static int audriv_al_set_width(ALconfig c, int encoding)
{
if(encoding == AENC_G711_ULAW)
return alSetWidth(c, 2);
else
return alSetWidth(c, AENC_SAMPW(encoding));
}
/*
Set the sample width of an audio configuration.
*/
void setwidth (ALconfig config, int sampleWidth)
{
if (sampleWidth <= 8)
{
printf("setting width to 8\n");
alSetWidth(config, AL_SAMPLE_8);
}
else if (sampleWidth <= 16)
{
printf("setting width to 16\n");
alSetWidth(config, AL_SAMPLE_16);
}
else if (sampleWidth <= 24)
{
printf("setting width to 24\n");
alSetWidth(config, AL_SAMPLE_24);
}
}
static int set_format(audio_output_t *ao, ALconfig config)
{
if (alSetSampFmt(config,AL_SAMPFMT_TWOSCOMP) < 0)
error1("set_format : %s",alGetErrorString(oserror()));
if (alSetWidth(config,AL_SAMPLE_16) < 0)
error1("set_format : %s",alGetErrorString(oserror()));
return 0;
}
static int audio_set_format(struct audio_info_struct *ai, ALconfig config)
{
if (alSetSampFmt(config,AL_SAMPFMT_TWOSCOMP) < 0)
fprintf(stderr,"audio_set_format : %s\n",alGetErrorString(oserror()));
if (alSetWidth(config,AL_SAMPLE_16) < 0)
fprintf(stderr,"audio_set_format : %s\n",alGetErrorString(oserror()));
return 0;
}
static int set_format(audio_output_t *ao, ALconfig config)
{
if(ao->format == MPG123_ENC_FLOAT_32)
{
if(alSetSampFmt(config, AL_SAMPFMT_FLOAT) < 0)
{
error1("SetSampFmt: %s", alGetErrorString(oserror()));
return -1;
}
} else
{
if(alSetSampFmt(config, AL_SAMPFMT_TWOSCOMP) < 0)
{
error1("SetSampFmt: %s", alGetErrorString(oserror()));
return -1;
}
if(alSetWidth(config, AL_SAMPLE_16) < 0)
{
error1("SetWidth: %s", alGetErrorString(oserror()));
return -1;
}
}
return 0;
}
static int AL_OpenAudio(_THIS, SDL_AudioSpec *spec)
{
ALconfig audio_config;
#ifdef OLD_IRIX_AUDIO
long audio_param[2];
#else
ALpv audio_param;
#endif
int width;
/* Determine the audio parameters from the AudioSpec */
switch ( spec->format & 0xFF ) {
case 8: { /* Signed 8 bit audio data */
spec->format = AUDIO_S8;
width = AL_SAMPLE_8;
}
break;
case 16: { /* Signed 16 bit audio data */
spec->format = AUDIO_S16MSB;
width = AL_SAMPLE_16;
}
break;
default: {
SDL_SetError("Unsupported audio format");
return(-1);
}
}
/* Update the fragment size as size in bytes */
SDL_CalculateAudioSpec(spec);
/* Set output frequency */
#ifdef OLD_IRIX_AUDIO
audio_param[0] = AL_OUTPUT_RATE;
audio_param[1] = spec->freq;
if( ALsetparams(AL_DEFAULT_DEVICE, audio_param, 2) < 0 ) {
#else
audio_param.param = AL_RATE;
audio_param.value.i = spec->freq;
if( alSetParams(AL_DEFAULT_OUTPUT, &audio_param, 1) < 0 ) {
#endif
SDL_SetError("alSetParams failed");
return(-1);
}
/* Open the audio port with the requested frequency */
audio_port = NULL;
audio_config = alNewConfig();
if ( audio_config &&
(alSetSampFmt(audio_config, AL_SAMPFMT_TWOSCOMP) >= 0) &&
(alSetWidth(audio_config, width) >= 0) &&
(alSetQueueSize(audio_config, spec->samples*2) >= 0) &&
(alSetChannels(audio_config, spec->channels) >= 0) ) {
audio_port = alOpenPort("SDL audio", "w", audio_config);
}
alFreeConfig(audio_config);
if( audio_port == NULL ) {
SDL_SetError("Unable to open audio port");
return(-1);
}
/* Allocate mixing buffer */
mixbuf = (Uint8 *)SDL_AllocAudioMem(spec->size);
if ( mixbuf == NULL ) {
SDL_OutOfMemory();
return(-1);
}
memset(mixbuf, spec->silence, spec->size);
