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/******************************************************************
* S G I Support by Mike Muuss (Mike@arl.mil)
*
******************************************************************/
#if defined(__sgi)
#include "config.h"
#include <unistd.h>
#include <stdio.h>
#include <audio.h>
#include "main.h"
#include "dsp.h"
static ALport sgi_port;
static ALconfig sgi_config;
void write_dsp_device(void *buf, int size)
{
int nsamp;
int ret;
/* need number of samples, not number of bytes */
nsamp = size/4;
ret = ALwritesamps(sgi_port, buf, nsamp);
if( ret != 0 ) {
perror("ALwritesamps()");
fprintf(stderr,"ALwritesamps(%d) failed, ret=%d\n", nsamp, ret);
exit(1);
}
}
static long sgi_params[] = { AL_OUTPUT_RATE, 0 };
int get_dsp_device(void)
{
mixspeed = 44100;
sgi_params[1] = mixspeed;
if( ALsetparams( AL_DEFAULT_DEVICE, sgi_params, 2 ) < 0 ) {
perror("ALsetparams()");
fprintf(stderr,"ALsetparams() unable to set speed %d\n", mixspeed);
}
sgi_config = ALnewconfig();
stereo = 1;
bit16 = 1;
ALsetwidth( sgi_config, AL_SAMPLE_16); /* range -32768 to 32767. */
ALsetchannels( sgi_config, AL_STEREO );
sgi_port = ALopenport("s3m", "w", sgi_config );
audio_buffer_size = 44100 * 4;
if (!(audio_start_buffer = (uint8 *) malloc(audio_buffer_size))) {
fprintf(stderr,"Could not get audio buffer memory!\n");
exit(1);
}
audio_end_buffer = &audio_start_buffer[audio_buffer_size];
audio_curptr = audio_start_buffer;
/* phony fd */
/* Should no longer be necessary under new code layout */
/* audio = 99; */
}
void close_dsp_device(void)
{
static char zeros[4]; /* one sample of zeros */
int left;
ALwritesamps(sgi_port, zeros, 1);
while( (left = ALgetfilled(sgi_port)) > 1 ) {
sleep(1);
}
ALcloseport(sgi_port);
ALfreeconfig(sgi_config);
}
#endif /* SGI */
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