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TOMOYO Linux Cross Reference
Linux/include/uapi/sound/asound.h

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  1 /*
  2  *  Advanced Linux Sound Architecture - ALSA - Driver
  3  *  Copyright (c) 1994-2003 by Jaroslav Kysela <perex@perex.cz>,
  4  *                             Abramo Bagnara <abramo@alsa-project.org>
  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 _UAPI__SOUND_ASOUND_H
 24 #define _UAPI__SOUND_ASOUND_H
 25 
 26 #include <linux/types.h>
 27 
 28 #ifndef __KERNEL__
 29 #include <stdlib.h>
 30 #endif
 31 
 32 /*
 33  *  protocol version
 34  */
 35 
 36 #define SNDRV_PROTOCOL_VERSION(major, minor, subminor) (((major)<<16)|((minor)<<8)|(subminor))
 37 #define SNDRV_PROTOCOL_MAJOR(version) (((version)>>16)&0xffff)
 38 #define SNDRV_PROTOCOL_MINOR(version) (((version)>>8)&0xff)
 39 #define SNDRV_PROTOCOL_MICRO(version) ((version)&0xff)
 40 #define SNDRV_PROTOCOL_INCOMPATIBLE(kversion, uversion) \
 41         (SNDRV_PROTOCOL_MAJOR(kversion) != SNDRV_PROTOCOL_MAJOR(uversion) || \
 42          (SNDRV_PROTOCOL_MAJOR(kversion) == SNDRV_PROTOCOL_MAJOR(uversion) && \
 43            SNDRV_PROTOCOL_MINOR(kversion) != SNDRV_PROTOCOL_MINOR(uversion)))
 44 
 45 /****************************************************************************
 46  *                                                                          *
 47  *        Digital audio interface                                           *
 48  *                                                                          *
 49  ****************************************************************************/
 50 
 51 struct snd_aes_iec958 {
 52         unsigned char status[24];       /* AES/IEC958 channel status bits */
 53         unsigned char subcode[147];     /* AES/IEC958 subcode bits */
 54         unsigned char pad;              /* nothing */
 55         unsigned char dig_subframe[4];  /* AES/IEC958 subframe bits */
 56 };
 57 
 58 /****************************************************************************
 59  *                                                                          *
 60  *        CEA-861 Audio InfoFrame. Used in HDMI and DisplayPort             *
 61  *                                                                          *
 62  ****************************************************************************/
 63 
 64 struct snd_cea_861_aud_if {
 65         unsigned char db1_ct_cc; /* coding type and channel count */
 66         unsigned char db2_sf_ss; /* sample frequency and size */
 67         unsigned char db3; /* not used, all zeros */
 68         unsigned char db4_ca; /* channel allocation code */
 69         unsigned char db5_dminh_lsv; /* downmix inhibit & level-shit values */
 70 };
 71 
 72 /****************************************************************************
 73  *                                                                          *
 74  *      Section for driver hardware dependent interface - /dev/snd/hw?      *
 75  *                                                                          *
 76  ****************************************************************************/
 77 
 78 #define SNDRV_HWDEP_VERSION             SNDRV_PROTOCOL_VERSION(1, 0, 1)
 79 
 80 enum {
 81         SNDRV_HWDEP_IFACE_OPL2 = 0,
 82         SNDRV_HWDEP_IFACE_OPL3,
 83         SNDRV_HWDEP_IFACE_OPL4,
 84         SNDRV_HWDEP_IFACE_SB16CSP,      /* Creative Signal Processor */
 85         SNDRV_HWDEP_IFACE_EMU10K1,      /* FX8010 processor in EMU10K1 chip */
 86         SNDRV_HWDEP_IFACE_YSS225,       /* Yamaha FX processor */
 87         SNDRV_HWDEP_IFACE_ICS2115,      /* Wavetable synth */
 88         SNDRV_HWDEP_IFACE_SSCAPE,       /* Ensoniq SoundScape ISA card (MC68EC000) */
 89         SNDRV_HWDEP_IFACE_VX,           /* Digigram VX cards */
 90         SNDRV_HWDEP_IFACE_MIXART,       /* Digigram miXart cards */
 91         SNDRV_HWDEP_IFACE_USX2Y,        /* Tascam US122, US224 & US428 usb */
 92         SNDRV_HWDEP_IFACE_EMUX_WAVETABLE, /* EmuX wavetable */  
 93         SNDRV_HWDEP_IFACE_BLUETOOTH,    /* Bluetooth audio */
 94         SNDRV_HWDEP_IFACE_USX2Y_PCM,    /* Tascam US122, US224 & US428 rawusb pcm */
 95         SNDRV_HWDEP_IFACE_PCXHR,        /* Digigram PCXHR */
 96         SNDRV_HWDEP_IFACE_SB_RC,        /* SB Extigy/Audigy2NX remote control */
 97         SNDRV_HWDEP_IFACE_HDA,          /* HD-audio */
 98         SNDRV_HWDEP_IFACE_USB_STREAM,   /* direct access to usb stream */
 99         SNDRV_HWDEP_IFACE_FW_DICE,      /* TC DICE FireWire device */
100         SNDRV_HWDEP_IFACE_FW_FIREWORKS, /* Echo Audio Fireworks based device */
101         SNDRV_HWDEP_IFACE_FW_BEBOB,     /* BridgeCo BeBoB based device */
102         SNDRV_HWDEP_IFACE_FW_OXFW,      /* Oxford OXFW970/971 based device */
103 
104         /* Don't forget to change the following: */
105         SNDRV_HWDEP_IFACE_LAST = SNDRV_HWDEP_IFACE_FW_OXFW
106 };
107 
108 struct snd_hwdep_info {
109         unsigned int device;            /* WR: device number */
110         int card;                       /* R: card number */
111         unsigned char id[64];           /* ID (user selectable) */
112         unsigned char name[80];         /* hwdep name */
113         int iface;                      /* hwdep interface */
114         unsigned char reserved[64];     /* reserved for future */
115 };
116 
117 /* generic DSP loader */
118 struct snd_hwdep_dsp_status {
119         unsigned int version;           /* R: driver-specific version */
120         unsigned char id[32];           /* R: driver-specific ID string */
121         unsigned int num_dsps;          /* R: number of DSP images to transfer */
122         unsigned int dsp_loaded;        /* R: bit flags indicating the loaded DSPs */
123         unsigned int chip_ready;        /* R: 1 = initialization finished */
124         unsigned char reserved[16];     /* reserved for future use */
125 };
126 
127 struct snd_hwdep_dsp_image {
128         unsigned int index;             /* W: DSP index */
129         unsigned char name[64];         /* W: ID (e.g. file name) */
130         unsigned char __user *image;    /* W: binary image */
131         size_t length;                  /* W: size of image in bytes */
132         unsigned long driver_data;      /* W: driver-specific data */
133 };
134 
135 #define SNDRV_HWDEP_IOCTL_PVERSION      _IOR ('H', 0x00, int)
136 #define SNDRV_HWDEP_IOCTL_INFO          _IOR ('H', 0x01, struct snd_hwdep_info)
137 #define SNDRV_HWDEP_IOCTL_DSP_STATUS    _IOR('H', 0x02, struct snd_hwdep_dsp_status)
138 #define SNDRV_HWDEP_IOCTL_DSP_LOAD      _IOW('H', 0x03, struct snd_hwdep_dsp_image)
139 
140 /*****************************************************************************
