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asound.h
/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */ /* * Advanced Linux Sound Architecture - ALSA - Driver * Copyright (c) 1994-2003 by Jaroslav Kysela <perex@perex.cz>, * Abramo Bagnara <abramo@alsa-project.org> */ #ifndef __SOUND_ASOUND_H #define __SOUND_ASOUND_H #if defined(__KERNEL__) || defined(__linux__) #include <linux/types.h> #include <asm/byteorder.h> #else #include <endian.h> #include <sys/ioctl.h> #endif #include <stdlib.h> #include <time.h> /* * 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 * * * ****************************************************************************/ #define AES_IEC958_STATUS_SIZE 24 struct snd_aes_iec958 { unsigned char status[AES_IEC958_STATUS_SIZE]; /* 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 */ }; /**************************************************************************** * * * CEA-861 Audio InfoFrame. Used in HDMI and DisplayPort * * * ****************************************************************************/ struct snd_cea_861_aud_if { unsigned char db1_ct_cc; /* coding type and channel count */ unsigned char db2_sf_ss; /* sample frequency and size */ unsigned char db3; /* not used, all zeros */ unsigned char db4_ca; /* channel allocation code */ unsigned char db5_dminh_lsv; /* downmix inhibit & level-shit values */ }; /**************************************************************************** * * * Section for driver hardware dependent interface - /dev/snd/hw? * * * ****************************************************************************/ #define SNDRV_HWDEP_VERSION SNDRV_PROTOCOL_VERSION(1, 0, 1) enum { 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 */ SNDRV_HWDEP_IFACE_HDA, /* HD-audio */ SNDRV_HWDEP_IFACE_USB_STREAM, /* direct access to usb stream */ SNDRV_HWDEP_IFACE_FW_DICE, /* TC DICE FireWire device */ SNDRV_HWDEP_IFACE_FW_FIREWORKS, /* Echo Audio Fireworks based device */ SNDRV_HWDEP_IFACE_FW_BEBOB, /* BridgeCo BeBoB based device */ SNDRV_HWDEP_IFACE_FW_OXFW, /* Oxford OXFW970/971 based device */ SNDRV_HWDEP_IFACE_FW_DIGI00X, /* Digidesign Digi 002/003 family */ SNDRV_HWDEP_IFACE_FW_TASCAM, /* TASCAM FireWire series */ SNDRV_HWDEP_IFACE_LINE6, /* Line6 USB processors */ SNDRV_HWDEP_IFACE_FW_MOTU, /* MOTU FireWire series */ SNDRV_HWDEP_IFACE_FW_FIREFACE, /* RME Fireface series */ /* Don't forget to change the following: */ SNDRV_HWDEP_IFACE_LAST = SNDRV_HWDEP_IFACE_FW_FIREFACE }; struct snd_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 snd_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 snd_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 */ }; #define SNDRV_HWDEP_IOCTL_PVERSION _IOR ('H', 0x00, int) #define SNDRV_HWDEP_IOCTL_INFO _IOR ('H', 0x01, struct snd_hwdep_info) #define SNDRV_HWDEP_IOCTL_DSP_STATUS _IOR('H', 0x02, struct snd_hwdep_dsp_status) #define SNDRV_HWDEP_IOCTL_DSP_LOAD _IOW('H', 0x03, struct snd_hwdep_dsp_image) /***************************************************************************** * * * Digital Audio (PCM) interface - /dev/snd/pcm?? * * * *****************************************************************************/ #define SNDRV_PCM_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 15) typedef unsigned long snd_pcm_uframes_t; typedef signed long snd_pcm_sframes_t; enum { 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_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_PLAYBACK = 0, SNDRV_PCM_STREAM_CAPTURE, SNDRV_PCM_STREAM_LAST = SNDRV_PCM_STREAM_CAPTURE, }; typedef int __bitwise snd_pcm_access_t; #define SNDRV_PCM_ACCESS_MMAP_INTERLEAVED ((snd_pcm_access_t) 0) /* interleaved mmap */ #define SNDRV_PCM_ACCESS_MMAP_NONINTERLEAVED ((snd_pcm_access_t) 1) /* noninterleaved mmap */ #define SNDRV_PCM_ACCESS_MMAP_COMPLEX ((snd_pcm_access_t) 2) /* complex mmap */ #define SNDRV_PCM_ACCESS_RW_INTERLEAVED ((snd_pcm_access_t) 3) /* readi/writei */ #define SNDRV_PCM_ACCESS_RW_NONINTERLEAVED ((snd_pcm_access_t) 4) /* readn/writen */ #define SNDRV_PCM_ACCESS_LAST SNDRV_PCM_ACCESS_RW_NONINTERLEAVED typedef int __bitwise snd_pcm_format_t; #define SNDRV_PCM_FORMAT_S8 ((snd_pcm_format_t) 0) #define SNDRV_PCM_FORMAT_U8 ((snd_pcm_format_t) 1) #define SNDRV_PCM_FORMAT_S16_LE ((snd_pcm_format_t) 2) #define SNDRV_PCM_FORMAT_S16_BE ((snd_pcm_format_t) 3) #define SNDRV_PCM_FORMAT_U16_LE ((snd_pcm_format_t) 4) #define SNDRV_PCM_FORMAT_U16_BE ((snd_pcm_format_t) 5) #define SNDRV_PCM_FORMAT_S24_LE ((snd_pcm_format_t) 6) /* low three bytes */ #define