/* * Advanced Linux Sound Architecture - ALSA - Driver * Copyright (c) 1994-2003 by Jaroslav Kysela , * Abramo Bagnara * * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * */ #ifndef __SOUND_ASOUND_H #define __SOUND_ASOUND_H #if defined(LINUX) || defined(__LINUX__) || defined(__linux__) #include #ifdef __KERNEL__ #include #include #include #if __LITTLE_ENDIAN == 1234 #define SNDRV_LITTLE_ENDIAN #elif __BIG_ENDIAN == 4321 #define SNDRV_BIG_ENDIAN #else #error "Unsupported endian..." #endif #else /* !__KERNEL__ */ #include #if __BYTE_ORDER == __LITTLE_ENDIAN #define SNDRV_LITTLE_ENDIAN #elif __BYTE_ORDER == __BIG_ENDIAN #define SNDRV_BIG_ENDIAN #else #error "Unsupported endian..." #endif #endif /* __KERNEL **/ #endif /* LINUX */ #ifndef __KERNEL__ #include #include #include #endif /* * protocol version */ #define SNDRV_PROTOCOL_VERSION(major, minor, subminor) (((major)<<16)|((minor)<<8)|(subminor)) #define SNDRV_PROTOCOL_MAJOR(version) (((version)>>16)&0xffff) #define SNDRV_PROTOCOL_MINOR(version) (((version)>>8)&0xff) #define SNDRV_PROTOCOL_MICRO(version) ((version)&0xff) #define SNDRV_PROTOCOL_INCOMPATIBLE(kversion, uversion) \ (SNDRV_PROTOCOL_MAJOR(kversion) != SNDRV_PROTOCOL_MAJOR(uversion) || \ (SNDRV_PROTOCOL_MAJOR(kversion) == SNDRV_PROTOCOL_MAJOR(uversion) && \ SNDRV_PROTOCOL_MINOR(kversion) != SNDRV_PROTOCOL_MINOR(uversion))) /**************************************************************************** * * * Digital audio interface * * * ****************************************************************************/ struct sndrv_aes_iec958 { unsigned char status[24]; /* AES/IEC958 channel status bits */ unsigned char subcode[147]; /* AES/IEC958 subcode bits */ unsigned char pad; /* nothing */ unsigned char dig_subframe[4]; /* AES/IEC958 subframe bits */ }; /**************************************************************************** * * * Section for driver hardware dependent interface - /dev/snd/hw? * * * ****************************************************************************/ #define SNDRV_HWDEP_VERSION SNDRV_PROTOCOL_VERSION(1, 0, 1) enum sndrv_hwdep_iface { SNDRV_HWDEP_IFACE_OPL2 = 0, SNDRV_HWDEP_IFACE_OPL3, SNDRV_HWDEP_IFACE_OPL4, SNDRV_HWDEP_IFACE_SB16CSP, /* Creative Signal Processor */ SNDRV_HWDEP_IFACE_EMU10K1, /* FX8010 processor in EMU10K1 chip */ SNDRV_HWDEP_IFACE_YSS225, /* Yamaha FX processor */ SNDRV_HWDEP_IFACE_ICS2115, /* Wavetable synth */ SNDRV_HWDEP_IFACE_SSCAPE, /* Ensoniq SoundScape ISA card (MC68EC000) */ SNDRV_HWDEP_IFACE_VX, /* Digigram VX cards */ SNDRV_HWDEP_IFACE_MIXART, /* Digigram miXart cards */ SNDRV_HWDEP_IFACE_USX2Y, /* Tascam US122, US224 & US428 usb */ SNDRV_HWDEP_IFACE_EMUX_WAVETABLE, /* EmuX wavetable */ SNDRV_HWDEP_IFACE_BLUETOOTH, /* Bluetooth audio */ SNDRV_HWDEP_IFACE_USX2Y_PCM, /* Tascam US122, US224 & US428 rawusb pcm */ SNDRV_HWDEP_IFACE_PCXHR, /* Digigram PCXHR */ SNDRV_HWDEP_IFACE_SB_RC, /* SB Extigy/Audigy2NX remote control */ /* Don't forget to change the following: */ SNDRV_HWDEP_IFACE_LAST = SNDRV_HWDEP_IFACE_SB_RC }; struct sndrv_hwdep_info { unsigned int device; /* WR: device number */ int card; /* R: card number */ unsigned char id[64]; /* ID (user selectable) */ unsigned char name[80]; /* hwdep name */ int iface; /* hwdep interface */ unsigned char reserved[64]; /* reserved for future */ }; /* generic DSP loader */ struct sndrv_hwdep_dsp_status { unsigned int version; /* R: driver-specific version */ unsigned char id[32]; /* R: driver-specific ID string */ unsigned int num_dsps; /* R: number of DSP images to transfer */ unsigned int dsp_loaded; /* R: bit flags indicating the loaded DSPs */ unsigned int chip_ready; /* R: 1 = initialization finished */ unsigned char reserved[16]; /* reserved for future use */ }; struct sndrv_hwdep_dsp_image { unsigned int index; /* W: DSP index */ unsigned char name[64]; /* W: ID (e.g. file name) */ unsigned char *image; /* W: binary image */ size_t length; /* W: size of image in bytes */ unsigned long driver_data; /* W: driver-specific data */ }; enum { SNDRV_HWDEP_IOCTL_PVERSION = _IOR ('H', 0x00, int), SNDRV_HWDEP_IOCTL_INFO = _IOR ('H', 0x01, struct sndrv_hwdep_info), SNDRV_HWDEP_IOCTL_DSP_STATUS = _IOR('H', 0x02, struct sndrv_hwdep_dsp_status), SNDRV_HWDEP_IOCTL_DSP_LOAD = _IOW('H', 0x03, struct sndrv_hwdep_dsp_image) }; /***************************************************************************** * * * Digital