/* We're ready to rock and roll. :-) */
return(0);
}
BOOL
wave_out_set_format(WAVEFORMATEX * pwfx)
{
int channels;
int frameSize, channelCount;
ALpv params;
#if (defined(IRIX_DEBUG))
fprintf(stderr, "wave_out_set_format: init...\n");
#endif
g_swapaudio = False;
if (pwfx->wBitsPerSample == 8)
width = AL_SAMPLE_8;
else if (pwfx->wBitsPerSample == 16)
{
width = AL_SAMPLE_16;
/* Do we need to swap the 16bit values? (Are we BigEndian) */
#if (defined(B_ENDIAN))
g_swapaudio = 1;
#else
g_swapaudio = 0;
#endif
}
/* Limited support to configure an opened audio port in IRIX. The
number of channels is a static setting and can not be changed after
a port is opened. So if the number of channels remains the same, we
can configure other settings; otherwise we have to reopen the audio
port, using same config. */
channels = pwfx->nChannels;
g_snd_rate = pwfx->nSamplesPerSec;
alSetSampFmt(audioconfig, AL_SAMPFMT_TWOSCOMP);
alSetWidth(audioconfig, width);
if (channels != alGetChannels(audioconfig))
{
alClosePort(output_port);
alSetChannels(audioconfig, channels);
output_port = alOpenPort("rdpsnd", "w", audioconfig);
if (output_port == (ALport) 0)
{
fprintf(stderr, "wave_out_set_format: alOpenPort failed: %s\n",
alGetErrorString(oserror()));
return False;
}
}
resource = alGetResource(output_port);
maxFillable = alGetFillable(output_port);
channelCount = alGetChannels(audioconfig);
frameSize = alGetWidth(audioconfig);
if (frameSize == 0 || channelCount == 0)
{
fprintf(stderr, "wave_out_set_format: bad frameSize or channelCount\n");
return False;
}
combinedFrameSize = frameSize * channelCount;
params.param = AL_RATE;
params.value.ll = (long long) g_snd_rate << 32;
if (alSetParams(resource, ¶ms, 1) < 0)
{
fprintf(stderr, "wave_set_format: alSetParams failed: %s\n",
alGetErrorString(oserror()));
return False;
}
if (params.sizeOut < 0)
{
fprintf(stderr, "wave_set_format: invalid rate %d\n", g_snd_rate);
return False;
}
#if (defined(IRIX_DEBUG))
fprintf(stderr, "wave_out_set_format: returning...\n");
#endif
return True;
}
qboolean SNDDMA_Init(void)
{
ALconfig ac = NULL;
ALpv pvbuf[2];
s_loadas8bit = Cvar_Get("s_loadas8bit", "16", CVAR_ARCHIVE);
if ((int)s_loadas8bit->value)
dma.samplebits = 8;
else
dma.samplebits = 16;
if (dma.samplebits != 16) {
Com_Printf("Don't currently support %i-bit data. Forcing 16-bit.\n",
dma.samplebits);
dma.samplebits = 16;
Cvar_SetValue( "s_loadas8bit", false );
}
s_khz = Cvar_Get("s_khz", "0", CVAR_ARCHIVE);
switch ((int)s_khz->value) {
case 48:
dma.speed = AL_RATE_48000;
break;
case 44:
dma.speed = AL_RATE_44100;
break;
case 32:
dma.speed = AL_RATE_32000;
break;
case 22:
dma.speed = AL_RATE_22050;
break;
case 16:
dma.speed = AL_RATE_16000;
break;
case 11:
dma.speed = AL_RATE_11025;
break;
case 8:
dma.speed = AL_RATE_8000;
break;
default:
dma.speed = AL_RATE_22050;
Com_Printf("Don't currently support %i kHz sample rate. Using %i.\n",
(int)s_khz->value, (int)(dma.speed/1000));
}
sndchannels = Cvar_Get("sndchannels", "2", CVAR_ARCHIVE);
dma.channels = (int)sndchannels->value;
if (dma.channels != 2)
Com_Printf("Don't currently support %i sound channels. Try 2.\n",
sndchannels);
/***********************/
ac = alNewConfig();
alSetChannels( ac, AL_STEREO );
alSetSampFmt( ac, AL_SAMPFMT_TWOSCOMP );