141  *                                                                           *
142  *             Digital Audio (PCM) interface - /dev/snd/pcm??                *
143  *                                                                           *
144  *****************************************************************************/
145 
146 #define SNDRV_PCM_VERSION               SNDRV_PROTOCOL_VERSION(2, 0, 13)
147 
148 typedef unsigned long snd_pcm_uframes_t;
149 typedef signed long snd_pcm_sframes_t;
150 
151 enum {
152         SNDRV_PCM_CLASS_GENERIC = 0,    /* standard mono or stereo device */
153         SNDRV_PCM_CLASS_MULTI,          /* multichannel device */
154         SNDRV_PCM_CLASS_MODEM,          /* software modem class */
155         SNDRV_PCM_CLASS_DIGITIZER,      /* digitizer class */
156         /* Don't forget to change the following: */
157         SNDRV_PCM_CLASS_LAST = SNDRV_PCM_CLASS_DIGITIZER,
158 };
159 
160 enum {
161         SNDRV_PCM_SUBCLASS_GENERIC_MIX = 0, /* mono or stereo subdevices are mixed together */
162         SNDRV_PCM_SUBCLASS_MULTI_MIX,   /* multichannel subdevices are mixed together */
163         /* Don't forget to change the following: */
164         SNDRV_PCM_SUBCLASS_LAST = SNDRV_PCM_SUBCLASS_MULTI_MIX,
165 };
166 
167 enum {
168         SNDRV_PCM_STREAM_PLAYBACK = 0,
169         SNDRV_PCM_STREAM_CAPTURE,
170         SNDRV_PCM_STREAM_LAST = SNDRV_PCM_STREAM_CAPTURE,
171 };
172 
173 typedef int __bitwise snd_pcm_access_t;
174 #define SNDRV_PCM_ACCESS_MMAP_INTERLEAVED       ((__force snd_pcm_access_t) 0) /* interleaved mmap */
175 #define SNDRV_PCM_ACCESS_MMAP_NONINTERLEAVED    ((__force snd_pcm_access_t) 1) /* noninterleaved mmap */
176 #define SNDRV_PCM_ACCESS_MMAP_COMPLEX           ((__force snd_pcm_access_t) 2) /* complex mmap */
177 #define SNDRV_PCM_ACCESS_RW_INTERLEAVED         ((__force snd_pcm_access_t) 3) /* readi/writei */
178 #define SNDRV_PCM_ACCESS_RW_NONINTERLEAVED      ((__force snd_pcm_access_t) 4) /* readn/writen */
179 #define SNDRV_PCM_ACCESS_LAST           SNDRV_PCM_ACCESS_RW_NONINTERLEAVED
180 
181 typedef int __bitwise snd_pcm_format_t;
182 #define SNDRV_PCM_FORMAT_S8     ((__force snd_pcm_format_t) 0)
183 #define SNDRV_PCM_FORMAT_U8     ((__force snd_pcm_format_t) 1)
184 #define SNDRV_PCM_FORMAT_S16_LE ((__force snd_pcm_format_t) 2)
185 #define SNDRV_PCM_FORMAT_S16_BE ((__force snd_pcm_format_t) 3)
186 #define SNDRV_PCM_FORMAT_U16_LE ((__force snd_pcm_format_t) 4)
187 #define SNDRV_PCM_FORMAT_U16_BE ((__force snd_pcm_format_t) 5)
188 #define SNDRV_PCM_FORMAT_S24_LE ((__force snd_pcm_format_t) 6) /* low three bytes */
189 #define SNDRV_PCM_FORMAT_S24_BE ((__force snd_pcm_format_t) 7) /* low three bytes */
190 #define SNDRV_PCM_FORMAT_U24_LE ((__force snd_pcm_format_t) 8) /* low three bytes */
191 #define SNDRV_PCM_FORMAT_U24_BE ((__force snd_pcm_format_t) 9) /* low three bytes */
192 #define SNDRV_PCM_FORMAT_S32_LE ((__force snd_pcm_format_t) 10)
193 #define SNDRV_PCM_FORMAT_S32_BE ((__force snd_pcm_format_t) 11)
194 #define SNDRV_PCM_FORMAT_U32_LE ((__force snd_pcm_format_t) 12)
195 #define SNDRV_PCM_FORMAT_U32_BE ((__force snd_pcm_format_t) 13)
196 #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 */
197 #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 */
198 #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 */
199 #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 */
200 #define SNDRV_PCM_FORMAT_IEC958_SUBFRAME_LE ((__force snd_pcm_format_t) 18) /* IEC-958 subframe, Little Endian */
201 #define SNDRV_PCM_FORMAT_IEC958_SUBFRAME_BE ((__force snd_pcm_format_t) 19) /* IEC-958 subframe, Big Endian */
202 #define SNDRV_PCM_FORMAT_MU_LAW         ((__force snd_pcm_format_t) 20)
203 #define SNDRV_PCM_FORMAT_A_LAW          ((__force snd_pcm_format_t) 21)
204 #define SNDRV_PCM_FORMAT_IMA_ADPCM      ((__force snd_pcm_format_t) 22)
205 #define SNDRV_PCM_FORMAT_MPEG           ((__force snd_pcm_format_t) 23)
206 #define SNDRV_PCM_FORMAT_GSM            ((__force snd_pcm_format_t) 24)
207 #define SNDRV_PCM_FORMAT_SPECIAL        ((__force snd_pcm_format_t) 31)
208 #define SNDRV_PCM_FORMAT_S24_3LE        ((__force snd_pcm_format_t) 32) /* in three bytes */
209 #define SNDRV_PCM_FORMAT_S24_3BE        ((__force snd_pcm_format_t) 33) /* in three bytes */
210 #define SNDRV_PCM_FORMAT_U24_3LE        ((__force snd_pcm_format_t) 34) /* in three bytes */
211 #define SNDRV_PCM_FORMAT_U24_3BE        ((__force snd_pcm_format_t) 35) /* in three bytes */
212 #define SNDRV_PCM_FORMAT_S20_3LE        ((__force snd_pcm_format_t) 36) /* in three bytes */
213 #define SNDRV_PCM_FORMAT_S20_3BE        ((__force snd_pcm_format_t) 37) /* in three bytes */
214 #define SNDRV_PCM_FORMAT_U20_3LE        ((__force snd_pcm_format_t) 38) /* in three bytes */
215 #define SNDRV_PCM_FORMAT_U20_3BE        ((__force snd_pcm_format_t) 39) /* in three bytes */
216 #define SNDRV_PCM_FORMAT_S18_3LE        ((__force snd_pcm_format_t) 40) /* in three bytes */
217 #define SNDRV_PCM_FORMAT_S18_3BE        ((__force snd_pcm_format_t) 41) /* in three bytes */
218 #define SNDRV_PCM_FORMAT_U18_3LE        ((__force snd_pcm_format_t) 42) /* in three bytes */
219 #define SNDRV_PCM_FORMAT_U18_3BE        ((__force snd_pcm_format_t) 43) /* in three bytes */
220 #define SNDRV_PCM_FORMAT_G723_24        ((__force snd_pcm_format_t) 44) /* 8 samples in 3 bytes */
221 #define SNDRV_PCM_FORMAT_G723_24_1B     ((__force snd_pcm_format_t) 45) /* 1 sample in 1 byte */
222 #define SNDRV_PCM_FORMAT_G723_40        ((__force snd_pcm_format_t) 46) /* 8 Samples in 5 bytes */
223 #define SNDRV_PCM_FORMAT_G723_40_1B     ((__force snd_pcm_format_t) 47) /* 1 sample in 1 byte */
224 #define SNDRV_PCM_FORMAT_DSD_U8         ((__force snd_pcm_format_t) 48) /* DSD, 1-byte samples DSD (x8) */
225 #define SNDRV_PCM_FORMAT_DSD_U16_LE     ((__force snd_pcm_format_t) 49) /* DSD, 2-byte samples DSD (x16), little endian */
226 #define SNDRV_PCM_FORMAT_DSD_U32_LE     ((__force snd_pcm_format_t) 50) /* DSD, 4-byte samples DSD (x32), little endian */
227 #define SNDRV_PCM_FORMAT_DSD_U16_BE     ((__force snd_pcm_format_t) 51) /* DSD, 2-byte samples DSD (x16), big endian */
228 #define SNDRV_PCM_FORMAT_DSD_U32_BE     ((__force snd_pcm_format_t) 52) /* DSD, 4-byte samples DSD (x32), big endian */
229 #define SNDRV_PCM_FORMAT_LAST           SNDRV_PCM_FORMAT_DSD_U32_BE
230 
231 #ifdef SNDRV_LITTLE_ENDIAN
232 #define SNDRV_PCM_FORMAT_S16            SNDRV_PCM_FORMAT_S16_LE
233 #define SNDRV_PCM_FORMAT_U16            SNDRV_PCM_FORMAT_U16_LE
234 #define SNDRV_PCM_FORMAT_S24            SNDRV_PCM_FORMAT_S24_LE
235 #define SNDRV_PCM_FORMAT_U24            SNDRV_PCM_FORMAT_U24_LE
236 #define SNDRV_PCM_FORMAT_S32            SNDRV_PCM_FORMAT_S32_LE
237 #define SNDRV_PCM_FORMAT_U32            SNDRV_PCM_FORMAT_U32_LE
238 #define SNDRV_PCM_FORMAT_FLOAT          SNDRV_PCM_FORMAT_FLOAT_LE
