/**
* Device initialization: check device capability and open for recording.
*
* @param sfreq [in] required sampling frequency.
* @param dummy [in] a dummy data
*
* @return TRUE on success, FALSE on failure.
*/
boolean
adin_mic_standby(int sfreq, void *dummy)
{
long rate;
long prec = AL_SAMPLE_16;
long encd = AL_SAMPFMT_TWOSCOMP;
long chan = AL_MONO;
/* global setup */
rate = sfreq;
if (adin_o2_setup_global((double)rate) == FALSE) { /* failed */
jlog("Error: adin_o2: cannot setup microphone device (global)\n");
return(FALSE);
}
/* local parameter setup */
if ((ac = ALnewconfig()) == 0) {
jlog("Error: adin_o2: cannot config microphone device (local)\n");
return(FALSE);
}
ALsetqueuesize(ac, rate * 2 * 1); /* 2 sec. of mono. */
ALsetwidth(ac, prec);
ALsetchannels(ac, chan);
ALsetsampfmt(ac, encd);
jlog("Stat: adin_o2: local microphone port successfully initialized\n");
return(TRUE);
}
static int setaudio(struct xmp_options *o)
{
int bsize = 32 * 1024;
ALconfig config;
long pvbuffer[2];
char *token, **parm;
int i;
parm_init();
chkparm1("buffer", bsize = strtoul(token, NULL, 0));
parm_end();
if ((config = ALnewconfig()) == 0)
return XMP_ERR_DINIT;
/*
* Set sampling rate
*/
pvbuffer[0] = AL_OUTPUT_RATE;
#if 0 /* DOESN'T WORK */
for (i = 0; srate[i]; i++) {
if (srate[i] <= o->freq)
pvbuffer[1] = o->freq = srate[i];
}
#endif /* DOESN'T WORK */
/*
* This was flawed as far as I can tell - it just progressively lowered
* the sample rate to the lowest possible!
*
* o->freq = 44100
*
* i = 0 / if (48000 <= 44100)
* i = 1 / if (44100 <= 44100)
* then pvbuffer[1] = o->freq = 44100
* i = 2 / if (32000 <= 44100)
* then pvbuffer[1] = o->freq = 32000
* i = 3 / if (22050 <= 32000)
* then pvbuffer[1] = o->freq = 22050
* etc...
*
* Below is my attempt to write a new one. It picks the next highest
* rate available up to the maximum. This seems a lot more reasonable.
*
* - 19990706 bdowning
*/
for (i = 0; srate[i]; i++) ; /* find the end of the array */
while (i-- > 0) {
if (srate[i] >= o->freq) {
pvbuffer[1] = o->freq = srate[i];
break;
}
}
if (i == 0)
pvbuffer[1] = o->freq = srate[0]; /* 48 kHz. Wow! */
if (ALsetparams(AL_DEFAULT_DEVICE, pvbuffer, 2) < 0)
return XMP_ERR_DINIT;
/*
* Set sample format to signed integer
*/
if (ALsetsampfmt(config, AL_SAMPFMT_TWOSCOMP) < 0)
return XMP_ERR_DINIT;
/*
* Set sample width; 24 bit samples are not currently supported by xmp
*/
if (o->resol > 8) {
if (ALsetwidth(config, AL_SAMPLE_16) < 0) {
if (ALsetwidth(config, AL_SAMPLE_8) < 0)
return XMP_ERR_DINIT;
o->resol = 8;
} else
al_sample_16 = 1;
} else {
if (ALsetwidth(config, AL_SAMPLE_8) < 0) {
if (ALsetwidth(config, AL_SAMPLE_16) < 0)
return XMP_ERR_DINIT;
o->resol = 16;
} else
al_sample_16 = 0;
}
/*
* Set number of channels; 4 channel output is not currently supported
*/
if (o->outfmt & XMP_FMT_MONO) {
if (ALsetchannels(config, AL_MONO) < 0) {
if (ALsetchannels(config, AL_STEREO) < 0)
return XMP_ERR_DINIT;
o->outfmt &= ~XMP_FMT_MONO;
}
} else {
if (ALsetchannels(config, AL_STEREO) < 0) {
if (ALsetchannels(config, AL_MONO) < 0)
return XMP_ERR_DINIT;
o->outfmt |= XMP_FMT_MONO;
}
}
/*
* Set buffer size
*/
if (ALsetqueuesize(config, bsize) < 0)
return XMP_ERR_DINIT;
/*
* Open the audio port
*/
if ((audio_port = ALopenport("xmp", "w", config)) == 0)
return XMP_ERR_DINIT;
return 0;
}
void *Audio_Irix::open (AudioConfig& cfg, const char *)
{
// Copy input parameters. May later be replaced with driver defaults.
