From: ratchov Date: Wed, 31 Aug 2016 07:22:43 +0000 (+0000) Subject: Delete unused ioctls and associated macros. Move macros that are still X-Git-Url: http://artulab.com/gitweb/?a=commitdiff_plain;h=9215aa3dfad387bca877a805534df6dcfe8722eb;p=openbsd Delete unused ioctls and associated macros. Move macros that are still used internally by low-level drivers from sys/audioio.h to dev/audio_if.h instead of deleting them. --- diff --git a/share/man/man4/audio.4 b/share/man/man4/audio.4 index bac422e322d..ede52ded4d5 100644 --- a/share/man/man4/audio.4 +++ b/share/man/man4/audio.4 @@ -1,4 +1,4 @@ -.\" $OpenBSD: audio.4,v 1.71 2016/06/18 07:59:30 ratchov Exp $ +.\" $OpenBSD: audio.4,v 1.72 2016/08/31 07:22:43 ratchov Exp $ .\" $NetBSD: audio.4,v 1.20 1998/05/28 17:27:15 augustss Exp $ .\" .\" Copyright (c) 1996 The NetBSD Foundation, Inc. @@ -28,7 +28,7 @@ .\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE .\" POSSIBILITY OF SUCH DAMAGE. .\" -.Dd $Mdocdate: June 18 2016 $ +.Dd $Mdocdate: August 31 2016 $ .Dt AUDIO 4 .Os .Sh NAME @@ -127,16 +127,6 @@ The following commands are supported on the sample devices: .Pp .Bl -tag -width Ds -compact -.It Dv AUDIO_RERROR Fa "int *" -.It Dv AUDIO_PERROR Fa "int *" -Obsolete. -These commands fetch the count of dropped input or output samples into -the -.Vt int * -argument, respectively. -There is no information regarding when in the sample stream -they were dropped. -.Pp .It Dv AUDIO_GETDEV Fa "audio_device_t *" This command fetches the current hardware device information into the .Vt audio_device_t * @@ -149,192 +139,6 @@ typedef struct audio_device { } audio_device_t; .Ed .Pp -.It Dv AUDIO_GETFD Fa "int *" -This command returns 1 if in full-duplex mode, else 0. -.Pp -.It Dv AUDIO_GETENC Fa "audio_encoding_t *" -This command is used iteratively to fetch sample encoding -.Va name Ns s -and -.Va format_id Ns s -into the input/output -.Vt audio_encoding_t * -argument. -.Bd -literal -typedef struct audio_encoding { - int index; /* input: nth encoding */ - char name[MAX_AUDIO_DEV_LEN]; /* name of encoding */ - int encoding; /* value for encoding parameter */ - int precision; /* value for precision parameter */ - int bps; /* value for bps parameter */ - int msb; /* value for msb parameter */ -} audio_encoding_t; -.Ed -.Pp -To query -all the supported encodings, start with an index field of 0 and -continue with successive encodings (1, 2, ...) until the command returns -an error. -.Pp -.It Dv AUDIO_SETFD Fa "int *" -Does nothing, left for compatibility; argument must point to a non-zero -integer if the device is opened in read-write mode. -.Pp -.It Dv AUDIO_GETPROPS Fa "int *" -This command gets a bit set of hardware properties. -If the hardware -has a certain property, the corresponding bit is set, otherwise it is not. -The properties can have the following values: -.Pp -.Bl -tag -width AUDIO_PROP_INDEPENDENT -compact -.It Dv AUDIO_PROP_FULLDUPLEX -The device admits full-duplex operation. -.It Dv AUDIO_PROP_INDEPENDENT -The device can set playing and recording channel counts independently. -.El -.Pp -.It Dv AUDIO_GETIOFFS Fa "audio_offset_t *" -.It Dv AUDIO_GETOOFFS Fa "audio_offset_t *" -Obsolete. -These commands fetch the number of bytes played or recorded. -The information is returned in the -.Vt audio_offset -structure. -.Bd -literal -typedef struct audio_offset { - u_int samples; /* Total number of bytes transferred */ -} audio_offset_t; -.Ed -.Pp -.It Dv AUDIO_GETINFO Fa "audio_info_t *" -.It Dv AUDIO_SETINFO Fa "audio_info_t *" -Get or set audio information as encoded in the -.Vt audio_info -structure. -.Bd -literal -typedef struct audio_info { - struct audio_prinfo play; /* info for play (output) side */ - struct audio_prinfo record; /* info for record (input) side */ - u_int hiwat; /* blocks count in play buffer */ - u_int mode; /* current device mode */ -#define AUMODE_PLAY 0x01 -#define AUMODE_RECORD 0x02 -} audio_info_t; -.Ed -.Pp -When setting the current state with -.Dv AUDIO_SETINFO , -the -.Vt audio_info -structure should first be initialized with -.Pp -.Dl "AUDIO_INITINFO(&info);" -.Pp -and then the particular values to be changed should be set. -This allows the audio driver to only set those things that you wish -to change and eliminates the need to query the device with -.Dv AUDIO_GETINFO -first. -.Pp -The -.Va mode -field is read-only and set to -.Dv AUMODE_PLAY , -.Dv AUMODE_RECORD , -or a bitwise OR combination of the three. -Only full-duplex audio devices support -simultaneous record and playback. -.Pp -.Va hiwat -contains the number of blocks in the kernel play buffer. -Writes to the audio devices will queue blocks until the play buffer -is full, at which point any more write calls will block -until space for at least one byte is available. -.Bd -literal -struct audio_prinfo { - u_int sample_rate; /* sample rate in bit/s */ - u_int channels; /* number of channels, usually 1 or 2 */ - u_int precision; /* number of bits/sample */ - u_int bps; /* number of bytes/sample */ - u_int msb; /* data alignment */ - u_int encoding; /* data encoding (AUDIO_ENCODING_* below) */ - u_int block_size; /* size a block */ - /* Current state of device: */ - u_char pause; /* non-zero if paused, zero to resume */ - u_char active; /* non-zero if I/O is currently active */ -}; -.Ed -.Pp -The -.Nm -driver requires identical playback and -recording sample rates, sample encodings, and block durations. -.Pp -The -.Va encoding -parameter can have the following values: -.Pp -.Bl -tag -width AUDIO_ENCODING_SLINEAR_BE -compact -.It Dv AUDIO_ENCODING_ULAW -mu-law encoding, 8 bits/sample -.It Dv AUDIO_ENCODING_ALAW -A-law encoding, 8 bits/sample -.It Dv AUDIO_ENCODING_SLINEAR_LE -two's complement signed linear encoding with little endian byte order -.It Dv AUDIO_ENCODING_SLINEAR_BE -two's complement signed linear encoding with big endian byte order -.It Dv AUDIO_ENCODING_ULINEAR_LE -unsigned linear encoding with little endian byte order -.It Dv AUDIO_ENCODING_ULINEAR_BE -unsigned linear encoding with big endian byte order -.El -.Pp -The -.Va precision -parameter describes the number of bits of audio data per sample. -The -.Va bps -parameter describes the number of bytes of audio data per sample. -The -.Va msb -parameter describes the alignment of the data in the sample. -It is only meaningful when -.Va precision -/ NBBY < -.Va bps . -A value of 1 means the data is aligned to the most significant bit. -.Pp -.Va block_size -is the block size in bytes, which determines the frequency at which -blocking -.Xr read 2 , -.Xr write 2 , -or -.Xr poll 2 , -wake up. -The generic -.Nm audio -driver layer and the hardware driver have the -opportunity to adjust this block size to get it within -implementation-required limits. -Normally the -.Va block_size -is recalculated -when other parameters changes. -.Pp -It is recommended to set -.Va block_size -at