asound.h revision 5a53a7640a7af7acf904ed805c6fd1bf9fea829c
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#include <linux/types.h> 27 28#ifdef __KERNEL__ 29#include <linux/ioctl.h> 30#include <linux/time.h> 31#include <asm/byteorder.h> 32 33#ifdef __LITTLE_ENDIAN 34#define SNDRV_LITTLE_ENDIAN 35#else 36#ifdef __BIG_ENDIAN 37#define SNDRV_BIG_ENDIAN 38#else 39#error "Unsupported endian..." 40#endif 41#endif 42 43#endif /* __KERNEL__ **/ 44 45/* 46 * protocol version 47 */ 48 49#define SNDRV_PROTOCOL_VERSION(major, minor, subminor) (((major)<<16)|((minor)<<8)|(subminor)) 50#define SNDRV_PROTOCOL_MAJOR(version) (((version)>>16)&0xffff) 51#define SNDRV_PROTOCOL_MINOR(version) (((version)>>8)&0xff) 52#define SNDRV_PROTOCOL_MICRO(version) ((version)&0xff) 53#define SNDRV_PROTOCOL_INCOMPATIBLE(kversion, uversion) \ 54 (SNDRV_PROTOCOL_MAJOR(kversion) != SNDRV_PROTOCOL_MAJOR(uversion) || \ 55 (SNDRV_PROTOCOL_MAJOR(kversion) == SNDRV_PROTOCOL_MAJOR(uversion) && \ 56 SNDRV_PROTOCOL_MINOR(kversion) != SNDRV_PROTOCOL_MINOR(uversion))) 57 58/**************************************************************************** 59 * * 60 * Digital audio interface * 61 * * 62 ****************************************************************************/ 63 64struct snd_aes_iec958 { 65 unsigned char status[24]; /* AES/IEC958 channel status bits */ 66 unsigned char subcode[147]; /* AES/IEC958 subcode bits */ 67 unsigned char pad; /* nothing */ 68 unsigned char dig_subframe[4]; /* AES/IEC958 subframe bits */ 69}; 70 71/**************************************************************************** 72 * * 73 * Section for driver hardware dependent interface - /dev/snd/hw? * 74 * * 75 ****************************************************************************/ 76 77#define SNDRV_HWDEP_VERSION SNDRV_PROTOCOL_VERSION(1, 0, 1) 78 79enum { 80 SNDRV_HWDEP_IFACE_OPL2 = 0, 81 SNDRV_HWDEP_IFACE_OPL3, 82 SNDRV_HWDEP_IFACE_OPL4, 83 SNDRV_HWDEP_IFACE_SB16CSP, /* Creative Signal Processor */ 84 SNDRV_HWDEP_IFACE_EMU10K1, /* FX8010 processor in EMU10K1 chip */ 85 SNDRV_HWDEP_IFACE_YSS225, /* Yamaha FX processor */ 86 SNDRV_HWDEP_IFACE_ICS2115, /* Wavetable synth */ 87 SNDRV_HWDEP_IFACE_SSCAPE, /* Ensoniq SoundScape ISA card (MC68EC000) */ 88 SNDRV_HWDEP_IFACE_VX, /* Digigram VX cards */ 89 SNDRV_HWDEP_IFACE_MIXART, /* Digigram miXart cards */ 90 SNDRV_HWDEP_IFACE_USX2Y, /* Tascam US122, US224 & US428 usb */ 91 SNDRV_HWDEP_IFACE_EMUX_WAVETABLE, /* EmuX wavetable */ 92 SNDRV_HWDEP_IFACE_BLUETOOTH, /* Bluetooth audio */ 93 SNDRV_HWDEP_IFACE_USX2Y_PCM, /* Tascam US122, US224 & US428 rawusb pcm */ 94 SNDRV_HWDEP_IFACE_PCXHR, /* Digigram PCXHR */ 95 SNDRV_HWDEP_IFACE_SB_RC, /* SB Extigy/Audigy2NX remote control */ 96 SNDRV_HWDEP_IFACE_HDA, /* HD-audio */ 97 SNDRV_HWDEP_IFACE_USB_STREAM, /* direct access to usb stream */ 98 99 /* Don't forget to change the following: */ 100 SNDRV_HWDEP_IFACE_LAST = SNDRV_HWDEP_IFACE_USB_STREAM 101}; 102 103struct snd_hwdep_info { 104 unsigned int device; /* WR: device number */ 105 int card; /* R: card number */ 106 unsigned char id[64]; /* ID (user selectable) */ 107 unsigned char name[80]; /* hwdep name */ 108 int iface; /* hwdep interface */ 109 unsigned char reserved[64]; /* reserved for future */ 110}; 111 112/* generic DSP loader */ 113struct snd_hwdep_dsp_status { 114 unsigned int version; /* R: driver-specific version */ 115 unsigned char id[32]; /* R: driver-specific ID string */ 116 unsigned int num_dsps; /* R: number of DSP images to transfer */ 117 unsigned int dsp_loaded; /* R: bit flags indicating the loaded DSPs */ 118 unsigned int chip_ready; /* R: 1 = initialization finished */ 119 unsigned char reserved[16]; /* reserved for future use */ 120}; 121 122struct snd_hwdep_dsp_image { 123 unsigned int index; /* W: DSP index */ 124 unsigned char name[64]; /* W: ID (e.g. file name) */ 125 unsigned char __user *image; /* W: binary image */ 126 size_t length; /* W: size of image in bytes */ 127 unsigned long driver_data; /* W: driver-specific data */ 128}; 129 130#define SNDRV_HWDEP_IOCTL_PVERSION _IOR ('H', 0x00, int) 131#define SNDRV_HWDEP_IOCTL_INFO _IOR ('H', 0x01, struct snd_hwdep_info) 132#define SNDRV_HWDEP_IOCTL_DSP_STATUS _IOR('H', 0x02, struct snd_hwdep_dsp_status) 133#define SNDRV_HWDEP_IOCTL_DSP_LOAD _IOW('H', 0x03, struct snd_hwdep_dsp_image) 134 135/***************************************************************************** 136 * * 137 * Digital Audio (PCM) interface - /dev/snd/pcm?? * 138 * * 139 *****************************************************************************/ 140 141#define SNDRV_PCM_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 10) 142 143typedef unsigned long snd_pcm_uframes_t; 144typedef signed long snd_pcm_sframes_t; 145 146enum { 147 SNDRV_PCM_CLASS_GENERIC = 0, /* standard mono or stereo device */ 148 SNDRV_PCM_CLASS_MULTI, /* multichannel device */ 149 SNDRV_PCM_CLASS_MODEM, /* software modem class */ 150 SNDRV_PCM_CLASS_DIGITIZER, /* digitizer class */ 151 /* Don't forget to change the following: */ 152 SNDRV_PCM_CLASS_LAST = SNDRV_PCM_CLASS_DIGITIZER, 153}; 154 155enum { 156 SNDRV_PCM_SUBCLASS_GENERIC_MIX = 0, /* mono or stereo subdevices are mixed together */ 157 SNDRV_PCM_SUBCLASS_MULTI_MIX, /* multichannel subdevices are mixed together */ 158 /* Don't forget to change the following: */ 159 SNDRV_PCM_SUBCLASS_LAST = SNDRV_PCM_SUBCLASS_MULTI_MIX, 160}; 161 162enum { 163 SNDRV_PCM_STREAM_PLAYBACK = 0, 164 SNDRV_PCM_STREAM_CAPTURE, 165 SNDRV_PCM_STREAM_LAST = SNDRV_PCM_STREAM_CAPTURE, 166}; 167 168typedef int __bitwise snd_pcm_access_t; 169#define SNDRV_PCM_ACCESS_MMAP_INTERLEAVED ((__force snd_pcm_access_t) 0) /* interleaved mmap */ 170#define SNDRV_PCM_ACCESS_MMAP_NONINTERLEAVED ((__force snd_pcm_access_t) 1) /* noninterleaved mmap */ 171#define SNDRV_PCM_ACCESS_MMAP_COMPLEX ((__force snd_pcm_access_t) 2) /* complex mmap */ 172#define SNDRV_PCM_ACCESS_RW_INTERLEAVED ((__force snd_pcm_access_t) 3) /* readi/writei */ 173#define SNDRV_PCM_ACCESS_RW_NONINTERLEAVED ((__force snd_pcm_access_t) 4) /* readn/writen */ 174#define SNDRV_PCM_ACCESS_LAST SNDRV_PCM_ACCESS_RW_NONINTERLEAVED 175 176typedef int __bitwise snd_pcm_format_t; 177#define SNDRV_PCM_FORMAT_S8 ((__force snd_pcm_format_t) 0) 178#define SNDRV_PCM_FORMAT_U8 ((__force snd_pcm_format_t) 1) 179#define SNDRV_PCM_FORMAT_S16_LE ((__force snd_pcm_format_t) 2) 180#define SNDRV_PCM_FORMAT_S16_BE ((__force snd_pcm_format_t) 3) 181#define SNDRV_PCM_FORMAT_U16_LE ((__force snd_pcm_format_t) 4) 182#define SNDRV_PCM_FORMAT_U16_BE ((__force snd_pcm_format_t) 5) 183#define SNDRV_PCM_FORMAT_S24_LE ((__force snd_pcm_format_t) 6) /* low three bytes */ 184#define SNDRV_PCM_FORMAT_S24_BE ((__force snd_pcm_format_t) 7) /* low three bytes */ 185#define SNDRV_PCM_FORMAT_U24_LE ((__force snd_pcm_format_t) 8) /* low three bytes */ 186#define SNDRV_PCM_FORMAT_U24_BE ((__force snd_pcm_format_t) 9) /* low three bytes */ 187#define SNDRV_PCM_FORMAT_S32_LE ((__force snd_pcm_format_t) 10) 188#define SNDRV_PCM_FORMAT_S32_BE ((__force snd_pcm_format_t) 11) 189#define SNDRV_PCM_FORMAT_U32_LE ((__force snd_pcm_format_t) 12) 190#define SNDRV_PCM_FORMAT_U32_BE ((__force snd_pcm_format_t) 13) 191#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 */ 192#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 */ 193#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 */ 194#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 */ 195#define SNDRV_PCM_FORMAT_IEC958_SUBFRAME_LE ((__force snd_pcm_format_t) 18) /* IEC-958 subframe, Little Endian */ 196#define SNDRV_PCM_FORMAT_IEC958_SUBFRAME_BE ((__force snd_pcm_format_t) 19) /* IEC-958 subframe, Big Endian */ 197#define SNDRV_PCM_FORMAT_MU_LAW ((__force snd_pcm_format_t) 20) 198#define SNDRV_PCM_FORMAT_A_LAW ((__force snd_pcm_format_t) 21) 199#define SNDRV_PCM_FORMAT_IMA_ADPCM ((__force snd_pcm_format_t) 22) 200#define SNDRV_PCM_FORMAT_MPEG ((__force snd_pcm_format_t) 23) 201#define SNDRV_PCM_FORMAT_GSM ((__force snd_pcm_format_t) 24) 202#define SNDRV_PCM_FORMAT_SPECIAL ((__force snd_pcm_format_t) 31) 203#define SNDRV_PCM_FORMAT_S24_3LE ((__force