SNDRV_PCM_FORMAT_S24_BE ((snd_pcm_format_t) 7) /* low three bytes */ #define SNDRV_PCM_FORMAT_U24_LE ((snd_pcm_format_t) 8) /* low three bytes */ #define SNDRV_PCM_FORMAT_U24_BE ((snd_pcm_format_t) 9) /* low three bytes */ /* * For S32/U32 formats, 'msbits' hardware parameter is often used to deliver information about the * available bit count in most significant bit. It's for the case of so-called 'left-justified' or * `right-padding` sample which has less width than 32 bit. */ #define SNDRV_PCM_FORMAT_S32_LE ((snd_pcm_format_t) 10) #define SNDRV_PCM_FORMAT_S32_BE ((snd_pcm_format_t) 11) #define SNDRV_PCM_FORMAT_U32_LE ((snd_pcm_format_t) 12) #define SNDRV_PCM_FORMAT_U32_BE ((snd_pcm_format_t) 13) #define SNDRV_PCM_FORMAT_FLOAT_LE ((snd_pcm_format_t) 14) /* 4-byte float, IEEE-754 32-bit, range -1.0 to 1.0 */ #define SNDRV_PCM_FORMAT_FLOAT_BE ((snd_pcm_format_t) 15) /* 4-byte float, IEEE-754 32-bit, range -1.0 to 1.0 */ #define SNDRV_PCM_FORMAT_FLOAT64_LE ((snd_pcm_format_t) 16) /* 8-byte float, IEEE-754 64-bit, range -1.0 to 1.0 */ #define SNDRV_PCM_FORMAT_FLOAT64_BE ((snd_pcm_format_t) 17) /* 8-byte float, IEEE-754 64-bit, range -1.0 to 1.0 */ #define SNDRV_PCM_FORMAT_IEC958_SUBFRAME_LE ((snd_pcm_format_t) 18) /* IEC-958 subframe, Little Endian */ #define SNDRV_PCM_FORMAT_IEC958_SUBFRAME_BE ((snd_pcm_format_t) 19) /* IEC-958 subframe, Big Endian */ #define SNDRV_PCM_FORMAT_MU_LAW ((snd_pcm_format_t) 20) #define SNDRV_PCM_FORMAT_A_LAW ((snd_pcm_format_t) 21) #define SNDRV_PCM_FORMAT_IMA_ADPCM ((snd_pcm_format_t) 22) #define SNDRV_PCM_FORMAT_MPEG ((snd_pcm_format_t) 23) #define SNDRV_PCM_FORMAT_GSM ((snd_pcm_format_t) 24) #define SNDRV_PCM_FORMAT_S20_LE ((snd_pcm_format_t) 25) /* in four bytes, LSB justified */ #define SNDRV_PCM_FORMAT_S20_BE ((snd_pcm_format_t) 26) /* in four bytes, LSB justified */ #define SNDRV_PCM_FORMAT_U20_LE ((snd_pcm_format_t) 27) /* in four bytes, LSB justified */ #define SNDRV_PCM_FORMAT_U20_BE ((snd_pcm_format_t) 28) /* in four bytes, LSB justified */ /* gap in the numbering for a future standard linear format */ #define SNDRV_PCM_FORMAT_SPECIAL ((snd_pcm_format_t) 31) #define SNDRV_PCM_FORMAT_S24_3LE ((snd_pcm_format_t) 32) /* in three bytes */ #define SNDRV_PCM_FORMAT_S24_3BE ((snd_pcm_format_t) 33) /* in three bytes */ #define SNDRV_PCM_FORMAT_U24_3LE ((snd_pcm_format_t) 34) /* in three bytes */ #define SNDRV_PCM_FORMAT_U24_3BE ((snd_pcm_format_t) 35) /* in three bytes */ #define SNDRV_PCM_FORMAT_S20_3LE ((snd_pcm_format_t) 36) /* in three bytes */ #define SNDRV_PCM_FORMAT_S20_3BE ((snd_pcm_format_t) 37) /* in three bytes */ #define SNDRV_PCM_FORMAT_U20_3LE ((snd_pcm_format_t) 38) /* in three bytes */ #define SNDRV_PCM_FORMAT_U20_3BE ((snd_pcm_format_t) 39) /* in three bytes */ #define SNDRV_PCM_FORMAT_S18_3LE ((snd_pcm_format_t) 40) /* in three bytes */ #define SNDRV_PCM_FORMAT_S18_3BE ((snd_pcm_format_t) 41) /* in three bytes */ #define SNDRV_PCM_FORMAT_U18_3LE ((snd_pcm_format_t) 42) /* in three bytes */ #define SNDRV_PCM_FORMAT_U18_3BE ((snd_pcm_format_t) 43) /* in three bytes */ #define SNDRV_PCM_FORMAT_G723_24 ((snd_pcm_format_t) 44) /* 8 samples in 3 bytes */ #define SNDRV_PCM_FORMAT_G723_24_1B ((snd_pcm_format_t) 45) /* 1 sample in 1 byte */ #define SNDRV_PCM_FORMAT_G723_40 ((snd_pcm_format_t) 46) /* 8 Samples in 5 bytes */ #define SNDRV_PCM_FORMAT_G723_40_1B ((snd_pcm_format_t) 47) /* 1 sample in 1 byte */ #define SNDRV_PCM_FORMAT_DSD_U8 ((snd_pcm_format_t) 48) /* DSD, 1-byte samples DSD (x8) */ #define SNDRV_PCM_FORMAT_DSD_U16_LE ((snd_pcm_format_t) 49) /* DSD, 2-byte samples DSD (x16), little endian */ #define SNDRV_PCM_FORMAT_DSD_U32_LE ((snd_pcm_format_t) 50) /* DSD, 4-byte samples DSD (x32), little endian */ #define SNDRV_PCM_FORMAT_DSD_U16_BE ((snd_pcm_format_t) 51) /* DSD, 2-byte samples DSD (x16), big endian */ #define SNDRV_PCM_FORMAT_DSD_U32_BE ((snd_pcm_format_t) 52) /* DSD, 4-byte samples DSD (x32), big endian */ #define SNDRV_PCM_FORMAT_LAST SNDRV_PCM_FORMAT_DSD_U32_BE #define SNDRV_PCM_FORMAT_FIRST SNDRV_PCM_FORMAT_S8 #ifdef SNDRV_LITTLE_ENDIAN #define SNDRV_PCM_FORMAT_S16 SNDRV_PCM_FORMAT_S16_LE #define SNDRV_PCM_FORMAT_U16 SNDRV_PCM_FORMAT_U16_LE #define SNDRV_PCM_FORMAT_S24 SNDRV_PCM_FORMAT_S24_LE #define SNDRV_PCM_FORMAT_U24 SNDRV_PCM_FORMAT_U24_LE #define SNDRV_PCM_FORMAT_S32 SNDRV_PCM_FORMAT_S32_LE #define SNDRV_PCM_FORMAT_U32 SNDRV_PCM_FORMAT_U32_LE #define SNDRV_PCM_FORMAT_FLOAT SNDRV_PCM_FORMAT_FLOAT_LE #define SNDRV_PCM_FORMAT_FLOAT64 SNDRV_PCM_FORMAT_FLOAT64_LE #define