asound.h revision bbaf5e97337287479eb78dbc3822d9560bbfd2e2
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 __SOUND_ASOUND_H 24#define __SOUND_ASOUND_H 25 26#ifdef __KERNEL__ 27#include <linux/ioctl.h> 28#include <linux/types.h> 29#include <linux/time.h> 30#include <asm/byteorder.h> 31 32#ifdef __LITTLE_ENDIAN 33#define SNDRV_LITTLE_ENDIAN 34#else 35#ifdef __BIG_ENDIAN 36#define SNDRV_BIG_ENDIAN 37#else 38#error "Unsupported endian..." 39#endif 40#endif 41 42#endif /* __KERNEL__ **/ 43 44/* 45 * protocol version 46 */ 47 48#define SNDRV_PROTOCOL_VERSION(major, minor, subminor) (((major)<<16)|((minor)<<8)|(subminor)) 49#define SNDRV_PROTOCOL_MAJOR(version) (((version)>>16)&0xffff) 50#define SNDRV_PROTOCOL_MINOR(version) (((version)>>8)&0xff) 51#define SNDRV_PROTOCOL_MICRO(version) ((version)&0xff) 52#define SNDRV_PROTOCOL_INCOMPATIBLE(kversion, uversion) \ 53 (SNDRV_PROTOCOL_MAJOR(kversion) != SNDRV_PROTOCOL_MAJOR(uversion) || \ 54 (SNDRV_PROTOCOL_MAJOR(kversion) == SNDRV_PROTOCOL_MAJOR(uversion) && \ 55 SNDRV_PROTOCOL_MINOR(kversion) != SNDRV_PROTOCOL_MINOR(uversion))) 56 57/**************************************************************************** 58 * * 59 * Digital audio interface * 60 * * 61 ****************************************************************************/ 62 63struct snd_aes_iec958 { 64 unsigned char status[24]; /* AES/IEC958 channel status bits */ 65 unsigned char subcode[147]; /* AES/IEC958 subcode bits */ 66 unsigned char pad; /* nothing */ 67 unsigned char dig_subframe[4]; /* AES/IEC958 subframe bits */ 68}; 69 70/**************************************************************************** 71 * * 72 * Section for driver hardware dependent interface - /dev/snd/hw? * 73 * * 74 ****************************************************************************/ 75 76#define SNDRV_HWDEP_VERSION SNDRV_PROTOCOL_VERSION(1, 0, 1) 77 78enum { 79 SNDRV_HWDEP_IFACE_OPL2 = 0, 80 SNDRV_HWDEP_IFACE_OPL3, 81 SNDRV_HWDEP_IFACE_OPL4, 82 SNDRV_HWDEP_IFACE_SB16CSP, /* Creative Signal Processor */ 83 SNDRV_HWDEP_IFACE_EMU10K1, /* FX8010 processor in EMU10K1 chip */ 84 SNDRV_HWDEP_IFACE_YSS225, /* Yamaha FX processor */ 85 SNDRV_HWDEP_IFACE_ICS2115, /* Wavetable synth */ 86 SNDRV_HWDEP_IFACE_SSCAPE, /* Ensoniq SoundScape ISA card (MC68EC000) */ 87 SNDRV_HWDEP_IFACE_VX, /* Digigram VX cards */ 88 SNDRV_HWDEP_IFACE_MIXART, /* Digigram miXart cards */ 89 SNDRV_HWDEP_IFACE_USX2Y, /* Tascam US122, US224 & US428 usb */ 90 SNDRV_HWDEP_IFACE_EMUX_WAVETABLE, /* EmuX wavetable */ 91 SNDRV_HWDEP_IFACE_BLUETOOTH, /* Bluetooth audio */ 92 SNDRV_HWDEP_IFACE_USX2Y_PCM, /* Tascam US122, US224 & US428 rawusb pcm */ 93 SNDRV_HWDEP_IFACE_PCXHR, /* Digigram PCXHR */ 94 SNDRV_HWDEP_IFACE_SB_RC, /* SB Extigy/Audigy2NX remote control */ 95 SNDRV_HWDEP_IFACE_HDA, /* HD-audio */ 96 SNDRV_HWDEP_IFACE_USB_STREAM, /* direct access to usb stream */ 97 98 /* Don't forget to change the following: */ 99 SNDRV_HWDEP_IFACE_LAST = SNDRV_HWDEP_IFACE_USB_STREAM 100}; 101 102struct snd_hwdep_info { 103 unsigned int device; /* WR: device number */ 104 int card; /* R: card number */ 105 unsigned char id[64]; /* ID (user selectable) */ 106 unsigned char name[80]; /* hwdep name */ 107 int iface; /* hwdep interface */ 108 unsigned char reserved[64]; /* reserved for future */ 109}; 110 111/* generic DSP loader */ 112struct snd_hwdep_dsp_status { 113 unsigned int version; /* R: driver-specific version */ 114 unsigned char id[32]; /* R: driver-specific ID string */ 115 unsigned int num_dsps; /* R: number of DSP images to transfer */ 116 unsigned int dsp_loaded; /* R: bit flags indicating the loaded DSPs */ 117 unsigned int chip_ready; /* R: 1 = initialization finished */ 118 unsigned char reserved[16]; /* reserved for future use */ 119}; 120 121struct snd_hwdep_dsp_image { 122 unsigned int index; /* W: DSP index */ 123 unsigned char name[64]; /* W: ID (e.g. file name) */ 124 unsigned char __user *image; /* W: binary image */ 125 size_t length; /* W: size of image in bytes */ 126 unsigned long driver_data; /* W: driver-specific data */ 127}; 128 129enum { 130 SNDRV_HWDEP_IOCTL_PVERSION = _IOR ('H', 0x00, int), 131 SNDRV_HWDEP_IOCTL_INFO = _IOR ('H', 0x01, struct snd_hwdep_info), 132 SNDRV_HWDEP_IOCTL_DSP_STATUS = _IOR('H', 0x02, struct snd_hwdep_dsp_status), 133 SNDRV_HWDEP_IOCTL_DSP_LOAD = _IOW('H', 0x03, struct snd_hwdep_dsp_image) 134}; 135 136/***************************************************************************** 137 * * 138 * Digital Audio (PCM) interface - /dev/snd/pcm?? * 139 * * 140 *****************************************************************************/ 141 142#define SNDRV_PCM_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 9) 143 144typedef unsigned long snd_pcm_uframes_t; 145typedef signed long snd_pcm_sframes_t; 146 147enum { 148 SNDRV_PCM_CLASS_GENERIC = 0, /* standard mono or stereo device */ 149 SNDRV_PCM_CLASS_MULTI, /* multichannel device */ 150 SNDRV_PCM_CLASS_MODEM, /* software modem class */ 151 SNDRV_PCM_CLASS_DIGITIZER, /* digitizer