_settings = cfg;
_config = ALnewconfig();
// Set sample format
ALsetsampfmt(_config, AL_SAMPFMT_TWOSCOMP);
// stereo or mono mode
_settings.channels = cfg.channels >= 2 ? 2 : 1;
if (_settings.channels == 2)
ALsetchannels(_config, AL_STEREO);
else
ALsetchannels(_config, AL_MONO);
// 16 or 8 bit sample
_settings.precision = cfg.precision >= 16 ? 16 : 8;
if (_settings.precision == 16)
ALsetwidth(_config, AL_SAMPLE_16);
else
ALsetwidth(_config, AL_SAMPLE_8);
// Frequency
long chpars[] = {AL_OUTPUT_RATE, 0};
if (cfg.frequency > 48000)
chpars[1] = AL_RATE_48000;
else if (cfg.frequency > 44100)
chpars[1] = AL_RATE_44100;
else if (cfg.frequency > 32000)
chpars[1] = AL_RATE_32000;
else if (cfg.frequency > 22050)
chpars[1] = AL_RATE_22050;
else if (cfg.frequency > 16000)
chpars[1] = AL_RATE_16000;
else
chpars[1] = AL_RATE_11025;
ALsetparams(AL_DEFAULT_DEVICE, chpars, 2);
ALgetparams(AL_DEFAULT_DEVICE, chpars, 2);
_settings.frequency = (uint_least32_t) chpars[1];
// Allocate sound buffers and set audio queue
ALsetqueuesize(_config, chpars[1]);
// open audio device
_audio = ALopenport("SIDPLAY2 sound", "w", _config);
if (_audio == NULL)
{
perror("AUDIO:");
_errorString = "ERROR: Could not open audio device.\n See standard error output.";
ALfreeconfig(_config);
return 0;
}
// Setup internal Config
_settings.encoding = AUDIO_SIGNED_PCM;
_settings.bufSize = (uint_least32_t) chpars[1];
// Update the users settings
getConfig (cfg);
// Allocate memory same size as buffer
#ifdef HAVE_EXCEPTIONS
_sampleBuffer = new(std::nothrow) int_least8_t[chpars[1]];
#else
_sampleBuffer = new int_least8_t[chpars[1]];
#endif
_errorString = "OK";
return (void *) _sampleBuffer;
}
int
sgi_audio_open(audio_desc_t ad, audio_format* ifmt, audio_format *ofmt)
{
ALconfig c;
long cmd[8];
if (audio_fd != -1) {
sgi_audio_close(ad);
}
if (ifmt->encoding != DEV_S16) return FALSE;
if ((c = ALnewconfig()) == NULL) {
fprintf(stderr, "ALnewconfig error\n");
exit(1);
}
switch(ifmt->channels) {
case 1:
ALsetchannels(c, AL_MONO); break;
case 2:
ALsetchannels(c, AL_STEREO); break;
default:
sgi_audio_close(ad);
}
ALsetwidth(c, AL_SAMPLE_16);
ALsetqueuesize(c, QSIZE);
ALsetsampfmt(c, AL_SAMPFMT_TWOSCOMP);
if ((wp = ALopenport("RAT write", "w", c)) == NULL) {
fprintf(stderr, "ALopenport (write) error\n");
sgi_audio_close(ad);
return FALSE;
}
if ((rp = ALopenport("RAT read", "r", c)) == NULL) {
fprintf(stderr, "ALopenport (read) error\n");
sgi_audio_close(ad);
return FALSE;
}
cmd[0] = AL_OUTPUT_RATE;
cmd[1] = ofmt->sample_rate;
cmd[2] = AL_INPUT_RATE;
cmd[3] = ifmt->sample_rate;
cmd[4] = AL_MONITOR_CTL;
cmd[5] = AL_MONITOR_OFF;
/*cmd[6] = AL_INPUT_SOURCE;*/
/*cmd[7] = AL_INPUT_MIC;*/
if (ALsetparams(AL_DEFAULT_DEVICE, cmd, 6L/*was 8L*/) == -1) {
fprintf(stderr, "audio_open/ALsetparams error\n");
sgi_audio_close(ad);
}
/* Get the file descriptor to use in select */
audio_fd = ALgetfd(rp);
if (ALsetfillpoint(rp, ifmt->bytes_per_block) < 0) {
debug_msg("ALsetfillpoint failed (%d samples)\n", ifmt->bytes_per_block);
}
bytes_per_block = ifmt->bytes_per_block;
/* We probably should free the config here... */
return TRUE;
}
