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alsa-lib/include/sound/asound.h
Takashi Iwai 0f36270dd3 Follow channel position definitions to mixer channel in mixer.h 
mixer.h already contains some channel position definitions.
To be more consistent over all systems, better to follow the same
order for the new channel map, too.  But since UNKNOWN channel must be
zero but the definition in mixer.h contains -1 as UNKNOWN, simply
shift the value with 1.

If the conversion is required between SND_CHMAP and SND_MIXER_SCHN,
just increment/decrement 1.  Eventually I'll provide helper functions
for that...

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2012-09-13 08:24:47 +02:00

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/*
* Advanced Linux Sound Architecture - ALSA - Driver
* Copyright (c) 1994-2003 by Jaroslav Kysela <perex@perex.cz>,
* Abramo Bagnara <abramo@alsa-project.org>
*
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#ifndef __SOUND_ASOUND_H
#define __SOUND_ASOUND_H
#if defined(LINUX) || defined(__LINUX__) || defined(__linux__)
#include <linux/ioctl.h>
#include <linux/types.h>
#ifdef __KERNEL__
#include <linux/time.h>
#include <asm/byteorder.h>
#if __LITTLE_ENDIAN == 1234
#define SNDRV_LITTLE_ENDIAN
#elif __BIG_ENDIAN == 4321
#define SNDRV_BIG_ENDIAN
#else
#error "Unsupported endian..."
#endif
#else /* !__KERNEL__ */
#include <endian.h>
#if __BYTE_ORDER == __LITTLE_ENDIAN
#define SNDRV_LITTLE_ENDIAN
#elif __BYTE_ORDER == __BIG_ENDIAN
#define SNDRV_BIG_ENDIAN
#else
#error "Unsupported endian..."
#endif
#endif /* __KERNEL **/
#endif /* LINUX */
#ifndef __KERNEL__
#include <sys/time.h>
#include <sys/types.h>
#include <sys/ioctl.h>
#endif
/*
* protocol version
*/
#define SNDRV_PROTOCOL_VERSION(major, minor, subminor) (((major)<<16)|((minor)<<8)|(subminor))
#define SNDRV_PROTOCOL_MAJOR(version) (((version)>>16)&0xffff)
#define SNDRV_PROTOCOL_MINOR(version) (((version)>>8)&0xff)
#define SNDRV_PROTOCOL_MICRO(version) ((version)&0xff)
#define SNDRV_PROTOCOL_INCOMPATIBLE(kversion, uversion) \
(SNDRV_PROTOCOL_MAJOR(kversion) != SNDRV_PROTOCOL_MAJOR(uversion) || \
(SNDRV_PROTOCOL_MAJOR(kversion) == SNDRV_PROTOCOL_MAJOR(uversion) && \
SNDRV_PROTOCOL_MINOR(kversion) != SNDRV_PROTOCOL_MINOR(uversion)))
/****************************************************************************
* *
* Digital audio interface *
* *
****************************************************************************/
struct sndrv_aes_iec958 {
unsigned char status[24]; /* AES/IEC958 channel status bits */
unsigned char subcode[147]; /* AES/IEC958 subcode bits */
unsigned char pad; /* nothing */
unsigned char dig_subframe[4]; /* AES/IEC958 subframe bits */
};
/****************************************************************************
* *
* Section for driver hardware dependent interface - /dev/snd/hw? *
* *
****************************************************************************/
#define SNDRV_HWDEP_VERSION SNDRV_PROTOCOL_VERSION(1, 0, 1)
enum sndrv_hwdep_iface {
SNDRV_HWDEP_IFACE_OPL2 = 0,
SNDRV_HWDEP_IFACE_OPL3,
SNDRV_HWDEP_IFACE_OPL4,
SNDRV_HWDEP_IFACE_SB16CSP, /* Creative Signal Processor */
SNDRV_HWDEP_IFACE_EMU10K1, /* FX8010 processor in EMU10K1 chip */
SNDRV_HWDEP_IFACE_YSS225, /* Yamaha FX processor */
SNDRV_HWDEP_IFACE_ICS2115, /* Wavetable synth */
SNDRV_HWDEP_IFACE_SSCAPE, /* Ensoniq SoundScape ISA card (MC68EC000) */
SNDRV_HWDEP_IFACE_VX, /* Digigram VX cards */
SNDRV_HWDEP_IFACE_MIXART, /* Digigram miXart cards */
SNDRV_HWDEP_IFACE_USX2Y, /* Tascam US122, US224 & US428 usb */
SNDRV_HWDEP_IFACE_EMUX_WAVETABLE, /* EmuX wavetable */
SNDRV_HWDEP_IFACE_BLUETOOTH, /* Bluetooth audio */
SNDRV_HWDEP_IFACE_USX2Y_PCM, /* Tascam US122, US224 & US428 rawusb pcm */
SNDRV_HWDEP_IFACE_PCXHR, /* Digigram PCXHR */
SNDRV_HWDEP_IFACE_SB_RC, /* SB Extigy/Audigy2NX remote control */
SNDRV_HWDEP_IFACE_HDA, /* HD-audio */
SNDRV_HWDEP_IFACE_USB_STREAM, /* direct access to usb stream */
/* Don't forget to change the following: */
SNDRV_HWDEP_IFACE_LAST = SNDRV_HWDEP_IFACE_USB_STREAM
};
struct sndrv_hwdep_info {
unsigned int device; /* WR: device number */
int card; /* R: card number */
unsigned char id[64]; /* ID (user selectable) */
unsigned char name[80]; /* hwdep name */
int iface; /* hwdep interface */
unsigned char reserved[64]; /* reserved for future */
};
