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asound.h
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1 /*
2  * Advanced Linux Sound Architecture - ALSA - Driver
3  * Copyright (c) 1994-2003 by Jaroslav Kysela <[email protected]>,
4  * Abramo Bagnara <[email protected]>
5  *
6  *
7  * This program is free software; you can redistribute it and/or modify
8  * it under the terms of the GNU General Public License as published by
9  * the Free Software Foundation; either version 2 of the License, or
10  * (at your option) any later version.
11  *
12  * This program is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15  * GNU General Public License for more details.
16  *
17  * You should have received a copy of the GNU General Public License
18  * along with this program; if not, write to the Free Software
19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20  *
21  */
22 
23 #ifndef __SOUND_ASOUND_H
24 #define __SOUND_ASOUND_H
25 
26 #include <linux/types.h>
27 
28 #ifdef __KERNEL__
29 #include <linux/ioctl.h>
30 #include <linux/time.h>
31 #include <asm/byteorder.h>
32 
33 #ifdef __LITTLE_ENDIAN
34 #define SNDRV_LITTLE_ENDIAN
35 #else
36 #ifdef __BIG_ENDIAN
37 #define SNDRV_BIG_ENDIAN
38 #else
39 #error "Unsupported endian..."
40 #endif
41 #endif
42 
43 #endif /* __KERNEL__ **/
44 
45 /*
46  * protocol version
47  */
48 
49 #define SNDRV_PROTOCOL_VERSION(major, minor, subminor) (((major)<<16)|((minor)<<8)|(subminor))
50 #define SNDRV_PROTOCOL_MAJOR(version) (((version)>>16)&0xffff)
51 #define SNDRV_PROTOCOL_MINOR(version) (((version)>>8)&0xff)
52 #define SNDRV_PROTOCOL_MICRO(version) ((version)&0xff)
53 #define SNDRV_PROTOCOL_INCOMPATIBLE(kversion, uversion) \
54  (SNDRV_PROTOCOL_MAJOR(kversion) != SNDRV_PROTOCOL_MAJOR(uversion) || \
55  (SNDRV_PROTOCOL_MAJOR(kversion) == SNDRV_PROTOCOL_MAJOR(uversion) && \
56  SNDRV_PROTOCOL_MINOR(kversion) != SNDRV_PROTOCOL_MINOR(uversion)))
57 
58 /****************************************************************************
59  * *
60  * Digital audio interface *
61  * *
62  ****************************************************************************/
63 
64 struct snd_aes_iec958 {
65  unsigned char status[24]; /* AES/IEC958 channel status bits */
66  unsigned char subcode[147]; /* AES/IEC958 subcode bits */
67  unsigned char pad; /* nothing */
68  unsigned char dig_subframe[4]; /* AES/IEC958 subframe bits */
69 };
70 
71 /****************************************************************************
72  * *
73  * CEA-861 Audio InfoFrame. Used in HDMI and DisplayPort *
74  * *
75  ****************************************************************************/
76 
77 struct snd_cea_861_aud_if {
78  unsigned char db1_ct_cc; /* coding type and channel count */
79  unsigned char db2_sf_ss; /* sample frequency and size */
80  unsigned char db3; /* not used, all zeros */
81  unsigned char db4_ca; /* channel allocation code */
82  unsigned char db5_dminh_lsv; /* downmix inhibit & level-shit values */
83 };
84 
85 /****************************************************************************
86  * *
87  * Section for driver hardware dependent interface - /dev/snd/hw? *
88  * *
89  ****************************************************************************/
90 
91 #define SNDRV_HWDEP_VERSION SNDRV_PROTOCOL_VERSION(1, 0, 1)
92 
93 enum {
94  SNDRV_HWDEP_IFACE_OPL2 = 0,
95  SNDRV_HWDEP_IFACE_OPL3,
96  SNDRV_HWDEP_IFACE_OPL4,
97  SNDRV_HWDEP_IFACE_SB16CSP, /* Creative Signal Processor */
98  SNDRV_HWDEP_IFACE_EMU10K1, /* FX8010 processor in EMU10K1 chip */
99  SNDRV_HWDEP_IFACE_YSS225, /* Yamaha FX processor */
100  SNDRV_HWDEP_IFACE_ICS2115, /* Wavetable synth */
101  SNDRV_HWDEP_IFACE_SSCAPE, /* Ensoniq SoundScape ISA card (MC68EC000) */
102  SNDRV_HWDEP_IFACE_VX, /* Digigram VX cards */
103  SNDRV_HWDEP_IFACE_MIXART, /* Digigram miXart cards */
104  SNDRV_HWDEP_IFACE_USX2Y, /* Tascam US122, US224 & US428 usb */
105  SNDRV_HWDEP_IFACE_EMUX_WAVETABLE, /* EmuX wavetable */
106  SNDRV_HWDEP_IFACE_BLUETOOTH, /* Bluetooth audio */
107  SNDRV_HWDEP_IFACE_USX2Y_PCM, /* Tascam US122, US224 & US428 rawusb pcm */
108  SNDRV_HWDEP_IFACE_PCXHR, /* Digigram PCXHR */
109  SNDRV_HWDEP_IFACE_SB_RC, /* SB Extigy/Audigy2NX remote control */
110  SNDRV_HWDEP_IFACE_HDA, /* HD-audio */
111  SNDRV_HWDEP_IFACE_USB_STREAM, /* direct access to usb stream */
112 
113  /* Don't forget to change the following: */
114  SNDRV_HWDEP_IFACE_LAST = SNDRV_HWDEP_IFACE_USB_STREAM
115 };
116 
117 struct snd_hwdep_info {
118  unsigned int device; /* WR: device number */
119  int card; /* R: card number */
120  unsigned char id[64]; /* ID (user selectable) */
121  unsigned char name[80]; /* hwdep name */
122  int iface; /* hwdep interface */
123  unsigned char reserved[64]; /* reserved for future */
124 };
125 
126 /* generic DSP loader */
127 struct snd_hwdep_dsp_status {
128  unsigned int version; /* R: driver-specific version */
129  unsigned char id[32]; /* R: driver-specific ID string */
130  unsigned int num_dsps; /* R: number of DSP images to transfer */
131  unsigned int dsp_loaded; /* R: bit flags indicating the loaded DSPs */
132  unsigned int chip_ready; /* R: 1 = initialization finished */