239 #define SNDRV_PCM_FORMAT_FLOAT64        SNDRV_PCM_FORMAT_FLOAT64_LE
240 #define SNDRV_PCM_FORMAT_IEC958_SUBFRAME SNDRV_PCM_FORMAT_IEC958_SUBFRAME_LE
241 #endif
242 #ifdef SNDRV_BIG_ENDIAN
243 #define SNDRV_PCM_FORMAT_S16            SNDRV_PCM_FORMAT_S16_BE
244 #define SNDRV_PCM_FORMAT_U16            SNDRV_PCM_FORMAT_U16_BE
245 #define SNDRV_PCM_FORMAT_S24            SNDRV_PCM_FORMAT_S24_BE
246 #define SNDRV_PCM_FORMAT_U24            SNDRV_PCM_FORMAT_U24_BE
247 #define SNDRV_PCM_FORMAT_S32            SNDRV_PCM_FORMAT_S32_BE
248 #define SNDRV_PCM_FORMAT_U32            SNDRV_PCM_FORMAT_U32_BE
249 #define SNDRV_PCM_FORMAT_FLOAT          SNDRV_PCM_FORMAT_FLOAT_BE
250 #define SNDRV_PCM_FORMAT_FLOAT64        SNDRV_PCM_FORMAT_FLOAT64_BE
251 #define SNDRV_PCM_FORMAT_IEC958_SUBFRAME SNDRV_PCM_FORMAT_IEC958_SUBFRAME_BE
252 #endif
253 
254 typedef int __bitwise snd_pcm_subformat_t;
255 #define SNDRV_PCM_SUBFORMAT_STD         ((__force snd_pcm_subformat_t) 0)
256 #define SNDRV_PCM_SUBFORMAT_LAST        SNDRV_PCM_SUBFORMAT_STD
257 
258 #define SNDRV_PCM_INFO_MMAP             0x00000001      /* hardware supports mmap */
259 #define SNDRV_PCM_INFO_MMAP_VALID       0x00000002      /* period data are valid during transfer */
260 #define SNDRV_PCM_INFO_DOUBLE           0x00000004      /* Double buffering needed for PCM start/stop */
261 #define SNDRV_PCM_INFO_BATCH            0x00000010      /* double buffering */
262 #define SNDRV_PCM_INFO_INTERLEAVED      0x00000100      /* channels are interleaved */
263 #define SNDRV_PCM_INFO_NONINTERLEAVED   0x00000200      /* channels are not interleaved */
264 #define SNDRV_PCM_INFO_COMPLEX          0x00000400      /* complex frame organization (mmap only) */
265 #define SNDRV_PCM_INFO_BLOCK_TRANSFER   0x00010000      /* hardware transfer block of samples */
266 #define SNDRV_PCM_INFO_OVERRANGE        0x00020000      /* hardware supports ADC (capture) overrange detection */
267 #define SNDRV_PCM_INFO_RESUME           0x00040000      /* hardware supports stream resume after suspend */
268 #define SNDRV_PCM_INFO_PAUSE            0x00080000      /* pause ioctl is supported */
269 #define SNDRV_PCM_INFO_HALF_DUPLEX      0x00100000      /* only half duplex */
270 #define SNDRV_PCM_INFO_JOINT_DUPLEX     0x00200000      /* playback and capture stream are somewhat correlated */
271 #define SNDRV_PCM_INFO_SYNC_START       0x00400000      /* pcm support some kind of sync go */
272 #define SNDRV_PCM_INFO_NO_PERIOD_WAKEUP 0x00800000      /* period wakeup can be disabled */
273 #define SNDRV_PCM_INFO_HAS_WALL_CLOCK   0x01000000      /* (Deprecated)has audio wall clock for audio/system time sync */
274 #define SNDRV_PCM_INFO_HAS_LINK_ATIME              0x01000000  /* report hardware link audio time, reset on startup */
275 #define SNDRV_PCM_INFO_HAS_LINK_ABSOLUTE_ATIME     0x02000000  /* report absolute hardware link audio time, not reset on startup */
276 #define SNDRV_PCM_INFO_HAS_LINK_ESTIMATED_ATIME    0x04000000  /* report estimated link audio time */
277 #define SNDRV_PCM_INFO_HAS_LINK_SYNCHRONIZED_ATIME 0x08000000  /* report synchronized audio/system time */
278 
279 #define SNDRV_PCM_INFO_DRAIN_TRIGGER    0x40000000              /* internal kernel flag - trigger in drain */
280 #define SNDRV_PCM_INFO_FIFO_IN_FRAMES   0x80000000      /* internal kernel flag - FIFO size is in frames */
281 
282 
283 
284 typedef int __bitwise snd_pcm_state_t;
285 #define SNDRV_PCM_STATE_OPEN            ((__force snd_pcm_state_t) 0) /* stream is open */
286 #define SNDRV_PCM_STATE_SETUP           ((__force snd_pcm_state_t) 1) /* stream has a setup */
287 #define SNDRV_PCM_STATE_PREPARED        ((__force snd_pcm_state_t) 2) /* stream is ready to start */
288 #define SNDRV_PCM_STATE_RUNNING         ((__force snd_pcm_state_t) 3) /* stream is running */
289 #define SNDRV_PCM_STATE_XRUN            ((__force snd_pcm_state_t) 4) /* stream reached an xrun */
290 #define SNDRV_PCM_STATE_DRAINING        ((__force snd_pcm_state_t) 5) /* stream is draining */
291 #define SNDRV_PCM_STATE_PAUSED          ((__force snd_pcm_state_t) 6) /* stream is paused */
292 #define SNDRV_PCM_STATE_SUSPENDED       ((__force snd_pcm_state_t) 7) /* hardware is suspended */
293 #define SNDRV_PCM_STATE_DISCONNECTED    ((__force snd_pcm_state_t) 8) /* hardware is disconnected */
294 #define SNDRV_PCM_STATE_LAST            SNDRV_PCM_STATE_DISCONNECTED
295 
296 enum {
297         SNDRV_PCM_MMAP_OFFSET_DATA = 0x00000000,
298         SNDRV_PCM_MMAP_OFFSET_STATUS = 0x80000000,
299         SNDRV_PCM_MMAP_OFFSET_CONTROL = 0x81000000,
300 };
301 
302 union snd_pcm_sync_id {
303         unsigned char id[16];
304         unsigned short id16[8];
305         unsigned int id32[4];
306 };
307 
308 struct snd_pcm_info {
309         unsigned int device;            /* RO/WR (control): device number */
310         unsigned int subdevice;         /* RO/WR (control): subdevice number */
311         int stream;                     /* RO/WR (control): stream direction */
312         int card;                       /* R: card number */
313         unsigned char id[64];           /* ID (user selectable) */
314         unsigned char name[80];         /* name of this device */
315         unsigned char subname[32];      /* subdevice name */
316         int dev_class;                  /* SNDRV_PCM_CLASS_* */
317         int dev_subclass;               /* SNDRV_PCM_SUBCLASS_* */
318         unsigned int subdevices_count;
319         unsigned int subdevices_avail;
320         union snd_pcm_sync_id sync;     /* hardware synchronization ID */
321         unsigned char reserved[64];     /* reserved for future... */
322 };
323 
324 typedef int snd_pcm_hw_param_t;
325 #define SNDRV_PCM_HW_PARAM_ACCESS       0       /* Access type */
326 #define SNDRV_PCM_HW_PARAM_FORMAT       1       /* Format */
327 #define SNDRV_PCM_HW_PARAM_SUBFORMAT    2       /* Subformat */
328 #define SNDRV_PCM_HW_PARAM_FIRST_MASK   SNDRV_PCM_HW_PARAM_ACCESS
329 #define SNDRV_PCM_HW_PARAM_LAST_MASK    SNDRV_PCM_HW_PARAM_SUBFORMAT
330 
331 #define SNDRV_PCM_HW_PARAM_SAMPLE_BITS  8       /* Bits per sample */
332 #define SNDRV_PCM_HW_PARAM_FRAME_BITS   9       /* Bits per frame */
333 #define SNDRV_PCM_HW_PARAM_CHANNELS     10      /* Channels */
334 #define SNDRV_PCM_HW_PARAM_RATE         11      /* Approx rate */
335 #define SNDRV_PCM_HW_PARAM_PERIOD_TIME  12      /* Approx distance between
336                                                  * interrupts in us
337                                                  */
338 #define SNDRV_PCM_HW_PARAM_PERIOD_SIZE  13      /* Approx frames between
339                                                  * interrupts
340                                                  */
341 #define SNDRV_PCM_HW_PARAM_PERIOD_BYTES 14      /* Approx bytes between
