/* $OpenBSD: ossaudio.c,v 1.3 2001/05/24 04:21:03 aaron Exp $ */ /* $NetBSD: ossaudio.c,v 1.5 1998/03/23 00:39:18 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 could be the same file. */ #include #include #include #include #include #include #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: AUDIO_INITINFO(&tmpinfo); 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; } (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.play.buffer_size / tmpinfo.blocksize; idat = (tmpinfo.play.buffer_size / idat) & -4; AUDIO_INITINFO(&tmpinfo); tmpinfo.blocksize = idat; retval = ioctl(fd, AUDIO_SETINFO, &tmpinfo); if (retval < 0) return retval; INTARG = tmpinfo.play.buffer_size / 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) & 0x7fff; 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>1; idat++, u >>= 1) ; idat |= (tmpinfo.hiwat & 0x7fff) << 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: retval = ioctl(fd, AUDIO_GETINFO, &tmpinfo); if (retval < 0) return retval; setblocksize(fd, &tmpinfo); bufinfo.fragsize = tmpinfo.blocksize; bufinfo.fragments = tmpinfo.hiwat - (tmpinfo.play.seek + tmpinfo.blocksize - 1)/tmpinfo.blocksize; bufinfo.fragstotal = tmpinfo.hiwat; bufinfo.bytes = tmpinfo.hiwat * tmpinfo.blocksize - tmpinfo.play.seek; *(struct audio_buf_info *)argp = bufinfo; break; 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 = tmpinfo.hiwat - (tmpinfo.record.seek + tmpinfo.blocksize - 1)/tmpinfo.blocksize; bufinfo.fragstotal = tmpinfo.hiwat; bufinfo.bytes = tmpinfo.hiwat * tmpinfo.blocksize - tmpinfo.record.seek; *(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<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<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); } }