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 /* AUDIO CODECS SUPPORTED */
58 #define MAX_NUM_CODECS 32
59 #define MAX_NUM_CODEC_DESCRIPTORS 32
60 #define MAX_NUM_BITRATES 32
61 #define MAX_NUM_SAMPLE_RATES 32
62 
63 /* Codecs are listed linearly to allow for extensibility */
64 #define SND_AUDIOCODEC_PCM                   ((__u32) 0x00000001)
65 #define SND_AUDIOCODEC_MP3                   ((__u32) 0x00000002)
66 #define SND_AUDIOCODEC_AMR                   ((__u32) 0x00000003)
67 #define SND_AUDIOCODEC_AMRWB                 ((__u32) 0x00000004)
68 #define SND_AUDIOCODEC_AMRWBPLUS             ((__u32) 0x00000005)
69 #define SND_AUDIOCODEC_AAC                   ((__u32) 0x00000006)
70 #define SND_AUDIOCODEC_WMA                   ((__u32) 0x00000007)
71 #define SND_AUDIOCODEC_REAL                  ((__u32) 0x00000008)
72 #define SND_AUDIOCODEC_VORBIS                ((__u32) 0x00000009)
73 #define SND_AUDIOCODEC_FLAC                  ((__u32) 0x0000000A)
74 #define SND_AUDIOCODEC_IEC61937              ((__u32) 0x0000000B)
75 #define SND_AUDIOCODEC_G723_1                ((__u32) 0x0000000C)
76 #define SND_AUDIOCODEC_G729                  ((__u32) 0x0000000D)
77 #define SND_AUDIOCODEC_BESPOKE               ((__u32) 0x0000000E)
78 #define SND_AUDIOCODEC_ALAC                  ((__u32) 0x0000000F)
79 #define SND_AUDIOCODEC_APE                   ((__u32) 0x00000010)
80 #define SND_AUDIOCODEC_MAX                   SND_AUDIOCODEC_APE
81 
82 /*
83  * Profile and modes are listed with bit masks. This allows for a
84  * more compact representation of fields that will not evolve
85  * (in contrast to the list of codecs)
86  */
87 
88 #define SND_AUDIOPROFILE_PCM                 ((__u32) 0x00000001)
89 
90 /* MP3 modes are only useful for encoders */
91 #define SND_AUDIOCHANMODE_MP3_MONO           ((__u32) 0x00000001)
92 #define SND_AUDIOCHANMODE_MP3_STEREO         ((__u32) 0x00000002)
93 #define SND_AUDIOCHANMODE_MP3_JOINTSTEREO    ((__u32) 0x00000004)
94 #define SND_AUDIOCHANMODE_MP3_DUAL           ((__u32) 0x00000008)
95 
96 #define SND_AUDIOPROFILE_AMR                 ((__u32) 0x00000001)
97 
98 /* AMR modes are only useful for encoders */
99 #define SND_AUDIOMODE_AMR_DTX_OFF            ((__u32) 0x00000001)
100 #define SND_AUDIOMODE_AMR_VAD1               ((__u32) 0x00000002)
101 #define SND_AUDIOMODE_AMR_VAD2               ((__u32) 0x00000004)
102 
103 #define SND_AUDIOSTREAMFORMAT_UNDEFINED	     ((__u32) 0x00000000)
104 #define SND_AUDIOSTREAMFORMAT_CONFORMANCE    ((__u32) 0x00000001)
105 #define SND_AUDIOSTREAMFORMAT_IF1            ((__u32) 0x00000002)
106 #define SND_AUDIOSTREAMFORMAT_IF2            ((__u32) 0x00000004)
107 #define SND_AUDIOSTREAMFORMAT_FSF            ((__u32) 0x00000008)
108 #define SND_AUDIOSTREAMFORMAT_RTPPAYLOAD     ((__u32) 0x00000010)
109 #define SND_AUDIOSTREAMFORMAT_ITU            ((__u32) 0x00000020)
110 
111 #define SND_AUDIOPROFILE_AMRWB               ((__u32) 0x00000001)
112 
113 /* AMRWB modes are only useful for encoders */
114 #define SND_AUDIOMODE_AMRWB_DTX_OFF          ((__u32) 0x00000001)
115 #define SND_AUDIOMODE_AMRWB_VAD1             ((__u32) 0x00000002)
116 #define SND_AUDIOMODE_AMRWB_VAD2             ((__u32) 0x00000004)
117 
118 #define SND_AUDIOPROFILE_AMRWBPLUS           ((__u32) 0x00000001)
119 
120 #define SND_AUDIOPROFILE_AAC                 ((__u32) 0x00000001)
121 
122 /* AAC modes are required for encoders and decoders */
