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#ifndef AMIGA
#include "config.h"
#endif
#ifdef VOXWARE
#include <fcntl.h>
#include <sys/ioctl.h>
#include <sys/soundcard.h>
#include "pokeysnd.h"
static char *rcsid = "$Id: sound.c,v 1.5 1998/02/21 15:20:42 david Exp $";
/* 0002 = 2 Fragments */
/* 0007 = means each fragment is 2^2 or 128 bytes */
/* See voxware docs in /usr/src/linux/drivers/sound for more info */
#define FRAG_SPEC 0x0002000a
#define FALSE 0
#define TRUE 1
static char dsp_buffer[44100];
static int sndbufsize;
static int gain = 8;
static sound_enabled = TRUE;
static int dsp_fd;
static int dsp_sample_rate;
static int dsp_sample_rate_divisor = 35;
static int AUDCTL = 0x00;
static int AUDF[4] =
{0, 0, 0, 0};
static int AUDC[4] =
{0, 0, 0, 0};
void Voxware_Initialise(int *argc, char *argv[])
{
int i, j;
for (i = j = 1; i < *argc; i++) {
if (strcmp(argv[i], "-sound") == 0)
sound_enabled = TRUE;
else if (strcmp(argv[i], "-nosound") == 0)
sound_enabled = FALSE;
else if (strcmp(argv[i], "-dsp_divisor") == 0)
sscanf(argv[++i], "%d", &dsp_sample_rate_divisor);
else
argv[j++] = argv[i];
}
*argc = j;
if (sound_enabled) {
int channel;
int dspbits;
unsigned int formats;
int tmp;
dsp_fd = open("/dev/dsp", O_WRONLY, 0777);
if (dsp_fd == -1) {
perror("/dev/dsp");
exit(1);
}
/*
* Get sound formats
*/
ioctl(dsp_fd, SNDCTL_DSP_GETFMTS, &formats);
/*
* Set sound of sound fragment to special?
*/
tmp = FRAG_SPEC;
ioctl(dsp_fd, SNDCTL_DSP_SETFRAGMENT, &tmp);
/*
* Get preferred buffer size
*/
ioctl(dsp_fd, SNDCTL_DSP_GETBLKSIZE, &sndbufsize);
/*
* Set to 8bit sound
*/
dspbits = 8;
ioctl(dsp_fd, SNDCTL_DSP_SAMPLESIZE, &dspbits);
ioctl(dsp_fd, SOUND_PCM_READ_BITS, &dspbits);
/*
* Set sample rate
*/
ioctl(dsp_fd, SNDCTL_DSP_SPEED, &dsp_sample_rate);
ioctl(dsp_fd, SOUND_PCM_READ_RATE, &dsp_sample_rate);
Pokey_sound_init(FREQ_17_EXACT, dsp_sample_rate, 1);
}
}
void Voxware_Exit(void)
{
if (sound_enabled)
close(dsp_fd);
}
void Voxware_UpdateSound(void)
{
if (sound_enabled) {
sndbufsize = dsp_sample_rate / dsp_sample_rate_divisor;
Pokey_process(dsp_buffer, sndbufsize);
/*
* Send sound buffer to DSP device
*/
write(dsp_fd, dsp_buffer, sndbufsize);
}
}
void Atari_AUDC(int channel, int byte)
{
channel--;
Update_pokey_sound(/* 0xd201 */ 1 + channel + channel, byte, 0, gain);
}
void Atari_AUDF(int channel, int byte)
{
channel--;
Update_pokey_sound(/* 0xd200 */ 0 + channel + channel, byte, 0, gain);
}
void Atari_AUDCTL(int byte)
{
Update_pokey_sound(/* 0xd208 */ 8, byte, 0, gain);
}
#else
void Atari_AUDC(int channel, int byte)
{
}
void Atari_AUDF(int channel, int byte)
{
}
void Atari_AUDCTL(int byte)
{
}
#endif
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