SNDRV_PCM_FORMAT_IEC958_SUBFRAME SNDRV_PCM_FORMAT_IEC958_SUBFRAME_LE #define SNDRV_PCM_FORMAT_S20 SNDRV_PCM_FORMAT_S20_LE #define SNDRV_PCM_FORMAT_U20 SNDRV_PCM_FORMAT_U20_LE #endif #ifdef SNDRV_BIG_ENDIAN #define SNDRV_PCM_FORMAT_S16 SNDRV_PCM_FORMAT_S16_BE #define SNDRV_PCM_FORMAT_U16 SNDRV_PCM_FORMAT_U16_BE #define SNDRV_PCM_FORMAT_S24 SNDRV_PCM_FORMAT_S24_BE #define SNDRV_PCM_FORMAT_U24 SNDRV_PCM_FORMAT_U24_BE #define SNDRV_PCM_FORMAT_S32 SNDRV_PCM_FORMAT_S32_BE #define SNDRV_PCM_FORMAT_U32 SNDRV_PCM_FORMAT_U32_BE #define SNDRV_PCM_FORMAT_FLOAT SNDRV_PCM_FORMAT_FLOAT_BE #define SNDRV_PCM_FORMAT_FLOAT64 SNDRV_PCM_FORMAT_FLOAT64_BE #define SNDRV_PCM_FORMAT_IEC958_SUBFRAME SNDRV_PCM_FORMAT_IEC958_SUBFRAME_BE #define SNDRV_PCM_FORMAT_S20 SNDRV_PCM_FORMAT_S20_BE #define SNDRV_PCM_FORMAT_U20 SNDRV_PCM_FORMAT_U20_BE #endif typedef int __bitwise snd_pcm_subformat_t; #define SNDRV_PCM_SUBFORMAT_STD ((snd_pcm_subformat_t) 0) #define 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_SYNC_APPLPTR 0x00000020 /* need the explicit sync of appl_ptr update */ #define SNDRV_PCM_INFO_PERFECT_DRAIN 0x00000040 /* silencing at the end of stream is not required */ #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 */ #define SNDRV_PCM_INFO_HAS_WALL_CLOCK 0x01000000 /* (Deprecated)has audio wall clock for audio/system time sync */ #define SNDRV_PCM_INFO_HAS_LINK_ATIME 0x01000000 /* report hardware link audio time, reset on startup */ #define SNDRV_PCM_INFO_HAS_LINK_ABSOLUTE_ATIME 0x02000000 /* report absolute hardware link audio time, not reset on startup */ #define SNDRV_PCM_INFO_HAS_LINK_ESTIMATED_ATIME 0x04000000 /* report estimated link audio time */ #define SNDRV_PCM_INFO_HAS_LINK_SYNCHRONIZED_ATIME 0x08000000 /* report synchronized audio/system time */ #define SNDRV_PCM_INFO_EXPLICIT_SYNC 0x10000000 /* needs explicit sync of pointers and data */ #define SNDRV_PCM_INFO_NO_REWINDS 0x20000000 /* hardware can only support monotonic changes of appl_ptr */ #define SNDRV_PCM_INFO_DRAIN_TRIGGER 0x40000000 /* internal kernel flag - trigger in drain */ #define SNDRV_PCM_INFO_FIFO_IN_FRAMES 0x80000000 /* internal kernel flag - FIFO size is in frames */ #if (__BITS_PER_LONG == 32 && defined(__USE_TIME_BITS64)) || defined __KERNEL__ #define __SND_STRUCT_TIME64 #endif typedef int __bitwise snd_pcm_state_t; #define SNDRV_PCM_STATE_OPEN ((snd_pcm_state_t) 0) /* stream is open */ #define SNDRV_PCM_STATE_SETUP ((snd_pcm_state_t) 1) /* stream has a setup */ #define SNDRV_PCM_STATE_PREPARED ((snd_pcm_state_t) 2) /* stream is ready to start */ #define SNDRV_PCM_STATE_RUNNING ((snd_pcm_state_t) 3) /* stream is running */ #define SNDRV_PCM_STATE_XRUN ((snd_pcm_state_t) 4) /* stream reached an xrun */ #define SNDRV_PCM_STATE_DRAINING ((snd_pcm_state_t) 5) /* stream is draining */ #define SNDRV_PCM_STATE_PAUSED ((snd_pcm_state_t) 6) /* stream is paused */ #define SNDRV_PCM_STATE_SUSPENDED ((snd_pcm_state_t) 7) /* hardware is suspended */ #define SNDRV_PCM_STATE_DISCONNECTED ((snd_pcm_state_t) 8) /* hardware is disconnected */ #define SNDRV_PCM_STATE_LAST SNDRV_PCM_STATE_DISCONNECTED enum { SNDRV_PCM_MMAP_OFFSET_DATA = 0x00000000, SNDRV_PCM_MMAP_OFFSET_STATUS_OLD = 0x80000000, SNDRV_PCM_MMAP_OFFSET_CONTROL_OLD = 0x81000000, SNDRV_PCM_MMAP_OFFSET_STATUS_NEW = 0x82000000, SNDRV_PCM_MMAP_OFFSET_CONTROL_NEW = 0x83000000, #ifdef __SND_STRUCT_TIME64 SNDRV_PCM_MMAP_OFFSET_STATUS = SNDRV_PCM_MMAP_OFFSET_STATUS_NEW, SNDRV_PCM_MMAP_OFFSET_CONTROL = SNDRV_PCM_MMAP_OFFSET_CONTROL_NEW, #else SNDRV_PCM_MMAP_OFFSET_STATUS = SNDRV_PCM_MMAP_OFFSET_STATUS_OLD, SNDRV_PCM_MMAP_OFFSET_CONTROL = SNDRV_PCM_MMAP_OFFSET_CONTROL_OLD, #endif }; union snd_pcm_sync_id { unsigned char id[16]; unsigned short id16[8]; unsigned int id32[4]; }; struct snd_pcm_info { unsigned int device; /* RO/WR (control): device number */ unsigned int subdevice; /* RO/WR (control): subdevice number */ int stream; /* RO/WR (control): stream direction */ 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 snd_pcm_sync_id sync; /* hardware synchronization ID */ unsigned char reserved[64]; /* reserved for future... */ }; typedef int snd_pcm_hw_param_t; #define SNDRV_PCM_HW_PARAM_ACCESS 0 /* Access type */ #define SNDRV_PCM_HW_PARAM_FORMAT 1 /* Format */ #define SNDRV_PCM_HW_PARAM_SUBFORMAT 2 /* Subformat */ #define SNDRV_PCM_HW_PARAM_FIRST_MASK SNDRV_PCM_HW_PARAM_ACCESS #define SNDRV_PCM_HW_PARAM_LAST_MASK SNDRV_PCM_HW_PARAM_SUBFORMAT #define SNDRV_PCM_HW_PARAM_SAMPLE_BITS 8 /* Bits per sample */ #define