Rudimentry bsd-audio emulator for VAT support using FreeBSD's voxware package.
Voxware hackers should feel free to work on this some more, it's by no means a perfect product. (I have patches for GUS users running 2.x to run their GUS with bidirectional DMA (talk while listening. All other soundboards must use push-to-talk until people learn to build real hardware). Submitted by: amancio hasty & paul traina
This commit is contained in:
Paul Traina
parent
4915b106ed
commit
75a128283a
317
sys/i386/isa/sound/vat_audio.c
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317
sys/i386/isa/sound/vat_audio.c
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@ -0,0 +1,317 @@
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#include "vat_audio.h"
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#if NVAT_AUDIO > 0
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#include "sound_config.h"
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#include "os.h"
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#include "vat_audioio.h"
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#define PAS_AUDIO (SND_DEV_AUDIO | 0x10)
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#define SB_AUDIO (SND_DEV_AUDIO )
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#define MIXER (SND_DEV_CTL)
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struct va_softc {
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dev_t rdev; /* record device */
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dev_t pdev; /* playback device */
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dev_t mixer; /* mixer device */
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struct selinfo wsel; /* write select info */
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struct selinfo rsel; /* read select info */
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int rlevel;
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int plevel;
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int open;
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} va_softc = { PAS_AUDIO, SB_AUDIO, MIXER, {0, 0}, {0, 0}, 0, 0, 0 } ;
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#define DEF_SAMPLE_RATE 8007
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#ifndef AUDIOBLOCKSIZE
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#define AUDIOBLOCKSIZE 160 /* 20ms at 8khz */
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#endif
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static int iblocksize=AUDIOBLOCKSIZE;
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static int oblocksize=1024;
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#define splaudio splclock
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static void
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setpgain(int level)
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{
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register struct va_softc *va = (struct va_softc *)&va_softc;
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int arg;
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level = (level*100/255) & 0x7f;
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arg = (level << 8) | level;
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sndioctl(va->mixer, MIXER_WRITE(SOUND_MIXER_PCM), &arg);
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}
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static void
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setrgain(int level)
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{
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register struct va_softc *va = (struct va_softc *)&va_softc;
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int arg;
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int arg1;
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level = (level*100/255) & 0x7f;
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arg = (level << 8) | level;
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sndioctl(va->mixer, SOUND_MIXER_WRITE_LINE, &arg);
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sndioctl(va->mixer, SOUND_MIXER_WRITE_MIC, &arg);
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sndioctl(va->mixer, SOUND_MIXER_WRITE_CD, &arg);
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}
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static int
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setprate(int rate)
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{
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register struct va_softc *va = (struct va_softc *)&va_softc;
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register int dev;
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dev = va->pdev >> 4;
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return(audio_devs[dev]->ioctl(dev, SOUND_PCM_WRITE_RATE, rate, 1));
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}
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static int
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setrrate(int rate)
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{
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register struct va_softc *va = (struct va_softc *)&va_softc;
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register int dev;
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dev = va->rdev >> 4;
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return(audio_devs[dev]->ioctl(dev, SOUND_PCM_WRITE_RATE, rate, 1));
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}
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static int default_level[SOUND_MIXER_NRDEVICES] = { /* max = 0x64 */
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0x3232, /* Master Volume */
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0x3232, /* Bass */
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0x3232, /* Treble */
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0x0, /* FM */
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0x6464, /* PCM */
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0x0, /* PC Speaker */
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0x6464, /* Ext Line */
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0x6464, /* Mic */
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0x4b4b, /* CD */
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0x0, /* Recording monitor (input mixer) -- avoid feedback */
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0x4b4b, /* SB PCM */
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0x6464, /* Record Level -- to ADC */
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};
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static u_int record_devices = (SOUND_MASK_MIC|SOUND_MASK_LINE|SOUND_MASK_CD);
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int
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vaopen(dev_t dev, int flags)
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{
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register struct va_softc *va = (struct va_softc *)&va_softc;
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int s;
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if(va->open)
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return(EBUSY);
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else
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va->open = 1 ;
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s=sndopen(va->rdev, FREAD);
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if(s) {
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va->open = 0;
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return(s);
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}
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s=sndopen(va->pdev, FWRITE);
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if(s) {
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va->open = 0;
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sndclose(va->rdev, FREAD);
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return(s);
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}
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/* set sample rates */
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setprate(DEF_SAMPLE_RATE);
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setrrate(DEF_SAMPLE_RATE);
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/* set block size for I/O samples */
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sndioctl(va->rdev, SNDCTL_DSP_GETBLKSIZE, &iblocksize);
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sndioctl(va->pdev, SNDCTL_DSP_GETBLKSIZE, &oblocksize);
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/* initialize mixer controls the way we want them */
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sndioctl(va->mixer, SOUND_MIXER_WRITE_RECSRC, &record_devices);
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for(s=0; s< SOUND_MIXER_NRDEVICES; s++)