/* generic DSP loader */
struct sndrv_hwdep_dsp_status {
unsigned int version; /* R: driver-specific version */
unsigned char id[32]; /* R: driver-specific ID string */
unsigned int num_dsps; /* R: number of DSP images to transfer */
unsigned int dsp_loaded; /* R: bit flags indicating the loaded DSPs */
unsigned int chip_ready; /* R: 1 = initialization finished */
unsigned char reserved[16]; /* reserved for future use */
};
struct sndrv_hwdep_dsp_image {
unsigned int index; /* W: DSP index */
unsigned char name[64]; /* W: ID (e.g. file name) */
unsigned char *image; /* W: binary image */
size_t length; /* W: size of image in bytes */
unsigned long driver_data; /* W: driver-specific data */
};
enum {
SNDRV_HWDEP_IOCTL_PVERSION = _IOR ('H', 0x00, int),
SNDRV_HWDEP_IOCTL_INFO = _IOR ('H', 0x01, struct sndrv_hwdep_info),
SNDRV_HWDEP_IOCTL_DSP_STATUS = _IOR('H', 0x02, struct sndrv_hwdep_dsp_status),
SNDRV_HWDEP_IOCTL_DSP_LOAD = _IOW('H', 0x03, struct sndrv_hwdep_dsp_image)
};
/*****************************************************************************
* *
* Digital Audio (PCM) interface - /dev/snd/pcm?? *
* *
*****************************************************************************/
#define SNDRV_PCM_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 10)
typedef unsigned long sndrv_pcm_uframes_t;
typedef long sndrv_pcm_sframes_t;
enum sndrv_pcm_class {
SNDRV_PCM_CLASS_GENERIC = 0, /* standard mono or stereo device */
SNDRV_PCM_CLASS_MULTI, /* multichannel device */
SNDRV_PCM_CLASS_MODEM, /* software modem class */
SNDRV_PCM_CLASS_DIGITIZER, /* digitizer class */
/* Don't forget to change the following: */
SNDRV_PCM_CLASS_LAST = SNDRV_PCM_CLASS_DIGITIZER,
};
enum sndrv_pcm_subclass {
SNDRV_PCM_SUBCLASS_GENERIC_MIX = 0, /* mono or stereo subdevices are mixed together */
SNDRV_PCM_SUBCLASS_MULTI_MIX, /* multichannel subdevices are mixed together */
/* Don't forget to change the following: */
SNDRV_PCM_SUBCLASS_LAST = SNDRV_PCM_SUBCLASS_MULTI_MIX,
};
enum sndrv_pcm_stream {
SNDRV_PCM_STREAM_PLAYBACK = 0,
SNDRV_PCM_STREAM_CAPTURE,
SNDRV_PCM_STREAM_LAST = SNDRV_PCM_STREAM_CAPTURE,
};
enum sndrv_pcm_access {
SNDRV_PCM_ACCESS_MMAP_INTERLEAVED = 0, /* interleaved mmap */
SNDRV_PCM_ACCESS_MMAP_NONINTERLEAVED, /* noninterleaved mmap */
SNDRV_PCM_ACCESS_MMAP_COMPLEX, /* complex mmap */
SNDRV_PCM_ACCESS_RW_INTERLEAVED, /* readi/writei */
SNDRV_PCM_ACCESS_RW_NONINTERLEAVED, /* readn/writen */
SNDRV_PCM_ACCESS_LAST = SNDRV_PCM_ACCESS_RW_NONINTERLEAVED,
};
enum sndrv_pcm_format {
SNDRV_PCM_FORMAT_S8 = 0,
SNDRV_PCM_FORMAT_U8,
SNDRV_PCM_FORMAT_S16_LE,
SNDRV_PCM_FORMAT_S16_BE,
SNDRV_PCM_FORMAT_U16_LE,
SNDRV_PCM_FORMAT_U16_BE,
SNDRV_PCM_FORMAT_S24_LE, /* low three bytes */
SNDRV_PCM_FORMAT_S24_BE, /* low three bytes */
SNDRV_PCM_FORMAT_U24_LE, /* low three bytes */
SNDRV_PCM_FORMAT_U24_BE, /* low three bytes */
SNDRV_PCM_FORMAT_S32_LE,
SNDRV_PCM_FORMAT_S32_BE,
SNDRV_PCM_FORMAT_U32_LE,
SNDRV_PCM_FORMAT_U32_BE,
SNDRV_PCM_FORMAT_FLOAT_LE, /* 4-byte float, IEEE-754 32-bit, range -1.0 to 1.0 */
SNDRV_PCM_FORMAT_FLOAT_BE, /* 4-byte float, IEEE-754 32-bit, range -1.0 to 1.0 */
SNDRV_PCM_FORMAT_FLOAT64_LE, /* 8-byte float, IEEE-754 64-bit, range -1.0 to 1.0 */
SNDRV_PCM_FORMAT_FLOAT64_BE, /* 8-byte float, IEEE-754 64-bit, range -1.0 to 1.0 */
SNDRV_PCM_FORMAT_IEC958_SUBFRAME_LE, /* IEC-958 subframe, Little Endian */
SNDRV_PCM_FORMAT_IEC958_SUBFRAME_BE, /* IEC-958 subframe, Big Endian */
SNDRV_PCM_FORMAT_MU_LAW,
SNDRV_PCM_FORMAT_A_LAW,
SNDRV_PCM_FORMAT_IMA_ADPCM,
SNDRV_PCM_FORMAT_MPEG,
SNDRV_PCM_FORMAT_GSM,
SNDRV_PCM_FORMAT_SPECIAL = 31,
SNDRV_PCM_FORMAT_S24_3LE = 32, /* in three bytes */
SNDRV_PCM_FORMAT_S24_3BE, /* in three bytes */
SNDRV_PCM_FORMAT_U24_3LE, /* in three bytes */
SNDRV_PCM_FORMAT_U24_3BE, /* in three bytes */
SNDRV_PCM_FORMAT_S20_3LE, /* in three bytes */
SNDRV_PCM_FORMAT_S20_3BE, /* in three bytes */
SNDRV_PCM_FORMAT_U20_3LE, /* in three bytes */
SNDRV_PCM_FORMAT_U20_3BE, /* in three bytes */
SNDRV_PCM_FORMAT_S18_3LE, /* in three bytes */
SNDRV_PCM_FORMAT_S18_3BE, /* in three bytes */
SNDRV_PCM_FORMAT_U18_3LE, /* in three bytes */
SNDRV_PCM_FORMAT_U18_3BE, /* in three bytes */
SNDRV_PCM_FORMAT_G723_24, /* 8 samples in 3 bytes */
SNDRV_PCM_FORMAT_G723_24_1B, /* 1 sample in 1 byte */
SNDRV_PCM_FORMAT_G723_40, /* 8 Samples in 5 bytes */
SNDRV_PCM_FORMAT_G723_40_1B, /* 1 sample in 1 byte */
