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The C and C++ Include Header Files
/usr/include/sound/asound.h
$ cat -n /usr/include/sound/asound.h 1 /* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */ 2 /* 3 * Advanced Linux Sound Architecture - ALSA - Driver 4 * Copyright (c) 1994-2003 by Jaroslav Kysela <perex@perex.cz>, 5 * Abramo Bagnara <abramo@alsa-project.org> 6 */ 7 8 #ifndef __SOUND_ASOUND_H 9 #define __SOUND_ASOUND_H 10 11 #if defined(__KERNEL__) || defined(__linux__) 12 #include <linux/types.h> 13 #include <asm/byteorder.h> 14 #else 15 #include <endian.h> 16 #include <sys/ioctl.h> 17 #endif 18 19 #include <stdlib.h> 20 #include <time.h> 21 22 /* 23 * protocol version 24 */ 25 26 #define SNDRV_PROTOCOL_VERSION(major, minor, subminor) (((major)<<16)|((minor)<<8)|(subminor)) 27 #define SNDRV_PROTOCOL_MAJOR(version) (((version)>>16)&0xffff) 28 #define SNDRV_PROTOCOL_MINOR(version) (((version)>>8)&0xff) 29 #define SNDRV_PROTOCOL_MICRO(version) ((version)&0xff) 30 #define SNDRV_PROTOCOL_INCOMPATIBLE(kversion, uversion) \ 31 (SNDRV_PROTOCOL_MAJOR(kversion) != SNDRV_PROTOCOL_MAJOR(uversion) || \ 32 (SNDRV_PROTOCOL_MAJOR(kversion) == SNDRV_PROTOCOL_MAJOR(uversion) && \ 33 SNDRV_PROTOCOL_MINOR(kversion) != SNDRV_PROTOCOL_MINOR(uversion))) 34 35 /**************************************************************************** 36 * * 37 * Digital audio interface * 38 * * 39 ****************************************************************************/ 40 41 #define AES_IEC958_STATUS_SIZE 24 42 43 struct snd_aes_iec958 { 44 unsigned char status[AES_IEC958_STATUS_SIZE]; /* AES/IEC958 channel status bits */ 45 unsigned char subcode[147]; /* AES/IEC958 subcode bits */ 46 unsigned char pad; /* nothing */ 47 unsigned char dig_subframe[4]; /* AES/IEC958 subframe bits */ 48 }; 49 50 /**************************************************************************** 51 * * 52 * CEA-861 Audio InfoFrame. Used in HDMI and DisplayPort * 53 * * 54 ****************************************************************************/ 55 56 struct snd_cea_861_aud_if { 57 unsigned char db1_ct_cc; /* coding type and channel count */ 58 unsigned char db2_sf_ss; /* sample frequency and size */ 59 unsigned char db3; /* not used, all zeros */ 60 unsigned char db4_ca; /* channel allocation code */ 61 unsigned char db5_dminh_lsv; /* downmix inhibit & level-shit values */ 62 }; 63 64 /**************************************************************************** 65 * * 66 * Section for driver hardware dependent interface - /dev/snd/hw? * 67 * * 68 ****************************************************************************/ 69 70 #define SNDRV_HWDEP_VERSION SNDRV_PROTOCOL_VERSION(1, 0, 1) 71 72 enum { 73 SNDRV_HWDEP_IFACE_OPL2 = 0, 74 SNDRV_HWDEP_IFACE_OPL3, 75 SNDRV_HWDEP_IFACE_OPL4, 76 SNDRV_HWDEP_IFACE_SB16CSP, /* Creative Signal Processor */ 77 SNDRV_HWDEP_IFACE_EMU10K1, /* FX8010 processor in EMU10K1 chip */ 78 SNDRV_HWDEP_IFACE_YSS225, /* Yamaha FX processor */ 79 SNDRV_HWDEP_IFACE_ICS2115, /* Wavetable synth */ 80 SNDRV_HWDEP_IFACE_SSCAPE, /* Ensoniq SoundScape ISA card (MC68EC000) */ 81 SNDRV_HWDEP_IFACE_VX, /* Digigram VX cards */ 82 SNDRV_HWDEP_IFACE_MIXART, /* Digigram miXart cards */ 83 SNDRV_HWDEP_IFACE_USX2Y, /* Tascam US122, US224 & US428 usb */ 84 SNDRV_HWDEP_IFACE_EMUX_WAVETABLE, /* EmuX wavetable */ 85 SNDRV_HWDEP_IFACE_BLUETOOTH, /* Bluetooth audio */ 86 SNDRV_HWDEP_IFACE_USX2Y_PCM, /* Tascam US122, US224 & US428 rawusb pcm */ 87 SNDRV_HWDEP_IFACE_PCXHR, /* Digigram PCXHR */ 88 SNDRV_HWDEP_IFACE_SB_RC, /* SB Extigy/Audigy2NX remote control */ 89 SNDRV_HWDEP_IFACE_HDA, /* HD-audio */ 90 SNDRV_HWDEP_IFACE_USB_STREAM, /* direct access to usb stream */ 91 SNDRV_HWDEP_IFACE_FW_DICE, /* TC DICE FireWire device */ 92 SNDRV_HWDEP_IFACE_FW_FIREWORKS, /* Echo Audio Fireworks based device */ 93 SNDRV_HWDEP_IFACE_FW_BEBOB, /* BridgeCo BeBoB based device */ 94 SNDRV_HWDEP_IFACE_FW_OXFW, /* Oxford OXFW970/971 based device */ 95 SNDRV_HWDEP_IFACE_FW_DIGI00X, /* Digidesign Digi 002/003 family */ 96 SNDRV_HWDEP_IFACE_FW_TASCAM, /* TASCAM FireWire series */ 97 SNDRV_HWDEP_IFACE_LINE6, /* Line6 USB processors */ 98 SNDRV_HWDEP_IFACE_FW_MOTU, /* MOTU FireWire series */ 99 SNDRV_HWDEP_IFACE_FW_FIREFACE, /* RME Fireface series */ 100 101 /* Don't forget to change the following: */ 102 SNDRV_HWDEP_IFACE_LAST = SNDRV_HWDEP_IFACE_FW_FIREFACE 103 }; 104 105 struct snd_hwdep_info { 106 unsigned int device; /* WR: device number */ 107 int card; /* R: card number */ 108 unsigned char id[64]; /* ID (user selectable) */ 109 unsigned char name[80]; /* hwdep name */ 110 int iface; /* hwdep interface */ 111 unsigned char reserved[64]; /* reserved for future */ 112 }; 113 114 /* generic DSP loader */ 115 struct snd_hwdep_dsp_status { 116 unsigned int version; /* R: driver-specific version */ 117 unsigned char id[32]; /* R: driver-specific ID string */ 118 unsigned int num_dsps; /* R: number of DSP images to transfer */ 119 unsigned int dsp_loaded; /* R: bit flags indicating the loaded DSPs */ 120 unsigned int chip_ready; /* R: 1 = initialization finished */ 121 unsigned char reserved[16]; /* reserved for future use */ 122 }; 123 124 struct snd_hwdep_dsp_image { 125 unsigned int index; /* W: DSP index */ 126 unsigned char name[64]; /* W: ID (e.g. file name) */ 127 unsigned char *image; /* W: binary image */ 128 size_t length; /* W: size of image in bytes */ 129 unsigned long driver_data; /* W: driver-specific data */ 130 }; 131 132 #define SNDRV_HWDEP_IOCTL_PVERSION _IOR ('H', 0x00, int) 133 #define SNDRV_HWDEP_IOCTL_INFO _IOR ('H', 0x01, struct snd_hwdep_info) 134 #define SNDRV_HWDEP_IOCTL_DSP_STATUS _IOR('H', 0x02, struct snd_hwdep_dsp_status) 135 #define SNDRV_HWDEP_IOCTL_DSP_LOAD _IOW('H', 0x03, struct snd_hwdep_dsp_image) 136 137 /***************************************************************************** 138 * * 139 * Digital Audio (PCM) interface - /dev/snd/pcm?? * 140 * * 141 *****************************************************************************/ 142 143 #define SNDRV_PCM_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 17) 144 145 typedef unsigned long snd_pcm_uframes_t; 146 typedef signed long snd_pcm_sframes_t; 147 148 enum { 149 SNDRV_PCM_CLASS_GENERIC = 0, /* standard mono or stereo device */ 150 SNDRV_PCM_CLASS_MULTI, /* multichannel device */ 151 SNDRV_PCM_CLASS_MODEM, /* software modem class */ 152 SNDRV_PCM_CLASS_DIGITIZER, /* digitizer class */ 153 /* Don't forget to change the following: */ 154 SNDRV_PCM_CLASS_LAST = SNDRV_PCM_CLASS_DIGITIZER, 155 }; 156 157 enum { 158 SNDRV_PCM_SUBCLASS_GENERIC_MIX = 0, /* mono or stereo subdevices are mixed together */ 159 SNDRV_PCM_SUBCLASS_MULTI_MIX, /* multichannel subdevices are mixed together */ 160 /* Don't forget to change the following: */ 161 SNDRV_PCM_SUBCLASS_LAST = SNDRV_PCM_SUBCLASS_MULTI_MIX, 162 }; 163 164 enum { 165 SNDRV_PCM_STREAM_PLAYBACK = 0, 166 SNDRV_PCM_STREAM_CAPTURE, 167 SNDRV_PCM_STREAM_LAST = SNDRV_PCM_STREAM_CAPTURE, 168 }; 169 170 typedef int __bitwise snd_pcm_access_t; 171 #define SNDRV_PCM_ACCESS_MMAP_INTERLEAVED ((snd_pcm_access_t) 0) /* interleaved mmap */ 172 #define SNDRV_PCM_ACCESS_MMAP_NONINTERLEAVED ((snd_pcm_access_t) 1) /* noninterleaved mmap */ 173 #define SNDRV_PCM_ACCESS_MMAP_COMPLEX ((snd_pcm_access_t) 2) /* complex mmap */ 174 #define SNDRV_PCM_ACCESS_RW_INTERLEAVED ((snd_pcm_access_t) 3) /* readi/writei */ 175 #define SNDRV_PCM_ACCESS_RW_NONINTERLEAVED ((snd_pcm_access_t) 4) /* readn/writen */ 176 #define SNDRV_PCM_ACCESS_LAST SNDRV_PCM_ACCESS_RW_NONINTERLEAVED 177 178 typedef int __bitwise snd_pcm_format_t; 179 #define SNDRV_PCM_FORMAT_S8 ((snd_pcm_format_t) 0) 180 #define SNDRV_PCM_FORMAT_U8 ((snd_pcm_format_t) 1) 181 #define SNDRV_PCM_FORMAT_S16_LE ((snd_pcm_format_t) 2) 182 #define SNDRV_PCM_FORMAT_S16_BE ((snd_pcm_format_t) 3) 183 #define SNDRV_PCM_FORMAT_U16_LE ((snd_pcm_format_t) 4) 184 #define SNDRV_PCM_FORMAT_U16_BE ((snd_pcm_format_t) 5) 185 #define SNDRV_PCM_FORMAT_S24_LE ((snd_pcm_format_t) 6) /* low three bytes */ 186 #define SNDRV_PCM_FORMAT_S24_BE ((snd_pcm_format_t) 7) /* low three bytes */ 187 #define SNDRV_PCM_FORMAT_U24_LE ((snd_pcm_format_t) 8) /* low three bytes */ 188 #define SNDRV_PCM_FORMAT_U24_BE ((snd_pcm_format_t) 9) /* low three bytes */ 189 /* 190 * For S32/U32 formats, 'msbits' hardware parameter is often used to deliver information about the 191 * available bit count in most significant bit. It's for the case of so-called 'left-justified' or 192 * `right-padding` sample which has less width than 32 bit. 193 */ 194 #define SNDRV_PCM_FORMAT_S32_LE ((snd_pcm_format_t) 10) 195 #define SNDRV_PCM_FORMAT_S32_BE ((snd_pcm_format_t) 11) 196 #define SNDRV_PCM_FORMAT_U32_LE ((snd_pcm_format_t) 12) 197 #define SNDRV_PCM_FORMAT_U32_BE ((snd_pcm_format_t) 13) 198 #define SNDRV_PCM_FORMAT_FLOAT_LE ((snd_pcm_format_t) 14) /* 4-byte float, IEEE-754 32-bit, range -1.0 to 1.0 */ 199 #define SNDRV_PCM_FORMAT_FLOAT_BE ((snd_pcm_format_t) 15) /* 4-byte float, IEEE-754 32-bit, range -1.0 to 1.0 */ 200 #define SNDRV_PCM_FORMAT_FLOAT64_LE ((snd_pcm_format_t) 16) /* 8-byte float, IEEE-754 64-bit, range -1.0 to 1.0 */ 201 #define SNDRV_PCM_FORMAT_FLOAT64_BE ((snd_pcm_format_t) 17) /* 8-byte float, IEEE-754 64-bit, range -1.0 to 1.0 */ 202 #define SNDRV_PCM_FORMAT_IEC958_SUBFRAME_LE ((snd_pcm_format_t) 18) /* IEC-958 subframe, Little Endian */ 203 #define SNDRV_PCM_FORMAT_IEC958_SUBFRAME_BE ((snd_pcm_format_t) 19) /* IEC-958 subframe, Big Endian */ 204 #define SNDRV_PCM_FORMAT_MU_LAW ((snd_pcm_format_t) 20) 205 #define SNDRV_PCM_FORMAT_A_LAW ((snd_pcm_format_t) 21) 206 #define SNDRV_PCM_FORMAT_IMA_ADPCM ((snd_pcm_format_t) 22) 207 #define SNDRV_PCM_FORMAT_MPEG ((snd_pcm_format_t) 23) 208 #define SNDRV_PCM_FORMAT_GSM ((snd_pcm_format_t) 24) 209 #define SNDRV_PCM_FORMAT_S20_LE ((snd_pcm_format_t) 25) /* in four bytes, LSB justified */ 210 #define SNDRV_PCM_FORMAT_S20_BE ((snd_pcm_format_t) 26) /* in four bytes, LSB justified */ 211 #define SNDRV_PCM_FORMAT_U20_LE ((snd_pcm_format_t) 27) /* in four bytes, LSB justified */ 212 #define SNDRV_PCM_FORMAT_U20_BE ((snd_pcm_format_t) 28) /* in four bytes, LSB justified */ 213 /* gap in the numbering for a future standard linear format */ 214 #define SNDRV_PCM_FORMAT_SPECIAL ((snd_pcm_format_t) 31) 215 #define SNDRV_PCM_FORMAT_S24_3LE ((snd_pcm_format_t) 32) /* in three bytes */ 216 #define SNDRV_PCM_FORMAT_S24_3BE ((snd_pcm_format_t) 33) /* in three bytes */ 217 #define SNDRV_PCM_FORMAT_U24_3LE ((snd_pcm_format_t) 34) /* in three bytes */ 218 #define SNDRV_PCM_FORMAT_U24_3BE ((snd_pcm_format_t) 35) /* in three bytes */ 219 #define SNDRV_PCM_FORMAT_S20_3LE ((snd_pcm_format_t) 36) /* in three bytes */ 220 #define SNDRV_PCM_FORMAT_S20_3BE ((snd_pcm_format_t) 37) /* in three bytes */ 221 #define SNDRV_PCM_FORMAT_U20_3LE ((snd_pcm_format_t) 38) /* in three bytes */ 222 #define SNDRV_PCM_FORMAT_U20_3BE ((snd_pcm_format_t) 39) /* in three bytes */ 223 #define SNDRV_PCM_FORMAT_S18_3LE ((snd_pcm_format_t) 40) /* in three bytes */ 224 #define SNDRV_PCM_FORMAT_S18_3BE ((snd_pcm_format_t) 41) /* in three bytes */ 225 #define SNDRV_PCM_FORMAT_U18_3LE ((snd_pcm_format_t) 42) /* in three bytes */ 226 #define SNDRV_PCM_FORMAT_U18_3BE ((snd_pcm_format_t) 43) /* in three bytes */ 227 #define SNDRV_PCM_FORMAT_G723_24 ((snd_pcm_format_t) 44) /* 8 samples in 3 bytes */ 228 #define SNDRV_PCM_FORMAT_G723_24_1B ((snd_pcm_format_t) 45) /* 1 sample in 1 byte */ 229 #define SNDRV_PCM_FORMAT_G723_40 ((snd_pcm_format_t) 46) /* 8 Samples in 5 bytes */ 230 #define SNDRV_PCM_FORMAT_G723_40_1B ((snd_pcm_format_t) 47) /* 1 sample in 1 byte */ 231 #define SNDRV_PCM_FORMAT_DSD_U8 ((snd_pcm_format_t) 48) /* DSD, 1-byte samples DSD (x8) */ 232 #define SNDRV_PCM_FORMAT_DSD_U16_LE ((snd_pcm_format_t) 49) /* DSD, 2-byte samples DSD (x16), little endian */ 233 #define SNDRV_PCM_FORMAT_DSD_U32_LE ((snd_pcm_format_t) 50) /* DSD, 4-byte samples DSD (x32), little endian */ 234 #define SNDRV_PCM_FORMAT_DSD_U16_BE ((snd_pcm_format_t) 51) /* DSD, 2-byte samples DSD (x16), big endian */ 235 #define SNDRV_PCM_FORMAT_DSD_U32_BE ((snd_pcm_format_t) 52) /* DSD, 4-byte samples DSD (x32), big endian */ 236 #define SNDRV_PCM_FORMAT_LAST SNDRV_PCM_FORMAT_DSD_U32_BE 237 #define SNDRV_PCM_FORMAT_FIRST SNDRV_PCM_FORMAT_S8 238 239 #ifdef SNDRV_LITTLE_ENDIAN 240 #define SNDRV_PCM_FORMAT_S16 SNDRV_PCM_FORMAT_S16_LE 241 #define SNDRV_PCM_FORMAT_U16 SNDRV_PCM_FORMAT_U16_LE 242 #define SNDRV_PCM_FORMAT_S24 SNDRV_PCM_FORMAT_S24_LE 243 #define SNDRV_PCM_FORMAT_U24 SNDRV_PCM_FORMAT_U24_LE 244 #define SNDRV_PCM_FORMAT_S32 SNDRV_PCM_FORMAT_S32_LE 245 #define SNDRV_PCM_FORMAT_U32 SNDRV_PCM_FORMAT_U32_LE 246 #define SNDRV_PCM_FORMAT_FLOAT SNDRV_PCM_FORMAT_FLOAT_LE 247 #define SNDRV_PCM_FORMAT_FLOAT64 SNDRV_PCM_FORMAT_FLOAT64_LE 248 #define SNDRV_PCM_FORMAT_IEC958_SUBFRAME SNDRV_PCM_FORMAT_IEC958_SUBFRAME_LE 249 #define SNDRV_PCM_FORMAT_S20 SNDRV_PCM_FORMAT_S20_LE 250 #define SNDRV_PCM_FORMAT_U20 SNDRV_PCM_FORMAT_U20_LE 251 #endif 252 #ifdef SNDRV_BIG_ENDIAN 253 #define SNDRV_PCM_FORMAT_S16 SNDRV_PCM_FORMAT_S16_BE 254 #define SNDRV_PCM_FORMAT_U16 SNDRV_PCM_FORMAT_U16_BE 255 #define SNDRV_PCM_FORMAT_S24 SNDRV_PCM_FORMAT_S24_BE 256 #define SNDRV_PCM_FORMAT_U24 SNDRV_PCM_FORMAT_U24_BE 257 #define SNDRV_PCM_FORMAT_S32 SNDRV_PCM_FORMAT_S32_BE 258 #define SNDRV_PCM_FORMAT_U32 SNDRV_PCM_FORMAT_U32_BE 259 #define SNDRV_PCM_FORMAT_FLOAT SNDRV_PCM_FORMAT_FLOAT_BE 260 #define SNDRV_PCM_FORMAT_FLOAT64 SNDRV_PCM_FORMAT_FLOAT64_BE 261 #define SNDRV_PCM_FORMAT_IEC958_SUBFRAME SNDRV_PCM_FORMAT_IEC958_SUBFRAME_BE 262 #define SNDRV_PCM_FORMAT_S20 SNDRV_PCM_FORMAT_S20_BE 263 #define SNDRV_PCM_FORMAT_U20 SNDRV_PCM_FORMAT_U20_BE 264 #endif 265 266 typedef int __bitwise snd_pcm_subformat_t; 267 #define SNDRV_PCM_SUBFORMAT_STD ((snd_pcm_subformat_t) 0) 268 #define SNDRV_PCM_SUBFORMAT_MSBITS_MAX ((snd_pcm_subformat_t) 1) 269 #define SNDRV_PCM_SUBFORMAT_MSBITS_20 ((snd_pcm_subformat_t) 2) 270 #define SNDRV_PCM_SUBFORMAT_MSBITS_24 ((snd_pcm_subformat_t) 3) 271 #define SNDRV_PCM_SUBFORMAT_LAST SNDRV_PCM_SUBFORMAT_MSBITS_24 272 273 #define SNDRV_PCM_INFO_MMAP 0x00000001 /* hardware supports mmap */ 274 #define SNDRV_PCM_INFO_MMAP_VALID 0x00000002 /* period data are valid during transfer */ 275 #define SNDRV_PCM_INFO_DOUBLE 0x00000004 /* Double buffering needed for PCM start/stop */ 276 #define SNDRV_PCM_INFO_BATCH 