123 #define SND_AUDIOMODE_AAC_MAIN               ((__u32) 0x00000001)
124 #define SND_AUDIOMODE_AAC_LC                 ((__u32) 0x00000002)
125 #define SND_AUDIOMODE_AAC_SSR                ((__u32) 0x00000004)
126 #define SND_AUDIOMODE_AAC_LTP                ((__u32) 0x00000008)
127 #define SND_AUDIOMODE_AAC_HE                 ((__u32) 0x00000010)
128 #define SND_AUDIOMODE_AAC_SCALABLE           ((__u32) 0x00000020)
129 #define SND_AUDIOMODE_AAC_ERLC               ((__u32) 0x00000040)
130 #define SND_AUDIOMODE_AAC_LD                 ((__u32) 0x00000080)
131 #define SND_AUDIOMODE_AAC_HE_PS              ((__u32) 0x00000100)
132 #define SND_AUDIOMODE_AAC_HE_MPS             ((__u32) 0x00000200)
133 
134 /* AAC formats are required for encoders and decoders */
135 #define SND_AUDIOSTREAMFORMAT_MP2ADTS        ((__u32) 0x00000001)
136 #define SND_AUDIOSTREAMFORMAT_MP4ADTS        ((__u32) 0x00000002)
137 #define SND_AUDIOSTREAMFORMAT_MP4LOAS        ((__u32) 0x00000004)
138 #define SND_AUDIOSTREAMFORMAT_MP4LATM        ((__u32) 0x00000008)
139 #define SND_AUDIOSTREAMFORMAT_ADIF           ((__u32) 0x00000010)
140 #define SND_AUDIOSTREAMFORMAT_MP4FF          ((__u32) 0x00000020)
141 #define SND_AUDIOSTREAMFORMAT_RAW            ((__u32) 0x00000040)
142 
143 #define SND_AUDIOPROFILE_WMA7                ((__u32) 0x00000001)
144 #define SND_AUDIOPROFILE_WMA8                ((__u32) 0x00000002)
145 #define SND_AUDIOPROFILE_WMA9                ((__u32) 0x00000004)
146 #define SND_AUDIOPROFILE_WMA10               ((__u32) 0x00000008)
147 #define SND_AUDIOPROFILE_WMA9_PRO            ((__u32) 0x00000010)
148 #define SND_AUDIOPROFILE_WMA9_LOSSLESS       ((__u32) 0x00000020)
149 #define SND_AUDIOPROFILE_WMA10_LOSSLESS      ((__u32) 0x00000040)
150 
151 #define SND_AUDIOMODE_WMA_LEVEL1             ((__u32) 0x00000001)
152 #define SND_AUDIOMODE_WMA_LEVEL2             ((__u32) 0x00000002)
153 #define SND_AUDIOMODE_WMA_LEVEL3             ((__u32) 0x00000004)
154 #define SND_AUDIOMODE_WMA_LEVEL4             ((__u32) 0x00000008)
155 #define SND_AUDIOMODE_WMAPRO_LEVELM0         ((__u32) 0x00000010)
156 #define SND_AUDIOMODE_WMAPRO_LEVELM1         ((__u32) 0x00000020)
157 #define SND_AUDIOMODE_WMAPRO_LEVELM2         ((__u32) 0x00000040)
158 #define SND_AUDIOMODE_WMAPRO_LEVELM3         ((__u32) 0x00000080)
159 
160 #define SND_AUDIOSTREAMFORMAT_WMA_ASF        ((__u32) 0x00000001)
161 /*
162  * Some implementations strip the ASF header and only send ASF packets
163  * to the DSP
164  */
165 #define SND_AUDIOSTREAMFORMAT_WMA_NOASF_HDR  ((__u32) 0x00000002)
166 
167 #define SND_AUDIOPROFILE_REALAUDIO           ((__u32) 0x00000001)
168 
169 #define SND_AUDIOMODE_REALAUDIO_G2           ((__u32) 0x00000001)
170 #define SND_AUDIOMODE_REALAUDIO_8            ((__u32) 0x00000002)
171 #define SND_AUDIOMODE_REALAUDIO_10           ((__u32) 0x00000004)
172 #define SND_AUDIOMODE_REALAUDIO_SURROUND     ((__u32) 0x00000008)
173 
174 #define SND_AUDIOPROFILE_VORBIS              ((__u32) 0x00000001)
175 
176 #define SND_AUDIOMODE_VORBIS                 ((__u32) 0x00000001)
177 
178 #define SND_AUDIOPROFILE_FLAC                ((__u32) 0x00000001)
179 
180 /*
181  * Define quality levels for FLAC encoders, from LEVEL0 (fast)
182  * to LEVEL8 (best)
183  */
184 #define SND_AUDIOMODE_FLAC_LEVEL0            ((__u32) 0x00000001)
185 #define SND_AUDIOMODE_FLAC_LEVEL1            ((__u32) 0x00000002)