SNDRV_PCM_FORMAT_LAST = SNDRV_PCM_FORMAT_G723_40_1B,
#ifdef SNDRV_LITTLE_ENDIAN
SNDRV_PCM_FORMAT_S16 = SNDRV_PCM_FORMAT_S16_LE,
SNDRV_PCM_FORMAT_U16 = SNDRV_PCM_FORMAT_U16_LE,
SNDRV_PCM_FORMAT_S24 = SNDRV_PCM_FORMAT_S24_LE,
SNDRV_PCM_FORMAT_U24 = SNDRV_PCM_FORMAT_U24_LE,
SNDRV_PCM_FORMAT_S32 = SNDRV_PCM_FORMAT_S32_LE,
SNDRV_PCM_FORMAT_U32 = SNDRV_PCM_FORMAT_U32_LE,
SNDRV_PCM_FORMAT_FLOAT = SNDRV_PCM_FORMAT_FLOAT_LE,
SNDRV_PCM_FORMAT_FLOAT64 = SNDRV_PCM_FORMAT_FLOAT64_LE,
SNDRV_PCM_FORMAT_IEC958_SUBFRAME = SNDRV_PCM_FORMAT_IEC958_SUBFRAME_LE,
#endif
#ifdef SNDRV_BIG_ENDIAN
SNDRV_PCM_FORMAT_S16 = SNDRV_PCM_FORMAT_S16_BE,
SNDRV_PCM_FORMAT_U16 = SNDRV_PCM_FORMAT_U16_BE,
SNDRV_PCM_FORMAT_S24 = SNDRV_PCM_FORMAT_S24_BE,
SNDRV_PCM_FORMAT_U24 = SNDRV_PCM_FORMAT_U24_BE,
SNDRV_PCM_FORMAT_S32 = SNDRV_PCM_FORMAT_S32_BE,
SNDRV_PCM_FORMAT_U32 = SNDRV_PCM_FORMAT_U32_BE,
SNDRV_PCM_FORMAT_FLOAT = SNDRV_PCM_FORMAT_FLOAT_BE,
SNDRV_PCM_FORMAT_FLOAT64 = SNDRV_PCM_FORMAT_FLOAT64_BE,
SNDRV_PCM_FORMAT_IEC958_SUBFRAME = SNDRV_PCM_FORMAT_IEC958_SUBFRAME_BE,
#endif
};
enum sndrv_pcm_subformat {
SNDRV_PCM_SUBFORMAT_STD = 0,
SNDRV_PCM_SUBFORMAT_LAST = SNDRV_PCM_SUBFORMAT_STD,
};
#define SNDRV_PCM_INFO_MMAP 0x00000001 /* hardware supports mmap */
#define SNDRV_PCM_INFO_MMAP_VALID 0x00000002 /* period data are valid during transfer */
#define SNDRV_PCM_INFO_DOUBLE 0x00000004 /* Double buffering needed for PCM start/stop */
#define SNDRV_PCM_INFO_BATCH 0x00000010 /* double buffering */
#define SNDRV_PCM_INFO_INTERLEAVED 0x00000100 /* channels are interleaved */
#define SNDRV_PCM_INFO_NONINTERLEAVED 0x00000200 /* channels are not interleaved */
#define SNDRV_PCM_INFO_COMPLEX 0x00000400 /* complex frame organization (mmap only) */
#define SNDRV_PCM_INFO_BLOCK_TRANSFER 0x00010000 /* hardware transfer block of samples */
#define SNDRV_PCM_INFO_OVERRANGE 0x00020000 /* hardware supports ADC (capture) overrange detection */
#define SNDRV_PCM_INFO_RESUME 0x00040000 /* hardware supports stream resume after suspend */
#define SNDRV_PCM_INFO_PAUSE 0x00080000 /* pause ioctl is supported */
#define SNDRV_PCM_INFO_HALF_DUPLEX 0x00100000 /* only half duplex */
#define SNDRV_PCM_INFO_JOINT_DUPLEX 0x00200000 /* playback and capture stream are somewhat correlated */
#define SNDRV_PCM_INFO_SYNC_START 0x00400000 /* pcm support some kind of sync go */
#define SNDRV_PCM_INFO_NO_PERIOD_WAKEUP 0x00800000 /* period wakeup can be disabled */
enum sndrv_pcm_state {
SNDRV_PCM_STATE_OPEN = 0, /* stream is open */
SNDRV_PCM_STATE_SETUP, /* stream has a setup */
SNDRV_PCM_STATE_PREPARED, /* stream is ready to start */
SNDRV_PCM_STATE_RUNNING, /* stream is running */
SNDRV_PCM_STATE_XRUN, /* stream reached an xrun */
SNDRV_PCM_STATE_DRAINING, /* stream is draining */
SNDRV_PCM_STATE_PAUSED, /* stream is paused */
SNDRV_PCM_STATE_SUSPENDED, /* hardware is suspended */
SNDRV_PCM_STATE_DISCONNECTED, /* hardware is disconnected */
SNDRV_PCM_STATE_LAST = SNDRV_PCM_STATE_DISCONNECTED,
};
enum {
SNDRV_PCM_MMAP_OFFSET_DATA = 0x00000000,
SNDRV_PCM_MMAP_OFFSET_STATUS = 0x80000000,
SNDRV_PCM_MMAP_OFFSET_CONTROL = 0x81000000,
};
union sndrv_pcm_sync_id {
unsigned char id[16];
unsigned short id16[8];
unsigned int id32[4];
};
struct sndrv_pcm_info {
unsigned int device; /* RO/WR (control): device number */
unsigned int subdevice; /* RO/WR (control): subdevice number */
int stream; /* RO/WR (control): stream 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 sndrv_pcm_sync_id sync; /* hardware synchronization ID */
unsigned char reserved[64]; /* reserved for future... */
};
enum sndrv_pcm_hw_param {
SNDRV_PCM_HW_PARAM_ACCESS = 0, /* Access type */
SNDRV_PCM_HW_PARAM_FIRST_MASK = SNDRV_PCM_HW_PARAM_ACCESS,
SNDRV_PCM_HW_PARAM_FORMAT, /* Format */
SNDRV_PCM_HW_PARAM_SUBFORMAT, /* Subformat */
SNDRV_PCM_HW_PARAM_LAST_MASK = SNDRV_PCM_HW_PARAM_SUBFORMAT,
SNDRV_PCM_HW_PARAM_SAMPLE_BITS = 8, /* Bits per sample */
SNDRV_PCM_HW_PARAM_FIRST_INTERVAL = SNDRV_PCM_HW_PARAM_SAMPLE_BITS,
SNDRV_PCM_HW_PARAM_FRAME_BITS, /* Bits per frame */
SNDRV_PCM_HW_PARAM_CHANNELS, /* Channels */
SNDRV_PCM_HW_PARAM_RATE, /* Approx rate */
SNDRV_PCM_HW_PARAM_PERIOD_TIME, /* Approx distance between interrupts
in us */
SNDRV_PCM_HW_PARAM_PERIOD_SIZE, /* Approx frames between interrupts */
SNDRV_PCM_HW_PARAM_PERIOD_BYTES, /* Approx bytes between interrupts */