0x00000010 /* double buffering */ 277 #define SNDRV_PCM_INFO_SYNC_APPLPTR 0x00000020 /* need the explicit sync of appl_ptr update */ 278 #define SNDRV_PCM_INFO_PERFECT_DRAIN 0x00000040 /* silencing at the end of stream is not required */ 279 #define SNDRV_PCM_INFO_INTERLEAVED 0x00000100 /* channels are interleaved */ 280 #define SNDRV_PCM_INFO_NONINTERLEAVED 0x00000200 /* channels are not interleaved */ 281 #define SNDRV_PCM_INFO_COMPLEX 0x00000400 /* complex frame organization (mmap only) */ 282 #define SNDRV_PCM_INFO_BLOCK_TRANSFER 0x00010000 /* hardware transfer block of samples */ 283 #define SNDRV_PCM_INFO_OVERRANGE 0x00020000 /* hardware supports ADC (capture) overrange detection */ 284 #define SNDRV_PCM_INFO_RESUME 0x00040000 /* hardware supports stream resume after suspend */ 285 #define SNDRV_PCM_INFO_PAUSE 0x00080000 /* pause ioctl is supported */ 286 #define SNDRV_PCM_INFO_HALF_DUPLEX 0x00100000 /* only half duplex */ 287 #define SNDRV_PCM_INFO_JOINT_DUPLEX 0x00200000 /* playback and capture stream are somewhat correlated */ 288 #define SNDRV_PCM_INFO_SYNC_START 0x00400000 /* pcm support some kind of sync go */ 289 #define SNDRV_PCM_INFO_NO_PERIOD_WAKEUP 0x00800000 /* period wakeup can be disabled */ 290 #define SNDRV_PCM_INFO_HAS_WALL_CLOCK 0x01000000 /* (Deprecated)has audio wall clock for audio/system time sync */ 291 #define SNDRV_PCM_INFO_HAS_LINK_ATIME 0x01000000 /* report hardware link audio time, reset on startup */ 292 #define SNDRV_PCM_INFO_HAS_LINK_ABSOLUTE_ATIME 0x02000000 /* report absolute hardware link audio time, not reset on startup */ 293 #define SNDRV_PCM_INFO_HAS_LINK_ESTIMATED_ATIME 0x04000000 /* report estimated link audio time */ 294 #define SNDRV_PCM_INFO_HAS_LINK_SYNCHRONIZED_ATIME 0x08000000 /* report synchronized audio/system time */ 295 #define SNDRV_PCM_INFO_EXPLICIT_SYNC 0x10000000 /* needs explicit sync of pointers and data */ 296 #define SNDRV_PCM_INFO_NO_REWINDS 0x20000000 /* hardware can only support monotonic changes of appl_ptr */ 297 #define SNDRV_PCM_INFO_DRAIN_TRIGGER 0x40000000 /* internal kernel flag - trigger in drain */ 298 #define SNDRV_PCM_INFO_FIFO_IN_FRAMES 0x80000000 /* internal kernel flag - FIFO size is in frames */ 299 300 #if (__BITS_PER_LONG == 32 && defined(__USE_TIME_BITS64)) || defined __KERNEL__ 301 #define __SND_STRUCT_TIME64 302 #endif 303 304 typedef int __bitwise snd_pcm_state_t; 305 #define SNDRV_PCM_STATE_OPEN ((snd_pcm_state_t) 0) /* stream is open */ 306 #define SNDRV_PCM_STATE_SETUP ((snd_pcm_state_t) 1) /* stream has a setup */ 307 #define SNDRV_PCM_STATE_PREPARED ((snd_pcm_state_t) 2) /* stream is ready to start */ 308 #define SNDRV_PCM_STATE_RUNNING ((snd_pcm_state_t) 3) /* stream is running */ 309 #define SNDRV_PCM_STATE_XRUN ((snd_pcm_state_t) 4) /* stream reached an xrun */ 310 #define SNDRV_PCM_STATE_DRAINING ((snd_pcm_state_t) 5) /* stream is draining */ 311 #define SNDRV_PCM_STATE_PAUSED ((snd_pcm_state_t) 6) /* stream is paused */ 312 #define SNDRV_PCM_STATE_SUSPENDED ((snd_pcm_state_t) 7) /* hardware is suspended */ 313 #define SNDRV_PCM_STATE_DISCONNECTED ((snd_pcm_state_t) 8) /* hardware is disconnected */ 314 #define SNDRV_PCM_STATE_LAST SNDRV_PCM_STATE_DISCONNECTED 315 316 enum { 317 SNDRV_PCM_MMAP_OFFSET_DATA = 0x00000000, 318 SNDRV_PCM_MMAP_OFFSET_STATUS_OLD = 0x80000000, 319 SNDRV_PCM_MMAP_OFFSET_CONTROL_OLD = 0x81000000, 320 SNDRV_PCM_MMAP_OFFSET_STATUS_NEW = 0x82000000, 321 SNDRV_PCM_MMAP_OFFSET_CONTROL_NEW = 0x83000000, 322 #ifdef __SND_STRUCT_TIME64 323 SNDRV_PCM_MMAP_OFFSET_STATUS = SNDRV_PCM_MMAP_OFFSET_STATUS_NEW, 324 SNDRV_PCM_MMAP_OFFSET_CONTROL = SNDRV_PCM_MMAP_OFFSET_CONTROL_NEW, 325 #else 326 SNDRV_PCM_MMAP_OFFSET_STATUS = SNDRV_PCM_MMAP_OFFSET_STATUS_OLD, 327 SNDRV_PCM_MMAP_OFFSET_CONTROL = SNDRV_PCM_MMAP_OFFSET_CONTROL_OLD, 328 #endif 329 }; 330 331 union snd_pcm_sync_id { 332 unsigned char id[16]; 333 unsigned short id16[8]; 334 unsigned int id32[4]; 335 }; 336 337 struct snd_pcm_info { 338 unsigned int device; /* RO/WR (control): device number */ 339 unsigned int subdevice; /* RO/WR (control): subdevice number */ 340 int stream; /* RO/WR (control): stream direction */ 341 int card; /* R: card number */ 342 unsigned char id[64]; /* ID (user selectable) */ 343 unsigned char name[80]; /* name of this device */ 344 unsigned char subname[32]; /* subdevice name */ 345 int dev_class; /* SNDRV_PCM_CLASS_* */ 346 int dev_subclass; /* SNDRV_PCM_SUBCLASS_* */ 347 unsigned int subdevices_count; 348 unsigned int subdevices_avail; 349 union snd_pcm_sync_id sync; /* hardware synchronization ID */ 350 unsigned char reserved[64]; /* reserved for future... */ 351 }; 352 353 typedef int snd_pcm_hw_param_t; 354 #define SNDRV_PCM_HW_PARAM_ACCESS 0 /* Access type */ 355 #define SNDRV_PCM_HW_PARAM_FORMAT 1 /* Format */ 356 #define SNDRV_PCM_HW_PARAM_SUBFORMAT 2 /* Subformat */ 357 #define SNDRV_PCM_HW_PARAM_FIRST_MASK SNDRV_PCM_HW_PARAM_ACCESS 358 #define SNDRV_PCM_HW_PARAM_LAST_MASK SNDRV_PCM_HW_PARAM_SUBFORMAT 359 360 #define SNDRV_PCM_HW_PARAM_SAMPLE_BITS 8 /* Bits per sample */ 361 #define SNDRV_PCM_HW_PARAM_FRAME_BITS 9 /* Bits per frame */ 362 #define SNDRV_PCM_HW_PARAM_CHANNELS 10 /* Channels */ 363 #define SNDRV_PCM_HW_PARAM_RATE 11 /* Approx rate */ 364 #define SNDRV_PCM_HW_PARAM_PERIOD_TIME 12 /* Approx distance between 365 * interrupts in us 366 */ 367 #define SNDRV_PCM_HW_PARAM_PERIOD_SIZE 13 /* Approx frames between 368 * interrupts 369 */ 370 #define SNDRV_PCM_HW_PARAM_PERIOD_BYTES 14 /* Approx bytes between 371 * interrupts 372 */ 373 #define SNDRV_PCM_HW_PARAM_PERIODS 15 /* Approx interrupts per 374 * buffer 375 */ 376 #define SNDRV_PCM_HW_PARAM_BUFFER_TIME 16 /* Approx duration of buffer 377 * in us 378 */ 379 #define SNDRV_PCM_HW_PARAM_BUFFER_SIZE 17 /* Size of buffer in frames */ 380 #define SNDRV_PCM_HW_PARAM_BUFFER_BYTES 18 /* Size of buffer in bytes */ 381 #define SNDRV_PCM_HW_PARAM_TICK_TIME 19 /* Approx tick duration in us */ 382 #define SNDRV_PCM_HW_PARAM_FIRST_INTERVAL SNDRV_PCM_HW_PARAM_SAMPLE_BITS 383 #define SNDRV_PCM_HW_PARAM_LAST_INTERVAL SNDRV_PCM_HW_PARAM_TICK_TIME 384 385 #define SNDRV_PCM_HW_PARAMS_NORESAMPLE (1<<0) /* avoid rate resampling */ 386 #define SNDRV_PCM_HW_PARAMS_EXPORT_BUFFER (1<<1) /* export buffer */ 387 #define SNDRV_PCM_HW_PARAMS_NO_PERIOD_WAKEUP (1<<2) /* disable period wakeups */ 388 #define SNDRV_PCM_HW_PARAMS_NO_DRAIN_SILENCE (1<<3) /* suppress drain with the filling 389 * of the silence samples 390 */ 391 392 struct snd_interval { 393 unsigned int min, max; 394 unsigned int openmin:1, 395 openmax:1, 396 integer:1, 397 empty:1; 398 }; 399 400 #define SNDRV_MASK_MAX 256 401 402 struct snd_mask { 403 __u32 bits[(SNDRV_MASK_MAX+31)/32]; 404 }; 405 406 struct snd_pcm_hw_params { 407 unsigned int flags; 408 struct snd_mask masks[SNDRV_PCM_HW_PARAM_LAST_MASK - 409 SNDRV_PCM_HW_PARAM_FIRST_MASK + 1]; 410 struct snd_mask mres[5]; /* reserved masks */ 411 struct snd_interval intervals[SNDRV_PCM_HW_PARAM_LAST_INTERVAL - 412 SNDRV_PCM_HW_PARAM_FIRST_INTERVAL + 1]; 413 struct snd_interval ires[9]; /* reserved intervals */ 414 unsigned int rmask; /* W: requested masks */ 415 unsigned int cmask; /* R: changed masks */ 416 unsigned