asound.h revision 8aa9b586e42099817163aba01d925c2660c4dbbe
1/* 2 * Advanced Linux Sound Architecture - ALSA - Driver 3 * Copyright (c) 1994-2003 by Jaroslav Kysela <perex@suse.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 96 /* Don't forget to change the following: */ 97 SNDRV_HWDEP_IFACE_LAST = SNDRV_HWDEP_IFACE_SB_RC 98}; 99 100struct snd_hwdep_info { 101 unsigned int device; /* WR: device number */ 102 int card; /* R: card number */ 103 unsigned char id[64]; /* ID (user selectable) */ 104 unsigned char name[80]; /* hwdep name */ 105 int iface; /* hwdep interface */ 106 unsigned char reserved[64]; /* reserved for future */ 107}; 108 109/* generic DSP loader */ 110struct snd_hwdep_dsp_status { 111 unsigned int version; /* R: driver-specific version */ 112 unsigned char id[32]; /* R: driver-specific ID string */ 113 unsigned int num_dsps; /* R: number of DSP images to transfer */ 114 unsigned int dsp_loaded; /* R: bit flags indicating the loaded DSPs */ 115 unsigned int chip_ready; /* R: 1 = initialization finished */ 116 unsigned char reserved[16]; /* reserved for future use */ 117}; 118 119struct snd_hwdep_dsp_image { 120 unsigned int index; /* W: DSP index */ 121 unsigned char name[64]; /* W: ID (e.g. file name) */ 122 unsigned char __user *image; /* W: binary image */ 123 size_t length; /* W: size of image in bytes */ 124 unsigned long driver_data; /* W: driver-specific data */ 125}; 126 127enum { 128 SNDRV_HWDEP_IOCTL_PVERSION = _IOR ('H', 0x00, int), 129 SNDRV_HWDEP_IOCTL_INFO = _IOR ('H', 0x01, struct snd_hwdep_info), 130 SNDRV_HWDEP_IOCTL_DSP_STATUS = _IOR('H', 0x02, struct snd_hwdep_dsp_status), 131 SNDRV_HWDEP_IOCTL_DSP_LOAD = _IOW('H', 0x03, struct snd_hwdep_dsp_image) 132}; 133 134/***************************************************************************** 135 * * 136 * Digital Audio (PCM) interface - /dev/snd/pcm?? * 137 * * 138 *****************************************************************************/ 139 140#define SNDRV_PCM_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 8) 141 142typedef unsigned long snd_pcm_uframes_t; 143typedef signed long snd_pcm_sframes_t; 144 145enum { 146 SNDRV_PCM_CLASS_GENERIC = 0, /* standard mono or stereo device */ 147 SNDRV_PCM_CLASS_MULTI, /* multichannel device */ 148 SNDRV_PCM_CLASS_MODEM, /* software modem class */ 149 SNDRV_PCM_CLASS_DIGITIZER, /* digitizer class */ 150 /* Don't forget to change the following: */ 151 SNDRV_PCM_CLASS_LAST = SNDRV_PCM_CLASS_DIGITIZER, 152}; 153 154enum { 155 SNDRV_PCM_SUBCLASS_GENERIC_MIX = 0, /* mono or stereo subdevices are mixed together */ 156 SNDRV_PCM_SUBCLASS_MULTI_MIX, /* multichannel subdevices are mixed together */ 157 /* Don't forget to change the following: */ 158 SNDRV_PCM_SUBCLASS_LAST = SNDRV_PCM_SUBCLASS_MULTI_MIX, 159}; 160 161enum { 162 SNDRV_PCM_STREAM_PLAYBACK = 0, 163 SNDRV_PCM_STREAM_CAPTURE, 164 SNDRV_PCM_STREAM_LAST = SNDRV_PCM_STREAM_CAPTURE, 165}; 166 167typedef int __bitwise snd_pcm_access_t; 168#define SNDRV_PCM_ACCESS_MMAP_INTERLEAVED ((__force snd_pcm_access_t) 0) /* interleaved mmap */ 169#define SNDRV_PCM_ACCESS_MMAP_NONINTERLEAVED ((__force snd_pcm_access_t) 1) /* noninterleaved mmap */ 170#define SNDRV_PCM_ACCESS_MMAP_COMPLEX ((__force snd_pcm_access_t) 2) /* complex mmap */ 171#define SNDRV_PCM_ACCESS_RW_INTERLEAVED ((__force snd_pcm_access_t) 3) /* readi/writei */ 172#define SNDRV_PCM_ACCESS_RW_NONINTERLEAVED ((__force snd_pcm_access_t) 4) /* readn/writen */ 173#define SNDRV_PCM_ACCESS_LAST SNDRV_PCM_ACCESS_RW_NONINTERLEAVED 174 175typedef int __bitwise snd_pcm_format_t; 176#define SNDRV_PCM_FORMAT_S8 ((__force snd_pcm_format_t) 0) 177#define SNDRV_PCM_FORMAT_U8 ((__force snd_pcm_format_t) 1) 178#define SNDRV_PCM_FORMAT_S16_LE ((__force snd_pcm_format_t) 2) 179#define SNDRV_PCM_FORMAT_S16_BE ((__force snd_pcm_format_t) 3) 180#define SNDRV_PCM_FORMAT_U16_LE ((__force snd_pcm_format_t) 4) 181#define SNDRV_PCM_FORMAT_U16_BE ((__force snd_pcm_format_t) 5) 182#define SNDRV_PCM_FORMAT_S24_LE ((__force snd_pcm_format_t) 6) /* low three bytes */ 183#define SNDRV_PCM_FORMAT_S24_BE ((__force snd_pcm_format_t) 7) /* low three bytes */ 184#define SNDRV_PCM_FORMAT_U24_LE ((__force snd_pcm_format_t) 8) /* low three bytes */ 185#define SNDRV_PCM_FORMAT_U24_BE ((__force snd_pcm_format_t) 9) /* low three bytes */ 186#define SNDRV_PCM_FORMAT_S32_LE ((__force snd_pcm_format_t) 10) 187#define SNDRV_PCM_FORMAT_S32_BE ((__force snd_pcm_format_t) 11) 188#define SNDRV_PCM_FORMAT_U32_LE ((__force snd_pcm_format_t) 12) 189#define SNDRV_PCM_FORMAT_U32_BE ((__force snd_pcm_format_t) 13) 190#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 */ 191#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 */ 