snd_pcm_format_t) 32) /* in three bytes */ 204#define SNDRV_PCM_FORMAT_S24_3BE ((__force snd_pcm_format_t) 33) /* in three bytes */ 205#define SNDRV_PCM_FORMAT_U24_3LE ((__force snd_pcm_format_t) 34) /* in three bytes */ 206#define SNDRV_PCM_FORMAT_U24_3BE ((__force snd_pcm_format_t) 35) /* in three bytes */ 207#define SNDRV_PCM_FORMAT_S20_3LE ((__force snd_pcm_format_t) 36) /* in three bytes */ 208#define SNDRV_PCM_FORMAT_S20_3BE ((__force snd_pcm_format_t) 37) /* in three bytes */ 209#define SNDRV_PCM_FORMAT_U20_3LE ((__force snd_pcm_format_t) 38) /* in three bytes */ 210#define SNDRV_PCM_FORMAT_U20_3BE ((__force snd_pcm_format_t) 39) /* in three bytes */ 211#define SNDRV_PCM_FORMAT_S18_3LE ((__force snd_pcm_format_t) 40) /* in three bytes */ 212#define SNDRV_PCM_FORMAT_S18_3BE ((__force snd_pcm_format_t) 41) /* in three bytes */ 213#define SNDRV_PCM_FORMAT_U18_3LE ((__force snd_pcm_format_t) 42) /* in three bytes */ 214#define SNDRV_PCM_FORMAT_U18_3BE ((__force snd_pcm_format_t) 43) /* in three bytes */ 215#define SNDRV_PCM_FORMAT_LAST SNDRV_PCM_FORMAT_U18_3BE 216 217#ifdef SNDRV_LITTLE_ENDIAN 218#define SNDRV_PCM_FORMAT_S16 SNDRV_PCM_FORMAT_S16_LE 219#define SNDRV_PCM_FORMAT_U16 SNDRV_PCM_FORMAT_U16_LE 220#define SNDRV_PCM_FORMAT_S24 SNDRV_PCM_FORMAT_S24_LE 221#define SNDRV_PCM_FORMAT_U24 SNDRV_PCM_FORMAT_U24_LE 222#define SNDRV_PCM_FORMAT_S32 SNDRV_PCM_FORMAT_S32_LE 223#define SNDRV_PCM_FORMAT_U32 SNDRV_PCM_FORMAT_U32_LE 224#define SNDRV_PCM_FORMAT_FLOAT SNDRV_PCM_FORMAT_FLOAT_LE 225#define SNDRV_PCM_FORMAT_FLOAT64 SNDRV_PCM_FORMAT_FLOAT64_LE 226#define SNDRV_PCM_FORMAT_IEC958_SUBFRAME SNDRV_PCM_FORMAT_IEC958_SUBFRAME_LE 227#endif 228#ifdef SNDRV_BIG_ENDIAN 229#define SNDRV_PCM_FORMAT_S16 SNDRV_PCM_FORMAT_S16_BE 230#define SNDRV_PCM_FORMAT_U16 SNDRV_PCM_FORMAT_U16_BE 231#define SNDRV_PCM_FORMAT_S24 SNDRV_PCM_FORMAT_S24_BE 232#define SNDRV_PCM_FORMAT_U24 SNDRV_PCM_FORMAT_U24_BE 233#define SNDRV_PCM_FORMAT_S32 SNDRV_PCM_FORMAT_S32_BE 234#define SNDRV_PCM_FORMAT_U32 SNDRV_PCM_FORMAT_U32_BE 235#define SNDRV_PCM_FORMAT_FLOAT SNDRV_PCM_FORMAT_FLOAT_BE 236#define SNDRV_PCM_FORMAT_FLOAT64 SNDRV_PCM_FORMAT_FLOAT64_BE 237#define SNDRV_PCM_FORMAT_IEC958_SUBFRAME SNDRV_PCM_FORMAT_IEC958_SUBFRAME_BE 238#endif 239 240typedef int __bitwise snd_pcm_subformat_t; 241#define SNDRV_PCM_SUBFORMAT_STD ((__force snd_pcm_subformat_t) 0) 242#define SNDRV_PCM_SUBFORMAT_LAST SNDRV_PCM_SUBFORMAT_STD 243 244#define SNDRV_PCM_INFO_MMAP 0x00000001 /* hardware supports mmap */ 245#define SNDRV_PCM_INFO_MMAP_VALID 0x00000002 /* period data are valid during transfer */ 246#define SNDRV_PCM_INFO_DOUBLE 0x00000004 /* Double buffering needed for PCM start/stop */ 247#define SNDRV_PCM_INFO_BATCH 0x00000010 /* double buffering */ 248#define SNDRV_PCM_INFO_INTERLEAVED 0x00000100 /* channels are interleaved */ 249#define SNDRV_PCM_INFO_NONINTERLEAVED 0x00000200 /* channels are not interleaved */ 250#define SNDRV_PCM_INFO_COMPLEX 0x00000400 /* complex frame organization (mmap only) */ 251#define SNDRV_PCM_INFO_BLOCK_TRANSFER 0x00010000 /* hardware transfer block of samples */ 252#define SNDRV_PCM_INFO_OVERRANGE 0x00020000 /* hardware supports ADC (capture) overrange detection */ 253#define SNDRV_PCM_INFO_RESUME 0x00040000 /* hardware supports stream resume after suspend */ 254#define SNDRV_PCM_INFO_PAUSE 0x00080000 /* pause ioctl is supported */ 255#define SNDRV_PCM_INFO_HALF_DUPLEX 0x00100000 /* only half duplex */ 256#define SNDRV_PCM_INFO_JOINT_DUPLEX 0x00200000 /* playback and capture stream are somewhat correlated */ 257#define SNDRV_PCM_INFO_SYNC_START 0x00400000 /* pcm support some kind of sync go */ 258#define SNDRV_PCM_INFO_FIFO_IN_FRAMES 0x80000000 /* internal kernel flag - FIFO size is in frames */ 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 __u32 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 __kernel_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}; 453 454#define SNDRV_PCM_IOCTL_PVERSION _IOR('A', 0x00, int) 455#define SNDRV_PCM_IOCTL_INFO _IOR('A', 0x01, struct snd_pcm_info) 