the same time as, or after, all other parameters have been set. -.Pp -.Va pause -returns the current pause/unpause state for recording or playback. -For -.Dv AUDIO_SETINFO , -if the pause value is specified it will either pause -or unpause the particular direction. -In full-duplex the pause values for both directions must -be equal. -.Pp .It Dv AUDIO_SETPAR Fa "struct audio_swpar *" .It Dv AUDIO_GETPAR Fa "struct audio_swpar *" Set or get audio parameters as encoded in the diff --git a/sys/dev/audio.c b/sys/dev/audio.c index 167a45e3714..a6590c069d4 100644 --- a/sys/dev/audio.c +++ b/sys/dev/audio.c @@ -1,4 +1,4 @@ -/* $OpenBSD: audio.c,v 1.150 2016/06/21 06:38:28 ratchov Exp $ */ +/* $OpenBSD: audio.c,v 1.151 2016/08/31 07:22:43 ratchov Exp $ */ /* * Copyright (c) 2015 Alexandre Ratchov * @@ -857,180 +857,6 @@ audio_setpar(struct audio_softc *sc) return 0; } -int -audio_setinfo(struct audio_softc *sc, struct audio_info *ai) -{ - struct audio_prinfo *r = &ai->record, *p = &ai->play; - int error; - int set; - - /* - * stop the device if requested to stop - */ - if (sc->mode != 0) { - if (sc->mode & AUMODE_PLAY) { - if (p->pause != (unsigned char)~0) - sc->pause = p->pause; - } - if (sc->mode & AUMODE_RECORD) { - if (r->pause != (unsigned char)~0) - sc->pause = r->pause; - } - if (sc->pause) { - if (sc->active) - audio_stop(sc); - } - } - - /* - * copy parameters into the softc structure - */ - set = 0; - if (ai->play.encoding != ~0) { - sc->sw_enc = ai->play.encoding; - set = 1; - } - if (ai->play.precision != ~0) { - sc->bits = ai->play.precision; - set = 1; - } - if (ai->play.bps != ~0) { - sc->bps = ai->play.bps; - set = 1; - } - if (ai->play.msb != ~0) { - sc->msb = ai->play.msb; - set = 1; - } - if (ai->play.sample_rate != ~0) { - sc->rate = ai->play.sample_rate; - set = 1; - } - if (ai->play.channels != ~0) { - sc->pchan = ai->play.channels; - set = 1; - } - if (ai->play.block_size != ~0) { - sc->round = ai->play.block_size / - (sc->bps * sc->pchan); - set = 1; - } - if (ai->hiwat != ~0) { - sc->nblks = ai->hiwat; - set = 1; - } - if (ai->record.encoding != ~0) { - sc->sw_enc = ai->record.encoding; - set = 1; - } - if (ai->record.precision != ~0) { - sc->bits = ai->record.precision; - set = 1; - } - if (ai->record.bps != ~0) { - sc->bps = ai->record.bps; - set = 1; - } - if (ai->record.msb != ~0) { - sc->msb = ai->record.msb; - set = 1; - } - if (ai->record.sample_rate != ~0) { - sc->rate = ai->record.sample_rate; - set = 1; - } - if (ai->record.channels != ~0) { - sc->rchan = ai->record.channels; - set = 1; - } - if (ai->record.block_size != ~0) { - sc->round = ai->record.block_size / - (sc->bps * sc->rchan); - set = 1; - } - - DPRINTF("%s: setinfo: set = %d, mode = %d, pause = %d\n", - DEVNAME(sc), set, sc->mode, sc->pause); - - /* - * if the device not opened, we're done, don't touch the hardware - */ - if (sc->mode == 0) - return 0; - - /* - * change parameters and recalculate buffer sizes - */ - if (set) { - if (sc->active) { - DPRINTF("%s: can't change params during dma\n", - DEVNAME(sc)); - return EBUSY; - } - error = audio_setpar(sc); - if (error) - return error; - audio_clear(sc); - if ((sc->mode & AUMODE_PLAY) && sc->ops->init_output) { - error = sc->ops->init_output(sc->arg, - sc->play.data, sc->play.len); - if (error) - return error; - } - if ((sc->mode & AUMODE_RECORD) && sc->ops->init_input) { - error = sc->ops->init_input(sc->arg, - sc->rec.data, sc->rec.len); - if (error) - return error; - } - } - - /* - * if unpaused, start - */ - if (!sc->pause && !sc->active) { - error = audio_start(sc); - if (error) - return error; - } - return 0; -} - -int -audio_getinfo(struct audio_softc *sc, struct audio_info *ai) -{ - ai->play.sample_rate = ai->record.sample_rate = sc->rate; - ai->play.encoding = ai->record.encoding = sc->sw_enc; - ai->play.precision = ai->record.precision = sc->bits; - ai->play.bps = ai->record.bps = sc->bps; - ai->play.msb = ai->record.msb = sc->msb; - ai->play.channels = sc->pchan; - ai->record.channels = sc->rchan; - - /* - * XXX: this is used only to display counters through audioctl - * and the pos counters are more useful - */ - mtx_enter(&audio_lock); - ai->play.samples = sc->play.pos - sc->play.xrun; - ai->record.samples = sc->rec.pos - sc->rec.xrun; - mtx_leave(&audio_lock); - - ai->play.pause = ai->record.pause = sc->pause; - ai->play.active = ai->record.active = sc->active; - - ai->play.buffer_size = sc->play.datalen; - ai->record.buffer_size = sc->rec.datalen; - - ai->play.block_size = sc->round * sc->bps * sc->pchan; - ai->record.block_size = sc->round * sc->bps * sc->rchan; - - ai->hiwat = sc->nblks; - ai->lowat = sc->nblks; - ai->mode = sc->mode; - return 0; -} - int audio_ioc_start(struct audio_softc *sc) { @@ -1699,9 +1525,8 @@ audio_getdev(struct audio_softc *sc, struct audio_device *adev) int audio_ioctl(struct audio_softc *sc, unsigned long cmd, void *addr) { - struct audio_offset *ao; struct audio_pos *ap; - int error = 0, fd; + int error = 0; /* block if quiesced */ while (sc->quiesce) @@ -1711,28 +1536,6 @@ audio_ioctl(struct audio_softc *sc, unsigned long cmd, void *addr) case FIONBIO: /* All handled in the upper FS layer. */ break; - case AUDIO_PERROR: - mtx_enter(&audio_lock); - *(int *)addr = sc->play.xrun / (sc->pchan * sc->bps); - mtx_leave(&audio_lock); - break; - case AUDIO_RERROR: - mtx_enter(&audio_lock); - *(int *)addr = sc->rec.xrun / (sc->rchan * sc->bps); - mtx_leave(&audio_lock); - break; - case AUDIO_GETOOFFS: - mtx_enter(&audio_lock); - ao = (struct audio_offset *)addr; - ao->samples = sc->play.pos; - mtx_leave(&audio_lock); - break; - case AUDIO_GETIOFFS: - mtx_enter(&audio_lock); - ao = (struct audio_offset *)addr; - ao->samples = sc->rec.pos; - mtx_leave(&audio_lock); - break; case AUDIO_GETPOS: mtx_enter(&audio_lock); ap = (struct audio_pos *)addr; @@ -1755,32 +1558,9 @@ audio_ioctl(struct audio_softc *sc, unsigned long cmd, void *addr) case AUDIO_GETSTATUS: error = audio_ioc_getstatus(sc, (struct audio_status *)addr); break; - case AUDIO_SETINFO: - error = audio_setinfo(sc, (struct audio_info *)addr); - break; - case AUDIO_GETINFO: - error = audio_getinfo(sc, (struct audio_info *)addr); - break; case AUDIO_GETDEV: error = audio_getdev(sc, (struct audio_device *)addr); break; - case AUDIO_GETENC: - error = sc->ops->query_encoding(sc->arg, - (struct audio_encoding *)addr); - break; - case AUDIO_GETFD: - *(int *)addr = (sc->mode & (AUMODE_PLAY | AUMODE_RECORD)) == - (AUMODE_PLAY | AUMODE_RECORD); - break; - case AUDIO_SETFD: - fd = *(int *)addr; - if ((sc->mode & (AUMODE_PLAY | AUMODE_RECORD)) != - (AUMODE_PLAY | AUMODE_RECORD) || !fd) - return EINVAL; - break; - case AUDIO_GETPROPS: - *(int *)addr = sc->ops->get_props(sc->arg); - break; default: DPRINTF("%s: unknown ioctl 0x%lx\n", DEVNAME(sc), cmd); error = ENOTTY; @@ -1959,10 +1739,6 @@ audioioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, struct