133  unsigned char reserved[16]; /* reserved for future use */
134 };
135 
136 struct snd_hwdep_dsp_image {
137  unsigned int index; /* W: DSP index */
138  unsigned char name[64]; /* W: ID (e.g. file name) */
139  unsigned char __user *image; /* W: binary image */
140  size_t length; /* W: size of image in bytes */
141  unsigned long driver_data; /* W: driver-specific data */
142 };
143 
144 #define SNDRV_HWDEP_IOCTL_PVERSION _IOR ('H', 0x00, int)
145 #define SNDRV_HWDEP_IOCTL_INFO _IOR ('H', 0x01, struct snd_hwdep_info)
146 #define SNDRV_HWDEP_IOCTL_DSP_STATUS _IOR('H', 0x02, struct snd_hwdep_dsp_status)
147 #define SNDRV_HWDEP_IOCTL_DSP_LOAD _IOW('H', 0x03, struct snd_hwdep_dsp_image)
148 
149 /*****************************************************************************
150  * *
151  * Digital Audio (PCM) interface - /dev/snd/pcm?? *
152  * *
153  *****************************************************************************/
154 
155 #define SNDRV_PCM_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 10)
156 
157 typedef unsigned long snd_pcm_uframes_t;
158 typedef signed long snd_pcm_sframes_t;
159 
160 enum {
161  SNDRV_PCM_CLASS_GENERIC = 0, /* standard mono or stereo device */
162  SNDRV_PCM_CLASS_MULTI, /* multichannel device */
163  SNDRV_PCM_CLASS_MODEM, /* software modem class */
164  SNDRV_PCM_CLASS_DIGITIZER, /* digitizer class */
165  /* Don't forget to change the following: */
166  SNDRV_PCM_CLASS_LAST = SNDRV_PCM_CLASS_DIGITIZER,
167 };
168 
169 enum {
170  SNDRV_PCM_SUBCLASS_GENERIC_MIX = 0, /* mono or stereo subdevices are mixed together */
171  SNDRV_PCM_SUBCLASS_MULTI_MIX, /* multichannel subdevices are mixed together */
172  /* Don't forget to change the following: */
173  SNDRV_PCM_SUBCLASS_LAST = SNDRV_PCM_SUBCLASS_MULTI_MIX,
174 };
175 
176 enum {
177  SNDRV_PCM_STREAM_PLAYBACK = 0,
178  SNDRV_PCM_STREAM_CAPTURE,
179  SNDRV_PCM_STREAM_LAST = SNDRV_PCM_STREAM_CAPTURE,
180 };
181 
182 typedef int __bitwise snd_pcm_access_t;
183 #define SNDRV_PCM_ACCESS_MMAP_INTERLEAVED ((__force snd_pcm_access_t) 0) /* interleaved mmap */
184 #define SNDRV_PCM_ACCESS_MMAP_NONINTERLEAVED ((__force snd_pcm_access_t) 1) /* noninterleaved mmap */
185 #define SNDRV_PCM_ACCESS_MMAP_COMPLEX ((__force snd_pcm_access_t) 2) /* complex mmap */
186 #define SNDRV_PCM_ACCESS_RW_INTERLEAVED ((__force snd_pcm_access_t) 3) /* readi/writei */
187 #define SNDRV_PCM_ACCESS_RW_NONINTERLEAVED ((__force snd_pcm_access_t) 4) /* readn/writen */
188 #define SNDRV_PCM_ACCESS_LAST SNDRV_PCM_ACCESS_RW_NONINTERLEAVED
189 
190 typedef int __bitwise snd_pcm_format_t;
191 #define SNDRV_PCM_FORMAT_S8 ((__force snd_pcm_format_t) 0)
192 #define SNDRV_PCM_FORMAT_U8 ((__force snd_pcm_format_t) 1)
193 #define SNDRV_PCM_FORMAT_S16_LE ((__force snd_pcm_format_t) 2)
194 #define SNDRV_PCM_FORMAT_S16_BE ((__force snd_pcm_format_t) 3)
195 #define SNDRV_PCM_FORMAT_U16_LE ((__force snd_pcm_format_t) 4)
196 #define SNDRV_PCM_FORMAT_U16_BE ((__force snd_pcm_format_t) 5)
197 #define SNDRV_PCM_FORMAT_S24_LE ((__force snd_pcm_format_t) 6) /* low three bytes */
198 #define SNDRV_PCM_FORMAT_S24_BE ((__force snd_pcm_format_t) 7) /* low three bytes */
199 #define SNDRV_PCM_FORMAT_U24_LE ((__force snd_pcm_format_t) 8) /* low three bytes */
200 #define SNDRV_PCM_FORMAT_U24_BE ((__force snd_pcm_format_t) 9) /* low three bytes */
201 #define SNDRV_PCM_FORMAT_S32_LE ((__force snd_pcm_format_t) 10)
202 #define SNDRV_PCM_FORMAT_S32_BE ((__force snd_pcm_format_t) 11)
203 #define SNDRV_PCM_FORMAT_U32_LE ((__force snd_pcm_format_t) 12)
204 #define SNDRV_PCM_FORMAT_U32_BE ((__force snd_pcm_format_t) 13)
205 #define SNDRV_PCM_FORMAT_FLOAT_LE ((__force snd_pcm_format_t) 14) /* 4-byte float, IEEE-754 32-bit, range -1.0 to 1.0 */
206 #define SNDRV_PCM_FORMAT_FLOAT_BE ((__force snd_pcm_format_t) 15) /* 4-byte float, IEEE-754 32-bit, range -1.0 to 1.0 */
207 #define SNDRV_PCM_FORMAT_FLOAT64_LE ((__force snd_pcm_format_t) 16) /* 8-byte float, IEEE-754 64-bit, range -1.0 to 1.0 */
208 #define SNDRV_PCM_FORMAT_FLOAT64_BE ((__force snd_pcm_format_t) 17) /* 8-byte float, IEEE-754 64-bit, range -1.0 to 1.0 */
209 #define SNDRV_PCM_FORMAT_IEC958_SUBFRAME_LE ((__force snd_pcm_format_t) 18) /* IEC-958 subframe, Little Endian */
210 #define SNDRV_PCM_FORMAT_IEC958_SUBFRAME_BE ((__force snd_pcm_format_t) 19) /* IEC-958 subframe, Big Endian */
211 #define SNDRV_PCM_FORMAT_MU_LAW ((__force snd_pcm_format_t) 20)
212 #define SNDRV_PCM_FORMAT_A_LAW ((__force snd_pcm_format_t) 21)
213 #define SNDRV_PCM_FORMAT_IMA_ADPCM ((__force snd_pcm_format_t) 22)
214 #define SNDRV_PCM_FORMAT_MPEG ((__force snd_pcm_format_t) 23)
215 #define SNDRV_PCM_FORMAT_GSM ((__force snd_pcm_format_t) 24)
216 #define SNDRV_PCM_FORMAT_SPECIAL ((__force snd_pcm_format_t) 31)
217 #define SNDRV_PCM_FORMAT_S24_3LE ((__force snd_pcm_format_t) 32) /* in three bytes */
218 #define SNDRV_PCM_FORMAT_S24_3BE ((__force snd_pcm_format_t) 33) /* in three bytes */
219 #define SNDRV_PCM_FORMAT_U24_3LE ((__force snd_pcm_format_t) 34) /* in three bytes */
220 #define SNDRV_PCM_FORMAT_U24_3BE ((__force snd_pcm_format_t) 35) /* in three bytes */
221 #define SNDRV_PCM_FORMAT_S20_3LE ((__force snd_pcm_format_t) 36) /* in three bytes */