SNDRV_PCM_HW_PARAM_FRAME_BITS 9 /* Bits per frame */ #define SNDRV_PCM_HW_PARAM_CHANNELS 10 /* Channels */ #define SNDRV_PCM_HW_PARAM_RATE 11 /* Approx rate */ #define SNDRV_PCM_HW_PARAM_PERIOD_TIME 12 /* Approx distance between * interrupts in us */ #define SNDRV_PCM_HW_PARAM_PERIOD_SIZE 13 /* Approx frames between * interrupts */ #define SNDRV_PCM_HW_PARAM_PERIOD_BYTES 14 /* Approx bytes between * interrupts */ #define SNDRV_PCM_HW_PARAM_PERIODS 15 /* Approx interrupts per * buffer */ #define SNDRV_PCM_HW_PARAM_BUFFER_TIME 16 /* Approx duration of buffer * in us */ #define SNDRV_PCM_HW_PARAM_BUFFER_SIZE 17 /* Size of buffer in frames */ #define SNDRV_PCM_HW_PARAM_BUFFER_BYTES 18 /* Size of buffer in bytes */ #define SNDRV_PCM_HW_PARAM_TICK_TIME 19 /* Approx tick duration in us */ #define SNDRV_PCM_HW_PARAM_FIRST_INTERVAL SNDRV_PCM_HW_PARAM_SAMPLE_BITS #define 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 */ #define SNDRV_PCM_HW_PARAMS_NO_DRAIN_SILENCE (1<<3) /* suppress drain with the filling * of the silence samples */ struct snd_interval { unsigned int min, max; unsigned int openmin:1, openmax:1, integer:1, empty:1; }; #define SNDRV_MASK_MAX 256 struct snd_mask { __u32 bits[(SNDRV_MASK_MAX+31)/32]; }; struct snd_pcm_hw_params { unsigned int flags; struct snd_mask masks[SNDRV_PCM_HW_PARAM_LAST_MASK - SNDRV_PCM_HW_PARAM_FIRST_MASK + 1]; struct snd_mask mres[5]; /* reserved masks */ struct snd_interval intervals[SNDRV_PCM_HW_PARAM_LAST_INTERVAL - SNDRV_PCM_HW_PARAM_FIRST_INTERVAL + 1]; struct snd_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 */ snd_pcm_uframes_t fifo_size; /* R: chip FIFO size in frames */ unsigned char reserved[64]; /* reserved for future */ }; enum { SNDRV_PCM_TSTAMP_NONE = 0, SNDRV_PCM_TSTAMP_ENABLE, SNDRV_PCM_TSTAMP_LAST = SNDRV_PCM_TSTAMP_ENABLE, }; struct snd_pcm_sw_params { int tstamp_mode; /* timestamp mode */ unsigned int period_step; unsigned int sleep_min; /* min ticks to sleep */ snd_pcm_uframes_t avail_min; /* min avail frames for wakeup */ snd_pcm_uframes_t xfer_align; /* obsolete: xfer size need to be a multiple */ snd_pcm_uframes_t start_threshold; /* min hw_avail frames for automatic start */ /* * The following two thresholds alleviate playback buffer underruns; when * hw_avail drops below the threshold, the respective action is triggered: */ snd_pcm_uframes_t stop_threshold; /* - stop playback */ snd_pcm_uframes_t silence_threshold; /* - pre-fill buffer with silence */ snd_pcm_uframes_t silence_size; /* max size of silence pre-fill; when >= boundary, * fill played area with silence immediately */ snd_pcm_uframes_t boundary; /* pointers wrap point */ unsigned int proto; /* protocol version */ unsigned int tstamp_type; /* timestamp type (req. proto >= 2.0.12) */ unsigned char reserved[56]; /* reserved for future */ }; struct snd_pcm_channel_info { unsigned int channel; __kernel_off_t offset; /* mmap offset */ unsigned int first; /* offset to first sample in bits */ unsigned int step; /* samples distance in bits */ }; enum { /* * first definition for backwards compatibility only, * maps to wallclock/link time for HDAudio playback and DEFAULT/DMA time for everything else */ SNDRV_PCM_AUDIO_TSTAMP_TYPE_COMPAT = 0, /* timestamp definitions */ SNDRV_PCM_AUDIO_TSTAMP_TYPE_DEFAULT = 1, /* DMA time, reported as per hw_ptr */ SNDRV_PCM_AUDIO_TSTAMP_TYPE_LINK = 2, /* link time reported by sample or wallclock counter, reset on startup */ SNDRV_PCM_AUDIO_TSTAMP_TYPE_LINK_ABSOLUTE = 3, /* link time reported by sample or wallclock counter, not reset on startup */ SNDRV_PCM_AUDIO_TSTAMP_TYPE_LINK_ESTIMATED = 4, /* link time estimated indirectly */ SNDRV_PCM_AUDIO_TSTAMP_TYPE_LINK_SYNCHRONIZED = 5, /* link time synchronized with system time */ SNDRV_PCM_AUDIO_TSTAMP_TYPE_LAST = SNDRV_PCM_AUDIO_TSTAMP_TYPE_LINK_SYNCHRONIZED }; /* explicit padding avoids incompatibility between i386 and x86-64 */ typedef struct { unsigned char pad[sizeof(time_t) - sizeof(int)]; } __time_pad; struct snd_pcm_status { snd_pcm_state_t state; /* stream state */ __time_pad pad1; /* align to timespec */ struct timespec trigger_tstamp; /* time when stream was started/stopped/paused */ struct timespec tstamp; /* reference timestamp */ snd_pcm_uframes_t appl_ptr; /* appl ptr */ snd_pcm_uframes_t hw_ptr; /* hw ptr */ snd_pcm_sframes_t delay; /* current delay in frames */ snd_pcm_uframes_t avail; /* number of frames available */ snd_pcm_uframes_t avail_max; /* max frames available on hw since last status */ snd_pcm_uframes_t overrange; /* count