alSetQueueSize( ac, QSND_BUFFER_FRAMES );
if (dma.samplebits == 8)
alSetWidth( ac, AL_SAMPLE_8 );
else
alSetWidth( ac, AL_SAMPLE_16 );
sgisnd_aport = alOpenPort( "Quake", "w", ac );
if (!sgisnd_aport)
{
printf( "failed to open audio port!\n" );
}
// set desired sample rate
pvbuf[0].param = AL_MASTER_CLOCK;
pvbuf[0].value.i = AL_CRYSTAL_MCLK_TYPE;
pvbuf[1].param = AL_RATE;
pvbuf[1].value.ll = alIntToFixed( dma.speed );
alSetParams( alGetResource( sgisnd_aport ), pvbuf, 2 );
if (pvbuf[1].sizeOut < 0)
printf( "illegal sample rate %d\n", dma.speed );
sgisnd_frames_per_ns = dma.speed * 1.0e-9;
dma.samples = sizeof(dma_buffer)/(dma.samplebits/8);
dma.submission_chunk = 1;
dma.buffer = (unsigned char *)dma_buffer;
dma.samplepos = 0;
alFreeConfig( ac );
return true;
}
// open & setup audio device
// return: 1=success 0=fail
static int init(int rate, int channels, int format, int flags) {
int smpwidth, smpfmt;
int rv = AL_DEFAULT_OUTPUT;
smpfmt = fmt2sgial(&format, &smpwidth);
mp_msg(MSGT_AO, MSGL_INFO, MSGTR_AO_SGI_InitInfo, rate, (channels > 1) ? "Stereo" : "Mono", af_fmt2str_short(format));
{ /* from /usr/share/src/dmedia/audio/setrate.c */
double frate, realrate;
ALpv x[2];
if(ao_subdevice) {
rv = alGetResourceByName(AL_SYSTEM, ao_subdevice, AL_OUTPUT_DEVICE_TYPE);
if (!rv) {
mp_msg(MSGT_AO, MSGL_ERR, MSGTR_AO_SGI_InvalidDevice);
return 0;
}
}
frate = rate;
x[0].param = AL_RATE;
x[0].value.ll = alDoubleToFixed(rate);
x[1].param = AL_MASTER_CLOCK;
x[1].value.i = AL_CRYSTAL_MCLK_TYPE;
if (alSetParams(rv,x, 2)<0) {
mp_msg(MSGT_AO, MSGL_WARN, MSGTR_AO_SGI_CantSetParms_Samplerate, alGetErrorString(oserror()));
}
if (x[0].sizeOut < 0) {
mp_msg(MSGT_AO, MSGL_WARN, MSGTR_AO_SGI_CantSetAlRate);
}
if (alGetParams(rv,x, 1)<0) {
mp_msg(MSGT_AO, MSGL_WARN, MSGTR_AO_SGI_CantGetParms, alGetErrorString(oserror()));
}
realrate = alFixedToDouble(x[0].value.ll);
if (frate != realrate) {
mp_msg(MSGT_AO, MSGL_INFO, MSGTR_AO_SGI_SampleRateInfo, realrate, frate);
}
sample_rate = (int)realrate;
}
bytes_per_frame = channels * smpwidth;
ao_data.samplerate = sample_rate;
ao_data.channels = channels;
ao_data.format = format;
ao_data.bps = sample_rate * bytes_per_frame;
ao_data.buffersize=131072;
ao_data.outburst = ao_data.buffersize/16;
ao_config = alNewConfig();
if (!ao_config) {
mp_msg(MSGT_AO, MSGL_ERR, MSGTR_AO_SGI_InitConfigError, alGetErrorString(oserror()));
return 0;
}
if(alSetChannels(ao_config, channels) < 0 ||
alSetWidth(ao_config, smpwidth) < 0 ||
alSetSampFmt(ao_config, smpfmt) < 0 ||
alSetQueueSize(ao_config, sample_rate) < 0 ||
alSetDevice(ao_config, rv) < 0) {
mp_msg(MSGT_AO, MSGL_ERR, MSGTR_AO_SGI_InitConfigError, alGetErrorString(oserror()));
return 0;
}
ao_port = alOpenPort("mplayer", "w", ao_config);
if (!ao_port) {
mp_msg(MSGT_AO, MSGL_ERR, MSGTR_AO_SGI_InitOpenAudioFailed, alGetErrorString(oserror()));
return 0;
}
// printf("ao_sgi, init: port %d config %d\n", ao_port, ao_config);
queue_size = alGetQueueSize(ao_config);
return 1;
}
// open & setup audio device
// return: 1=success 0=fail
static int init(int rate, int channels, int format, int flags) {
int smpwidth, smpfmt;
int rv = AL_DEFAULT_OUTPUT;
smpfmt = fmt2sgial(&format, &smpwidth);