342                                                  * interrupts
343                                                  */
344 #define SNDRV_PCM_HW_PARAM_PERIODS      15      /* Approx interrupts per
345                                                  * buffer
346                                                  */
347 #define SNDRV_PCM_HW_PARAM_BUFFER_TIME  16      /* Approx duration of buffer
348                                                  * in us
349                                                  */
350 #define SNDRV_PCM_HW_PARAM_BUFFER_SIZE  17      /* Size of buffer in frames */
351 #define SNDRV_PCM_HW_PARAM_BUFFER_BYTES 18      /* Size of buffer in bytes */
352 #define SNDRV_PCM_HW_PARAM_TICK_TIME    19      /* Approx tick duration in us */
353 #define SNDRV_PCM_HW_PARAM_FIRST_INTERVAL       SNDRV_PCM_HW_PARAM_SAMPLE_BITS
354 #define SNDRV_PCM_HW_PARAM_LAST_INTERVAL        SNDRV_PCM_HW_PARAM_TICK_TIME
355 
356 #define SNDRV_PCM_HW_PARAMS_NORESAMPLE  (1<<0)  /* avoid rate resampling */
357 #define SNDRV_PCM_HW_PARAMS_EXPORT_BUFFER       (1<<1)  /* export buffer */
358 #define SNDRV_PCM_HW_PARAMS_NO_PERIOD_WAKEUP    (1<<2)  /* disable period wakeups */
359 
360 struct snd_interval {
361         unsigned int min, max;
362         unsigned int openmin:1,
363                      openmax:1,
364                      integer:1,
365                      empty:1;
366 };
367 
368 #define SNDRV_MASK_MAX  256
369 
370 struct snd_mask {
371         __u32 bits[(SNDRV_MASK_MAX+31)/32];
372 };
373 
374 struct snd_pcm_hw_params {
375         unsigned int flags;
376         struct snd_mask masks[SNDRV_PCM_HW_PARAM_LAST_MASK - 
377                                SNDRV_PCM_HW_PARAM_FIRST_MASK + 1];
378         struct snd_mask mres[5];        /* reserved masks */
379         struct snd_interval intervals[SNDRV_PCM_HW_PARAM_LAST_INTERVAL -
380                                         SNDRV_PCM_HW_PARAM_FIRST_INTERVAL + 1];
381         struct snd_interval ires[9];    /* reserved intervals */
382         unsigned int rmask;             /* W: requested masks */
383         unsigned int cmask;             /* R: changed masks */
384         unsigned int info;              /* R: Info flags for returned setup */
385         unsigned int msbits;            /* R: used most significant bits */
386         unsigned int rate_num;          /* R: rate numerator */
387         unsigned int rate_den;          /* R: rate denominator */
388         snd_pcm_uframes_t fifo_size;    /* R: chip FIFO size in frames */
389         unsigned char reserved[64];     /* reserved for future */
390 };
391 
392 enum {
393         SNDRV_PCM_TSTAMP_NONE = 0,
394         SNDRV_PCM_TSTAMP_ENABLE,
395         SNDRV_PCM_TSTAMP_LAST = SNDRV_PCM_TSTAMP_ENABLE,
396 };
397 
398 struct snd_pcm_sw_params {
399         int tstamp_mode;                        /* timestamp mode */
400         unsigned int period_step;
401         unsigned int sleep_min;                 /* min ticks to sleep */
402         snd_pcm_uframes_t avail_min;            /* min avail frames for wakeup */
403         snd_pcm_uframes_t xfer_align;           /* obsolete: xfer size need to be a multiple */
404         snd_pcm_uframes_t start_threshold;      /* min hw_avail frames for automatic start */
405         snd_pcm_uframes_t stop_threshold;       /* min avail frames for automatic stop */
406         snd_pcm_uframes_t silence_threshold;    /* min distance from noise for silence filling */
407         snd_pcm_uframes_t silence_size;         /* silence block size */
408         snd_pcm_uframes_t boundary;             /* pointers wrap point */
409         unsigned int proto;                     /* protocol version */
410         unsigned int tstamp_type;               /* timestamp type (req. proto >= 2.0.12) */
411         unsigned char reserved[56];             /* reserved for future */
412 };
413 
414 struct snd_pcm_channel_info {
415         unsigned int channel;
416         __kernel_off_t offset;          /* mmap offset */
417         unsigned int first;             /* offset to first sample in bits */
418         unsigned int step;              /* samples distance in bits */
419 };
420 
421 enum {
422         /*
423          *  first definition for backwards compatibility only,
424          *  maps to wallclock/link time for HDAudio playback and DEFAULT/DMA time for everything else
425          */
426         SNDRV_PCM_AUDIO_TSTAMP_TYPE_COMPAT = 0,
427 
428         /* timestamp definitions */
429         SNDRV_PCM_AUDIO_TSTAMP_TYPE_DEFAULT = 1,           /* DMA time, reported as per hw_ptr */
430         SNDRV_PCM_AUDIO_TSTAMP_TYPE_LINK = 2,              /* link time reported by sample or wallclock counter, reset on startup */
431         SNDRV_PCM_AUDIO_TSTAMP_TYPE_LINK_ABSOLUTE = 3,     /* link time reported by sample or wallclock counter, not reset on startup */
432         SNDRV_PCM_AUDIO_TSTAMP_TYPE_LINK_ESTIMATED = 4,    /* link time estimated indirectly */
433         SNDRV_PCM_AUDIO_TSTAMP_TYPE_LINK_SYNCHRONIZED = 5, /* link time synchronized with system time */
434         SNDRV_PCM_AUDIO_TSTAMP_TYPE_LAST = SNDRV_PCM_AUDIO_TSTAMP_TYPE_LINK_SYNCHRONIZED
435 };
436 
437 struct snd_pcm_status {
438         snd_pcm_state_t state;          /* stream state */
439         struct timespec trigger_tstamp; /* time when stream was started/stopped/paused */
440         struct timespec tstamp;         /* reference timestamp */
441         snd_pcm_uframes_t appl_ptr;     /* appl ptr */
442         snd_pcm_uframes_t hw_ptr;       /* hw ptr */
443         snd_pcm_sframes_t delay;        /* current delay in frames */
444         snd_pcm_uframes_t avail;        /* number of frames available */
445         snd_pcm_uframes_t avail_max;    /* max frames available on hw since last status */
446         snd_pcm_uframes_t overrange;    /* count of ADC (capture) overrange detections from last status */
447         snd_pcm_state_t suspended_state; /* suspended stream state */
448         __u32 audio_tstamp_data;         /* needed for 64-bit alignment, used for configs/report to/from userspace */
449         struct timespec audio_tstamp;   /* sample counter, wall clock, PHC or on-demand sync'ed */
450         struct timespec driver_tstamp;  /* useful in case reference system tstamp is reported with delay */
451         __u32 audio_tstamp_accuracy;    /* in ns units, only valid if indicated in audio_tstamp_data */
452         unsigned char reserved[52-2*sizeof(struct timespec)]; /* must be filled with zero */
453 };
454 
455 struct snd_pcm_mmap_status {
456         snd_pcm_state_t state;          /* RO: state - SNDRV_PCM_STATE_XXXX */
457         int pad1;                       /* Needed for 64 bit alignment */
458         snd_pcm_uframes_t hw_ptr;       /* RO: hw ptr (0...boundary-1) */
