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50c34cfe VK |
1 | /* |
2 | * compress_params.h - codec types and parameters for compressed data | |
3 | * streaming interface | |
4 | * | |
5 | * Copyright (C) 2011 Intel Corporation | |
6 | * Authors: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> | |
7 | * Vinod Koul <vinod.koul@linux.intel.com> | |
8 | * | |
9 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
10 | * | |
11 | * This program is free software; you can redistribute it and/or modify | |
12 | * it under the terms of the GNU General Public License as published by | |
13 | * the Free Software Foundation; version 2 of the License. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, but | |
16 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
18 | * General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public License along | |
21 | * with this program; if not, write to the Free Software Foundation, Inc., | |
22 | * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. | |
23 | * | |
24 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
25 | * | |
26 | * The definitions in this file are derived from the OpenMAX AL version 1.1 | |
27 | * and OpenMAX IL v 1.1.2 header files which contain the copyright notice below. | |
28 | * | |
29 | * Copyright (c) 2007-2010 The Khronos Group Inc. | |
30 | * | |
31 | * Permission is hereby granted, free of charge, to any person obtaining | |
32 | * a copy of this software and/or associated documentation files (the | |
33 | * "Materials "), to deal in the Materials without restriction, including | |
34 | * without limitation the rights to use, copy, modify, merge, publish, | |
35 | * distribute, sublicense, and/or sell copies of the Materials, and to | |
36 | * permit persons to whom the Materials are furnished to do so, subject to | |
37 | * the following conditions: | |
38 | * | |
39 | * The above copyright notice and this permission notice shall be included | |
40 | * in all copies or substantial portions of the Materials. | |
41 | * | |
42 | * THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS | |
43 | * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
44 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. | |
45 | * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY | |
46 | * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, | |
47 | * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE | |
48 | * MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS. | |
49 | * | |
50 | */ | |
51 | #ifndef __SND_COMPRESS_PARAMS_H | |
52 | #define __SND_COMPRESS_PARAMS_H | |
53 | ||
10db4e1e BP |
54 | #include <linux/types.h> |
55 | ||
50c34cfe VK |
56 | /* AUDIO CODECS SUPPORTED */ |
57 | #define MAX_NUM_CODECS 32 | |
58 | #define MAX_NUM_CODEC_DESCRIPTORS 32 | |
59 | #define MAX_NUM_BITRATES 32 | |
b8bab048 | 60 | #define MAX_NUM_SAMPLE_RATES 32 |
50c34cfe VK |
61 | |
62 | /* Codecs are listed linearly to allow for extensibility */ | |
63 | #define SND_AUDIOCODEC_PCM ((__u32) 0x00000001) | |
64 | #define SND_AUDIOCODEC_MP3 ((__u32) 0x00000002) | |
65 | #define SND_AUDIOCODEC_AMR ((__u32) 0x00000003) | |
66 | #define SND_AUDIOCODEC_AMRWB ((__u32) 0x00000004) | |
67 | #define SND_AUDIOCODEC_AMRWBPLUS ((__u32) 0x00000005) | |