mp_tmsg(MSGT_AO, MSGL_INFO, "[AO SGI] init: Samplerate: %iHz Channels: %s Format %s\n", rate, (channels > 1) ? "Stereo" : "Mono", af_fmt2str_short(format));
{ /* from /usr/share/src/dmedia/audio/setrate.c */
double frate, realrate;
ALpv x[2];
if(ao_subdevice) {
rv = alGetResourceByName(AL_SYSTEM, ao_subdevice, AL_OUTPUT_DEVICE_TYPE);
if (!rv) {
mp_tmsg(MSGT_AO, MSGL_ERR, "[AO SGI] play: invalid device.\n");
return 0;
}
}
frate = rate;
x[0].param = AL_RATE;
x[0].value.ll = alDoubleToFixed(rate);
x[1].param = AL_MASTER_CLOCK;
x[1].value.i = AL_CRYSTAL_MCLK_TYPE;
if (alSetParams(rv,x, 2)<0) {
mp_tmsg(MSGT_AO, MSGL_WARN, "[AO SGI] init: setparams failed: %s\nCould not set desired samplerate.\n", alGetErrorString(oserror()));
}
if (x[0].sizeOut < 0) {
mp_tmsg(MSGT_AO, MSGL_WARN, "[AO SGI] init: AL_RATE was not accepted on the given resource.\n");
}
if (alGetParams(rv,x, 1)<0) {
mp_tmsg(MSGT_AO, MSGL_WARN, "[AO SGI] init: getparams failed: %s\n", alGetErrorString(oserror()));
}
realrate = alFixedToDouble(x[0].value.ll);
if (frate != realrate) {
mp_tmsg(MSGT_AO, MSGL_INFO, "[AO SGI] init: samplerate is now %f (desired rate is %f)\n", realrate, frate);
}
sample_rate = (int)realrate;
}
bytes_per_frame = channels * smpwidth;
ao_data.samplerate = sample_rate;
ao_data.channels = channels;
ao_data.format = format;
ao_data.bps = sample_rate * bytes_per_frame;
ao_data.buffersize=131072;
ao_data.outburst = ao_data.buffersize/16;
ao_config = alNewConfig();
if (!ao_config) {
mp_tmsg(MSGT_AO, MSGL_ERR, "[AO SGI] init: %s\n", alGetErrorString(oserror()));
return 0;
}
if(alSetChannels(ao_config, channels) < 0 ||
alSetWidth(ao_config, smpwidth) < 0 ||
alSetSampFmt(ao_config, smpfmt) < 0 ||
alSetQueueSize(ao_config, sample_rate) < 0 ||
alSetDevice(ao_config, rv) < 0) {
mp_tmsg(MSGT_AO, MSGL_ERR, "[AO SGI] init: %s\n", alGetErrorString(oserror()));
return 0;
}
ao_port = alOpenPort("mplayer", "w", ao_config);
if (!ao_port) {
mp_tmsg(MSGT_AO, MSGL_ERR, "[AO SGI] init: Unable to open audio channel: %s\n", alGetErrorString(oserror()));
return 0;
}
// printf("ao_sgi, init: port %d config %d\n", ao_port, ao_config);
queue_size = alGetQueueSize(ao_config);
return 1;
}
static int
IRIXAUDIO_OpenDevice(_THIS, const char *devname, int iscapture)
{
SDL_AudioFormat test_format = SDL_FirstAudioFormat(this->spec.format);
long width = 0;
long fmt = 0;
int valid = 0;
/* !!! FIXME: Handle multiple devices and capture? */
/* Initialize all variables that we clean on shutdown */
this->hidden = (struct SDL_PrivateAudioData *)
SDL_malloc((sizeof *this->hidden));
if (this->hidden == NULL) {
SDL_OutOfMemory();
return 0;
}
SDL_memset(this->hidden, 0, (sizeof *this->hidden));
#ifdef OLD_IRIX_AUDIO
{
long audio_param[2];
audio_param[0] = AL_OUTPUT_RATE;
audio_param[1] = this->spec.freq;
valid = (ALsetparams(AL_DEFAULT_DEVICE, audio_param, 2) < 0);
}
#else
{
ALpv audio_param;
audio_param.param = AL_RATE;
audio_param.value.i = this->spec.freq;
valid = (alSetParams(AL_DEFAULT_OUTPUT, &audio_param, 1) < 0);
}
#endif
while ((!valid) && (test_format)) {
valid = 1;
this->spec.format = test_format;
switch (test_format) {
case AUDIO_S8:
width = AL_SAMPLE_8;
fmt = AL_SAMPFMT_TWOSCOMP;
break;
case AUDIO_S16SYS:
width = AL_SAMPLE_16;
fmt = AL_SAMPFMT_TWOSCOMP;
break;
case AUDIO_F32SYS:
width = 0; /* not used here... */