222 #define SNDRV_PCM_FORMAT_S20_3BE ((__force snd_pcm_format_t) 37) /* in three bytes */
223 #define SNDRV_PCM_FORMAT_U20_3LE ((__force snd_pcm_format_t) 38) /* in three bytes */
224 #define SNDRV_PCM_FORMAT_U20_3BE ((__force snd_pcm_format_t) 39) /* in three bytes */
225 #define SNDRV_PCM_FORMAT_S18_3LE ((__force snd_pcm_format_t) 40) /* in three bytes */
226 #define SNDRV_PCM_FORMAT_S18_3BE ((__force snd_pcm_format_t) 41) /* in three bytes */
227 #define SNDRV_PCM_FORMAT_U18_3LE ((__force snd_pcm_format_t) 42) /* in three bytes */
228 #define SNDRV_PCM_FORMAT_U18_3BE ((__force snd_pcm_format_t) 43) /* in three bytes */
229 #define SNDRV_PCM_FORMAT_G723_24 ((__force snd_pcm_format_t) 44) /* 8 samples in 3 bytes */
230 #define SNDRV_PCM_FORMAT_G723_24_1B ((__force snd_pcm_format_t) 45) /* 1 sample in 1 byte */
231 #define SNDRV_PCM_FORMAT_G723_40 ((__force snd_pcm_format_t) 46) /* 8 Samples in 5 bytes */
232 #define SNDRV_PCM_FORMAT_G723_40_1B ((__force snd_pcm_format_t) 47) /* 1 sample in 1 byte */
233 #define SNDRV_PCM_FORMAT_LAST SNDRV_PCM_FORMAT_G723_40_1B
234 
235 #ifdef SNDRV_LITTLE_ENDIAN
236 #define SNDRV_PCM_FORMAT_S16 SNDRV_PCM_FORMAT_S16_LE
237 #define SNDRV_PCM_FORMAT_U16 SNDRV_PCM_FORMAT_U16_LE
238 #define SNDRV_PCM_FORMAT_S24 SNDRV_PCM_FORMAT_S24_LE
239 #define SNDRV_PCM_FORMAT_U24 SNDRV_PCM_FORMAT_U24_LE
240 #define SNDRV_PCM_FORMAT_S32 SNDRV_PCM_FORMAT_S32_LE
241 #define SNDRV_PCM_FORMAT_U32 SNDRV_PCM_FORMAT_U32_LE
242 #define SNDRV_PCM_FORMAT_FLOAT SNDRV_PCM_FORMAT_FLOAT_LE
243 #define SNDRV_PCM_FORMAT_FLOAT64 SNDRV_PCM_FORMAT_FLOAT64_LE
244 #define SNDRV_PCM_FORMAT_IEC958_SUBFRAME SNDRV_PCM_FORMAT_IEC958_SUBFRAME_LE
245 #endif
246 #ifdef SNDRV_BIG_ENDIAN
247 #define SNDRV_PCM_FORMAT_S16 SNDRV_PCM_FORMAT_S16_BE
248 #define SNDRV_PCM_FORMAT_U16 SNDRV_PCM_FORMAT_U16_BE
249 #define SNDRV_PCM_FORMAT_S24 SNDRV_PCM_FORMAT_S24_BE
250 #define SNDRV_PCM_FORMAT_U24 SNDRV_PCM_FORMAT_U24_BE
251 #define SNDRV_PCM_FORMAT_S32 SNDRV_PCM_FORMAT_S32_BE
252 #define SNDRV_PCM_FORMAT_U32 SNDRV_PCM_FORMAT_U32_BE
253 #define SNDRV_PCM_FORMAT_FLOAT SNDRV_PCM_FORMAT_FLOAT_BE
254 #define SNDRV_PCM_FORMAT_FLOAT64 SNDRV_PCM_FORMAT_FLOAT64_BE
255 #define SNDRV_PCM_FORMAT_IEC958_SUBFRAME SNDRV_PCM_FORMAT_IEC958_SUBFRAME_BE
256 #endif
257 
258 typedef int __bitwise snd_pcm_subformat_t;
259 #define SNDRV_PCM_SUBFORMAT_STD ((__force snd_pcm_subformat_t) 0)
260 #define SNDRV_PCM_SUBFORMAT_LAST SNDRV_PCM_SUBFORMAT_STD
261 
262 #define SNDRV_PCM_INFO_MMAP 0x00000001 /* hardware supports mmap */
263 #define SNDRV_PCM_INFO_MMAP_VALID 0x00000002 /* period data are valid during transfer */
264 #define SNDRV_PCM_INFO_DOUBLE 0x00000004 /* Double buffering needed for PCM start/stop */
265 #define SNDRV_PCM_INFO_BATCH 0x00000010 /* double buffering */
266 #define SNDRV_PCM_INFO_INTERLEAVED 0x00000100 /* channels are interleaved */
267 #define SNDRV_PCM_INFO_NONINTERLEAVED 0x00000200 /* channels are not interleaved */
268 #define SNDRV_PCM_INFO_COMPLEX 0x00000400 /* complex frame organization (mmap only) */
269 #define SNDRV_PCM_INFO_BLOCK_TRANSFER 0x00010000 /* hardware transfer block of samples */
270 #define SNDRV_PCM_INFO_OVERRANGE 0x00020000 /* hardware supports ADC (capture) overrange detection */
271 #define SNDRV_PCM_INFO_RESUME 0x00040000 /* hardware supports stream resume after suspend */
272 #define SNDRV_PCM_INFO_PAUSE 0x00080000 /* pause ioctl is supported */
273 #define SNDRV_PCM_INFO_HALF_DUPLEX 0x00100000 /* only half duplex */
274 #define SNDRV_PCM_INFO_JOINT_DUPLEX 0x00200000 /* playback and capture stream are somewhat correlated */
275 #define SNDRV_PCM_INFO_SYNC_START 0x00400000 /* pcm support some kind of sync go */
276 #define SNDRV_PCM_INFO_NO_PERIOD_WAKEUP 0x00800000 /* period wakeup can be disabled */
277 #define SNDRV_PCM_INFO_FIFO_IN_FRAMES 0x80000000 /* internal kernel flag - FIFO size is in frames */
278 
279 typedef int __bitwise snd_pcm_state_t;
280 #define SNDRV_PCM_STATE_OPEN ((__force snd_pcm_state_t) 0) /* stream is open */
281 #define SNDRV_PCM_STATE_SETUP ((__force snd_pcm_state_t) 1) /* stream has a setup */
282 #define SNDRV_PCM_STATE_PREPARED ((__force snd_pcm_state_t) 2) /* stream is ready to start */
283 #define SNDRV_PCM_STATE_RUNNING ((__force snd_pcm_state_t) 3) /* stream is running */
284 #define SNDRV_PCM_STATE_XRUN ((__force snd_pcm_state_t) 4) /* stream reached an xrun */
285 #define SNDRV_PCM_STATE_DRAINING ((__force snd_pcm_state_t) 5) /* stream is draining */
286 #define SNDRV_PCM_STATE_PAUSED ((__force snd_pcm_state_t) 6) /* stream is paused */
287 #define SNDRV_PCM_STATE_SUSPENDED ((__force snd_pcm_state_t) 7) /* hardware is suspended */
288 #define SNDRV_PCM_STATE_DISCONNECTED ((__force snd_pcm_state_t) 8) /* hardware is disconnected */
289 #define SNDRV_PCM_STATE_LAST SNDRV_PCM_STATE_DISCONNECTED
290 
291 enum {
292  SNDRV_PCM_MMAP_OFFSET_DATA = 0x00000000,
293  SNDRV_PCM_MMAP_OFFSET_STATUS = 0x80000000,
294  SNDRV_PCM_MMAP_OFFSET_CONTROL = 0x81000000,
295 };
296 
297 union snd_pcm_sync_id {
298  unsigned char id[16];
299  unsigned short id16[8];
300  unsigned int id32[4];
301 };
302 
303 struct snd_pcm_info {
304  unsigned int device; /* RO/WR (control): device number */
