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sound, don't reinitialize after menu if not needed

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This commit is contained in:
kub 2024-05-18 11:35:22 +02:00
parent 67c9ba38cb
commit 864ac1d6a6
4 changed files with 44 additions and 23 deletions
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49
pico/sound/sound.c
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@ -33,7 +33,6 @@ static int (*PsndFMUpdate)(s32 *buffer, int length, int stereo, int is_buf_empty
// ym2413
static OPLL *opll = NULL;
static OPLL old_opll;
static struct {
uint32_t adr;
uint8_t reg[sizeof(opll->reg)];
@ -152,6 +151,10 @@ static int YM2612UpdateONE(s32 *buffer, int length, int stereo, int is_buf_empty
return YM2612UpdateOne(buffer, length, stereo, is_buf_empty);
}
static int ymclock;
static int ymrate;
static int ymopts;
// to be called after changing sound rate or chips
void PsndRerate(int preserve_state)
{
@ -159,54 +162,58 @@ void PsndRerate(int preserve_state)
int target_fps = Pico.m.pal ? 50 : 60;
int target_lines = Pico.m.pal ? 313 : 262;
int sms_clock = Pico.m.pal ? OSC_PAL/15 : OSC_NTSC/15;
int ym2413_rate = (sms_clock + 36) / 72;
int ym2612_clock = Pico.m.pal ? OSC_PAL/7 : OSC_NTSC/7;
int ym2612_rate = YM2612_NATIVE_RATE();
int ym2413_rate = (sms_clock + 36) / 72;
int ym2612_init = !preserve_state;
if (preserve_state) {
// don't init YM2612 if preserve_state and no parameter changes
ym2612_init |= ymclock != ym2612_clock || ymopts != (PicoIn.opt & (POPT_DIS_FM_SSGEG|POPT_EN_FM_DAC));
ym2612_init |= ymrate != (PicoIn.opt & POPT_EN_FM_FILTER ? ym2612_rate : PicoIn.sndRate);
ymclock = ym2612_clock;
ymrate = (PicoIn.opt & POPT_EN_FM_FILTER ? ym2612_rate : PicoIn.sndRate);
ymopts = PicoIn.opt & (POPT_DIS_FM_SSGEG|POPT_EN_FM_DAC);
if (preserve_state && ym2612_init) {
state = malloc(0x204);
if (state == NULL) return;
ym2612_pack_state();
memcpy(state, YM2612GetRegs(), 0x204);
if (opll != NULL)
memcpy(&old_opll, opll, sizeof(OPLL)); // remember old state
}
if (PicoIn.AHW & PAHW_SMS) {
OPLL_setRate(opll, ym2413_rate);
OPLL_reset(opll);
if (!preserve_state)
OPLL_reset(opll);
YMFM_setup_FIR(ym2413_rate, PicoIn.sndRate, 0);
PsndFMUpdate = YM2413UpdateFIR;
} else if ((PicoIn.opt & POPT_EN_FM_FILTER) && ym2612_rate != PicoIn.sndRate) {
// polyphase FIR resampler, resampling directly from native to output rate
YM2612Init(ym2612_clock, ym2612_rate,
if (ym2612_init)
YM2612Init(ym2612_clock, ym2612_rate,
((PicoIn.opt&POPT_DIS_FM_SSGEG) ? 0 : ST_SSG) |
((PicoIn.opt&POPT_EN_FM_DAC) ? ST_DAC : 0));
YMFM_setup_FIR(ym2612_rate, PicoIn.sndRate, PicoIn.opt & POPT_EN_STEREO);
PsndFMUpdate = YM2612UpdateFIR;
} else {
YM2612Init(ym2612_clock, PicoIn.sndRate,
if (ym2612_init)
YM2612Init(ym2612_clock, PicoIn.sndRate,
((PicoIn.opt&POPT_DIS_FM_SSGEG) ? 0 : ST_SSG) |
((PicoIn.opt&POPT_EN_FM_DAC) ? ST_DAC : 0));
PsndFMUpdate = YM2612UpdateONE;
}
if (preserve_state) {
if (preserve_state && ym2612_init) {
// feed it back it's own registers, just like after loading state
memcpy(YM2612GetRegs(), state, 0x204);
ym2612_unpack_state();
if (opll != NULL) {
memcpy(&opll->adr, &old_opll.adr, sizeof(OPLL)-20); // restore old state
OPLL_forceRefresh(opll);
}
free(state);
}
if (preserve_state) memcpy(state, sn76496_regs, 28*4); // remember old state
SN76496_init(Pico.m.pal ? OSC_PAL/15 : OSC_NTSC/15, PicoIn.sndRate);
if (preserve_state) memcpy(sn76496_regs, state, 28*4); // restore old state
if (state)
free(state);
if (preserve_state)
SN76496_set_clockrate(Pico.m.pal ? OSC_PAL/15 : OSC_NTSC/15, PicoIn.sndRate);
else
SN76496_init(Pico.m.pal ? OSC_PAL/15 : OSC_NTSC/15, PicoIn.sndRate);
// calculate Pico.snd.len
Pico.snd.len = PicoIn.sndRate / target_fps;