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Initial version of a user level emulation of the OSS audio API. 

Useful for compiling Linux audio programs.
This commit is contained in:
augustss 1997-10-16 17:30:57 +00:00
parent 4aaf52ce2a
commit afab22e3de
5 changed files with 990 additions and 0 deletions
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# $NetBSD: Makefile,v 1.1 1997/10/16 17:30:57 augustss Exp $
LIB= ossaudio
MAN= ossaudio.3
SRCS= ossaudio.c
CFLAGS+= -I${.CURDIR}
INCS= soundcard.h
INCSDIR=/usr/include/sys
.include <bsd.lib.mk>

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.\" $NetBSD: ossaudio.3,v 1.1 1997/10/16 17:30:59 augustss Exp $
.\"
.\" Copyright (c) 1997 The NetBSD Foundation, Inc.
.\" All rights reserved.
.\"
.\" This file was contributed to The NetBSD Foundation by Luke Mewburn.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\" notice, this list of conditions and the following disclaimer.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\" notice, this list of conditions and the following disclaimer in the
.\" documentation and/or other materials provided with the distribution.
.\" 3. All advertising materials mentioning features or use of this software
.\" must display the following acknowledgement:
.\" This product includes software developed by the NetBSD
.\" Foundation, Inc. and its contributors.
.\" 4. Neither the name of The NetBSD Foundation nor the names of its
.\" contributors may be used to endorse or promote products derived
.\" from this software without specific prior written permission.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
.\" POSSIBILITY OF SUCH DAMAGE.
.\"
.Dd October 16, 1997
.Dt OSSAUDIO 3
.Os NetBSD
.Sh NAME
.Nm ossaudio
.Nd OSS audio emulation
.Sh SYNOPSIS
.Fd #include <soundcard.h>
.Sh DESCRIPTION
The
.Nm
library provides an emulation of the OSS (Linux) audio
interface.
.Pp
Use the native interface for new programs and the emulation
library only for porting programs.
.Sh SEE ALSO
.Xr audio 4

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/* $NetBSD: ossaudio.c,v 1.1 1997/10/16 17:31:01 augustss Exp $ */
/*
* Copyright (c) 1997 The NetBSD Foundation, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/*
* This is an OSS (Linux) sound API emulator.
* It provides the essentials of the API.
*/
/* XXX This file is essentially the same as sys/compat/ossaudio.c.
* With some preprocessor magic it coule be the same file.
*/
#include <string.h>
#include <sys/types.h>
#include <sys/ioctl.h>
#include <sys/audioio.h>
#include <sys/stat.h>
#include <errno.h>
#include "soundcard.h"
#undef ioctl
#define GET_DEV(com) ((com) & 0xff)
#define TO_OSSVOL(x) ((x) * 100 / 255)
#define FROM_OSSVOL(x) ((x) * 255 / 100)
static struct audiodevinfo *getdevinfo(int);
static void setblocksize(int, struct audio_info *);
static int audio_ioctl(int, unsigned long, void *);
static int mixer_ioctl(int, unsigned long, void *);
#define INTARG (*(int*)argp)
int
_oss_ioctl(int fd, unsigned long com, void *argp)
{
if (IOCGROUP(com) == 'P')
return audio_ioctl(fd, com, argp);
else if (IOCGROUP(com) == 'M')
return mixer_ioctl(fd, com, argp);
else
return ioctl(fd, com, argp);
}
static int