456#define SNDRV_PCM_IOCTL_TSTAMP _IOW('A', 0x02, int) 457#define SNDRV_PCM_IOCTL_TTSTAMP _IOW('A', 0x03, int) 458#define SNDRV_PCM_IOCTL_HW_REFINE _IOWR('A', 0x10, struct snd_pcm_hw_params) 459#define SNDRV_PCM_IOCTL_HW_PARAMS _IOWR('A', 0x11, struct snd_pcm_hw_params) 460#define SNDRV_PCM_IOCTL_HW_FREE _IO('A', 0x12) 461#define SNDRV_PCM_IOCTL_SW_PARAMS _IOWR('A', 0x13, struct snd_pcm_sw_params) 462#define SNDRV_PCM_IOCTL_STATUS _IOR('A', 0x20, struct snd_pcm_status) 463#define SNDRV_PCM_IOCTL_DELAY _IOR('A', 0x21, snd_pcm_sframes_t) 464#define SNDRV_PCM_IOCTL_HWSYNC _IO('A', 0x22) 465#define SNDRV_PCM_IOCTL_SYNC_PTR _IOWR('A', 0x23, struct snd_pcm_sync_ptr) 466#define SNDRV_PCM_IOCTL_CHANNEL_INFO _IOR('A', 0x32, struct snd_pcm_channel_info) 467#define SNDRV_PCM_IOCTL_PREPARE _IO('A', 0x40) 468#define SNDRV_PCM_IOCTL_RESET _IO('A', 0x41) 469#define SNDRV_PCM_IOCTL_START _IO('A', 0x42) 470#define SNDRV_PCM_IOCTL_DROP _IO('A', 0x43) 471#define SNDRV_PCM_IOCTL_DRAIN _IO('A', 0x44) 472#define SNDRV_PCM_IOCTL_PAUSE _IOW('A', 0x45, int) 473#define SNDRV_PCM_IOCTL_REWIND _IOW('A', 0x46, snd_pcm_uframes_t) 474#define SNDRV_PCM_IOCTL_RESUME _IO('A', 0x47) 475#define SNDRV_PCM_IOCTL_XRUN _IO('A', 0x48) 476#define SNDRV_PCM_IOCTL_FORWARD _IOW('A', 0x49, snd_pcm_uframes_t) 477#define SNDRV_PCM_IOCTL_WRITEI_FRAMES _IOW('A', 0x50, struct snd_xferi) 478#define SNDRV_PCM_IOCTL_READI_FRAMES _IOR('A', 0x51, struct snd_xferi) 479#define SNDRV_PCM_IOCTL_WRITEN_FRAMES _IOW('A', 0x52, struct snd_xfern) 480#define SNDRV_PCM_IOCTL_READN_FRAMES _IOR('A', 0x53, struct snd_xfern) 481#define SNDRV_PCM_IOCTL_LINK _IOW('A', 0x60, int) 482#define SNDRV_PCM_IOCTL_UNLINK _IO('A', 0x61) 483 484/***************************************************************************** 485 * * 486 * MIDI v1.0 interface * 487 * * 488 *****************************************************************************/ 489 490/* 491 * Raw MIDI section - /dev/snd/midi?? 492 */ 493 494#define SNDRV_RAWMIDI_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 0) 495 496enum { 497 SNDRV_RAWMIDI_STREAM_OUTPUT = 0, 498 SNDRV_RAWMIDI_STREAM_INPUT, 499 SNDRV_RAWMIDI_STREAM_LAST = SNDRV_RAWMIDI_STREAM_INPUT, 500}; 501 502#define SNDRV_RAWMIDI_INFO_OUTPUT 0x00000001 503#define SNDRV_RAWMIDI_INFO_INPUT 0x00000002 504#define SNDRV_RAWMIDI_INFO_DUPLEX 0x00000004 505 506struct snd_rawmidi_info { 507 unsigned int device; /* RO/WR (control): device number */ 508 unsigned int subdevice; /* RO/WR (control): subdevice number */ 509 int stream; /* WR: stream */ 510 int card; /* R: card number */ 511 unsigned int flags; /* SNDRV_RAWMIDI_INFO_XXXX */ 512 unsigned char id[64]; /* ID (user selectable) */ 513 unsigned char name[80]; /* name of device */ 514 unsigned char subname[32]; /* name of active or selected subdevice */ 515 unsigned int subdevices_count; 516 unsigned int subdevices_avail; 517 unsigned char reserved[64]; /* reserved for future use */ 518}; 519 520struct snd_rawmidi_params { 521 int stream; 522 size_t buffer_size; /* queue size in bytes */ 523 size_t avail_min; /* minimum avail bytes for wakeup */ 524 unsigned int no_active_sensing: 1; /* do not send active sensing byte in close() */ 525 unsigned char reserved[16]; /* reserved for future use */ 526}; 527 528struct snd_rawmidi_status { 529 int stream; 530 struct timespec tstamp; /* Timestamp */ 531 size_t avail; /* available bytes */ 532 size_t xruns; /* count of overruns since last status (in bytes) */ 533 unsigned char reserved[16]; /* reserved for future use */ 534}; 535 536#define SNDRV_RAWMIDI_IOCTL_PVERSION _IOR('W', 0x00, int) 537#define SNDRV_RAWMIDI_IOCTL_INFO _IOR('W', 0x01, struct snd_rawmidi_info) 538#define SNDRV_RAWMIDI_IOCTL_PARAMS _IOWR('W', 0x10, struct snd_rawmidi_params) 539#define SNDRV_RAWMIDI_IOCTL_STATUS _IOWR('W', 0x20, struct snd_rawmidi_status) 540#define SNDRV_RAWMIDI_IOCTL_DROP _IOW('W', 0x30, int) 541#define SNDRV_RAWMIDI_IOCTL_DRAIN _IOW('W', 0x31, int) 542 543/* 544 * Timer section - /dev/snd/timer 545 */ 546 547#define SNDRV_TIMER_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 