68 | #define SND_AUDIOCODEC_AAC ((__u32) 0x00000006) | |
69 | #define SND_AUDIOCODEC_WMA ((__u32) 0x00000007) | |
70 | #define SND_AUDIOCODEC_REAL ((__u32) 0x00000008) | |
71 | #define SND_AUDIOCODEC_VORBIS ((__u32) 0x00000009) | |
72 | #define SND_AUDIOCODEC_FLAC ((__u32) 0x0000000A) | |
73 | #define SND_AUDIOCODEC_IEC61937 ((__u32) 0x0000000B) | |
74 | #define SND_AUDIOCODEC_G723_1 ((__u32) 0x0000000C) | |
75 | #define SND_AUDIOCODEC_G729 ((__u32) 0x0000000D) | |
dbb6b943 CK |
76 | #define SND_AUDIOCODEC_BESPOKE ((__u32) 0x0000000E) |
77 | #define SND_AUDIOCODEC_MAX SND_AUDIOCODEC_BESPOKE | |
50c34cfe VK |
78 | |
79 | /* | |
80 | * Profile and modes are listed with bit masks. This allows for a | |
81 | * more compact representation of fields that will not evolve | |
82 | * (in contrast to the list of codecs) | |
83 | */ | |
84 | ||
85 | #define SND_AUDIOPROFILE_PCM ((__u32) 0x00000001) | |
86 | ||
87 | /* MP3 modes are only useful for encoders */ | |
88 | #define SND_AUDIOCHANMODE_MP3_MONO ((__u32) 0x00000001) | |
89 | #define SND_AUDIOCHANMODE_MP3_STEREO ((__u32) 0x00000002) | |
90 | #define SND_AUDIOCHANMODE_MP3_JOINTSTEREO ((__u32) 0x00000004) | |
91 | #define SND_AUDIOCHANMODE_MP3_DUAL ((__u32) 0x00000008) | |
92 | ||
93 | #define SND_AUDIOPROFILE_AMR ((__u32) 0x00000001) | |
94 | ||
95 | /* AMR modes are only useful for encoders */ | |
96 | #define SND_AUDIOMODE_AMR_DTX_OFF ((__u32) 0x00000001) | |
97 | #define SND_AUDIOMODE_AMR_VAD1 ((__u32) 0x00000002) | |
98 | #define SND_AUDIOMODE_AMR_VAD2 ((__u32) 0x00000004) | |
99 | ||
100 | #define SND_AUDIOSTREAMFORMAT_UNDEFINED ((__u32) 0x00000000) | |
101 | #define SND_AUDIOSTREAMFORMAT_CONFORMANCE ((__u32) 0x00000001) | |
102 | #define SND_AUDIOSTREAMFORMAT_IF1 ((__u32) 0x00000002) | |
103 | #define SND_AUDIOSTREAMFORMAT_IF2 ((__u32) 0x00000004) | |
104 | #define SND_AUDIOSTREAMFORMAT_FSF ((__u32) 0x00000008) | |
105 | #define SND_AUDIOSTREAMFORMAT_RTPPAYLOAD ((__u32) 0x00000010) | |
106 | #define SND_AUDIOSTREAMFORMAT_ITU ((__u32) 0x00000020) | |
107 | ||
108 | #define SND_AUDIOPROFILE_AMRWB ((__u32) 0x00000001) | |
109 | ||
110 | /* AMRWB modes are only useful for encoders */ | |
111 | #define SND_AUDIOMODE_AMRWB_DTX_OFF ((__u32) 0x00000001) | |
112 | #define SND_AUDIOMODE_AMRWB_VAD1 ((__u32) 0x00000002) | |
113 | #define SND_AUDIOMODE_AMRWB_VAD2 ((__u32) 0x00000004) | |
114 | ||
115 | #define SND_AUDIOPROFILE_AMRWBPLUS ((__u32) 0x00000001) | |
116 | ||
117 | #define SND_AUDIOPROFILE_AAC ((__u32) 0x00000001) | |
118 | ||
119 | /* AAC modes are required for encoders and decoders */ | |
120 | #define SND_AUDIOMODE_AAC_MAIN ((__u32) 0x00000001) | |
121 | #define SND_AUDIOMODE_AAC_LC ((__u32) 0x00000002) | |
122 | #define SND_AUDIOMODE_AAC_SSR ((__u32) 0x00000004) | |
123 | #define SND_AUDIOMODE_AAC_LTP ((__u32) 0x00000008) | |
124 | #define SND_AUDIOMODE_AAC_HE ((__u32) 0x00000010) | |
125 | #define SND_AUDIOMODE_AAC_SCALABLE ((__u32) 0x00000020) | |
126 | #define SND_AUDIOMODE_AAC_ERLC ((__u32) 0x00000040) | |
127 | #define SND_AUDIOMODE_AAC_LD ((__u32) 0x00000080) | |
128 | #define SND_AUDIOMODE_AAC_HE_PS ((__u32) 0x00000100) | |
129 | #define SND_AUDIOMODE_AAC_HE_MPS ((__u32) 0x00000200) | |
130 | ||
131 | /* AAC formats are required for encoders and decoders */ | |