class */ 152 /* Don't forget to change the following: */ 153 SNDRV_PCM_CLASS_LAST = SNDRV_PCM_CLASS_DIGITIZER, 154}; 155 156enum { 157 SNDRV_PCM_SUBCLASS_GENERIC_MIX = 0, /* mono or stereo subdevices are mixed together */ 158 SNDRV_PCM_SUBCLASS_MULTI_MIX, /* multichannel subdevices are mixed together */ 159 /* Don't forget to change the following: */ 160 SNDRV_PCM_SUBCLASS_LAST = SNDRV_PCM_SUBCLASS_MULTI_MIX, 161}; 162 163enum { 164 SNDRV_PCM_STREAM_PLAYBACK = 0, 165 SNDRV_PCM_STREAM_CAPTURE, 166 SNDRV_PCM_STREAM_LAST = SNDRV_PCM_STREAM_CAPTURE, 167}; 168 169typedef int __bitwise snd_pcm_access_t; 170#define SNDRV_PCM_ACCESS_MMAP_INTERLEAVED ((__force snd_pcm_access_t) 0) /* interleaved mmap */ 171#define SNDRV_PCM_ACCESS_MMAP_NONINTERLEAVED ((__force snd_pcm_access_t) 1) /* noninterleaved mmap */ 172#define SNDRV_PCM_ACCESS_MMAP_COMPLEX ((__force snd_pcm_access_t) 2) /* complex mmap */ 173#define SNDRV_PCM_ACCESS_RW_INTERLEAVED ((__force snd_pcm_access_t) 3) /* readi/writei */ 174#define SNDRV_PCM_ACCESS_RW_NONINTERLEAVED ((__force snd_pcm_access_t) 4) /* readn/writen */ 175#define SNDRV_PCM_ACCESS_LAST SNDRV_PCM_ACCESS_RW_NONINTERLEAVED 176 177typedef int __bitwise snd_pcm_format_t; 178#define SNDRV_PCM_FORMAT_S8 ((__force snd_pcm_format_t) 0) 179#define SNDRV_PCM_FORMAT_U8 ((__force snd_pcm_format_t) 1) 180#define SNDRV_PCM_FORMAT_S16_LE ((__force snd_pcm_format_t) 2) 181#define SNDRV_PCM_FORMAT_S16_BE ((__force snd_pcm_format_t) 3) 182#define SNDRV_PCM_FORMAT_U16_LE ((__force snd_pcm_format_t) 4) 183#define SNDRV_PCM_FORMAT_U16_BE ((__force snd_pcm_format_t) 5) 184#define SNDRV_PCM_FORMAT_S24_LE ((__force snd_pcm_format_t) 6) /* low three bytes */ 185#define SNDRV_PCM_FORMAT_S24_BE ((__force snd_pcm_format_t) 7) /* low three bytes */ 186#define SNDRV_PCM_FORMAT_U24_LE ((__force snd_pcm_format_t) 8) /* low three bytes */ 187#define SNDRV_PCM_FORMAT_U24_BE ((__force snd_pcm_format_t) 9) /* low three bytes */ 188#define SNDRV_PCM_FORMAT_S32_LE ((__force snd_pcm_format_t) 10) 189#define SNDRV_PCM_FORMAT_S32_BE ((__force snd_pcm_format_t) 11) 190#define SNDRV_PCM_FORMAT_U32_LE ((__force snd_pcm_format_t) 12) 191#define SNDRV_PCM_FORMAT_U32_BE ((__force snd_pcm_format_t) 13) 192#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 */ 193#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 */ 194#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 */ 195#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 */ 196#define SNDRV_PCM_FORMAT_IEC958_SUBFRAME_LE ((__force snd_pcm_format_t) 18) /* IEC-958 subframe, Little Endian */ 197#define SNDRV_PCM_FORMAT_IEC958_SUBFRAME_BE ((__force snd_pcm_format_t) 19) /* IEC-958 subframe, Big Endian */ 198#define SNDRV_PCM_FORMAT_MU_LAW ((__force snd_pcm_format_t) 20) 199#define SNDRV_PCM_FORMAT_A_LAW ((__force snd_pcm_format_t) 21) 200#define SNDRV_PCM_FORMAT_IMA_ADPCM ((__force snd_pcm_format_t) 22) 201#define SNDRV_PCM_FORMAT_MPEG ((__force snd_pcm_format_t) 23) 202#define SNDRV_PCM_FORMAT_GSM ((__force snd_pcm_format_t) 24) 203#define SNDRV_PCM_FORMAT_SPECIAL ((__force snd_pcm_format_t) 31) 204#define SNDRV_PCM_FORMAT_S24_3LE ((__force snd_pcm_format_t) 32) /* in three bytes */ 205#define SNDRV_PCM_FORMAT_S24_3BE ((__force snd_pcm_format_t) 33) /* in three bytes */ 206#define SNDRV_PCM_FORMAT_U24_3LE ((__force snd_pcm_format_t) 34) /* in three bytes */ 207#define SNDRV_PCM_FORMAT_U24_3BE ((__force snd_pcm_format_t) 35) /* in three bytes */ 208#define SNDRV_PCM_FORMAT_S20_3LE ((__force snd_pcm_format_t) 36) /* in three bytes */ 209#define SNDRV_PCM_FORMAT_S20_3BE ((__force snd_pcm_format_t) 37) /* in three bytes */ 210#define SNDRV_PCM_FORMAT_U20_3LE ((__force snd_pcm_format_t) 38) /* in three bytes */ 211#define SNDRV_PCM_FORMAT_U20_3BE ((__force snd_pcm_format_t) 39) /* in three bytes */ 212#define SNDRV_PCM_FORMAT_S18_3LE ((__force snd_pcm_format_t) 40) /* in three bytes */ 213#define SNDRV_PCM_FORMAT_S18_3BE ((__force snd_pcm_format_t) 41) /* in three bytes */ 214#define SNDRV_PCM_FORMAT_U18_3LE ((__force snd_pcm_format_t) 42) /* in three bytes */ 215#define SNDRV_PCM_FORMAT_U18_3BE ((__force snd_pcm_format_t) 43) /* in three bytes */ 216#define SNDRV_PCM_FORMAT_LAST SNDRV_PCM_FORMAT_U18_3BE 217 218#ifdef SNDRV_LITTLE_ENDIAN 219#define SNDRV_PCM_FORMAT_S16 SNDRV_PCM_FORMAT_S16_LE 220#define SNDRV_PCM_FORMAT_U16 SNDRV_PCM_FORMAT_U16_LE 221#define SNDRV_PCM_FORMAT_S24 SNDRV_PCM_FORMAT_S24_LE 222#define SNDRV_PCM_FORMAT_U24 SNDRV_PCM_FORMAT_U24_LE 223#define SNDRV_PCM_FORMAT_S32 SNDRV_PCM_FORMAT_S32_LE 224#define SNDRV_PCM_FORMAT_U32 SNDRV_PCM_FORMAT_U32_LE 225#define SNDRV_PCM_FORMAT_FLOAT SNDRV_PCM_FORMAT_FLOAT_LE 226#define SNDRV_PCM_FORMAT_FLOAT64 SNDRV_PCM_FORMAT_FLOAT64_LE 227#define SNDRV_PCM_FORMAT_IEC958_SUBFRAME SNDRV_PCM_FORMAT_IEC958_SUBFRAME_LE 228#endif 229#ifdef SNDRV_BIG_ENDIAN 230#define SNDRV_PCM_FORMAT_S16 SNDRV_PCM_FORMAT_S16_BE 231#define SNDRV_PCM_FORMAT_U16 SNDRV_PCM_FORMAT_U16_BE 232#define SNDRV_PCM_FORMAT_S24 SNDRV_PCM_FORMAT_S24_BE 233#define