109 lines
2.7 KiB
C++
109 lines
2.7 KiB
C++
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <stdint.h>
|
|
#include <stdlib.h>
|
|
#include "resid-fp/sid.h"
|
|
#include "sound_resid.h"
|
|
|
|
typedef struct psid_t
|
|
{
|
|
/* resid sid implementation */
|
|
SIDFP *sid;
|
|
int16_t last_sample;
|
|
} psid_t;
|
|
|
|
psid_t *psid;
|
|
|
|
void *sid_init()
|
|
{
|
|
// psid_t *psid;
|
|
int c;
|
|
sampling_method method=SAMPLE_INTERPOLATE;
|
|
float cycles_per_sec = 14318180.0 / 16.0;
|
|
|
|
psid = new psid_t;
|
|
// psid = (psid_t *)malloc(sizeof(sound_t));
|
|
psid->sid = new SIDFP;
|
|
|
|
psid->sid->set_chip_model(MOS8580FP);
|
|
|
|
psid->sid->set_voice_nonlinearity(1.0f);
|
|
psid->sid->get_filter().set_distortion_properties(0.f, 0.f, 0.f);
|
|
psid->sid->get_filter().set_type4_properties(6.55f, 20.0f);
|
|
|
|
psid->sid->enable_filter(true);
|
|
psid->sid->enable_external_filter(true);
|
|
|
|
psid->sid->reset();
|
|
|
|
for (c=0;c<32;c++)
|
|
psid->sid->write(c,0);
|
|
|
|
if (!psid->sid->set_sampling_parameters((float)cycles_per_sec, method,
|
|
(float)48000, 0.9*48000.0/2.0))
|
|
{
|
|
// printf("reSID failed!\n");
|
|
}
|
|
|
|
psid->sid->set_chip_model(MOS6581FP);
|
|
psid->sid->set_voice_nonlinearity(0.96f);
|
|
psid->sid->get_filter().set_distortion_properties(3.7e-3f, 2048.f, 1.2e-4f);
|
|
|
|
psid->sid->input(0);
|
|
psid->sid->get_filter().set_type3_properties(1.33e6f, 2.2e9f, 1.0056f, 7e3f);
|
|
|
|
return (void *)psid;
|
|
}
|
|
|
|
void sid_close(void *p)
|
|
{
|
|
// psid_t *psid = (psid_t *)p;
|
|
delete psid->sid;
|
|
// free(psid);
|
|
}
|
|
|
|
void sid_reset(void *p)
|
|
{
|
|
// psid_t *psid = (psid_t *)p;
|
|
int c;
|
|
|
|
psid->sid->reset();
|
|
|
|
for (c = 0; c < 32; c++)
|
|
psid->sid->write(c, 0);
|
|
}
|
|
|
|
|
|
uint8_t sid_read(uint16_t addr, void *p)
|
|
{
|
|
// psid_t *psid = (psid_t *)p;
|
|
|
|
return psid->sid->read(addr & 0x1f);
|
|
// return 0xFF;
|
|
}
|
|
|
|
void sid_write(uint16_t addr, uint8_t val, void *p)
|
|
{
|
|
// psid_t *psid = (psid_t *)p;
|
|
|
|
psid->sid->write(addr & 0x1f,val);
|
|
}
|
|
|
|
#define CLOCK_DELTA(n) (int)(((14318180.0 * n) / 16.0) / 48000.0)
|
|
|
|
static void fillbuf2(int& count, int16_t *buf, int len)
|
|
{
|
|
int c;
|
|
c = psid->sid->clock(count, buf, len, 1);
|
|
if (!c)
|
|
*buf = psid->last_sample;
|
|
psid->last_sample = *buf;
|
|
}
|
|
void sid_fillbuf(int16_t *buf, int len, void *p)
|
|
{
|
|
// psid_t *psid = (psid_t *)p;
|
|
int x = CLOCK_DELTA(len);
|
|
|
|
fillbuf2(x, buf, len);
|
|
}
|