32) 0x00000001) | |
81 | #define SND_AUDIOMODE_AMRWB_VAD1 ((__u32) 0x00000002) | |
82 | #define SND_AUDIOMODE_AMRWB_VAD2 ((__u32) 0x00000004) | |
83 | ||
84 | #define SND_AUDIOPROFILE_AMRWBPLUS ((__u32) 0x00000001) | |
85 | ||
86 | #define SND_AUDIOPROFILE_AAC ((__u32) 0x00000001) | |
87 | ||
88 | /* AAC modes are required for encoders and decoders */ | |
89 | #define SND_AUDIOMODE_AAC_MAIN ((__u32) 0x00000001) | |
90 | #define SND_AUDIOMODE_AAC_LC ((__u32) 0x00000002) | |
91 | #define SND_AUDIOMODE_AAC_SSR ((__u32) 0x00000004) | |
92 | #define SND_AUDIOMODE_AAC_LTP ((__u32) 0x00000008) | |
93 | #define SND_AUDIOMODE_AAC_HE ((__u32) 0x00000010) | |
94 | #define SND_AUDIOMODE_AAC_SCALABLE ((__u32) 0x00000020) | |
95 | #define SND_AUDIOMODE_AAC_ERLC ((__u32) 0x00000040) | |
96 | #define SND_AUDIOMODE_AAC_LD ((__u32) 0x00000080) | |
97 | #define SND_AUDIOMODE_AAC_HE_PS ((__u32) 0x00000100) | |
98 | #define SND_AUDIOMODE_AAC_HE_MPS ((__u32) 0x00000200) | |
99 | ||
100 | /* AAC formats are required for encoders and decoders */ | |
101 | #define SND_AUDIOSTREAMFORMAT_MP2ADTS ((__u32) 0x00000001) | |
102 | #define SND_AUDIOSTREAMFORMAT_MP4ADTS ((__u32) 0x00000002) | |
103 | #define SND_AUDIOSTREAMFORMAT_MP4LOAS ((__u32) 0x00000004) | |
104 | #define SND_AUDIOSTREAMFORMAT_MP4LATM ((__u32) 0x00000008) | |
105 | #define SND_AUDIOSTREAMFORMAT_ADIF ((__u32) 0x00000010) | |
106 | #define SND_AUDIOSTREAMFORMAT_MP4FF ((__u32) 0x00000020) | |
107 | #define SND_AUDIOSTREAMFORMAT_RAW ((__u32) 0x00000040) | |
108 | ||
109 | #define SND_AUDIOPROFILE_WMA7 ((__u32) 0x00000001) | |
110 | #define SND_AUDIOPROFILE_WMA8 ((__u32) 0x00000002) | |
111 | #define SND_AUDIOPROFILE_WMA9 ((__u32) 0x00000004) | |
112 | #define SND_AUDIOPROFILE_WMA10 ((__u32) 0x00000008) | |
3bd7ac41 VK |
113 | #define SND_AUDIOPROFILE_WMA9_PRO ((__u32) 0x00000010) |
114 | #define SND_AUDIOPROFILE_WMA9_LOSSLESS ((__u32) 0x00000020) | |
115 | #define SND_AUDIOPROFILE_WMA10_LOSSLESS ((__u32) 0x00000040) | |
50c34cfe VK |
116 | |
117 | #define SND_AUDIOMODE_WMA_LEVEL1 ((__u32) 0x00000001) | |
118 | #define SND_AUDIOMODE_WMA_LEVEL2 ((__u32) 0x00000002) | |
119 | #define SND_AUDIOMODE_WMA_LEVEL3 ((__u32) 0x00000004) | |
120 | #define SND_AUDIOMODE_WMA_LEVEL4 ((__u32) 0x00000008) | |
121 | #define SND_AUDIOMODE_WMAPRO_LEVELM0 ((__u32) 0x00000010) | |
122 | #define SND_AUDIOMODE_WMAPRO_LEVELM1 ((__u32) 0x00000020) | |
123 | #define SND_AUDIOMODE_WMAPRO_LEVELM2 ((__u32) 0x00000040) | |
124 | #define SND_AUDIOMODE_WMAPRO_LEVELM3 ((__u32) 0x00000080) | |
125 | ||
126 | #define SND_AUDIOSTREAMFORMAT_WMA_ASF ((__u32) 0x00000001) | |
127 | /* | |
128 | * Some implementations strip the ASF header and only send ASF packets | |
129 | * to the DSP | |
130 | */ | |
131 | #define SND_AUDIOSTREAMFORMAT_WMA_NOASF_HDR ((__u32) 0x00000002) | |
132 | ||
133 | #define SND_AUDIOPROFILE_REALAUDIO ((__u32) 0x00000001) | |
134 | ||
135 | #define SND_AUDIOMODE_REALAUDIO_G2 ((__u32) 0x00000001) | |
136 | #define SND_AUDIOMODE_REALAUDIO_8 ((__u32) 0x00000002) | |
137 | #define SND_AUDIOMODE_REALAUDIO_10 ((__u32) 0x00000004) | |
