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asound.h

/*
 *  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

#ifdef __KERNEL__
#include <linux/ioctl.h>
#include <linux/types.h>
#include <linux/time.h>
#include <asm/byteorder.h>

#ifdef  __LITTLE_ENDIAN
#define SNDRV_LITTLE_ENDIAN
#else
#ifdef __BIG_ENDIAN
#define SNDRV_BIG_ENDIAN
#else
#error "Unsupported endian..."
#endif
#endif

#endif /* __KERNEL__ **/

/*
 *  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 snd_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_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 */

      /* Don't forget to change the following: */
      SNDRV_HWDEP_IFACE_LAST = SNDRV_HWDEP_IFACE_SB_RC
};

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 __user *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 snd_hwdep_info),
      SNDRV_HWDEP_IOCTL_DSP_STATUS = _IOR('H', 0x02, struct snd_hwdep_dsp_status),
      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, 8)

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   ((__force snd_pcm_access_t) 0) /* interleaved mmap */
#define     SNDRV_PCM_ACCESS_MMAP_NONINTERLEAVED      ((__force snd_pcm_access_t) 1) /* noninterleaved mmap */
#define     SNDRV_PCM_ACCESS_MMAP_COMPLEX       ((__force snd_pcm_access_t) 2) /* complex mmap */
#define     SNDRV_PCM_ACCESS_RW_INTERLEAVED           ((__force snd_pcm_access_t) 3) /* readi/writei */
#define     SNDRV_PCM_ACCESS_RW_NONINTERLEAVED  ((__force 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     ((__force snd_pcm_format_t) 0)
#define     SNDRV_PCM_FORMAT_U8     ((__force snd_pcm_format_t) 1)
#define     SNDRV_PCM_FORMAT_S16_LE ((__force snd_pcm_format_t) 2)
#define     SNDRV_PCM_FORMAT_S16_BE ((__force snd_pcm_format_t) 3)
#define     SNDRV_PCM_FORMAT_U16_LE ((__force snd_pcm_format_t) 4)
#define     SNDRV_PCM_FORMAT_U16_BE ((__force snd_pcm_format_t) 5)
#define     SNDRV_PCM_FORMAT_S24_LE ((__force snd_pcm_format_t) 6) /* low three bytes */
#define     SNDRV_PCM_FORMAT_S24_BE ((__force snd_pcm_format_t) 7) /* low three bytes */
#define     SNDRV_PCM_FORMAT_U24_LE ((__force snd_pcm_format_t) 8) /* low three bytes */
#define     SNDRV_PCM_FORMAT_U24_BE ((__force snd_pcm_format_t) 9) /* low three bytes */
#define     SNDRV_PCM_FORMAT_S32_LE ((__force snd_pcm_format_t) 10)
#define     SNDRV_PCM_FORMAT_S32_BE ((__force snd_pcm_format_t) 11)
#define     SNDRV_PCM_FORMAT_U32_LE ((__force snd_pcm_format_t) 12)
#define     SNDRV_PCM_FORMAT_U32_BE ((__force snd_pcm_format_t) 13)
#define     SNDRV_PCM_FORMAT_FLOAT_LE     ((__force snd_pcm_format_t) 14) /* 4-byte float, IEEE-754 32-bit, range -1.0 to 1.0 */
#define     SNDRV_PCM_FORMAT_FLOAT_BE     ((__force snd_pcm_format_t) 15) /* 4-byte float, IEEE-754 32-bit, range -1.0 to 1.0 */
#define     SNDRV_PCM_FORMAT_FLOAT64_LE   ((__force snd_pcm_format_t) 16) /* 8-byte float, IEEE-754 64-bit, range -1.0 to 1.0 */
#define     SNDRV_PCM_FORMAT_FLOAT64_BE   ((__force 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 ((__force snd_pcm_format_t) 18) /* IEC-958 subframe, Little Endian */
#define     SNDRV_PCM_FORMAT_IEC958_SUBFRAME_BE ((__force snd_pcm_format_t) 19) /* IEC-958 subframe, Big Endian */
#define     SNDRV_PCM_FORMAT_MU_LAW       ((__force snd_pcm_format_t) 20)
#define     SNDRV_PCM_FORMAT_A_LAW        ((__force snd_pcm_format_t) 21)
#define     SNDRV_PCM_FORMAT_IMA_ADPCM    ((__force snd_pcm_format_t) 22)
#define     SNDRV_PCM_FORMAT_MPEG         ((__force snd_pcm_format_t) 23)
#define     SNDRV_PCM_FORMAT_GSM          ((__force snd_pcm_format_t) 24)
#define     SNDRV_PCM_FORMAT_SPECIAL      ((__force snd_pcm_format_t) 31)
#define     SNDRV_PCM_FORMAT_S24_3LE      ((__force snd_pcm_format_t) 32)     /* in three bytes */
#define     SNDRV_PCM_FORMAT_S24_3BE      ((__force snd_pcm_format_t) 33)     /* in three bytes */
#define     SNDRV_PCM_FORMAT_U24_3LE      ((__force snd_pcm_format_t) 34)     /* in three bytes */
#define     SNDRV_PCM_FORMAT_U24_3BE      ((__force snd_pcm_format_t) 35)     /* in three bytes */
#define     SNDRV_PCM_FORMAT_S20_3LE      ((__force snd_pcm_format_t) 36)     /* in three bytes */
#define     SNDRV_PCM_FORMAT_S20_3BE      ((__force snd_pcm_format_t) 37)     /* in three bytes */
#define     SNDRV_PCM_FORMAT_U20_3LE      ((__force snd_pcm_format_t) 38)     /* in three bytes */
#define     SNDRV_PCM_FORMAT_U20_3BE      ((__force snd_pcm_format_t) 39)     /* in three bytes */
#define     SNDRV_PCM_FORMAT_S18_3LE      ((__force snd_pcm_format_t) 40)     /* in three bytes */
#define     SNDRV_PCM_FORMAT_S18_3BE      ((__force snd_pcm_format_t) 41)     /* in three bytes */
#define     SNDRV_PCM_FORMAT_U18_3LE      ((__force snd_pcm_format_t) 42)     /* in three bytes */
#define     SNDRV_PCM_FORMAT_U18_3BE      ((__force snd_pcm_format_t) 43)     /* in three bytes */
#define     SNDRV_PCM_FORMAT_LAST         SNDRV_PCM_FORMAT_U18_3BE