Audio (PCM) interface - /dev/snd/pcm?? * * * *****************************************************************************/ #define SNDRV_PCM_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 9) typedef unsigned long sndrv_pcm_uframes_t; typedef long sndrv_pcm_sframes_t; enum sndrv_pcm_class { SNDRV_PCM_CLASS_GENERIC = 0, /* standard mono or stereo device */ SNDRV_PCM_CLASS_MULTI, /* multichannel device */ SNDRV_PCM_CLASS_MODEM, /* software modem class */ SNDRV_PCM_CLASS_DIGITIZER, /* digitizer class */ /* Don't forget to change the following: */ SNDRV_PCM_CLASS_LAST = SNDRV_PCM_CLASS_DIGITIZER, }; enum sndrv_pcm_subclass { SNDRV_PCM_SUBCLASS_GENERIC_MIX = 0, /* mono or stereo subdevices are mixed together */ SNDRV_PCM_SUBCLASS_MULTI_MIX, /* multichannel subdevices are mixed together */ /* Don't forget to change the following: */ SNDRV_PCM_SUBCLASS_LAST = SNDRV_PCM_SUBCLASS_MULTI_MIX, }; enum sndrv_pcm_stream { SNDRV_PCM_STREAM_PLAYBACK = 0, SNDRV_PCM_STREAM_CAPTURE, SNDRV_PCM_STREAM_LAST = SNDRV_PCM_STREAM_CAPTURE, }; enum sndrv_pcm_access { SNDRV_PCM_ACCESS_MMAP_INTERLEAVED = 0, /* interleaved mmap */ SNDRV_PCM_ACCESS_MMAP_NONINTERLEAVED, /* noninterleaved mmap */ SNDRV_PCM_ACCESS_MMAP_COMPLEX, /* complex mmap */ SNDRV_PCM_ACCESS_RW_INTERLEAVED, /* readi/writei */ SNDRV_PCM_ACCESS_RW_NONINTERLEAVED, /* readn/writen */ SNDRV_PCM_ACCESS_LAST = SNDRV_PCM_ACCESS_RW_NONINTERLEAVED, }; enum sndrv_pcm_format { SNDRV_PCM_FORMAT_S8 = 0, SNDRV_PCM_FORMAT_U8, SNDRV_PCM_FORMAT_S16_LE, SNDRV_PCM_FORMAT_S16_BE, SNDRV_PCM_FORMAT_U16_LE, SNDRV_PCM_FORMAT_U16_BE, SNDRV_PCM_FORMAT_S24_LE, /* low three bytes */ SNDRV_PCM_FORMAT_S24_BE, /* low three bytes */ SNDRV_PCM_FORMAT_U24_LE, /* low three bytes */ SNDRV_PCM_FORMAT_U24_BE, /* low three bytes */ SNDRV_PCM_FORMAT_S32_LE, SNDRV_PCM_FORMAT_S32_BE, SNDRV_PCM_FORMAT_U32_LE, SNDRV_PCM_FORMAT_U32_BE, SNDRV_PCM_FORMAT_FLOAT_LE, /* 4-byte float, IEEE-754 32-bit, range -1.0 to 1.0 */ SNDRV_PCM_FORMAT_FLOAT_BE, /* 4-byte float, IEEE-754 32-bit, range -1.0 to 1.0 */ SNDRV_PCM_FORMAT_FLOAT64_LE, /* 8-byte float, IEEE-754 64-bit, range -1.0 to 1.0 */ SNDRV_PCM_FORMAT_FLOAT64_BE, /* 8-byte float, IEEE-754 64-bit, range -1.0 to 1.0 */ SNDRV_PCM_FORMAT_IEC958_SUBFRAME_LE, /* IEC-958 subframe, Little Endian */ SNDRV_PCM_FORMAT_IEC958_SUBFRAME_BE, /* IEC-958 subframe, Big Endian */ SNDRV_PCM_FORMAT_MU_LAW, SNDRV_PCM_FORMAT_A_LAW, SNDRV_PCM_FORMAT_IMA_ADPCM, SNDRV_PCM_FORMAT_MPEG, SNDRV_PCM_FORMAT_GSM, SNDRV_PCM_FORMAT_SPECIAL = 31, SNDRV_PCM_FORMAT_S24_3LE = 32, /* in three bytes */ SNDRV_PCM_FORMAT_S24_3BE, /* in three bytes */ SNDRV_PCM_FORMAT_U24_3LE, /* in three bytes */ SNDRV_PCM_FORMAT_U24_3BE, /* in three bytes */ SNDRV_PCM_FORMAT_S20_3LE, /* in three bytes */ SNDRV_PCM_FORMAT_S20_3BE, /* in three bytes */ SNDRV_PCM_FORMAT_U20_3LE, /* in three bytes */ SNDRV_PCM_FORMAT_U20_3BE, /* in three bytes */ SNDRV_PCM_FORMAT_S18_3LE, /* in three bytes */ SNDRV_PCM_FORMAT_S18_3BE, /* in three bytes */ SNDRV_PCM_FORMAT_U18_3LE, /* in three bytes */ SNDRV_PCM_FORMAT_U18_3BE, /* in three bytes */ SNDRV_PCM_FORMAT_LAST = SNDRV_PCM_FORMAT_U18_3BE, #ifdef SNDRV_LITTLE_ENDIAN SNDRV_PCM_FORMAT_S16 = SNDRV_PCM_FORMAT_S16_LE, SNDRV_PCM_FORMAT_U16 = SNDRV_PCM_FORMAT_U16_LE, SNDRV_PCM_FORMAT_S24 = SNDRV_PCM_FORMAT_S24_LE, SNDRV_PCM_FORMAT_U24 = SNDRV_PCM_FORMAT_U24_LE, SNDRV_PCM_FORMAT_S32 = SNDRV_PCM_FORMAT_S32_LE, SNDRV_PCM_FORMAT_U32 = SNDRV_PCM_FORMAT_U32_LE, SNDRV_PCM_FORMAT_FLOAT = SNDRV_PCM_FORMAT_FLOAT_LE, SNDRV_PCM_FORMAT_FLOAT64 = SNDRV_PCM_FORMAT_FLOAT64_LE, SNDRV_PCM_FORMAT_IEC958_SUBFRAME = SNDRV_PCM_FORMAT_IEC958_SUBFRAME_LE, #endif #ifdef SNDRV_BIG_ENDIAN SNDRV_PCM_FORMAT_S16 = SNDRV_PCM_FORMAT_S16_BE, SNDRV_PCM_FORMAT_U16 = SNDRV_PCM_FORMAT_U16_BE, SNDRV_PCM_FORMAT_S24 = SNDRV_PCM_FORMAT_S24_BE, SNDRV_PCM_FORMAT_U24 = SNDRV_PCM_FORMAT_U24_BE, SNDRV_PCM_FORMAT_S32 = SNDRV_PCM_FORMAT_S32_BE, SNDRV_PCM_FORMAT_U32 = SNDRV_PCM_FORMAT_U32_BE, SNDRV_PCM_FORMAT_FLOAT = SNDRV_PCM_FORMAT_FLOAT_BE, SNDRV_PCM_FORMAT_FLOAT64 = SNDRV_PCM_FORMAT_FLOAT64_BE, SNDRV_PCM_FORMAT_IEC958_SUBFRAME = SNDRV_PCM_FORMAT_IEC958_SUBFRAME_BE, #endif }; enum sndrv_pcm_subformat { SNDRV_PCM_SUBFORMAT_STD = 0, SNDRV_PCM_SUBFORMAT_LAST = SNDRV_PCM_SUBFORMAT_STD, }; #define SNDRV_PCM_INFO_MMAP 0x00000001 /* hardware supports mmap */ #define SNDRV_PCM_INFO_MMAP_VALID 