305  unsigned int subdevice; /* RO/WR (control): subdevice number */
306  int stream; /* RO/WR (control): stream direction */
307  int card; /* R: card number */
308  unsigned char id[64]; /* ID (user selectable) */
309  unsigned char name[80]; /* name of this device */
310  unsigned char subname[32]; /* subdevice name */
311  int dev_class; /* SNDRV_PCM_CLASS_* */
312  int dev_subclass; /* SNDRV_PCM_SUBCLASS_* */
313  unsigned int subdevices_count;
314  unsigned int subdevices_avail;
315  union snd_pcm_sync_id sync; /* hardware synchronization ID */
316  unsigned char reserved[64]; /* reserved for future... */
317 };
318 
319 typedef int snd_pcm_hw_param_t;
320 #define SNDRV_PCM_HW_PARAM_ACCESS 0 /* Access type */
321 #define SNDRV_PCM_HW_PARAM_FORMAT 1 /* Format */
322 #define SNDRV_PCM_HW_PARAM_SUBFORMAT 2 /* Subformat */
323 #define SNDRV_PCM_HW_PARAM_FIRST_MASK SNDRV_PCM_HW_PARAM_ACCESS
324 #define SNDRV_PCM_HW_PARAM_LAST_MASK SNDRV_PCM_HW_PARAM_SUBFORMAT
325 
326 #define SNDRV_PCM_HW_PARAM_SAMPLE_BITS 8 /* Bits per sample */
327 #define SNDRV_PCM_HW_PARAM_FRAME_BITS 9 /* Bits per frame */
328 #define SNDRV_PCM_HW_PARAM_CHANNELS 10 /* Channels */
329 #define SNDRV_PCM_HW_PARAM_RATE 11 /* Approx rate */
330 #define SNDRV_PCM_HW_PARAM_PERIOD_TIME 12 /* Approx distance between
331  * interrupts in us
332  */
333 #define SNDRV_PCM_HW_PARAM_PERIOD_SIZE 13 /* Approx frames between
334  * interrupts
335  */
336 #define SNDRV_PCM_HW_PARAM_PERIOD_BYTES 14 /* Approx bytes between
337  * interrupts
338  */
339 #define SNDRV_PCM_HW_PARAM_PERIODS 15 /* Approx interrupts per
340  * buffer
341  */
342 #define SNDRV_PCM_HW_PARAM_BUFFER_TIME 16 /* Approx duration of buffer
343  * in us
344  */
345 #define SNDRV_PCM_HW_PARAM_BUFFER_SIZE 17 /* Size of buffer in frames */
346 #define SNDRV_PCM_HW_PARAM_BUFFER_BYTES 18 /* Size of buffer in bytes */
347 #define SNDRV_PCM_HW_PARAM_TICK_TIME 19 /* Approx tick duration in us */
348 #define SNDRV_PCM_HW_PARAM_FIRST_INTERVAL SNDRV_PCM_HW_PARAM_SAMPLE_BITS
349 #define SNDRV_PCM_HW_PARAM_LAST_INTERVAL SNDRV_PCM_HW_PARAM_TICK_TIME
350 
351 #define SNDRV_PCM_HW_PARAMS_NORESAMPLE (1<<0) /* avoid rate resampling */
352 #define SNDRV_PCM_HW_PARAMS_EXPORT_BUFFER (1<<1) /* export buffer */
353 #define SNDRV_PCM_HW_PARAMS_NO_PERIOD_WAKEUP (1<<2) /* disable period wakeups */
354 
355 struct snd_interval {
356  unsigned int min, max;
357  unsigned int openmin:1,
358  openmax:1,
359  integer:1,
360  empty:1;
361 };
362 
363 #define SNDRV_MASK_MAX 256
364 
365 struct snd_mask {
366  __u32 bits[(SNDRV_MASK_MAX+31)/32];
367 };
368 
369 struct snd_pcm_hw_params {
370  unsigned int flags;
371  struct snd_mask masks[SNDRV_PCM_HW_PARAM_LAST_MASK -
372  SNDRV_PCM_HW_PARAM_FIRST_MASK + 1];
373  struct snd_mask mres[5]; /* reserved masks */
374  struct snd_interval intervals[SNDRV_PCM_HW_PARAM_LAST_INTERVAL -
375  SNDRV_PCM_HW_PARAM_FIRST_INTERVAL + 1];
376  struct snd_interval ires[9]; /* reserved intervals */
377  unsigned int rmask; /* W: requested masks */
378  unsigned int cmask; /* R: changed masks */
379  unsigned int info; /* R: Info flags for returned setup */
380  unsigned int msbits; /* R: used most significant bits */
381  unsigned int rate_num; /* R: rate numerator */
382  unsigned int rate_den; /* R: rate denominator */
383  snd_pcm_uframes_t fifo_size; /* R: chip FIFO size in frames */
384  unsigned char reserved[64]; /* reserved for future */
385 };
386 
387 enum {
388  SNDRV_PCM_TSTAMP_NONE = 0,
389  SNDRV_PCM_TSTAMP_ENABLE,
390  SNDRV_PCM_TSTAMP_LAST = SNDRV_PCM_TSTAMP_ENABLE,
391 };
392 
393 struct snd_pcm_sw_params {
394  int tstamp_mode; /* timestamp mode */
395  unsigned int period_step;
396  unsigned int sleep_min; /* min ticks to sleep */
397  snd_pcm_uframes_t avail_min; /* min avail frames for wakeup */
398  snd_pcm_uframes_t xfer_align; /* obsolete: xfer size need to be a multiple */
399  snd_pcm_uframes_t start_threshold; /* min hw_avail frames for automatic start */
400  snd_pcm_uframes_t stop_threshold; /* min avail frames for automatic stop */
401  snd_pcm_uframes_t silence_threshold; /* min distance from noise for silence filling */
402  snd_pcm_uframes_t silence_size; /* silence block size */
403  snd_pcm_uframes_t boundary; /* pointers wrap point */
404  unsigned char reserved[64]; /* reserved for future */
405 };
406 
407 struct snd_pcm_channel_info {
408  unsigned int channel;
409  __kernel_off_t offset; /* mmap offset */
410  unsigned int first; /* offset to first sample in bits */
411  unsigned int step; /* samples distance in bits */
412 };
413 
414 struct snd_pcm_status {
415  snd_pcm_state_t state; /* stream state */
416  struct timespec trigger_tstamp; /* time when stream was started/stopped/paused */
417  struct timespec tstamp; /* reference timestamp */
418  snd_pcm_uframes_t appl_ptr; /* appl ptr */
419  snd_pcm_uframes_t hw_ptr; /* hw ptr */
420  snd_pcm_sframes_t delay; /* current delay in frames */
421  snd_pcm_uframes_t avail; /* number of frames available */
422  snd_pcm_uframes_t avail_max; /* max frames available on hw since last status */
423  snd_pcm_uframes_t overrange; /* count of ADC (capture) overrange detections from last status */
424  snd_pcm_state_t suspended_state; /* suspended stream state */
