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Edit File : asound.h \| Size : 50.02 KB
/* 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[52-2sizeof(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 */ Back

Edit File : asound.h | Size : 50.02 KB

/* 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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