192#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 */ 193#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 */ 194#define SNDRV_PCM_FORMAT_IEC958_SUBFRAME_LE ((__force snd_pcm_format_t) 18) /* IEC-958 subframe, Little Endian */ 195#define SNDRV_PCM_FORMAT_IEC958_SUBFRAME_BE ((__force snd_pcm_format_t) 19) /* IEC-958 subframe, Big Endian */ 196#define SNDRV_PCM_FORMAT_MU_LAW ((__force snd_pcm_format_t) 20) 197#define SNDRV_PCM_FORMAT_A_LAW ((__force snd_pcm_format_t) 21) 198#define SNDRV_PCM_FORMAT_IMA_ADPCM ((__force snd_pcm_format_t) 22) 199#define SNDRV_PCM_FORMAT_MPEG ((__force snd_pcm_format_t) 23) 200#define SNDRV_PCM_FORMAT_GSM ((__force snd_pcm_format_t) 24) 201#define SNDRV_PCM_FORMAT_SPECIAL ((__force snd_pcm_format_t) 31) 202#define SNDRV_PCM_FORMAT_S24_3LE ((__force snd_pcm_format_t) 32) /* in three bytes */ 203#define SNDRV_PCM_FORMAT_S24_3BE ((__force snd_pcm_format_t) 33) /* in three bytes */ 204#define SNDRV_PCM_FORMAT_U24_3LE ((__force snd_pcm_format_t) 34) /* in three bytes */ 205#define SNDRV_PCM_FORMAT_U24_3BE ((__force snd_pcm_format_t) 35) /* in three bytes */ 206#define SNDRV_PCM_FORMAT_S20_3LE ((__force snd_pcm_format_t) 36) /* in three bytes */ 207#define SNDRV_PCM_FORMAT_S20_3BE ((__force snd_pcm_format_t) 37) /* in three bytes */ 208#define SNDRV_PCM_FORMAT_U20_3LE ((__force snd_pcm_format_t) 38) /* in three bytes */ 209#define SNDRV_PCM_FORMAT_U20_3BE ((__force snd_pcm_format_t) 39) /* in three bytes */ 210#define SNDRV_PCM_FORMAT_S18_3LE ((__force snd_pcm_format_t) 40) /* in three bytes */ 211#define SNDRV_PCM_FORMAT_S18_3BE ((__force snd_pcm_format_t) 41) /* in three bytes */ 212#define SNDRV_PCM_FORMAT_U18_3LE ((__force snd_pcm_format_t) 42) /* in three bytes */ 213#define SNDRV_PCM_FORMAT_U18_3BE ((__force snd_pcm_format_t) 43) /* in three bytes */ 214#define SNDRV_PCM_FORMAT_LAST SNDRV_PCM_FORMAT_U18_3BE 215 216#ifdef SNDRV_LITTLE_ENDIAN 217#define SNDRV_PCM_FORMAT_S16 SNDRV_PCM_FORMAT_S16_LE 218#define SNDRV_PCM_FORMAT_U16 SNDRV_PCM_FORMAT_U16_LE 219#define SNDRV_PCM_FORMAT_S24 SNDRV_PCM_FORMAT_S24_LE 220#define SNDRV_PCM_FORMAT_U24 SNDRV_PCM_FORMAT_U24_LE 221#define SNDRV_PCM_FORMAT_S32 SNDRV_PCM_FORMAT_S32_LE 222#define SNDRV_PCM_FORMAT_U32 SNDRV_PCM_FORMAT_U32_LE 223#define SNDRV_PCM_FORMAT_FLOAT SNDRV_PCM_FORMAT_FLOAT_LE 224#define SNDRV_PCM_FORMAT_FLOAT64 SNDRV_PCM_FORMAT_FLOAT64_LE 225#define SNDRV_PCM_FORMAT_IEC958_SUBFRAME SNDRV_PCM_FORMAT_IEC958_SUBFRAME_LE 226#endif 227#ifdef SNDRV_BIG_ENDIAN 228#define SNDRV_PCM_FORMAT_S16 SNDRV_PCM_FORMAT_S16_BE 229#define SNDRV_PCM_FORMAT_U16 SNDRV_PCM_FORMAT_U16_BE 230#define SNDRV_PCM_FORMAT_S24 SNDRV_PCM_FORMAT_S24_BE 231#define SNDRV_PCM_FORMAT_U24 SNDRV_PCM_FORMAT_U24_BE 232#define SNDRV_PCM_FORMAT_S32 SNDRV_PCM_FORMAT_S32_BE 233#define SNDRV_PCM_FORMAT_U32 SNDRV_PCM_FORMAT_U32_BE 234#define SNDRV_PCM_FORMAT_FLOAT SNDRV_PCM_FORMAT_FLOAT_BE 235#define SNDRV_PCM_FORMAT_FLOAT64 SNDRV_PCM_FORMAT_FLOAT64_BE 236#define SNDRV_PCM_FORMAT_IEC958_SUBFRAME SNDRV_PCM_FORMAT_IEC958_SUBFRAME_BE 237#endif 238 239typedef int __bitwise snd_pcm_subformat_t; 240#define SNDRV_PCM_SUBFORMAT_STD ((__force snd_pcm_subformat_t) 0) 241#define SNDRV_PCM_SUBFORMAT_LAST SNDRV_PCM_SUBFORMAT_STD 242 243#define SNDRV_PCM_INFO_MMAP 0x00000001 /* hardware supports mmap */ 244#define SNDRV_PCM_INFO_MMAP_VALID 0x00000002 /* period data are valid during transfer */ 245#define SNDRV_PCM_INFO_DOUBLE 0x00000004 /* Double buffering needed for PCM start/stop */ 246#define SNDRV_PCM_INFO_BATCH 0x00000010 /* double buffering */ 247#define SNDRV_PCM_INFO_INTERLEAVED 0x00000100 /* channels are interleaved */ 248#define SNDRV_PCM_INFO_NONINTERLEAVED 0x00000200 /* channels are not interleaved */ 249#define SNDRV_PCM_INFO_COMPLEX 0x00000400 /* complex frame organization (mmap only) */ 250#define SNDRV_PCM_INFO_BLOCK_TRANSFER 0x00010000 /* hardware transfer block of samples */ 251#define SNDRV_PCM_INFO_OVERRANGE 0x00020000 /* hardware supports ADC (capture) overrange detection */ 252#define SNDRV_PCM_INFO_RESUME 0x00040000 /* hardware supports stream resume after suspend */ 253#define SNDRV_PCM_INFO_PAUSE 0x00080000 /* pause ioctl is supported */ 254#define SNDRV_PCM_INFO_HALF_DUPLEX 0x00100000 /* only half duplex */ 255#define SNDRV_PCM_INFO_JOINT_DUPLEX 0x00200000 /* playback and capture stream are somewhat correlated */ 256#define SNDRV_PCM_INFO_SYNC_START 0x00400000 /* pcm support some kind of sync go */ 257 258typedef int __bitwise snd_pcm_state_t; 259#define SNDRV_PCM_STATE_OPEN ((__force snd_pcm_state_t) 0) /* stream is open */ 260#define SNDRV_PCM_STATE_SETUP ((__force snd_pcm_state_t) 1) /* stream has a setup */ 261#define SNDRV_PCM_STATE_PREPARED ((__force snd_pcm_state_t) 2) /* stream