SNDRV_PCM_HW_PARAM_PERIODS, /* Approx interrupts per buffer */
SNDRV_PCM_HW_PARAM_BUFFER_TIME, /* Approx duration of buffer in us */
SNDRV_PCM_HW_PARAM_BUFFER_SIZE, /* Size of buffer in frames */
SNDRV_PCM_HW_PARAM_BUFFER_BYTES, /* Size of buffer in bytes */
SNDRV_PCM_HW_PARAM_TICK_TIME, /* Approx tick duration in us */
SNDRV_PCM_HW_PARAM_LAST_INTERVAL = SNDRV_PCM_HW_PARAM_TICK_TIME
};
#define SNDRV_PCM_HW_PARAMS_NORESAMPLE (1<<0) /* avoid rate resampling */
#define SNDRV_PCM_HW_PARAMS_EXPORT_BUFFER (1<<1) /* export buffer */
#define SNDRV_PCM_HW_PARAMS_NO_PERIOD_WAKEUP (1<<2) /* disable period wakeups */
struct sndrv_interval {
unsigned int min, max;
unsigned int openmin:1,
openmax:1,
integer:1,
empty:1;
};
#define SNDRV_MASK_MAX 256
struct sndrv_mask {
u_int32_t bits[(SNDRV_MASK_MAX+31)/32];
};
struct sndrv_pcm_hw_params {
unsigned int flags;
struct sndrv_mask masks[SNDRV_PCM_HW_PARAM_LAST_MASK -
SNDRV_PCM_HW_PARAM_FIRST_MASK + 1];
struct sndrv_mask mres[5]; /* reserved masks */
struct sndrv_interval intervals[SNDRV_PCM_HW_PARAM_LAST_INTERVAL -
SNDRV_PCM_HW_PARAM_FIRST_INTERVAL + 1];
struct sndrv_interval ires[9]; /* reserved intervals */
unsigned int rmask; /* W: requested masks */
unsigned int cmask; /* R: changed masks */
unsigned int info; /* R: Info flags for returned setup */
unsigned int msbits; /* R: used most significant bits */
unsigned int rate_num; /* R: rate numerator */
unsigned int rate_den; /* R: rate denominator */
sndrv_pcm_uframes_t fifo_size; /* R: chip FIFO size in frames */
unsigned char reserved[64]; /* reserved for future */
};
enum sndrv_pcm_tstamp {
SNDRV_PCM_TSTAMP_NONE = 0,
SNDRV_PCM_TSTAMP_ENABLE,
SNDRV_PCM_TSTAMP_LAST = SNDRV_PCM_TSTAMP_ENABLE,
};
struct sndrv_pcm_sw_params {
int tstamp_mode; /* timestamp mode */
unsigned int period_step;
unsigned int sleep_min; /* min ticks to sleep */
sndrv_pcm_uframes_t avail_min; /* min avail frames for wakeup */
sndrv_pcm_uframes_t xfer_align; /* xfer size need to be a multiple */
sndrv_pcm_uframes_t start_threshold; /* min hw_avail frames for automatic start */
sndrv_pcm_uframes_t stop_threshold; /* min avail frames for automatic stop */
sndrv_pcm_uframes_t silence_threshold; /* min distance from noise for silence filling */
sndrv_pcm_uframes_t silence_size; /* silence block size */
sndrv_pcm_uframes_t boundary; /* pointers wrap point */
unsigned char reserved[60]; /* reserved for future */
unsigned int period_event; /* for alsa-lib implementation */
};
struct sndrv_pcm_channel_info {
unsigned int channel;
long offset; /* mmap offset */
unsigned int first; /* offset to first sample in bits */
unsigned int step; /* samples distance in bits */
};
struct sndrv_pcm_status {
int state; /* stream state */
struct timespec trigger_tstamp; /* time when stream was started/stopped/paused */
struct timespec tstamp; /* reference timestamp */
sndrv_pcm_uframes_t appl_ptr; /* appl ptr */
sndrv_pcm_uframes_t hw_ptr; /* hw ptr */
sndrv_pcm_sframes_t delay; /* current delay in frames */
sndrv_pcm_uframes_t avail; /* number of frames available */
sndrv_pcm_uframes_t avail_max; /* max frames available on hw since last status */
sndrv_pcm_uframes_t overrange; /* count of ADC (capture) overrange detections from last status */
int suspended_state; /* suspended stream state */
unsigned char reserved[60]; /* must be filled with zero */
};
struct sndrv_pcm_mmap_status {
int state; /* RO: state - SNDRV_PCM_STATE_XXXX */
int pad1; /* Needed for 64 bit alignment */
sndrv_pcm_uframes_t hw_ptr; /* RO: hw ptr (0...boundary-1) */
struct timespec tstamp; /* Timestamp */
int suspended_state; /* RO: suspended stream state */
};
struct sndrv_pcm_mmap_control {
sndrv_pcm_uframes_t appl_ptr; /* RW: appl ptr (0...boundary-1) */
sndrv_pcm_uframes_t avail_min; /* RW: min available frames for wakeup */
};
#define SNDRV_PCM_SYNC_PTR_HWSYNC (1<<0) /* execute hwsync */
#define SNDRV_PCM_SYNC_PTR_APPL (1<<1) /* get appl_ptr from driver (r/w op) */
#define SNDRV_PCM_SYNC_PTR_AVAIL_MIN (1<<2) /* get avail_min from driver */
struct sndrv_pcm_sync_ptr {
unsigned int flags;
union {
struct sndrv_pcm_mmap_status status;
unsigned char reserved[64];
} s;
union {
struct sndrv_pcm_mmap_control control;
unsigned char reserved[64];
} c;
};
struct sndrv_xferi {
sndrv_pcm_sframes_t result;
void *buf;
sndrv_pcm_uframes_t frames;