fmt = AL_SAMPFMT_FLOAT;
break;
/* Docs say there is int24, but not int32.... */
default:
valid = 0;
test_format = SDL_NextAudioFormat();
break;
}
if (valid) {
ALconfig audio_config = alNewConfig();
valid = 0;
if (audio_config) {
if (alSetChannels(audio_config, this->spec.channels) < 0) {
if (this->spec.channels > 2) { /* can't handle > stereo? */
this->spec.channels = 2; /* try again below. */
}
}
if ((alSetSampFmt(audio_config, fmt) >= 0) &&
((!width) || (alSetWidth(audio_config, width) >= 0)) &&
(alSetQueueSize(audio_config, this->spec.samples * 2) >=
0)
&& (alSetChannels(audio_config, this->spec.channels) >=
0)) {
this->hidden->audio_port = alOpenPort("SDL audio", "w",
audio_config);
if (this->hidden->audio_port == NULL) {
/* docs say AL_BAD_CHANNELS happens here, too. */
int err = oserror();
if (err == AL_BAD_CHANNELS) {
this->spec.channels = 2;
alSetChannels(audio_config, this->spec.channels);
this->hidden->audio_port =
alOpenPort("SDL audio", "w", audio_config);
}
}
if (this->hidden->audio_port != NULL) {
valid = 1;
}
}
alFreeConfig(audio_config);
}
}
}
if (!valid) {
IRIXAUDIO_CloseDevice(this);
SDL_SetError("Unsupported audio format");
return 0;
}
/* Update the fragment size as size in bytes */
SDL_CalculateAudioSpec(&this->spec);
/* Allocate mixing buffer */
this->hidden->mixbuf = (Uint8 *) SDL_AllocAudioMem(this->spec.size);
if (this->hidden->mixbuf == NULL) {
IRIXAUDIO_CloseDevice(this);
SDL_OutOfMemory();
return 0;
}
SDL_memset(this->hidden->mixbuf, this->spec.silence, this->spec.size);
/* We're ready to rock and roll. :-) */
return 1;
}
static int open_sgi(audio_output_t *ao)
{
int dev = AL_DEFAULT_OUTPUT;
ALconfig config = alNewConfig();
ALport port = NULL;
/* Test for correct completion */
if (config == 0) {
error1("open_sgi: %s",alGetErrorString(oserror()));
return -1;
}
/* Set port parameters */
if(ao->channels == 2)
alSetChannels(config, AL_STEREO);
else
alSetChannels(config, AL_MONO);
alSetWidth(config, AL_SAMPLE_16);
alSetSampFmt(config,AL_SAMPFMT_TWOSCOMP);
alSetQueueSize(config, 131069);
/* Setup output device to specified module. If there is no module
specified in ao structure, use the default four output */
if ((ao->device) != NULL) {
char *dev_name;
dev_name=malloc((strlen(ao->device) + strlen(analog_output_res_name) + 1) *
sizeof(char));
strcpy(dev_name,ao->device);
strcat(dev_name,analog_output_res_name);
/* Find the asked device resource */
dev=alGetResourceByName(AL_SYSTEM,dev_name,AL_DEVICE_TYPE);
/* Free allocated space */
free(dev_name);
if (!dev) {
error2("Invalid audio resource: %s (%s)",dev_name, alGetErrorString(oserror()));
return -1;
}
}
/* Set the device */
if (alSetDevice(config,dev) < 0)
{
error1("open_sgi: %s",alGetErrorString(oserror()));
return -1;
}
/* Open the audio port */
port = alOpenPort("mpg123-VSC", "w", config);
if(port == NULL) {
error1("Unable to open audio channel: %s", alGetErrorString(oserror()));
return -1;
}
ao->userptr = (void*)port;
set_format(ao, config);
set_channels(ao, config);
set_rate(ao, config);
alFreeConfig(config);
return 1;
}
static int AL_OpenAudio(_THIS, SDL_AudioSpec * spec)
{
Uint16 test_format = SDL_FirstAudioFormat(spec->format);
long width = 0;
long fmt = 0;
int valid = 0;
#ifdef OLD_IRIX_AUDIO
{
long audio_param[2];