SNDRV_PCM_FORMAT_U24 SNDRV_PCM_FORMAT_U24_BE 234#define SNDRV_PCM_FORMAT_S32 SNDRV_PCM_FORMAT_S32_BE 235#define SNDRV_PCM_FORMAT_U32 SNDRV_PCM_FORMAT_U32_BE 236#define SNDRV_PCM_FORMAT_FLOAT SNDRV_PCM_FORMAT_FLOAT_BE 237#define SNDRV_PCM_FORMAT_FLOAT64 SNDRV_PCM_FORMAT_FLOAT64_BE 238#define SNDRV_PCM_FORMAT_IEC958_SUBFRAME SNDRV_PCM_FORMAT_IEC958_SUBFRAME_BE 239#endif 240 241typedef int __bitwise snd_pcm_subformat_t; 242#define SNDRV_PCM_SUBFORMAT_STD ((__force snd_pcm_subformat_t) 0) 243#define SNDRV_PCM_SUBFORMAT_LAST SNDRV_PCM_SUBFORMAT_STD 244 245#define SNDRV_PCM_INFO_MMAP 0x00000001 /* hardware supports mmap */ 246#define SNDRV_PCM_INFO_MMAP_VALID 0x00000002 /* period data are valid during transfer */ 247#define SNDRV_PCM_INFO_DOUBLE 0x00000004 /* Double buffering needed for PCM start/stop */ 248#define SNDRV_PCM_INFO_BATCH 0x00000010 /* double buffering */ 249#define SNDRV_PCM_INFO_INTERLEAVED 0x00000100 /* channels are interleaved */ 250#define SNDRV_PCM_INFO_NONINTERLEAVED 0x00000200 /* channels are not interleaved */ 251#define SNDRV_PCM_INFO_COMPLEX 0x00000400 /* complex frame organization (mmap only) */ 252#define SNDRV_PCM_INFO_BLOCK_TRANSFER 0x00010000 /* hardware transfer block of samples */ 253#define SNDRV_PCM_INFO_OVERRANGE 0x00020000 /* hardware supports ADC (capture) overrange detection */ 254#define SNDRV_PCM_INFO_RESUME 0x00040000 /* hardware supports stream resume after suspend */ 255#define SNDRV_PCM_INFO_PAUSE 0x00080000 /* pause ioctl is supported */ 256#define SNDRV_PCM_INFO_HALF_DUPLEX 0x00100000 /* only half duplex */ 257#define SNDRV_PCM_INFO_JOINT_DUPLEX 0x00200000 /* playback and capture stream are somewhat correlated */ 258#define SNDRV_PCM_INFO_SYNC_START 0x00400000 /* pcm support some kind of sync go */ 259 260typedef int __bitwise snd_pcm_state_t; 261#define SNDRV_PCM_STATE_OPEN ((__force snd_pcm_state_t) 0) /* stream is open */ 262#define SNDRV_PCM_STATE_SETUP ((__force snd_pcm_state_t) 1) /* stream has a setup */ 263#define SNDRV_PCM_STATE_PREPARED ((__force snd_pcm_state_t) 2) /* stream is ready to start */ 264#define SNDRV_PCM_STATE_RUNNING ((__force snd_pcm_state_t) 3) /* stream is running */ 265#define SNDRV_PCM_STATE_XRUN ((__force snd_pcm_state_t) 4) /* stream reached an xrun */ 266#define SNDRV_PCM_STATE_DRAINING ((__force snd_pcm_state_t) 5) /* stream is draining */ 267#define SNDRV_PCM_STATE_PAUSED ((__force snd_pcm_state_t) 6) /* stream is paused */ 268#define SNDRV_PCM_STATE_SUSPENDED ((__force snd_pcm_state_t) 7) /* hardware is suspended */ 269#define SNDRV_PCM_STATE_DISCONNECTED ((__force snd_pcm_state_t) 8) /* hardware is disconnected */ 270#define SNDRV_PCM_STATE_LAST SNDRV_PCM_STATE_DISCONNECTED 271 272enum { 273 SNDRV_PCM_MMAP_OFFSET_DATA = 0x00000000, 274 SNDRV_PCM_MMAP_OFFSET_STATUS = 0x80000000, 275 SNDRV_PCM_MMAP_OFFSET_CONTROL = 0x81000000, 276}; 277 278union snd_pcm_sync_id { 279 unsigned char id[16]; 280 unsigned short id16[8]; 281 unsigned int id32[4]; 282}; 283 284struct snd_pcm_info { 285 unsigned int device; /* RO/WR (control): device number */ 286 unsigned int subdevice; /* RO/WR (control): subdevice number */ 287 int stream; /* RO/WR (control): stream direction */ 288 int card; /* R: card number */ 289 unsigned char id[64]; /* ID (user selectable) */ 290 unsigned char name[80]; /* name of this device */ 291 unsigned char subname[32]; /* subdevice name */ 292 int dev_class; /* SNDRV_PCM_CLASS_* */ 293 int dev_subclass; /* SNDRV_PCM_SUBCLASS_* */ 294 unsigned int subdevices_count; 295 unsigned int subdevices_avail; 296 union snd_pcm_sync_id sync; /* hardware synchronization ID */ 297 unsigned char reserved[64]; /* reserved for future... */ 298}; 299 300typedef int snd_pcm_hw_param_t; 301#define SNDRV_PCM_HW_PARAM_ACCESS 0 /* Access type */ 302#define SNDRV_PCM_HW_PARAM_FORMAT 1 /* Format */ 303#define SNDRV_PCM_HW_PARAM_SUBFORMAT 2 /* Subformat */ 304#define SNDRV_PCM_HW_PARAM_FIRST_MASK SNDRV_PCM_HW_PARAM_ACCESS 305#define SNDRV_PCM_HW_PARAM_LAST_MASK SNDRV_PCM_HW_PARAM_SUBFORMAT 306 307#define SNDRV_PCM_HW_PARAM_SAMPLE_BITS 8 /* Bits per sample */ 308#define SNDRV_PCM_HW_PARAM_FRAME_BITS 9 /* Bits per frame */ 309#define SNDRV_PCM_HW_PARAM_CHANNELS 10 /* Channels */ 310#define SNDRV_PCM_HW_PARAM_RATE 11 /* Approx rate */ 311#define SNDRV_PCM_HW_PARAM_PERIOD_TIME 12 /* Approx distance between 312 * interrupts in us 313 */ 314#define SNDRV_PCM_HW_PARAM_PERIOD_SIZE 13 /* Approx frames between 315 * interrupts 316 */ 317#define SNDRV_PCM_HW_PARAM_PERIOD_BYTES 14 /* Approx bytes between 318 * interrupts 319 */ 320#define SNDRV_PCM_HW_PARAM_PERIODS 15 /* Approx interrupts per 321 * buffer 322 */ 323#define SNDRV_PCM_HW_PARAM_BUFFER_TIME 16 /* Approx duration of buffer 324 * in us 325 */ 326#define SNDRV_PCM_HW_PARAM_BUFFER_SIZE 17 /* Size of buffer in frames */ 327#define SNDRV_PCM_HW_PARAM_BUFFER_BYTES 18 /* Size of buffer in bytes */ 328#define SNDRV_PCM_HW_PARAM_TICK_TIME 19 /* Approx tick duration in us */ 329#define SNDRV_PCM_HW_PARAM_FIRST_INTERVAL SNDRV_PCM_HW_PARAM_SAMPLE_BITS 