#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
#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
#endif

typedef int __bitwise snd_pcm_subformat_t;
#define     SNDRV_PCM_SUBFORMAT_STD       ((__force 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_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 */

typedef int __bitwise snd_pcm_state_t;
#define     SNDRV_PCM_STATE_OPEN          ((__force snd_pcm_state_t) 0) /* stream is open */
#define     SNDRV_PCM_STATE_SETUP         ((__force snd_pcm_state_t) 1) /* stream has a setup */
#define     SNDRV_PCM_STATE_PREPARED      ((__force snd_pcm_state_t) 2) /* stream is ready to start */
#define     SNDRV_PCM_STATE_RUNNING       ((__force snd_pcm_state_t) 3) /* stream is running */
#define     SNDRV_PCM_STATE_XRUN          ((__force snd_pcm_state_t) 4) /* stream reached an xrun */
#define     SNDRV_PCM_STATE_DRAINING      ((__force snd_pcm_state_t) 5) /* stream is draining */
#define     SNDRV_PCM_STATE_PAUSED        ((__force snd_pcm_state_t) 6) /* stream is paused */
#define     SNDRV_PCM_STATE_SUSPENDED     ((__force snd_pcm_state_t) 7) /* hardware is suspended */
#define     SNDRV_PCM_STATE_DISCONNECTED  ((__force 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 = 0x80000000,
      SNDRV_PCM_MMAP_OFFSET_CONTROL = 0x81000000,
};