audio_param[0] = AL_OUTPUT_RATE;
audio_param[1] = spec->freq;
valid = (ALsetparams(AL_DEFAULT_DEVICE, audio_param, 2) < 0);
}
#else
{
ALpv audio_param;
audio_param.param = AL_RATE;
audio_param.value.i = spec->freq;
valid = (alSetParams(AL_DEFAULT_OUTPUT, &audio_param, 1) < 0);
}
#endif
while ((!valid) && (test_format)) {
valid = 1;
spec->format = test_format;
switch (test_format) {
case AUDIO_S8:
width = AL_SAMPLE_8;
fmt = AL_SAMPFMT_TWOSCOMP;
break;
case AUDIO_S16SYS:
width = AL_SAMPLE_16;
fmt = AL_SAMPFMT_TWOSCOMP;
break;
default:
valid = 0;
test_format = SDL_NextAudioFormat();
break;
}
if (valid) {
ALconfig audio_config = alNewConfig();
valid = 0;
if (audio_config) {
if (alSetChannels(audio_config, spec->channels) < 0) {
if (spec->channels > 2) { /* can't handle > stereo? */
spec->channels = 2; /* try again below. */
}
}
if ((alSetSampFmt(audio_config, fmt) >= 0) &&
((!width) || (alSetWidth(audio_config, width) >= 0)) &&
(alSetQueueSize(audio_config, spec->samples * 2) >= 0) &&
(alSetChannels(audio_config, spec->channels) >= 0)) {
audio_port = alOpenPort("SDL audio", "w", audio_config);
if (audio_port == NULL) {
/* docs say AL_BAD_CHANNELS happens here, too. */
int err = oserror();
if (err == AL_BAD_CHANNELS) {
spec->channels = 2;
alSetChannels(audio_config, spec->channels);
audio_port = alOpenPort("SDL audio", "w",
audio_config);
}
}
if (audio_port != NULL) {
valid = 1;
}
}
alFreeConfig(audio_config);
}
}
}
if (!valid) {
SDL_SetError("Unsupported audio format");
return (-1);
}
/* Update the fragment size as size in bytes */
SDL_CalculateAudioSpec(spec);
/* Allocate mixing buffer */
mixbuf = (Uint8 *) SDL_AllocAudioMem(spec->size);
if (mixbuf == NULL) {
SDL_OutOfMemory();
return (-1);
}
SDL_memset(mixbuf, spec->silence, spec->size);
/* We're ready to rock and roll. :-) */
return (0);
}
/*
* public methods (static but exported through the sysdep_dsp or plugin struct)
*/
static void *
irix_dsp_create(const void *flags)
{
ALpv pvs[4];
long tempbits, tempchan;
int oldrate;
struct irix_dsp_priv_data *priv = NULL;
struct sysdep_dsp_struct *dsp = NULL;
const struct sysdep_dsp_create_params *params = flags;
ALconfig devAudioConfig;
/* allocate the dsp struct */
if (!(dsp = calloc(1, sizeof(struct sysdep_dsp_struct))))
{
fprintf(stderr, "Error: malloc failed for struct sysdep_dsp_struct\n");
return NULL;
}
/* allocate private data */
if(!(priv = calloc(1, sizeof(struct irix_dsp_priv_data))))
{
fprintf(stderr, "Error: malloc failed for struct irix_dsp_priv_data\n");
free(dsp);
return NULL;
}
/* fill in the functions and some data */
priv->port_status = -1;
dsp->_priv = priv;
dsp->get_freespace = irix_dsp_get_freespace;
dsp->write = irix_dsp_write;
dsp->destroy = irix_dsp_destroy;
dsp->hw_info.type = params->type;
dsp->hw_info.samplerate = params->samplerate;
tempchan = (dsp->hw_info.type & SYSDEP_DSP_STEREO) ? 2 : 1;
tempbits = (dsp->hw_info.type & SYSDEP_DSP_16BIT) ? 2 : 1;
#ifdef IRIX_DEBUG
fprintf(stderr, "Source Format is %dHz, %d bit, %s, with bufsize %f\n",
dsp->hw_info.samplerate,
tempbits * 8, (tempchan == 2) ? "stereo" : "mono",
params->bufsize);
#endif
/*
* Since AL wants signed data in either case, and 8-bit data from
* core xmame is unsigned, let the core xmame convert everything
* to 16-bit signed.