425  unsigned char reserved[60]; /* must be filled with zero */
426 };
427 
428 struct snd_pcm_mmap_status {
429  snd_pcm_state_t state; /* RO: state - SNDRV_PCM_STATE_XXXX */
430  int pad1; /* Needed for 64 bit alignment */
431  snd_pcm_uframes_t hw_ptr; /* RO: hw ptr (0...boundary-1) */
432  struct timespec tstamp; /* Timestamp */
433  snd_pcm_state_t suspended_state; /* RO: suspended stream state */
434 };
435 
436 struct snd_pcm_mmap_control {
437  snd_pcm_uframes_t appl_ptr; /* RW: appl ptr (0...boundary-1) */
438  snd_pcm_uframes_t avail_min; /* RW: min available frames for wakeup */
439 };
440 
441 #define SNDRV_PCM_SYNC_PTR_HWSYNC (1<<0) /* execute hwsync */
442 #define SNDRV_PCM_SYNC_PTR_APPL (1<<1) /* get appl_ptr from driver (r/w op) */
443 #define SNDRV_PCM_SYNC_PTR_AVAIL_MIN (1<<2) /* get avail_min from driver */
444 
445 struct snd_pcm_sync_ptr {
446  unsigned int flags;
447  union {
448  struct snd_pcm_mmap_status status;
449  unsigned char reserved[64];
450  } s;
451  union {
452  struct snd_pcm_mmap_control control;
453  unsigned char reserved[64];
454  } c;
455 };
456 
457 struct snd_xferi {
458  snd_pcm_sframes_t result;
459  void __user *buf;
460  snd_pcm_uframes_t frames;
461 };
462 
463 struct snd_xfern {
464  snd_pcm_sframes_t result;
465  void __user * __user *bufs;
466  snd_pcm_uframes_t frames;
467 };
468 
469 enum {
470  SNDRV_PCM_TSTAMP_TYPE_GETTIMEOFDAY = 0, /* gettimeofday equivalent */
471  SNDRV_PCM_TSTAMP_TYPE_MONOTONIC, /* posix_clock_monotonic equivalent */
472  SNDRV_PCM_TSTAMP_TYPE_LAST = SNDRV_PCM_TSTAMP_TYPE_MONOTONIC,
473 };
474 
475 /* channel positions */
476 enum {
477  SNDRV_CHMAP_UNKNOWN = 0,
478  SNDRV_CHMAP_NA, /* N/A, silent */
479  SNDRV_CHMAP_MONO, /* mono stream */
480  /* this follows the alsa-lib mixer channel value + 3 */
481  SNDRV_CHMAP_FL, /* front left */
482  SNDRV_CHMAP_FR, /* front right */
483  SNDRV_CHMAP_RL, /* rear left */
484  SNDRV_CHMAP_RR, /* rear right */
485  SNDRV_CHMAP_FC, /* front center */
486  SNDRV_CHMAP_LFE, /* LFE */
487  SNDRV_CHMAP_SL, /* side left */
488  SNDRV_CHMAP_SR, /* side right */
489  SNDRV_CHMAP_RC, /* rear center */
490  /* new definitions */
491  SNDRV_CHMAP_FLC, /* front left center */
492  SNDRV_CHMAP_FRC, /* front right center */
493  SNDRV_CHMAP_RLC, /* rear left center */
494  SNDRV_CHMAP_RRC, /* rear right center */
495  SNDRV_CHMAP_FLW, /* front left wide */
496  SNDRV_CHMAP_FRW, /* front right wide */
497  SNDRV_CHMAP_FLH, /* front left high */
498  SNDRV_CHMAP_FCH, /* front center high */
499  SNDRV_CHMAP_FRH, /* front right high */
500  SNDRV_CHMAP_TC, /* top center */
501  SNDRV_CHMAP_TFL, /* top front left */
502  SNDRV_CHMAP_TFR, /* top front right */
503  SNDRV_CHMAP_TFC, /* top front center */
504  SNDRV_CHMAP_TRL, /* top rear left */
505  SNDRV_CHMAP_TRR, /* top rear right */
506  SNDRV_CHMAP_TRC, /* top rear center */
507  SNDRV_CHMAP_LAST = SNDRV_CHMAP_TRC,
508 };
509 
510 #define SNDRV_CHMAP_POSITION_MASK 0xffff
511 #define SNDRV_CHMAP_PHASE_INVERSE (0x01 << 16)
512 #define SNDRV_CHMAP_DRIVER_SPEC (0x02 << 16)
513 
514 #define SNDRV_PCM_IOCTL_PVERSION _IOR('A', 0x00, int)
515 #define SNDRV_PCM_IOCTL_INFO _IOR('A', 0x01, struct snd_pcm_info)
516 #define SNDRV_PCM_IOCTL_TSTAMP _IOW('A', 0x02, int)
517 #define SNDRV_PCM_IOCTL_TTSTAMP _IOW('A', 0x03, int)
518 #define SNDRV_PCM_IOCTL_HW_REFINE _IOWR('A', 0x10, struct snd_pcm_hw_params)
519 #define SNDRV_PCM_IOCTL_HW_PARAMS _IOWR('A', 0x11, struct snd_pcm_hw_params)
520 #define SNDRV_PCM_IOCTL_HW_FREE _IO('A', 0x12)
521 #define SNDRV_PCM_IOCTL_SW_PARAMS _IOWR('A', 0x13, struct snd_pcm_sw_params)
522 #define SNDRV_PCM_IOCTL_STATUS _IOR('A', 0x20, struct snd_pcm_status)
523 #define SNDRV_PCM_IOCTL_DELAY _IOR('A', 0x21, snd_pcm_sframes_t)
524 #define SNDRV_PCM_IOCTL_HWSYNC _IO('A', 0x22)
525 #define SNDRV_PCM_IOCTL_SYNC_PTR _IOWR('A', 0x23, struct snd_pcm_sync_ptr)
526 #define SNDRV_PCM_IOCTL_CHANNEL_INFO _IOR('A', 0x32, struct snd_pcm_channel_info)
527 #define SNDRV_PCM_IOCTL_PREPARE _IO('A', 0x40)
528 #define SNDRV_PCM_IOCTL_RESET _IO('A', 0x41)
529 #define SNDRV_PCM_IOCTL_START _IO('A', 0x42)
530 #define SNDRV_PCM_IOCTL_DROP _IO('A', 0x43)
531 #define SNDRV_PCM_IOCTL_DRAIN _IO('A', 0x44)
532 #define SNDRV_PCM_IOCTL_PAUSE _IOW('A', 0x45, int)
533 #define SNDRV_PCM_IOCTL_REWIND _IOW('A', 0x46, snd_pcm_uframes_t)
534 #define SNDRV_PCM_IOCTL_RESUME _IO('A', 0x47)
535 #define SNDRV_PCM_IOCTL_XRUN _IO('A', 0x48)
536 #define SNDRV_PCM_IOCTL_FORWARD _IOW('A', 0x49, snd_pcm_uframes_t)
537 #define SNDRV_PCM_IOCTL_WRITEI_FRAMES _IOW('A', 0x50, struct snd_xferi)
538 #define SNDRV_PCM_IOCTL_READI_FRAMES _IOR('A', 0x51, struct snd_xferi)
539 #define SNDRV_PCM_IOCTL_WRITEN_FRAMES _IOW('A', 0x52, struct snd_xfern)
540 #define SNDRV_PCM_IOCTL_READN_FRAMES _IOR('A', 0x53, struct snd_xfern)
541 #define SNDRV_PCM_IOCTL_LINK _IOW('A', 0x60, int)
542 #define SNDRV_PCM_IOCTL_UNLINK _IO('A', 0x61)
543 
544 /*****************************************************************************
545  * *
546  * MIDI v1.0 interface *
547  * *
548  *****************************************************************************/
549 
550 /*
551  * Raw MIDI section - /dev/snd/midi??