186 #define SND_AUDIOMODE_FLAC_LEVEL2            ((__u32) 0x00000004)
187 #define SND_AUDIOMODE_FLAC_LEVEL3            ((__u32) 0x00000008)
188 #define SND_AUDIOMODE_FLAC_LEVEL4            ((__u32) 0x00000010)
189 #define SND_AUDIOMODE_FLAC_LEVEL5            ((__u32) 0x00000020)
190 #define SND_AUDIOMODE_FLAC_LEVEL6            ((__u32) 0x00000040)
191 #define SND_AUDIOMODE_FLAC_LEVEL7            ((__u32) 0x00000080)
192 #define SND_AUDIOMODE_FLAC_LEVEL8            ((__u32) 0x00000100)
193 
194 #define SND_AUDIOSTREAMFORMAT_FLAC           ((__u32) 0x00000001)
195 #define SND_AUDIOSTREAMFORMAT_FLAC_OGG       ((__u32) 0x00000002)
196 
197 /* IEC61937 payloads without CUVP and preambles */
198 #define SND_AUDIOPROFILE_IEC61937            ((__u32) 0x00000001)
199 /* IEC61937 with S/PDIF preambles+CUVP bits in 32-bit containers */
200 #define SND_AUDIOPROFILE_IEC61937_SPDIF      ((__u32) 0x00000002)
201 
202 /*
203  * IEC modes are mandatory for decoders. Format autodetection
204  * will only happen on the DSP side with mode 0. The PCM mode should
205  * not be used, the PCM codec should be used instead.
206  */
207 #define SND_AUDIOMODE_IEC_REF_STREAM_HEADER  ((__u32) 0x00000000)
208 #define SND_AUDIOMODE_IEC_LPCM		     ((__u32) 0x00000001)
209 #define SND_AUDIOMODE_IEC_AC3		     ((__u32) 0x00000002)
210 #define SND_AUDIOMODE_IEC_MPEG1		     ((__u32) 0x00000004)
211 #define SND_AUDIOMODE_IEC_MP3		     ((__u32) 0x00000008)
212 #define SND_AUDIOMODE_IEC_MPEG2		     ((__u32) 0x00000010)
213 #define SND_AUDIOMODE_IEC_AACLC		     ((__u32) 0x00000020)
214 #define SND_AUDIOMODE_IEC_DTS		     ((__u32) 0x00000040)
215 #define SND_AUDIOMODE_IEC_ATRAC		     ((__u32) 0x00000080)
216 #define SND_AUDIOMODE_IEC_SACD		     ((__u32) 0x00000100)
217 #define SND_AUDIOMODE_IEC_EAC3		     ((__u32) 0x00000200)
218 #define SND_AUDIOMODE_IEC_DTS_HD	     ((__u32) 0x00000400)
219 #define SND_AUDIOMODE_IEC_MLP		     ((__u32) 0x00000800)
220 #define SND_AUDIOMODE_IEC_DST		     ((__u32) 0x00001000)
221 #define SND_AUDIOMODE_IEC_WMAPRO	     ((__u32) 0x00002000)
222 #define SND_AUDIOMODE_IEC_REF_CXT            ((__u32) 0x00004000)
223 #define SND_AUDIOMODE_IEC_HE_AAC	     ((__u32) 0x00008000)
224 #define SND_AUDIOMODE_IEC_HE_AAC2	     ((__u32) 0x00010000)
225 #define SND_AUDIOMODE_IEC_MPEG_SURROUND	     ((__u32) 0x00020000)
226 
227 #define SND_AUDIOPROFILE_G723_1              ((__u32) 0x00000001)
228 
229 #define SND_AUDIOMODE_G723_1_ANNEX_A         ((__u32) 0x00000001)
230 #define SND_AUDIOMODE_G723_1_ANNEX_B         ((__u32) 0x00000002)
231 #define SND_AUDIOMODE_G723_1_ANNEX_C         ((__u32) 0x00000004)
232 
233 #define SND_AUDIOPROFILE_G729                ((__u32) 0x00000001)
234 
235 #define SND_AUDIOMODE_G729_ANNEX_A           ((__u32) 0x00000001)
236 #define SND_AUDIOMODE_G729_ANNEX_B           ((__u32) 0x00000002)
237 
238 /* <FIXME: multichannel encoders aren't supported for now. Would need
239    an additional definition of channel arrangement> */
240 
241 /* VBR/CBR definitions */
242 #define SND_RATECONTROLMODE_CONSTANTBITRATE  ((__u32) 0x00000001)
243 #define SND_RATECONTROLMODE_VARIABLEBITRATE  ((__u32) 0x00000002)
244 
245 /* Encoder options */
246 
247 struct snd_enc_wma {
248 	__u32 super_block_align; /* WMA Type-specific data */
249 };
250 
251 
252 /**
253  * struct snd_enc_vorbis - Vorbis encoder parameters
254  * @quality: Sets encoding quality to n, between -1 (low) and 10 (high).