is ready to start */ 262#define SNDRV_PCM_STATE_RUNNING ((__force snd_pcm_state_t) 3) /* stream is running */ 263#define SNDRV_PCM_STATE_XRUN ((__force snd_pcm_state_t) 4) /* stream reached an xrun */ 264#define SNDRV_PCM_STATE_DRAINING ((__force snd_pcm_state_t) 5) /* stream is draining */ 265#define SNDRV_PCM_STATE_PAUSED ((__force snd_pcm_state_t) 6) /* stream is paused */ 266#define SNDRV_PCM_STATE_SUSPENDED ((__force snd_pcm_state_t) 7) /* hardware is suspended */ 267#define SNDRV_PCM_STATE_DISCONNECTED ((__force snd_pcm_state_t) 8) /* hardware is disconnected */ 268#define SNDRV_PCM_STATE_LAST SNDRV_PCM_STATE_DISCONNECTED 269 270enum { 271 SNDRV_PCM_MMAP_OFFSET_DATA = 0x00000000, 272 SNDRV_PCM_MMAP_OFFSET_STATUS = 0x80000000, 273 SNDRV_PCM_MMAP_OFFSET_CONTROL = 0x81000000, 274}; 275 276union snd_pcm_sync_id { 277 unsigned char id[16]; 278 unsigned short id16[8]; 279 unsigned int id32[4]; 280}; 281 282struct snd_pcm_info { 283 unsigned int device; /* RO/WR (control): device number */ 284 unsigned int subdevice; /* RO/WR (control): subdevice number */ 285 int stream; /* RO/WR (control): stream direction */ 286 int card; /* R: card number */ 287 unsigned char id[64]; /* ID (user selectable) */ 288 unsigned char name[80]; /* name of this device */ 289 unsigned char subname[32]; /* subdevice name */ 290 int dev_class; /* SNDRV_PCM_CLASS_* */ 291 int dev_subclass; /* SNDRV_PCM_SUBCLASS_* */ 292 unsigned int subdevices_count; 293 unsigned int subdevices_avail; 294 union snd_pcm_sync_id sync; /* hardware synchronization ID */ 295 unsigned char reserved[64]; /* reserved for future... */ 296}; 297 298typedef int __bitwise snd_pcm_hw_param_t; 299#define SNDRV_PCM_HW_PARAM_ACCESS ((__force snd_pcm_hw_param_t) 0) /* Access type */ 300#define SNDRV_PCM_HW_PARAM_FORMAT ((__force snd_pcm_hw_param_t) 1) /* Format */ 301#define SNDRV_PCM_HW_PARAM_SUBFORMAT ((__force snd_pcm_hw_param_t) 2) /* Subformat */ 302#define SNDRV_PCM_HW_PARAM_FIRST_MASK SNDRV_PCM_HW_PARAM_ACCESS 303#define SNDRV_PCM_HW_PARAM_LAST_MASK SNDRV_PCM_HW_PARAM_SUBFORMAT 304 305#define SNDRV_PCM_HW_PARAM_SAMPLE_BITS ((__force snd_pcm_hw_param_t) 8) /* Bits per sample */ 306#define SNDRV_PCM_HW_PARAM_FRAME_BITS ((__force snd_pcm_hw_param_t) 9) /* Bits per frame */ 307#define SNDRV_PCM_HW_PARAM_CHANNELS ((__force snd_pcm_hw_param_t) 10) /* Channels */ 308#define SNDRV_PCM_HW_PARAM_RATE ((__force snd_pcm_hw_param_t) 11) /* Approx rate */ 309#define SNDRV_PCM_HW_PARAM_PERIOD_TIME ((__force snd_pcm_hw_param_t) 12) /* Approx distance between interrupts in us */ 310#define SNDRV_PCM_HW_PARAM_PERIOD_SIZE ((__force snd_pcm_hw_param_t) 13) /* Approx frames between interrupts */ 311#define SNDRV_PCM_HW_PARAM_PERIOD_BYTES ((__force snd_pcm_hw_param_t) 14) /* Approx bytes between interrupts */ 312#define SNDRV_PCM_HW_PARAM_PERIODS ((__force snd_pcm_hw_param_t) 15) /* Approx interrupts per buffer */ 313#define SNDRV_PCM_HW_PARAM_BUFFER_TIME ((__force snd_pcm_hw_param_t) 16) /* Approx duration of buffer in us */ 314#define SNDRV_PCM_HW_PARAM_BUFFER_SIZE ((__force snd_pcm_hw_param_t) 17) /* Size of buffer in frames */ 315#define SNDRV_PCM_HW_PARAM_BUFFER_BYTES ((__force snd_pcm_hw_param_t) 18) /* Size of buffer in bytes */ 316#define SNDRV_PCM_HW_PARAM_TICK_TIME ((__force snd_pcm_hw_param_t) 19) /* Approx tick duration in us */ 317#define SNDRV_PCM_HW_PARAM_FIRST_INTERVAL SNDRV_PCM_HW_PARAM_SAMPLE_BITS 318#define SNDRV_PCM_HW_PARAM_LAST_INTERVAL SNDRV_PCM_HW_PARAM_TICK_TIME 319 320#define SNDRV_PCM_HW_PARAMS_NORESAMPLE (1<<0) /* avoid rate resampling */ 321 322struct snd_interval { 323 unsigned int min, max; 324 unsigned int openmin:1, 325 openmax:1, 326 integer:1, 327 empty:1; 328}; 329 330#define SNDRV_MASK_MAX 256 331 332struct snd_mask { 333 u_int32_t bits[(SNDRV_MASK_MAX+31)/32]; 334}; 335 336struct snd_pcm_hw_params { 337 unsigned int flags; 338 struct snd_mask masks[SNDRV_PCM_HW_PARAM_LAST_MASK - 339 SNDRV_PCM_HW_PARAM_FIRST_MASK + 1]; 340 struct snd_mask mres[5]; /* reserved masks */ 341 struct snd_interval intervals[SNDRV_PCM_HW_PARAM_LAST_INTERVAL - 342 SNDRV_PCM_HW_PARAM_FIRST_INTERVAL + 1]; 343 struct snd_interval ires[9]; /* reserved intervals */ 344 unsigned int rmask; /* W: requested masks */ 345 unsigned int cmask; /* R: changed masks */ 346 unsigned int info; /* R: Info flags for returned setup */ 347 unsigned int msbits; /* R: used most significant bits */ 348 unsigned int rate_num; /* R: rate numerator */ 349 unsigned int rate_den; /* R: rate denominator */ 350 snd_pcm_uframes_t fifo_size; /* R: chip FIFO size in frames */ 351 unsigned char reserved[64]; /* reserved for future */ 352}; 353 354enum { 355 SNDRV_PCM_TSTAMP_NONE = 0, 356 SNDRV_PCM_TSTAMP_MMAP, 357 