audio_ioctl(int fd, unsigned long com, void *argp)
{
struct audio_info tmpinfo;
struct audio_offset tmpoffs;
struct audio_buf_info bufinfo;
struct count_info cntinfo;
struct audio_encoding tmpenc;
u_int u;
int idat, idata;
int retval;
switch (com) {
case SNDCTL_DSP_RESET:
retval = ioctl(fd, AUDIO_FLUSH, 0);
if (retval < 0)
return retval;
break;
case SNDCTL_DSP_SYNC:
case SNDCTL_DSP_POST:
retval = ioctl(fd, AUDIO_DRAIN, 0);
if (retval < 0)
return retval;
break;
case SNDCTL_DSP_SPEED:
AUDIO_INITINFO(&tmpinfo);
tmpinfo.play.sample_rate =
tmpinfo.record.sample_rate = INTARG;
(void) ioctl(fd, AUDIO_SETINFO, &tmpinfo);
/* fall into ... */
case SOUND_PCM_READ_RATE:
retval = ioctl(fd, AUDIO_GETINFO, &tmpinfo);
if (retval < 0)
return retval;
INTARG = tmpinfo.play.sample_rate;
break;
case SNDCTL_DSP_STEREO:
AUDIO_INITINFO(&tmpinfo);
tmpinfo.play.channels =
tmpinfo.record.channels = INTARG ? 2 : 1;
(void) ioctl(fd, AUDIO_SETINFO, &tmpinfo);
retval = ioctl(fd, AUDIO_GETINFO, &tmpinfo);
if (retval < 0)
return retval;
INTARG = tmpinfo.play.channels - 1;
break;
case SNDCTL_DSP_GETBLKSIZE:
retval = ioctl(fd, AUDIO_GETINFO, &tmpinfo);
if (retval < 0)
return retval;
setblocksize(fd, &tmpinfo);
INTARG = tmpinfo.blocksize;
break;
case SNDCTL_DSP_SETFMT:
switch (INTARG) {
case AFMT_MU_LAW:
tmpinfo.play.precision =
tmpinfo.record.precision = 8;
tmpinfo.play.encoding =
tmpinfo.record.encoding = AUDIO_ENCODING_ULAW;
break;
case AFMT_A_LAW:
tmpinfo.play.precision =
tmpinfo.record.precision = 8;
tmpinfo.play.encoding =
tmpinfo.record.encoding = AUDIO_ENCODING_ALAW;
break;
case AFMT_U8:
tmpinfo.play.precision =
tmpinfo.record.precision = 8;
tmpinfo.play.encoding =
tmpinfo.record.encoding = AUDIO_ENCODING_ULINEAR;
break;
case AFMT_S8:
tmpinfo.play.precision =
tmpinfo.record.precision = 8;
tmpinfo.play.encoding =
tmpinfo.record.encoding = AUDIO_ENCODING_SLINEAR;
break;
case AFMT_S16_LE:
tmpinfo.play.precision =
tmpinfo.record.precision = 16;
tmpinfo.play.encoding =
tmpinfo.record.encoding = AUDIO_ENCODING_SLINEAR_LE;
break;
case AFMT_S16_BE:
tmpinfo.play.precision =
tmpinfo.record.precision = 16;
tmpinfo.play.encoding =
tmpinfo.record.encoding = AUDIO_ENCODING_SLINEAR_BE;
break;
case AFMT_U16_LE:
tmpinfo.play.precision =
tmpinfo.record.precision = 16;
tmpinfo.play.encoding =
tmpinfo.record.encoding = AUDIO_ENCODING_ULINEAR_LE;
break;
case AFMT_U16_BE:
tmpinfo.play.precision =
tmpinfo.record.precision = 16;
tmpinfo.play.encoding =
tmpinfo.record.encoding = AUDIO_ENCODING_ULINEAR_BE;
break;
default:
return EINVAL;
}
AUDIO_INITINFO(&tmpinfo);
(void) ioctl(fd, AUDIO_SETINFO, &tmpinfo);
/* fall into ... */
case SOUND_PCM_READ_BITS:
retval = ioctl(fd, AUDIO_GETINFO, &tmpinfo);
if (retval < 0)
return retval;
switch (tmpinfo.play.encoding) {
case AUDIO_ENCODING_ULAW:
idat = AFMT_MU_LAW;
break;
case AUDIO_ENCODING_ALAW:
idat = AFMT_A_LAW;
break;
case AUDIO_ENCODING_SLINEAR_LE:
if (tmpinfo.play.precision == 16)
idat = AFMT_S16_LE;
else
idat = AFMT_S8;
break;
case AUDIO_ENCODING_SLINEAR_BE:
if (tmpinfo.play.precision == 16)
idat = AFMT_S16_BE;
else
idat = AFMT_S8;
break;
case AUDIO_ENCODING_ULINEAR_LE:
if (tmpinfo.play.precision == 16)
idat = AFMT_U16_LE;
else
idat = AFMT_U8;
break;