};
struct sndrv_xfern {
sndrv_pcm_sframes_t result;
void **bufs;
sndrv_pcm_uframes_t frames;
};
enum {
SNDRV_PCM_TSTAMP_TYPE_GETTIMEOFDAY = 0, /* gettimeofday equivalent */
SNDRV_PCM_TSTAMP_TYPE_MONOTONIC, /* posix_clock_monotonic equivalent */
SNDRV_PCM_TSTAMP_TYPE_LAST = SNDRV_PCM_TSTAMP_TYPE_MONOTONIC,
};
/* channel positions */
enum {
/* this follows the alsa-lib mixer channel value + 1*/
SNDRV_CHMAP_UNKNOWN = 0,
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_LAST = SNDRV_CHMAP_TC,
};
enum {
SNDRV_PCM_IOCTL_PVERSION = _IOR('A', 0x00, int),
SNDRV_PCM_IOCTL_INFO = _IOR('A', 0x01, struct sndrv_pcm_info),
SNDRV_PCM_IOCTL_TSTAMP = _IOW('A', 0x02, int),
SNDRV_PCM_IOCTL_TTSTAMP = _IOW('A', 0x03, int),
SNDRV_PCM_IOCTL_HW_REFINE = _IOWR('A', 0x10, struct sndrv_pcm_hw_params),
SNDRV_PCM_IOCTL_HW_PARAMS = _IOWR('A', 0x11, struct sndrv_pcm_hw_params),
SNDRV_PCM_IOCTL_HW_FREE = _IO('A', 0x12),
SNDRV_PCM_IOCTL_SW_PARAMS = _IOWR('A', 0x13, struct sndrv_pcm_sw_params),
SNDRV_PCM_IOCTL_STATUS = _IOR('A', 0x20, struct sndrv_pcm_status),
SNDRV_PCM_IOCTL_DELAY = _IOR('A', 0x21, sndrv_pcm_sframes_t),
SNDRV_PCM_IOCTL_HWSYNC = _IO('A', 0x22),
SNDRV_PCM_IOCTL_SYNC_PTR = _IOWR('A', 0x23, struct sndrv_pcm_sync_ptr),
SNDRV_PCM_IOCTL_CHANNEL_INFO = _IOR('A', 0x32, struct sndrv_pcm_channel_info),
SNDRV_PCM_IOCTL_PREPARE = _IO('A', 0x40),
SNDRV_PCM_IOCTL_RESET = _IO('A', 0x41),
SNDRV_PCM_IOCTL_START = _IO('A', 0x42),
SNDRV_PCM_IOCTL_DROP = _IO('A', 0x43),
SNDRV_PCM_IOCTL_DRAIN = _IO('A', 0x44),
SNDRV_PCM_IOCTL_PAUSE = _IOW('A', 0x45, int),
SNDRV_PCM_IOCTL_REWIND = _IOW('A', 0x46, sndrv_pcm_uframes_t),
SNDRV_PCM_IOCTL_RESUME = _IO('A', 0x47),
SNDRV_PCM_IOCTL_XRUN = _IO('A', 0x48),
SNDRV_PCM_IOCTL_FORWARD = _IOW('A', 0x49, sndrv_pcm_uframes_t),
SNDRV_PCM_IOCTL_WRITEI_FRAMES = _IOW('A', 0x50, struct sndrv_xferi),
SNDRV_PCM_IOCTL_READI_FRAMES = _IOR('A', 0x51, struct sndrv_xferi),
SNDRV_PCM_IOCTL_WRITEN_FRAMES = _IOW('A', 0x52, struct sndrv_xfern),
SNDRV_PCM_IOCTL_READN_FRAMES = _IOR('A', 0x53, struct sndrv_xfern),
SNDRV_PCM_IOCTL_LINK = _IOW('A', 0x60, int),
SNDRV_PCM_IOCTL_UNLINK = _IO('A', 0x61),
};
/* Trick to make alsa-lib/acinclude.m4 happy */
#define SNDRV_PCM_IOCTL_REWIND SNDRV_PCM_IOCTL_REWIND
/*****************************************************************************
* *
* MIDI v1.0 interface *
* *
*****************************************************************************/
/*
* Raw MIDI section - /dev/snd/midi??
*/
#define SNDRV_RAWMIDI_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 0)
enum sndrv_rawmidi_stream {
SNDRV_RAWMIDI_STREAM_OUTPUT = 0,
SNDRV_RAWMIDI_STREAM_INPUT,
SNDRV_RAWMIDI_STREAM_LAST = SNDRV_RAWMIDI_STREAM_INPUT,
};
#define SNDRV_RAWMIDI_INFO_OUTPUT 0x00000001
#define SNDRV_RAWMIDI_INFO_INPUT 0x00000002
#define SNDRV_RAWMIDI_INFO_DUPLEX 0x00000004
struct sndrv_rawmidi_info {
unsigned int device; /* RO/WR (control): device number */
unsigned int subdevice; /* RO/WR (control): subdevice number */
int stream; /* WR: stream */
int card; /* R: card number */
unsigned int flags; /* SNDRV_RAWMIDI_INFO_XXXX */
unsigned char id[64]; /* ID (user selectable) */
unsigned char name[80]; /* name of device */
unsigned char subname[32]; /* name of active or selected subdevice */
unsigned int subdevices_count;
unsigned int subdevices_avail;
unsigned char reserved[64]; /* reserved for future use */
};
struct sndrv_rawmidi_params {
int stream;
size_t buffer_size; /* queue size in bytes */
size_t avail_min; /* minimum avail bytes for wakeup */
unsigned int no_active_sensing: 1; /* do not send active sensing byte in close() */
unsigned char reserved[16]; /* reserved for future use */
};
struct sndrv_rawmidi_status {
int stream;
struct timespec tstamp; /* Timestamp */
size_t avail; /* available bytes */
size_t xruns; /* count of overruns since last status (in bytes) */
unsigned char reserved[16]; /* reserved for future use */
};
enum {
SNDRV_RAWMIDI_IOCTL_PVERSION = _IOR('W', 0x00, int),
SNDRV_RAWMIDI_IOCTL_INFO = _IOR('W', 0x01, struct sndrv_rawmidi_info),
SNDRV_RAWMIDI_IOCTL_PARAMS = _IOWR('W', 0x10, struct sndrv_rawmidi_params),
SNDRV_RAWMIDI_IOCTL_STATUS = _IOWR('W', 0x20, struct sndrv_rawmidi_status),
SNDRV_RAWMIDI_IOCTL_DROP = _IOW('W', 0x30, int),
SNDRV_RAWMIDI_IOCTL_DRAIN = _IOW('W', 0x31, int),
};
/*
* Timer section - /dev/snd/timer
*/