int info; /* R: Info flags for returned setup */ 417 unsigned int msbits; /* R: used most significant bits (in sample bit-width) */ 418 unsigned int rate_num; /* R: rate numerator */ 419 unsigned int rate_den; /* R: rate denominator */ 420 snd_pcm_uframes_t fifo_size; /* R: chip FIFO size in frames */ 421 unsigned char reserved[64]; /* reserved for future */ 422 }; 423 424 enum { 425 SNDRV_PCM_TSTAMP_NONE = 0, 426 SNDRV_PCM_TSTAMP_ENABLE, 427 SNDRV_PCM_TSTAMP_LAST = SNDRV_PCM_TSTAMP_ENABLE, 428 }; 429 430 struct snd_pcm_sw_params { 431 int tstamp_mode; /* timestamp mode */ 432 unsigned int period_step; 433 unsigned int sleep_min; /* min ticks to sleep */ 434 snd_pcm_uframes_t avail_min; /* min avail frames for wakeup */ 435 snd_pcm_uframes_t xfer_align; /* obsolete: xfer size need to be a multiple */ 436 snd_pcm_uframes_t start_threshold; /* min hw_avail frames for automatic start */ 437 /* 438 * The following two thresholds alleviate playback buffer underruns; when 439 * hw_avail drops below the threshold, the respective action is triggered: 440 */ 441 snd_pcm_uframes_t stop_threshold; /* - stop playback */ 442 snd_pcm_uframes_t silence_threshold; /* - pre-fill buffer with silence */ 443 snd_pcm_uframes_t silence_size; /* max size of silence pre-fill; when >= boundary, 444 * fill played area with silence immediately */ 445 snd_pcm_uframes_t boundary; /* pointers wrap point */ 446 unsigned int proto; /* protocol version */ 447 unsigned int tstamp_type; /* timestamp type (req. proto >= 2.0.12) */ 448 unsigned char reserved[56]; /* reserved for future */ 449 }; 450 451 struct snd_pcm_channel_info { 452 unsigned int channel; 453 __kernel_off_t offset; /* mmap offset */ 454 unsigned int first; /* offset to first sample in bits */ 455 unsigned int step; /* samples distance in bits */ 456 }; 457 458 enum { 459 /* 460 * first definition for backwards compatibility only, 461 * maps to wallclock/link time for HDAudio playback and DEFAULT/DMA time for everything else 462 */ 463 SNDRV_PCM_AUDIO_TSTAMP_TYPE_COMPAT = 0, 464 465 /* timestamp definitions */ 466 SNDRV_PCM_AUDIO_TSTAMP_TYPE_DEFAULT = 1, /* DMA time, reported as per hw_ptr */ 467 SNDRV_PCM_AUDIO_TSTAMP_TYPE_LINK = 2, /* link time reported by sample or wallclock counter, reset on startup */ 468 SNDRV_PCM_AUDIO_TSTAMP_TYPE_LINK_ABSOLUTE = 3, /* link time reported by sample or wallclock counter, not reset on startup */ 469 SNDRV_PCM_AUDIO_TSTAMP_TYPE_LINK_ESTIMATED = 4, /* link time estimated indirectly */ 470 SNDRV_PCM_AUDIO_TSTAMP_TYPE_LINK_SYNCHRONIZED = 5, /* link time synchronized with system time */ 471 SNDRV_PCM_AUDIO_TSTAMP_TYPE_LAST = SNDRV_PCM_AUDIO_TSTAMP_TYPE_LINK_SYNCHRONIZED 472 }; 473 474 /* explicit padding avoids incompatibility between i386 and x86-64 */ 475 typedef struct { unsigned char pad[sizeof(time_t) - sizeof(int)]; } __time_pad; 476 477 struct snd_pcm_status { 478 snd_pcm_state_t state; /* stream state */ 479 __time_pad pad1; /* align to timespec */ 480 struct timespec trigger_tstamp; /* time when stream was started/stopped/paused */ 481 struct timespec tstamp; /* reference timestamp */ 482 snd_pcm_uframes_t appl_ptr; /* appl ptr */ 483 snd_pcm_uframes_t hw_ptr; /* hw ptr */ 484 snd_pcm_sframes_t delay; /* current delay in frames */ 485 snd_pcm_uframes_t avail; /* number of frames available */ 486 snd_pcm_uframes_t avail_max; /* max frames available on hw since last status */ 487 snd_pcm_uframes_t overrange; /* count of ADC (capture) overrange detections from last status */ 488 snd_pcm_state_t suspended_state; /* suspended stream state */ 489 __u32 audio_tstamp_data; /* needed for 64-bit alignment, used for configs/report to/from userspace */ 490 struct timespec audio_tstamp; /* sample counter, wall clock, PHC or on-demand sync'ed */ 491 struct timespec driver_tstamp; /* useful in case reference system tstamp is reported with delay */ 492 __u32 audio_tstamp_accuracy; /* in ns units, only valid if indicated in audio_tstamp_data */ 493 unsigned char reserved[52-2*sizeof(struct timespec)]; /* must be filled with zero */ 494 }; 495 496 /* 497 * For mmap operations, we need the 64-bit layout, both for compat mode, 498 * and for y2038 compatibility. For 64-bit applications, the two definitions 499 * are identical, so we keep the traditional version. 500 */ 501 #ifdef __SND_STRUCT_TIME64 502 #define __snd_pcm_mmap_status64 snd_pcm_mmap_status 503 #define __snd_pcm_mmap_control64 snd_pcm_mmap_control 504 #define __snd_pcm_sync_ptr64 snd_pcm_sync_ptr 505 #define __snd_timespec64 timespec 506 struct __snd_timespec { 507 __s32 tv_sec; 508 __s32 tv_nsec; 509 }; 510 #else 511 #define __snd_pcm_mmap_status snd_pcm_mmap_status 512 #define __snd_pcm_mmap_control snd_pcm_mmap_control 513 #define __snd_pcm_sync_ptr snd_pcm_sync_ptr 514 #define __snd_timespec timespec 515 struct __snd_timespec64 { 516 __s64 tv_sec; 517 __s64 tv_nsec; 518 }; 519 520 #endif 521 522 struct __snd_pcm_mmap_status { 523 snd_pcm_state_t state; /* RO: state - SNDRV_PCM_STATE_XXXX */ 524 int pad1; /* Needed for 64 bit alignment */ 525 snd_pcm_uframes_t hw_ptr; /* RO: hw ptr (0...boundary-1) */ 526 struct __snd_timespec tstamp; /* Timestamp */ 527 snd_pcm_state_t suspended_state; /* RO: suspended stream state */ 528 struct __snd_timespec audio_tstamp; /* from sample counter or wall clock */ 529 }; 530 531 struct __snd_pcm_mmap_control { 532 snd_pcm_uframes_t appl_ptr; /* RW: appl ptr (0...boundary-1) */ 533 snd_pcm_uframes_t avail_min; /* RW: min available frames for wakeup */ 534 }; 535 536 #define SNDRV_PCM_SYNC_PTR_HWSYNC (1<<0) /* execute hwsync */ 537 #define SNDRV_PCM_SYNC_PTR_APPL (1<<1) /* get appl_ptr from driver (r/w op) */ 538 #define SNDRV_PCM_SYNC_PTR_AVAIL_MIN (1<<2) /* get avail_min from driver */ 539 540 struct __snd_pcm_sync_ptr { 541 unsigned int flags; 542 union { 543 struct __snd_pcm_mmap_status status; 544 unsigned char reserved[64]; 545 } s; 546 union { 547 struct __snd_pcm_mmap_control control; 548 unsigned char reserved[64]; 549 } c; 550 }; 551 552 #if defined(__BYTE_ORDER) ? __BYTE_ORDER == __BIG_ENDIAN : defined(__BIG_ENDIAN) 553 typedef char __pad_before_uframe[sizeof(__u64) - sizeof(snd_pcm_uframes_t)]; 554 typedef char __pad_after_uframe[0]; 555 #endif 556 557 #if defined(__BYTE_ORDER) ? __BYTE_ORDER == __LITTLE_ENDIAN : defined(__LITTLE_ENDIAN) 558 typedef char __pad_before_uframe[0]; 559 typedef char __pad_after_uframe[sizeof(__u64) - sizeof(snd_pcm_uframes_t)]; 560 #endif 561 562 struct __snd_pcm_mmap_status64 { 563 snd_pcm_state_t state; /* RO: state - SNDRV_PCM_STATE_XXXX */ 564 __u32 pad1; /* Needed for 64 bit alignment */ 565 __pad_before_uframe __pad1; 566 snd_pcm_uframes_t hw_ptr; /* RO: hw ptr (0...boundary-1) */ 567 __pad_after_uframe __pad2; 568 struct __snd_timespec64 tstamp; /* Timestamp */ 569 snd_pcm_state_t suspended_state;/* RO: suspended stream state */ 570 __u32 pad3; /* Needed for 64 bit alignment */ 571 struct __snd_timespec64 audio_tstamp; /* sample counter or wall clock */ 572 }; 573 574 struct __snd_pcm_mmap_control64 { 575 __pad_before_uframe __pad1; 576 snd_pcm_uframes_t appl_ptr; /* RW: appl ptr (0...boundary-1) */ 577 __pad_before_uframe __pad2; // This should be __pad_after_uframe, but binary 578 // backwards compatibility constraints prevent a fix. 579 580 __pad_before_uframe __pad3; 581 snd_pcm_uframes_t avail_min; /* RW: min available frames for wakeup */ 582 __pad_after_uframe __pad4; 583 }; 584 585 struct __snd_pcm_sync_ptr64 { 586 __u32 flags; 587 __u32 pad1; 588 union { 589 struct __snd_pcm_mmap_status64 status; 590 unsigned char reserved[64]; 591 } s; 592 union { 593 struct __snd_pcm_mmap_control64 control; 594 unsigned char reserved[64]; 595 } c; 596 }; 597 598 struct snd_xferi { 599 snd_pcm_sframes_t result; 600 void *buf; 601 snd_pcm_uframes_t frames; 602 }; 603 604 struct snd_xfern { 605 snd_pcm_sframes_t result; 606 void * *bufs; 607 snd_pcm_uframes_t frames; 608 }; 609 610 enum { 611 SNDRV_PCM_TSTAMP_TYPE_GETTIMEOFDAY = 0, /* gettimeofday equivalent */ 612 SNDRV_PCM_TSTAMP_TYPE_MONOTONIC, /* posix_clock_monotonic equivalent */ 613 SNDRV_PCM_TSTAMP_TYPE_MONOTONIC_RAW, /* monotonic_raw (no NTP) */ 614 SNDRV_PCM_TSTAMP_TYPE_LAST = SNDRV_PCM_TSTAMP_TYPE_MONOTONIC_RAW, 615 }; 616 617 /* channel positions */ 618 enum { 619 SNDRV_CHMAP_UNKNOWN = 0, 620 SNDRV_CHMAP_NA, /* N/A, silent */ 621 SNDRV_CHMAP_MONO, /* mono stream */ 622 /* this follows the alsa-lib mixer channel value + 3 */ 623 SNDRV_CHMAP_FL, /* front left */ 624 SNDRV_CHMAP_FR, /* front right */ 625 SNDRV_CHMAP_RL, /* rear left */ 626 SNDRV_CHMAP_RR, /* rear right */ 627 SNDRV_CHMAP_FC, /* front center */ 628 SNDRV_CHMAP_LFE, /* LFE */ 629 SNDRV_CHMAP_SL, /* side left */ 630 SNDRV_CHMAP_SR, /* side right */ 631 SNDRV_CHMAP_RC, /* rear center */ 632 /* new definitions */ 633 SNDRV_CHMAP_FLC, /* front left center */ 634 SNDRV_CHMAP_FRC, /* front right center */ 635 SNDRV_CHMAP_RLC, /* rear left center */ 636 SNDRV_CHMAP_RRC, /* rear right center */ 637 SNDRV_CHMAP_FLW, /* front left wide */ 638 SNDRV_CHMAP_FRW, /* front right wide */ 639 SNDRV_CHMAP_FLH, /* front left high */ 640 SNDRV_CHMAP_FCH, /* front center high */ 641 SNDRV_CHMAP_FRH, /* front right high */ 642 SNDRV_CHMAP_TC, /* top center */ 643 SNDRV_CHMAP_TFL, /* top front left */ 644 SNDRV_CHMAP_TFR, /* top front right */ 645 SNDRV_CHMAP_TFC, /* top front center */ 646 SNDRV_CHMAP_TRL, /* top rear left */ 647 SNDRV_CHMAP_TRR, /* top rear right */ 648 SNDRV_CHMAP_TRC, /* top rear center */ 649 /* new definitions for UAC2 */ 650 SNDRV_CHMAP_TFLC, /* top front left center */ 651 SNDRV_CHMAP_TFRC, /* top front right center */ 652 SNDRV_CHMAP_TSL, /* top side left */ 653 SNDRV_CHMAP_TSR, /* top side right */ 654 SNDRV_CHMAP_LLFE, /* left LFE */ 655 SNDRV_CHMAP_RLFE, /* right LFE */ 656 SNDRV_CHMAP_BC, /* bottom center */ 657 SNDRV_CHMAP_BLC, /* bottom left center */ 658 SNDRV_CHMAP_BRC, /* bottom right center */ 659 SNDRV_CHMAP_LAST = SNDRV_CHMAP_BRC, 660 }; 661 662 #define SNDRV_CHMAP_POSITION_MASK 0xffff 663 #define SNDRV_CHMAP_PHASE_INVERSE (0x01 << 16) 664 #define SNDRV_CHMAP_DRIVER_SPEC (0x02 << 16) 665 666 #define SNDRV_PCM_IOCTL_PVERSION _IOR('A', 0x00, int) 667 #define SNDRV_PCM_IOCTL_INFO _IOR('A', 0x01, struct snd_pcm_info) 668 #define SNDRV_PCM_IOCTL_TSTAMP _IOW('A', 0x02, int) 669 #define SNDRV_PCM_IOCTL_TTSTAMP _IOW('A', 0x03, int) 670 #define SNDRV_PCM_IOCTL_USER_PVERSION _IOW('A', 0x04, int) 671 #define SNDRV_PCM_IOCTL_HW_REFINE _IOWR('A', 0x10, struct snd_pcm_hw_params) 672 #define SNDRV_PCM_IOCTL_HW_PARAMS _IOWR('A', 0x11, struct snd_pcm_hw_params) 673 #define SNDRV_PCM_IOCTL_HW_FREE _IO('A', 0x12) 674 #define SNDRV_PCM_IOCTL_SW_PARAMS _IOWR('A', 0x13, struct snd_pcm_sw_params) 675 #define SNDRV_PCM_IOCTL_STATUS _IOR('A', 0x20, struct snd_pcm_status) 676 #define SNDRV_PCM_IOCTL_DELAY _IOR('A', 0x21, snd_pcm_sframes_t) 677 #define SNDRV_PCM_IOCTL_HWSYNC _IO('A', 0x22) 678 #define __SNDRV_PCM_IOCTL_SYNC_PTR _IOWR('A', 0x23, struct __snd_pcm_sync_ptr) 679 #define __SNDRV_PCM_IOCTL_SYNC_PTR64 _IOWR('A', 0x23, struct __snd_pcm_sync_ptr64) 680 #define SNDRV_PCM_IOCTL_SYNC_PTR _IOWR('A', 0x23, struct snd_pcm_sync_ptr) 681 #define SNDRV_PCM_IOCTL_STATUS_EXT _IOWR('A', 0x24, struct snd_pcm_status) 682 #define SNDRV_PCM_IOCTL_CHANNEL_INFO _IOR('A', 0x32, struct snd_pcm_channel_info) 683 #define SNDRV_PCM_IOCTL_PREPARE _IO('A', 0x40) 684 #define SNDRV_PCM_IOCTL_RESET _IO('A', 0x41) 685 #define SNDRV_PCM_IOCTL_START _IO('A', 0x42) 686 #define SNDRV_PCM_IOCTL_DROP _IO('A', 0x43) 687 #define SNDRV_PCM_IOCTL_DRAIN _IO('A', 0x44) 688 #define SNDRV_PCM_IOCTL_PAUSE _IOW('A', 0x45, int) 689 #define SNDRV_PCM_IOCTL_REWIND _IOW('A', 0x46, snd_pcm_uframes_t) 690 #define SNDRV_PCM_IOCTL_RESUME _IO('A', 0x47) 691 #define SNDRV_PCM_IOCTL_XRUN _IO('A', 0x48) 692 #define SNDRV_PCM_IOCTL_FORWARD _IOW('A', 0x49, snd_pcm_uframes_t) 693 #define SNDRV_PCM_IOCTL_WRITEI_FRAMES _IOW('A', 0x50, struct snd_xferi) 694 #define SNDRV_PCM_IOCTL_READI_FRAMES _IOR('A', 0x51, struct snd_xferi) 695 #define SNDRV_PCM_IOCTL_WRITEN_FRAMES _IOW('A', 0x52, struct snd_xfern) 696 #define SNDRV_PCM_IOCTL_READN_FRAMES _IOR('A', 0x53, struct snd_xfern) 697 #define SNDRV_PCM_IOCTL_LINK _IOW('A', 0x60, int) 698 #define SNDRV_PCM_IOCTL_UNLINK _IO('A', 0x61) 699 700 /***************************************************************************** 701 * * 702 * MIDI v1.0 interface * 703 * * 704 *****************************************************************************/ 705 706 /* 707 * Raw MIDI section - /dev/snd/midi?? 708 */ 709 710 #define SNDRV_RAWMIDI_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 4) 711 712 enum { 713 SNDRV_RAWMIDI_STREAM_OUTPUT = 0, 714 SNDRV_RAWMIDI_STREAM_INPUT, 715 SNDRV_RAWMIDI_STREAM_LAST = SNDRV_RAWMIDI_STREAM_INPUT, 716 }; 717 718 #define SNDRV_RAWMIDI_INFO_OUTPUT 0x00000001 719 #define SNDRV_RAWMIDI_INFO_INPUT 0x00000002 720 #define SNDRV_RAWMIDI_INFO_DUPLEX 0x00000004 721 #define SNDRV_RAWMIDI_INFO_UMP 0x00000008 722 723 struct snd_rawmidi_info { 724 unsigned int device; /* RO/WR (control): device number */ 725 unsigned int subdevice; /* RO/WR (control): subdevice number */ 726 int stream; /* WR: stream */ 727 int card; /* R: card number */ 728 unsigned int flags; /* SNDRV_RAWMIDI_INFO_XXXX */ 729 unsigned char id[64]; /* ID (user selectable) */ 730 unsigned char name[80]; /* name of device */ 731 unsigned char subname[32]; /* name of active or selected subdevice */ 732 unsigned int subdevices_count; 733 unsigned int subdevices_avail; 734 unsigned char reserved[64]; /* reserved for future use */ 735 }; 736 737 #define SNDRV_RAWMIDI_MODE_FRAMING_MASK (7<<0) 738 #define SNDRV_RAWMIDI_MODE_FRAMING_SHIFT 0 739 #define SNDRV_RAWMIDI_MODE_FRAMING_NONE (0<<0) 740 #define SNDRV_RAWMIDI_MODE_FRAMING_TSTAMP (1<<0) 741 #define SNDRV_RAWMIDI_MODE_CLOCK_MASK (7<<3) 742 #define SNDRV_RAWMIDI_MODE_CLOCK_SHIFT 3 743 #define SNDRV_RAWMIDI_MODE_CLOCK_NONE (0<<3) 744 #define SNDRV_RAWMIDI_MODE_CLOCK_REALTIME (1<<3) 745 #define SNDRV_RAWMIDI_MODE_CLOCK_MONOTONIC (2<<3) 746 #define SNDRV_RAWMIDI_MODE_CLOCK_MONOTONIC_RAW (3<<3) 747 748 #define SNDRV_RAWMIDI_FRAMING_DATA_LENGTH 16 749 750 struct snd_rawmidi_framing_tstamp { 751 /* For now, frame_type is always 0. Midi 2.0 is expected to add new 752 * types here. Applications are expected to skip unknown frame types. 