0x00000002 /* period data are valid during transfer */ #define SNDRV_PCM_INFO_DOUBLE 0x00000004 /* Double buffering needed for PCM start/stop */ #define SNDRV_PCM_INFO_BATCH 0x00000010 /* double buffering */ #define SNDRV_PCM_INFO_INTERLEAVED 0x00000100 /* channels are interleaved */ #define SNDRV_PCM_INFO_NONINTERLEAVED 0x00000200 /* channels are not interleaved */ #define SNDRV_PCM_INFO_COMPLEX 0x00000400 /* complex frame organization (mmap only) */ #define SNDRV_PCM_INFO_BLOCK_TRANSFER 0x00010000 /* hardware transfer block of samples */ #define SNDRV_PCM_INFO_OVERRANGE 0x00020000 /* hardware supports ADC (capture) overrange detection */ #define SNDRV_PCM_INFO_RESUME 0x00040000 /* hardware supports stream resume after suspend */ #define SNDRV_PCM_INFO_PAUSE 0x00080000 /* pause ioctl is supported */ #define SNDRV_PCM_INFO_HALF_DUPLEX 0x00100000 /* only half duplex */ #define SNDRV_PCM_INFO_JOINT_DUPLEX 0x00200000 /* playback and capture stream are somewhat correlated */ #define SNDRV_PCM_INFO_SYNC_START 0x00400000 /* pcm support some kind of sync go */ #define SNDRV_PCM_INFO_NO_PERIOD_WAKEUP 0x00800000 /* period wakeup can be disabled */ enum sndrv_pcm_state { SNDRV_PCM_STATE_OPEN = 0, /* stream is open */ SNDRV_PCM_STATE_SETUP, /* stream has a setup */ SNDRV_PCM_STATE_PREPARED, /* stream is ready to start */ SNDRV_PCM_STATE_RUNNING, /* stream is running */ SNDRV_PCM_STATE_XRUN, /* stream reached an xrun */ SNDRV_PCM_STATE_DRAINING, /* stream is draining */ SNDRV_PCM_STATE_PAUSED, /* stream is paused */ SNDRV_PCM_STATE_SUSPENDED, /* hardware is suspended */ SNDRV_PCM_STATE_DISCONNECTED, /* hardware is disconnected */ SNDRV_PCM_STATE_LAST = SNDRV_PCM_STATE_DISCONNECTED, }; enum { SNDRV_PCM_MMAP_OFFSET_DATA = 0x00000000, SNDRV_PCM_MMAP_OFFSET_STATUS = 0x80000000, SNDRV_PCM_MMAP_OFFSET_CONTROL = 0x81000000, }; union sndrv_pcm_sync_id { unsigned char id[16]; unsigned short id16[8]; unsigned int id32[4]; }; struct sndrv_pcm_info { unsigned int device; /* RO/WR (control): device number */ unsigned int subdevice; /* RO/WR (control): subdevice number */ int stream; /* RO/WR (control): stream number */ int card; /* R: card number */ unsigned char id[64]; /* ID (user selectable) */ unsigned char name[80]; /* name of this device */ unsigned char subname[32]; /* subdevice name */ int dev_class; /* SNDRV_PCM_CLASS_* */ int dev_subclass; /* SNDRV_PCM_SUBCLASS_* */ unsigned int subdevices_count; unsigned int subdevices_avail; union sndrv_pcm_sync_id sync; /* hardware synchronization ID */ unsigned char reserved[64]; /* reserved for future... */ }; enum sndrv_pcm_hw_param { SNDRV_PCM_HW_PARAM_ACCESS = 0, /* Access type */ SNDRV_PCM_HW_PARAM_FIRST_MASK = SNDRV_PCM_HW_PARAM_ACCESS, SNDRV_PCM_HW_PARAM_FORMAT, /* Format */ SNDRV_PCM_HW_PARAM_SUBFORMAT, /* Subformat */ SNDRV_PCM_HW_PARAM_LAST_MASK = SNDRV_PCM_HW_PARAM_SUBFORMAT, SNDRV_PCM_HW_PARAM_SAMPLE_BITS = 8, /* Bits per sample */ SNDRV_PCM_HW_PARAM_FIRST_INTERVAL = SNDRV_PCM_HW_PARAM_SAMPLE_BITS, SNDRV_PCM_HW_PARAM_FRAME_BITS, /* Bits per frame */ SNDRV_PCM_HW_PARAM_CHANNELS, /* Channels */ SNDRV_PCM_HW_PARAM_RATE, /* Approx rate */ SNDRV_PCM_HW_PARAM_PERIOD_TIME, /* Approx distance between interrupts in us */ SNDRV_PCM_HW_PARAM_PERIOD_SIZE, /* Approx frames between interrupts */ SNDRV_PCM_HW_PARAM_PERIOD_BYTES, /* Approx bytes between interrupts */ SNDRV_PCM_HW_PARAM_PERIODS, /* Approx interrupts per buffer */ SNDRV_PCM_HW_PARAM_BUFFER_TIME, /* Approx duration of buffer in us */ SNDRV_PCM_HW_PARAM_BUFFER_SIZE, /* Size of buffer in frames */ SNDRV_PCM_HW_PARAM_BUFFER_BYTES, /* Size of buffer in bytes */ SNDRV_PCM_HW_PARAM_TICK_TIME, /* Approx tick duration in us */ SNDRV_PCM_HW_PARAM_LAST_INTERVAL = SNDRV_PCM_HW_PARAM_TICK_TIME }; #define SNDRV_PCM_HW_PARAMS_NORESAMPLE (1<<0) /* avoid rate resampling */ #define SNDRV_PCM_HW_PARAMS_EXPORT_BUFFER (1<<1) /* export buffer */ #define SNDRV_PCM_HW_PARAMS_NO_PERIOD_WAKEUP (1<<2) /* disable period wakeups */ struct sndrv_interval { unsigned int min, max; unsigned int openmin:1, openmax:1, integer:1, empty:1; }; #define SNDRV_MASK_MAX 256 struct sndrv_mask { u_int32_t bits[(SNDRV_MASK_MAX+31)/32]; }; struct sndrv_pcm_hw_params { unsigned int flags; struct sndrv_mask masks[SNDRV_PCM_HW_PARAM_LAST_MASK - SNDRV_PCM_HW_PARAM_FIRST_MASK + 1]; struct sndrv_mask mres[5]; /* reserved masks */ struct sndrv_interval