SNDRV_PCM_TSTAMP_LAST = SNDRV_PCM_TSTAMP_MMAP, 358}; 359 360struct snd_pcm_sw_params { 361 int tstamp_mode; /* timestamp mode */ 362 unsigned int period_step; 363 unsigned int sleep_min; /* min ticks to sleep */ 364 snd_pcm_uframes_t avail_min; /* min avail frames for wakeup */ 365 snd_pcm_uframes_t xfer_align; /* xfer size need to be a multiple */ 366 snd_pcm_uframes_t start_threshold; /* min hw_avail frames for automatic start */ 367 snd_pcm_uframes_t stop_threshold; /* min avail frames for automatic stop */ 368 snd_pcm_uframes_t silence_threshold; /* min distance from noise for silence filling */ 369 snd_pcm_uframes_t silence_size; /* silence block size */ 370 snd_pcm_uframes_t boundary; /* pointers wrap point */ 371 unsigned char reserved[64]; /* reserved for future */ 372}; 373 374struct snd_pcm_channel_info { 375 unsigned int channel; 376 off_t offset; /* mmap offset */ 377 unsigned int first; /* offset to first sample in bits */ 378 unsigned int step; /* samples distance in bits */ 379}; 380 381struct snd_pcm_status { 382 snd_pcm_state_t state; /* stream state */ 383 struct timespec trigger_tstamp; /* time when stream was started/stopped/paused */ 384 struct timespec tstamp; /* reference timestamp */ 385 snd_pcm_uframes_t appl_ptr; /* appl ptr */ 386 snd_pcm_uframes_t hw_ptr; /* hw ptr */ 387 snd_pcm_sframes_t delay; /* current delay in frames */ 388 snd_pcm_uframes_t avail; /* number of frames available */ 389 snd_pcm_uframes_t avail_max; /* max frames available on hw since last status */ 390 snd_pcm_uframes_t overrange; /* count of ADC (capture) overrange detections from last status */ 391 snd_pcm_state_t suspended_state; /* suspended stream state */ 392 unsigned char reserved[60]; /* must be filled with zero */ 393}; 394 395struct snd_pcm_mmap_status { 396 snd_pcm_state_t state; /* RO: state - SNDRV_PCM_STATE_XXXX */ 397 int pad1; /* Needed for 64 bit alignment */ 398 snd_pcm_uframes_t hw_ptr; /* RO: hw ptr (0...boundary-1) */ 399 struct timespec tstamp; /* Timestamp */ 400 snd_pcm_state_t suspended_state; /* RO: suspended stream state */ 401}; 402 403struct snd_pcm_mmap_control { 404 snd_pcm_uframes_t appl_ptr; /* RW: appl ptr (0...boundary-1) */ 405 snd_pcm_uframes_t avail_min; /* RW: min available frames for wakeup */ 406}; 407 408#define SNDRV_PCM_SYNC_PTR_HWSYNC (1<<0) /* execute hwsync */ 409#define SNDRV_PCM_SYNC_PTR_APPL (1<<1) /* get appl_ptr from driver (r/w op) */ 410#define SNDRV_PCM_SYNC_PTR_AVAIL_MIN (1<<2) /* get avail_min from driver */ 411 412struct snd_pcm_sync_ptr { 413 unsigned int flags; 414 union { 415 struct snd_pcm_mmap_status status; 416 unsigned char reserved[64]; 417 } s; 418 union { 419 struct snd_pcm_mmap_control control; 420 unsigned char reserved[64]; 421 } c; 422}; 423 424struct snd_xferi { 425 snd_pcm_sframes_t result; 426 void __user *buf; 427 snd_pcm_uframes_t frames; 428}; 429 430struct snd_xfern { 431 snd_pcm_sframes_t result; 432 void __user * __user *bufs; 433 snd_pcm_uframes_t frames; 434}; 435 436enum { 437 SNDRV_PCM_IOCTL_PVERSION = _IOR('A', 0x00, int), 438 SNDRV_PCM_IOCTL_INFO = _IOR('A', 0x01, struct snd_pcm_info), 439 SNDRV_PCM_IOCTL_TSTAMP = _IOW('A', 0x02, int), 440 SNDRV_PCM_IOCTL_HW_REFINE = _IOWR('A', 0x10, struct snd_pcm_hw_params), 441 SNDRV_PCM_IOCTL_HW_PARAMS = _IOWR('A', 0x11, struct snd_pcm_hw_params), 442 SNDRV_PCM_IOCTL_HW_FREE = _IO('A', 0x12), 443 SNDRV_PCM_IOCTL_SW_PARAMS = _IOWR('A', 0x13, struct snd_pcm_sw_params), 444 SNDRV_PCM_IOCTL_STATUS = _IOR('A', 0x20, struct snd_pcm_status), 445 SNDRV_PCM_IOCTL_DELAY = _IOR('A', 0x21, snd_pcm_sframes_t), 446 SNDRV_PCM_IOCTL_HWSYNC = _IO('A', 0x22), 447 SNDRV_PCM_IOCTL_SYNC_PTR = _IOWR('A', 0x23, struct snd_pcm_sync_ptr), 448 SNDRV_PCM_IOCTL_CHANNEL_INFO = _IOR('A', 0x32, struct snd_pcm_channel_info), 449 SNDRV_PCM_IOCTL_PREPARE = _IO('A', 0x40), 450 SNDRV_PCM_IOCTL_RESET = _IO('A', 0x41), 451 SNDRV_PCM_IOCTL_START = _IO('A', 0x42), 452 SNDRV_PCM_IOCTL_DROP = _IO('A', 0x43), 453 SNDRV_PCM_IOCTL_DRAIN = _IO('A', 0x44), 454 SNDRV_PCM_IOCTL_PAUSE = _IOW('A', 0x45, int), 455 SNDRV_PCM_IOCTL_REWIND = _IOW('A', 0x46, snd_pcm_uframes_t), 456 SNDRV_PCM_IOCTL_RESUME = _IO('A', 0x47), 457 SNDRV_PCM_IOCTL_XRUN = _IO('A', 0x48), 458 SNDRV_PCM_IOCTL_FORWARD = _IOW('A', 0x49, snd_pcm_uframes_t), 459 SNDRV_PCM_IOCTL_WRITEI_FRAMES = _IOW('A', 0x50, struct snd_xferi), 460 SNDRV_PCM_IOCTL_READI_FRAMES = _IOR('A', 0x51, struct snd_xferi), 461 SNDRV_PCM_IOCTL_WRITEN_FRAMES = _IOW('A', 0x52, struct snd_xfern), 462 SNDRV_PCM_IOCTL_READN_FRAMES = _IOR('A', 0x53, struct snd_xfern), 463 SNDRV_PCM_IOCTL_LINK = _IOW('A', 0x60, int), 464 SNDRV_PCM_IOCTL_UNLINK = _IO('A', 0x61), 465}; 466 467/* Trick to make alsa-lib/acinclude.m4 happy */ 468#define