552  */
553 
554 #define SNDRV_RAWMIDI_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 0)
555 
556 enum {
557  SNDRV_RAWMIDI_STREAM_OUTPUT = 0,
558  SNDRV_RAWMIDI_STREAM_INPUT,
559  SNDRV_RAWMIDI_STREAM_LAST = SNDRV_RAWMIDI_STREAM_INPUT,
560 };
561 
562 #define SNDRV_RAWMIDI_INFO_OUTPUT 0x00000001
563 #define SNDRV_RAWMIDI_INFO_INPUT 0x00000002
564 #define SNDRV_RAWMIDI_INFO_DUPLEX 0x00000004
565 
566 struct snd_rawmidi_info {
567  unsigned int device; /* RO/WR (control): device number */
568  unsigned int subdevice; /* RO/WR (control): subdevice number */
569  int stream; /* WR: stream */
570  int card; /* R: card number */
571  unsigned int flags; /* SNDRV_RAWMIDI_INFO_XXXX */
572  unsigned char id[64]; /* ID (user selectable) */
573  unsigned char name[80]; /* name of device */
574  unsigned char subname[32]; /* name of active or selected subdevice */
575  unsigned int subdevices_count;
576  unsigned int subdevices_avail;
577  unsigned char reserved[64]; /* reserved for future use */
578 };
579 
580 struct snd_rawmidi_params {
581  int stream;
582  size_t buffer_size; /* queue size in bytes */
583  size_t avail_min; /* minimum avail bytes for wakeup */
584  unsigned int no_active_sensing: 1; /* do not send active sensing byte in close() */
585  unsigned char reserved[16]; /* reserved for future use */
586 };
587 
588 struct snd_rawmidi_status {
589  int stream;
590  struct timespec tstamp; /* Timestamp */
591  size_t avail; /* available bytes */
592  size_t xruns; /* count of overruns since last status (in bytes) */
593  unsigned char reserved[16]; /* reserved for future use */
594 };
595 
596 #define SNDRV_RAWMIDI_IOCTL_PVERSION _IOR('W', 0x00, int)
597 #define SNDRV_RAWMIDI_IOCTL_INFO _IOR('W', 0x01, struct snd_rawmidi_info)
598 #define SNDRV_RAWMIDI_IOCTL_PARAMS _IOWR('W', 0x10, struct snd_rawmidi_params)
599 #define SNDRV_RAWMIDI_IOCTL_STATUS _IOWR('W', 0x20, struct snd_rawmidi_status)
600 #define SNDRV_RAWMIDI_IOCTL_DROP _IOW('W', 0x30, int)
601 #define SNDRV_RAWMIDI_IOCTL_DRAIN _IOW('W', 0x31, int)
602 
603 /*
604  * Timer section - /dev/snd/timer
605  */
606 
607 #define SNDRV_TIMER_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 6)
608 
609 enum {
610  SNDRV_TIMER_CLASS_NONE = -1,
611  SNDRV_TIMER_CLASS_SLAVE = 0,
612  SNDRV_TIMER_CLASS_GLOBAL,
613  SNDRV_TIMER_CLASS_CARD,
614  SNDRV_TIMER_CLASS_PCM,
615  SNDRV_TIMER_CLASS_LAST = SNDRV_TIMER_CLASS_PCM,
616 };
617 
618 /* slave timer classes */
619 enum {
620  SNDRV_TIMER_SCLASS_NONE = 0,
621  SNDRV_TIMER_SCLASS_APPLICATION,
622  SNDRV_TIMER_SCLASS_SEQUENCER, /* alias */
623  SNDRV_TIMER_SCLASS_OSS_SEQUENCER, /* alias */
624  SNDRV_TIMER_SCLASS_LAST = SNDRV_TIMER_SCLASS_OSS_SEQUENCER,
625 };
626 
627 /* global timers (device member) */
628 #define SNDRV_TIMER_GLOBAL_SYSTEM 0
629 #define SNDRV_TIMER_GLOBAL_RTC 1
630 #define SNDRV_TIMER_GLOBAL_HPET 2
631 #define SNDRV_TIMER_GLOBAL_HRTIMER 3
632 
633 /* info flags */
634 #define SNDRV_TIMER_FLG_SLAVE (1<<0) /* cannot be controlled */
635 
636 struct snd_timer_id {
637  int dev_class;
638  int dev_sclass;
639  int card;
640  int device;
641  int subdevice;
642 };
643 
644 struct snd_timer_ginfo {
645  struct snd_timer_id tid; /* requested timer ID */
646  unsigned int flags; /* timer flags - SNDRV_TIMER_FLG_* */
647  int card; /* card number */
648  unsigned char id[64]; /* timer identification */
649  unsigned char name[80]; /* timer name */
650  unsigned long reserved0; /* reserved for future use */
651  unsigned long resolution; /* average period resolution in ns */
652  unsigned long resolution_min; /* minimal period resolution in ns */
653  unsigned long resolution_max; /* maximal period resolution in ns */
654  unsigned int clients; /* active timer clients */
655  unsigned char reserved[32];
656 };
657 
658 struct snd_timer_gparams {
659  struct snd_timer_id tid; /* requested timer ID */
660  unsigned long period_num; /* requested precise period duration (in seconds) - numerator */
661  unsigned long period_den; /* requested precise period duration (in seconds) - denominator */
662  unsigned char reserved[32];
663 };
664 
665 struct snd_timer_gstatus {
666  struct snd_timer_id tid; /* requested timer ID */
667  unsigned long resolution; /* current period resolution in ns */
668  unsigned long resolution_num; /* precise current period resolution (in seconds) - numerator */
669  unsigned long resolution_den; /* precise current period resolution (in seconds) - denominator */
670  unsigned char reserved[32];
671 };
672 
673 struct snd_timer_select {
674  struct snd_timer_id id; /* bind to timer ID */
675  unsigned char reserved[32]; /* reserved */
676 };
677 
678 struct snd_timer_info {
679  unsigned int flags; /* timer flags - SNDRV_TIMER_FLG_* */
680  int card; /* card number */
681  unsigned char id[64]; /* timer identificator */
682  unsigned char name[80]; /* timer name */
683  unsigned long reserved0; /* reserved for future use */
684  unsigned long resolution; /* average period resolution in ns */
685  unsigned char reserved[64]; /* reserved */
686 };
687 
688 #define SNDRV_TIMER_PSFLG_AUTO (1<<0) /* auto start, otherwise one-shot */
689 #define SNDRV_TIMER_PSFLG_EXCLUSIVE (1<<1) /* exclusive use, precise start/stop/pause/continue */
690 #define SNDRV_TIMER_PSFLG_EARLY_EVENT (1<<2) /* write early event to the poll queue */
691 
692 struct snd_timer_params {
693  unsigned int flags; /* flags - SNDRV_MIXER_PSFLG_* */
694  unsigned int ticks; /* requested resolution in ticks */
695  unsigned int queue_size; /* total size of queue (32-1024) */
696  unsigned int reserved0; /* reserved, was: failure locations */
697  unsigned int filter; /* event filter (bitmask of SNDRV_TIMER_EVENT_*) */
698  unsigned char reserved[60]; /* reserved */
699 };
700 
701 struct snd_timer_status {
702  struct timespec tstamp; /* Timestamp - last update */
703  unsigned int resolution; /* current period resolution in ns */
704  unsigned int lost; /* counter of master tick lost */
705  unsigned int overrun; /* count of read queue overruns */
706  unsigned int queue; /* used queue size */
707  unsigned char reserved[64]; /* reserved */
708 };
709 
710 #define SNDRV_TIMER_IOCTL_PVERSION _IOR('T', 0x00, int)
711 #define SNDRV_TIMER_IOCTL_NEXT_DEVICE _IOWR('T', 0x01, struct snd_timer_id)