5) 548 549enum { 550 SNDRV_TIMER_CLASS_NONE = -1, 551 SNDRV_TIMER_CLASS_SLAVE = 0, 552 SNDRV_TIMER_CLASS_GLOBAL, 553 SNDRV_TIMER_CLASS_CARD, 554 SNDRV_TIMER_CLASS_PCM, 555 SNDRV_TIMER_CLASS_LAST = SNDRV_TIMER_CLASS_PCM, 556}; 557 558/* slave timer classes */ 559enum { 560 SNDRV_TIMER_SCLASS_NONE = 0, 561 SNDRV_TIMER_SCLASS_APPLICATION, 562 SNDRV_TIMER_SCLASS_SEQUENCER, /* alias */ 563 SNDRV_TIMER_SCLASS_OSS_SEQUENCER, /* alias */ 564 SNDRV_TIMER_SCLASS_LAST = SNDRV_TIMER_SCLASS_OSS_SEQUENCER, 565}; 566 567/* global timers (device member) */ 568#define SNDRV_TIMER_GLOBAL_SYSTEM 0 569#define SNDRV_TIMER_GLOBAL_RTC 1 570#define SNDRV_TIMER_GLOBAL_HPET 2 571#define SNDRV_TIMER_GLOBAL_HRTIMER 3 572 573/* info flags */ 574#define SNDRV_TIMER_FLG_SLAVE (1<<0) /* cannot be controlled */ 575 576struct snd_timer_id { 577 int dev_class; 578 int dev_sclass; 579 int card; 580 int device; 581 int subdevice; 582}; 583 584struct snd_timer_ginfo { 585 struct snd_timer_id tid; /* requested timer ID */ 586 unsigned int flags; /* timer flags - SNDRV_TIMER_FLG_* */ 587 int card; /* card number */ 588 unsigned char id[64]; /* timer identification */ 589 unsigned char name[80]; /* timer name */ 590 unsigned long reserved0; /* reserved for future use */ 591 unsigned long resolution; /* average period resolution in ns */ 592 unsigned long resolution_min; /* minimal period resolution in ns */ 593 unsigned long resolution_max; /* maximal period resolution in ns */ 594 unsigned int clients; /* active timer clients */ 595 unsigned char reserved[32]; 596}; 597 598struct snd_timer_gparams { 599 struct snd_timer_id tid; /* requested timer ID */ 600 unsigned long period_num; /* requested precise period duration (in seconds) - numerator */ 601 unsigned long period_den; /* requested precise period duration (in seconds) - denominator */ 602 unsigned char reserved[32]; 603}; 604 605struct snd_timer_gstatus { 606 struct snd_timer_id tid; /* requested timer ID */ 607 unsigned long resolution; /* current period resolution in ns */ 608 unsigned long resolution_num; /* precise current period resolution (in seconds) - numerator */ 609 unsigned long resolution_den; /* precise current period resolution (in seconds) - denominator */ 610 unsigned char reserved[32]; 611}; 612 613struct snd_timer_select { 614 struct snd_timer_id id; /* bind to timer ID */ 615 unsigned char reserved[32]; /* reserved */ 616}; 617 618struct snd_timer_info { 619 unsigned int flags; /* timer flags - SNDRV_TIMER_FLG_* */ 620 int card; /* card number */ 621 unsigned char id[64]; /* timer identificator */ 622 unsigned char name[80]; /* timer name */ 623 unsigned long reserved0; /* reserved for future use */ 624 unsigned long resolution; /* average period resolution in ns */ 625 unsigned char reserved[64]; /* reserved */ 626}; 627 628#define SNDRV_TIMER_PSFLG_AUTO (1<<0) /* auto start, otherwise one-shot */ 629#define SNDRV_TIMER_PSFLG_EXCLUSIVE (1<<1) /* exclusive use, precise start/stop/pause/continue */ 630#define SNDRV_TIMER_PSFLG_EARLY_EVENT (1<<2) /* write early event to the poll queue */ 631 632struct snd_timer_params { 633 unsigned int flags; /* flags - SNDRV_MIXER_PSFLG_* */ 634 unsigned int ticks; /* requested resolution in ticks */ 635 unsigned int queue_size; /* total size of queue (32-1024) */ 636 unsigned int reserved0; /* reserved, was: failure locations */ 637 unsigned int filter; /* event filter (bitmask of SNDRV_TIMER_EVENT_*) */ 638 unsigned char reserved[60]; /* reserved */ 639}; 640 641struct snd_timer_status { 642 struct timespec tstamp; /* Timestamp - last update */ 643 unsigned int resolution; /* current period resolution in ns */ 644 unsigned int lost; /* counter of master tick lost */ 645 unsigned int overrun; /* count of read queue overruns */ 646 unsigned int queue; /* used queue size */ 647 unsigned char reserved[64]; /* reserved */ 648}; 649 650#define SNDRV_TIMER_IOCTL_PVERSION _IOR('T', 0x00, int) 651#define SNDRV_TIMER_IOCTL_NEXT_DEVICE _IOWR('T', 0x01, struct snd_timer_id) 652#define