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 __bitwise snd_pcm_hw_param_t;
#define     SNDRV_PCM_HW_PARAM_ACCESS     ((__force snd_pcm_hw_param_t) 0) /* Access type */
#define     SNDRV_PCM_HW_PARAM_FORMAT     ((__force snd_pcm_hw_param_t) 1) /* Format */
#define     SNDRV_PCM_HW_PARAM_SUBFORMAT  ((__force snd_pcm_hw_param_t) 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      ((__force snd_pcm_hw_param_t) 8) /* Bits per sample */
#define     SNDRV_PCM_HW_PARAM_FRAME_BITS ((__force snd_pcm_hw_param_t) 9) /* Bits per frame */
#define     SNDRV_PCM_HW_PARAM_CHANNELS   ((__force snd_pcm_hw_param_t) 10) /* Channels */
#define     SNDRV_PCM_HW_PARAM_RATE       ((__force snd_pcm_hw_param_t) 11) /* Approx rate */
#define     SNDRV_PCM_HW_PARAM_PERIOD_TIME      ((__force snd_pcm_hw_param_t) 12) /* Approx distance between interrupts in us */
#define     SNDRV_PCM_HW_PARAM_PERIOD_SIZE      ((__force snd_pcm_hw_param_t) 13) /* Approx frames between interrupts */
#define     SNDRV_PCM_HW_PARAM_PERIOD_BYTES     ((__force snd_pcm_hw_param_t) 14) /* Approx bytes between interrupts */
#define     SNDRV_PCM_HW_PARAM_PERIODS    ((__force snd_pcm_hw_param_t) 15) /* Approx interrupts per buffer */
#define     SNDRV_PCM_HW_PARAM_BUFFER_TIME      ((__force snd_pcm_hw_param_t) 16) /* Approx duration of buffer in us */
#define     SNDRV_PCM_HW_PARAM_BUFFER_SIZE      ((__force snd_pcm_hw_param_t) 17) /* Size of buffer in frames */
#define     SNDRV_PCM_HW_PARAM_BUFFER_BYTES     ((__force snd_pcm_hw_param_t) 18) /* Size of buffer in bytes */
#define     SNDRV_PCM_HW_PARAM_TICK_TIME  ((__force snd_pcm_hw_param_t) 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 */

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 {
      u_int32_t 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_MMAP,
      SNDRV_PCM_TSTAMP_LAST = SNDRV_PCM_TSTAMP_MMAP,
};

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;       /* xfer size need to be a multiple */
      snd_pcm_uframes_t start_threshold;  /* min hw_avail frames for automatic start */
      snd_pcm_uframes_t stop_threshold;   /* min avail frames for automatic stop */
      snd_pcm_uframes_t silence_threshold;      /* min distance from noise for silence filling */
      snd_pcm_uframes_t silence_size;           /* silence block size */
      snd_pcm_uframes_t boundary;         /* pointers wrap point */
      unsigned char reserved[64];         /* reserved for future */
};

struct snd_pcm_channel_info {
      unsigned int channel;
      off_t offset;                 /* mmap offset */
      unsigned int first;           /* offset to first sample in bits */
      unsigned int step;            /* samples distance in bits */
};

struct snd_pcm_status {
      snd_pcm_state_t state;        /* stream state */
      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 */
      unsigned char reserved[60];   /* must be filled with zero */
};

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 timespec tstamp;       /* Timestamp */
      snd_pcm_state_t suspended_state; /* RO: suspended stream state */
};