*/
if (tempbits == 1)
{
dsp->hw_info.type |= SYSDEP_DSP_16BIT;
tempbits = 2;
}
/*
* Get the current hardware sampling rate
*/
pvs[0].param = AL_RATE;
if (alGetParams(AL_DEFAULT_OUTPUT, pvs, 1) < 0)
{
fprintf(stderr, "alGetParams failed: %s\n", alGetErrorString(oserror()));
irix_dsp_destroy(dsp);
return NULL;
}
oldrate = pvs[0].value.i;
/*
* If requested samplerate is different than current hardware rate,
* set it.
*/
if (oldrate != dsp->hw_info.samplerate)
{
int audioHardwareRate = oldrate;
fprintf(stderr, "System sample rate was %dHz, forcing %dHz instead.\n",
oldrate, dsp->hw_info.samplerate);
/*
* If the desired rate is unsupported, most devices (such as RAD) will
* force the device rate to be as close as possible to the desired rate.
* Since close isn't going to help us here, we avoid the call entirely,
* and let core xmame audio convert to our rate.
*/
if (RateSupported(AL_DEFAULT_OUTPUT, (float) dsp->hw_info.samplerate))
{
/* Set desired sample rate */
pvs[0].param = AL_MASTER_CLOCK;
pvs[0].value.i = AL_CRYSTAL_MCLK_TYPE;
pvs[1].param = AL_RATE;
pvs[1].value.i = dsp->hw_info.samplerate;
alSetParams(AL_DEFAULT_OUTPUT, pvs, 2);
/* Get the new sample rate */
pvs[0].param = AL_RATE;
if (alGetParams(AL_DEFAULT_OUTPUT, pvs, 1) < 0)
{
fprintf(stderr, "alGetParams failed: %s\n",
alGetErrorString(oserror()));
irix_dsp_destroy(dsp);
return NULL;
}
audioHardwareRate = pvs[0].value.i;
}
if (audioHardwareRate != dsp->hw_info.samplerate)
{
fprintf(stderr, "Requested rate of %dHz is not supported by "
"the audio hardware, so forcing\n"
"playback at %dHz.\n",
dsp->hw_info.samplerate, audioHardwareRate);
dsp->hw_info.samplerate = audioHardwareRate;
}
}
/* create a config descriptor */
devAudioConfig = alNewConfig();
if (devAudioConfig == NULL) {
fprintf(stderr, "Cannot get a Descriptor. Exiting..\n");
irix_dsp_destroy(dsp);
return NULL;
}
#ifdef FORCEMONO
dsp->hw_info.type &= ~SYSDEP_DSP_STEREO;
tempchan = 1;
#endif
priv->buffer_samples = dsp->hw_info.samplerate * params->bufsize;
priv->buffer_samples *= tempchan;
priv->sampwidth = tempbits;
priv->sampchan = tempchan;
fprintf(stderr, "Setting sound to %dHz, %d bit, %s\n",
dsp->hw_info.samplerate,
tempbits * 8, (tempchan == 2) ? "stereo" : "mono");
/* source specific audio parameters */
alSetChannels(devAudioConfig, tempchan);
alSetQueueSize(devAudioConfig, priv->buffer_samples);
alSetWidth(devAudioConfig, tempbits);
alSetSampFmt(devAudioConfig, AL_SAMPFMT_TWOSCOMP);
/* Open the audio port with the parameters we setup */
priv->devAudio = alOpenPort("audio_fd", "w", devAudioConfig);
if (priv->devAudio == NULL)
{
fprintf(stderr, "Error: Cannot get an audio channel descriptor.\n");
irix_dsp_destroy(dsp);
return NULL;
}
alFreeConfig(devAudioConfig);
/*
* Since we don't use FD's with AL, we use this to inform us
* of success
*/
priv->port_status = 0;
return dsp;
}