SNDRV_TIMER_IOCTL_TREAD _IOW('T', 0x02, int) 653#define SNDRV_TIMER_IOCTL_GINFO _IOWR('T', 0x03, struct snd_timer_ginfo) 654#define SNDRV_TIMER_IOCTL_GPARAMS _IOW('T', 0x04, struct snd_timer_gparams) 655#define SNDRV_TIMER_IOCTL_GSTATUS _IOWR('T', 0x05, struct snd_timer_gstatus) 656#define SNDRV_TIMER_IOCTL_SELECT _IOW('T', 0x10, struct snd_timer_select) 657#define SNDRV_TIMER_IOCTL_INFO _IOR('T', 0x11, struct snd_timer_info) 658#define SNDRV_TIMER_IOCTL_PARAMS _IOW('T', 0x12, struct snd_timer_params) 659#define SNDRV_TIMER_IOCTL_STATUS _IOR('T', 0x14, struct snd_timer_status) 660/* The following four ioctls are changed since 1.0.9 due to confliction */ 661#define SNDRV_TIMER_IOCTL_START _IO('T', 0xa0) 662#define SNDRV_TIMER_IOCTL_STOP _IO('T', 0xa1) 663#define SNDRV_TIMER_IOCTL_CONTINUE _IO('T', 0xa2) 664#define SNDRV_TIMER_IOCTL_PAUSE _IO('T', 0xa3) 665 666struct snd_timer_read { 667 unsigned int resolution; 668 unsigned int ticks; 669}; 670 671enum { 672 SNDRV_TIMER_EVENT_RESOLUTION = 0, /* val = resolution in ns */ 673 SNDRV_TIMER_EVENT_TICK, /* val = ticks */ 674 SNDRV_TIMER_EVENT_START, /* val = resolution in ns */ 675 SNDRV_TIMER_EVENT_STOP, /* val = 0 */ 676 SNDRV_TIMER_EVENT_CONTINUE, /* val = resolution in ns */ 677 SNDRV_TIMER_EVENT_PAUSE, /* val = 0 */ 678 SNDRV_TIMER_EVENT_EARLY, /* val = 0, early event */ 679 SNDRV_TIMER_EVENT_SUSPEND, /* val = 0 */ 680 SNDRV_TIMER_EVENT_RESUME, /* val = resolution in ns */ 681 /* master timer events for slave timer instances */ 682 SNDRV_TIMER_EVENT_MSTART = SNDRV_TIMER_EVENT_START + 10, 683 SNDRV_TIMER_EVENT_MSTOP = SNDRV_TIMER_EVENT_STOP + 10, 684 SNDRV_TIMER_EVENT_MCONTINUE = SNDRV_TIMER_EVENT_CONTINUE + 10, 685 SNDRV_TIMER_EVENT_MPAUSE = SNDRV_TIMER_EVENT_PAUSE + 10, 686 SNDRV_TIMER_EVENT_MSUSPEND = SNDRV_TIMER_EVENT_SUSPEND + 10, 687 SNDRV_TIMER_EVENT_MRESUME = SNDRV_TIMER_EVENT_RESUME + 10, 688}; 689 690struct snd_timer_tread { 691 int event; 692 struct timespec tstamp; 693 unsigned int val; 694}; 695 696/**************************************************************************** 697 * * 698 * Section for driver control interface - /dev/snd/control? * 699 * * 700 ****************************************************************************/ 701 702#define SNDRV_CTL_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 6) 703 704struct snd_ctl_card_info { 705 int card; /* card number */ 706 int pad; /* reserved for future (was type) */ 707 unsigned char id[16]; /* ID of card (user selectable) */ 708 unsigned char driver[16]; /* Driver name */ 709 unsigned char name[32]; /* Short name of soundcard */ 710 unsigned char longname[80]; /* name + info text about soundcard */ 711 unsigned char reserved_[16]; /* reserved for future (was ID of mixer) */ 712 unsigned char mixername[80]; /* visual mixer identification */ 713 unsigned char components[128]; /* card components / fine identification, delimited with one space (AC97 etc..) */ 714}; 715 716typedef int __bitwise snd_ctl_elem_type_t; 717#define SNDRV_CTL_ELEM_TYPE_NONE ((__force snd_ctl_elem_type_t) 0) /* invalid */ 718#define SNDRV_CTL_ELEM_TYPE_BOOLEAN ((__force snd_ctl_elem_type_t) 1) /* boolean type */ 719#define SNDRV_CTL_ELEM_TYPE_INTEGER ((__force snd_ctl_elem_type_t) 2) /* integer type */ 720#define SNDRV_CTL_ELEM_TYPE_ENUMERATED ((__force snd_ctl_elem_type_t) 3) /* enumerated type */ 721#define SNDRV_CTL_ELEM_TYPE_BYTES ((__force snd_ctl_elem_type_t) 4) /* byte array */ 722#define SNDRV_CTL_ELEM_TYPE_IEC958 ((__force snd_ctl_elem_type_t) 5) /* IEC958 (S/PDIF) setup */ 723#define SNDRV_CTL_ELEM_TYPE_INTEGER64 ((__force snd_ctl_elem_type_t) 6) /* 64-bit integer type */ 724#define SNDRV_CTL_ELEM_TYPE_LAST SNDRV_CTL_ELEM_TYPE_INTEGER64 725 726typedef int __bitwise snd_ctl_elem_iface_t; 727#define SNDRV_CTL_ELEM_IFACE_CARD ((__force snd_ctl_elem_iface_t) 0) /* global control */ 728#define SNDRV_CTL_ELEM_IFACE_HWDEP ((__force snd_ctl_elem_iface_t) 1) /* hardware dependent device */ 729#define SNDRV_CTL_ELEM_IFACE_MIXER ((__force snd_ctl_elem_iface_t) 2) /* virtual mixer device */ 730#define