proc *p) error = audio_ioctl(sc, cmd, addr); break; case AUDIO_DEV_AUDIOCTL: - if (cmd == AUDIO_SETINFO && sc->mode != 0) { - error = EBUSY; - break; - } if (cmd == AUDIO_SETPAR && sc->mode != 0) { error = EBUSY; break; diff --git a/sys/dev/audio_if.h b/sys/dev/audio_if.h index 788ef0b5eba..35a01d07bf1 100644 --- a/sys/dev/audio_if.h +++ b/sys/dev/audio_if.h @@ -1,4 +1,4 @@ -/* $OpenBSD: audio_if.h,v 1.30 2015/06/25 06:43:46 ratchov Exp $ */ +/* $OpenBSD: audio_if.h,v 1.31 2016/08/31 07:22:43 ratchov Exp $ */ /* $NetBSD: audio_if.h,v 1.24 1998/01/10 14:07:25 tv Exp $ */ /* @@ -40,6 +40,13 @@ #include +/* + * get_props + */ +#define AUDIO_PROP_FULLDUPLEX 0x01 +#define AUDIO_PROP_MMAP 0x02 +#define AUDIO_PROP_INDEPENDENT 0x04 + #define AUDIO_BPS(bits) (bits) <= 8 ? 1 : ((bits) <= 16 ? 2 : 4) /* @@ -60,6 +67,31 @@ struct audio_params { u_int channels; /* mono(1), stereo(2) */ }; +/* + * query_encoding argument + */ +typedef struct audio_encoding { + int index; +#define MAX_AUDIO_DEV_LEN 16 + char name[MAX_AUDIO_DEV_LEN]; +#define AUDIO_ENCODING_NONE 0 /* no encoding assigned */ +#define AUDIO_ENCODING_ULAW 1 /* ITU G.711 mu-law */ +#define AUDIO_ENCODING_ALAW 2 /* ITU G.711 A-law */ +#define AUDIO_ENCODING_ADPCM 5 /* adaptive differential PCM */ +#define AUDIO_ENCODING_SLINEAR_LE 6 +#define AUDIO_ENCODING_SLINEAR_BE 7 +#define AUDIO_ENCODING_ULINEAR_LE 8 +#define AUDIO_ENCODING_ULINEAR_BE 9 +#define AUDIO_ENCODING_SLINEAR 10 +#define AUDIO_ENCODING_ULINEAR 11 + int encoding; + int precision; + int bps; + int msb; + int flags; +#define AUDIO_ENCODINGFLAG_EMULATED 1 /* software emulation mode */ +} audio_encoding_t; + struct audio_hw_if { int (*open)(void *, int); /* open hardware */ void (*close)(void *); /* close hardware */ diff --git a/sys/kern/kern_pledge.c b/sys/kern/kern_pledge.c index 32c26be7df6..207970b1ed4 100644 --- a/sys/kern/kern_pledge.c +++ b/sys/kern/kern_pledge.c @@ -1,4 +1,4 @@ -/* $OpenBSD: kern_pledge.c,v 1.180 2016/07/28 12:12:16 mikeb Exp $ */ +/* $OpenBSD: kern_pledge.c,v 1.181 2016/08/31 07:22:43 ratchov Exp $ */ /* * Copyright (c) 2015 Nicholas Marriott @@ -1177,11 +1177,6 @@ pledge_ioctl(struct proc *p, long com, struct file *fp) case AUDIO_SETPAR: case AUDIO_START: case AUDIO_STOP: - case AUDIO_SETINFO: - case AUDIO_GETINFO: - case AUDIO_GETENC: - case AUDIO_SETFD: - case AUDIO_GETPROPS: if (fp->f_type == DTYPE_VNODE && vp->v_type == VCHR && cdevsw[major(vp->v_rdev)].d_open == audioopen) diff --git a/sys/sys/audioio.h b/sys/sys/audioio.h index e145904a2ec..1d9aee36a1c 100644 --- a/sys/sys/audioio.h +++ b/sys/sys/audioio.h @@ -1,4 +1,4 @@ -/* $OpenBSD: audioio.h,v 1.25 2016/06/18 07:59:30 ratchov Exp $ */ +/* $OpenBSD: audioio.h,v 1.26 2016/08/31 07:22:43 ratchov Exp $ */ /* $NetBSD: audioio.h,v 1.24 1998/08/13 06:28:41 mrg Exp $ */ /* @@ -38,6 +38,9 @@ #ifndef _SYS_AUDIOIO_H_ #define _SYS_AUDIOIO_H_ +#define AUMODE_PLAY 0x01 +#define AUMODE_RECORD 0x02 + #define AUDIO_INITPAR(p) \ (void)memset((void *)(p), 0xff, sizeof(struct audio_swpar)) @@ -68,44 +71,6 @@ struct audio_status { int _spare[5]; }; -/* - * Audio device - */ -struct audio_prinfo { - u_int sample_rate; /* sample rate in bit/s */ - u_int channels; /* number of channels, usually 1 or 2 */ - u_int precision; /* number of bits/sample */ - u_int bps; /* number of bytes/sample */ - u_int msb; /* data alignment */ - u_int encoding; /* data encoding (AUDIO_ENCODING_* below) */ - u_int