case AUDIO_ENCODING_ULINEAR_BE:
if (tmpinfo.play.precision == 16)
idat = AFMT_U16_BE;
else
idat = AFMT_U8;
break;
case AUDIO_ENCODING_ADPCM:
idat = AFMT_IMA_ADPCM;
break;
}
INTARG = idat;
break;
case SNDCTL_DSP_CHANNELS:
AUDIO_INITINFO(&tmpinfo);
tmpinfo.play.channels =
tmpinfo.record.channels = INTARG;
(void) ioctl(fd, AUDIO_SETINFO, &tmpinfo);
/* fall into ... */
case SOUND_PCM_READ_CHANNELS:
retval = ioctl(fd, AUDIO_GETINFO, &tmpinfo);
if (retval < 0)
return retval;
INTARG = tmpinfo.play.channels;
break;
case SOUND_PCM_WRITE_FILTER:
case SOUND_PCM_READ_FILTER:
errno = EINVAL;
return -1; /* XXX unimplemented */
case SNDCTL_DSP_SUBDIVIDE:
retval = ioctl(fd, AUDIO_GETINFO, &tmpinfo);
if (retval < 0)
return retval;
setblocksize(fd, &tmpinfo);
idat = INTARG;
if (idat == 0)
idat = tmpinfo.buffersize / tmpinfo.blocksize;
idat = (tmpinfo.buffersize / idat) & -4;
AUDIO_INITINFO(&tmpinfo);
tmpinfo.blocksize = idat;
retval = ioctl(fd, AUDIO_SETINFO, &tmpinfo);
if (retval < 0)
return retval;
INTARG = tmpinfo.buffersize / tmpinfo.blocksize;
break;
case SNDCTL_DSP_SETFRAGMENT:
AUDIO_INITINFO(&tmpinfo);
idat = INTARG;
if ((idat & 0xffff) < 4 || (idat & 0xffff) > 17)
return EINVAL;
tmpinfo.blocksize = 1 << (idat & 0xffff);
tmpinfo.hiwat = (idat >> 16) & 0xffff;
if (tmpinfo.hiwat == 0) /* 0 means set to max */
tmpinfo.hiwat = 65536;
(void) ioctl(fd, AUDIO_SETINFO, &tmpinfo);
retval = ioctl(fd, AUDIO_GETINFO, &tmpinfo);
if (retval < 0)
return retval;
u = tmpinfo.blocksize;
for(idat = 0; u; idat++, u >>= 1)
;
idat |= (tmpinfo.hiwat & 0xffff) << 16;
INTARG = idat;
break;
case SNDCTL_DSP_GETFMTS:
for(idat = 0, tmpenc.index = 0;
ioctl(fd, AUDIO_GETENC, &tmpenc) == 0;
tmpenc.index++) {
if (tmpenc.flags & AUDIO_ENCODINGFLAG_EMULATED)
continue; /* Don't report emulated modes */
switch(tmpenc.encoding) {
case AUDIO_ENCODING_ULAW:
idat |= AFMT_MU_LAW;
break;
case AUDIO_ENCODING_ALAW:
idat |= AFMT_A_LAW;
break;
case AUDIO_ENCODING_SLINEAR:
idat |= AFMT_S8;
break;
case AUDIO_ENCODING_SLINEAR_LE:
if (tmpenc.precision == 16)
idat |= AFMT_S16_LE;
else
idat |= AFMT_S8;
break;
case AUDIO_ENCODING_SLINEAR_BE:
if (tmpenc.precision == 16)
idat |= AFMT_S16_BE;
else
idat |= AFMT_S8;
break;
case AUDIO_ENCODING_ULINEAR:
idat |= AFMT_U8;
break;
case AUDIO_ENCODING_ULINEAR_LE:
if (tmpenc.precision == 16)
idat |= AFMT_U16_LE;
else
idat |= AFMT_U8;
break;
case AUDIO_ENCODING_ULINEAR_BE:
if (tmpenc.precision == 16)
idat |= AFMT_U16_BE;
else
idat |= AFMT_U8;
break;
case AUDIO_ENCODING_ADPCM:
idat |= AFMT_IMA_ADPCM;
break;
default:
break;
}
}
INTARG = idat;
break;
case SNDCTL_DSP_GETOSPACE:
case SNDCTL_DSP_GETISPACE:
retval = ioctl(fd, AUDIO_GETINFO, (caddr_t)&tmpinfo);
if (retval < 0)
return retval;
setblocksize(fd, &tmpinfo);
bufinfo.fragsize = tmpinfo.blocksize;
bufinfo.fragments = /* XXX */
bufinfo.fragstotal = tmpinfo.buffersize / bufinfo.fragsize;
bufinfo.bytes = tmpinfo.buffersize;
*(struct audio_buf_info *)argp = bufinfo;
break;
case SNDCTL_DSP_NONBLOCK:
idat = 1;
retval = ioctl(fd, FIONBIO, &idat);
if (retval < 0)
return retval;
break;
case SNDCTL_DSP_GETCAPS:
retval = ioctl(fd, AUDIO_GETPROPS, (caddr_t)&idata);
if (retval < 0)
return retval;
idat = DSP_CAP_TRIGGER; /* pretend we have trigger */