132 | #define SND_AUDIOSTREAMFORMAT_MP2ADTS ((__u32) 0x00000001) | |
133 | #define SND_AUDIOSTREAMFORMAT_MP4ADTS ((__u32) 0x00000002) | |
134 | #define SND_AUDIOSTREAMFORMAT_MP4LOAS ((__u32) 0x00000004) | |
135 | #define SND_AUDIOSTREAMFORMAT_MP4LATM ((__u32) 0x00000008) | |
136 | #define SND_AUDIOSTREAMFORMAT_ADIF ((__u32) 0x00000010) | |
137 | #define SND_AUDIOSTREAMFORMAT_MP4FF ((__u32) 0x00000020) | |
138 | #define SND_AUDIOSTREAMFORMAT_RAW ((__u32) 0x00000040) | |
139 | ||
140 | #define SND_AUDIOPROFILE_WMA7 ((__u32) 0x00000001) | |
141 | #define SND_AUDIOPROFILE_WMA8 ((__u32) 0x00000002) | |
142 | #define SND_AUDIOPROFILE_WMA9 ((__u32) 0x00000004) | |
143 | #define SND_AUDIOPROFILE_WMA10 ((__u32) 0x00000008) | |
144 | ||
145 | #define SND_AUDIOMODE_WMA_LEVEL1 ((__u32) 0x00000001) | |
146 | #define SND_AUDIOMODE_WMA_LEVEL2 ((__u32) 0x00000002) | |
147 | #define SND_AUDIOMODE_WMA_LEVEL3 ((__u32) 0x00000004) | |
148 | #define SND_AUDIOMODE_WMA_LEVEL4 ((__u32) 0x00000008) | |
149 | #define SND_AUDIOMODE_WMAPRO_LEVELM0 ((__u32) 0x00000010) | |
150 | #define SND_AUDIOMODE_WMAPRO_LEVELM1 ((__u32) 0x00000020) | |
151 | #define SND_AUDIOMODE_WMAPRO_LEVELM2 ((__u32) 0x00000040) | |
152 | #define SND_AUDIOMODE_WMAPRO_LEVELM3 ((__u32) 0x00000080) | |
153 | ||
154 | #define SND_AUDIOSTREAMFORMAT_WMA_ASF ((__u32) 0x00000001) | |
155 | /* | |
156 | * Some implementations strip the ASF header and only send ASF packets | |
157 | * to the DSP | |
158 | */ | |
159 | #define SND_AUDIOSTREAMFORMAT_WMA_NOASF_HDR ((__u32) 0x00000002) | |
160 | ||
161 | #define SND_AUDIOPROFILE_REALAUDIO ((__u32) 0x00000001) | |
162 | ||
163 | #define SND_AUDIOMODE_REALAUDIO_G2 ((__u32) 0x00000001) | |
164 | #define SND_AUDIOMODE_REALAUDIO_8 ((__u32) 0x00000002) | |
165 | #define SND_AUDIOMODE_REALAUDIO_10 ((__u32) 0x00000004) | |
166 | #define SND_AUDIOMODE_REALAUDIO_SURROUND ((__u32) 0x00000008) | |
167 | ||
168 | #define SND_AUDIOPROFILE_VORBIS ((__u32) 0x00000001) | |
169 | ||
170 | #define SND_AUDIOMODE_VORBIS ((__u32) 0x00000001) | |
171 | ||
172 | #define SND_AUDIOPROFILE_FLAC ((__u32) 0x00000001) | |
173 | ||
174 | /* | |
175 | * Define quality levels for FLAC encoders, from LEVEL0 (fast) | |
176 | * to LEVEL8 (best) | |
177 | */ | |
178 | #define SND_AUDIOMODE_FLAC_LEVEL0 ((__u32) 0x00000001) | |
179 | #define SND_AUDIOMODE_FLAC_LEVEL1 ((__u32) 0x00000002) | |
180 | #define SND_AUDIOMODE_FLAC_LEVEL2 ((__u32) 0x00000004) | |
181 | #define SND_AUDIOMODE_FLAC_LEVEL3 ((__u32) 0x00000008) | |
182 | #define SND_AUDIOMODE_FLAC_LEVEL4 ((__u32) 0x00000010) | |
183 | #define SND_AUDIOMODE_FLAC_LEVEL5 ((__u32) 0x00000020) | |
184 | #define SND_AUDIOMODE_FLAC_LEVEL6 ((__u32) 0x00000040) | |
185 | #define SND_AUDIOMODE_FLAC_LEVEL7 ((__u32) 0x00000080) | |
186 | #define SND_AUDIOMODE_FLAC_LEVEL8 ((__u32) 0x00000100) | |
187 | ||
188 | #define SND_AUDIOSTREAMFORMAT_FLAC ((__u32) 0x00000001) | |
189 | #define SND_AUDIOSTREAMFORMAT_FLAC_OGG ((__u32) 0x00000002) | |
190 | ||
191 | /* IEC61937 payloads without CUVP and preambles */ | |
192 | #define SND_AUDIOPROFILE_IEC61937 ((__u32) 0x00000001) | |
193 | /* IEC61937 with S/PDIF preambles+CUVP bits in 32-bit containers */ | |
194 | #define SND_AUDIOPROFILE_IEC61937_SPDIF ((__u32) 0x00000002) | |
195 | ||
196 | /* | |