255  * In the default mode of operation, the quality level is 3.
256  * Normal quality range is 0 - 10.
257  * @managed: Boolean. Set  bitrate  management  mode. This turns off the
258  * normal VBR encoding, but allows hard or soft bitrate constraints to be
259  * enforced by the encoder. This mode can be slower, and may also be
260  * lower quality. It is primarily useful for streaming.
261  * @max_bit_rate: Enabled only if managed is TRUE
262  * @min_bit_rate: Enabled only if managed is TRUE
263  * @downmix: Boolean. Downmix input from stereo to mono (has no effect on
264  * non-stereo streams). Useful for lower-bitrate encoding.
265  *
266  * These options were extracted from the OpenMAX IL spec and Gstreamer vorbisenc
267  * properties
268  *
269  * For best quality users should specify VBR mode and set quality levels.
270  */
271 
272 struct snd_enc_vorbis {
273 	__s32 quality;
274 	__u32 managed;
275 	__u32 max_bit_rate;
276 	__u32 min_bit_rate;
277 	__u32 downmix;
278 } __attribute__((packed, aligned(4)));
279 
280 
281 /**
282  * struct snd_enc_real - RealAudio encoder parameters
283  * @quant_bits: number of coupling quantization bits in the stream
284  * @start_region: coupling start region in the stream
285  * @num_regions: number of regions value
286  *
287  * These options were extracted from the OpenMAX IL spec
288  */
289 
290 struct snd_enc_real {
291 	__u32 quant_bits;
292 	__u32 start_region;
293 	__u32 num_regions;
294 } __attribute__((packed, aligned(4)));
295 
296 /**
297  * struct snd_enc_flac - FLAC encoder parameters
298  * @num: serial number, valid only for OGG formats
299  *	needs to be set by application
300  * @gain: Add replay gain tags
301  *
302  * These options were extracted from the FLAC online documentation
303  * at http://flac.sourceforge.net/documentation_tools_flac.html
304  *
305  * To make the API simpler, it is assumed that the user will select quality
306  * profiles. Additional options that affect encoding quality and speed can
307  * be added at a later stage if needed.
308  *
309  * By default the Subset format is used by encoders.
310  *
311  * TAGS such as pictures, etc, cannot be handled by an offloaded encoder and are
312  * not supported in this API.