SNDRV_PCM_IOCTL_REWIND SNDRV_PCM_IOCTL_REWIND 469 470/***************************************************************************** 471 * * 472 * MIDI v1.0 interface * 473 * * 474 *****************************************************************************/ 475 476/* 477 * Raw MIDI section - /dev/snd/midi?? 478 */ 479 480#define SNDRV_RAWMIDI_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 0) 481 482enum { 483 SNDRV_RAWMIDI_STREAM_OUTPUT = 0, 484 SNDRV_RAWMIDI_STREAM_INPUT, 485 SNDRV_RAWMIDI_STREAM_LAST = SNDRV_RAWMIDI_STREAM_INPUT, 486}; 487 488#define SNDRV_RAWMIDI_INFO_OUTPUT 0x00000001 489#define SNDRV_RAWMIDI_INFO_INPUT 0x00000002 490#define SNDRV_RAWMIDI_INFO_DUPLEX 0x00000004 491 492struct snd_rawmidi_info { 493 unsigned int device; /* RO/WR (control): device number */ 494 unsigned int subdevice; /* RO/WR (control): subdevice number */ 495 int stream; /* WR: stream */ 496 int card; /* R: card number */ 497 unsigned int flags; /* SNDRV_RAWMIDI_INFO_XXXX */ 498 unsigned char id[64]; /* ID (user selectable) */ 499 unsigned char name[80]; /* name of device */ 500 unsigned char subname[32]; /* name of active or selected subdevice */ 501 unsigned int subdevices_count; 502 unsigned int subdevices_avail; 503 unsigned char reserved[64]; /* reserved for future use */ 504}; 505 506struct snd_rawmidi_params { 507 int stream; 508 size_t buffer_size; /* queue size in bytes */ 509 size_t avail_min; /* minimum avail bytes for wakeup */ 510 unsigned int no_active_sensing: 1; /* do not send active sensing byte in close() */ 511 unsigned char reserved[16]; /* reserved for future use */ 512}; 513 514struct snd_rawmidi_status { 515 int stream; 516 struct timespec tstamp; /* Timestamp */ 517 size_t avail; /* available bytes */ 518 size_t xruns; /* count of overruns since last status (in bytes) */ 519 unsigned char reserved[16]; /* reserved for future use */ 520}; 521 522enum { 523 SNDRV_RAWMIDI_IOCTL_PVERSION = _IOR('W', 0x00, int), 524 SNDRV_RAWMIDI_IOCTL_INFO = _IOR('W', 0x01, struct snd_rawmidi_info), 525 SNDRV_RAWMIDI_IOCTL_PARAMS = _IOWR('W', 0x10, struct snd_rawmidi_params), 526 SNDRV_RAWMIDI_IOCTL_STATUS = _IOWR('W', 0x20, struct snd_rawmidi_status), 527 SNDRV_RAWMIDI_IOCTL_DROP = _IOW('W', 0x30, int), 528 SNDRV_RAWMIDI_IOCTL_DRAIN = _IOW('W', 0x31, int), 529}; 530 531/* 532 * Timer section - /dev/snd/timer 533 */ 534 535#define SNDRV_TIMER_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 5) 536 537enum { 538 SNDRV_TIMER_CLASS_NONE = -1, 539 SNDRV_TIMER_CLASS_SLAVE = 0, 540 SNDRV_TIMER_CLASS_GLOBAL, 541 SNDRV_TIMER_CLASS_CARD, 542 SNDRV_TIMER_CLASS_PCM, 543 SNDRV_TIMER_CLASS_LAST = SNDRV_TIMER_CLASS_PCM, 544}; 545 546/* slave timer classes */ 547enum { 548 SNDRV_TIMER_SCLASS_NONE = 0, 549 SNDRV_TIMER_SCLASS_APPLICATION, 550 SNDRV_TIMER_SCLASS_SEQUENCER, /* alias */ 551 SNDRV_TIMER_SCLASS_OSS_SEQUENCER, /* alias */ 552 SNDRV_TIMER_SCLASS_LAST = SNDRV_TIMER_SCLASS_OSS_SEQUENCER, 553}; 554 555/* global timers (device member) */ 556#define SNDRV_TIMER_GLOBAL_SYSTEM 0 557#define SNDRV_TIMER_GLOBAL_RTC 1 558#define SNDRV_TIMER_GLOBAL_HPET 2 559 560/* info flags */ 561#define SNDRV_TIMER_FLG_SLAVE (1<<0) /* cannot be controlled */ 562 563struct snd_timer_id { 564 int dev_class; 565 int dev_sclass; 566 int card; 567 int device; 568 int subdevice; 569}; 570 571struct snd_timer_ginfo { 572 struct snd_timer_id tid; /* requested timer ID */ 573 unsigned int flags; /* timer flags - SNDRV_TIMER_FLG_* */ 574 int card; /* card number */ 575 unsigned char id[64]; /* timer identification */ 576 unsigned char name[80]; /* timer name */ 577 unsigned long reserved0; /* reserved for future use */ 578 unsigned long resolution; /* average period resolution in ns */ 579 unsigned long resolution_min; /* minimal period resolution in ns */ 580 unsigned long resolution_max; /* maximal period resolution in ns */ 581 unsigned int clients; /* active timer clients */ 582 unsigned char reserved[32]; 583}; 584 585struct snd_timer_gparams { 586 struct snd_timer_id tid; /* requested timer ID */ 587 unsigned long period_num; /* requested precise period duration (in seconds) - numerator */ 588 unsigned long period_den; /* requested precise period duration (in seconds) - denominator */ 589 unsigned char reserved[32]; 590}; 591 592struct snd_timer_gstatus { 593 struct snd_timer_id tid; /* requested timer ID */ 594 unsigned long resolution; /* current period resolution in ns */ 595 unsigned long resolution_num; /* precise current period resolution (in seconds) - numerator */ 596 unsigned long resolution_den; /* precise current period resolution (in seconds) - denominator */ 597 unsigned char reserved[32]; 598}; 599 600struct snd_timer_select { 601 struct snd_timer_id