#define SNDRV_TIMER_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 6)
enum sndrv_timer_class {
SNDRV_TIMER_CLASS_NONE = -1,
SNDRV_TIMER_CLASS_SLAVE = 0,
SNDRV_TIMER_CLASS_GLOBAL,
SNDRV_TIMER_CLASS_CARD,
SNDRV_TIMER_CLASS_PCM,
SNDRV_TIMER_CLASS_LAST = SNDRV_TIMER_CLASS_PCM,
};
/* slave timer classes */
enum sndrv_timer_slave_class {
SNDRV_TIMER_SCLASS_NONE = 0,
SNDRV_TIMER_SCLASS_APPLICATION,
SNDRV_TIMER_SCLASS_SEQUENCER, /* alias */
SNDRV_TIMER_SCLASS_OSS_SEQUENCER, /* alias */
SNDRV_TIMER_SCLASS_LAST = SNDRV_TIMER_SCLASS_OSS_SEQUENCER,
};
/* global timers (device member) */
#define SNDRV_TIMER_GLOBAL_SYSTEM 0
#define SNDRV_TIMER_GLOBAL_RTC 1
#define SNDRV_TIMER_GLOBAL_HPET 2
#define SNDRV_TIMER_GLOBAL_HRTIMER 3
/* info flags */
#define SNDRV_TIMER_FLG_SLAVE (1<<0) /* cannot be controlled */
struct sndrv_timer_id {
int dev_class;
int dev_sclass;
int card;
int device;
int subdevice;
};
struct sndrv_timer_ginfo {
struct sndrv_timer_id tid; /* requested timer ID */
unsigned int flags; /* timer flags - SNDRV_TIMER_FLG_* */
int card; /* card number */
unsigned char id[64]; /* timer identification */
unsigned char name[80]; /* timer name */
unsigned long reserved0; /* reserved for future use */
unsigned long resolution; /* average period resolution in ns */
unsigned long resolution_min; /* minimal period resolution in ns */
unsigned long resolution_max; /* maximal period resolution in ns */
unsigned int clients; /* active timer clients */
unsigned char reserved[32];
};
struct sndrv_timer_gparams {
struct sndrv_timer_id tid; /* requested timer ID */
unsigned long period_num; /* requested precise period duration (in seconds) - numerator */
unsigned long period_den; /* requested precise period duration (in seconds) - denominator */
unsigned char reserved[32];
};
struct sndrv_timer_gstatus {
struct sndrv_timer_id tid; /* requested timer ID */
unsigned long resolution; /* current period resolution in ns */
unsigned long resolution_num; /* precise current period resolution (in seconds) - numerator */
unsigned long resolution_den; /* precise current period resolution (in seconds) - denominator */
unsigned char reserved[32];
};
struct sndrv_timer_select {
struct sndrv_timer_id id; /* bind to timer ID */
unsigned char reserved[32]; /* reserved */
};
struct sndrv_timer_info {
unsigned int flags; /* timer flags - SNDRV_TIMER_FLG_* */
int card; /* card number */
unsigned char id[64]; /* timer identificator */
unsigned char name[80]; /* timer name */
unsigned long reserved0; /* reserved for future use */
unsigned long resolution; /* average period resolution in ns */
unsigned char reserved[64]; /* reserved */
};
#define SNDRV_TIMER_PSFLG_AUTO (1<<0) /* auto start, otherwise one-shot */
#define SNDRV_TIMER_PSFLG_EXCLUSIVE (1<<1) /* exclusive use, precise start/stop/pause/continue */
#define SNDRV_TIMER_PSFLG_EARLY_EVENT (1<<2) /* write early event to the poll queue */
struct sndrv_timer_params {
unsigned int flags; /* flags - SNDRV_MIXER_PSFLG_* */
unsigned int ticks; /* requested resolution in ticks */
unsigned int queue_size; /* total size of queue (32-1024) */
unsigned int reserved0; /* reserved, was: failure locations */
unsigned int filter; /* event filter (bitmask of SNDRV_TIMER_EVENT_*) */
unsigned char reserved[60]; /* reserved */
};
struct sndrv_timer_status {
struct timespec tstamp; /* Timestamp - last update */
unsigned int resolution; /* current period resolution in ns */
unsigned int lost; /* counter of master tick lost */
unsigned int overrun; /* count of read queue overruns */
unsigned int queue; /* used queue size */
unsigned char reserved[64]; /* reserved */
};
enum {
SNDRV_TIMER_IOCTL_PVERSION = _IOR('T', 0x00, int),
SNDRV_TIMER_IOCTL_NEXT_DEVICE = _IOWR('T', 0x01, struct sndrv_timer_id),
SNDRV_TIMER_IOCTL_TREAD = _IOW('T', 0x02, int),
SNDRV_TIMER_IOCTL_GINFO = _IOWR('T', 0x03, struct sndrv_timer_ginfo),
SNDRV_TIMER_IOCTL_GPARAMS = _IOW('T', 0x04, struct sndrv_timer_gparams),
SNDRV_TIMER_IOCTL_GSTATUS = _IOWR('T', 0x05, struct sndrv_timer_gstatus),
SNDRV_TIMER_IOCTL_SELECT = _IOW('T', 0x10, struct sndrv_timer_select),
SNDRV_TIMER_IOCTL_INFO = _IOR('T', 0x11, struct sndrv_timer_info),
SNDRV_TIMER_IOCTL_PARAMS = _IOW('T', 0x12, struct sndrv_timer_params),
SNDRV_TIMER_IOCTL_STATUS = _IOR('T', 0x14, struct sndrv_timer_status),
