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- #include "config.h"
-
- #include <stdio.h>
- #include <fcntl.h>
- #include <sys/ioctl.h>
- #ifdef VOXWARE
- #include <sys/soundcard.h>
- #endif
- #include "pokey.h"
- #include "pokey11.h"
-
- static char *rcsid = "$Id: sound.c,v 1.2 1997/04/18 22:23:38 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
-
- #ifdef VOXWARE
- static char dsp_buffer[44100];
- static int sndbufsize;
- static int dsp_fd;
- #endif
-
- static sound_enabled = TRUE;
-
- static int dsp_sample_rate;
- static int dsp_sample_rate_divisor = 35;
-
- 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;
-
- #ifdef VOXWARE
- 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);
- }
- #else
- dsp_sample_rate=1;
- Pokey_sound_init(FREQ_17_EXACT,dsp_sample_rate);
- #endif
- }
-
- void Voxware_Exit (void)
- {
- #ifdef VOXWARE
- if (sound_enabled)
- close (dsp_fd);
- #endif
- }
-
- void Voxware_UpdateSound (void)
- {
- #ifdef VOXWARE
- 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);
- }
- #endif
- }
-