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;
};

struct snd_xferi {
      snd_pcm_sframes_t result;
      void __user *buf;
      snd_pcm_uframes_t frames;
};

struct snd_xfern {
      snd_pcm_sframes_t result;
      void __user * __user *bufs;
      snd_pcm_uframes_t frames;
};

enum {
      SNDRV_PCM_IOCTL_PVERSION = _IOR('A', 0x00, int),
      SNDRV_PCM_IOCTL_INFO = _IOR('A', 0x01, struct snd_pcm_info),
      SNDRV_PCM_IOCTL_TSTAMP = _IOW('A', 0x02, int),
      SNDRV_PCM_IOCTL_HW_REFINE = _IOWR('A', 0x10, struct snd_pcm_hw_params),
      SNDRV_PCM_IOCTL_HW_PARAMS = _IOWR('A', 0x11, struct snd_pcm_hw_params),
      SNDRV_PCM_IOCTL_HW_FREE = _IO('A', 0x12),
      SNDRV_PCM_IOCTL_SW_PARAMS = _IOWR('A', 0x13, struct snd_pcm_sw_params),
      SNDRV_PCM_IOCTL_STATUS = _IOR('A', 0x20, struct snd_pcm_status),
      SNDRV_PCM_IOCTL_DELAY = _IOR('A', 0x21, snd_pcm_sframes_t),
      SNDRV_PCM_IOCTL_HWSYNC = _IO('A', 0x22),
      SNDRV_PCM_IOCTL_SYNC_PTR = _IOWR('A', 0x23, struct snd_pcm_sync_ptr),
      SNDRV_PCM_IOCTL_CHANNEL_INFO = _IOR('A', 0x32, struct snd_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, snd_pcm_uframes_t),
      SNDRV_PCM_IOCTL_RESUME = _IO('A', 0x47),
      SNDRV_PCM_IOCTL_XRUN = _IO('A', 0x48),
      SNDRV_PCM_IOCTL_FORWARD = _IOW('A', 0x49, snd_pcm_uframes_t),
      SNDRV_PCM_IOCTL_WRITEI_FRAMES = _IOW('A', 0x50, struct snd_xferi),
      SNDRV_PCM_IOCTL_READI_FRAMES = _IOR('A', 0x51, struct snd_xferi),
      SNDRV_PCM_IOCTL_WRITEN_FRAMES = _IOW('A', 0x52, struct snd_xfern),
      SNDRV_PCM_IOCTL_READN_FRAMES = _IOR('A', 0x53, struct snd_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_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 */
};

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 char reserved[16];   /* reserved for future use */
};

struct snd_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 snd_rawmidi_info),
      SNDRV_RAWMIDI_IOCTL_PARAMS = _IOWR('W', 0x10, struct snd_rawmidi_params),
      SNDRV_RAWMIDI_IOCTL_STATUS = _IOWR('W', 0x20, struct snd_rawmidi_status),
      SNDRV_RAWMIDI_IOCTL_DROP = _IOW('W', 0x30, int),
      SNDRV_RAWMIDI_IOCTL_DRAIN = _IOW('W', 0x31, int),
};

/*
 *  Timer section - /dev/snd/timer
 */

#define SNDRV_TIMER_VERSION         SNDRV_PROTOCOL_VERSION(2, 0, 5)

enum {
      SNDRV_TIMER_CLASS_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
#define SNDRV_TIMER_GLOBAL_HPET           2

/* 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_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 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 */
};

enum {
      SNDRV_TIMER_IOCTL_PVERSION = _IOR('T', 0x00, int),
      SNDRV_TIMER_IOCTL_NEXT_DEVICE = _IOWR('T', 0x01, struct snd_timer_id),
      SNDRV_TIMER_IOCTL_TREAD = _IOW('T', 0x02, int),
      SNDRV_TIMER_IOCTL_GINFO = _IOWR('T', 0x03, struct snd_timer_ginfo),
      SNDRV_TIMER_IOCTL_GPARAMS = _IOW('T', 0x04, struct snd_timer_gparams),
      SNDRV_TIMER_IOCTL_GSTATUS = _IOWR('T', 0x05, struct snd_timer_gstatus),
      SNDRV_TIMER_IOCTL_SELECT = _IOW('T', 0x10, struct snd_timer_select),
      SNDRV_TIMER_IOCTL_INFO = _IOR('T', 0x11, struct snd_timer_info),
      SNDRV_TIMER_IOCTL_PARAMS = _IOW('T', 0x12, struct snd_timer_params),
      SNDRV_TIMER_IOCTL_STATUS = _IOR('T', 0x14, struct snd_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 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;
      struct timespec tstamp;
      unsigned int val;
};