of ADC (capture) overrange detections from last status */ snd_pcm_state_t suspended_state; /* suspended stream state */ __u32 audio_tstamp_data; /* needed for 64-bit alignment, used for configs/report to/from userspace */ struct timespec audio_tstamp; /* sample counter, wall clock, PHC or on-demand sync'ed */ struct timespec driver_tstamp; /* useful in case reference system tstamp is reported with delay */ __u32 audio_tstamp_accuracy; /* in ns units, only valid if indicated in audio_tstamp_data */ unsigned char reserved[52-2*sizeof(struct timespec)]; /* must be filled with zero */ }; /* * For mmap operations, we need the 64-bit layout, both for compat mode, * and for y2038 compatibility. For 64-bit applications, the two definitions * are identical, so we keep the traditional version. */ #ifdef __SND_STRUCT_TIME64 #define __snd_pcm_mmap_status64 snd_pcm_mmap_status #define __snd_pcm_mmap_control64 snd_pcm_mmap_control #define __snd_pcm_sync_ptr64 snd_pcm_sync_ptr #define __snd_timespec64 timespec struct __snd_timespec { __s32 tv_sec; __s32 tv_nsec; }; #else #define __snd_pcm_mmap_status snd_pcm_mmap_status #define __snd_pcm_mmap_control snd_pcm_mmap_control #define __snd_pcm_sync_ptr snd_pcm_sync_ptr #define __snd_timespec timespec struct __snd_timespec64 { __s64 tv_sec; __s64 tv_nsec; }; #endif struct __snd_pcm_mmap_status { snd_pcm_state_t state; /* RO: state - SNDRV_PCM_STATE_XXXX */ int pad1; /* Needed for 64 bit alignment */ snd_pcm_uframes_t hw_ptr; /* RO: hw ptr (0...boundary-1) */ struct __snd_timespec tstamp; /* Timestamp */ snd_pcm_state_t suspended_state; /* RO: suspended stream state */ struct __snd_timespec audio_tstamp; /* from sample counter or wall clock */ }; struct __snd_pcm_mmap_control { snd_pcm_uframes_t appl_ptr; /* RW: appl ptr (0...boundary-1) */ snd_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 __snd_pcm_sync_ptr { unsigned int flags; union { struct __snd_pcm_mmap_status status; unsigned char reserved[64]; } s; union { struct __snd_pcm_mmap_control control; unsigned char reserved[64]; } c; }; #if defined(__BYTE_ORDER) ? __BYTE_ORDER == __BIG_ENDIAN : defined(__BIG_ENDIAN) typedef char __pad_before_uframe[sizeof(__u64) - sizeof(snd_pcm_uframes_t)]; typedef char __pad_after_uframe[0]; #endif #if defined(__BYTE_ORDER) ? __BYTE_ORDER == __LITTLE_ENDIAN : defined(__LITTLE_ENDIAN) typedef char __pad_before_uframe[0]; typedef char __pad_after_uframe[sizeof(__u64) - sizeof(snd_pcm_uframes_t)]; #endif struct __snd_pcm_mmap_status64 { snd_pcm_state_t state; /* RO: state - SNDRV_PCM_STATE_XXXX */ __u32 pad1; /* Needed for 64 bit alignment */ __pad_before_uframe __pad1; snd_pcm_uframes_t hw_ptr; /* RO: hw ptr (0...boundary-1) */ __pad_after_uframe __pad2; struct __snd_timespec64 tstamp; /* Timestamp */ snd_pcm_state_t suspended_state;/* RO: suspended stream state */ __u32 pad3; /* Needed for 64 bit alignment */ struct __snd_timespec64 audio_tstamp; /* sample counter or wall clock */ }; struct __snd_pcm_mmap_control64 { __pad_before_uframe __pad1; snd_pcm_uframes_t appl_ptr; /* RW: appl ptr (0...boundary-1) */ __pad_before_uframe __pad2; // This should be __pad_after_uframe, but binary // backwards compatibility constraints prevent a fix. __pad_before_uframe __pad3; snd_pcm_uframes_t avail_min; /* RW: min available frames for wakeup */ __pad_after_uframe __pad4; }; struct __snd_pcm_sync_ptr64 { __u32 flags; __u32 pad1; union { struct __snd_pcm_mmap_status64 status; unsigned char reserved[64]; } s; union { struct __snd_pcm_mmap_control64 control; unsigned char reserved[64]; } c; }; struct snd_xferi { snd_pcm_sframes_t result; void *buf; snd_pcm_uframes_t frames; }; struct snd_xfern { snd_pcm_sframes_t result; void * *bufs; snd_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_MONOTONIC_RAW, /* monotonic_raw (no NTP) */ SNDRV_PCM_TSTAMP_TYPE_LAST = SNDRV_PCM_TSTAMP_TYPE_MONOTONIC_RAW, }; /* channel positions */ enum { SNDRV_CHMAP_UNKNOWN = 0, SNDRV_CHMAP_NA, /* N/A, silent */ SNDRV_CHMAP_MONO, /* mono stream */ /* this follows the alsa-lib mixer channel value + 3 */ SNDRV_CHMAP_FL, /* front left */ SNDRV_CHMAP_FR, /* front right */ SNDRV_CHMAP_RL, /* rear left */ SNDRV_CHMAP_RR, /* rear right */ SNDRV_CHMAP_FC, /* front center */ SNDRV_CHMAP_LFE, /* LFE */ SNDRV_CHMAP_SL, /* side left */ SNDRV_CHMAP_SR, /* side right */ SNDRV_CHMAP_RC, /* rear center */ /* new definitions */ SNDRV_CHMAP_FLC, /* front left center */ SNDRV_CHMAP_FRC, /* front right center */ SNDRV_CHMAP_RLC, /* rear left center */ SNDRV_CHMAP_RRC, /* rear right center */ SNDRV_CHMAP_FLW, /* front left wide */ SNDRV_CHMAP_FRW, /* front right wide */ SNDRV_CHMAP_FLH, /* front left high */ SNDRV_CHMAP_FCH, /* front center high */ SNDRV_CHMAP_FRH, /* front right high */ SNDRV_CHMAP_TC, /* top center */ SNDRV_CHMAP_TFL, /* top front left */ SNDRV_CHMAP_TFR, /* top front right */ SNDRV_CHMAP_TFC, /* top front center */ SNDRV_CHMAP_TRL, /* top rear left */ SNDRV_CHMAP_TRR, /* top rear right */ SNDRV_CHMAP_TRC, /* top rear center */ /* new definitions for UAC2 */ SNDRV_CHMAP_TFLC, /* top front left center */ SNDRV_CHMAP_TFRC, /* top front right center */ SNDRV_CHMAP_TSL, /* top side left */ SNDRV_CHMAP_TSR, /* top side right */ SNDRV_CHMAP_LLFE, /* left LFE */ SNDRV_CHMAP_RLFE, /* right LFE */ SNDRV_CHMAP_BC, /* bottom center */ SNDRV_CHMAP_BLC, /* bottom left center */ SNDRV_CHMAP_BRC, /* bottom right center */ SNDRV_CHMAP_LAST = SNDRV_CHMAP_BRC, }; #define SNDRV_CHMAP_POSITION_MASK 0xffff #define SNDRV_CHMAP_PHASE_INVERSE (0x01 << 16) #define SNDRV_CHMAP_DRIVER_SPEC (0x02 << 16) #define SNDRV_PCM_IOCTL_PVERSION _IOR('A', 0x00, int) #define SNDRV_PCM_IOCTL_INFO _IOR('A', 0x01, struct snd_pcm_info) #define SNDRV_PCM_IOCTL_TSTAMP _IOW('A', 0x02, int) #define SNDRV_PCM_IOCTL_TTSTAMP _IOW('A', 0x03, int) #define SNDRV_PCM_IOCTL_USER_PVERSION _IOW('A', 0x04, int) #define SNDRV_PCM_IOCTL_HW_REFINE _IOWR('A', 0x10, struct snd_pcm_hw_params) #define SNDRV_PCM_IOCTL_HW_PARAMS _IOWR('A', 0x11, struct snd_pcm_hw_params) #define SNDRV_PCM_IOCTL_HW_FREE _IO('A', 0x12) #define SNDRV_PCM_IOCTL_SW_PARAMS _IOWR('A', 0x13, struct snd_pcm_sw_params) #define SNDRV_PCM_IOCTL_STATUS _IOR('A', 0x20, struct snd_pcm_status) #define SNDRV_PCM_IOCTL_DELAY _IOR('A', 0x21, snd_pcm_sframes_t) #define SNDRV_PCM_IOCTL_HWSYNC _IO('A', 0x22) #define __SNDRV_PCM_IOCTL_SYNC_PTR _IOWR('A', 0x23, struct __snd_pcm_sync_ptr) #define __SNDRV_PCM_IOCTL_SYNC_PTR64 _IOWR('A', 0x23, struct __snd_pcm_sync_ptr64) #define SNDRV_PCM_IOCTL_SYNC_PTR _IOWR('A', 0x23, struct snd_pcm_sync_ptr) #define SNDRV_PCM_IOCTL_STATUS_EXT _IOWR('A', 0x24, struct snd_pcm_status) #define SNDRV_PCM_IOCTL_CHANNEL_INFO _IOR('A', 0x32, struct snd_pcm_channel_info) #define SNDRV_PCM_IOCTL_PREPARE _IO('A', 0x40) #define SNDRV_PCM_IOCTL_RESET _IO('A', 0x41) #define SNDRV_PCM_IOCTL_START _IO('A', 0x42) #define SNDRV_PCM_IOCTL_DROP _IO('A', 0x43) #define SNDRV_PCM_IOCTL_DRAIN _IO('A', 0x44) #define SNDRV_PCM_IOCTL_PAUSE _IOW('A', 0x45, int) #define SNDRV_PCM_IOCTL_REWIND _IOW('A', 0x46, snd_pcm_uframes_t) #define SNDRV_PCM_IOCTL_RESUME _IO('A', 0x47) #define SNDRV_PCM_IOCTL_XRUN _IO('A', 0x48) #define SNDRV_PCM_IOCTL_FORWARD _IOW('A', 0x49, snd_pcm_uframes_t) #define SNDRV_PCM_IOCTL_WRITEI_FRAMES _IOW('A', 0x50, struct snd_xferi) #define SNDRV_PCM_IOCTL_READI_FRAMES _IOR('A', 0x51, struct snd_xferi) #define SNDRV_PCM_IOCTL_WRITEN_FRAMES _IOW('A', 0x52, struct snd_xfern) #define SNDRV_PCM_IOCTL_READN_FRAMES _IOR('A', 0x53, struct snd_xfern) #define SNDRV_PCM_IOCTL_LINK _IOW('A', 0x60, int) #define SNDRV_PCM_IOCTL_UNLINK _IO('A', 0x61) /***************************************************************************** * * * MIDI v1.0 interface * * * *****************************************************************************/ /* * Raw MIDI section - /dev/snd/midi?? */ #define SNDRV_RAWMIDI_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 2) enum { 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 snd_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 */ }; #define SNDRV_RAWMIDI_MODE_FRAMING_MASK (7<<0) #define SNDRV_RAWMIDI_MODE_FRAMING_SHIFT 0 #define SNDRV_RAWMIDI_MODE_FRAMING_NONE (0<<0) #define SNDRV_RAWMIDI_MODE_FRAMING_TSTAMP (1<<0) #define SNDRV_RAWMIDI_MODE_CLOCK_MASK (7<<3) #define SNDRV_RAWMIDI_MODE_CLOCK_SHIFT 3 #define SNDRV_RAWMIDI_MODE_CLOCK_NONE (0<<3) #define SNDRV_RAWMIDI_MODE_CLOCK_REALTIME (1<<3) #define SNDRV_RAWMIDI_MODE_CLOCK_MONOTONIC (2<<3) #define SNDRV_RAWMIDI_MODE_CLOCK_MONOTONIC_RAW (3<<3) #define SNDRV_RAWMIDI_FRAMING_DATA_LENGTH 16 struct snd_rawmidi_framing_tstamp { /* For now, frame_type is always 0. Midi 2.0 is expected to add new * types here. Applications are expected to skip unknown frame types. */ __u8 frame_type; __u8 length; /* number of valid bytes in data field */ __u8 reserved[2]; __u32 tv_nsec; /* nanoseconds */ __u64 tv_sec; /* seconds */ __u8 data[SNDRV_RAWMIDI_FRAMING_DATA_LENGTH]; } __attribute__((packed)); struct snd_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 int mode; /* For input data