SNDRV_CTL_ELEM_IFACE_PCM ((__force snd_ctl_elem_iface_t) 3) /* PCM device */ 731#define SNDRV_CTL_ELEM_IFACE_RAWMIDI ((__force snd_ctl_elem_iface_t) 4) /* RawMidi device */ 732#define SNDRV_CTL_ELEM_IFACE_TIMER ((__force snd_ctl_elem_iface_t) 5) /* timer device */ 733#define SNDRV_CTL_ELEM_IFACE_SEQUENCER ((__force snd_ctl_elem_iface_t) 6) /* sequencer client */ 734#define SNDRV_CTL_ELEM_IFACE_LAST SNDRV_CTL_ELEM_IFACE_SEQUENCER 735 736#define SNDRV_CTL_ELEM_ACCESS_READ (1<<0) 737#define SNDRV_CTL_ELEM_ACCESS_WRITE (1<<1) 738#define SNDRV_CTL_ELEM_ACCESS_READWRITE (SNDRV_CTL_ELEM_ACCESS_READ|SNDRV_CTL_ELEM_ACCESS_WRITE) 739#define SNDRV_CTL_ELEM_ACCESS_VOLATILE (1<<2) /* control value may be changed without a notification */ 740#define SNDRV_CTL_ELEM_ACCESS_TIMESTAMP (1<<3) /* when was control changed */ 741#define SNDRV_CTL_ELEM_ACCESS_TLV_READ (1<<4) /* TLV read is possible */ 742#define SNDRV_CTL_ELEM_ACCESS_TLV_WRITE (1<<5) /* TLV write is possible */ 743#define SNDRV_CTL_ELEM_ACCESS_TLV_READWRITE (SNDRV_CTL_ELEM_ACCESS_TLV_READ|SNDRV_CTL_ELEM_ACCESS_TLV_WRITE) 744#define SNDRV_CTL_ELEM_ACCESS_TLV_COMMAND (1<<6) /* TLV command is possible */ 745#define SNDRV_CTL_ELEM_ACCESS_INACTIVE (1<<8) /* control does actually nothing, but may be updated */ 746#define SNDRV_CTL_ELEM_ACCESS_LOCK (1<<9) /* write lock */ 747#define SNDRV_CTL_ELEM_ACCESS_OWNER (1<<10) /* write lock owner */ 748#define SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK (1<<28) /* kernel use a TLV callback */ 749#define SNDRV_CTL_ELEM_ACCESS_USER (1<<29) /* user space element */ 750/* bits 30 and 31 are obsoleted (for indirect access) */ 751 752/* for further details see the ACPI and PCI power management specification */ 753#define SNDRV_CTL_POWER_D0 0x0000 /* full On */ 754#define SNDRV_CTL_POWER_D1 0x0100 /* partial On */ 755#define SNDRV_CTL_POWER_D2 0x0200 /* partial On */ 756#define SNDRV_CTL_POWER_D3 0x0300 /* Off */ 757#define SNDRV_CTL_POWER_D3hot (SNDRV_CTL_POWER_D3|0x0000) /* Off, with power */ 758#define SNDRV_CTL_POWER_D3cold (SNDRV_CTL_POWER_D3|0x0001) /* Off, without power */ 759 760struct snd_ctl_elem_id { 761 unsigned int numid; /* numeric identifier, zero = invalid */ 762 snd_ctl_elem_iface_t iface; /* interface identifier */ 763 unsigned int device; /* device/client number */ 764 unsigned int subdevice; /* subdevice (substream) number */ 765 unsigned char name[44]; /* ASCII name of item */ 766 unsigned int index; /* index of item */ 767}; 768 769struct snd_ctl_elem_list { 770 unsigned int offset; /* W: first element ID to get */ 771 unsigned int space; /* W: count of element IDs to get */ 772 unsigned int used; /* R: count of element IDs set */ 773 unsigned int count; /* R: count of all elements */ 774 struct snd_ctl_elem_id __user *pids; /* R: IDs */ 775 unsigned char reserved[50]; 776}; 777 778struct snd_ctl_elem_info { 779 struct snd_ctl_elem_id id; /* W: element ID */ 780 snd_ctl_elem_type_t type; /* R: value type - SNDRV_CTL_ELEM_TYPE_* */ 781 unsigned int access; /* R: value access (bitmask) - SNDRV_CTL_ELEM_ACCESS_* */ 782 unsigned int count; /* count of values */ 783 __kernel_pid_t owner; /* owner's PID of this control */ 784 union { 785 struct { 786 long min; /* R: minimum value */ 787 long max; /* R: maximum value */ 788 long step; /* R: step (0 variable) */ 789 } integer; 790 struct { 791 long long min; /* R: minimum value */ 792 long long max; /* R: maximum value */ 793 long long step; /* R: step (0 variable) */ 794 } integer64; 795 struct { 796 unsigned int items; /* R: number of items */ 797 unsigned int item; /* W: item number */ 798 char name[64]; /* R: value name */ 799 } enumerated; 800 unsigned char reserved[128]; 801 } value; 802 union { 803 unsigned short d[4]; /* dimensions */ 804 unsigned short *d_ptr; /* indirect - obsoleted */ 805 } dimen; 806 unsigned char reserved[64-4*sizeof(unsigned short)]; 807}; 808 809struct snd_ctl_elem_value { 810 struct snd_ctl_elem_id id; /* W: element ID */ 811 unsigned int indirect: 1; /* W: indirect access - obsoleted */ 812 union { 813 union { 814 long value[128]; 815 long *value_ptr; /* obsoleted */ 816 } integer; 817 union { 818 long long value[64]; 819 long long *value_ptr; /* obsoleted */ 820 } integer64; 821 union { 822 unsigned int item[128]; 823 unsigned int *item_ptr; /* obsoleted */ 824 } enumerated; 825 union { 826 unsigned char data[512]; 827 unsigned char *data_ptr; /* obsoleted */ 828 } bytes; 829 struct snd_aes_iec958 iec958; 830 } value; /* RO */ 831 struct timespec tstamp; 832 unsigned char reserved[128-sizeof(struct timespec)]; 833}; 834 835struct snd_ctl_tlv { 836 unsigned int numid; /* control element numeric identification */ 837 unsigned int length; /* in bytes aligned to 4 */ 838 unsigned int tlv[0]; /* first TLV */ 839}; 840 841#define SNDRV_CTL_IOCTL_PVERSION _IOR('U', 0x00, int) 842#define SNDRV_CTL_IOCTL_CARD_INFO _IOR('U', 0x01, struct snd_ctl_card_info) 843#define SNDRV_CTL_IOCTL_ELEM_LIST _IOWR('U', 0x10, struct snd_ctl_elem_list) 844#define SNDRV_CTL_IOCTL_ELEM_INFO _IOWR('U', 0x11, struct snd_ctl_elem_info) 845#define SNDRV_CTL_IOCTL_ELEM_READ _IOWR('U', 0x12, struct snd_ctl_elem_value) 846#define SNDRV_CTL_IOCTL_ELEM_WRITE _IOWR('U', 0x13, struct snd_ctl_elem_value) 847#define SNDRV_CTL_IOCTL_ELEM_LOCK _IOW('U', 0x14, struct snd_ctl_elem_id) 848#define SNDRV_CTL_IOCTL_ELEM_UNLOCK _IOW('U', 0x15, struct snd_ctl_elem_id) 849#define SNDRV_CTL_IOCTL_SUBSCRIBE_EVENTS _IOWR('U', 0x16, int) 850#define SNDRV_CTL_IOCTL_ELEM_ADD _IOWR('U', 0x17, struct snd_ctl_elem_info) 851#define SNDRV_CTL_IOCTL_ELEM_REPLACE _IOWR('U', 0x18, struct snd_ctl_elem_info) 852#define SNDRV_CTL_IOCTL_ELEM_REMOVE _IOWR('U', 0x19, struct snd_ctl_elem_id) 853#define SNDRV_CTL_IOCTL_TLV_READ _IOWR('U', 0x1a, struct snd_ctl_tlv) 854#define SNDRV_CTL_IOCTL_TLV_WRITE _IOWR('U', 0x1b, struct snd_ctl_tlv) 855#define SNDRV_CTL_IOCTL_TLV_COMMAND _IOWR('U', 0x1c, struct snd_ctl_tlv) 856#define SNDRV_CTL_IOCTL_HWDEP_NEXT_DEVICE _IOWR('U', 0x20, int) 857#define SNDRV_CTL_IOCTL_HWDEP_INFO _IOR('U', 0x21, struct snd_hwdep_info) 858#define SNDRV_CTL_IOCTL_PCM_NEXT_DEVICE _IOR('U', 0x30, int) 859#define SNDRV_CTL_IOCTL_PCM_INFO _IOWR('U', 0x31, struct snd_pcm_info) 860#define SNDRV_CTL_IOCTL_PCM_PREFER_SUBDEVICE _IOW('U', 0x32, int) 861#define SNDRV_CTL_IOCTL_RAWMIDI_NEXT_DEVICE _IOWR('U', 0x40, int) 862#define SNDRV_CTL_IOCTL_RAWMIDI_INFO _IOWR('U', 0x41, struct snd_rawmidi_info) 863#define SNDRV_CTL_IOCTL_RAWMIDI_PREFER_SUBDEVICE _IOW('U', 0x42, int) 864#define SNDRV_CTL_IOCTL_POWER _IOWR('U', 0xd0, int) 865#define SNDRV_CTL_IOCTL_POWER_STATE _IOR('U', 0xd1, int) 866 867/* 868 * Read interface. 869 */ 870 871enum sndrv_ctl_event_type { 872 SNDRV_CTL_EVENT_ELEM = 0, 873 SNDRV_CTL_EVENT_LAST = SNDRV_CTL_EVENT_ELEM, 874}; 875 876#define SNDRV_CTL_EVENT_MASK_VALUE (1<<0) /* element value was changed */ 877#define SNDRV_CTL_EVENT_MASK_INFO (1<<1) /* element info was changed */ 878#define SNDRV_CTL_EVENT_MASK_ADD (1<<2) /* element was added */ 879#define SNDRV_CTL_EVENT_MASK_TLV (1<<3) /* element TLV tree was changed */ 880#define SNDRV_CTL_EVENT_MASK_REMOVE (~0U) /* element was removed */ 881 882struct snd_ctl_event { 883 int type; /* event type - SNDRV_CTL_EVENT_* */ 884 union { 885 struct { 886 unsigned int mask; 887 struct snd_ctl_elem_id id; 888 } elem; 889 unsigned char data8[60]; 890 } data; 891}; 892 893/* 894 * Control names 895 */ 896 897#define SNDRV_CTL_NAME_NONE "" 898#define SNDRV_CTL_NAME_PLAYBACK "Playback " 899#define SNDRV_CTL_NAME_CAPTURE "Capture " 900 901#define SNDRV_CTL_NAME_IEC958_NONE "" 902#define SNDRV_CTL_NAME_IEC958_SWITCH "Switch" 903#define SNDRV_CTL_NAME_IEC958_VOLUME "Volume" 904#define SNDRV_CTL_NAME_IEC958_DEFAULT "Default" 905#define SNDRV_CTL_NAME_IEC958_MASK "Mask" 906#define SNDRV_CTL_NAME_IEC958_CON_MASK "Con Mask" 907#define SNDRV_CTL_NAME_IEC958_PRO_MASK "Pro Mask" 908#define SNDRV_CTL_NAME_IEC958_PCM_STREAM "PCM Stream" 909#define SNDRV_CTL_NAME_IEC958(expl,direction,what) "IEC958 " expl SNDRV_CTL_NAME_##direction SNDRV_CTL_NAME_IEC958_##what 910 911#endif /* __SOUND_ASOUND_H */ 912