330#define SNDRV_PCM_HW_PARAM_LAST_INTERVAL SNDRV_PCM_HW_PARAM_TICK_TIME 331 332#define SNDRV_PCM_HW_PARAMS_NORESAMPLE (1<<0) /* avoid rate resampling */ 333 334struct snd_interval { 335 unsigned int min, max; 336 unsigned int openmin:1, 337 openmax:1, 338 integer:1, 339 empty:1; 340}; 341 342#define SNDRV_MASK_MAX 256 343 344struct snd_mask { 345 u_int32_t bits[(SNDRV_MASK_MAX+31)/32]; 346}; 347 348struct snd_pcm_hw_params { 349 unsigned int flags; 350 struct snd_mask masks[SNDRV_PCM_HW_PARAM_LAST_MASK - 351 SNDRV_PCM_HW_PARAM_FIRST_MASK + 1]; 352 struct snd_mask mres[5]; /* reserved masks */ 353 struct snd_interval intervals[SNDRV_PCM_HW_PARAM_LAST_INTERVAL - 354 SNDRV_PCM_HW_PARAM_FIRST_INTERVAL + 1]; 355 struct snd_interval ires[9]; /* reserved intervals */ 356 unsigned int rmask; /* W: requested masks */ 357 unsigned int cmask; /* R: changed masks */ 358 unsigned int info; /* R: Info flags for returned setup */ 359 unsigned int msbits; /* R: used most significant bits */ 360 unsigned int rate_num; /* R: rate numerator */ 361 unsigned int rate_den; /* R: rate denominator */ 362 snd_pcm_uframes_t fifo_size; /* R: chip FIFO size in frames */ 363 unsigned char reserved[64]; /* reserved for future */ 364}; 365 366enum { 367 SNDRV_PCM_TSTAMP_NONE = 0, 368 SNDRV_PCM_TSTAMP_ENABLE, 369 SNDRV_PCM_TSTAMP_LAST = SNDRV_PCM_TSTAMP_ENABLE, 370}; 371 372struct snd_pcm_sw_params { 373 int tstamp_mode; /* timestamp mode */ 374 unsigned int period_step; 375 unsigned int sleep_min; /* min ticks to sleep */ 376 snd_pcm_uframes_t avail_min; /* min avail frames for wakeup */ 377 snd_pcm_uframes_t xfer_align; /* obsolete: xfer size need to be a multiple */ 378 snd_pcm_uframes_t start_threshold; /* min hw_avail frames for automatic start */ 379 snd_pcm_uframes_t stop_threshold; /* min avail frames for automatic stop */ 380 snd_pcm_uframes_t silence_threshold; /* min distance from noise for silence filling */ 381 snd_pcm_uframes_t silence_size; /* silence block size */ 382 snd_pcm_uframes_t boundary; /* pointers wrap point */ 383 unsigned char reserved[64]; /* reserved for future */ 384}; 385 386struct snd_pcm_channel_info { 387 unsigned int channel; 388 off_t offset; /* mmap offset */ 389 unsigned int first; /* offset to first sample in bits */ 390 unsigned int step; /* samples distance in bits */ 391}; 392 393struct snd_pcm_status { 394 snd_pcm_state_t state; /* stream state */ 395 struct timespec trigger_tstamp; /* time when stream was started/stopped/paused */ 396 struct timespec tstamp; /* reference timestamp */ 397 snd_pcm_uframes_t appl_ptr; /* appl ptr */ 398 snd_pcm_uframes_t hw_ptr; /* hw ptr */ 399 snd_pcm_sframes_t delay; /* current delay in frames */ 400 snd_pcm_uframes_t avail; /* number of frames available */ 401 snd_pcm_uframes_t avail_max; /* max frames available on hw since last status */ 402 snd_pcm_uframes_t overrange; /* count of ADC (capture) overrange detections from last status */ 403 snd_pcm_state_t suspended_state; /* suspended stream state */ 404 unsigned char reserved[60]; /* must be filled with zero */ 405}; 406 407struct snd_pcm_mmap_status { 408 snd_pcm_state_t state; /* RO: state - SNDRV_PCM_STATE_XXXX */ 409 int pad1; /* Needed for 64 bit alignment */ 410 snd_pcm_uframes_t hw_ptr; /* RO: hw ptr (0...boundary-1) */ 411 struct timespec tstamp; /* Timestamp */ 412 snd_pcm_state_t suspended_state; /* RO: suspended stream state */ 413}; 414 415struct snd_pcm_mmap_control { 416 snd_pcm_uframes_t appl_ptr; /* RW: appl ptr (0...boundary-1) */ 417 snd_pcm_uframes_t avail_min; /* RW: min available frames for wakeup */ 418}; 419 420#define SNDRV_PCM_SYNC_PTR_HWSYNC (1<<0) /* execute hwsync */ 421#define SNDRV_PCM_SYNC_PTR_APPL (1<<1) /* get appl_ptr from driver (r/w op) */ 422#define SNDRV_PCM_SYNC_PTR_AVAIL_MIN (1<<2) /* get avail_min from driver */ 423 424struct snd_pcm_sync_ptr { 425 unsigned int flags; 426 union { 427 struct snd_pcm_mmap_status status; 428 unsigned char reserved[64]; 429 } s; 430 union { 431 struct snd_pcm_mmap_control control; 432 unsigned char reserved[64]; 433 } c; 434}; 435 436struct snd_xferi { 437 snd_pcm_sframes_t result; 438 void __user *buf; 439 snd_pcm_uframes_t frames; 440}; 441 442struct snd_xfern { 443 snd_pcm_sframes_t result; 444 void __user * __user *bufs; 445 snd_pcm_uframes_t frames; 446}; 447 448enum { 449 SNDRV_PCM_TSTAMP_TYPE_GETTIMEOFDAY = 0, /* gettimeofday equivalent */ 450 SNDRV_PCM_TSTAMP_TYPE_MONOTONIC, /* posix_clock_monotonic equivalent */ 451 SNDRV_PCM_TSTAMP_TYPE_LAST = SNDRV_PCM_TSTAMP_TYPE_MONOTONIC, 452}; 453 454enum { 455 SNDRV_PCM_IOCTL_PVERSION = _IOR('A', 0x00, int), 456 SNDRV_PCM_IOCTL_INFO = _IOR('A', 0x01, struct snd_pcm_info), 457 SNDRV_PCM_IOCTL_TSTAMP = _IOW('A', 0x02, int), 458 SNDRV_PCM_IOCTL_TTSTAMP = _IOW('A', 0x03, int), 459 SNDRV_PCM_IOCTL_HW_REFINE = _IOWR('A', 0x10, struct snd_pcm_hw_params), 460 SNDRV_PCM_IOCTL_HW_PARAMS = _IOWR('A', 0x11, struct snd_pcm_hw_params), 461 SNDRV_PCM_IOCTL_HW_FREE = _IO('A', 0x12), 462 SNDRV_PCM_IOCTL_SW_PARAMS = _IOWR('A', 0x13, struct snd_pcm_sw_params), 463 SNDRV_PCM_IOCTL_STATUS = _IOR('A', 0x20, struct snd_pcm_status), 464 SNDRV_PCM_IOCTL_DELAY = _IOR('A', 0x21, snd_pcm_sframes_t), 465 SNDRV_PCM_IOCTL_HWSYNC = _IO('A', 0x22), 466 SNDRV_PCM_IOCTL_SYNC_PTR = _IOWR('A', 0x23, struct snd_pcm_sync_ptr), 467 SNDRV_PCM_IOCTL_CHANNEL_INFO = _IOR('A', 0x32, struct snd_pcm_channel_info), 468 SNDRV_PCM_IOCTL_PREPARE = _IO('A', 0x40), 469 SNDRV_PCM_IOCTL_RESET = _IO('A', 0x41), 470 SNDRV_PCM_IOCTL_START = _IO('A', 0x42), 471 SNDRV_PCM_IOCTL_DROP = _IO('A', 0x43), 472 SNDRV_PCM_IOCTL_DRAIN = _IO('A', 0x44), 473 SNDRV_PCM_IOCTL_PAUSE = _IOW('A', 0x45, int), 474 SNDRV_PCM_IOCTL_REWIND = _IOW('A', 0x46, snd_pcm_uframes_t), 475 SNDRV_PCM_IOCTL_RESUME = _IO('A', 0x47), 476 SNDRV_PCM_IOCTL_XRUN = _IO('A', 0x48), 477 SNDRV_PCM_IOCTL_FORWARD = _IOW('A', 0x49, snd_pcm_uframes_t), 478 SNDRV_PCM_IOCTL_WRITEI_FRAMES = _IOW('A', 0x50, struct snd_xferi), 479 SNDRV_PCM_IOCTL_READI_FRAMES = _IOR('A', 0x51, struct snd_xferi), 480 SNDRV_PCM_IOCTL_WRITEN_FRAMES = _IOW('A', 0x52, struct snd_xfern), 481 SNDRV_PCM_IOCTL_READN_FRAMES = _IOR('A', 0x53, struct snd_xfern), 482 SNDRV_PCM_IOCTL_LINK = _IOW('A', 0x60, int), 483 SNDRV_PCM_IOCTL_UNLINK = _IO('A', 0x61), 484}; 485 486/* Trick to make alsa-lib/acinclude.m4 happy */ 487#define SNDRV_PCM_IOCTL_REWIND SNDRV_PCM_IOCTL_REWIND 488 489/***************************************************************************** 490 * * 491 * MIDI v1.0 interface * 492 * * 493 *****************************************************************************/ 494 495/* 496 * Raw MIDI section - /dev/snd/midi?? 497 */ 498 499#define SNDRV_RAWMIDI_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 0) 500 501enum { 502 SNDRV_RAWMIDI_STREAM_OUTPUT = 0, 503 SNDRV_RAWMIDI_STREAM_INPUT, 504 SNDRV_RAWMIDI_STREAM_LAST = SNDRV_RAWMIDI_STREAM_INPUT, 505}; 506 507#define SNDRV_RAWMIDI_INFO_OUTPUT 0x00000001 508#define SNDRV_RAWMIDI_INFO_INPUT 0x00000002 509#define SNDRV_RAWMIDI_INFO_DUPLEX 0x00000004 510 511struct snd_rawmidi_info { 512 unsigned int device; /* RO/WR (control): device number */ 513 unsigned int subdevice; /* RO/WR (control): subdevice number */ 514 int stream; /* WR: stream */ 515 int card; /* R: card number */ 516 unsigned int flags; /* SNDRV_RAWMIDI_INFO_XXXX */ 517 unsigned char id[64]; /* ID (user selectable) */ 518 unsigned char name[80]; /* name of device */ 519 unsigned char subname[32]; /* name of active or selected subdevice */ 520 unsigned int subdevices_count; 521 unsigned int subdevices_avail; 522 unsigned char reserved[64]; /* reserved for future use */ 523}; 524 525struct snd_rawmidi_params { 526 int stream; 527 size_t buffer_size; /* queue size in bytes */ 528 size_t avail_min; /* minimum avail bytes for wakeup */ 529 unsigned int no_active_sensing: 1; /* do not send active sensing byte in close() */ 530 unsigned char reserved[16]; /* reserved for future use */ 531}; 532 533struct snd_rawmidi_status { 534 int stream; 535 struct timespec tstamp; /* Timestamp */ 536 size_t avail; /* available bytes */ 537 size_t xruns; /* count of overruns since last status (in bytes) */ 538 unsigned char reserved[16]; /* reserved for future use */ 539}; 540 541enum { 542 SNDRV_RAWMIDI_IOCTL_PVERSION = _IOR('W', 0x00, int), 543 SNDRV_RAWMIDI_IOCTL_INFO = _IOR('W', 0x01, struct snd_rawmidi_info), 544 SNDRV_RAWMIDI_IOCTL_PARAMS = _IOWR('W', 0x10, struct snd_rawmidi_params), 545 SNDRV_RAWMIDI_IOCTL_STATUS = _IOWR('W', 0x20, struct snd_rawmidi_status), 546 SNDRV_RAWMIDI_IOCTL_DROP = _IOW('W', 0x30, int), 547 SNDRV_RAWMIDI_IOCTL_DRAIN = _IOW('W', 0x31, int), 548}; 549 550/* 551 * Timer section - /dev/snd/timer 552 */ 553 554#define SNDRV_TIMER_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 5) 555 556enum { 557 SNDRV_TIMER_CLASS_NONE = -1, 558 SNDRV_TIMER_CLASS_SLAVE = 0, 559 SNDRV_TIMER_CLASS_GLOBAL, 560 SNDRV_TIMER_CLASS_CARD, 561 SNDRV_TIMER_CLASS_PCM, 562 SNDRV_TIMER_CLASS_LAST = SNDRV_TIMER_CLASS_PCM, 563}; 564 565/* slave timer classes */ 566enum { 567 SNDRV_TIMER_SCLASS_NONE = 0, 568 SNDRV_TIMER_SCLASS_APPLICATION, 569 SNDRV_TIMER_SCLASS_SEQUENCER, /* alias */ 570 SNDRV_TIMER_SCLASS_OSS_SEQUENCER, /* alias */ 571 SNDRV_TIMER_SCLASS_LAST = SNDRV_TIMER_SCLASS_OSS_SEQUENCER, 572}; 573 574/* global timers (device member) */ 575#define SNDRV_TIMER_GLOBAL_SYSTEM 0 576#define SNDRV_TIMER_GLOBAL_RTC 1 577#define SNDRV_TIMER_GLOBAL_HPET 2 578#define SNDRV_TIMER_GLOBAL_HRTIMER 3 579 580/* info flags */ 581#define SNDRV_TIMER_FLG_SLAVE (1<<0) /* cannot be controlled */ 582 583struct snd_timer_id { 584 int dev_class; 585 int dev_sclass; 586 int card; 587 int device; 588 int subdevice; 589}; 590 591struct snd_timer_ginfo { 592 struct snd_timer_id tid; /* requested timer ID */ 593 unsigned int flags; /* timer flags - SNDRV_TIMER_FLG_* */ 594 int card; /* card number */ 595 unsigned char id[64]; /* timer identification */ 596 unsigned char name[80]; /* timer name */ 597 unsigned long reserved0; /* reserved for future use */ 598 unsigned