138 | #define SND_AUDIOMODE_REALAUDIO_SURROUND ((__u32) 0x00000008) | |
139 | ||
140 | #define SND_AUDIOPROFILE_VORBIS ((__u32) 0x00000001) | |
141 | ||
142 | #define SND_AUDIOMODE_VORBIS ((__u32) 0x00000001) | |
143 | ||
144 | #define SND_AUDIOPROFILE_FLAC ((__u32) 0x00000001) | |
145 | ||
146 | /* | |
147 | * Define quality levels for FLAC encoders, from LEVEL0 (fast) | |
148 | * to LEVEL8 (best) | |
149 | */ | |
150 | #define SND_AUDIOMODE_FLAC_LEVEL0 ((__u32) 0x00000001) | |
151 | #define SND_AUDIOMODE_FLAC_LEVEL1 ((__u32) 0x00000002) | |
152 | #define SND_AUDIOMODE_FLAC_LEVEL2 ((__u32) 0x00000004) | |
153 | #define SND_AUDIOMODE_FLAC_LEVEL3 ((__u32) 0x00000008) | |
154 | #define SND_AUDIOMODE_FLAC_LEVEL4 ((__u32) 0x00000010) | |
155 | #define SND_AUDIOMODE_FLAC_LEVEL5 ((__u32) 0x00000020) | |
156 | #define SND_AUDIOMODE_FLAC_LEVEL6 ((__u32) 0x00000040) | |
157 | #define SND_AUDIOMODE_FLAC_LEVEL7 ((__u32) 0x00000080) | |
158 | #define SND_AUDIOMODE_FLAC_LEVEL8 ((__u32) 0x00000100) | |
159 | ||
160 | #define SND_AUDIOSTREAMFORMAT_FLAC ((__u32) 0x00000001) | |
161 | #define SND_AUDIOSTREAMFORMAT_FLAC_OGG ((__u32) 0x00000002) | |
162 | ||
163 | /* IEC61937 payloads without CUVP and preambles */ | |
164 | #define SND_AUDIOPROFILE_IEC61937 ((__u32) 0x00000001) | |
165 | /* IEC61937 with S/PDIF preambles+CUVP bits in 32-bit containers */ | |
166 | #define SND_AUDIOPROFILE_IEC61937_SPDIF ((__u32) 0x00000002) | |
167 | ||
168 | /* | |
169 | * IEC modes are mandatory for decoders. Format autodetection | |
170 | * will only happen on the DSP side with mode 0. The PCM mode should | |
171 | * not be used, the PCM codec should be used instead. | |
172 | */ | |
173 | #define SND_AUDIOMODE_IEC_REF_STREAM_HEADER ((__u32) 0x00000000) | |
174 | #define SND_AUDIOMODE_IEC_LPCM ((__u32) 0x00000001) | |
175 | #define SND_AUDIOMODE_IEC_AC3 ((__u32) 0x00000002) | |
176 | #define SND_AUDIOMODE_IEC_MPEG1 ((__u32) 0x00000004) | |
177 | #define SND_AUDIOMODE_IEC_MP3 ((__u32) 0x00000008) | |
178 | #define SND_AUDIOMODE_IEC_MPEG2 ((__u32) 0x00000010) | |
179 | #define SND_AUDIOMODE_IEC_AACLC ((__u32) 0x00000020) | |
180 | #define SND_AUDIOMODE_IEC_DTS ((__u32) 0x00000040) | |
181 | #define SND_AUDIOMODE_IEC_ATRAC ((__u32) 0x00000080) | |
182 | #define SND_AUDIOMODE_IEC_SACD ((__u32) 0x00000100) | |
183 | #define SND_AUDIOMODE_IEC_EAC3 ((__u32) 0x00000200) | |
184 | #define SND_AUDIOMODE_IEC_DTS_HD ((__u32) 0x00000400) | |
185 | #define SND_AUDIOMODE_IEC_MLP ((__u32) 0x00000800) | |
186 | #define SND_AUDIOMODE_IEC_DST ((__u32) 0x00001000) | |
187 | #define SND_AUDIOMODE_IEC_WMAPRO ((__u32) 0x00002000) | |
188 | #define SND_AUDIOMODE_IEC_REF_CXT ((__u32) 0x00004000) | |
189 | #define SND_AUDIOMODE_IEC_HE_AAC ((__u32) 0x00008000) | |
190 | #define SND_AUDIOMODE_IEC_HE_AAC2 ((__u32) 0x00010000) | |
191 | #define SND_AUDIOMODE_IEC_MPEG_SURROUND ((__u32) 0x00020000) | |
192 | ||
193 | #define SND_AUDIOPROFILE_G723_1 ((__u32) 0x00000001) | |
194 | ||
195 | #define SND_AUDIOMODE_G723_1_ANNEX_A ((__u32) 0x00000001) | |
196 | #define SND_AUDIOMODE_G723_1_ANNEX_B ((__u32) 0x00000002) | |