/* The following four ioctls are changed since 1.0.9 due to confliction */
SNDRV_TIMER_IOCTL_START = _IO('T', 0xa0),
SNDRV_TIMER_IOCTL_STOP = _IO('T', 0xa1),
SNDRV_TIMER_IOCTL_CONTINUE = _IO('T', 0xa2),
SNDRV_TIMER_IOCTL_PAUSE = _IO('T', 0xa3),
};
struct sndrv_timer_read {
unsigned int resolution;
unsigned int ticks;
};
enum sndrv_timer_event {
SNDRV_TIMER_EVENT_RESOLUTION = 0, /* val = resolution in ns */
SNDRV_TIMER_EVENT_TICK, /* val = ticks */
SNDRV_TIMER_EVENT_START, /* val = resolution in ns */
SNDRV_TIMER_EVENT_STOP, /* val = 0 */
SNDRV_TIMER_EVENT_CONTINUE, /* val = resolution in ns */
SNDRV_TIMER_EVENT_PAUSE, /* val = 0 */
SNDRV_TIMER_EVENT_EARLY, /* val = 0, early event */
SNDRV_TIMER_EVENT_SUSPEND, /* val = 0 */
SNDRV_TIMER_EVENT_RESUME, /* val = resolution in ns */
/* master timer events for slave timer instances */
SNDRV_TIMER_EVENT_MSTART = SNDRV_TIMER_EVENT_START + 10,
SNDRV_TIMER_EVENT_MSTOP = SNDRV_TIMER_EVENT_STOP + 10,
SNDRV_TIMER_EVENT_MCONTINUE = SNDRV_TIMER_EVENT_CONTINUE + 10,
SNDRV_TIMER_EVENT_MPAUSE = SNDRV_TIMER_EVENT_PAUSE + 10,
SNDRV_TIMER_EVENT_MSUSPEND = SNDRV_TIMER_EVENT_SUSPEND + 10,
SNDRV_TIMER_EVENT_MRESUME = SNDRV_TIMER_EVENT_RESUME + 10,
};
struct sndrv_timer_tread {
int event;
struct timespec tstamp;
unsigned int val;
};
/****************************************************************************
* *
* Section for driver control interface - /dev/snd/control? *
* *
****************************************************************************/
#define SNDRV_CTL_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 7)
struct sndrv_ctl_card_info {
int card; /* card number */
int pad; /* reserved for future (was type) */
unsigned char id[16]; /* ID of card (user selectable) */
unsigned char driver[16]; /* Driver name */
unsigned char name[32]; /* Short name of soundcard */
unsigned char longname[80]; /* name + info text about soundcard */
unsigned char reserved_[16]; /* reserved for future (was ID of mixer) */
unsigned char mixername[80]; /* visual mixer identification */
unsigned char components[128]; /* card components / fine identification, delimited with one space (AC97 etc..) */
};
enum sndrv_ctl_elem_type {
SNDRV_CTL_ELEM_TYPE_NONE = 0, /* invalid */
SNDRV_CTL_ELEM_TYPE_BOOLEAN, /* boolean type */
SNDRV_CTL_ELEM_TYPE_INTEGER, /* integer type */
SNDRV_CTL_ELEM_TYPE_ENUMERATED, /* enumerated type */
SNDRV_CTL_ELEM_TYPE_BYTES, /* byte array */
SNDRV_CTL_ELEM_TYPE_IEC958, /* IEC958 (S/PDIF) setup */
SNDRV_CTL_ELEM_TYPE_INTEGER64, /* 64-bit integer type */
SNDRV_CTL_ELEM_TYPE_LAST = SNDRV_CTL_ELEM_TYPE_INTEGER64,
};
enum sndrv_ctl_elem_iface {
SNDRV_CTL_ELEM_IFACE_CARD = 0, /* global control */
SNDRV_CTL_ELEM_IFACE_HWDEP, /* hardware dependent device */
SNDRV_CTL_ELEM_IFACE_MIXER, /* virtual mixer device */
SNDRV_CTL_ELEM_IFACE_PCM, /* PCM device */
SNDRV_CTL_ELEM_IFACE_RAWMIDI, /* RawMidi device */
SNDRV_CTL_ELEM_IFACE_TIMER, /* timer device */
SNDRV_CTL_ELEM_IFACE_SEQUENCER, /* sequencer client */
SNDRV_CTL_ELEM_IFACE_LAST = SNDRV_CTL_ELEM_IFACE_SEQUENCER,
};
#define SNDRV_CTL_ELEM_ACCESS_READ (1<<0)
#define SNDRV_CTL_ELEM_ACCESS_WRITE (1<<1)
#define SNDRV_CTL_ELEM_ACCESS_READWRITE (SNDRV_CTL_ELEM_ACCESS_READ|SNDRV_CTL_ELEM_ACCESS_WRITE)
#define SNDRV_CTL_ELEM_ACCESS_VOLATILE (1<<2) /* control value may be changed without a notification */
#define SNDRV_CTL_ELEM_ACCESS_TIMESTAMP (1<<3) /* when was control changed */
#define SNDRV_CTL_ELEM_ACCESS_TLV_READ (1<<4) /* TLV read is 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 */
struct sndrv_ctl_elem_id {
unsigned int numid; /* numeric identifier, zero = invalid */
int iface; /* interface identifier */
unsigned int device; /* device/client number */
unsigned int subdevice; /* subdevice (substream) number */
unsigned char name[44]; /* ASCII name of item */
unsigned int index; /* index of item */
};
struct sndrv_ctl_elem_list {
unsigned int offset; /* W: first element ID to get */
unsigned int space; /* W: count of element IDs to get */
unsigned int used; /* R: count of element IDs set */
unsigned int count; /* R: count of all elements */
struct sndrv_ctl_elem_id *pids; /* R: IDs */
unsigned char reserved[50];
};
struct sndrv_ctl_elem_info {
struct sndrv_ctl_elem_id id; /* W: element ID */
int type; /* R: value type - SNDRV_CTL_ELEM_TYPE_* */
unsigned int access; /* R: value access (bitmask) - SNDRV_CTL_ELEM_ACCESS_* */