459         struct timespec tstamp;         /* Timestamp */
460         snd_pcm_state_t suspended_state; /* RO: suspended stream state */
461         struct timespec audio_tstamp;   /* from sample counter or wall clock */
462 };
463 
464 struct snd_pcm_mmap_control {
465         snd_pcm_uframes_t appl_ptr;     /* RW: appl ptr (0...boundary-1) */
466         snd_pcm_uframes_t avail_min;    /* RW: min available frames for wakeup */
467 };
468 
469 #define SNDRV_PCM_SYNC_PTR_HWSYNC       (1<<0)  /* execute hwsync */
470 #define SNDRV_PCM_SYNC_PTR_APPL         (1<<1)  /* get appl_ptr from driver (r/w op) */
471 #define SNDRV_PCM_SYNC_PTR_AVAIL_MIN    (1<<2)  /* get avail_min from driver */
472 
473 struct snd_pcm_sync_ptr {
474         unsigned int flags;
475         union {
476                 struct snd_pcm_mmap_status status;
477                 unsigned char reserved[64];
478         } s;
479         union {
480                 struct snd_pcm_mmap_control control;
481                 unsigned char reserved[64];
482         } c;
483 };
484 
485 struct snd_xferi {
486         snd_pcm_sframes_t result;
487         void __user *buf;
488         snd_pcm_uframes_t frames;
489 };
490 
491 struct snd_xfern {
492         snd_pcm_sframes_t result;
493         void __user * __user *bufs;
494         snd_pcm_uframes_t frames;
495 };
496 
497 enum {
498         SNDRV_PCM_TSTAMP_TYPE_GETTIMEOFDAY = 0, /* gettimeofday equivalent */
499         SNDRV_PCM_TSTAMP_TYPE_MONOTONIC,        /* posix_clock_monotonic equivalent */
500         SNDRV_PCM_TSTAMP_TYPE_MONOTONIC_RAW,    /* monotonic_raw (no NTP) */
501         SNDRV_PCM_TSTAMP_TYPE_LAST = SNDRV_PCM_TSTAMP_TYPE_MONOTONIC_RAW,
502 };
503 
504 /* channel positions */
505 enum {
506         SNDRV_CHMAP_UNKNOWN = 0,
507         SNDRV_CHMAP_NA,         /* N/A, silent */
508         SNDRV_CHMAP_MONO,       /* mono stream */
509         /* this follows the alsa-lib mixer channel value + 3 */
510         SNDRV_CHMAP_FL,         /* front left */
511         SNDRV_CHMAP_FR,         /* front right */
512         SNDRV_CHMAP_RL,         /* rear left */
513         SNDRV_CHMAP_RR,         /* rear right */
514         SNDRV_CHMAP_FC,         /* front center */
515         SNDRV_CHMAP_LFE,        /* LFE */
516         SNDRV_CHMAP_SL,         /* side left */
517         SNDRV_CHMAP_SR,         /* side right */
518         SNDRV_CHMAP_RC,         /* rear center */
519         /* new definitions */
520         SNDRV_CHMAP_FLC,        /* front left center */
521         SNDRV_CHMAP_FRC,        /* front right center */
522         SNDRV_CHMAP_RLC,        /* rear left center */
523         SNDRV_CHMAP_RRC,        /* rear right center */
524         SNDRV_CHMAP_FLW,        /* front left wide */
525         SNDRV_CHMAP_FRW,        /* front right wide */
526         SNDRV_CHMAP_FLH,        /* front left high */
527         SNDRV_CHMAP_FCH,        /* front center high */
528         SNDRV_CHMAP_FRH,        /* front right high */
529         SNDRV_CHMAP_TC,         /* top center */
530         SNDRV_CHMAP_TFL,        /* top front left */
531         SNDRV_CHMAP_TFR,        /* top front right */
532         SNDRV_CHMAP_TFC,        /* top front center */
533         SNDRV_CHMAP_TRL,        /* top rear left */
534         SNDRV_CHMAP_TRR,        /* top rear right */
535         SNDRV_CHMAP_TRC,        /* top rear center */
536         /* new definitions for UAC2 */
537         SNDRV_CHMAP_TFLC,       /* top front left center */
538         SNDRV_CHMAP_TFRC,       /* top front right center */
539         SNDRV_CHMAP_TSL,        /* top side left */
540         SNDRV_CHMAP_TSR,        /* top side right */
541         SNDRV_CHMAP_LLFE,       /* left LFE */
542         SNDRV_CHMAP_RLFE,       /* right LFE */
543         SNDRV_CHMAP_BC,         /* bottom center */
544         SNDRV_CHMAP_BLC,        /* bottom left center */
545         SNDRV_CHMAP_BRC,        /* bottom right center */
546         SNDRV_CHMAP_LAST = SNDRV_CHMAP_BRC,
547 };
548 
549 #define SNDRV_CHMAP_POSITION_MASK       0xffff
550 #define SNDRV_CHMAP_PHASE_INVERSE       (0x01 << 16)
551 #define SNDRV_CHMAP_DRIVER_SPEC         (0x02 << 16)
552 
553 #define SNDRV_PCM_IOCTL_PVERSION        _IOR('A', 0x00, int)
554 #define SNDRV_PCM_IOCTL_INFO            _IOR('A', 0x01, struct snd_pcm_info)
555 #define SNDRV_PCM_IOCTL_TSTAMP          _IOW('A', 0x02, int)
556 #define SNDRV_PCM_IOCTL_TTSTAMP         _IOW('A', 0x03, int)
557 #define SNDRV_PCM_IOCTL_HW_REFINE       _IOWR('A', 0x10, struct snd_pcm_hw_params)
558 #define SNDRV_PCM_IOCTL_HW_PARAMS       _IOWR('A', 0x11, struct snd_pcm_hw_params)
559 #define SNDRV_PCM_IOCTL_HW_FREE         _IO('A', 0x12)
560 #define SNDRV_PCM_IOCTL_SW_PARAMS       _IOWR('A', 0x13, struct snd_pcm_sw_params)
561 #define SNDRV_PCM_IOCTL_STATUS          _IOR('A', 0x20, struct snd_pcm_status)
562 #define SNDRV_PCM_IOCTL_DELAY           _IOR('A', 0x21, snd_pcm_sframes_t)
563 #define SNDRV_PCM_IOCTL_HWSYNC          _IO('A', 0x22)
564 #define SNDRV_PCM_IOCTL_SYNC_PTR        _IOWR('A', 0x23, struct snd_pcm_sync_ptr)
565 #define SNDRV_PCM_IOCTL_STATUS_EXT      _IOWR('A', 0x24, struct snd_pcm_status)
566 #define SNDRV_PCM_IOCTL_CHANNEL_INFO    _IOR('A', 0x32, struct snd_pcm_channel_info)
567 #define SNDRV_PCM_IOCTL_PREPARE         _IO('A', 0x40)
568 #define SNDRV_PCM_IOCTL_RESET           _IO('A', 0x41)
569 #define SNDRV_PCM_IOCTL_START           _IO('A', 0x42)
570 #define SNDRV_PCM_IOCTL_DROP            _IO('A', 0x43)
571 #define SNDRV_PCM_IOCTL_DRAIN           _IO('A', 0x44)
572 #define SNDRV_PCM_IOCTL_PAUSE           _IOW('A', 0x45, int)
573 #define SNDRV_PCM_IOCTL_REWIND          _IOW('A', 0x46, snd_pcm_uframes_t)
574 #define SNDRV_PCM_IOCTL_RESUME          _IO('A', 0x47)
575 #define SNDRV_PCM_IOCTL_XRUN            _IO('A', 0x48)
576 #define SNDRV_PCM_IOCTL_FORWARD         _IOW('A', 0x49, snd_pcm_uframes_t)
577 #define SNDRV_PCM_IOCTL_WRITEI_FRAMES   _IOW('A', 0x50, struct snd_xferi)
578 #define SNDRV_PCM_IOCTL_READI_FRAMES    _IOR('A', 0x51, struct snd_xferi)
579 #define SNDRV_PCM_IOCTL_WRITEN_FRAMES   _IOW('A', 0x52, struct snd_xfern)
580 #define SNDRV_PCM_IOCTL_READN_FRAMES    _IOR('A', 0x53, struct snd_xfern)
581 #define SNDRV_PCM_IOCTL_LINK            _IOW('A', 0x60, int)
582 #define SNDRV_PCM_IOCTL_UNLINK          _IO('A', 0x61)
583 
584 /*****************************************************************************
585  *                                                                           *
586  *                            MIDI v1.0 interface                            *
587  *                                                                           *
588  *****************************************************************************/
589 
590 /*
591  *  Raw MIDI section - /dev/snd/midi??