only, frame incoming data */ unsigned char reserved[12]; /* reserved for future use */ }; struct snd_rawmidi_status { int stream; __time_pad pad1; 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 */ }; #define SNDRV_RAWMIDI_IOCTL_PVERSION _IOR('W', 0x00, int) #define SNDRV_RAWMIDI_IOCTL_INFO _IOR('W', 0x01, struct snd_rawmidi_info) #define SNDRV_RAWMIDI_IOCTL_USER_PVERSION _IOW('W', 0x02, int) #define SNDRV_RAWMIDI_IOCTL_PARAMS _IOWR('W', 0x10, struct snd_rawmidi_params) #define SNDRV_RAWMIDI_IOCTL_STATUS _IOWR('W', 0x20, struct snd_rawmidi_status) #define SNDRV_RAWMIDI_IOCTL_DROP _IOW('W', 0x30, int) #define SNDRV_RAWMIDI_IOCTL_DRAIN _IOW('W', 0x31, int) /* * Timer section - /dev/snd/timer */ #define SNDRV_TIMER_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 7) enum { 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_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 /* unused */ #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 snd_timer_id { int dev_class; int dev_sclass; int card; int device; int subdevice; }; struct snd_timer_ginfo { struct snd_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 snd_timer_gparams { struct snd_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 snd_timer_gstatus { struct snd_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 snd_timer_select { struct snd_timer_id id; /* bind to timer ID */ unsigned char reserved[32]; /* reserved */ }; struct snd_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 snd_timer_params { unsigned int flags; /* flags - SNDRV_TIMER_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 snd_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 */ }; #define SNDRV_TIMER_IOCTL_PVERSION _IOR('T', 0x00, int) #define SNDRV_TIMER_IOCTL_NEXT_DEVICE _IOWR('T', 0x01, struct snd_timer_id) #define SNDRV_TIMER_IOCTL_TREAD_OLD _IOW('T', 0x02, int) #define SNDRV_TIMER_IOCTL_GINFO _IOWR('T', 0x03, struct snd_timer_ginfo) #define SNDRV_TIMER_IOCTL_GPARAMS _IOW('T', 0x04, struct snd_timer_gparams) #define SNDRV_TIMER_IOCTL_GSTATUS _IOWR('T', 0x05, struct snd_timer_gstatus) #define SNDRV_TIMER_IOCTL_SELECT _IOW('T', 0x10, struct snd_timer_select) #define SNDRV_TIMER_IOCTL_INFO _IOR('T', 0x11, struct snd_timer_info) #define SNDRV_TIMER_IOCTL_PARAMS _IOW('T', 0x12, struct snd_timer_params) #define SNDRV_TIMER_IOCTL_STATUS _IOR('T', 0x14, struct snd_timer_status) /* The following four ioctls are changed since 1.0.9 due to confliction */ #define SNDRV_TIMER_IOCTL_START _IO('T', 0xa0) #define SNDRV_TIMER_IOCTL_STOP _IO('T', 0xa1) #define SNDRV_TIMER_IOCTL_CONTINUE _IO('T', 0xa2) #define SNDRV_TIMER_IOCTL_PAUSE _IO('T', 0xa3) #define SNDRV_TIMER_IOCTL_TREAD64 _IOW('T', 0xa4, int) #if __BITS_PER_LONG == 64 #define SNDRV_TIMER_IOCTL_TREAD SNDRV_TIMER_IOCTL_TREAD_OLD #else #define SNDRV_TIMER_IOCTL_TREAD ((sizeof(__kernel_long_t) >= sizeof(time_t)) ? \ SNDRV_TIMER_IOCTL_TREAD_OLD : \ SNDRV_TIMER_IOCTL_TREAD64) #endif struct snd_timer_read { unsigned int resolution; unsigned int ticks; }; enum { 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 snd_timer_tread { int event; __time_pad pad1; struct timespec tstamp; unsigned int val; __time_pad pad2; }; /**************************************************************************** * * * Section for driver control interface - /dev/snd/control? * * * ****************************************************************************/ #define SNDRV_CTL_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 8) struct snd_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..) */ }; typedef int __bitwise snd_ctl_elem_type_t; #define SNDRV_CTL_ELEM_TYPE_NONE ((snd_ctl_elem_type_t) 0) /* invalid */ #define SNDRV_CTL_ELEM_TYPE_BOOLEAN ((snd_ctl_elem_type_t) 1) /* boolean type */ #define SNDRV_CTL_ELEM_TYPE_INTEGER ((snd_ctl_elem_type_t) 2) /* integer type */ #define SNDRV_CTL_ELEM_TYPE_ENUMERATED ((snd_ctl_elem_type_t) 3) /* enumerated type */ #define SNDRV_CTL_ELEM_TYPE_BYTES ((snd_ctl_elem_type_t) 4) /* byte array */ #define SNDRV_CTL_ELEM_TYPE_IEC958 ((snd_ctl_elem_type_t) 5) /* IEC958 (S/PDIF) setup */ #define SNDRV_CTL_ELEM_TYPE_INTEGER64 ((snd_ctl_elem_type_t) 6) /* 64-bit integer type */ #define SNDRV_CTL_ELEM_TYPE_LAST SNDRV_CTL_ELEM_TYPE_INTEGER64 typedef int __bitwise snd_ctl_elem_iface_t; #define SNDRV_CTL_ELEM_IFACE_CARD ((snd_ctl_elem_iface_t) 0) /* global control */ #define SNDRV_CTL_ELEM_IFACE_HWDEP ((snd_ctl_elem_iface_t) 1) /* hardware dependent device */ #define SNDRV_CTL_ELEM_IFACE_MIXER ((snd_ctl_elem_iface_t) 