712 #define SNDRV_TIMER_IOCTL_TREAD _IOW('T', 0x02, int)
713 #define SNDRV_TIMER_IOCTL_GINFO _IOWR('T', 0x03, struct snd_timer_ginfo)
714 #define SNDRV_TIMER_IOCTL_GPARAMS _IOW('T', 0x04, struct snd_timer_gparams)
715 #define SNDRV_TIMER_IOCTL_GSTATUS _IOWR('T', 0x05, struct snd_timer_gstatus)
716 #define SNDRV_TIMER_IOCTL_SELECT _IOW('T', 0x10, struct snd_timer_select)
717 #define SNDRV_TIMER_IOCTL_INFO _IOR('T', 0x11, struct snd_timer_info)
718 #define SNDRV_TIMER_IOCTL_PARAMS _IOW('T', 0x12, struct snd_timer_params)
719 #define SNDRV_TIMER_IOCTL_STATUS _IOR('T', 0x14, struct snd_timer_status)
720 /* The following four ioctls are changed since 1.0.9 due to confliction */
721 #define SNDRV_TIMER_IOCTL_START _IO('T', 0xa0)
722 #define SNDRV_TIMER_IOCTL_STOP _IO('T', 0xa1)
723 #define SNDRV_TIMER_IOCTL_CONTINUE _IO('T', 0xa2)
724 #define SNDRV_TIMER_IOCTL_PAUSE _IO('T', 0xa3)
725 
726 struct snd_timer_read {
727  unsigned int resolution;
728  unsigned int ticks;
729 };
730 
731 enum {
732  SNDRV_TIMER_EVENT_RESOLUTION = 0, /* val = resolution in ns */
733  SNDRV_TIMER_EVENT_TICK, /* val = ticks */
734  SNDRV_TIMER_EVENT_START, /* val = resolution in ns */
735  SNDRV_TIMER_EVENT_STOP, /* val = 0 */
736  SNDRV_TIMER_EVENT_CONTINUE, /* val = resolution in ns */
737  SNDRV_TIMER_EVENT_PAUSE, /* val = 0 */
738  SNDRV_TIMER_EVENT_EARLY, /* val = 0, early event */
739  SNDRV_TIMER_EVENT_SUSPEND, /* val = 0 */
740  SNDRV_TIMER_EVENT_RESUME, /* val = resolution in ns */
741  /* master timer events for slave timer instances */
742  SNDRV_TIMER_EVENT_MSTART = SNDRV_TIMER_EVENT_START + 10,
743  SNDRV_TIMER_EVENT_MSTOP = SNDRV_TIMER_EVENT_STOP + 10,
744  SNDRV_TIMER_EVENT_MCONTINUE = SNDRV_TIMER_EVENT_CONTINUE + 10,
745  SNDRV_TIMER_EVENT_MPAUSE = SNDRV_TIMER_EVENT_PAUSE + 10,
746  SNDRV_TIMER_EVENT_MSUSPEND = SNDRV_TIMER_EVENT_SUSPEND + 10,
747  SNDRV_TIMER_EVENT_MRESUME = SNDRV_TIMER_EVENT_RESUME + 10,
748 };
749 
750 struct snd_timer_tread {
751  int event;
752  struct timespec tstamp;
753  unsigned int val;
754 };
755 
756 /****************************************************************************
757  * *
758  * Section for driver control interface - /dev/snd/control? *
759  * *
760  ****************************************************************************/
761 
762 #define SNDRV_CTL_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 7)
763 
764 struct snd_ctl_card_info {
765  int card; /* card number */
766  int pad; /* reserved for future (was type) */
767  unsigned char id[16]; /* ID of card (user selectable) */
768  unsigned char driver[16]; /* Driver name */
769  unsigned char name[32]; /* Short name of soundcard */
770  unsigned char longname[80]; /* name + info text about soundcard */
771  unsigned char reserved_[16]; /* reserved for future (was ID of mixer) */
772  unsigned char mixername[80]; /* visual mixer identification */
773  unsigned char components[128]; /* card components / fine identification, delimited with one space (AC97 etc..) */
774 };
775 
776 typedef int __bitwise snd_ctl_elem_type_t;
777 #define SNDRV_CTL_ELEM_TYPE_NONE ((__force snd_ctl_elem_type_t) 0) /* invalid */
778 #define SNDRV_CTL_ELEM_TYPE_BOOLEAN ((__force snd_ctl_elem_type_t) 1) /* boolean type */
779 #define SNDRV_CTL_ELEM_TYPE_INTEGER ((__force snd_ctl_elem_type_t) 2) /* integer type */
780 #define SNDRV_CTL_ELEM_TYPE_ENUMERATED ((__force snd_ctl_elem_type_t) 3) /* enumerated type */
781 #define SNDRV_CTL_ELEM_TYPE_BYTES ((__force snd_ctl_elem_type_t) 4) /* byte array */
782 #define SNDRV_CTL_ELEM_TYPE_IEC958 ((__force snd_ctl_elem_type_t) 5) /* IEC958 (S/PDIF) setup */
783 #define SNDRV_CTL_ELEM_TYPE_INTEGER64 ((__force snd_ctl_elem_type_t) 6) /* 64-bit integer type */
784 #define SNDRV_CTL_ELEM_TYPE_LAST SNDRV_CTL_ELEM_TYPE_INTEGER64
785 
786 typedef int __bitwise snd_ctl_elem_iface_t;
787 #define SNDRV_CTL_ELEM_IFACE_CARD ((__force snd_ctl_elem_iface_t) 0) /* global control */
788 #define SNDRV_CTL_ELEM_IFACE_HWDEP ((__force snd_ctl_elem_iface_t) 1) /* hardware dependent device */
789 #define SNDRV_CTL_ELEM_IFACE_MIXER ((__force snd_ctl_elem_iface_t) 2) /* virtual mixer device */
790 #define SNDRV_CTL_ELEM_IFACE_PCM ((__force snd_ctl_elem_iface_t) 3) /* PCM device */
791 #define SNDRV_CTL_ELEM_IFACE_RAWMIDI ((__force snd_ctl_elem_iface_t) 4) /* RawMidi device */
792 #define SNDRV_CTL_ELEM_IFACE_TIMER ((__force snd_ctl_elem_iface_t) 5) /* timer device */
793 #define SNDRV_CTL_ELEM_IFACE_SEQUENCER ((__force snd_ctl_elem_iface_t) 6) /* sequencer client */
794 #define SNDRV_CTL_ELEM_IFACE_LAST SNDRV_CTL_ELEM_IFACE_SEQUENCER
795 
796 #define SNDRV_CTL_ELEM_ACCESS_READ (1<<0)
797 #define SNDRV_CTL_ELEM_ACCESS_WRITE (1<<1)
798 #define SNDRV_CTL_ELEM_ACCESS_READWRITE (SNDRV_CTL_ELEM_ACCESS_READ|SNDRV_CTL_ELEM_ACCESS_WRITE)
799 #define SNDRV_CTL_ELEM_ACCESS_VOLATILE (1<<2) /* control value may be changed without a notification */
800 #define SNDRV_CTL_ELEM_ACCESS_TIMESTAMP (1<<3) /* when was control changed */
801 #define SNDRV_CTL_ELEM_ACCESS_TLV_READ (1<<4) /* TLV read is possible */
802 #define SNDRV_CTL_ELEM_ACCESS_TLV_WRITE (1<<5) /* TLV write is possible */
803 #define SNDRV_CTL_ELEM_ACCESS_TLV_READWRITE (SNDRV_CTL_ELEM_ACCESS_TLV_READ|SNDRV_CTL_ELEM_ACCESS_TLV_WRITE)
804 #define SNDRV_CTL_ELEM_ACCESS_TLV_COMMAND (1<<6) /* TLV command is possible */
805 #define SNDRV_CTL_ELEM_ACCESS_INACTIVE (1<<8) /* control does actually nothing, but may be updated */
806 #define SNDRV_CTL_ELEM_ACCESS_LOCK (1<<9) /* write lock */
807 #define SNDRV_CTL_ELEM_ACCESS_OWNER (1<<10) /* write lock owner */
808 #define SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK (1<<28) /* kernel use a TLV callback */
809 #define SNDRV_CTL_ELEM_ACCESS_USER (1<<29) /* user space element */
810 /* bits 30 and 31 are obsoleted (for indirect access) */
811 
812 /* for further details see the ACPI and PCI power management specification */
813 #define SNDRV_CTL_POWER_D0 0x0000 /* full On */
814 #define SNDRV_CTL_POWER_D1 0x0100 /* partial On */
815 #define SNDRV_CTL_POWER_D2 0x0200 /* partial On */
816 #define SNDRV_CTL_POWER_D3 0x0300 /* Off */
817 #define SNDRV_CTL_POWER_D3hot (SNDRV_CTL_POWER_D3|0x0000) /* Off, with power */
818 #define SNDRV_CTL_POWER_D3cold (SNDRV_CTL_POWER_D3|0x0001) /* Off, without power */