long resolution; /* average period resolution in ns */ 599 unsigned long resolution_min; /* minimal period resolution in ns */ 600 unsigned long resolution_max; /* maximal period resolution in ns */ 601 unsigned int clients; /* active timer clients */ 602 unsigned char reserved[32]; 603}; 604 605struct snd_timer_gparams { 606 struct snd_timer_id tid; /* requested timer ID */ 607 unsigned long period_num; /* requested precise period duration (in seconds) - numerator */ 608 unsigned long period_den; /* requested precise period duration (in seconds) - denominator */ 609 unsigned char reserved[32]; 610}; 611 612struct snd_timer_gstatus { 613 struct snd_timer_id tid; /* requested timer ID */ 614 unsigned long resolution; /* current period resolution in ns */ 615 unsigned long resolution_num; /* precise current period resolution (in seconds) - numerator */ 616 unsigned long resolution_den; /* precise current period resolution (in seconds) - denominator */ 617 unsigned char reserved[32]; 618}; 619 620struct snd_timer_select { 621 struct snd_timer_id id; /* bind to timer ID */ 622 unsigned char reserved[32]; /* reserved */ 623}; 624 625struct snd_timer_info { 626 unsigned int flags; /* timer flags - SNDRV_TIMER_FLG_* */ 627 int card; /* card number */ 628 unsigned char id[64]; /* timer identificator */ 629 unsigned char name[80]; /* timer name */ 630 unsigned long reserved0; /* reserved for future use */ 631 unsigned long resolution; /* average period resolution in ns */ 632 unsigned char reserved[64]; /* reserved */ 633}; 634 635#define SNDRV_TIMER_PSFLG_AUTO (1<<0) /* auto start, otherwise one-shot */ 636#define SNDRV_TIMER_PSFLG_EXCLUSIVE (1<<1) /* exclusive use, precise start/stop/pause/continue */ 637#define SNDRV_TIMER_PSFLG_EARLY_EVENT (1<<2) /* write early event to the poll queue */ 638 639struct snd_timer_params { 640 unsigned int flags; /* flags - SNDRV_MIXER_PSFLG_* */ 641 unsigned int ticks; /* requested resolution in ticks */ 642 unsigned int queue_size; /* total size of queue (32-1024) */ 643 unsigned int reserved0; /* reserved, was: failure locations */ 644 unsigned int filter; /* event filter (bitmask of SNDRV_TIMER_EVENT_*) */ 645 unsigned char reserved[60]; /* reserved */ 646}; 647 648struct snd_timer_status { 649 struct timespec tstamp; /* Timestamp - last update */ 650 unsigned int resolution; /* current period resolution in ns */ 651 unsigned int lost; /* counter of master tick lost */ 652 unsigned int overrun; /* count of read queue overruns */ 653 unsigned int queue; /* used queue size */ 654 unsigned char reserved[64]; /* reserved */ 655}; 656 657enum { 658 SNDRV_TIMER_IOCTL_PVERSION = _IOR('T', 0x00, int), 659 SNDRV_TIMER_IOCTL_NEXT_DEVICE = _IOWR('T', 0x01, struct snd_timer_id), 660 SNDRV_TIMER_IOCTL_TREAD = _IOW('T', 0x02, int), 661 SNDRV_TIMER_IOCTL_GINFO = _IOWR('T', 0x03, struct snd_timer_ginfo), 662 SNDRV_TIMER_IOCTL_GPARAMS = _IOW('T', 0x04, struct snd_timer_gparams), 663 SNDRV_TIMER_IOCTL_GSTATUS = _IOWR('T', 0x05, struct snd_timer_gstatus), 664 SNDRV_TIMER_IOCTL_SELECT = _IOW('T', 0x10, struct snd_timer_select), 665 SNDRV_TIMER_IOCTL_INFO = _IOR('T', 0x11, struct snd_timer_info), 666 SNDRV_TIMER_IOCTL_PARAMS = _IOW('T', 0x12, struct snd_timer_params), 667 SNDRV_TIMER_IOCTL_STATUS = _IOR('T', 0x14, struct snd_timer_status), 668 /* The following four ioctls are changed since 1.0.9 due to confliction */ 669 SNDRV_TIMER_IOCTL_START = _IO('T', 0xa0), 670 SNDRV_TIMER_IOCTL_STOP = _IO('T', 0xa1), 671 SNDRV_TIMER_IOCTL_CONTINUE = _IO('T', 0xa2), 672 SNDRV_TIMER_IOCTL_PAUSE = _IO('T', 0xa3), 673}; 674 675struct snd_timer_read { 676 unsigned int resolution; 677 unsigned int ticks; 678}; 679 680enum { 681 SNDRV_TIMER_EVENT_RESOLUTION = 0, /* val = resolution in ns */ 682 SNDRV_TIMER_EVENT_TICK, /* val = ticks */ 683 SNDRV_TIMER_EVENT_START, /* val = resolution in ns */ 684 SNDRV_TIMER_EVENT_STOP, /* val = 0 */ 685 SNDRV_TIMER_EVENT_CONTINUE, /* val = resolution in ns */ 686 SNDRV_TIMER_EVENT_PAUSE, /* val = 0 */ 687 SNDRV_TIMER_EVENT_EARLY, /* val = 0, early event */ 688 SNDRV_TIMER_EVENT_SUSPEND, /* val = 0 */ 689 SNDRV_TIMER_EVENT_RESUME, /* val = resolution in ns */ 690 /* master timer events for slave timer instances */ 691 SNDRV_TIMER_EVENT_MSTART = SNDRV_TIMER_EVENT_START + 10, 692 SNDRV_TIMER_EVENT_MSTOP = SNDRV_TIMER_EVENT_STOP + 10, 693 SNDRV_TIMER_EVENT_MCONTINUE = SNDRV_TIMER_EVENT_CONTINUE + 10, 694 SNDRV_TIMER_EVENT_MPAUSE = SNDRV_TIMER_EVENT_PAUSE + 10, 695 SNDRV_TIMER_EVENT_MSUSPEND = SNDRV_TIMER_EVENT_SUSPEND + 10, 696 SNDRV_TIMER_EVENT_MRESUME = SNDRV_TIMER_EVENT_RESUME + 10, 697}; 698 699struct snd_timer_tread { 700 int event; 701 struct timespec tstamp; 702 unsigned int val; 703}; 704 705/**************************************************************************** 706 * * 707 * Section for driver control interface - /dev/snd/control? * 708 * * 709 ****************************************************************************/ 710 711#define SNDRV_CTL_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 