2) /* virtual mixer device */ #define SNDRV_CTL_ELEM_IFACE_PCM ((snd_ctl_elem_iface_t) 3) /* PCM device */ #define SNDRV_CTL_ELEM_IFACE_RAWMIDI ((snd_ctl_elem_iface_t) 4) /* RawMidi device */ #define SNDRV_CTL_ELEM_IFACE_TIMER ((snd_ctl_elem_iface_t) 5) /* timer device */ #define SNDRV_CTL_ELEM_IFACE_SEQUENCER ((snd_ctl_elem_iface_t) 6) /* sequencer client */ #define 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 */ /* (1 << 3) is unused. */ #define SNDRV_CTL_ELEM_ACCESS_TLV_READ (1<<4) /* TLV read is possible */ #define SNDRV_CTL_ELEM_ACCESS_TLV_WRITE (1<<5) /* TLV write is possible */ #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) /* kernel use a TLV callback */ #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 */ #define SNDRV_CTL_ELEM_ID_NAME_MAXLEN 44 struct snd_ctl_elem_id { unsigned int numid; /* numeric identifier, zero = invalid */ snd_ctl_elem_iface_t iface; /* interface identifier */ unsigned int device; /* device/client number */ unsigned int subdevice; /* subdevice (substream) number */ unsigned char name[SNDRV_CTL_ELEM_ID_NAME_MAXLEN]; /* ASCII name of item */ unsigned int index; /* index of item */ }; struct snd_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 snd_ctl_elem_id *pids; /* R: IDs */ unsigned char reserved[50]; }; struct snd_ctl_elem_info { struct snd_ctl_elem_id id; /* W: element ID */ snd_ctl_elem_type_t 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 */ __kernel_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 */ __u64 names_ptr; /* W: names list (ELEM_ADD only) */ unsigned int names_length; } enumerated; unsigned char reserved[128]; } value; unsigned char reserved[64]; }; struct snd_ctl_elem_value { struct snd_ctl_elem_id id; /* W: element ID */ unsigned int indirect: 1; /* W: indirect access - obsoleted */ union { union { long value[128]; long *value_ptr; /* obsoleted */ } integer; union { long long value[64]; long long *value_ptr; /* obsoleted */ } integer64; union { unsigned int item[128]; unsigned int *item_ptr; /* obsoleted */ } enumerated; union { unsigned char data[512]; unsigned char *data_ptr; /* obsoleted */ } bytes; struct snd_aes_iec958 iec958; } value; /* RO */ unsigned char reserved[128]; }; struct snd_ctl_tlv { unsigned int numid; /* control element numeric identification */ unsigned int length; /* in bytes aligned to 4 */ unsigned int tlv[0]; /* first TLV */ }; #define SNDRV_CTL_IOCTL_PVERSION _IOR('U', 0x00, int) #define SNDRV_CTL_IOCTL_CARD_INFO _IOR('U', 0x01, struct snd_ctl_card_info) #define SNDRV_CTL_IOCTL_ELEM_LIST _IOWR('U', 0x10, struct snd_ctl_elem_list) #define SNDRV_CTL_IOCTL_ELEM_INFO _IOWR('U', 0x11, struct snd_ctl_elem_info) #define SNDRV_CTL_IOCTL_ELEM_READ _IOWR('U', 0x12, struct snd_ctl_elem_value) #define SNDRV_CTL_IOCTL_ELEM_WRITE _IOWR('U', 0x13, struct snd_ctl_elem_value) #define SNDRV_CTL_IOCTL_ELEM_LOCK _IOW('U', 0x14, struct snd_ctl_elem_id) #define SNDRV_CTL_IOCTL_ELEM_UNLOCK _IOW('U', 0x15, struct snd_ctl_elem_id) #define SNDRV_CTL_IOCTL_SUBSCRIBE_EVENTS _IOWR('U', 0x16, int) #define SNDRV_CTL_IOCTL_ELEM_ADD _IOWR('U', 0x17, struct snd_ctl_elem_info) #define SNDRV_CTL_IOCTL_ELEM_REPLACE _IOWR('U', 0x18, struct snd_ctl_elem_info) #define SNDRV_CTL_IOCTL_ELEM_REMOVE _IOWR('U', 0x19, struct snd_ctl_elem_id) #define SNDRV_CTL_IOCTL_TLV_READ _IOWR('U', 0x1a, struct snd_ctl_tlv) #define SNDRV_CTL_IOCTL_TLV_WRITE _IOWR('U', 0x1b, struct snd_ctl_tlv) #define SNDRV_CTL_IOCTL_TLV_COMMAND _IOWR('U', 0x1c, struct snd_ctl_tlv) #define SNDRV_CTL_IOCTL_HWDEP_NEXT_DEVICE _IOWR('U', 0x20, int) #define SNDRV_CTL_IOCTL_HWDEP_INFO _IOR('U', 0x21, struct snd_hwdep_info) #define SNDRV_CTL_IOCTL_PCM_NEXT_DEVICE _IOR('U', 0x30, int) #define SNDRV_CTL_IOCTL_PCM_INFO _IOWR('U', 0x31, struct snd_pcm_info) #define SNDRV_CTL_IOCTL_PCM_PREFER_SUBDEVICE _IOW('U', 0x32, int) #define SNDRV_CTL_IOCTL_RAWMIDI_NEXT_DEVICE _IOWR('U', 0x40, int) #define SNDRV_CTL_IOCTL_RAWMIDI_INFO _IOWR('U', 0x41, struct snd_rawmidi_info) #define SNDRV_CTL_IOCTL_RAWMIDI_PREFER_SUBDEVICE _IOW('U', 0x42, int) #define SNDRV_CTL_IOCTL_POWER _IOWR('U', 0xd0, int) #define 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_TLV (1<<3) /* element TLV tree was changed */ #define SNDRV_CTL_EVENT_MASK_REMOVE (~0U) /* element was removed */ struct snd_ctl_event { int type; /* event type - SNDRV_CTL_EVENT_* */ union { struct { unsigned int mask; struct snd_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 #endif /* __SOUND_ASOUND_H */
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