if (idata & AUDIO_PROP_FULLDUPLEX)
idat |= DSP_CAP_DUPLEX;
if (idata & AUDIO_PROP_MMAP)
idat |= DSP_CAP_MMAP;
INTARG = idat;
break;
#if 0
case SNDCTL_DSP_GETTRIGGER:
retval = ioctl(fd, AUDIO_GETINFO, (caddr_t)&tmpinfo);
if (retval < 0)
return retval;
idat = (tmpinfo.play.pause ? 0 : PCM_ENABLE_OUTPUT) |
(tmpinfo.record.pause ? 0 : PCM_ENABLE_INPUT);
retval = copyout(&idat, SCARG(uap, data), sizeof idat);
if (retval < 0)
return retval;
break;
case SNDCTL_DSP_SETTRIGGER:
AUDIO_INITINFO(&tmpinfo);
retval = copyin(SCARG(uap, data), &idat, sizeof idat);
if (retval < 0)
return retval;
tmpinfo.play.pause = (idat & PCM_ENABLE_OUTPUT) == 0;
tmpinfo.record.pause = (idat & PCM_ENABLE_INPUT) == 0;
(void) ioctl(fd, AUDIO_SETINFO, (caddr_t)&tmpinfo);
retval = copyout(&idat, SCARG(uap, data), sizeof idat);
if (retval < 0)
return retval;
break;
#else
case SNDCTL_DSP_GETTRIGGER:
case SNDCTL_DSP_SETTRIGGER:
/* XXX Do nothing for now. */
INTARG = PCM_ENABLE_OUTPUT;
break;
#endif
case SNDCTL_DSP_GETIPTR:
retval = ioctl(fd, AUDIO_GETIOFFS, &tmpoffs);
if (retval < 0)
return retval;
cntinfo.bytes = tmpoffs.samples;
cntinfo.blocks = tmpoffs.deltablks;
cntinfo.ptr = tmpoffs.offset;
*(struct count_info *)argp = cntinfo;
break;
case SNDCTL_DSP_GETOPTR:
retval = ioctl(fd, AUDIO_GETOOFFS, &tmpoffs);
if (retval < 0)
return retval;
cntinfo.bytes = tmpoffs.samples;
cntinfo.blocks = tmpoffs.deltablks;
cntinfo.ptr = tmpoffs.offset;
*(struct count_info *)argp = cntinfo;
break;
case SNDCTL_DSP_MAPINBUF:
case SNDCTL_DSP_MAPOUTBUF:
case SNDCTL_DSP_SETSYNCRO:
case SNDCTL_DSP_SETDUPLEX:
case SNDCTL_DSP_PROFILE:
errno = EINVAL;
return -1; /* XXX unimplemented */
default:
errno = EINVAL;
return -1;
}
return 0;
}
/* If the NetBSD mixer device should have more than 32 devices
* some will not be available to Linux */
#define NETBSD_MAXDEVS 32
struct audiodevinfo {
int done;
dev_t dev;
int16_t devmap[SOUND_MIXER_NRDEVICES],
rdevmap[NETBSD_MAXDEVS];
u_long devmask, recmask, stereomask;
u_long caps, source;
};
/*
* Collect the audio device information to allow faster
* emulation of the Linux mixer ioctls. Cache the information
* to eliminate the overhead of repeating all the ioctls needed
* to collect the information.
*/
static struct audiodevinfo *
getdevinfo(int fd)
{
mixer_devinfo_t mi;
int i;
static struct {
char *name;
int code;
} *dp, devs[] = {
{ AudioNmicrophone, SOUND_MIXER_MIC },
{ AudioNline, SOUND_MIXER_LINE },
{ AudioNcd, SOUND_MIXER_CD },
{ AudioNdac, SOUND_MIXER_PCM },
{ AudioNrecord, SOUND_MIXER_IMIX },
{ AudioNmaster, SOUND_MIXER_VOLUME },
{ AudioNtreble, SOUND_MIXER_TREBLE },
{ AudioNbass, SOUND_MIXER_BASS },
{ AudioNspeaker, SOUND_MIXER_SPEAKER },
/* { AudioNheadphone, ?? },*/
{ AudioNoutput, SOUND_MIXER_OGAIN },
{ AudioNinput, SOUND_MIXER_IGAIN },
/* { AudioNmaster, SOUND_MIXER_SPEAKER },*/
/* { AudioNstereo, ?? },*/
/* { AudioNmono, ?? },*/
{ AudioNfmsynth, SOUND_MIXER_SYNTH },
/* { AudioNwave, SOUND_MIXER_PCM },*/
{ AudioNmidi, SOUND_MIXER_SYNTH },
/* { AudioNmixerout, ?? },*/
{ 0, -1 }
};
static struct audiodevinfo devcache = { 0 };
struct audiodevinfo *di = &devcache;
struct stat sb;
/* Figure out what device it is so we can check if the
* cached data is valid.