197 | #define SND_AUDIOMODE_G723_1_ANNEX_C ((__u32) 0x00000004) | |
198 | ||
199 | #define SND_AUDIOPROFILE_G729 ((__u32) 0x00000001) | |
200 | ||
201 | #define SND_AUDIOMODE_G729_ANNEX_A ((__u32) 0x00000001) | |
202 | #define SND_AUDIOMODE_G729_ANNEX_B ((__u32) 0x00000002) | |
203 | ||
204 | /* <FIXME: multichannel encoders aren't supported for now. Would need | |
205 | an additional definition of channel arrangement> */ | |
206 | ||
207 | /* VBR/CBR definitions */ | |
208 | #define SND_RATECONTROLMODE_CONSTANTBITRATE ((__u32) 0x00000001) | |
209 | #define SND_RATECONTROLMODE_VARIABLEBITRATE ((__u32) 0x00000002) | |
210 | ||
211 | /* Encoder options */ | |
212 | ||
213 | struct snd_enc_wma { | |
214 | __u32 super_block_align; /* WMA Type-specific data */ | |
215 | }; | |
216 | ||
217 | ||
218 | /** | |
b05d834e | 219 | * struct snd_enc_vorbis - Vorbis encoder parameters |
50c34cfe VK |
220 | * @quality: Sets encoding quality to n, between -1 (low) and 10 (high). |
221 | * In the default mode of operation, the quality level is 3. | |
222 | * Normal quality range is 0 - 10. | |
223 | * @managed: Boolean. Set bitrate management mode. This turns off the | |
224 | * normal VBR encoding, but allows hard or soft bitrate constraints to be | |
225 | * enforced by the encoder. This mode can be slower, and may also be | |
226 | * lower quality. It is primarily useful for streaming. | |
227 | * @max_bit_rate: Enabled only if managed is TRUE | |
228 | * @min_bit_rate: Enabled only if managed is TRUE | |
229 | * @downmix: Boolean. Downmix input from stereo to mono (has no effect on | |
230 | * non-stereo streams). Useful for lower-bitrate encoding. | |
231 | * | |
232 | * These options were extracted from the OpenMAX IL spec and Gstreamer vorbisenc | |
233 | * properties | |
234 | * | |
235 | * For best quality users should specify VBR mode and set quality levels. | |
236 | */ | |
237 | ||
238 | struct snd_enc_vorbis { | |
239 | __s32 quality; | |
240 | __u32 managed; | |
241 | __u32 max_bit_rate; | |
242 | __u32 min_bit_rate; | |
243 | __u32 downmix; | |
2da38e0c | 244 | } __attribute__((packed, aligned(4))); |
50c34cfe VK |
245 | |
246 | ||
247 | /** | |
b05d834e | 248 | * struct snd_enc_real - RealAudio encoder parameters |
50c34cfe VK |
249 | * @quant_bits: number of coupling quantization bits in the stream |
250 | * @start_region: coupling start region in the stream | |
251 | * @num_regions: number of regions value | |
252 | * | |
253 | * These options were extracted from the OpenMAX IL spec | |
254 | */ | |
255 | ||
256 | struct snd_enc_real { | |
257 | __u32 quant_bits; | |
258 | __u32 start_region; | |
259 | __u32 num_regions; | |
2da38e0c | 260 | } __attribute__((packed, aligned(4))); |
50c34cfe VK |
261 | |
262 | /** | |
b05d834e | 263 | * struct snd_enc_flac - FLAC encoder parameters |
50c34cfe VK |
264 | * @num: serial number, valid only for OGG formats |
265 | * needs to be set by application | |
266 | * @gain: Add replay gain tags | |
267 | * | |
268 | * These options were extracted from the FLAC online documentation | |