592  */
593 
594 #define SNDRV_RAWMIDI_VERSION           SNDRV_PROTOCOL_VERSION(2, 0, 0)
595 
596 enum {
597         SNDRV_RAWMIDI_STREAM_OUTPUT = 0,
598         SNDRV_RAWMIDI_STREAM_INPUT,
599         SNDRV_RAWMIDI_STREAM_LAST = SNDRV_RAWMIDI_STREAM_INPUT,
600 };
601 
602 #define SNDRV_RAWMIDI_INFO_OUTPUT               0x00000001
603 #define SNDRV_RAWMIDI_INFO_INPUT                0x00000002
604 #define SNDRV_RAWMIDI_INFO_DUPLEX               0x00000004
605 
606 struct snd_rawmidi_info {
607         unsigned int device;            /* RO/WR (control): device number */
608         unsigned int subdevice;         /* RO/WR (control): subdevice number */
609         int stream;                     /* WR: stream */
610         int card;                       /* R: card number */
611         unsigned int flags;             /* SNDRV_RAWMIDI_INFO_XXXX */
612         unsigned char id[64];           /* ID (user selectable) */
613         unsigned char name[80];         /* name of device */
614         unsigned char subname[32];      /* name of active or selected subdevice */
615         unsigned int subdevices_count;
616         unsigned int subdevices_avail;
617         unsigned char reserved[64];     /* reserved for future use */
618 };
619 
620 struct snd_rawmidi_params {
621         int stream;
622         size_t buffer_size;             /* queue size in bytes */
623         size_t avail_min;               /* minimum avail bytes for wakeup */
624         unsigned int no_active_sensing: 1; /* do not send active sensing byte in close() */
625         unsigned char reserved[16];     /* reserved for future use */
626 };
627 
628 struct snd_rawmidi_status {
629         int stream;
630         struct timespec tstamp;         /* Timestamp */
631         size_t avail;                   /* available bytes */
632         size_t xruns;                   /* count of overruns since last status (in bytes) */
633         unsigned char reserved[16];     /* reserved for future use */
634 };
635 
636 #define SNDRV_RAWMIDI_IOCTL_PVERSION    _IOR('W', 0x00, int)
637 #define SNDRV_RAWMIDI_IOCTL_INFO        _IOR('W', 0x01, struct snd_rawmidi_info)
638 #define SNDRV_RAWMIDI_IOCTL_PARAMS      _IOWR('W', 0x10, struct snd_rawmidi_params)
639 #define SNDRV_RAWMIDI_IOCTL_STATUS      _IOWR('W', 0x20, struct snd_rawmidi_status)
640 #define SNDRV_RAWMIDI_IOCTL_DROP        _IOW('W', 0x30, int)
641 #define SNDRV_RAWMIDI_IOCTL_DRAIN       _IOW('W', 0x31, int)
642 
643 /*
644  *  Timer section - /dev/snd/timer
645  */
646 
647 #define SNDRV_TIMER_VERSION             SNDRV_PROTOCOL_VERSION(2, 0, 6)
648 
649 enum {
650         SNDRV_TIMER_CLASS_NONE = -1,
651         SNDRV_TIMER_CLASS_SLAVE = 0,
652         SNDRV_TIMER_CLASS_GLOBAL,
653         SNDRV_TIMER_CLASS_CARD,
654         SNDRV_TIMER_CLASS_PCM,
655         SNDRV_TIMER_CLASS_LAST = SNDRV_TIMER_CLASS_PCM,
656 };
657 
658 /* slave timer classes */
659 enum {
660         SNDRV_TIMER_SCLASS_NONE = 0,
661         SNDRV_TIMER_SCLASS_APPLICATION,
662         SNDRV_TIMER_SCLASS_SEQUENCER,           /* alias */
663         SNDRV_TIMER_SCLASS_OSS_SEQUENCER,       /* alias */
664         SNDRV_TIMER_SCLASS_LAST = SNDRV_TIMER_SCLASS_OSS_SEQUENCER,
665 };
666 
667 /* global timers (device member) */
668 #define SNDRV_TIMER_GLOBAL_SYSTEM       0
669 #define SNDRV_TIMER_GLOBAL_RTC          1
670 #define SNDRV_TIMER_GLOBAL_HPET         2
671 #define SNDRV_TIMER_GLOBAL_HRTIMER      3
672 
673 /* info flags */
674 #define SNDRV_TIMER_FLG_SLAVE           (1<<0)  /* cannot be controlled */
675 
676 struct snd_timer_id {
677         int dev_class;
678         int dev_sclass;
679         int card;
680         int device;
681         int subdevice;
682 };
683 
684 struct snd_timer_ginfo {
685         struct snd_timer_id tid;        /* requested timer ID */
686         unsigned int flags;             /* timer flags - SNDRV_TIMER_FLG_* */
687         int card;                       /* card number */
688         unsigned char id[64];           /* timer identification */
689         unsigned char name[80];         /* timer name */
690         unsigned long reserved0;        /* reserved for future use */
691         unsigned long resolution;       /* average period resolution in ns */
692         unsigned long resolution_min;   /* minimal period resolution in ns */
693         unsigned long resolution_max;   /* maximal period resolution in ns */
694         unsigned int clients;           /* active timer clients */
695         unsigned char reserved[32];
696 };
697 
698 struct snd_timer_gparams {
699         struct snd_timer_id tid;        /* requested timer ID */
700         unsigned long period_num;       /* requested precise period duration (in seconds) - numerator */
701         unsigned long period_den;       /* requested precise period duration (in seconds) - denominator */
702         unsigned char reserved[32];
703 };
704 
705 struct snd_timer_gstatus {
706         struct snd_timer_id tid;        /* requested timer ID */
707         unsigned long resolution;       /* current period resolution in ns */
708         unsigned long resolution_num;   /* precise current period resolution (in seconds) - numerator */
709         unsigned long resolution_den;   /* precise current period resolution (in seconds) - denominator */
710         unsigned char reserved[32];
711 };
712 
713 struct snd_timer_select {
714         struct snd_timer_id id; /* bind to timer ID */
715         unsigned char reserved[32];     /* reserved */
716 };
717 
718 struct snd_timer_info {
719         unsigned int flags;             /* timer flags - SNDRV_TIMER_FLG_* */
720         int card;                       /* card number */
721         unsigned char id[64];           /* timer identificator */
722         unsigned char name[80];         /* timer name */
723         unsigned long reserved0;        /* reserved for future use */
724         unsigned long resolution;       /* average period resolution in ns */
725         unsigned char reserved[64];     /* reserved */
726 };
727 
728 #define SNDRV_TIMER_PSFLG_AUTO          (1<<0)  /* auto start, otherwise one-shot */
729 #define SNDRV_TIMER_PSFLG_EXCLUSIVE     (1<<1)  /* exclusive use, precise start/stop/pause/continue */
730 #define SNDRV_TIMER_PSFLG_EARLY_EVENT   (1<<2)  /* write early event to the poll queue */
731 
732 struct snd_timer_params {
733         unsigned int flags;             /* flags - SNDRV_MIXER_PSFLG_* */
734         unsigned int ticks;             /* requested resolution in ticks */
735         unsigned int queue_size;        /* total size of queue (32-1024) */
736         unsigned int reserved0;         /* reserved, was: failure locations */
737         unsigned int filter;            /* event filter (bitmask of SNDRV_TIMER_EVENT_*) */
738         unsigned char reserved[60];     /* reserved */
739 };
740 
741 struct snd_timer_status {
742         struct timespec tstamp;         /* Timestamp - last update */
743         unsigned int resolution;        /* current period resolution in ns */
744         unsigned int lost;              /* counter of master tick lost */
745         unsigned int overrun;           /* count of read queue overruns */
746         unsigned int queue;             /* used queue size */
747         unsigned char reserved[64];     /* reserved */
748 };
749 
750 #define SNDRV_TIMER_IOCTL_PVERSION      _IOR('T', 0x00, int)
751 #define SNDRV_TIMER_IOCTL_NEXT_DEVICE   _IOWR('T', 0x01, struct snd_timer_id)
752 #define SNDRV_TIMER_IOCTL_TREAD         _IOW('T', 0x02, int)
753 #define SNDRV_TIMER_IOCTL_GINFO         _IOWR('T', 0x03, struct snd_timer_ginfo)