id; /* bind to timer ID */ 602 unsigned char reserved[32]; /* reserved */ 603}; 604 605struct snd_timer_info { 606 unsigned int flags; /* timer flags - SNDRV_TIMER_FLG_* */ 607 int card; /* card number */ 608 unsigned char id[64]; /* timer identificator */ 609 unsigned char name[80]; /* timer name */ 610 unsigned long reserved0; /* reserved for future use */ 611 unsigned long resolution; /* average period resolution in ns */ 612 unsigned char reserved[64]; /* reserved */ 613}; 614 615#define SNDRV_TIMER_PSFLG_AUTO (1<<0) /* auto start, otherwise one-shot */ 616#define SNDRV_TIMER_PSFLG_EXCLUSIVE (1<<1) /* exclusive use, precise start/stop/pause/continue */ 617#define SNDRV_TIMER_PSFLG_EARLY_EVENT (1<<2) /* write early event to the poll queue */ 618 619struct snd_timer_params { 620 unsigned int flags; /* flags - SNDRV_MIXER_PSFLG_* */ 621 unsigned int ticks; /* requested resolution in ticks */ 622 unsigned int queue_size; /* total size of queue (32-1024) */ 623 unsigned int reserved0; /* reserved, was: failure locations */ 624 unsigned int filter; /* event filter (bitmask of SNDRV_TIMER_EVENT_*) */ 625 unsigned char reserved[60]; /* reserved */ 626}; 627 628struct snd_timer_status { 629 struct timespec tstamp; /* Timestamp - last update */ 630 unsigned int resolution; /* current period resolution in ns */ 631 unsigned int lost; /* counter of master tick lost */ 632 unsigned int overrun; /* count of read queue overruns */ 633 unsigned int queue; /* used queue size */ 634 unsigned char reserved[64]; /* reserved */ 635}; 636 637enum { 638 SNDRV_TIMER_IOCTL_PVERSION = _IOR('T', 0x00, int), 639 SNDRV_TIMER_IOCTL_NEXT_DEVICE = _IOWR('T', 0x01, struct snd_timer_id), 640 SNDRV_TIMER_IOCTL_TREAD = _IOW('T', 0x02, int), 641 SNDRV_TIMER_IOCTL_GINFO = _IOWR('T', 0x03, struct snd_timer_ginfo), 642 SNDRV_TIMER_IOCTL_GPARAMS = _IOW('T', 0x04, struct snd_timer_gparams), 643 SNDRV_TIMER_IOCTL_GSTATUS = _IOWR('T', 0x05, struct snd_timer_gstatus), 644 SNDRV_TIMER_IOCTL_SELECT = _IOW('T', 0x10, struct snd_timer_select), 645 SNDRV_TIMER_IOCTL_INFO = _IOR('T', 0x11, struct snd_timer_info), 646 SNDRV_TIMER_IOCTL_PARAMS = _IOW('T', 0x12, struct snd_timer_params), 647 SNDRV_TIMER_IOCTL_STATUS = _IOR('T', 0x14, struct snd_timer_status), 648 /* The following four ioctls are changed since 1.0.9 due to confliction */ 649 SNDRV_TIMER_IOCTL_START = _IO('T', 0xa0), 650 SNDRV_TIMER_IOCTL_STOP = _IO('T', 0xa1), 651 SNDRV_TIMER_IOCTL_CONTINUE = _IO('T', 0xa2), 652 SNDRV_TIMER_IOCTL_PAUSE = _IO('T', 0xa3), 653}; 654 655struct snd_timer_read { 656 unsigned int resolution; 657 unsigned int ticks; 658}; 659 660enum { 661 SNDRV_TIMER_EVENT_RESOLUTION = 0, /* val = resolution in ns */ 662 SNDRV_TIMER_EVENT_TICK, /* val = ticks */ 663 SNDRV_TIMER_EVENT_START, /* val = resolution in ns */ 664 SNDRV_TIMER_EVENT_STOP, /* val = 0 */ 665 SNDRV_TIMER_EVENT_CONTINUE, /* val = resolution in ns */ 666 SNDRV_TIMER_EVENT_PAUSE, /* val = 0 */ 667 SNDRV_TIMER_EVENT_EARLY, /* val = 0, early event */ 668 SNDRV_TIMER_EVENT_SUSPEND, /* val = 0 */ 669 SNDRV_TIMER_EVENT_RESUME, /* val = resolution in ns */ 670 /* master timer events for slave timer instances */ 671 SNDRV_TIMER_EVENT_MSTART = SNDRV_TIMER_EVENT_START + 10, 672 SNDRV_TIMER_EVENT_MSTOP = SNDRV_TIMER_EVENT_STOP + 10, 673 SNDRV_TIMER_EVENT_MCONTINUE = SNDRV_TIMER_EVENT_CONTINUE + 10, 674 SNDRV_TIMER_EVENT_MPAUSE = SNDRV_TIMER_EVENT_PAUSE + 10, 675 SNDRV_TIMER_EVENT_MSUSPEND = SNDRV_TIMER_EVENT_SUSPEND + 10, 676 SNDRV_TIMER_EVENT_MRESUME = SNDRV_TIMER_EVENT_RESUME + 10, 677}; 678 679struct snd_timer_tread { 680 int event; 681 struct timespec tstamp; 682 unsigned int val; 683}; 684 685/**************************************************************************** 686 * * 687 * Section for driver control interface - /dev/snd/control? * 688 * * 689 ****************************************************************************/ 690 691#define SNDRV_CTL_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 4) 692 693struct snd_ctl_card_info { 694 int card; /* card number */ 695 int pad; /* reserved for future (was type) */ 696 unsigned char id[16]; /* ID of card (user selectable) */ 697 unsigned char driver[16]; /* Driver name */ 698 unsigned char name[32]; /* Short name of soundcard */ 699 unsigned char longname[80]; /* name + info text about soundcard */ 700 unsigned char reserved_[16]; /* reserved for future (was ID of mixer) */ 701 unsigned char mixername[80]; /* visual mixer identification */ 702 unsigned char components[80]; /* card components / fine identification, delimited with one space (AC97 etc..) */ 703 unsigned char reserved[48]; /* reserved for future */ 704}; 705 706typedef int __bitwise snd_ctl_elem_type_t; 707#define