753 */ 754 __u8 frame_type; 755 __u8 length; /* number of valid bytes in data field */ 756 __u8 reserved[2]; 757 __u32 tv_nsec; /* nanoseconds */ 758 __u64 tv_sec; /* seconds */ 759 __u8 data[SNDRV_RAWMIDI_FRAMING_DATA_LENGTH]; 760 } __attribute__((packed)); 761 762 struct snd_rawmidi_params { 763 int stream; 764 size_t buffer_size; /* queue size in bytes */ 765 size_t avail_min; /* minimum avail bytes for wakeup */ 766 unsigned int no_active_sensing: 1; /* do not send active sensing byte in close() */ 767 unsigned int mode; /* For input data only, frame incoming data */ 768 unsigned char reserved[12]; /* reserved for future use */ 769 }; 770 771 struct snd_rawmidi_status { 772 int stream; 773 __time_pad pad1; 774 struct timespec tstamp; /* Timestamp */ 775 size_t avail; /* available bytes */ 776 size_t xruns; /* count of overruns since last status (in bytes) */ 777 unsigned char reserved[16]; /* reserved for future use */ 778 }; 779 780 /* UMP EP info flags */ 781 #define SNDRV_UMP_EP_INFO_STATIC_BLOCKS 0x01 782 783 /* UMP EP Protocol / JRTS capability bits */ 784 #define SNDRV_UMP_EP_INFO_PROTO_MIDI_MASK 0x0300 785 #define SNDRV_UMP_EP_INFO_PROTO_MIDI1 0x0100 /* MIDI 1.0 */ 786 #define SNDRV_UMP_EP_INFO_PROTO_MIDI2 0x0200 /* MIDI 2.0 */ 787 #define SNDRV_UMP_EP_INFO_PROTO_JRTS_MASK 0x0003 788 #define SNDRV_UMP_EP_INFO_PROTO_JRTS_TX 0x0001 /* JRTS Transmit */ 789 #define SNDRV_UMP_EP_INFO_PROTO_JRTS_RX 0x0002 /* JRTS Receive */ 790 791 /* UMP Endpoint information */ 792 struct snd_ump_endpoint_info { 793 int card; /* card number */ 794 int device; /* device number */ 795 unsigned int flags; /* additional info */ 796 unsigned int protocol_caps; /* protocol capabilities */ 797 unsigned int protocol; /* current protocol */ 798 unsigned int num_blocks; /* # of function blocks */ 799 unsigned short version; /* UMP major/minor version */ 800 unsigned short family_id; /* MIDI device family ID */ 801 unsigned short model_id; /* MIDI family model ID */ 802 unsigned int manufacturer_id; /* MIDI manufacturer ID */ 803 unsigned char sw_revision[4]; /* software revision */ 804 unsigned short padding; 805 unsigned char name[128]; /* endpoint name string */ 806 unsigned char product_id[128]; /* unique product id string */ 807 unsigned char reserved[32]; 808 } __attribute__((packed)); 809 810 /* UMP direction */ 811 #define SNDRV_UMP_DIR_INPUT 0x01 812 #define SNDRV_UMP_DIR_OUTPUT 0x02 813 #define SNDRV_UMP_DIR_BIDIRECTION 0x03 814 815 /* UMP block info flags */ 816 #define SNDRV_UMP_BLOCK_IS_MIDI1 (1U << 0) /* MIDI 1.0 port w/o restrict */ 817 #define SNDRV_UMP_BLOCK_IS_LOWSPEED (1U << 1) /* 31.25Kbps B/W MIDI1 port */ 818 819 /* UMP block user-interface hint */ 820 #define SNDRV_UMP_BLOCK_UI_HINT_UNKNOWN 0x00 821 #define SNDRV_UMP_BLOCK_UI_HINT_RECEIVER 0x01 822 #define SNDRV_UMP_BLOCK_UI_HINT_SENDER 0x02 823 #define SNDRV_UMP_BLOCK_UI_HINT_BOTH 0x03 824 825 /* UMP groups and blocks */ 826 #define SNDRV_UMP_MAX_GROUPS 16 827 #define SNDRV_UMP_MAX_BLOCKS 32 828 829 /* UMP Block information */ 830 struct snd_ump_block_info { 831 int card; /* card number */ 832 int device; /* device number */ 833 unsigned char block_id; /* block ID (R/W) */ 834 unsigned char direction; /* UMP direction */ 835 unsigned char active; /* Activeness */ 836 unsigned char first_group; /* first group ID */ 837 unsigned char num_groups; /* number of groups */ 838 unsigned char midi_ci_version; /* MIDI-CI support version */ 839 unsigned char sysex8_streams; /* max number of sysex8 streams */ 840 unsigned char ui_hint; /* user interface hint */ 841 unsigned int flags; /* various info flags */ 842 unsigned char name[128]; /* block name string */ 843 unsigned char reserved[32]; 844 } __attribute__((packed)); 845 846 #define SNDRV_RAWMIDI_IOCTL_PVERSION _IOR('W', 0x00, int) 847 #define SNDRV_RAWMIDI_IOCTL_INFO _IOR('W', 0x01, struct snd_rawmidi_info) 848 #define SNDRV_RAWMIDI_IOCTL_USER_PVERSION _IOW('W', 0x02, int) 849 #define SNDRV_RAWMIDI_IOCTL_PARAMS _IOWR('W', 0x10, struct snd_rawmidi_params) 850 #define SNDRV_RAWMIDI_IOCTL_STATUS _IOWR('W', 0x20, struct snd_rawmidi_status) 851 #define SNDRV_RAWMIDI_IOCTL_DROP _IOW('W', 0x30, int) 852 #define SNDRV_RAWMIDI_IOCTL_DRAIN _IOW('W', 0x31, int) 853 /* Additional ioctls for UMP rawmidi devices */ 854 #define SNDRV_UMP_IOCTL_ENDPOINT_INFO _IOR('W', 0x40, struct snd_ump_endpoint_info) 855 #define SNDRV_UMP_IOCTL_BLOCK_INFO _IOR('W', 0x41, struct snd_ump_block_info) 856 857 /* 858 * Timer section - /dev/snd/timer 859 */ 860 861 #define SNDRV_TIMER_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 7) 862 863 enum { 864 SNDRV_TIMER_CLASS_NONE = -1, 865 SNDRV_TIMER_CLASS_SLAVE = 0, 866 SNDRV_TIMER_CLASS_GLOBAL, 867 SNDRV_TIMER_CLASS_CARD, 868 SNDRV_TIMER_CLASS_PCM, 869 SNDRV_TIMER_CLASS_LAST = SNDRV_TIMER_CLASS_PCM, 870 }; 871 872 /* slave timer classes */ 873 enum { 874 SNDRV_TIMER_SCLASS_NONE = 0, 875 SNDRV_TIMER_SCLASS_APPLICATION, 876 SNDRV_TIMER_SCLASS_SEQUENCER, /* alias */ 877 SNDRV_TIMER_SCLASS_OSS_SEQUENCER, /* alias */ 878 SNDRV_TIMER_SCLASS_LAST = SNDRV_TIMER_SCLASS_OSS_SEQUENCER, 879 }; 880 881 /* global timers (device member) */ 882 #define SNDRV_TIMER_GLOBAL_SYSTEM 0 883 #define SNDRV_TIMER_GLOBAL_RTC 1 /* unused */ 884 #define SNDRV_TIMER_GLOBAL_HPET 2 885 #define SNDRV_TIMER_GLOBAL_HRTIMER 3 886 887 /* info flags */ 888 #define SNDRV_TIMER_FLG_SLAVE (1<<0) /* cannot be controlled */ 889 890 struct snd_timer_id { 891 int dev_class; 892 int dev_sclass; 893 int card; 894 int device; 895 int subdevice; 896 }; 897 898 struct snd_timer_ginfo { 899 struct snd_timer_id tid; /* requested timer ID */ 900 unsigned int flags; /* timer flags - SNDRV_TIMER_FLG_* */ 901 int card; /* card number */ 902 unsigned char id[64]; /* timer identification */ 903 unsigned char name[80]; /* timer name */ 904 unsigned long reserved0; /* reserved for future use */ 905 unsigned long resolution; /* average period resolution in ns */ 906 unsigned long resolution_min; /* minimal period resolution in ns */ 907 unsigned long resolution_max; /* maximal period resolution in ns */ 908 unsigned int clients; /* active timer clients */ 909 unsigned char reserved[32]; 910 }; 911 912 struct snd_timer_gparams { 913 struct snd_timer_id tid; /* requested timer ID */ 914 unsigned long period_num; /* requested precise period duration (in seconds) - numerator */ 915 unsigned long period_den; /* requested precise period duration (in seconds) - denominator */ 916 unsigned char reserved[32]; 917 }; 918 919 struct snd_timer_gstatus { 920 struct snd_timer_id tid; /* requested timer ID */ 921 unsigned long resolution; /* current period resolution in ns */ 922 unsigned long resolution_num; /* precise current period resolution (in seconds) - numerator */ 923 unsigned long resolution_den; /* precise current period resolution (in seconds) - denominator */ 924 unsigned char reserved[32]; 925 }; 926 927 struct snd_timer_select { 928 struct snd_timer_id id; /* bind to timer ID */ 929 unsigned char reserved[32]; /* reserved */ 930 }; 931 932 struct snd_timer_info { 933 unsigned int flags; /* timer flags - SNDRV_TIMER_FLG_* */ 934 int card; /* card number */ 935 unsigned char id[64]; /* timer identificator */ 936 unsigned char name[80]; /* timer name */ 937 unsigned