754 #define SNDRV_TIMER_IOCTL_GPARAMS       _IOW('T', 0x04, struct snd_timer_gparams)
755 #define SNDRV_TIMER_IOCTL_GSTATUS       _IOWR('T', 0x05, struct snd_timer_gstatus)
756 #define SNDRV_TIMER_IOCTL_SELECT        _IOW('T', 0x10, struct snd_timer_select)
757 #define SNDRV_TIMER_IOCTL_INFO          _IOR('T', 0x11, struct snd_timer_info)
758 #define SNDRV_TIMER_IOCTL_PARAMS        _IOW('T', 0x12, struct snd_timer_params)
759 #define SNDRV_TIMER_IOCTL_STATUS        _IOR('T', 0x14, struct snd_timer_status)
760 /* The following four ioctls are changed since 1.0.9 due to confliction */
761 #define SNDRV_TIMER_IOCTL_START         _IO('T', 0xa0)
762 #define SNDRV_TIMER_IOCTL_STOP          _IO('T', 0xa1)
763 #define SNDRV_TIMER_IOCTL_CONTINUE      _IO('T', 0xa2)
764 #define SNDRV_TIMER_IOCTL_PAUSE         _IO('T', 0xa3)
765 
766 struct snd_timer_read {
767         unsigned int resolution;
768         unsigned int ticks;
769 };
770 
771 enum {
772         SNDRV_TIMER_EVENT_RESOLUTION = 0,       /* val = resolution in ns */
773         SNDRV_TIMER_EVENT_TICK,                 /* val = ticks */
774         SNDRV_TIMER_EVENT_START,                /* val = resolution in ns */
775         SNDRV_TIMER_EVENT_STOP,                 /* val = 0 */
776         SNDRV_TIMER_EVENT_CONTINUE,             /* val = resolution in ns */
777         SNDRV_TIMER_EVENT_PAUSE,                /* val = 0 */
778         SNDRV_TIMER_EVENT_EARLY,                /* val = 0, early event */
779         SNDRV_TIMER_EVENT_SUSPEND,              /* val = 0 */
780         SNDRV_TIMER_EVENT_RESUME,               /* val = resolution in ns */
781         /* master timer events for slave timer instances */
782         SNDRV_TIMER_EVENT_MSTART = SNDRV_TIMER_EVENT_START + 10,
783         SNDRV_TIMER_EVENT_MSTOP = SNDRV_TIMER_EVENT_STOP + 10,
784         SNDRV_TIMER_EVENT_MCONTINUE = SNDRV_TIMER_EVENT_CONTINUE + 10,
785         SNDRV_TIMER_EVENT_MPAUSE = SNDRV_TIMER_EVENT_PAUSE + 10,
786         SNDRV_TIMER_EVENT_MSUSPEND = SNDRV_TIMER_EVENT_SUSPEND + 10,
787         SNDRV_TIMER_EVENT_MRESUME = SNDRV_TIMER_EVENT_RESUME + 10,
788 };
789 
790 struct snd_timer_tread {
791         int event;
792         struct timespec tstamp;
793         unsigned int val;
794 };
795 
796 /****************************************************************************
797  *                                                                          *
798  *        Section for driver control interface - /dev/snd/control?          *
799  *                                                                          *
800  ****************************************************************************/
801 
802 #define SNDRV_CTL_VERSION               SNDRV_PROTOCOL_VERSION(2, 0, 7)
803 
804 struct snd_ctl_card_info {
805         int card;                       /* card number */
806         int pad;                        /* reserved for future (was type) */
807         unsigned char id[16];           /* ID of card (user selectable) */
808         unsigned char driver[16];       /* Driver name */
809         unsigned char name[32];         /* Short name of soundcard */
810         unsigned char longname[80];     /* name + info text about soundcard */
811         unsigned char reserved_[16];    /* reserved for future (was ID of mixer) */
812         unsigned char mixername[80];    /* visual mixer identification */
813         unsigned char components[128];  /* card components / fine identification, delimited with one space (AC97 etc..) */
814 };
815 
816 typedef int __bitwise snd_ctl_elem_type_t;
817 #define SNDRV_CTL_ELEM_TYPE_NONE        ((__force snd_ctl_elem_type_t) 0) /* invalid */
818 #define SNDRV_CTL_ELEM_TYPE_BOOLEAN     ((__force snd_ctl_elem_type_t) 1) /* boolean type */
819 #define SNDRV_CTL_ELEM_TYPE_INTEGER     ((__force snd_ctl_elem_type_t) 2) /* integer type */
820 #define SNDRV_CTL_ELEM_TYPE_ENUMERATED  ((__force snd_ctl_elem_type_t) 3) /* enumerated type */
821 #define SNDRV_CTL_ELEM_TYPE_BYTES       ((__force snd_ctl_elem_type_t) 4) /* byte array */
822 #define SNDRV_CTL_ELEM_TYPE_IEC958      ((__force snd_ctl_elem_type_t) 5) /* IEC958 (S/PDIF) setup */
823 #define SNDRV_CTL_ELEM_TYPE_INTEGER64   ((__force snd_ctl_elem_type_t) 6) /* 64-bit integer type */
824 #define SNDRV_CTL_ELEM_TYPE_LAST        SNDRV_CTL_ELEM_TYPE_INTEGER64
825 
826 typedef int __bitwise snd_ctl_elem_iface_t;
827 #define SNDRV_CTL_ELEM_IFACE_CARD       ((__force snd_ctl_elem_iface_t) 0) /* global control */
828 #define SNDRV_CTL_ELEM_IFACE_HWDEP      ((__force snd_ctl_elem_iface_t) 1) /* hardware dependent device */
829 #define SNDRV_CTL_ELEM_IFACE_MIXER      ((__force snd_ctl_elem_iface_t) 2) /* virtual mixer device */
830 #define SNDRV_CTL_ELEM_IFACE_PCM        ((__force snd_ctl_elem_iface_t) 3) /* PCM device */
831 #define SNDRV_CTL_ELEM_IFACE_RAWMIDI    ((__force snd_ctl_elem_iface_t) 4) /* RawMidi device */
832 #define SNDRV_CTL_ELEM_IFACE_TIMER      ((__force snd_ctl_elem_iface_t) 5) /* timer device */
833 #define SNDRV_CTL_ELEM_IFACE_SEQUENCER  ((__force snd_ctl_elem_iface_t) 6) /* sequencer client */
834 #define SNDRV_CTL_ELEM_IFACE_LAST       SNDRV_CTL_ELEM_IFACE_SEQUENCER
835 
836 #define SNDRV_CTL_ELEM_ACCESS_READ              (1<<0)
837 #define SNDRV_CTL_ELEM_ACCESS_WRITE             (1<<1)
838 #define SNDRV_CTL_ELEM_ACCESS_READWRITE         (SNDRV_CTL_ELEM_ACCESS_READ|SNDRV_CTL_ELEM_ACCESS_WRITE)
839 #define SNDRV_CTL_ELEM_ACCESS_VOLATILE          (1<<2)  /* control value may be changed without a notification */
840 #define SNDRV_CTL_ELEM_ACCESS_TIMESTAMP         (1<<3)  /* when was control changed */
841 #define SNDRV_CTL_ELEM_ACCESS_TLV_READ          (1<<4)  /* TLV read is possible */
842 #define SNDRV_CTL_ELEM_ACCESS_TLV_WRITE         (1<<5)  /* TLV write is possible */
843 #define SNDRV_CTL_ELEM_ACCESS_TLV_READWRITE     (SNDRV_CTL_ELEM_ACCESS_TLV_READ|SNDRV_CTL_ELEM_ACCESS_TLV_WRITE)
844 #define SNDRV_CTL_ELEM_ACCESS_TLV_COMMAND       (1<<6)  /* TLV command is possible */
845 #define SNDRV_CTL_ELEM_ACCESS_INACTIVE          (1<<8)  /* control does actually nothing, but may be updated */
846 #define SNDRV_CTL_ELEM_ACCESS_LOCK              (1<<9)  /* write lock */
847 #define SNDRV_CTL_ELEM_ACCESS_OWNER             (1<<10) /* write lock owner */
848 #define SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK      (1<<28) /* kernel use a TLV callback */ 
849 #define SNDRV_CTL_ELEM_ACCESS_USER              (1<<29) /* user space element */
850 /* bits 30 and 31 are obsoleted (for indirect access) */
851 
852 /* for further details see the ACPI and PCI power management specification */
853 #define SNDRV_CTL_POWER_D0              0x0000  /* full On */
854 #define SNDRV_CTL_POWER_D1              0x0100  /* partial On */
855 #define SNDRV_CTL_POWER_D2              0x0200  /* partial On */
856 #define SNDRV_CTL_POWER_D3              0x0300  /* Off */
857 #define SNDRV_CTL_POWER_D3hot           (SNDRV_CTL_POWER_D3|0x0000)     /* Off, with power */
858 #define SNDRV_CTL_POWER_D3cold          (SNDRV_CTL_POWER_D3|0x0001)     /* Off, without power */
859 
860 #define SNDRV_CTL_ELEM_ID_NAME_MAXLEN   44
861 
862 struct snd_ctl_elem_id {
863         unsigned int numid;             /* numeric identifier, zero = invalid */
864         snd_ctl_elem_iface_t iface;     /* interface identifier */
865         unsigned int device;            /* device/client number */
866         unsigned int subdevice;         /* subdevice (substream) number */
867         unsigned char name[SNDRV_CTL_ELEM_ID_NAME_MAXLEN];              /* ASCII name of item */
