108 lines
1.6 KiB
C
108 lines
1.6 KiB
C
#undef _GNU_SOURCE
|
|
#define _GNU_SOURCE
|
|
#include <string.h>
|
|
|
|
#include <unistd.h>
|
|
#include <sys/ioctl.h>
|
|
|
|
#include <stdlib.h>
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
#include <fcntl.h>
|
|
|
|
#ifdef IS_FBSD
|
|
#include "machine/soundcard.h"
|
|
#define DSP_DEVICE "/dev/dsp"
|
|
#endif
|
|
|
|
#ifdef IS_OBSD
|
|
#include "soundcard.h"
|
|
#define DSP_DEVICE "/dev/sound"
|
|
#endif
|
|
|
|
#ifdef IS_LINUX
|
|
#include <sys/soundcard.h>
|
|
#define DSP_DEVICE "/dev/dsp"
|
|
#endif
|
|
|
|
#include "defs.h"
|
|
#include "pcm.h"
|
|
#include "rc.h"
|
|
|
|
/* FIXME - all this code is VERY basic, improve it! */
|
|
|
|
|
|
struct pcm pcm;
|
|
|
|
static int dsp;
|
|
static char *dsp_device;
|
|
static int stereo = 1;
|
|
static int samplerate = 44100;
|
|
static int sound = 1;
|
|
|
|
rcvar_t pcm_exports[] =
|
|
{
|
|
RCV_BOOL("sound", &sound),
|
|
RCV_INT("stereo", &stereo),
|
|
RCV_INT("samplerate", &samplerate),
|
|
RCV_STRING("oss_device", &dsp_device),
|
|
RCV_END
|
|
};
|
|
|
|
|
|
void pcm_init()
|
|
{
|
|
int n;
|
|
|
|
if (!sound)
|
|
{
|
|
pcm.hz = 11025;
|
|
pcm.len = 4096;
|
|
pcm.buf = malloc(pcm.len);
|
|
pcm.pos = 0;
|
|
dsp = -1;
|
|
return;
|
|
}
|
|
|
|
if (!dsp_device) dsp_device = strdup(DSP_DEVICE);
|
|
dsp = open(dsp_device, O_WRONLY);
|
|
|
|
n = 0x80009;
|
|
ioctl(dsp, SNDCTL_DSP_SETFRAGMENT, &n);
|
|
n = AFMT_U8;
|
|
ioctl(dsp, SNDCTL_DSP_SETFMT, &n);
|
|
n = stereo;
|
|
ioctl(dsp, SNDCTL_DSP_STEREO, &n);
|
|
pcm.stereo = n;
|
|
n = samplerate;
|
|
ioctl(dsp, SNDCTL_DSP_SPEED, &n);
|
|
pcm.hz = n;
|
|
pcm.len = n / 60;
|
|
pcm.buf = malloc(pcm.len);
|
|
}
|
|
|
|
void pcm_close()
|
|
{
|
|
if (pcm.buf) free(pcm.buf);
|
|
memset(&pcm, 0, sizeof pcm);
|
|
close(dsp);
|
|
}
|
|
|
|
int pcm_submit()
|
|
{
|
|
if (dsp < 0)
|
|
{
|
|
pcm.pos = 0;
|
|
return 0;
|
|
}
|
|
if (pcm.buf) write(dsp, pcm.buf, pcm.pos);
|
|
pcm.pos = 0;
|
|
return 1;
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|