intervals[SNDRV_PCM_HW_PARAM_LAST_INTERVAL - SNDRV_PCM_HW_PARAM_FIRST_INTERVAL + 1]; struct sndrv_interval ires[9]; /* reserved intervals */ unsigned int rmask; /* W: requested masks */ unsigned int cmask; /* R: changed masks */ unsigned int info; /* R: Info flags for returned setup */ unsigned int msbits; /* R: used most significant bits */ unsigned int rate_num; /* R: rate numerator */ unsigned int rate_den; /* R: rate denominator */ sndrv_pcm_uframes_t fifo_size; /* R: chip FIFO size in frames */ unsigned char reserved[64]; /* reserved for future */ }; enum sndrv_pcm_tstamp { SNDRV_PCM_TSTAMP_NONE = 0, SNDRV_PCM_TSTAMP_ENABLE, SNDRV_PCM_TSTAMP_LAST = SNDRV_PCM_TSTAMP_ENABLE, }; struct sndrv_pcm_sw_params { int tstamp_mode; /* timestamp mode */ unsigned int period_step; unsigned int sleep_min; /* min ticks to sleep */ sndrv_pcm_uframes_t avail_min; /* min avail frames for wakeup */ sndrv_pcm_uframes_t xfer_align; /* xfer size need to be a multiple */ sndrv_pcm_uframes_t start_threshold; /* min hw_avail frames for automatic start */ sndrv_pcm_uframes_t stop_threshold; /* min avail frames for automatic stop */ sndrv_pcm_uframes_t silence_threshold; /* min distance from noise for silence filling */ sndrv_pcm_uframes_t silence_size; /* silence block size */ sndrv_pcm_uframes_t boundary; /* pointers wrap point */ unsigned char reserved[60]; /* reserved for future */ unsigned int period_event; /* for alsa-lib implementation */ }; struct sndrv_pcm_channel_info { unsigned int channel; long offset; /* mmap offset */ unsigned int first; /* offset to first sample in bits */ unsigned int step; /* samples distance in bits */ }; struct sndrv_pcm_status { int state; /* stream state */ struct timespec trigger_tstamp; /* time when stream was started/stopped/paused */ struct timespec tstamp; /* reference timestamp */ sndrv_pcm_uframes_t appl_ptr; /* appl ptr */ sndrv_pcm_uframes_t hw_ptr; /* hw ptr */ sndrv_pcm_sframes_t delay; /* current delay in frames */ sndrv_pcm_uframes_t avail; /* number of frames available */ sndrv_pcm_uframes_t avail_max; /* max frames available on hw since last status */ sndrv_pcm_uframes_t overrange; /* count of ADC (capture) overrange detections from last status */ int suspended_state; /* suspended stream state */ unsigned char reserved[60]; /* must be filled with zero */ }; struct sndrv_pcm_mmap_status { int state; /* RO: state - SNDRV_PCM_STATE_XXXX */ int pad1; /* Needed for 64 bit alignment */ sndrv_pcm_uframes_t hw_ptr; /* RO: hw ptr (0...boundary-1) */ struct timespec tstamp; /* Timestamp */ int suspended_state; /* RO: suspended stream state */ }; struct sndrv_pcm_mmap_control { sndrv_pcm_uframes_t appl_ptr; /* RW: appl ptr (0...boundary-1) */ sndrv_pcm_uframes_t avail_min; /* RW: min available frames for wakeup */ }; #define SNDRV_PCM_SYNC_PTR_HWSYNC (1<<0) /* execute hwsync */ #define SNDRV_PCM_SYNC_PTR_APPL (1<<1) /* get appl_ptr from driver (r/w op) */ #define SNDRV_PCM_SYNC_PTR_AVAIL_MIN (1<<2) /* get avail_min from driver */ struct sndrv_pcm_sync_ptr { unsigned int flags; union { struct sndrv_pcm_mmap_status status; unsigned char reserved[64]; } s; union { struct sndrv_pcm_mmap_control control; unsigned char reserved[64]; } c; }; struct sndrv_xferi { sndrv_pcm_sframes_t result; void *buf; sndrv_pcm_uframes_t frames; }; struct sndrv_xfern { sndrv_pcm_sframes_t result; void **bufs; sndrv_pcm_uframes_t frames; }; enum { SNDRV_PCM_TSTAMP_TYPE_GETTIMEOFDAY = 0, /* gettimeofday equivalent */ SNDRV_PCM_TSTAMP_TYPE_MONOTONIC, /* posix_clock_monotonic equivalent */ SNDRV_PCM_TSTAMP_TYPE_LAST = SNDRV_PCM_TSTAMP_TYPE_MONOTONIC, }; enum { SNDRV_PCM_IOCTL_PVERSION = _IOR('A', 0x00, int), SNDRV_PCM_IOCTL_INFO = _IOR('A', 0x01, struct sndrv_pcm_info), SNDRV_PCM_IOCTL_TSTAMP = _IOW('A', 0x02, int), SNDRV_PCM_IOCTL_TTSTAMP = _IOW('A', 0x03, int), SNDRV_PCM_IOCTL_HW_REFINE = _IOWR('A', 0x10, struct sndrv_pcm_hw_params), SNDRV_PCM_IOCTL_HW_PARAMS = _IOWR('A', 0x11, struct sndrv_pcm_hw_params), SNDRV_PCM_IOCTL_HW_FREE = _IO('A', 0x12), SNDRV_PCM_IOCTL_SW_PARAMS = _IOWR('A', 0x13, struct sndrv_pcm_sw_params), SNDRV_PCM_IOCTL_STATUS = _IOR('A', 0x20, struct sndrv_pcm_status), SNDRV_PCM_IOCTL_DELAY = _IOR('A', 0x21, sndrv_pcm_sframes_t), SNDRV_PCM_IOCTL_HWSYNC = _IO('A', 0x22), SNDRV_PCM_IOCTL_SYNC_PTR = _IOWR('A', 0x23, struct sndrv_pcm_sync_ptr), SNDRV_PCM_IOCTL_CHANNEL_INFO = _IOR('A', 0x32, struct