269 | * at http://flac.sourceforge.net/documentation_tools_flac.html | |
270 | * | |
271 | * To make the API simpler, it is assumed that the user will select quality | |
272 | * profiles. Additional options that affect encoding quality and speed can | |
273 | * be added at a later stage if needed. | |
274 | * | |
275 | * By default the Subset format is used by encoders. | |
276 | * | |
277 | * TAGS such as pictures, etc, cannot be handled by an offloaded encoder and are | |
278 | * not supported in this API. | |
279 | */ | |
280 | ||
281 | struct snd_enc_flac { | |
282 | __u32 num; | |
283 | __u32 gain; | |
2da38e0c | 284 | } __attribute__((packed, aligned(4))); |
50c34cfe VK |
285 | |
286 | struct snd_enc_generic { | |
287 | __u32 bw; /* encoder bandwidth */ | |
dbb6b943 | 288 | __s32 reserved[15]; /* Can be used for SND_AUDIOCODEC_BESPOKE */ |
2da38e0c | 289 | } __attribute__((packed, aligned(4))); |
50c34cfe | 290 | |
d2522335 VK |
291 | struct snd_dec_flac { |
292 | __u16 sample_size; | |
293 | __u16 min_blk_size; | |
294 | __u16 max_blk_size; | |
295 | __u16 min_frame_size; | |
296 | __u16 max_frame_size; | |
297 | __u16 reserved; | |
298 | } __attribute__((packed, aligned(4))); | |
299 | ||
20ff1456 VK |
300 | struct snd_dec_wma { |
301 | __u32 encoder_option; | |
302 | __u32 adv_encoder_option; | |
303 | __u32 adv_encoder_option2; | |
304 | __u32 reserved; | |
305 | } __attribute__((packed, aligned(4))); | |
306 | ||
0f546d6f VK |
307 | struct snd_dec_alac { |
308 | __u32 frame_length; | |
309 | __u8 compatible_version; | |
310 | __u8 pb; | |
311 | __u8 mb; | |
312 | __u8 kb; | |
313 | __u32 max_run; | |
314 | __u32 max_frame_bytes; | |
315 | } __attribute__((packed, aligned(4))); | |
316 | ||
317 | struct snd_dec_ape { | |
318 | __u16 compatible_version; | |
319 | __u16 compression_level; | |
320 | __u32 format_flags; | |
321 | __u32 blocks_per_frame; | |
322 | __u32 final_frame_blocks; | |
323 | __u32 total_frames; | |
324 | __u32 seek_table_present; | |
325 | } __attribute__((packed, aligned(4))); | |
326 | ||
50c34cfe VK |
327 | union snd_codec_options { |
328 | struct snd_enc_wma wma; | |
329 | struct snd_enc_vorbis vorbis; | |
330 | struct snd_enc_real real; | |
331 | struct snd_enc_flac flac; | |
332 | struct snd_enc_generic generic; | |
d2522335 | 333 | struct snd_dec_flac flac_d; |
20ff1456 | 334 | struct snd_dec_wma wma_d; |
0f546d6f VK |
335 | struct snd_dec_alac alac_d; |
336 | struct snd_dec_ape ape_d; | |
2da38e0c | 337 | } __attribute__((packed, aligned(4))); |
50c34cfe VK |
338 | |
339 | /** struct snd_codec_desc - description of codec capabilities | |
340 | * @max_ch: Maximum number of audio channels | |
f0e9c080 | 341 | * @sample_rates: Sampling rates in Hz, use values like 48000 for this |
929559be | 342 | * @num_sample_rates: Number of valid values in sample_rates array |
50c34cfe VK |
343 | * @bit_rate: Indexed array containing supported bit rates |
344 | * @num_bitrates: Number of valid values in bit_rate array | |
345 | * @rate_control: value is specified by SND_RATECONTROLMODE defines. | |
346 | * @profiles: Supported profiles. See SND_AUDIOPROFILE defines. | |