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sndioctl(va->mixer, MIXER_WRITE(s), &default_level[s]);
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va->rlevel=(default_level[SOUND_MASK_MIC]&0x7f) * 255 / 100;
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va->plevel=(default_level[SOUND_MASK_PCM]&0x7f) * 255 / 100;
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if((flags & FREAD) != 0) { /* start the read process */
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DMAbuf_start_input(va->rdev>>4);
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}
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return(0);
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}
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int
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vaclose(dev_t dev, int flags)
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{
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register struct va_softc *va = (struct va_softc *)&va_softc;
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va->open = 0;
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sndioctl(va->mixer, SNDCTL_DSP_RESET, 0);
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sndclose(va->pdev, FWRITE);
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sndclose(va->rdev, FREAD);
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return(0);
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}
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int
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varead(dev_t dev, struct uio *buf, int ioflag)
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{
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register struct va_softc *va = (struct va_softc *)&va_softc;
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return(sndread(va->rdev, buf, ioflag));
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}
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int
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vawrite(dev_t dev, struct uio *buf, int ioflag)
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{
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register struct va_softc *va = (struct va_softc *)&va_softc;
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return(sndwrite(va->pdev, buf, ioflag));
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}
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void
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audio_get_info(struct va_softc *va, struct audio_info *ai)
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{
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struct audio_prinfo *r, *p;
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int rdev = va->rdev>>4;
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int pdev = va->pdev>>4;
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r = &ai->record;
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p = &ai->play;
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p->sample_rate = audio_devs[pdev]->ioctl(pdev, SOUND_PCM_READ_RATE, 0,1);
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r->sample_rate = audio_devs[rdev]->ioctl(rdev, SOUND_PCM_READ_RATE, 0,1);
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p->channels = audio_devs[pdev]->ioctl(pdev, SOUND_PCM_READ_CHANNELS, 0,1);
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r->channels = audio_devs[rdev]->ioctl(rdev, SOUND_PCM_READ_CHANNELS, 0,1);
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p->precision = audio_devs[pdev]->ioctl(pdev, SOUND_PCM_READ_BITS, 0, 1);
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r->precision = audio_devs[rdev]->ioctl(rdev, SOUND_PCM_READ_BITS, 0, 1);
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p->encoding = r->encoding = AUDIO_ENCODING_ULAW;
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ai->monitor_gain = 0;
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r->gain = va->rlevel;
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p->gain = va->plevel;
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r->port = 1;
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p->port = AUDIO_SPEAKER;
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p->open = r->open = va->open;
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return;
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}
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void
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audio_set_info(struct va_softc *va, struct audio_info *ai)
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{
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struct audio_prinfo *r, *p;
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int rdev = va->rdev>>4;
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int pdev = va->pdev>>4;
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r = &ai->record;
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p = &ai->play;
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/* Only set gains if mode == -1, I think this is a bug in vat. */
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if(ai->mode == ~0) {
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if(p->gain != ~0) {
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va->plevel = p->gain;
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setpgain(va->plevel);
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}
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if(r->gain != ~0) {
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va->rlevel = r->gain;
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setrgain(va->rlevel);
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}
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}
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if(p->sample_rate != ~0)
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p->sample_rate = setprate(p->sample_rate);
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if(r->sample_rate != ~0)
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r->sample_rate = setrrate(r->sample_rate);
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DMAbuf_start_input(rdev);
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}
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int
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vaioctl(dev_t dev, int cmd, caddr_t arg, int mode)
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{
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register struct va_softc *va = (struct va_softc *)&va_softc;
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int s;
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switch(cmd) {
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case FIONBIO:
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break; /* handled above in file i/o routines */
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case AUDIO_GETINFO:
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audio_get_info(va, (struct audio_info *)arg);
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break;
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case AUDIO_SETINFO:
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audio_set_info(va, (struct audio_info *)arg);
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break;
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default:
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printf("vaioctl: cmd=0x%x, '%c', num = %d, len=%d, %s\n",
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cmd, IOCGROUP(cmd), cmd & 0xff, IOCPARM_LEN(cmd),
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cmd&IOC_IN ? "in" : "out");
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s = sndioctl(va->rdev, cmd, arg, mode);
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if(s == 0)
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s = sndioctl(va->pdev, cmd, arg, mode);
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break;
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}
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return(0);
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}
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int
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vaselect(dev_t dev, int rw, struct proc *p)
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{
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register struct va_softc *va = (struct va_softc *)&va_softc;
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int s;
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int r;
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s = splaudio();
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r = 0;
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switch(rw) {
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case FREAD:
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if(DMAbuf_input_ready(va->rdev>>4))
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r = 1;