sndrv_pcm_channel_info), SNDRV_PCM_IOCTL_PREPARE = _IO('A', 0x40), SNDRV_PCM_IOCTL_RESET = _IO('A', 0x41), SNDRV_PCM_IOCTL_START = _IO('A', 0x42), SNDRV_PCM_IOCTL_DROP = _IO('A', 0x43), SNDRV_PCM_IOCTL_DRAIN = _IO('A', 0x44), SNDRV_PCM_IOCTL_PAUSE = _IOW('A', 0x45, int), SNDRV_PCM_IOCTL_REWIND = _IOW('A', 0x46, sndrv_pcm_uframes_t), SNDRV_PCM_IOCTL_RESUME = _IO('A', 0x47), SNDRV_PCM_IOCTL_XRUN = _IO('A', 0x48), SNDRV_PCM_IOCTL_FORWARD = _IOW('A', 0x49, sndrv_pcm_uframes_t), SNDRV_PCM_IOCTL_WRITEI_FRAMES = _IOW('A', 0x50, struct sndrv_xferi), SNDRV_PCM_IOCTL_READI_FRAMES = _IOR('A', 0x51, struct sndrv_xferi), SNDRV_PCM_IOCTL_WRITEN_FRAMES = _IOW('A', 0x52, struct sndrv_xfern), SNDRV_PCM_IOCTL_READN_FRAMES = _IOR('A', 0x53, struct sndrv_xfern), SNDRV_PCM_IOCTL_LINK = _IOW('A', 0x60, int), SNDRV_PCM_IOCTL_UNLINK = _IO('A', 0x61), }; /* Trick to make alsa-lib/acinclude.m4 happy */ #define SNDRV_PCM_IOCTL_REWIND SNDRV_PCM_IOCTL_REWIND /***************************************************************************** * * * MIDI v1.0 interface * * * *****************************************************************************/ /* * Raw MIDI section - /dev/snd/midi?? */ #define SNDRV_RAWMIDI_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 0) enum sndrv_rawmidi_stream { SNDRV_RAWMIDI_STREAM_OUTPUT = 0, SNDRV_RAWMIDI_STREAM_INPUT, SNDRV_RAWMIDI_STREAM_LAST = SNDRV_RAWMIDI_STREAM_INPUT, }; #define SNDRV_RAWMIDI_INFO_OUTPUT 0x00000001 #define SNDRV_RAWMIDI_INFO_INPUT 0x00000002 #define SNDRV_RAWMIDI_INFO_DUPLEX 0x00000004 struct sndrv_rawmidi_info { unsigned int device; /* RO/WR (control): device number */ unsigned int subdevice; /* RO/WR (control): subdevice number */ int stream; /* WR: stream */ int card; /* R: card number */ unsigned int flags; /* SNDRV_RAWMIDI_INFO_XXXX */ unsigned char id[64]; /* ID (user selectable) */ unsigned char name[80]; /* name of device */ unsigned char subname[32]; /* name of active or selected subdevice */ unsigned int subdevices_count; unsigned int subdevices_avail; unsigned char reserved[64]; /* reserved for future use */ }; struct sndrv_rawmidi_params { int stream; size_t buffer_size; /* queue size in bytes */ size_t avail_min; /* minimum avail bytes for wakeup */ unsigned int no_active_sensing: 1; /* do not send active sensing byte in close() */ unsigned char reserved[16]; /* reserved for future use */ }; struct sndrv_rawmidi_status { int stream; struct timespec tstamp; /* Timestamp */ size_t avail; /* available bytes */ size_t xruns; /* count of overruns since last status (in bytes) */ unsigned char reserved[16]; /* reserved for future use */ }; enum { SNDRV_RAWMIDI_IOCTL_PVERSION = _IOR('W', 0x00, int), SNDRV_RAWMIDI_IOCTL_INFO = _IOR('W', 0x01, struct sndrv_rawmidi_info), SNDRV_RAWMIDI_IOCTL_PARAMS = _IOWR('W', 0x10, struct sndrv_rawmidi_params), SNDRV_RAWMIDI_IOCTL_STATUS = _IOWR('W', 0x20, struct sndrv_rawmidi_status), SNDRV_RAWMIDI_IOCTL_DROP = _IOW('W', 0x30, int), SNDRV_RAWMIDI_IOCTL_DRAIN = _IOW('W', 0x31, int), }; /* * Timer section - /dev/snd/timer */ #define SNDRV_TIMER_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 5) enum sndrv_timer_class { SNDRV_TIMER_CLASS_NONE = -1, SNDRV_TIMER_CLASS_SLAVE = 0, SNDRV_TIMER_CLASS_GLOBAL, SNDRV_TIMER_CLASS_CARD, SNDRV_TIMER_CLASS_PCM, SNDRV_TIMER_CLASS_LAST = SNDRV_TIMER_CLASS_PCM, }; /* slave timer classes */ enum sndrv_timer_slave_class { SNDRV_TIMER_SCLASS_NONE = 0, SNDRV_TIMER_SCLASS_APPLICATION, SNDRV_TIMER_SCLASS_SEQUENCER, /* alias */ SNDRV_TIMER_SCLASS_OSS_SEQUENCER, /* alias */ SNDRV_TIMER_SCLASS_LAST = SNDRV_TIMER_SCLASS_OSS_SEQUENCER, }; /* global timers (device member) */ #define SNDRV_TIMER_GLOBAL_SYSTEM 0 #define SNDRV_TIMER_GLOBAL_RTC 1 #define SNDRV_TIMER_GLOBAL_HPET 2 #define SNDRV_TIMER_GLOBAL_HRTIMER 3 /* info flags */ #define SNDRV_TIMER_FLG_SLAVE (1<<0) /* cannot be controlled */ struct sndrv_timer_id { int dev_class; int dev_sclass; int card; int device; int subdevice; }; struct sndrv_timer_ginfo { struct sndrv_timer_id tid; /* requested timer ID */ unsigned int flags; /* timer flags - SNDRV_TIMER_FLG_* */ int card; /* card number */ unsigned char id[64]; /* timer identification */ unsigned char name[80]; /* timer name */ unsigned long reserved0; /* reserved for future use */ unsigned long resolution; /* average period resolution in ns */ unsigned long resolution_min; /* minimal