RaySollium99/picodrive
1
0
Fork 0
mirror of https://github.com/RaySollium99/picodrive.git synced 2025-09-04 23:07:46 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions

sound, fix ym2413 fm sound load/save

Browse source
This commit is contained in:
kub 2022-05-11 00:18:47 +02:00
parent 732c328c41
commit 2ec448a8ce
3 changed files with 42 additions and 13 deletions
Download patch file Download diff file Expand all files Collapse all files

30
pico/sound/sound.c
View file

@ -29,11 +29,33 @@ extern int *sn76496_regs;
// ym2413
#define YM2413_CLK 3579545
OPLL old_opll;
static OPLL *opll = NULL;
unsigned YM2413_reg;
static OPLL old_opll;
static struct {
uint32_t adr;
uint8_t reg[sizeof(opll->reg)];
} opll_buf;
PICO_INTERNAL void *YM2413GetRegs(void)
{
memcpy(opll_buf.reg, opll->reg, sizeof(opll->reg));
opll_buf.adr = opll->adr;
return &opll_buf;
}
PICO_INTERNAL void YM2413UnpackState(void)
{
int i;
for (i = sizeof(opll->reg)-1; i >= 0; i--) {
OPLL_writeIO(opll, 0, i);
OPLL_writeIO(opll, 1, opll_buf.reg[i]);
}
opll->adr = opll_buf.adr;
}
static resampler_t *fmresampler;
static int (*PsndFMUpdate)(s32 *buffer, int length, int stereo, int is_buf_empty);
PICO_INTERNAL void PsndInit(void)
{
@ -57,8 +79,6 @@ PICO_INTERNAL void PsndReset(void)
timers_reset();
}
int (*PsndFMUpdate)(s32 *buffer, int length, int stereo, int is_buf_empty);
// FM polyphase FIR resampling
#define FMFIR_TAPS 9
@ -142,6 +162,8 @@ void PsndRerate(int preserve_state)
if (preserve_state) memcpy(&old_opll, opll, sizeof(OPLL)); // remember old state
OPLL_setRate(opll, PicoIn.sndRate);
OPLL_reset(opll);
if (preserve_state) memcpy(&opll->adr, &old_opll.adr, sizeof(OPLL)-20); // restore old state
OPLL_forceRefresh(opll);
}
if (state)