197 | * IEC modes are mandatory for decoders. Format autodetection | |
198 | * will only happen on the DSP side with mode 0. The PCM mode should | |
199 | * not be used, the PCM codec should be used instead. | |
200 | */ | |
201 | #define SND_AUDIOMODE_IEC_REF_STREAM_HEADER ((__u32) 0x00000000) | |
202 | #define SND_AUDIOMODE_IEC_LPCM ((__u32) 0x00000001) | |
203 | #define SND_AUDIOMODE_IEC_AC3 ((__u32) 0x00000002) | |
204 | #define SND_AUDIOMODE_IEC_MPEG1 ((__u32) 0x00000004) | |
205 | #define SND_AUDIOMODE_IEC_MP3 ((__u32) 0x00000008) | |
206 | #define SND_AUDIOMODE_IEC_MPEG2 ((__u32) 0x00000010) | |
207 | #define SND_AUDIOMODE_IEC_AACLC ((__u32) 0x00000020) | |
208 | #define SND_AUDIOMODE_IEC_DTS ((__u32) 0x00000040) | |
209 | #define SND_AUDIOMODE_IEC_ATRAC ((__u32) 0x00000080) | |
210 | #define SND_AUDIOMODE_IEC_SACD ((__u32) 0x00000100) | |
211 | #define SND_AUDIOMODE_IEC_EAC3 ((__u32) 0x00000200) | |
212 | #define SND_AUDIOMODE_IEC_DTS_HD ((__u32) 0x00000400) | |
213 | #define SND_AUDIOMODE_IEC_MLP ((__u32) 0x00000800) | |
214 | #define SND_AUDIOMODE_IEC_DST ((__u32) 0x00001000) | |
215 | #define SND_AUDIOMODE_IEC_WMAPRO ((__u32) 0x00002000) | |
216 | #define SND_AUDIOMODE_IEC_REF_CXT ((__u32) 0x00004000) | |
217 | #define SND_AUDIOMODE_IEC_HE_AAC ((__u32) 0x00008000) | |
218 | #define SND_AUDIOMODE_IEC_HE_AAC2 ((__u32) 0x00010000) | |
219 | #define SND_AUDIOMODE_IEC_MPEG_SURROUND ((__u32) 0x00020000) | |
220 | ||
221 | #define SND_AUDIOPROFILE_G723_1 ((__u32) 0x00000001) | |
222 | ||
223 | #define SND_AUDIOMODE_G723_1_ANNEX_A ((__u32) 0x00000001) | |
224 | #define SND_AUDIOMODE_G723_1_ANNEX_B ((__u32) 0x00000002) | |
225 | #define SND_AUDIOMODE_G723_1_ANNEX_C ((__u32) 0x00000004) | |
226 | ||
227 | #define SND_AUDIOPROFILE_G729 ((__u32) 0x00000001) | |
228 | ||
229 | #define SND_AUDIOMODE_G729_ANNEX_A ((__u32) 0x00000001) | |
230 | #define SND_AUDIOMODE_G729_ANNEX_B ((__u32) 0x00000002) | |
231 | ||
232 | /* <FIXME: multichannel encoders aren't supported for now. Would need | |
233 | an additional definition of channel arrangement> */ | |
234 | ||
235 | /* VBR/CBR definitions */ | |
236 | #define SND_RATECONTROLMODE_CONSTANTBITRATE ((__u32) 0x00000001) | |
237 | #define SND_RATECONTROLMODE_VARIABLEBITRATE ((__u32) 0x00000002) | |
238 | ||
239 | /* Encoder options */ | |
240 | ||
241 | struct snd_enc_wma { | |
242 | __u32 super_block_align; /* WMA Type-specific data */ | |
243 | }; | |
244 | ||
245 | ||
246 | /** | |
247 | * struct snd_enc_vorbis | |
248 | * @quality: Sets encoding quality to n, between -1 (low) and 10 (high). | |
249 | * In the default mode of operation, the quality level is 3. | |
250 | * Normal quality range is 0 - 10. | |
251 | * @managed: Boolean. Set bitrate management mode. This turns off the | |
252 | * normal VBR encoding, but allows hard or soft bitrate constraints to be | |
253 | * enforced by the encoder. This mode can be slower, and may also be | |
254 | * lower quality. It is primarily useful for streaming. | |
255 | * @max_bit_rate: Enabled only if managed is TRUE | |
256 | * @min_bit_rate: Enabled only if managed is TRUE | |
257 | * @downmix: Boolean. Downmix input from stereo to mono (has no effect on | |
258 | * non-stereo streams). Useful for lower-bitrate encoding. | |
259 | * | |