/****************************************************************************
 *                                                                          *
 *        Section for driver control interface - /dev/snd/control?          *
 *                                                                          *
 ****************************************************************************/

#define SNDRV_CTL_VERSION           SNDRV_PROTOCOL_VERSION(2, 0, 4)

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[80]; /* card components / fine identification, delimited with one space (AC97 etc..) */
      unsigned char reserved[48];   /* reserved for future */
};

typedef int __bitwise snd_ctl_elem_type_t;
#define     SNDRV_CTL_ELEM_TYPE_NONE      ((__force snd_ctl_elem_type_t) 0) /* invalid */
#define     SNDRV_CTL_ELEM_TYPE_BOOLEAN   ((__force snd_ctl_elem_type_t) 1) /* boolean type */
#define     SNDRV_CTL_ELEM_TYPE_INTEGER   ((__force snd_ctl_elem_type_t) 2) /* integer type */
#define     SNDRV_CTL_ELEM_TYPE_ENUMERATED      ((__force snd_ctl_elem_type_t) 3) /* enumerated type */
#define     SNDRV_CTL_ELEM_TYPE_BYTES     ((__force snd_ctl_elem_type_t) 4) /* byte array */
#define     SNDRV_CTL_ELEM_TYPE_IEC958    ((__force snd_ctl_elem_type_t) 5) /* IEC958 (S/PDIF) setup */
#define     SNDRV_CTL_ELEM_TYPE_INTEGER64 ((__force 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     ((__force snd_ctl_elem_iface_t) 0) /* global control */
#define     SNDRV_CTL_ELEM_IFACE_HWDEP    ((__force snd_ctl_elem_iface_t) 1) /* hardware dependent device */
#define     SNDRV_CTL_ELEM_IFACE_MIXER    ((__force snd_ctl_elem_iface_t) 2) /* virtual mixer device */
#define     SNDRV_CTL_ELEM_IFACE_PCM      ((__force snd_ctl_elem_iface_t) 3) /* PCM device */
#define     SNDRV_CTL_ELEM_IFACE_RAWMIDI  ((__force snd_ctl_elem_iface_t) 4) /* RawMidi device */
#define     SNDRV_CTL_ELEM_IFACE_TIMER    ((__force snd_ctl_elem_iface_t) 5) /* timer device */
#define     SNDRV_CTL_ELEM_IFACE_SEQUENCER      ((__force 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 */
#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 */
#define SNDRV_CTL_ELEM_ACCESS_DINDIRECT         (1<<30)     /* indirect access for matrix dimensions in the info structure */
#define SNDRV_CTL_ELEM_ACCESS_INDIRECT          (1<<31)     /* indirect access for element value in the value structure */

/* 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 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[44];           /* 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 __user *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 */
      pid_t owner;                  /* owner's PID of this control */
      union {
            struct {
                  long min;         /* R: minimum value */
                  long max;         /* R: maximum value */
                  long step;        /* R: step (0 variable) */
            } integer;
            struct {
                  long long min;          /* R: minimum value */
                  long long max;          /* R: maximum value */
                  long long step;         /* R: step (0 variable) */
            } integer64;
            struct {
                  unsigned int items;     /* R: number of items */
                  unsigned int item;      /* W: item number */
                  char name[64];          /* R: value name */
            } enumerated;
            unsigned char reserved[128];
      } value;
      union {
            unsigned short d[4];          /* dimensions */
            unsigned short *d_ptr;        /* indirect */
      } dimen;
      unsigned char reserved[64-4*sizeof(unsigned short)];
};