*/
if (fstat(fd, &sb) < 0)
return 0;
if (di->done && di->dev == sb.st_dev)
return di;
di->done = 1;
di->dev = sb.st_dev;
di->devmask = 0;
di->recmask = 0;
di->stereomask = 0;
di->source = -1;
di->caps = 0;
for(i = 0; i < SOUND_MIXER_NRDEVICES; i++)
di->devmap[i] = -1;
for(i = 0; i < NETBSD_MAXDEVS; i++)
di->rdevmap[i] = -1;
for(i = 0; i < NETBSD_MAXDEVS; i++) {
mi.index = i;
if (ioctl(fd, AUDIO_MIXER_DEVINFO, &mi) < 0)
break;
switch(mi.type) {
case AUDIO_MIXER_VALUE:
for(dp = devs; dp->name; dp++)
if (strcmp(dp->name, mi.label.name) == 0)
break;
if (dp->code >= 0) {
di->devmap[dp->code] = i;
di->rdevmap[i] = dp->code;
di->devmask |= 1 << dp->code;
if (mi.un.v.num_channels == 2)
di->stereomask |= 1 << dp->code;
}
break;
case AUDIO_MIXER_ENUM:
if (strcmp(mi.label.name, AudioNsource) == 0) {
int j;
di->source = i;
for(j = 0; j < mi.un.e.num_mem; j++)
di->recmask |= 1 << di->rdevmap[mi.un.e.member[j].ord];
di->caps = SOUND_CAP_EXCL_INPUT;
}
break;
case AUDIO_MIXER_SET:
if (strcmp(mi.label.name, AudioNsource) == 0) {
int j;
di->source = i;
for(j = 0; j < mi.un.s.num_mem; j++) {
int k, mask = mi.un.s.member[j].mask;
if (mask) {
for(k = 0; !(mask & 1); mask >>= 1, k++)
;
di->recmask |= 1 << di->rdevmap[k];
}
}
}
break;
}
}
return di;
}
int
mixer_ioctl(int fd, unsigned long com, void *argp)
{
struct audiodevinfo *di;
mixer_ctrl_t mc;
int idat;
int i;
int retval;
int l, r, n;
di = getdevinfo(fd);
if (di == 0)
return -1;
switch (com) {
case SOUND_MIXER_READ_RECSRC:
if (di->source == -1)
return EINVAL;
mc.dev = di->source;
if (di->caps & SOUND_CAP_EXCL_INPUT) {
mc.type = AUDIO_MIXER_ENUM;
retval = ioctl(fd, AUDIO_MIXER_READ, &mc);
if (retval < 0)
return retval;
idat = 1 << di->rdevmap[mc.un.ord];
} else {
int k;
unsigned int mask;
mc.type = AUDIO_MIXER_SET;
retval = ioctl(fd, AUDIO_MIXER_READ, &mc);
if (retval < 0)
return retval;
idat = 0;
for(mask = mc.un.mask, k = 0; mask; mask >>= 1, k++)
if (mask & 1)
idat |= 1 << di->rdevmap[k];
}
break;
case SOUND_MIXER_READ_DEVMASK:
idat = di->devmask;
break;
case SOUND_MIXER_READ_RECMASK:
idat = di->recmask;
break;
case SOUND_MIXER_READ_STEREODEVS:
idat = di->stereomask;
break;
case SOUND_MIXER_READ_CAPS:
idat = di->caps;
break;
case SOUND_MIXER_WRITE_RECSRC:
case SOUND_MIXER_WRITE_R_RECSRC:
if (di->source == -1)
return EINVAL;
mc.dev = di->source;
idat = INTARG;
if (di->caps & SOUND_CAP_EXCL_INPUT) {
mc.type = AUDIO_MIXER_ENUM;
for(i = 0; i < SOUND_MIXER_NRDEVICES; i++)
if (idat & (1 << i))
break;
if (i >= SOUND_MIXER_NRDEVICES ||
di->devmap[i] == -1)
return EINVAL;
mc.un.ord = di->devmap[i];
} else {
mc.type = AUDIO_MIXER_SET;
mc.un.mask = 0;
for(i = 0; i < SOUND_MIXER_NRDEVICES; i++) {
if (idat & (1 << i)) {
if (di->devmap[i] == -1)
return EINVAL;
mc.un.mask |= 1 << di->devmap[i];
}
}
}
return ioctl(fd, AUDIO_MIXER_WRITE, &mc);
default:
if (MIXER_READ(SOUND_MIXER_FIRST) <= com &&
com < MIXER_READ(SOUND_MIXER_NRDEVICES)) {
n = GET_DEV(com);
if (di->devmap[n] == -1)
return EINVAL;
mc.dev = di->devmap[n];
mc.type = AUDIO_MIXER_VALUE;
doread:
mc.un.value.num_channels = di->stereomask & (1<<n) ? 2 : 1;
retval = ioctl(fd, AUDIO_MIXER_READ, &mc);
if (retval < 0)
return retval;
if (mc.type != AUDIO_MIXER_VALUE)
return EINVAL;
if (mc.un.value.num_channels != 2) {
l = r = mc.un.value.level[AUDIO_MIXER_LEVEL_MONO];
} else {
l = mc.un.value.level[AUDIO_MIXER_LEVEL_LEFT];
r = mc.un.value.level[AUDIO_MIXER_LEVEL_RIGHT];
}
idat = TO_OSSVOL(l) | (TO_OSSVOL(r) << 8);
break;
} else if ((MIXER_WRITE_R(SOUND_MIXER_FIRST) <= com &&
com < MIXER_WRITE_R(SOUND_MIXER_NRDEVICES)) ||
(MIXER_WRITE(SOUND_MIXER_FIRST) <= com &&
com < MIXER_WRITE(SOUND_MIXER_NRDEVICES))) {
n = GET_DEV(com);
if (di->devmap[n] == -1)
return EINVAL;
idat = INTARG;
l = FROM_OSSVOL( idat & 0xff);
r = FROM_OSSVOL((idat >> 8) & 0xff);
mc.dev = di->devmap[n];
mc.type = AUDIO_MIXER_VALUE;
if (di->stereomask & (1<<n)) {
mc.un.value.num_channels = 2;
mc.un.value.level[AUDIO_MIXER_LEVEL_LEFT] = l;
mc.un.value.level[AUDIO_MIXER_LEVEL_RIGHT] = r;
} else {
mc.un.value.num_channels = 1;
mc.un.value.level[AUDIO_MIXER_LEVEL_MONO] = (l+r)/2;
}
retval = ioctl(fd, AUDIO_MIXER_WRITE, &mc);
if (retval < 0)
return retval;
if (MIXER_WRITE(SOUND_MIXER_FIRST) <= com &&
com < MIXER_WRITE(SOUND_MIXER_NRDEVICES))
return 0;
goto doread;
} else {
errno = EINVAL;
return -1;
}
}
INTARG = idat;
return 0;
}
/*
* Check that the blocksize is a power of 2 as OSS wants.
* If not, set it to be.
*/
static void
setblocksize(int fd, struct audio_info *info)
{
struct audio_info set;
int s;
if (info->blocksize & (info->blocksize-1)) {
for(s = 32; s < info->blocksize; s <<= 1)
;
AUDIO_INITINFO(&set);
set.blocksize = s;
ioctl(fd, AUDIO_SETINFO, &set);
ioctl(fd, AUDIO_GETINFO, info);
}
}

2
lib/libossaudio/shlib_version Normal file
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@ -0,0 +1,2 @@
major=0
minor=0

223
lib/libossaudio/soundcard.h Normal file
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/* $NetBSD: soundcard.h,v 1.1 1997/10/16 17:31:04 augustss Exp $ */
/*
* Copyright (c) 1997 The NetBSD Foundation, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/*
* WARNING! WARNING!
* This is an OSS (Linux) audio emulator.
* Use the Native NetBSD API for developing new code, and this
* only for compiling Linux programs.
*/
#ifndef _soundcard_h_
#define _soundcard_h_
#define SOUND_VERSION 0x030000
#define SNDCTL_DSP_RESET _IO ('P', 0)
#define SNDCTL_DSP_SYNC _IO ('P', 1)
#define SNDCTL_DSP_SPEED _IOWR('P', 2, int)
#define SOUND_PCM_READ_RATE _IOR ('P', 2, int)
#define SNDCTL_DSP_STEREO _IOWR('P', 3, int)
#define SNDCTL_DSP_GETBLKSIZE _IOWR('P', 4, int)
#define SNDCTL_DSP_SETFMT _IOWR('P', 5, int)
#define SOUND_PCM_READ_BITS _IOR ('P', 5, int)
#define SNDCTL_DSP_CHANNELS _IOWR('P', 6, int)
#define SOUND_PCM_READ_CHANNELS _IOR ('P', 6, int)
#define SOUND_PCM_WRITE_FILTER _IOWR('P', 7, int)
#define SOUND_PCM_READ_FILTER _IOR ('P', 7, int)
#define SNDCTL_DSP_POST _IO ('P', 8)
#define SNDCTL_DSP_SUBDIVIDE _IOWR('P', 9, int)
#define SNDCTL_DSP_SETFRAGMENT _IOWR('P', 10, int)
#define SNDCTL_DSP_GETFMTS _IOR ('P', 11, int)