260 | * These options were extracted from the OpenMAX IL spec and Gstreamer vorbisenc | |
261 | * properties | |
262 | * | |
263 | * For best quality users should specify VBR mode and set quality levels. | |
264 | */ | |
265 | ||
266 | struct snd_enc_vorbis { | |
267 | __s32 quality; | |
268 | __u32 managed; | |
269 | __u32 max_bit_rate; | |
270 | __u32 min_bit_rate; | |
271 | __u32 downmix; | |
2da38e0c | 272 | } __attribute__((packed, aligned(4))); |
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273 | |
274 | ||
275 | /** | |
276 | * struct snd_enc_real | |
277 | * @quant_bits: number of coupling quantization bits in the stream | |
278 | * @start_region: coupling start region in the stream | |
279 | * @num_regions: number of regions value | |
280 | * | |
281 | * These options were extracted from the OpenMAX IL spec | |
282 | */ | |
283 | ||
284 | struct snd_enc_real { | |
285 | __u32 quant_bits; | |
286 | __u32 start_region; | |
287 | __u32 num_regions; | |
2da38e0c | 288 | } __attribute__((packed, aligned(4))); |
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289 | |
290 | /** | |
291 | * struct snd_enc_flac | |
292 | * @num: serial number, valid only for OGG formats | |
293 | * needs to be set by application | |
294 | * @gain: Add replay gain tags | |
295 | * | |
296 | * These options were extracted from the FLAC online documentation | |
297 | * at http://flac.sourceforge.net/documentation_tools_flac.html | |
298 | * | |
299 | * To make the API simpler, it is assumed that the user will select quality | |
300 | * profiles. Additional options that affect encoding quality and speed can | |
301 | * be added at a later stage if needed. | |
302 | * | |
303 | * By default the Subset format is used by encoders. | |
304 | * | |
305 | * TAGS such as pictures, etc, cannot be handled by an offloaded encoder and are | |
306 | * not supported in this API. | |
307 | */ | |
308 | ||
309 | struct snd_enc_flac { | |
310 | __u32 num; | |
311 | __u32 gain; | |
2da38e0c | 312 | } __attribute__((packed, aligned(4))); |
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313 | |
314 | struct snd_enc_generic { | |
315 | __u32 bw; /* encoder bandwidth */ | |
dbb6b943 | 316 | __s32 reserved[15]; /* Can be used for SND_AUDIOCODEC_BESPOKE */ |
2da38e0c | 317 | } __attribute__((packed, aligned(4))); |
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318 | |
319 | union snd_codec_options { | |
320 | struct snd_enc_wma wma; | |
321 | struct snd_enc_vorbis vorbis; | |
322 | struct snd_enc_real real; | |
323 | struct snd_enc_flac flac; | |
324 | struct snd_enc_generic generic; | |
2da38e0c | 325 | } __attribute__((packed, aligned(4))); |
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326 | |
327 | /** struct snd_codec_desc - description of codec capabilities | |
328 | * @max_ch: Maximum number of audio channels | |
f0e9c080 | 329 | * @sample_rates: Sampling rates in Hz, use values like 48000 for this |
929559be | 330 | * @num_sample_rates: Number of valid values in sample_rates array |
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331 | * @bit_rate: Indexed array containing supported bit rates |
332 | * @num_bitrates: Number of valid values in bit_rate array | |
333 | * @rate_control: value is specified by SND_RATECONTROLMODE defines. | |