struct snd_ctl_elem_value {
      struct snd_ctl_elem_id id;    /* W: element ID */
      unsigned int indirect: 1;     /* W: use indirect pointer (xxx_ptr member) */
        union {
            union {
                  long value[128];
                  long *value_ptr;
            } integer;
            union {
                  long long value[64];
                  long long *value_ptr;
            } integer64;
            union {
                  unsigned int item[128];
                  unsigned int *item_ptr;
            } enumerated;
            union {
                  unsigned char data[512];
                  unsigned char *data_ptr;
            } bytes;
            struct snd_aes_iec958 iec958;
        } value;                /* RO */
      struct timespec tstamp;
        unsigned char reserved[128-sizeof(struct timespec)];
};

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 */
};

enum {
      SNDRV_CTL_IOCTL_PVERSION = _IOR('U', 0x00, int),
      SNDRV_CTL_IOCTL_CARD_INFO = _IOR('U', 0x01, struct snd_ctl_card_info),
      SNDRV_CTL_IOCTL_ELEM_LIST = _IOWR('U', 0x10, struct snd_ctl_elem_list),
      SNDRV_CTL_IOCTL_ELEM_INFO = _IOWR('U', 0x11, struct snd_ctl_elem_info),
      SNDRV_CTL_IOCTL_ELEM_READ = _IOWR('U', 0x12, struct snd_ctl_elem_value),
      SNDRV_CTL_IOCTL_ELEM_WRITE = _IOWR('U', 0x13, struct snd_ctl_elem_value),
      SNDRV_CTL_IOCTL_ELEM_LOCK = _IOW('U', 0x14, struct snd_ctl_elem_id),
      SNDRV_CTL_IOCTL_ELEM_UNLOCK = _IOW('U', 0x15, struct snd_ctl_elem_id),
      SNDRV_CTL_IOCTL_SUBSCRIBE_EVENTS = _IOWR('U', 0x16, int),
      SNDRV_CTL_IOCTL_ELEM_ADD = _IOWR('U', 0x17, struct snd_ctl_elem_info),
      SNDRV_CTL_IOCTL_ELEM_REPLACE = _IOWR('U', 0x18, struct snd_ctl_elem_info),
      SNDRV_CTL_IOCTL_ELEM_REMOVE = _IOWR('U', 0x19, struct snd_ctl_elem_id),
      SNDRV_CTL_IOCTL_TLV_READ = _IOWR('U', 0x1a, struct snd_ctl_tlv),
      SNDRV_CTL_IOCTL_TLV_WRITE = _IOWR('U', 0x1b, struct snd_ctl_tlv),
      SNDRV_CTL_IOCTL_TLV_COMMAND = _IOWR('U', 0x1c, struct snd_ctl_tlv),
      SNDRV_CTL_IOCTL_HWDEP_NEXT_DEVICE = _IOWR('U', 0x20, int),
      SNDRV_CTL_IOCTL_HWDEP_INFO = _IOR('U', 0x21, struct snd_hwdep_info),
      SNDRV_CTL_IOCTL_PCM_NEXT_DEVICE = _IOR('U', 0x30, int),
      SNDRV_CTL_IOCTL_PCM_INFO = _IOWR('U', 0x31, struct snd_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 snd_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 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

/*
 *
 */

struct snd_xferv {
      const struct iovec *vector;
      unsigned long count;
};

enum {
      SNDRV_IOCTL_READV = _IOW('K', 0x00, struct snd_xferv),
      SNDRV_IOCTL_WRITEV = _IOW('K', 0x01, struct snd_xferv),
};

#endif /* __SOUND_ASOUND_H */

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