period resolution in ns */ unsigned long resolution_max; /* maximal period resolution in ns */ unsigned int clients; /* active timer clients */ unsigned char reserved[32]; }; struct sndrv_timer_gparams { struct sndrv_timer_id tid; /* requested timer ID */ unsigned long period_num; /* requested precise period duration (in seconds) - numerator */ unsigned long period_den; /* requested precise period duration (in seconds) - denominator */ unsigned char reserved[32]; }; struct sndrv_timer_gstatus { struct sndrv_timer_id tid; /* requested timer ID */ unsigned long resolution; /* current period resolution in ns */ unsigned long resolution_num; /* precise current period resolution (in seconds) - numerator */ unsigned long resolution_den; /* precise current period resolution (in seconds) - denominator */ unsigned char reserved[32]; }; struct sndrv_timer_select { struct sndrv_timer_id id; /* bind to timer ID */ unsigned char reserved[32]; /* reserved */ }; struct sndrv_timer_info { unsigned int flags; /* timer flags - SNDRV_TIMER_FLG_* */ int card; /* card number */ unsigned char id[64]; /* timer identificator */ unsigned char name[80]; /* timer name */ unsigned long reserved0; /* reserved for future use */ unsigned long resolution; /* average period resolution in ns */ unsigned char reserved[64]; /* reserved */ }; #define SNDRV_TIMER_PSFLG_AUTO (1<<0) /* auto start, otherwise one-shot */ #define SNDRV_TIMER_PSFLG_EXCLUSIVE (1<<1) /* exclusive use, precise start/stop/pause/continue */ #define SNDRV_TIMER_PSFLG_EARLY_EVENT (1<<2) /* write early event to the poll queue */ struct sndrv_timer_params { unsigned int flags; /* flags - SNDRV_MIXER_PSFLG_* */ unsigned int ticks; /* requested resolution in ticks */ unsigned int queue_size; /* total size of queue (32-1024) */ unsigned int reserved0; /* reserved, was: failure locations */ unsigned int filter; /* event filter (bitmask of SNDRV_TIMER_EVENT_*) */ unsigned char reserved[60]; /* reserved */ }; struct sndrv_timer_status { struct timespec tstamp; /* Timestamp - last update */ unsigned int resolution; /* current period resolution in ns */ unsigned int lost; /* counter of master tick lost */ unsigned int overrun; /* count of read queue overruns */ unsigned int queue; /* used queue size */ unsigned char reserved[64]; /* reserved */ }; enum { SNDRV_TIMER_IOCTL_PVERSION = _IOR('T', 0x00, int), SNDRV_TIMER_IOCTL_NEXT_DEVICE = _IOWR('T', 0x01, struct sndrv_timer_id), SNDRV_TIMER_IOCTL_TREAD = _IOW('T', 0x02, int), SNDRV_TIMER_IOCTL_GINFO = _IOWR('T', 0x03, struct sndrv_timer_ginfo), SNDRV_TIMER_IOCTL_GPARAMS = _IOW('T', 0x04, struct sndrv_timer_gparams), SNDRV_TIMER_IOCTL_GSTATUS = _IOWR('T', 0x05, struct sndrv_timer_gstatus), SNDRV_TIMER_IOCTL_SELECT = _IOW('T', 0x10, struct sndrv_timer_select), SNDRV_TIMER_IOCTL_INFO = _IOR('T', 0x11, struct sndrv_timer_info), SNDRV_TIMER_IOCTL_PARAMS = _IOW('T', 0x12, struct sndrv_timer_params), SNDRV_TIMER_IOCTL_STATUS = _IOR('T', 0x14, struct sndrv_timer_status), /* The following four ioctls are changed since 1.0.9 due to confliction */ SNDRV_TIMER_IOCTL_START = _IO('T', 0xa0), SNDRV_TIMER_IOCTL_STOP = _IO('T', 0xa1), SNDRV_TIMER_IOCTL_CONTINUE = _IO('T', 0xa2), SNDRV_TIMER_IOCTL_PAUSE = _IO('T', 0xa3), }; struct sndrv_timer_read { unsigned int resolution; unsigned int ticks; }; enum sndrv_timer_event { SNDRV_TIMER_EVENT_RESOLUTION = 0, /* val = resolution in ns */ SNDRV_TIMER_EVENT_TICK, /* val = ticks */ SNDRV_TIMER_EVENT_START, /* val = resolution in ns */ SNDRV_TIMER_EVENT_STOP, /* val = 0 */ SNDRV_TIMER_EVENT_CONTINUE, /* val = resolution in ns */ SNDRV_TIMER_EVENT_PAUSE, /* val = 0 */ SNDRV_TIMER_EVENT_EARLY, /* val = 0, early event */ SNDRV_TIMER_EVENT_SUSPEND, /* val = 0 */ SNDRV_TIMER_EVENT_RESUME, /* val = resolution in ns */ /* master timer events for slave timer instances */ SNDRV_TIMER_EVENT_MSTART = SNDRV_TIMER_EVENT_START + 10, SNDRV_TIMER_EVENT_MSTOP = SNDRV_TIMER_EVENT_STOP + 10, SNDRV_TIMER_EVENT_MCONTINUE = SNDRV_TIMER_EVENT_CONTINUE + 10, SNDRV_TIMER_EVENT_MPAUSE = SNDRV_TIMER_EVENT_PAUSE + 10, SNDRV_TIMER_EVENT_MSUSPEND = SNDRV_TIMER_EVENT_SUSPEND + 10, SNDRV_TIMER_EVENT_MRESUME = SNDRV_TIMER_EVENT_RESUME + 10, }; struct sndrv_timer_tread { int event; struct timespec tstamp; unsigned int val; }; /**************************************************************************** * * * Section for driver