334 | * @profiles: Supported profiles. See SND_AUDIOPROFILE defines. | |
335 | * @modes: Supported modes. See SND_AUDIOMODE defines | |
336 | * @formats: Supported formats. See SND_AUDIOSTREAMFORMAT defines | |
337 | * @min_buffer: Minimum buffer size handled by codec implementation | |
338 | * @reserved: reserved for future use | |
339 | * | |
340 | * This structure provides a scalar value for profiles, modes and stream | |
341 | * format fields. | |
342 | * If an implementation supports multiple combinations, they will be listed as | |
343 | * codecs with different descriptors, for example there would be 2 descriptors | |
344 | * for AAC-RAW and AAC-ADTS. | |
345 | * This entails some redundancy but makes it easier to avoid invalid | |
346 | * configurations. | |
347 | * | |
348 | */ | |
349 | ||
350 | struct snd_codec_desc { | |
351 | __u32 max_ch; | |
b8bab048 | 352 | __u32 sample_rates[MAX_NUM_SAMPLE_RATES]; |
929559be | 353 | __u32 num_sample_rates; |
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354 | __u32 bit_rate[MAX_NUM_BITRATES]; |
355 | __u32 num_bitrates; | |
356 | __u32 rate_control; | |
357 | __u32 profiles; | |
358 | __u32 modes; | |
359 | __u32 formats; | |
360 | __u32 min_buffer; | |
361 | __u32 reserved[15]; | |
2da38e0c | 362 | } __attribute__((packed, aligned(4))); |
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363 | |
364 | /** struct snd_codec | |
365 | * @id: Identifies the supported audio encoder/decoder. | |
366 | * See SND_AUDIOCODEC macros. | |
367 | * @ch_in: Number of input audio channels | |
368 | * @ch_out: Number of output channels. In case of contradiction between | |
369 | * this field and the channelMode field, the channelMode field | |
370 | * overrides. | |
d9afee69 VK |
371 | * @sample_rate: Audio sample rate of input data in Hz, use values like 48000 |
372 | * for this. | |
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373 | * @bit_rate: Bitrate of encoded data. May be ignored by decoders |
374 | * @rate_control: Encoding rate control. See SND_RATECONTROLMODE defines. | |
375 | * Encoders may rely on profiles for quality levels. | |
376 | * May be ignored by decoders. | |
377 | * @profile: Mandatory for encoders, can be mandatory for specific | |
378 | * decoders as well. See SND_AUDIOPROFILE defines. | |
379 | * @level: Supported level (Only used by WMA at the moment) | |
380 | * @ch_mode: Channel mode for encoder. See SND_AUDIOCHANMODE defines | |
381 | * @format: Format of encoded bistream. Mandatory when defined. | |
382 | * See SND_AUDIOSTREAMFORMAT defines. | |
383 | * @align: Block alignment in bytes of an audio sample. | |
384 | * Only required for PCM or IEC formats. | |
385 | * @options: encoder-specific settings | |
386 | * @reserved: reserved for future use | |
387 | */ | |
388 | ||
389 | struct snd_codec { | |
390 | __u32 id; | |
391 | __u32 ch_in; | |
392 | __u32 ch_out; | |
393 | __u32 sample_rate; | |
394 | __u32 bit_rate; | |
395 | __u32 rate_control; | |
396 | __u32 profile; | |
397 | __u32 level; | |
398 | __u32 ch_mode; | |
399 | __u32 format; | |
400 | __u32 align; | |
401 | union snd_codec_options options; | |
402 | __u32 reserved[3]; | |
2da38e0c | 403 | } __attribute__((packed, aligned(4))); |
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404 | |
405 | #endif |