#define SNDCTL_DSP_GETOSPACE _IOR ('P',12, struct audio_buf_info)
#define SNDCTL_DSP_GETISPACE _IOR ('P',13, struct audio_buf_info)
#define SNDCTL_DSP_NONBLOCK _IO ('P',14)
#define SNDCTL_DSP_GETCAPS _IOR ('P',15, int)
# define DSP_CAP_REVISION 0x000000ff
# define DSP_CAP_DUPLEX 0x00000100
# define DSP_CAP_REALTIME 0x00000200
# define DSP_CAP_BATCH 0x00000400
# define DSP_CAP_COPROC 0x00000800
# define DSP_CAP_TRIGGER 0x00001000
# define DSP_CAP_MMAP 0x00002000
#define SNDCTL_DSP_GETTRIGGER _IOR ('P', 16, int)
#define SNDCTL_DSP_SETTRIGGER _IOW ('P', 16, int)
# define PCM_ENABLE_INPUT 0x00000001
# define PCM_ENABLE_OUTPUT 0x00000002
#define SNDCTL_DSP_GETIPTR _IOR ('P', 17, struct count_info)
#define SNDCTL_DSP_GETOPTR _IOR ('P', 18, struct count_info)
#define SNDCTL_DSP_MAPINBUF _IOR ('P', 19, struct buffmem_desc)
#define SNDCTL_DSP_MAPOUTBUF _IOR ('P', 20, struct buffmem_desc)
#define SNDCTL_DSP_SETSYNCRO _IO ('P', 21)
#define SNDCTL_DSP_SETDUPLEX _IO ('P', 22)
#define SNDCTL_DSP_PROFILE _IOW ('P', 23, int)
#define APF_NORMAL 0
#define APF_NETWORK 1
#define APF_CPUINTENS 2
#define AFMT_QUERY 0x00000000
#define AFMT_MU_LAW 0x00000001
#define AFMT_A_LAW 0x00000002
#define AFMT_IMA_ADPCM 0x00000004
#define AFMT_U8 0x00000008
#define AFMT_S16_LE 0x00000010
#define AFMT_S16_BE 0x00000020
#define AFMT_S8 0x00000040
#define AFMT_U16_LE 0x00000080
#define AFMT_U16_BE 0x00000100
#define AFMT_MPEG 0x00000200
/* Mixer defines */
#define SOUND_MIXER_FIRST 0
#define SOUND_MIXER_NRDEVICES 17
#define SOUND_MIXER_VOLUME 0
#define SOUND_MIXER_BASS 1
#define SOUND_MIXER_TREBLE 2
#define SOUND_MIXER_SYNTH 3
#define SOUND_MIXER_PCM 4
#define SOUND_MIXER_SPEAKER 5
#define SOUND_MIXER_LINE 6
#define SOUND_MIXER_MIC 7
#define SOUND_MIXER_CD 8
#define SOUND_MIXER_IMIX 9
#define SOUND_MIXER_ALTPCM 10
#define SOUND_MIXER_RECLEV 11
#define SOUND_MIXER_IGAIN 12
#define SOUND_MIXER_OGAIN 13
#define SOUND_MIXER_LINE1 14
#define SOUND_MIXER_LINE2 15
#define SOUND_MIXER_LINE3 16
#define SOUND_MIXER_RECSRC 0xff
#define SOUND_MIXER_DEVMASK 0xfe
#define SOUND_MIXER_RECMASK 0xfd
#define SOUND_MIXER_CAPS 0xfc
#define SOUND_CAP_EXCL_INPUT 1
#define SOUND_MIXER_STEREODEVS 0xfb
#define MIXER_READ(dev) _IOR('M', dev, int)
#define SOUND_MIXER_READ_RECSRC MIXER_READ(SOUND_MIXER_RECSRC)
#define SOUND_MIXER_READ_DEVMASK MIXER_READ(SOUND_MIXER_DEVMASK)
#define SOUND_MIXER_READ_RECMASK MIXER_READ(SOUND_MIXER_RECMASK)
#define SOUND_MIXER_READ_STEREODEVS MIXER_READ(SOUND_MIXER_STEREODEVS)
#define SOUND_MIXER_READ_CAPS MIXER_READ(SOUND_MIXER_CAPS)
#define SOUND_MIXER_READ_VOLUME MIXER_READ(SOUND_MIXER_VOLUME)
#define SOUND_MIXER_READ_BASS MIXER_READ(SOUND_MIXER_BASS)
#define SOUND_MIXER_READ_TREBLE MIXER_READ(SOUND_MIXER_TREBLE)
#define SOUND_MIXER_READ_SYNTH MIXER_READ(SOUND_MIXER_SYNTH)
#define SOUND_MIXER_READ_PCM MIXER_READ(SOUND_MIXER_PCM)
#define SOUND_MIXER_READ_SPEAKER MIXER_READ(SOUND_MIXER_SPEAKER)
#define SOUND_MIXER_READ_LINE MIXER_READ(SOUND_MIXER_LINE)
#define SOUND_MIXER_READ_MIC MIXER_READ(SOUND_MIXER_MIC)
#define SOUND_MIXER_READ_CD MIXER_READ(SOUND_MIXER_CD)