6) 712 713struct snd_ctl_card_info { 714 int card; /* card number */ 715 int pad; /* reserved for future (was type) */ 716 unsigned char id[16]; /* ID of card (user selectable) */ 717 unsigned char driver[16]; /* Driver name */ 718 unsigned char name[32]; /* Short name of soundcard */ 719 unsigned char longname[80]; /* name + info text about soundcard */ 720 unsigned char reserved_[16]; /* reserved for future (was ID of mixer) */ 721 unsigned char mixername[80]; /* visual mixer identification */ 722 unsigned char components[128]; /* card components / fine identification, delimited with one space (AC97 etc..) */ 723}; 724 725typedef int __bitwise snd_ctl_elem_type_t; 726#define SNDRV_CTL_ELEM_TYPE_NONE ((__force snd_ctl_elem_type_t) 0) /* invalid */ 727#define SNDRV_CTL_ELEM_TYPE_BOOLEAN ((__force snd_ctl_elem_type_t) 1) /* boolean type */ 728#define SNDRV_CTL_ELEM_TYPE_INTEGER ((__force snd_ctl_elem_type_t) 2) /* integer type */ 729#define SNDRV_CTL_ELEM_TYPE_ENUMERATED ((__force snd_ctl_elem_type_t) 3) /* enumerated type */ 730#define SNDRV_CTL_ELEM_TYPE_BYTES ((__force snd_ctl_elem_type_t) 4) /* byte array */ 731#define SNDRV_CTL_ELEM_TYPE_IEC958 ((__force snd_ctl_elem_type_t) 5) /* IEC958 (S/PDIF) setup */ 732#define SNDRV_CTL_ELEM_TYPE_INTEGER64 ((__force snd_ctl_elem_type_t) 6) /* 64-bit integer type */ 733#define SNDRV_CTL_ELEM_TYPE_LAST SNDRV_CTL_ELEM_TYPE_INTEGER64 734 735typedef int __bitwise snd_ctl_elem_iface_t; 736#define SNDRV_CTL_ELEM_IFACE_CARD ((__force snd_ctl_elem_iface_t) 0) /* global control */ 737#define SNDRV_CTL_ELEM_IFACE_HWDEP ((__force snd_ctl_elem_iface_t) 1) /* hardware dependent device */ 738#define SNDRV_CTL_ELEM_IFACE_MIXER ((__force snd_ctl_elem_iface_t) 2) /* virtual mixer device */ 739#define SNDRV_CTL_ELEM_IFACE_PCM ((__force snd_ctl_elem_iface_t) 3) /* PCM device */ 740#define SNDRV_CTL_ELEM_IFACE_RAWMIDI ((__force snd_ctl_elem_iface_t) 4) /* RawMidi device */ 741#define SNDRV_CTL_ELEM_IFACE_TIMER ((__force snd_ctl_elem_iface_t) 5) /* timer device */ 742#define SNDRV_CTL_ELEM_IFACE_SEQUENCER ((__force snd_ctl_elem_iface_t) 6) /* sequencer client */ 743#define SNDRV_CTL_ELEM_IFACE_LAST SNDRV_CTL_ELEM_IFACE_SEQUENCER 744 745#define SNDRV_CTL_ELEM_ACCESS_READ (1<<0) 746#define SNDRV_CTL_ELEM_ACCESS_WRITE (1<<1) 747#define SNDRV_CTL_ELEM_ACCESS_READWRITE (SNDRV_CTL_ELEM_ACCESS_READ|SNDRV_CTL_ELEM_ACCESS_WRITE) 748#define SNDRV_CTL_ELEM_ACCESS_VOLATILE (1<<2) /* control value may be changed without a notification */ 749#define SNDRV_CTL_ELEM_ACCESS_TIMESTAMP (1<<3) /* when was control changed */ 750#define SNDRV_CTL_ELEM_ACCESS_TLV_READ (1<<4) /* TLV read is possible */ 751#define SNDRV_CTL_ELEM_ACCESS_TLV_WRITE (1<<5) /* TLV write is possible */ 752#define SNDRV_CTL_ELEM_ACCESS_TLV_READWRITE (SNDRV_CTL_ELEM_ACCESS_TLV_READ|SNDRV_CTL_ELEM_ACCESS_TLV_WRITE) 753#define SNDRV_CTL_ELEM_ACCESS_TLV_COMMAND (1<<6) /* TLV command is possible */ 754#define SNDRV_CTL_ELEM_ACCESS_INACTIVE (1<<8) /* control does actually nothing, but may be updated */ 755#define SNDRV_CTL_ELEM_ACCESS_LOCK (1<<9) /* write lock */ 756#define SNDRV_CTL_ELEM_ACCESS_OWNER (1<<10) /* write lock owner */ 757#define SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK (1<<28) /* kernel use a TLV callback */ 758#define SNDRV_CTL_ELEM_ACCESS_USER (1<<29) /* user space element */ 759/* bits 30 and 31 are obsoleted (for indirect access) */ 760 761/* for further details see the ACPI and PCI power management specification */ 762#define SNDRV_CTL_POWER_D0 0x0000 /* full On */ 763#define SNDRV_CTL_POWER_D1 0x0100 /* partial On */ 764#define SNDRV_CTL_POWER_D2 0x0200 /* partial On */ 765#define SNDRV_CTL_POWER_D3 0x0300 /* Off */ 766#define SNDRV_CTL_POWER_D3hot (SNDRV_CTL_POWER_D3|0x0000) /* Off, with power */ 767#define SNDRV_CTL_POWER_D3cold (SNDRV_CTL_POWER_D3|0x0001) /* Off, without power */ 768 769struct snd_ctl_elem_id { 770 unsigned int numid; /* numeric identifier, zero = invalid */ 771 snd_ctl_elem_iface_t iface; /* interface identifier */ 772 unsigned int device; /* device/client number */ 773 unsigned int subdevice; /* subdevice (substream) number */ 774 unsigned char name[44]; /* ASCII name of item */ 775 unsigned int index; /* index of item */ 776}; 777 778struct snd_ctl_elem_list { 779 unsigned int offset; /* W: first element ID to get */ 780 unsigned int space; /* W: count of element IDs to get */ 781 unsigned int used; /* R: count of element IDs set */ 782 unsigned int count; /* R: count of all elements */ 783 struct snd_ctl_elem_id __user *pids; /* R: IDs */ 784 unsigned char reserved[50]; 785}; 786 787struct snd_ctl_elem_info { 788 struct snd_ctl_elem_id id; /* W: element ID */ 789 snd_ctl_elem_type_t type; /* R: value type - SNDRV_CTL_ELEM_TYPE_* */ 790 unsigned int access; /* R: value access (bitmask) - SNDRV_CTL_ELEM_ACCESS_* */ 791 unsigned int count; /* count of values */ 792 pid_t owner; /* owner's PID of this control */ 793 union { 794 struct { 795 long min; /* R: minimum value */ 796 long