unsigned int count; /* count of values */
pid_t owner; /* owner's PID of this control */
union {
struct {
long min; /* R: minimum value */
long max; /* R: maximum value */
long step; /* R: step (0 variable) */
} integer;
struct {
long long min; /* R: minimum value */
long long max; /* R: maximum value */
long long step; /* R: step (0 variable) */
} integer64;
struct {
unsigned int items; /* R: number of items */
unsigned int item; /* W: item number */
char name[64]; /* R: value name */
__u64 names_ptr; /* W: names list (ELEM_ADD only) */
unsigned int names_length;
} enumerated;
unsigned char reserved[128];
} value;
union {
unsigned short d[4]; /* dimensions */
unsigned short *d_ptr; /* indirect - obsoleted */
} dimen;
unsigned char reserved[64-4*sizeof(unsigned short)];
};
struct sndrv_ctl_elem_value {
struct sndrv_ctl_elem_id id; /* W: element ID */
unsigned int indirect: 1; /* 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 sndrv_aes_iec958 iec958;
} value; /* RO */
struct timespec tstamp;
unsigned char reserved[128-sizeof(struct timespec)];
};
struct sndrv_ctl_tlv {
unsigned int numid; /* control element numeric identification */
unsigned int length; /* in bytes aligned to 4 */
unsigned int tlv[0]; /* first TLV */
};
enum {
SNDRV_CTL_IOCTL_PVERSION = _IOR('U', 0x00, int),
SNDRV_CTL_IOCTL_CARD_INFO = _IOR('U', 0x01, struct sndrv_ctl_card_info),
SNDRV_CTL_IOCTL_ELEM_LIST = _IOWR('U', 0x10, struct sndrv_ctl_elem_list),
SNDRV_CTL_IOCTL_ELEM_INFO = _IOWR('U', 0x11, struct sndrv_ctl_elem_info),
SNDRV_CTL_IOCTL_ELEM_READ = _IOWR('U', 0x12, struct sndrv_ctl_elem_value),
SNDRV_CTL_IOCTL_ELEM_WRITE = _IOWR('U', 0x13, struct sndrv_ctl_elem_value),
SNDRV_CTL_IOCTL_ELEM_LOCK = _IOW('U', 0x14, struct sndrv_ctl_elem_id),
SNDRV_CTL_IOCTL_ELEM_UNLOCK = _IOW('U', 0x15, struct sndrv_ctl_elem_id),
SNDRV_CTL_IOCTL_SUBSCRIBE_EVENTS = _IOWR('U', 0x16, int),
SNDRV_CTL_IOCTL_ELEM_ADD = _IOWR('U', 0x17, struct sndrv_ctl_elem_info),
SNDRV_CTL_IOCTL_ELEM_REPLACE = _IOWR('U', 0x18, struct sndrv_ctl_elem_info),
SNDRV_CTL_IOCTL_ELEM_REMOVE = _IOWR('U', 0x19, struct sndrv_ctl_elem_id),
SNDRV_CTL_IOCTL_TLV_READ = _IOWR('U', 0x1a, struct sndrv_ctl_tlv),
SNDRV_CTL_IOCTL_TLV_WRITE = _IOWR('U', 0x1b, struct sndrv_ctl_tlv),
SNDRV_CTL_IOCTL_TLV_COMMAND = _IOWR('U', 0x1c, struct sndrv_ctl_tlv),
SNDRV_CTL_IOCTL_HWDEP_NEXT_DEVICE = _IOWR('U', 0x20, int),
SNDRV_CTL_IOCTL_HWDEP_INFO = _IOR('U', 0x21, struct sndrv_hwdep_info),
SNDRV_CTL_IOCTL_PCM_NEXT_DEVICE = _IOR('U', 0x30, int),
SNDRV_CTL_IOCTL_PCM_INFO = _IOWR('U', 0x31, struct sndrv_pcm_info),
SNDRV_CTL_IOCTL_PCM_PREFER_SUBDEVICE = _IOW('U', 0x32, int),
SNDRV_CTL_IOCTL_RAWMIDI_NEXT_DEVICE = _IOWR('U', 0x40, int),
SNDRV_CTL_IOCTL_RAWMIDI_INFO = _IOWR('U', 0x41, struct sndrv_rawmidi_info),
SNDRV_CTL_IOCTL_RAWMIDI_PREFER_SUBDEVICE = _IOW('U', 0x42, int),
SNDRV_CTL_IOCTL_POWER = _IOWR('U', 0xd0, int),
SNDRV_CTL_IOCTL_POWER_STATE = _IOR('U', 0xd1, int),
};
/*
* Read interface.
*/
enum sndrv_ctl_event_type {
SNDRV_CTL_EVENT_ELEM = 0,
SNDRV_CTL_EVENT_LAST = SNDRV_CTL_EVENT_ELEM,
};
#define SNDRV_CTL_EVENT_MASK_VALUE (1<<0) /* element value was changed */
#define SNDRV_CTL_EVENT_MASK_INFO (1<<1) /* element info was changed */
#define SNDRV_CTL_EVENT_MASK_ADD (1<<2) /* element was added */
#define SNDRV_CTL_EVENT_MASK_TLV (1<<3) /* element TLV tree was changed */
#define SNDRV_CTL_EVENT_MASK_REMOVE (~0U) /* element was removed */
struct sndrv_ctl_event {
int type; /* event type - SNDRV_CTL_EVENT_* */
union {
struct {
unsigned int mask;
struct sndrv_ctl_elem_id id;
} elem;
unsigned char data8[60];
} data;
};
/*
* Control names
*/
#define SNDRV_CTL_NAME_NONE ""
#define SNDRV_CTL_NAME_PLAYBACK "Playback "
#define SNDRV_CTL_NAME_CAPTURE "Capture "
#define SNDRV_CTL_NAME_IEC958_NONE ""
#define SNDRV_CTL_NAME_IEC958_SWITCH "Switch"
#define SNDRV_CTL_NAME_IEC958_VOLUME "Volume"
#define SNDRV_CTL_NAME_IEC958_DEFAULT "Default"
#define SNDRV_CTL_NAME_IEC958_MASK "Mask"
#define SNDRV_CTL_NAME_IEC958_CON_MASK "Con Mask"
#define SNDRV_CTL_NAME_IEC958_PRO_MASK "Pro Mask"
#define SNDRV_CTL_NAME_IEC958_PCM_STREAM "PCM Stream"
#define SNDRV_CTL_NAME_IEC958(expl,direction,what) "IEC958 " expl SNDRV_CTL_NAME_##direction SNDRV_CTL_NAME_IEC958_##what
#endif /* __SOUND_ASOUND_H */
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