#define SOUND_MIXER_READ_IMIX MIXER_READ(SOUND_MIXER_IMIX)
#define SOUND_MIXER_READ_ALTPCM MIXER_READ(SOUND_MIXER_ALTPCM)
#define SOUND_MIXER_READ_RECLEV MIXER_READ(SOUND_MIXER_RECLEV)
#define SOUND_MIXER_READ_IGAIN MIXER_READ(SOUND_MIXER_IGAIN)
#define SOUND_MIXER_READ_OGAIN MIXER_READ(SOUND_MIXER_OGAIN)
#define SOUND_MIXER_READ_LINE1 MIXER_READ(SOUND_MIXER_LINE1)
#define SOUND_MIXER_READ_LINE2 MIXER_READ(SOUND_MIXER_LINE2)
#define SOUND_MIXER_READ_LINE3 MIXER_READ(SOUND_MIXER_LINE3)
#define MIXER_WRITE(dev) _IOW ('M', dev, int)
#define MIXER_WRITE_R(dev) _IOWR('M', dev, int)
#define SOUND_MIXER_WRITE_RECSRC MIXER_WRITE(SOUND_MIXER_RECSRC)
#define SOUND_MIXER_WRITE_R_RECSRC MIXER_WRITE_R(SOUND_MIXER_RECSRC)
#define SOUND_MIXER_WRITE_VOLUME MIXER_WRITE(SOUND_MIXER_VOLUME)
#define SOUND_MIXER_WRITE_BASS MIXER_WRITE(SOUND_MIXER_BASS)
#define SOUND_MIXER_WRITE_TREBLE MIXER_WRITE(SOUND_MIXER_TREBLE)
#define SOUND_MIXER_WRITE_SYNTH MIXER_WRITE(SOUND_MIXER_SYNTH)
#define SOUND_MIXER_WRITE_PCM MIXER_WRITE(SOUND_MIXER_PCM)
#define SOUND_MIXER_WRITE_SPEAKER MIXER_WRITE(SOUND_MIXER_SPEAKER)
#define SOUND_MIXER_WRITE_LINE MIXER_WRITE(SOUND_MIXER_LINE)
#define SOUND_MIXER_WRITE_MIC MIXER_WRITE(SOUND_MIXER_MIC)
#define SOUND_MIXER_WRITE_CD MIXER_WRITE(SOUND_MIXER_CD)
#define SOUND_MIXER_WRITE_IMIX MIXER_WRITE(SOUND_MIXER_IMIX)
#define SOUND_MIXER_WRITE_ALTPCM MIXER_WRITE(SOUND_MIXER_ALTPCM)
#define SOUND_MIXER_WRITE_RECLEV MIXER_WRITE(SOUND_MIXER_RECLEV)
#define SOUND_MIXER_WRITE_IGAIN MIXER_WRITE(SOUND_MIXER_IGAIN)
#define SOUND_MIXER_WRITE_OGAIN MIXER_WRITE(SOUND_MIXER_OGAIN)
#define SOUND_MIXER_WRITE_LINE1 MIXER_WRITE(SOUND_MIXER_LINE1)
#define SOUND_MIXER_WRITE_LINE2 MIXER_WRITE(SOUND_MIXER_LINE2)
#define SOUND_MIXER_WRITE_LINE3 MIXER_WRITE(SOUND_MIXER_LINE3)
#define SOUND_MASK_VOLUME (1 << SOUND_MIXER_VOLUME)
#define SOUND_MASK_BASS (1 << SOUND_MIXER_BASS)
#define SOUND_MASK_TREBLE (1 << SOUND_MIXER_TREBLE)
#define SOUND_MASK_SYNTH (1 << SOUND_MIXER_SYNTH)
#define SOUND_MASK_PCM (1 << SOUND_MIXER_PCM)
#define SOUND_MASK_SPEAKER (1 << SOUND_MIXER_SPEAKER)
#define SOUND_MASK_LINE (1 << SOUND_MIXER_LINE)
#define SOUND_MASK_MIC (1 << SOUND_MIXER_MIC)
#define SOUND_MASK_CD (1 << SOUND_MIXER_CD)
#define SOUND_MASK_IMIX (1 << SOUND_MIXER_IMIX)
#define SOUND_MASK_ALTPCM (1 << SOUND_MIXER_ALTPCM)
#define SOUND_MASK_RECLEV (1 << SOUND_MIXER_RECLEV)
#define SOUND_MASK_IGAIN (1 << SOUND_MIXER_IGAIN)
#define SOUND_MASK_OGAIN (1 << SOUND_MIXER_OGAIN)
#define SOUND_MASK_LINE1 (1 << SOUND_MIXER_LINE1)
#define SOUND_MASK_LINE2 (1 << SOUND_MIXER_LINE2)
#define SOUND_MASK_LINE3 (1 << SOUND_MIXER_LINE3)
#define OSS_GETVERSION _IOR ('M', 118, int)
typedef struct audio_buf_info {
int fragments;
int fragstotal;
int fragsize;
int bytes;
} audio_buf_info;
typedef struct count_info {
int bytes;
int blocks;
int ptr;
} count_info;
typedef struct buffmem_desc {
unsigned int *buffer;
int size;
} buffmem_desc;
#define ioctl(fd, com, argp) _oss_ioctl(fd, com, argp)
int _oss_ioctl(int fd, unsigned long com, void *argp);
#endif