868         unsigned int index;             /* index of item */
869 };
870 
871 struct snd_ctl_elem_list {
872         unsigned int offset;            /* W: first element ID to get */
873         unsigned int space;             /* W: count of element IDs to get */
874         unsigned int used;              /* R: count of element IDs set */
875         unsigned int count;             /* R: count of all elements */
876         struct snd_ctl_elem_id __user *pids; /* R: IDs */
877         unsigned char reserved[50];
878 };
879 
880 struct snd_ctl_elem_info {
881         struct snd_ctl_elem_id id;      /* W: element ID */
882         snd_ctl_elem_type_t type;       /* R: value type - SNDRV_CTL_ELEM_TYPE_* */
883         unsigned int access;            /* R: value access (bitmask) - SNDRV_CTL_ELEM_ACCESS_* */
884         unsigned int count;             /* count of values */
885         __kernel_pid_t owner;           /* owner's PID of this control */
886         union {
887                 struct {
888                         long min;               /* R: minimum value */
889                         long max;               /* R: maximum value */
890                         long step;              /* R: step (0 variable) */
891                 } integer;
892                 struct {
893                         long long min;          /* R: minimum value */
894                         long long max;          /* R: maximum value */
895                         long long step;         /* R: step (0 variable) */
896                 } integer64;
897                 struct {
898                         unsigned int items;     /* R: number of items */
899                         unsigned int item;      /* W: item number */
900                         char name[64];          /* R: value name */
901                         __u64 names_ptr;        /* W: names list (ELEM_ADD only) */
902                         unsigned int names_length;
903                 } enumerated;
904                 unsigned char reserved[128];
905         } value;
906         union {
907                 unsigned short d[4];            /* dimensions */
908                 unsigned short *d_ptr;          /* indirect - obsoleted */
909         } dimen;
910         unsigned char reserved[64-4*sizeof(unsigned short)];
911 };
912 
913 struct snd_ctl_elem_value {
914         struct snd_ctl_elem_id id;      /* W: element ID */
915         unsigned int indirect: 1;       /* W: indirect access - obsoleted */
916         union {
917                 union {
918                         long value[128];
919                         long *value_ptr;        /* obsoleted */
920                 } integer;
921                 union {
922                         long long value[64];
923                         long long *value_ptr;   /* obsoleted */
924                 } integer64;
925                 union {
926                         unsigned int item[128];
927                         unsigned int *item_ptr; /* obsoleted */
928                 } enumerated;
929                 union {
930                         unsigned char data[512];
931                         unsigned char *data_ptr;        /* obsoleted */
932                 } bytes;
933                 struct snd_aes_iec958 iec958;
934         } value;                /* RO */
935         struct timespec tstamp;
936         unsigned char reserved[128-sizeof(struct timespec)];
937 };
938 
939 struct snd_ctl_tlv {
940         unsigned int numid;     /* control element numeric identification */
941         unsigned int length;    /* in bytes aligned to 4 */
942         unsigned int tlv[0];    /* first TLV */
943 };
944 
945 #define SNDRV_CTL_IOCTL_PVERSION        _IOR('U', 0x00, int)
946 #define SNDRV_CTL_IOCTL_CARD_INFO       _IOR('U', 0x01, struct snd_ctl_card_info)
947 #define SNDRV_CTL_IOCTL_ELEM_LIST       _IOWR('U', 0x10, struct snd_ctl_elem_list)
948 #define SNDRV_CTL_IOCTL_ELEM_INFO       _IOWR('U', 0x11, struct snd_ctl_elem_info)
949 #define SNDRV_CTL_IOCTL_ELEM_READ       _IOWR('U', 0x12, struct snd_ctl_elem_value)
950 #define SNDRV_CTL_IOCTL_ELEM_WRITE      _IOWR('U', 0x13, struct snd_ctl_elem_value)
951 #define SNDRV_CTL_IOCTL_ELEM_LOCK       _IOW('U', 0x14, struct snd_ctl_elem_id)
952 #define SNDRV_CTL_IOCTL_ELEM_UNLOCK     _IOW('U', 0x15, struct snd_ctl_elem_id)
953 #define SNDRV_CTL_IOCTL_SUBSCRIBE_EVENTS _IOWR('U', 0x16, int)
954 #define SNDRV_CTL_IOCTL_ELEM_ADD        _IOWR('U', 0x17, struct snd_ctl_elem_info)
955 #define SNDRV_CTL_IOCTL_ELEM_REPLACE    _IOWR('U', 0x18, struct snd_ctl_elem_info)
956 #define SNDRV_CTL_IOCTL_ELEM_REMOVE     _IOWR('U', 0x19, struct snd_ctl_elem_id)
957 #define SNDRV_CTL_IOCTL_TLV_READ        _IOWR('U', 0x1a, struct snd_ctl_tlv)
958 #define SNDRV_CTL_IOCTL_TLV_WRITE       _IOWR('U', 0x1b, struct snd_ctl_tlv)
959 #define SNDRV_CTL_IOCTL_TLV_COMMAND     _IOWR('U', 0x1c, struct snd_ctl_tlv)
960 #define SNDRV_CTL_IOCTL_HWDEP_NEXT_DEVICE _IOWR('U', 0x20, int)
961 #define SNDRV_CTL_IOCTL_HWDEP_INFO      _IOR('U', 0x21, struct snd_hwdep_info)
962 #define SNDRV_CTL_IOCTL_PCM_NEXT_DEVICE _IOR('U', 0x30, int)
963 #define SNDRV_CTL_IOCTL_PCM_INFO        _IOWR('U', 0x31, struct snd_pcm_info)
964 #define SNDRV_CTL_IOCTL_PCM_PREFER_SUBDEVICE _IOW('U', 0x32, int)
965 #define SNDRV_CTL_IOCTL_RAWMIDI_NEXT_DEVICE _IOWR('U', 0x40, int)
966 #define SNDRV_CTL_IOCTL_RAWMIDI_INFO    _IOWR('U', 0x41, struct snd_rawmidi_info)
967 #define SNDRV_CTL_IOCTL_RAWMIDI_PREFER_SUBDEVICE _IOW('U', 0x42, int)
968 #define SNDRV_CTL_IOCTL_POWER           _IOWR('U', 0xd0, int)
969 #define SNDRV_CTL_IOCTL_POWER_STATE     _IOR('U', 0xd1, int)
970 
971 /*
972  *  Read interface.
973  */
974 
975 enum sndrv_ctl_event_type {
976         SNDRV_CTL_EVENT_ELEM = 0,
977         SNDRV_CTL_EVENT_LAST = SNDRV_CTL_EVENT_ELEM,
978 };
979 
980 #define SNDRV_CTL_EVENT_MASK_VALUE      (1<<0)  /* element value was changed */
981 #define SNDRV_CTL_EVENT_MASK_INFO       (1<<1)  /* element info was changed */
982 #define SNDRV_CTL_EVENT_MASK_ADD        (1<<2)  /* element was added */
983 #define SNDRV_CTL_EVENT_MASK_TLV        (1<<3)  /* element TLV tree was changed */
984 #define SNDRV_CTL_EVENT_MASK_REMOVE     (~0U)   /* element was removed */
985 
986 struct snd_ctl_event {
987         int type;       /* event type - SNDRV_CTL_EVENT_* */
988         union {
989                 struct {
990                         unsigned int mask;
991                         struct snd_ctl_elem_id id;
992                 } elem;
993                 unsigned char data8[60];
994         } data;
995 };
996 
997 /*
998  *  Control names
999  */
1000 
1001 #define SNDRV_CTL_NAME_NONE                             ""
1002 #define SNDRV_CTL_NAME_PLAYBACK                         "Playback "
1003 #define SNDRV_CTL_NAME_CAPTURE                          "Capture "
1004 
1005 #define SNDRV_CTL_NAME_IEC958_NONE                      ""
1006 #define SNDRV_CTL_NAME_IEC958_SWITCH                    "Switch"
1007 #define SNDRV_CTL_NAME_IEC958_VOLUME                    "Volume"
1008 #define SNDRV_CTL_NAME_IEC958_DEFAULT                   "Default"
1009 #define SNDRV_CTL_NAME_IEC958_MASK                      "Mask"
1010 #define SNDRV_CTL_NAME_IEC958_CON_MASK                  "Con Mask"
1011 #define SNDRV_CTL_NAME_IEC958_PRO_MASK                  "Pro Mask"
1012 #define SNDRV_CTL_NAME_IEC958_PCM_STREAM                "PCM Stream"
1013 #define SNDRV_CTL_NAME_IEC958(expl,direction,what)      "IEC958 " expl SNDRV_CTL_NAME_##direction SNDRV_CTL_NAME_IEC958_##what
1014 
1015 #endif /* _UAPI__SOUND_ASOUND_H */
1016 

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