max; /* R: maximum value */ 797 long step; /* R: step (0 variable) */ 798 } integer; 799 struct { 800 long long min; /* R: minimum value */ 801 long long max; /* R: maximum value */ 802 long long step; /* R: step (0 variable) */ 803 } integer64; 804 struct { 805 unsigned int items; /* R: number of items */ 806 unsigned int item; /* W: item number */ 807 char name[64]; /* R: value name */ 808 } enumerated; 809 unsigned char reserved[128]; 810 } value; 811 union { 812 unsigned short d[4]; /* dimensions */ 813 unsigned short *d_ptr; /* indirect - obsoleted */ 814 } dimen; 815 unsigned char reserved[64-4*sizeof(unsigned short)]; 816}; 817 818struct snd_ctl_elem_value { 819 struct snd_ctl_elem_id id; /* W: element ID */ 820 unsigned int indirect: 1; /* W: indirect access - obsoleted */ 821 union { 822 union { 823 long value[128]; 824 long *value_ptr; /* obsoleted */ 825 } integer; 826 union { 827 long long value[64]; 828 long long *value_ptr; /* obsoleted */ 829 } integer64; 830 union { 831 unsigned int item[128]; 832 unsigned int *item_ptr; /* obsoleted */ 833 } enumerated; 834 union { 835 unsigned char data[512]; 836 unsigned char *data_ptr; /* obsoleted */ 837 } bytes; 838 struct snd_aes_iec958 iec958; 839 } value; /* RO */ 840 struct timespec tstamp; 841 unsigned char reserved[128-sizeof(struct timespec)]; 842}; 843 844struct snd_ctl_tlv { 845 unsigned int numid; /* control element numeric identification */ 846 unsigned int length; /* in bytes aligned to 4 */ 847 unsigned int tlv[0]; /* first TLV */ 848}; 849 850enum { 851 SNDRV_CTL_IOCTL_PVERSION = _IOR('U', 0x00, int), 852 SNDRV_CTL_IOCTL_CARD_INFO = _IOR('U', 0x01, struct snd_ctl_card_info), 853 SNDRV_CTL_IOCTL_ELEM_LIST = _IOWR('U', 0x10, struct snd_ctl_elem_list), 854 SNDRV_CTL_IOCTL_ELEM_INFO = _IOWR('U', 0x11, struct snd_ctl_elem_info), 855 SNDRV_CTL_IOCTL_ELEM_READ = _IOWR('U', 0x12, struct snd_ctl_elem_value), 856 SNDRV_CTL_IOCTL_ELEM_WRITE = _IOWR('U', 0x13, struct snd_ctl_elem_value), 857 SNDRV_CTL_IOCTL_ELEM_LOCK = _IOW('U', 0x14, struct snd_ctl_elem_id), 858 SNDRV_CTL_IOCTL_ELEM_UNLOCK = _IOW('U', 0x15, struct snd_ctl_elem_id), 859 SNDRV_CTL_IOCTL_SUBSCRIBE_EVENTS = _IOWR('U', 0x16, int), 860 SNDRV_CTL_IOCTL_ELEM_ADD = _IOWR('U', 0x17, struct snd_ctl_elem_info), 861 SNDRV_CTL_IOCTL_ELEM_REPLACE = _IOWR('U', 0x18, struct snd_ctl_elem_info), 862 SNDRV_CTL_IOCTL_ELEM_REMOVE = _IOWR('U', 0x19, struct snd_ctl_elem_id), 863 SNDRV_CTL_IOCTL_TLV_READ = _IOWR('U', 0x1a, struct snd_ctl_tlv), 864 SNDRV_CTL_IOCTL_TLV_WRITE = _IOWR('U', 0x1b, struct snd_ctl_tlv), 865 SNDRV_CTL_IOCTL_TLV_COMMAND = _IOWR('U', 0x1c, struct snd_ctl_tlv), 866 SNDRV_CTL_IOCTL_HWDEP_NEXT_DEVICE = _IOWR('U', 0x20, int), 867 SNDRV_CTL_IOCTL_HWDEP_INFO = _IOR('U', 0x21, struct snd_hwdep_info), 868 SNDRV_CTL_IOCTL_PCM_NEXT_DEVICE = _IOR('U', 0x30, int), 869 SNDRV_CTL_IOCTL_PCM_INFO = _IOWR('U', 0x31, struct snd_pcm_info), 870 SNDRV_CTL_IOCTL_PCM_PREFER_SUBDEVICE = _IOW('U', 0x32, int), 871 SNDRV_CTL_IOCTL_RAWMIDI_NEXT_DEVICE = _IOWR('U', 0x40, int), 872 SNDRV_CTL_IOCTL_RAWMIDI_INFO = _IOWR('U', 0x41, struct snd_rawmidi_info), 873 SNDRV_CTL_IOCTL_RAWMIDI_PREFER_SUBDEVICE = _IOW('U', 0x42, int), 874 SNDRV_CTL_IOCTL_POWER = _IOWR('U', 0xd0, int), 875 SNDRV_CTL_IOCTL_POWER_STATE = _IOR('U', 0xd1, int), 876}; 877 878/* 879 * Read interface. 880 */ 881 882enum sndrv_ctl_event_type { 883 SNDRV_CTL_EVENT_ELEM = 0, 884 SNDRV_CTL_EVENT_LAST = SNDRV_CTL_EVENT_ELEM, 885}; 886 887#define SNDRV_CTL_EVENT_MASK_VALUE (1<<0) /* element value was changed */ 888#define SNDRV_CTL_EVENT_MASK_INFO (1<<1) /* element info was changed */ 889#define SNDRV_CTL_EVENT_MASK_ADD (1<<2) /* element was added */ 890#define SNDRV_CTL_EVENT_MASK_TLV (1<<3) /* element TLV tree was changed */ 891#define SNDRV_CTL_EVENT_MASK_REMOVE (~0U) /* element was removed */ 892 893struct snd_ctl_event { 894 int type; /* event type - SNDRV_CTL_EVENT_* */ 895 union { 896 struct { 897 unsigned int mask; 898 struct snd_ctl_elem_id id; 899 } elem; 900 unsigned char data8[60]; 901 } data; 902}; 903 904/* 905 * Control names 906 */ 907 908#define SNDRV_CTL_NAME_NONE "" 909#define SNDRV_CTL_NAME_PLAYBACK "Playback " 910#define SNDRV_CTL_NAME_CAPTURE "Capture " 911 912#define SNDRV_CTL_NAME_IEC958_NONE "" 913#define SNDRV_CTL_NAME_IEC958_SWITCH "Switch" 914#define SNDRV_CTL_NAME_IEC958_VOLUME "Volume" 915#define SNDRV_CTL_NAME_IEC958_DEFAULT "Default" 916#define SNDRV_CTL_NAME_IEC958_MASK "Mask" 917#define SNDRV_CTL_NAME_IEC958_CON_MASK "Con Mask" 918#define SNDRV_CTL_NAME_IEC958_PRO_MASK "Pro Mask" 919#define SNDRV_CTL_NAME_IEC958_PCM_STREAM "PCM Stream" 920#define SNDRV_CTL_NAME_IEC958(expl,direction,what) "IEC958 " expl SNDRV_CTL_NAME_##direction SNDRV_CTL_NAME_IEC958_##what 921 922/* 923 * 924 */ 925 926struct snd_xferv { 927 const struct iovec *vector; 928 unsigned long count; 929}; 930 931enum { 932 SNDRV_IOCTL_READV = _IOW('K', 0x00, struct snd_xferv), 933 SNDRV_IOCTL_WRITEV = _IOW('K', 0x01, struct snd_xferv), 934}; 935 936#endif /* __SOUND_ASOUND_H */ 937