347 | * @modes: Supported modes. See SND_AUDIOMODE defines | |
348 | * @formats: Supported formats. See SND_AUDIOSTREAMFORMAT defines | |
349 | * @min_buffer: Minimum buffer size handled by codec implementation | |
350 | * @reserved: reserved for future use | |
351 | * | |
352 | * This structure provides a scalar value for profiles, modes and stream | |
353 | * format fields. | |
354 | * If an implementation supports multiple combinations, they will be listed as | |
355 | * codecs with different descriptors, for example there would be 2 descriptors | |
356 | * for AAC-RAW and AAC-ADTS. | |
357 | * This entails some redundancy but makes it easier to avoid invalid | |
358 | * configurations. | |
359 | * | |
360 | */ | |
361 | ||
362 | struct snd_codec_desc { | |
363 | __u32 max_ch; | |
b8bab048 | 364 | __u32 sample_rates[MAX_NUM_SAMPLE_RATES]; |
929559be | 365 | __u32 num_sample_rates; |
50c34cfe VK |
366 | __u32 bit_rate[MAX_NUM_BITRATES]; |
367 | __u32 num_bitrates; | |
368 | __u32 rate_control; | |
369 | __u32 profiles; | |
370 | __u32 modes; | |
371 | __u32 formats; | |
372 | __u32 min_buffer; | |
373 | __u32 reserved[15]; | |
2da38e0c | 374 | } __attribute__((packed, aligned(4))); |
50c34cfe VK |
375 | |
376 | /** struct snd_codec | |
377 | * @id: Identifies the supported audio encoder/decoder. | |
378 | * See SND_AUDIOCODEC macros. | |
379 | * @ch_in: Number of input audio channels | |
380 | * @ch_out: Number of output channels. In case of contradiction between | |
381 | * this field and the channelMode field, the channelMode field | |
382 | * overrides. | |
d9afee69 VK |
383 | * @sample_rate: Audio sample rate of input data in Hz, use values like 48000 |
384 | * for this. | |
50c34cfe VK |
385 | * @bit_rate: Bitrate of encoded data. May be ignored by decoders |
386 | * @rate_control: Encoding rate control. See SND_RATECONTROLMODE defines. | |
387 | * Encoders may rely on profiles for quality levels. | |
388 | * May be ignored by decoders. | |
389 | * @profile: Mandatory for encoders, can be mandatory for specific | |
390 | * decoders as well. See SND_AUDIOPROFILE defines. | |
391 | * @level: Supported level (Only used by WMA at the moment) | |
392 | * @ch_mode: Channel mode for encoder. See SND_AUDIOCHANMODE defines | |
393 | * @format: Format of encoded bistream. Mandatory when defined. | |
394 | * See SND_AUDIOSTREAMFORMAT defines. | |
395 | * @align: Block alignment in bytes of an audio sample. | |
396 | * Only required for PCM or IEC formats. | |
397 | * @options: encoder-specific settings | |
398 | * @reserved: reserved for future use | |
399 | */ | |
400 | ||
401 | struct snd_codec { | |
402 | __u32 id; | |
403 | __u32 ch_in; | |
404 | __u32 ch_out; | |
405 | __u32 sample_rate; | |
406 | __u32 bit_rate; | |
407 | __u32 rate_control; | |
408 | __u32 profile; | |
409 | __u32 level; | |
410 | __u32 ch_mode; | |
411 | __u32 format; | |
412 | __u32 align; | |
413 | union snd_codec_options options; | |
414 | __u32 reserved[3]; | |
2da38e0c | 415 | } __attribute__((packed, aligned(4))); |
50c34cfe VK |
416 | |
417 | #endif |