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/******************************************************************
* SUN/DEC AF Support by Ricky Beam (cramer@catt.ncsu.edu)
*
******************************************************************/
#ifdef SUN
#include "config.h"
#include <unistd.h>
#include <stdio.h>
#include <fcntl.h>
#include <sys/types.h>
#include <multimedia/audio_hdr.h>
#include <multimedia/audio_errno.h>
#include <multimedia/audio_device.h>
#include "main.h"
#include "dsp.h"
Audio_hdr hdr_save, hdr;
static int audio;
int get_dsp_device() {
uint32 j;
audio = open("/dev/audio",O_WRONLY,0);
if (audio < 1) {
printf("Could not open audio device|\n");
exit(1);
}
/* Save the device configuration 'cause it don't reset on its own */
audio_get_play_config(audio, &hdr_save);
audio_get_play_config(audio, &hdr);
hdr.encoding = AUDIO_ENCODING_LINEAR;
hdr.bytes_per_unit = 2;
if (audio_set_play_config(audio, &hdr) != AUDIO_SUCCESS)
fprintf(stderr, "unable to set sample encoding\n");
if (stereo)
{ /* setup stereo */
hdr.channels = 2;
if (audio_set_play_config(audio, &hdr) != AUDIO_SUCCESS)
fprintf(stderr, "unable to setup stereo\n");
audio_get_play_config(audio, &hdr);
stereo = (hdr.channels==1)?0:1;
}
if (bit16)
{ /* set 16 bit? */
j = 16;
hdr.bytes_per_unit = 2;
if (audio_set_play_config(audio, &hdr) != AUDIO_SUCCESS)
fprintf(stderr, "unable to setup 16 bit samples\n");
audio_get_play_config(audio, &hdr);
j = (hdr.bytes_per_unit==2)?16:8;
if (j != 16) bit16 = 0;
}
/* Setup playback speed */
hdr.sample_rate = mixspeed;
if (audio_set_play_config(audio, &hdr) != AUDIO_SUCCESS)
fprintf(stderr, "unable to setup sample speed\n");
audio_get_play_config(audio, &hdr);
mixspeed = hdr.sample_rate;
/* I don't know; what's a good size? */
audio_buffer_size = 32768;
if (!(audio_start_buffer = (uint8 *) malloc(audio_buffer_size)))
{
printf("Could not get audio buffer memory!\n");
exit(1);
}
audio_end_buffer = &audio_start_buffer[audio_buffer_size];
audio_curptr = audio_start_buffer;
return;
}
void write_dsp_device(void *buf, int size) {
write(audio,audio_start_buffer,audio_buffer_size);
return;
}
void close_dsp_device() {
close(audio);
return;
}
#endif /* SUN */
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