ispare2[4]; - u_int buffer_size; /* total size audio buffer */ - u_int block_size; /* size a block */ - /* Current state of device: */ - u_int samples; /* number of samples */ - u_int ispare[1]; - u_char pause; /* non-zero if paused, zero to resume */ - u_char cspare2[6]; - u_char active; /* non-zero if I/O is currently active */ -}; -typedef struct audio_prinfo audio_prinfo_t; - -struct audio_info { - struct audio_prinfo play; /* Info for play (output) side */ - struct audio_prinfo record; /* Info for record (input) side */ - u_int ispare[2]; /* H/W read/write block size */ - u_int hiwat; /* output high water mark */ - u_int lowat; /* output low water mark */ - u_char cspare[4]; - u_int mode; /* current device mode */ -#define AUMODE_PLAY 0x01 -#define AUMODE_RECORD 0x02 -}; -typedef struct audio_info audio_info_t; - -#define AUDIO_INITINFO(p) \ - (void)memset((void *)(p), 0xff, sizeof(struct audio_info)) - /* * Parameter for the AUDIO_GETDEV ioctl to determine current * audio devices. @@ -117,11 +82,6 @@ typedef struct audio_device { char config[MAX_AUDIO_DEV_LEN]; } audio_device_t; -typedef struct audio_offset { - u_int samples; /* Total number of bytes transferred */ - u_int unused[2]; -} audio_offset_t; - struct audio_pos { unsigned int play_pos; /* total bytes played */ unsigned int play_xrun; /* bytes of silence inserted */ @@ -129,64 +89,16 @@ struct audio_pos { unsigned int rec_xrun; /* bytes dropped */ }; -/* - * Supported audio encodings - */ -/* Encoding ID's */ -#define AUDIO_ENCODING_NONE 0 /* no encoding assigned */ -#define AUDIO_ENCODING_ULAW 1 /* ITU G.711 mu-law */ -#define AUDIO_ENCODING_ALAW 2 /* ITU G.711 A-law */ -#define AUDIO_ENCODING_ADPCM 5 /* adaptive differential PCM */ -#define AUDIO_ENCODING_SLINEAR_LE 6 -#define AUDIO_ENCODING_SLINEAR_BE 7 -#define AUDIO_ENCODING_ULINEAR_LE 8 -#define AUDIO_ENCODING_ULINEAR_BE 9 -#define AUDIO_ENCODING_SLINEAR 10 -#define AUDIO_ENCODING_ULINEAR 11 - -typedef struct audio_encoding { - int index; - char name[MAX_AUDIO_DEV_LEN]; - int encoding; - int precision; - int bps; - int msb; - int flags; -#define AUDIO_ENCODINGFLAG_EMULATED 1 /* software emulation mode */ -} audio_encoding_t; - -/* - * Balance settings. - */ -#define AUDIO_LEFT_BALANCE 0 /* left channel only */ -#define AUDIO_MID_BALANCE 32 /* equal left/right channel */ -#define AUDIO_RIGHT_BALANCE 64 /* right channel only */ -#define AUDIO_BALANCE_SHIFT 3 - /* * Audio device operations */ -#define AUDIO_GETINFO _IOR('A', 21, struct audio_info) -#define AUDIO_SETINFO _IOWR('A', 22, struct audio_info) -#define AUDIO_DRAIN _IO('A', 23) -#define AUDIO_RERROR _IOR('A', 26, int) #define AUDIO_GETDEV _IOR('A', 27, struct audio_device) -#define AUDIO_GETENC _IOWR('A', 28, struct audio_encoding) -#define AUDIO_GETFD _IOR('A', 29, int) -#define AUDIO_SETFD _IOWR('A', 30, int) -#define AUDIO_PERROR _IOR('A', 31, int) -#define AUDIO_GETIOFFS _IOR('A', 32, struct audio_offset) -#define AUDIO_GETOOFFS _IOR('A', 33, struct audio_offset) -#define AUDIO_GETPROPS _IOR('A', 34, int) #define AUDIO_GETPOS _IOR('A', 35, struct audio_pos) #define AUDIO_GETPAR _IOR('A', 36, struct audio_swpar) #define AUDIO_SETPAR _IOWR('A', 37, struct audio_swpar) #define AUDIO_START _IO('A', 38) #define AUDIO_STOP _IO('A', 39) #define AUDIO_GETSTATUS _IOR('A', 40, struct audio_status) -#define AUDIO_PROP_FULLDUPLEX 0x01 -#define AUDIO_PROP_MMAP 0x02 -#define AUDIO_PROP_INDEPENDENT 0x04 /* * Mixer device