control interface - /dev/snd/control? * * * ****************************************************************************/ #define SNDRV_CTL_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 6) struct sndrv_ctl_card_info { int card; /* card number */ int pad; /* reserved for future (was type) */ unsigned char id[16]; /* ID of card (user selectable) */ unsigned char driver[16]; /* Driver name */ unsigned char name[32]; /* Short name of soundcard */ unsigned char longname[80]; /* name + info text about soundcard */ unsigned char reserved_[16]; /* reserved for future (was ID of mixer) */ unsigned char mixername[80]; /* visual mixer identification */ unsigned char components[128]; /* card components / fine identification, delimited with one space (AC97 etc..) */ }; enum sndrv_ctl_elem_type { SNDRV_CTL_ELEM_TYPE_NONE = 0, /* invalid */ SNDRV_CTL_ELEM_TYPE_BOOLEAN, /* boolean type */ SNDRV_CTL_ELEM_TYPE_INTEGER, /* integer type */ SNDRV_CTL_ELEM_TYPE_ENUMERATED, /* enumerated type */ SNDRV_CTL_ELEM_TYPE_BYTES, /* byte array */ SNDRV_CTL_ELEM_TYPE_IEC958, /* IEC958 (S/PDIF) setup */ SNDRV_CTL_ELEM_TYPE_INTEGER64, /* 64-bit integer type */ SNDRV_CTL_ELEM_TYPE_LAST = SNDRV_CTL_ELEM_TYPE_INTEGER64, }; enum sndrv_ctl_elem_iface { SNDRV_CTL_ELEM_IFACE_CARD = 0, /* global control */ SNDRV_CTL_ELEM_IFACE_HWDEP, /* hardware dependent device */ SNDRV_CTL_ELEM_IFACE_MIXER, /* virtual mixer device */ SNDRV_CTL_ELEM_IFACE_PCM, /* PCM device */ SNDRV_CTL_ELEM_IFACE_RAWMIDI, /* RawMidi device */ SNDRV_CTL_ELEM_IFACE_TIMER, /* timer device */ SNDRV_CTL_ELEM_IFACE_SEQUENCER, /* sequencer client */ SNDRV_CTL_ELEM_IFACE_LAST = SNDRV_CTL_ELEM_IFACE_SEQUENCER, }; #define SNDRV_CTL_ELEM_ACCESS_READ (1<<0) #define SNDRV_CTL_ELEM_ACCESS_WRITE (1<<1) #define SNDRV_CTL_ELEM_ACCESS_READWRITE (SNDRV_CTL_ELEM_ACCESS_READ|SNDRV_CTL_ELEM_ACCESS_WRITE) #define SNDRV_CTL_ELEM_ACCESS_VOLATILE (1<<2) /* control value may be changed without a notification */ #define SNDRV_CTL_ELEM_ACCESS_TIMESTAMP (1<<3) /* when was control changed */ #define SNDRV_CTL_ELEM_ACCESS_TLV_READ (1<<4) /* TLV read is supported */ #define SNDRV_CTL_ELEM_ACCESS_TLV_WRITE (1<<5) /* TLV write is supported */ #define SNDRV_CTL_ELEM_ACCESS_TLV_READWRITE (SNDRV_CTL_ELEM_ACCESS_TLV_READ|SNDRV_CTL_ELEM_ACCESS_TLV_WRITE) #define SNDRV_CTL_ELEM_ACCESS_TLV_COMMAND (1<<6) /* TLV command is possible */ #define SNDRV_CTL_ELEM_ACCESS_INACTIVE (1<<8) /* control does actually nothing, but may be updated */ #define SNDRV_CTL_ELEM_ACCESS_LOCK (1<<9) /* write lock */ #define SNDRV_CTL_ELEM_ACCESS_OWNER (1<<10) /* write lock owner */ #define SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK (1<<28) /* flag only for kernel */ #define SNDRV_CTL_ELEM_ACCESS_USER (1<<29) /* user space element */ /* bits 30 and 31 are obsoleted (for indirect access) */ /* for further details see the ACPI and PCI power management specification */ #define SNDRV_CTL_POWER_D0 0x0000 /* full On */ #define SNDRV_CTL_POWER_D1 0x0100 /* partial On */ #define SNDRV_CTL_POWER_D2 0x0200 /* partial On */ #define SNDRV_CTL_POWER_D3 0x0300 /* Off */ #define SNDRV_CTL_POWER_D3hot (SNDRV_CTL_POWER_D3|0x0000) /* Off, with power */ #define SNDRV_CTL_POWER_D3cold (SNDRV_CTL_POWER_D3|0x0001) /* Off, without power */ struct sndrv_ctl_elem_id { unsigned int numid; /* numeric identifier, zero = invalid */ int iface; /* interface identifier */ unsigned int device; /* device/client number */ unsigned int subdevice; /* subdevice (substream) number */ unsigned char name[44]; /* ASCII name of item */ unsigned int index; /* index of item */ }; struct sndrv_ctl_elem_list { unsigned int offset; /* W: first element ID to get */ unsigned int space; /* W: count of element IDs to get */ unsigned int used; /* R: count of element IDs set */ unsigned int count; /* R: count of all elements */ struct sndrv_ctl_elem_id *pids; /* R: IDs */ unsigned char reserved[50]; }; struct sndrv_ctl_elem_info { struct sndrv_ctl_elem_id id; /* W: element ID */ int type; /* R: value type - SNDRV_CTL_ELEM_TYPE_* */ unsigned int access; /* R: value access (bitmask) - SNDRV_CTL_ELEM_ACCESS_* */ unsigned int count; /* count of values */ pid_t owner; /* owner's PID of this control */ union { struct { long min; /* R: minimum value */ long max; /* R: maximum value */ long step; /* R: step (0 variable) */ } integer; struct { long long min; /* R: minimum