SNDRV_CTL_ELEM_TYPE_NONE ((__force snd_ctl_elem_type_t) 0) /* invalid */ 708#define SNDRV_CTL_ELEM_TYPE_BOOLEAN ((__force snd_ctl_elem_type_t) 1) /* boolean type */ 709#define SNDRV_CTL_ELEM_TYPE_INTEGER ((__force snd_ctl_elem_type_t) 2) /* integer type */ 710#define SNDRV_CTL_ELEM_TYPE_ENUMERATED ((__force snd_ctl_elem_type_t) 3) /* enumerated type */ 711#define SNDRV_CTL_ELEM_TYPE_BYTES ((__force snd_ctl_elem_type_t) 4) /* byte array */ 712#define SNDRV_CTL_ELEM_TYPE_IEC958 ((__force snd_ctl_elem_type_t) 5) /* IEC958 (S/PDIF) setup */ 713#define SNDRV_CTL_ELEM_TYPE_INTEGER64 ((__force snd_ctl_elem_type_t) 6) /* 64-bit integer type */ 714#define SNDRV_CTL_ELEM_TYPE_LAST SNDRV_CTL_ELEM_TYPE_INTEGER64 715 716typedef int __bitwise snd_ctl_elem_iface_t; 717#define SNDRV_CTL_ELEM_IFACE_CARD ((__force snd_ctl_elem_iface_t) 0) /* global control */ 718#define SNDRV_CTL_ELEM_IFACE_HWDEP ((__force snd_ctl_elem_iface_t) 1) /* hardware dependent device */ 719#define SNDRV_CTL_ELEM_IFACE_MIXER ((__force snd_ctl_elem_iface_t) 2) /* virtual mixer device */ 720#define SNDRV_CTL_ELEM_IFACE_PCM ((__force snd_ctl_elem_iface_t) 3) /* PCM device */ 721#define SNDRV_CTL_ELEM_IFACE_RAWMIDI ((__force snd_ctl_elem_iface_t) 4) /* RawMidi device */ 722#define SNDRV_CTL_ELEM_IFACE_TIMER ((__force snd_ctl_elem_iface_t) 5) /* timer device */ 723#define SNDRV_CTL_ELEM_IFACE_SEQUENCER ((__force snd_ctl_elem_iface_t) 6) /* sequencer client */ 724#define SNDRV_CTL_ELEM_IFACE_LAST SNDRV_CTL_ELEM_IFACE_SEQUENCER 725 726#define SNDRV_CTL_ELEM_ACCESS_READ (1<<0) 727#define SNDRV_CTL_ELEM_ACCESS_WRITE (1<<1) 728#define SNDRV_CTL_ELEM_ACCESS_READWRITE (SNDRV_CTL_ELEM_ACCESS_READ|SNDRV_CTL_ELEM_ACCESS_WRITE) 729#define SNDRV_CTL_ELEM_ACCESS_VOLATILE (1<<2) /* control value may be changed without a notification */ 730#define SNDRV_CTL_ELEM_ACCESS_TIMESTAMP (1<<3) /* when was control changed */ 731#define SNDRV_CTL_ELEM_ACCESS_TLV_READ (1<<4) /* TLV read is possible */ 732#define SNDRV_CTL_ELEM_ACCESS_TLV_WRITE (1<<5) /* TLV write is possible */ 733#define SNDRV_CTL_ELEM_ACCESS_TLV_READWRITE (SNDRV_CTL_ELEM_ACCESS_TLV_READ|SNDRV_CTL_ELEM_ACCESS_TLV_WRITE) 734#define SNDRV_CTL_ELEM_ACCESS_TLV_COMMAND (1<<6) /* TLV command is possible */ 735#define SNDRV_CTL_ELEM_ACCESS_INACTIVE (1<<8) /* control does actually nothing, but may be updated */ 736#define SNDRV_CTL_ELEM_ACCESS_LOCK (1<<9) /* write lock */ 737#define SNDRV_CTL_ELEM_ACCESS_OWNER (1<<10) /* write lock owner */ 738#define SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK (1<<28) /* kernel use a TLV callback */ 739#define SNDRV_CTL_ELEM_ACCESS_USER (1<<29) /* user space element */ 740#define SNDRV_CTL_ELEM_ACCESS_DINDIRECT (1<<30) /* indirect access for matrix dimensions in the info structure */ 741#define SNDRV_CTL_ELEM_ACCESS_INDIRECT (1<<31) /* indirect access for element value in the value structure */ 742 743/* for further details see the ACPI and PCI power management specification */ 744#define SNDRV_CTL_POWER_D0 0x0000 /* full On */ 745#define SNDRV_CTL_POWER_D1 0x0100 /* partial On */ 746#define SNDRV_CTL_POWER_D2 0x0200 /* partial On */ 747#define SNDRV_CTL_POWER_D3 0x0300 /* Off */ 748#define SNDRV_CTL_POWER_D3hot (SNDRV_CTL_POWER_D3|0x0000) /* Off, with power */ 749#define SNDRV_CTL_POWER_D3cold (SNDRV_CTL_POWER_D3|0x0001) /* Off, without power */ 750 751struct snd_ctl_elem_id { 752 unsigned int numid; /* numeric identifier, zero = invalid */ 753 snd_ctl_elem_iface_t iface; /* interface identifier */ 754 unsigned int device; /* device/client number */ 755 unsigned int subdevice; /* subdevice (substream) number */ 756 unsigned char name[44]; /* ASCII name of item */ 757 unsigned int index; /* index of item */ 758}; 759 760struct snd_ctl_elem_list { 761 unsigned int offset; /* W: first element ID to get */ 762 unsigned int space; /* W: count of element IDs to get */ 763 unsigned int used; /* R: count of element IDs set */ 764 unsigned int count; /* R: count of all elements */ 765 struct snd_ctl_elem_id __user *pids; /* R: IDs */ 766 unsigned char reserved[50]; 767}; 768 769struct snd_ctl_elem_info { 770 struct snd_ctl_elem_id id; /* W: element ID */ 771 snd_ctl_elem_type_t type; /* R: value type - SNDRV_CTL_ELEM_TYPE_* */ 772 unsigned int access; /* R: value access (bitmask) - SNDRV_CTL_ELEM_ACCESS_* */ 773 unsigned int count; /* count of values */ 774 pid_t owner; /* owner's PID of this control */ 775 union { 776 struct { 777 long min; /* R: minimum value */ 778 long max; /* R: maximum value */ 779 long step; /* R: step (0 variable) */ 780 } integer; 781 struct { 782 long long min; /* R: minimum value */ 783 long long max; /* R: maximum value */ 784 long long step; /* R: step (0 variable) */ 785 } integer64; 786 struct { 787 unsigned int items; /* R: number of items */ 788 unsigned int item; /* W: item number */ 789 char name[64]; /* R: value name */ 790 } enumerated; 791 unsigned char reserved[128]; 792 } value; 793 union { 794 unsigned short d[4]; /* dimensions */ 795 unsigned short *d_ptr; /* indirect */ 796 } dimen; 797 unsigned char reserved[64-4*sizeof(unsigned short)]; 798}; 799 800struct snd_ctl_elem_value { 801 struct snd_ctl_elem_id id; /* W: element ID */ 802 unsigned int indirect: 1; /* W: use indirect pointer (xxx_ptr member) */ 803 union { 804 union { 805 long value[128]; 806 long *value_ptr; 807 } integer; 808 union { 809 long long value[64]; 810 long long *value_ptr; 811 } integer64; 812 union { 813 unsigned int item[128]; 814 unsigned int *item_ptr; 815 } enumerated; 816 union { 817 unsigned char data[512]; 818 unsigned char *data_ptr; 819 } bytes; 820 struct snd_aes_iec958 iec958; 821 } value; /* RO */ 822 struct timespec tstamp; 823 unsigned char reserved[128-sizeof(struct timespec)]; 824}; 825 826struct snd_ctl_tlv { 827 unsigned int numid; /* control element numeric identification */ 828 unsigned int length; /* in bytes aligned to 4 */ 829 unsigned int tlv[0]; /* first TLV */ 830}; 831 832enum { 833 SNDRV_CTL_IOCTL_PVERSION = _IOR('U', 0x00, int), 834 SNDRV_CTL_IOCTL_CARD_INFO = _IOR('U', 0x01, struct snd_ctl_card_info), 835 SNDRV_CTL_IOCTL_ELEM_LIST = _IOWR('U', 0x10, struct snd_ctl_elem_list), 836 SNDRV_CTL_IOCTL_ELEM_INFO = _IOWR('U', 0x11, struct snd_ctl_elem_info), 837 SNDRV_CTL_IOCTL_ELEM_READ = _IOWR('U', 0x12, struct snd_ctl_elem_value), 838 SNDRV_CTL_IOCTL_ELEM_WRITE = _IOWR('U', 0x13, struct snd_ctl_elem_value), 839 SNDRV_CTL_IOCTL_ELEM_LOCK = _IOW('U', 0x14, struct snd_ctl_elem_id), 840 SNDRV_CTL_IOCTL_ELEM_UNLOCK = _IOW('U', 0x15, struct snd_ctl_elem_id), 841 SNDRV_CTL_IOCTL_SUBSCRIBE_EVENTS = _IOWR('U', 0x16, int), 842 SNDRV_CTL_IOCTL_ELEM_ADD = _IOWR('U', 0x17, struct snd_ctl_elem_info), 843 SNDRV_CTL_IOCTL_ELEM_REPLACE = _IOWR('U', 0x18, struct snd_ctl_elem_info), 844 SNDRV_CTL_IOCTL_ELEM_REMOVE = _IOWR('U', 0x19, struct snd_ctl_elem_id), 845 SNDRV_CTL_IOCTL_TLV_READ = _IOWR('U', 0x1a, struct snd_ctl_tlv), 846 SNDRV_CTL_IOCTL_TLV_WRITE = _IOWR('U', 0x1b, struct snd_ctl_tlv), 847 SNDRV_CTL_IOCTL_TLV_COMMAND = _IOWR('U', 0x1c, struct snd_ctl_tlv), 848 SNDRV_CTL_IOCTL_HWDEP_NEXT_DEVICE = _IOWR('U', 0x20, int), 849 SNDRV_CTL_IOCTL_HWDEP_INFO = _IOR('U', 0x21, struct snd_hwdep_info), 850 SNDRV_CTL_IOCTL_PCM_NEXT_DEVICE = _IOR('U', 0x30, int), 851 SNDRV_CTL_IOCTL_PCM_INFO = _IOWR('U', 0x31, struct snd_pcm_info), 852 SNDRV_CTL_IOCTL_PCM_PREFER_SUBDEVICE = _IOW('U', 0x32, int), 853 SNDRV_CTL_IOCTL_RAWMIDI_NEXT_DEVICE = _IOWR('U', 0x40, int), 854 SNDRV_CTL_IOCTL_RAWMIDI_INFO = _IOWR('U', 0x41, struct snd_rawmidi_info), 855 SNDRV_CTL_IOCTL_RAWMIDI_PREFER_SUBDEVICE = _IOW('U', 0x42, int), 856 SNDRV_CTL_IOCTL_POWER = _IOWR('U', 0xd0, int), 857 SNDRV_CTL_IOCTL_POWER_STATE = _IOR('U', 0xd1, int), 858}; 859 860/* 861 * Read interface. 862 */ 863 864enum sndrv_ctl_event_type { 865 SNDRV_CTL_EVENT_ELEM = 0, 866 SNDRV_CTL_EVENT_LAST = SNDRV_CTL_EVENT_ELEM, 867}; 868 869#define SNDRV_CTL_EVENT_MASK_VALUE (1<<0) /* element value was changed */ 870#define SNDRV_CTL_EVENT_MASK_INFO (1<<1) /* element info was changed */ 871#define SNDRV_CTL_EVENT_MASK_ADD (1<<2) /* element was added */ 872#define SNDRV_CTL_EVENT_MASK_TLV (1<<3) /* element TLV tree was changed */ 873#define SNDRV_CTL_EVENT_MASK_REMOVE (~0U) /* element was removed */ 874 875struct snd_ctl_event { 876 int type; /* event type - SNDRV_CTL_EVENT_* */ 877 union { 878 struct { 879 unsigned int mask; 880 struct snd_ctl_elem_id id; 881 } elem; 882 unsigned char data8[60]; 883 } data; 884}; 885 886/* 887 * Control names 888 */ 889 890#define SNDRV_CTL_NAME_NONE "" 891#define SNDRV_CTL_NAME_PLAYBACK "Playback " 892#define SNDRV_CTL_NAME_CAPTURE "Capture " 893 894#define SNDRV_CTL_NAME_IEC958_NONE "" 895#define SNDRV_CTL_NAME_IEC958_SWITCH "Switch" 896#define SNDRV_CTL_NAME_IEC958_VOLUME "Volume" 897#define SNDRV_CTL_NAME_IEC958_DEFAULT "Default" 898#define SNDRV_CTL_NAME_IEC958_MASK "Mask" 899#define SNDRV_CTL_NAME_IEC958_CON_MASK "Con Mask" 900#define SNDRV_CTL_NAME_IEC958_PRO_MASK "Pro Mask" 901#define SNDRV_CTL_NAME_IEC958_PCM_STREAM "PCM Stream" 902#define SNDRV_CTL_NAME_IEC958(expl,direction,what) "IEC958 " expl SNDRV_CTL_NAME_##direction SNDRV_CTL_NAME_IEC958_##what 903 904/* 905 * 906 */ 907 908struct snd_xferv { 909 const struct iovec *vector; 910 unsigned long count; 911}; 912 913enum { 914 SNDRV_IOCTL_READV = _IOW('K', 0x00, struct snd_xferv), 915 SNDRV_IOCTL_WRITEV = _IOW('K', 0x01, struct snd_xferv), 916}; 917 918#endif /* __SOUND_ASOUND_H */ 919