long reserved0; /* reserved for future use */ 938 unsigned long resolution; /* average period resolution in ns */ 939 unsigned char reserved[64]; /* reserved */ 940 }; 941 942 #define SNDRV_TIMER_PSFLG_AUTO (1<<0) /* auto start, otherwise one-shot */ 943 #define SNDRV_TIMER_PSFLG_EXCLUSIVE (1<<1) /* exclusive use, precise start/stop/pause/continue */ 944 #define SNDRV_TIMER_PSFLG_EARLY_EVENT (1<<2) /* write early event to the poll queue */ 945 946 struct snd_timer_params { 947 unsigned int flags; /* flags - SNDRV_TIMER_PSFLG_* */ 948 unsigned int ticks; /* requested resolution in ticks */ 949 unsigned int queue_size; /* total size of queue (32-1024) */ 950 unsigned int reserved0; /* reserved, was: failure locations */ 951 unsigned int filter; /* event filter (bitmask of SNDRV_TIMER_EVENT_*) */ 952 unsigned char reserved[60]; /* reserved */ 953 }; 954 955 struct snd_timer_status { 956 struct timespec tstamp; /* Timestamp - last update */ 957 unsigned int resolution; /* current period resolution in ns */ 958 unsigned int lost; /* counter of master tick lost */ 959 unsigned int overrun; /* count of read queue overruns */ 960 unsigned int queue; /* used queue size */ 961 unsigned char reserved[64]; /* reserved */ 962 }; 963 964 #define SNDRV_TIMER_IOCTL_PVERSION _IOR('T', 0x00, int) 965 #define SNDRV_TIMER_IOCTL_NEXT_DEVICE _IOWR('T', 0x01, struct snd_timer_id) 966 #define SNDRV_TIMER_IOCTL_TREAD_OLD _IOW('T', 0x02, int) 967 #define SNDRV_TIMER_IOCTL_GINFO _IOWR('T', 0x03, struct snd_timer_ginfo) 968 #define SNDRV_TIMER_IOCTL_GPARAMS _IOW('T', 0x04, struct snd_timer_gparams) 969 #define SNDRV_TIMER_IOCTL_GSTATUS _IOWR('T', 0x05, struct snd_timer_gstatus) 970 #define SNDRV_TIMER_IOCTL_SELECT _IOW('T', 0x10, struct snd_timer_select) 971 #define SNDRV_TIMER_IOCTL_INFO _IOR('T', 0x11, struct snd_timer_info) 972 #define SNDRV_TIMER_IOCTL_PARAMS _IOW('T', 0x12, struct snd_timer_params) 973 #define SNDRV_TIMER_IOCTL_STATUS _IOR('T', 0x14, struct snd_timer_status) 974 /* The following four ioctls are changed since 1.0.9 due to confliction */ 975 #define SNDRV_TIMER_IOCTL_START _IO('T', 0xa0) 976 #define SNDRV_TIMER_IOCTL_STOP _IO('T', 0xa1) 977 #define SNDRV_TIMER_IOCTL_CONTINUE _IO('T', 0xa2) 978 #define SNDRV_TIMER_IOCTL_PAUSE _IO('T', 0xa3) 979 #define SNDRV_TIMER_IOCTL_TREAD64 _IOW('T', 0xa4, int) 980 981 #if __BITS_PER_LONG == 64 982 #define SNDRV_TIMER_IOCTL_TREAD SNDRV_TIMER_IOCTL_TREAD_OLD 983 #else 984 #define SNDRV_TIMER_IOCTL_TREAD ((sizeof(__kernel_long_t) >= sizeof(time_t)) ? \ 985 SNDRV_TIMER_IOCTL_TREAD_OLD : \ 986 SNDRV_TIMER_IOCTL_TREAD64) 987 #endif 988 989 struct snd_timer_read { 990 unsigned int resolution; 991 unsigned int ticks; 992 }; 993 994 enum { 995 SNDRV_TIMER_EVENT_RESOLUTION = 0, /* val = resolution in ns */ 996 SNDRV_TIMER_EVENT_TICK, /* val = ticks */ 997 SNDRV_TIMER_EVENT_START, /* val = resolution in ns */ 998 SNDRV_TIMER_EVENT_STOP, /* val = 0 */ 999 SNDRV_TIMER_EVENT_CONTINUE, /* val = resolution in ns */ 1000 SNDRV_TIMER_EVENT_PAUSE, /* val = 0 */ 1001 SNDRV_TIMER_EVENT_EARLY, /* val = 0, early event */ 1002 SNDRV_TIMER_EVENT_SUSPEND, /* val = 0 */ 1003 SNDRV_TIMER_EVENT_RESUME, /* val = resolution in ns */ 1004 /* master timer events for slave timer instances */ 1005 SNDRV_TIMER_EVENT_MSTART = SNDRV_TIMER_EVENT_START + 10, 1006 SNDRV_TIMER_EVENT_MSTOP = SNDRV_TIMER_EVENT_STOP + 10, 1007 SNDRV_TIMER_EVENT_MCONTINUE = SNDRV_TIMER_EVENT_CONTINUE + 10, 1008 SNDRV_TIMER_EVENT_MPAUSE = SNDRV_TIMER_EVENT_PAUSE + 10, 1009 SNDRV_TIMER_EVENT_MSUSPEND = SNDRV_TIMER_EVENT_SUSPEND + 10, 1010 SNDRV_TIMER_EVENT_MRESUME = SNDRV_TIMER_EVENT_RESUME + 10, 1011 }; 1012 1013 struct snd_timer_tread { 1014 int event; 1015 __time_pad pad1; 1016 struct timespec tstamp; 1017 unsigned int val; 1018 __time_pad pad2; 1019 }; 1020 1021 /**************************************************************************** 1022 * * 1023 * Section for driver control interface - /dev/snd/control? * 1024 * * 1025 ****************************************************************************/ 1026 1027 #define SNDRV_CTL_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 9) 1028 1029 struct snd_ctl_card_info { 1030 int card; /* card number */ 1031 int pad; /* reserved for future (was type) */ 1032 unsigned char id[16]; /* ID of card (user selectable) */ 1033 unsigned char driver[16]; /* Driver name */ 1034 unsigned char name[32]; /* Short name of soundcard */ 1035 unsigned char longname[80]; /* name + info text about soundcard */ 1036 unsigned char reserved_[16]; /* reserved for future (was ID of mixer) */ 1037 unsigned char mixername[80]; /* visual mixer identification */ 1038 unsigned char components[128]; /* card components / fine identification, delimited with one space (AC97 etc..) */ 1039 }; 1040 1041 typedef int __bitwise snd_ctl_elem_type_t; 1042 #define SNDRV_CTL_ELEM_TYPE_NONE ((snd_ctl_elem_type_t) 0) /* invalid */ 1043 #define SNDRV_CTL_ELEM_TYPE_BOOLEAN ((snd_ctl_elem_type_t) 1) /* boolean type */ 1044 #define SNDRV_CTL_ELEM_TYPE_INTEGER ((snd_ctl_elem_type_t) 2) /* integer type */ 1045 #define SNDRV_CTL_ELEM_TYPE_ENUMERATED ((snd_ctl_elem_type_t) 3) /* enumerated type */ 1046 #define SNDRV_CTL_ELEM_TYPE_BYTES ((snd_ctl_elem_type_t) 4) /* byte array */ 1047 #define SNDRV_CTL_ELEM_TYPE_IEC958 ((snd_ctl_elem_type_t) 5) /* IEC958 (S/PDIF) setup */ 1048 #define SNDRV_CTL_ELEM_TYPE_INTEGER64 ((snd_ctl_elem_type_t) 6) /* 64-bit integer type */ 1049 #define SNDRV_CTL_ELEM_TYPE_LAST SNDRV_CTL_ELEM_TYPE_INTEGER64 1050 1051 typedef int __bitwise snd_ctl_elem_iface_t; 1052 #define SNDRV_CTL_ELEM_IFACE_CARD ((snd_ctl_elem_iface_t) 0) /* global control */ 1053 #define SNDRV_CTL_ELEM_IFACE_HWDEP ((snd_ctl_elem_iface_t) 1) /* hardware dependent device */ 1054 #define SNDRV_CTL_ELEM_IFACE_MIXER ((snd_ctl_elem_iface_t) 2) /* virtual mixer device */ 1055 #define SNDRV_CTL_ELEM_IFACE_PCM ((snd_ctl_elem_iface_t) 3) /* PCM device */ 1056 #define SNDRV_CTL_ELEM_IFACE_RAWMIDI ((snd_ctl_elem_iface_t) 4) /* RawMidi device */ 1057 #define SNDRV_CTL_ELEM_IFACE_TIMER ((snd_ctl_elem_iface_t) 5) /* timer device */ 1058 #define SNDRV_CTL_ELEM_IFACE_SEQUENCER ((snd_ctl_elem_iface_t) 6) /* sequencer client */ 1059 #define SNDRV_CTL_ELEM_IFACE_LAST SNDRV_CTL_ELEM_IFACE_SEQUENCER 1060 1061 #define SNDRV_CTL_ELEM_ACCESS_READ (1<<0) 1062 #define SNDRV_CTL_ELEM_ACCESS_WRITE (1<<1) 1063 #define SNDRV_CTL_ELEM_ACCESS_READWRITE (SNDRV_CTL_ELEM_ACCESS_READ|SNDRV_CTL_ELEM_ACCESS_WRITE) 1064 #define SNDRV_CTL_ELEM_ACCESS_VOLATILE (1<<2) /* control value may be changed without a notification */ 1065 /* (1 << 3) is unused. */ 1066 #define SNDRV_CTL_ELEM_ACCESS_TLV_READ (1<<4) /* TLV read is possible */ 1067 #define SNDRV_CTL_ELEM_ACCESS_TLV_WRITE (1<<5) /* TLV write is possible */ 1068 #define SNDRV_CTL_ELEM_ACCESS_TLV_READWRITE (SNDRV_CTL_ELEM_ACCESS_TLV_READ|SNDRV_CTL_ELEM_ACCESS_TLV_WRITE) 1069 #define SNDRV_CTL_ELEM_ACCESS_TLV_COMMAND (1<<6) /* TLV command is possible */ 1070 #define SNDRV_CTL_ELEM_ACCESS_INACTIVE (1<<8) /* control does actually nothing, but may be updated */ 1071 #define SNDRV_CTL_ELEM_ACCESS_LOCK (1<<9) /* write lock */ 1072 #define SNDRV_CTL_ELEM_ACCESS_OWNER (1<<10) /* write lock owner */ 1073 #define SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK (1<<28) /* kernel use a TLV callback */ 1074 #define SNDRV_CTL_ELEM_ACCESS_USER (1<<29) /* user space element */ 1075 /* bits 30 and 31 are obsoleted (for indirect access) */ 1076 1077 /* for further details see the ACPI and PCI power management specification */ 1078 #define SNDRV_CTL_POWER_D0 0x0000 /* full On */ 1079 #define SNDRV_CTL_POWER_D1 0x0100 /* partial On */ 1080 #define SNDRV_CTL_POWER_D2 0x0200 /* partial On */ 1081 #define SNDRV_CTL_POWER_D3 0x0300 /* Off */ 1082 #define SNDRV_CTL_POWER_D3hot (SNDRV_CTL_POWER_D3|0x0000) /* Off, with power */ 1083 #define SNDRV_CTL_POWER_D3cold (SNDRV_CTL_POWER_D3|0x0001) /* Off, without power */ 1084 1085 #define SNDRV_CTL_ELEM_ID_NAME_MAXLEN 44 1086 1087 struct snd_ctl_elem_id { 1088 unsigned int numid; /* numeric identifier, zero = invalid */ 1089 snd_ctl_elem_iface_t iface; /* interface identifier */ 1090 unsigned int device; /* device/client number */ 1091 unsigned int subdevice; /* subdevice (substream) number */ 1092 unsigned char name[SNDRV_CTL_ELEM_ID_NAME_MAXLEN]; /* ASCII name of item */ 1093 unsigned int index; /* index of item */ 1094 }; 1095 1096 struct snd_ctl_elem_list { 1097 unsigned int offset; /* W: first element ID to get */ 1098 unsigned int space; /* W: count of element IDs to get */ 1099 unsigned int used; /* R: count of element IDs set */ 1100 unsigned int count; /* R: count of all elements */ 1101 struct snd_ctl_elem_id *pids; /* R: IDs */ 1102 unsigned char reserved[50]; 1103 }; 1104 1105 struct snd_ctl_elem_info { 1106 struct snd_ctl_elem_id id; /* W: element ID */ 1107 snd_ctl_elem_type_t type; /* R: value type - SNDRV_CTL_ELEM_TYPE_* */ 1108 unsigned int access; /* R: value access (bitmask) - SNDRV_CTL_ELEM_ACCESS_* */ 1109 unsigned int count; /* count of values */ 1110 __kernel_pid_t owner; /* owner's PID of this control */ 1111 union { 1112 struct { 1113 long min; /* R: minimum value */ 1114 long max; /* R: maximum value */ 1115 long step; /* R: step (0 variable) */ 1116 } integer; 1117 struct { 1118 long long min; /* R: minimum value */ 1119 long long max; /* R: maximum value */ 1120 long long step; /* R: step (0 variable) */ 1121 } integer64; 1122 struct { 1123 unsigned int items; /* R: number of items */ 1124 unsigned int item; /* W: item number */ 1125 char name[64]; /* R: value name */ 1126 __u64 names_ptr; /* W: names list (ELEM_ADD only) */ 1127 unsigned int names_length; 1128 } enumerated; 1129 unsigned char reserved[128]; 1130 } value; 1131 unsigned char reserved[64]; 1132 }; 1133 1134 struct snd_ctl_elem_value { 1135 struct snd_ctl_elem_id id; /* W: element ID */ 1136 unsigned int indirect: 1; /* W: indirect access - obsoleted */ 1137 union { 1138 union { 1139 long value[128]; 1140 long *value_ptr; /* obsoleted */ 1141 } integer; 1142 union { 1143 long long value[64]; 1144 long long *value_ptr; /* obsoleted */ 1145 } integer64; 1146 union { 1147 unsigned int item[128]; 1148 unsigned int *item_ptr; /* obsoleted */ 1149 } enumerated; 1150 union { 1151 unsigned char data[512]; 1152 unsigned char *data_ptr; /* obsoleted */ 1153 } bytes; 1154 struct snd_aes_iec958 iec958; 1155 } value; /* RO */ 1156 unsigned char reserved[128]; 1157 }; 1158 1159 struct snd_ctl_tlv { 1160 unsigned int numid; /* control element numeric identification */ 1161 unsigned int length; /* in bytes aligned to 4 */ 1162 unsigned int tlv[]; /* first TLV */ 1163 }; 1164 1165 #define SNDRV_CTL_IOCTL_PVERSION _IOR('U', 0x00, int) 1166 #define SNDRV_CTL_IOCTL_CARD_INFO _IOR('U', 0x01, struct snd_ctl_card_info) 1167 #define SNDRV_CTL_IOCTL_ELEM_LIST _IOWR('U', 0x10, struct snd_ctl_elem_list) 1168 #define SNDRV_CTL_IOCTL_ELEM_INFO _IOWR('U', 0x11, struct snd_ctl_elem_info) 1169 #define SNDRV_CTL_IOCTL_ELEM_READ _IOWR('U', 0x12, struct snd_ctl_elem_value) 1170 #define SNDRV_CTL_IOCTL_ELEM_WRITE _IOWR('U', 0x13, struct snd_ctl_elem_value) 1171 #define SNDRV_CTL_IOCTL_ELEM_LOCK _IOW('U', 0x14, struct snd_ctl_elem_id) 1172 #define SNDRV_CTL_IOCTL_ELEM_UNLOCK _IOW('U', 0x15, struct snd_ctl_elem_id) 1173 #define SNDRV_CTL_IOCTL_SUBSCRIBE_EVENTS _IOWR('U', 0x16, int) 1174 #define SNDRV_CTL_IOCTL_ELEM_ADD _IOWR('U', 0x17, struct snd_ctl_elem_info) 1175 #define SNDRV_CTL_IOCTL_ELEM_REPLACE _IOWR('U', 0x18, struct snd_ctl_elem_info) 1176 #define SNDRV_CTL_IOCTL_ELEM_REMOVE _IOWR('U', 0x19, struct snd_ctl_elem_id) 1177 #define SNDRV_CTL_IOCTL_TLV_READ _IOWR('U', 0x1a, struct snd_ctl_tlv) 1178 #define SNDRV_CTL_IOCTL_TLV_WRITE _IOWR('U', 0x1b, struct snd_ctl_tlv) 1179 #define SNDRV_CTL_IOCTL_TLV_COMMAND _IOWR('U', 0x1c, struct snd_ctl_tlv) 1180 #define SNDRV_CTL_IOCTL_HWDEP_NEXT_DEVICE _IOWR('U', 0x20, int) 1181 #define SNDRV_CTL_IOCTL_HWDEP_INFO _IOR('U', 0x21, struct snd_hwdep_info) 1182 #define SNDRV_CTL_IOCTL_PCM_NEXT_DEVICE _IOR('U', 0x30, int) 1183 #define SNDRV_CTL_IOCTL_PCM_INFO _IOWR('U', 0x31, struct snd_pcm_info) 1184 #define SNDRV_CTL_IOCTL_PCM_PREFER_SUBDEVICE _IOW('U', 0x32, int) 1185 #define SNDRV_CTL_IOCTL_RAWMIDI_NEXT_DEVICE _IOWR('U', 0x40, int) 1186 #define SNDRV_CTL_IOCTL_RAWMIDI_INFO _IOWR('U', 0x41, struct snd_rawmidi_info) 1187 #define SNDRV_CTL_IOCTL_RAWMIDI_PREFER_SUBDEVICE _IOW('U', 0x42, int) 1188 #define SNDRV_CTL_IOCTL_UMP_NEXT_DEVICE _IOWR('U', 0x43, int) 1189 #define SNDRV_CTL_IOCTL_UMP_ENDPOINT_INFO _IOWR('U', 0x44, struct snd_ump_endpoint_info) 1190 #define SNDRV_CTL_IOCTL_UMP_BLOCK_INFO _IOWR('U', 0x45, struct snd_ump_block_info) 1191 #define SNDRV_CTL_IOCTL_POWER _IOWR('U', 0xd0, int) 1192 #define SNDRV_CTL_IOCTL_POWER_STATE _IOR('U', 0xd1, int) 1193 1194 /* 1195 * Read interface. 1196 */ 1197 1198 enum sndrv_ctl_event_type { 1199 SNDRV_CTL_EVENT_ELEM = 0, 1200 SNDRV_CTL_EVENT_LAST = SNDRV_CTL_EVENT_ELEM, 1201 }; 1202 1203 #define SNDRV_CTL_EVENT_MASK_VALUE (1<<0) /* element value was changed */ 1204 #define SNDRV_CTL_EVENT_MASK_INFO (1<<1) /* element info was changed */ 1205 #define SNDRV_CTL_EVENT_MASK_ADD (1<<2) /* element was added */ 1206 #define SNDRV_CTL_EVENT_MASK_TLV (1<<3) /* element TLV tree was changed */ 1207 #define SNDRV_CTL_EVENT_MASK_REMOVE (~0U) /* element was removed */ 1208 1209 struct snd_ctl_event { 1210 int type; /* event type - SNDRV_CTL_EVENT_* */ 1211 union { 1212 struct { 1213 unsigned int mask; 1214 struct snd_ctl_elem_id id; 1215 } elem; 1216 unsigned char data8[60]; 1217 } data; 1218 }; 1219 1220 /* 1221 * Control names 1222 */ 1223 1224 #define SNDRV_CTL_NAME_NONE "" 1225 #define SNDRV_CTL_NAME_PLAYBACK "Playback " 1226 #define SNDRV_CTL_NAME_CAPTURE "Capture " 1227 1228 #define SNDRV_CTL_NAME_IEC958_NONE "" 1229 #define SNDRV_CTL_NAME_IEC958_SWITCH "Switch" 1230 #define SNDRV_CTL_NAME_IEC958_VOLUME "Volume" 1231 #define SNDRV_CTL_NAME_IEC958_DEFAULT "Default" 1232 #define SNDRV_CTL_NAME_IEC958_MASK "Mask" 1233 #define SNDRV_CTL_NAME_IEC958_CON_MASK "Con Mask" 1234 #define SNDRV_CTL_NAME_IEC958_PRO_MASK "Pro Mask" 1235 #define SNDRV_CTL_NAME_IEC958_PCM_STREAM "PCM Stream" 1236 #define SNDRV_CTL_NAME_IEC958(expl,direction,what) "IEC958 " expl SNDRV_CTL_NAME_##direction SNDRV_CTL_NAME_IEC958_##what 1237 1238 #endif /* __SOUND_ASOUND_H */
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