value */ long long max; /* R: maximum value */ long long step; /* R: step (0 variable) */ } integer64; struct { unsigned int items; /* R: number of items */ unsigned int item; /* W: item number */ char name[64]; /* R: value name */ } enumerated; unsigned char reserved[128]; } value; union { unsigned short d[4]; /* dimensions */ unsigned short *d_ptr; /* (obsolete) indirect */ } dimen; unsigned char reserved[64-4*sizeof(unsigned short)]; }; struct sndrv_ctl_elem_value { struct sndrv_ctl_elem_id id; /* W: element ID */ unsigned int indirect: 1; /* (obsolete) W: use indirect pointer (xxx_ptr member) */ union { union { long value[128]; long *value_ptr; /* obsolete */ } integer; union { long long value[64]; long long *value_ptr; /* obsolete */ } integer64; union { unsigned int item[128]; unsigned int *item_ptr; /* obsolete */ } enumerated; union { unsigned char data[512]; unsigned char *data_ptr; /* obsolete */ } bytes; struct sndrv_aes_iec958 iec958; } value; /* RO */ struct timespec tstamp; unsigned char reserved[128-sizeof(struct timespec)]; }; struct sndrv_ctl_tlv { unsigned int numid; /* control element numeric identification */ unsigned int length; /* in bytes aligned to 4 */ unsigned int tlv[0]; /* first TLV */ }; enum { SNDRV_CTL_IOCTL_PVERSION = _IOR('U', 0x00, int), SNDRV_CTL_IOCTL_CARD_INFO = _IOR('U', 0x01, struct sndrv_ctl_card_info), SNDRV_CTL_IOCTL_ELEM_LIST = _IOWR('U', 0x10, struct sndrv_ctl_elem_list), SNDRV_CTL_IOCTL_ELEM_INFO = _IOWR('U', 0x11, struct sndrv_ctl_elem_info), SNDRV_CTL_IOCTL_ELEM_READ = _IOWR('U', 0x12, struct sndrv_ctl_elem_value), SNDRV_CTL_IOCTL_ELEM_WRITE = _IOWR('U', 0x13, struct sndrv_ctl_elem_value), SNDRV_CTL_IOCTL_ELEM_LOCK = _IOW('U', 0x14, struct sndrv_ctl_elem_id), SNDRV_CTL_IOCTL_ELEM_UNLOCK = _IOW('U', 0x15, struct sndrv_ctl_elem_id), SNDRV_CTL_IOCTL_SUBSCRIBE_EVENTS = _IOWR('U', 0x16, int), SNDRV_CTL_IOCTL_ELEM_ADD = _IOWR('U', 0x17, struct sndrv_ctl_elem_info), SNDRV_CTL_IOCTL_ELEM_REPLACE = _IOWR('U', 0x18, struct sndrv_ctl_elem_info), SNDRV_CTL_IOCTL_ELEM_REMOVE = _IOWR('U', 0x19, struct sndrv_ctl_elem_id), SNDRV_CTL_IOCTL_TLV_READ = _IOWR('U', 0x1a, struct sndrv_ctl_tlv), SNDRV_CTL_IOCTL_TLV_WRITE = _IOWR('U', 0x1b, struct sndrv_ctl_tlv), SNDRV_CTL_IOCTL_TLV_COMMAND = _IOWR('U', 0x1c, struct sndrv_ctl_tlv), SNDRV_CTL_IOCTL_HWDEP_NEXT_DEVICE = _IOWR('U', 0x20, int), SNDRV_CTL_IOCTL_HWDEP_INFO = _IOR('U', 0x21, struct sndrv_hwdep_info), SNDRV_CTL_IOCTL_PCM_NEXT_DEVICE = _IOR('U', 0x30, int), SNDRV_CTL_IOCTL_PCM_INFO = _IOWR('U', 0x31, struct sndrv_pcm_info), SNDRV_CTL_IOCTL_PCM_PREFER_SUBDEVICE = _IOW('U', 0x32, int), SNDRV_CTL_IOCTL_RAWMIDI_NEXT_DEVICE = _IOWR('U', 0x40, int), SNDRV_CTL_IOCTL_RAWMIDI_INFO = _IOWR('U', 0x41, struct sndrv_rawmidi_info), SNDRV_CTL_IOCTL_RAWMIDI_PREFER_SUBDEVICE = _IOW('U', 0x42, int), SNDRV_CTL_IOCTL_POWER = _IOWR('U', 0xd0, int), SNDRV_CTL_IOCTL_POWER_STATE = _IOR('U', 0xd1, int), }; /* * Read interface. */ enum sndrv_ctl_event_type { SNDRV_CTL_EVENT_ELEM = 0, SNDRV_CTL_EVENT_LAST = SNDRV_CTL_EVENT_ELEM, }; #define SNDRV_CTL_EVENT_MASK_VALUE (1<<0) /* element value was changed */ #define SNDRV_CTL_EVENT_MASK_INFO (1<<1) /* element info was changed */ #define SNDRV_CTL_EVENT_MASK_ADD (1<<2) /* element was added */ #define SNDRV_CTL_EVENT_MASK_REMOVE (~0U) /* element was removed */ struct sndrv_ctl_event { int type; /* event type - SNDRV_CTL_EVENT_* */ union { struct { unsigned int mask; struct sndrv_ctl_elem_id id; } elem; unsigned char data8[60]; } data; }; /* * Control names */ #define SNDRV_CTL_NAME_NONE "" #define SNDRV_CTL_NAME_PLAYBACK "Playback " #define SNDRV_CTL_NAME_CAPTURE "Capture " #define SNDRV_CTL_NAME_IEC958_NONE "" #define SNDRV_CTL_NAME_IEC958_SWITCH "Switch" #define SNDRV_CTL_NAME_IEC958_VOLUME "Volume" #define SNDRV_CTL_NAME_IEC958_DEFAULT "Default" #define SNDRV_CTL_NAME_IEC958_MASK "Mask" #define SNDRV_CTL_NAME_IEC958_CON_MASK "Con Mask" #define SNDRV_CTL_NAME_IEC958_PRO_MASK "Pro Mask" #define SNDRV_CTL_NAME_IEC958_PCM_STREAM "PCM Stream" #define SNDRV_CTL_NAME_IEC958(expl,direction,what) "IEC958 " expl SNDRV_CTL_NAME_##direction SNDRV_CTL_NAME_IEC958_##what /* * */ struct sndrv_xferv { const struct iovec *vector; unsigned long count; }; enum { SNDRV_IOCTL_READV = _IOW('K', 0x00, struct sndrv_xferv), SNDRV_IOCTL_WRITEV = _IOW('K', 0x01, struct sndrv_xferv), }; #endif /* __SOUND_ASOUND_H */