819 
820 struct snd_ctl_elem_id {
821  unsigned int numid; /* numeric identifier, zero = invalid */
822  snd_ctl_elem_iface_t iface; /* interface identifier */
823  unsigned int device; /* device/client number */
824  unsigned int subdevice; /* subdevice (substream) number */
825  unsigned char name[44]; /* ASCII name of item */
826  unsigned int index; /* index of item */
827 };
828 
829 struct snd_ctl_elem_list {
830  unsigned int offset; /* W: first element ID to get */
831  unsigned int space; /* W: count of element IDs to get */
832  unsigned int used; /* R: count of element IDs set */
833  unsigned int count; /* R: count of all elements */
834  struct snd_ctl_elem_id __user *pids; /* R: IDs */
835  unsigned char reserved[50];
836 };
837 
838 struct snd_ctl_elem_info {
839  struct snd_ctl_elem_id id; /* W: element ID */
840  snd_ctl_elem_type_t type; /* R: value type - SNDRV_CTL_ELEM_TYPE_* */
841  unsigned int access; /* R: value access (bitmask) - SNDRV_CTL_ELEM_ACCESS_* */
842  unsigned int count; /* count of values */
843  __kernel_pid_t owner; /* owner's PID of this control */
844  union {
845  struct {
846  long min; /* R: minimum value */
847  long max; /* R: maximum value */
848  long step; /* R: step (0 variable) */
849  } integer;
850  struct {
851  long long min; /* R: minimum value */
852  long long max; /* R: maximum value */
853  long long step; /* R: step (0 variable) */
854  } integer64;
855  struct {
856  unsigned int items; /* R: number of items */
857  unsigned int item; /* W: item number */
858  char name[64]; /* R: value name */
859  __u64 names_ptr; /* W: names list (ELEM_ADD only) */
860  unsigned int names_length;
861  } enumerated;
862  unsigned char reserved[128];
863  } value;
864  union {
865  unsigned short d[4]; /* dimensions */
866  unsigned short *d_ptr; /* indirect - obsoleted */
867  } dimen;
868  unsigned char reserved[64-4*sizeof(unsigned short)];
869 };
870 
871 struct snd_ctl_elem_value {
872  struct snd_ctl_elem_id id; /* W: element ID */
873  unsigned int indirect: 1; /* W: indirect access - obsoleted */
874  union {
875  union {
876  long value[128];
877  long *value_ptr; /* obsoleted */
878  } integer;
879  union {
880  long long value[64];
881  long long *value_ptr; /* obsoleted */
882  } integer64;
883  union {
884  unsigned int item[128];
885  unsigned int *item_ptr; /* obsoleted */
886  } enumerated;
887  union {
888  unsigned char data[512];
889  unsigned char *data_ptr; /* obsoleted */
890  } bytes;
891  struct snd_aes_iec958 iec958;
892  } value; /* RO */
893  struct timespec tstamp;
894  unsigned char reserved[128-sizeof(struct timespec)];
895 };
896 
897 struct snd_ctl_tlv {
898  unsigned int numid; /* control element numeric identification */
899  unsigned int length; /* in bytes aligned to 4 */
900  unsigned int tlv[0]; /* first TLV */
901 };
902 
903 #define SNDRV_CTL_IOCTL_PVERSION _IOR('U', 0x00, int)
904 #define SNDRV_CTL_IOCTL_CARD_INFO _IOR('U', 0x01, struct snd_ctl_card_info)
905 #define SNDRV_CTL_IOCTL_ELEM_LIST _IOWR('U', 0x10, struct snd_ctl_elem_list)
906 #define SNDRV_CTL_IOCTL_ELEM_INFO _IOWR('U', 0x11, struct snd_ctl_elem_info)
907 #define SNDRV_CTL_IOCTL_ELEM_READ _IOWR('U', 0x12, struct snd_ctl_elem_value)
908 #define SNDRV_CTL_IOCTL_ELEM_WRITE _IOWR('U', 0x13, struct snd_ctl_elem_value)
909 #define SNDRV_CTL_IOCTL_ELEM_LOCK _IOW('U', 0x14, struct snd_ctl_elem_id)
910 #define SNDRV_CTL_IOCTL_ELEM_UNLOCK _IOW('U', 0x15, struct snd_ctl_elem_id)
911 #define SNDRV_CTL_IOCTL_SUBSCRIBE_EVENTS _IOWR('U', 0x16, int)
912 #define SNDRV_CTL_IOCTL_ELEM_ADD _IOWR('U', 0x17, struct snd_ctl_elem_info)
913 #define SNDRV_CTL_IOCTL_ELEM_REPLACE _IOWR('U', 0x18, struct snd_ctl_elem_info)
914 #define SNDRV_CTL_IOCTL_ELEM_REMOVE _IOWR('U', 0x19, struct snd_ctl_elem_id)
915 #define SNDRV_CTL_IOCTL_TLV_READ _IOWR('U', 0x1a, struct snd_ctl_tlv)
916 #define SNDRV_CTL_IOCTL_TLV_WRITE _IOWR('U', 0x1b, struct snd_ctl_tlv)
917 #define SNDRV_CTL_IOCTL_TLV_COMMAND _IOWR('U', 0x1c, struct snd_ctl_tlv)
918 #define SNDRV_CTL_IOCTL_HWDEP_NEXT_DEVICE _IOWR('U', 0x20, int)
919 #define SNDRV_CTL_IOCTL_HWDEP_INFO _IOR('U', 0x21, struct snd_hwdep_info)
920 #define SNDRV_CTL_IOCTL_PCM_NEXT_DEVICE _IOR('U', 0x30, int)
921 #define SNDRV_CTL_IOCTL_PCM_INFO _IOWR('U', 0x31, struct snd_pcm_info)
922 #define SNDRV_CTL_IOCTL_PCM_PREFER_SUBDEVICE _IOW('U', 0x32, int)
923 #define SNDRV_CTL_IOCTL_RAWMIDI_NEXT_DEVICE _IOWR('U', 0x40, int)
924 #define SNDRV_CTL_IOCTL_RAWMIDI_INFO _IOWR('U', 0x41, struct snd_rawmidi_info)
925 #define SNDRV_CTL_IOCTL_RAWMIDI_PREFER_SUBDEVICE _IOW('U', 0x42, int)
926 #define SNDRV_CTL_IOCTL_POWER _IOWR('U', 0xd0, int)
927 #define SNDRV_CTL_IOCTL_POWER_STATE _IOR('U', 0xd1, int)
928 
929 /*
930  * Read interface.
931  */
932 
933 enum sndrv_ctl_event_type {
934  SNDRV_CTL_EVENT_ELEM = 0,
935  SNDRV_CTL_EVENT_LAST = SNDRV_CTL_EVENT_ELEM,
936 };
937 
938 #define SNDRV_CTL_EVENT_MASK_VALUE (1<<0) /* element value was changed */
939 #define SNDRV_CTL_EVENT_MASK_INFO (1<<1) /* element info was changed */
940 #define SNDRV_CTL_EVENT_MASK_ADD (1<<2) /* element was added */
941 #define SNDRV_CTL_EVENT_MASK_TLV (1<<3) /* element TLV tree was changed */
942 #define SNDRV_CTL_EVENT_MASK_REMOVE (~0U) /* element was removed */
943 
944 struct snd_ctl_event {
945  int type; /* event type - SNDRV_CTL_EVENT_* */
946  union {
947  struct {
948  unsigned int mask;
949  struct snd_ctl_elem_id id;
950  } elem;
951  unsigned char data8[60];
952  } data;
953 };
954 
955 /*
956  * Control names
957  */
958 
959 #define SNDRV_CTL_NAME_NONE ""
960 #define SNDRV_CTL_NAME_PLAYBACK "Playback "
961 #define SNDRV_CTL_NAME_CAPTURE "Capture "
962 
963 #define SNDRV_CTL_NAME_IEC958_NONE ""
964 #define SNDRV_CTL_NAME_IEC958_SWITCH "Switch"
965 #define SNDRV_CTL_NAME_IEC958_VOLUME "Volume"
966 #define SNDRV_CTL_NAME_IEC958_DEFAULT "Default"
967 #define SNDRV_CTL_NAME_IEC958_MASK "Mask"
968 #define SNDRV_CTL_NAME_IEC958_CON_MASK "Con Mask"
969 #define SNDRV_CTL_NAME_IEC958_PRO_MASK "Pro Mask"
970 #define SNDRV_CTL_NAME_IEC958_PCM_STREAM "PCM Stream"
971 #define SNDRV_CTL_NAME_IEC958(expl,direction,what) "IEC958 " expl SNDRV_CTL_NAME_##direction SNDRV_CTL_NAME_IEC958_##what
972 
973 #endif /* __SOUND_ASOUND_H */
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