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else
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selrecord(p, &va->rsel);
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break;
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case FWRITE:
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if(DMAbuf_output_ready(va->pdev>>4))
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r = 1;
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else
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selrecord(p, &va->wsel);
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break;
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}
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splx(s);
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return(r);
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}
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void
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audio_rint()
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{
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register struct va_softc *va = (struct va_softc *)&va_softc;
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register u_char *tp;
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register int cc;
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if(!va->open) return;
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selwakeup(&va->rsel);
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}
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void
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audio_pint()
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{
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register struct va_softc *va = (struct va_softc *)&va_softc;
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register u_char *tp;
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register int cc;
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if(!va->open) return;
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selwakeup(&va->wsel);
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}
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#else
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void
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audio_rint()
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{
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}
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void
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audio_pint()
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{
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}
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#endif /* NVAT_AUDIO */
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111
sys/i386/isa/sound/vat_audioio.h
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111
sys/i386/isa/sound/vat_audioio.h
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@ -0,0 +1,111 @@
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/*
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* Copyright (c) 1991-1993 Regents of the University of California.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the Computer Systems
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* Engineering Group at Lawrence Berkeley Laboratory.
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* 4. Neither the name of the University nor of the Laboratory may be used
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* to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $Header: audioio.h,v 1.3 93/07/18 14:07:07 mccanne Exp $ (LBL)
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*/
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#ifndef _BSD_AUDIOIO_H_
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#define _BSD_AUDIOIO_H_
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/*
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* /dev/audio ioctls. needs comments!
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*/
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#define AUDIO_MIN_GAIN (0)
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#define AUDIO_MAX_GAIN (255)
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#define AUDIO_ENCODING_ULAW (1)
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#define AUDIO_ENCODING_ALAW (2)
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#define AUDIO_ENCODING_LINEAR (3)
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struct audio_prinfo {
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u_int sample_rate;
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u_int channels;
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u_int precision;
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u_int encoding;
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u_int gain;
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u_int port;
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u_long seek; /* BSD extension */
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u_int ispare[3];
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u_int samples;
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u_int eof;
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u_char pause;
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u_char error;
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u_char waiting;
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u_char cspare[3];
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u_char open;
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u_char active;
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};
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struct audio_info {
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struct audio_prinfo play;
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struct audio_prinfo record;
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u_int monitor_gain;
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/* BSD extensions */
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u_int blocksize; /* input blocking threshold */
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u_int hiwat; /* output high water mark */
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u_int lowat; /* output low water mark */
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u_int backlog; /* samples of output backlog to gen. */
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#define AUMODE_PLAY 0
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#define AUMODE_RECORD 1
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u_int mode;
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};
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typedef struct audio_info audio_info_t;
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#define AUDIO_INITINFO(p)\
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(void)memset((void *)(p), 0xff, sizeof(struct audio_info))
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#if (defined(sun) || defined(ibm032)) && !defined(__GNUC__)
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#define AUDIO_GETINFO _IOR(A, 21, struct audio_info)
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#define AUDIO_SETINFO _IOWR(A, 22, struct audio_info)
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#define AUDIO_DRAIN _IO(A, 23)
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#define AUDIO_FLUSH _IO(A, 24)
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#define AUDIO_WSEEK _IOR(A, 25, u_long)
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#define AUDIO_RERROR _IOR(A, 26, int)
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#define AUDIO_GETMAP _IOR(A, 27, struct mapreg)
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#define AUDIO_SETMAP _IOW(A, 28, struct mapreg)
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#else
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#define AUDIO_GETINFO _IOR('A', 21, struct audio_info)
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#define AUDIO_SETINFO _IOWR('A', 22, struct audio_info)
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#define AUDIO_DRAIN _IO('A', 23)
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#define AUDIO_FLUSH _IO('A', 24)
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#define AUDIO_WSEEK _IOR('A', 25, u_long)
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#define AUDIO_RERROR _IOR('A', 26, int)
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#define AUDIO_GETMAP _IOR('A', 27, struct mapreg)
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#define AUDIO_SETMAP _IOW('A', 28, struct mapreg)
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#endif
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#define AUDIO_SPEAKER 1
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#define AUDIO_HEADPHONE 2
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#endif /* _BSD_AUDIOIO_H_ */
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