313  */
314 
315 struct snd_enc_flac {
316 	__u32 num;
317 	__u32 gain;
318 } __attribute__((packed, aligned(4)));
319 
320 struct snd_enc_generic {
321 	__u32 bw;	/* encoder bandwidth */
322 	__s32 reserved[15];	/* Can be used for SND_AUDIOCODEC_BESPOKE */
323 } __attribute__((packed, aligned(4)));
324 
325 struct snd_dec_flac {
326 	__u16 sample_size;
327 	__u16 min_blk_size;
328 	__u16 max_blk_size;
329 	__u16 min_frame_size;
330 	__u16 max_frame_size;
331 	__u16 reserved;
332 } __attribute__((packed, aligned(4)));
333 
334 struct snd_dec_wma {
335 	__u32 encoder_option;
336 	__u32 adv_encoder_option;
337 	__u32 adv_encoder_option2;
338 	__u32 reserved;
339 } __attribute__((packed, aligned(4)));
340 
341 struct snd_dec_alac {
342 	__u32 frame_length;
343 	__u8 compatible_version;
344 	__u8 pb;
345 	__u8 mb;
346 	__u8 kb;
347 	__u32 max_run;
348 	__u32 max_frame_bytes;
349 } __attribute__((packed, aligned(4)));
350 
351 struct snd_dec_ape {
352 	__u16 compatible_version;
353 	__u16 compression_level;
354 	__u32 format_flags;
355 	__u32 blocks_per_frame;
356 	__u32 final_frame_blocks;
357 	__u32 total_frames;
358 	__u32 seek_table_present;
359 } __attribute__((packed, aligned(4)));
360 
361 union snd_codec_options {
362 	struct snd_enc_wma wma;
363 	struct snd_enc_vorbis vorbis;
364 	struct snd_enc_real real;
365 	struct snd_enc_flac flac;
366 	struct snd_enc_generic generic;
367 	struct snd_dec_flac flac_d;
368 	struct snd_dec_wma wma_d;
369 	struct snd_dec_alac alac_d;
370 	struct snd_dec_ape ape_d;
371 } __attribute__((packed, aligned(4)));
372 
373 /** struct snd_codec_desc - description of codec capabilities
374  * @max_ch: Maximum number of audio channels
375  * @sample_rates: Sampling rates in Hz, use values like 48000 for this
376  * @num_sample_rates: Number of valid values in sample_rates array
377  * @bit_rate: Indexed array containing supported bit rates
378  * @num_bitrates: Number of valid values in bit_rate array
379  * @rate_control: value is specified by SND_RATECONTROLMODE defines.
380  * @profiles: Supported profiles. See SND_AUDIOPROFILE defines.
381  * @modes: Supported modes. See SND_AUDIOMODE defines
382  * @formats: Supported formats. See SND_AUDIOSTREAMFORMAT defines
383  * @min_buffer: Minimum buffer size handled by codec implementation
384  * @reserved: reserved for future use
385  *
386  * This structure provides a scalar value for profiles, modes and stream
387  * format fields.
388  * If an implementation supports multiple combinations, they will be listed as
389  * codecs with different descriptors, for example there would be 2 descriptors
390  * for AAC-RAW and AAC-ADTS.
391  * This entails some redundancy but makes it easier to avoid invalid
392  * configurations.
393  *
394  */
395 
396 struct snd_codec_desc {
397 	__u32 max_ch;
398 	__u32 sample_rates[MAX_NUM_SAMPLE_RATES];
399 	__u32 num_sample_rates;
400 	__u32 bit_rate[MAX_NUM_BITRATES];
401 	__u32 num_bitrates;
402 	__u32 rate_control;
403 	__u32 profiles;
404 	__u32 modes;
405 	__u32 formats;
406 	__u32 min_buffer;
407 	__u32 reserved[15];
408 } __attribute__((packed, aligned(4)));
409 
410 /** struct snd_codec
411  * @id: Identifies the supported audio encoder/decoder.
412  *		See SND_AUDIOCODEC macros.
413  * @ch_in: Number of input audio channels
414  * @ch_out: Number of output channels. In case of contradiction between
415  *		this field and the channelMode field, the channelMode field
416  *		overrides.
417  * @sample_rate: Audio sample rate of input data in Hz, use values like 48000
418  *		for this.
419  * @bit_rate: Bitrate of encoded data. May be ignored by decoders
420  * @rate_control: Encoding rate control. See SND_RATECONTROLMODE defines.
421  *               Encoders may rely on profiles for quality levels.
422  *		 May be ignored by decoders.
423  * @profile: Mandatory for encoders, can be mandatory for specific
424  *		decoders as well. See SND_AUDIOPROFILE defines.
425  * @level: Supported level (Only used by WMA at the moment)
426  * @ch_mode: Channel mode for encoder. See SND_AUDIOCHANMODE defines
427  * @format: Format of encoded bistream. Mandatory when defined.
428  *		See SND_AUDIOSTREAMFORMAT defines.
429  * @align: Block alignment in bytes of an audio sample.
430  *		Only required for PCM or IEC formats.
431  * @options: encoder-specific settings
432  * @reserved: reserved for future use
433  */
434 
435 struct snd_codec {
436 	__u32 id;
437 	__u32 ch_in;
438 	__u32 ch_out;
439 	__u32 sample_rate;
440 	__u32 bit_rate;
441 	__u32 rate_control;
442 	__u32 profile;
443 	__u32 level;
444 	__u32 ch_mode;
445 	__u32 format;
446 	__u32 align;
447 	union snd_codec_options options;
448 	__u32 reserved[3];
449 } __attribute__((packed, aligned(4)));
450 
451 #endif
452