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PCE: optimize 5ms

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This commit is contained in:
tildearrow 2025-03-05 19:07:10 -05:00
parent 68a550a419
commit 43891b8d79
2 changed files with 1 additions and 7 deletions
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6
src/engine/platform/sound/pce_psg.cpp
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@ -78,7 +78,7 @@ inline void PCE_PSG::UpdateOutputSub(const int32_t timestamp, psg_channel *ch, c
if (delta[0]) blip_add_delta(bb[0],timestamp,delta[0]);
if (delta[1]) blip_add_delta(bb[1],timestamp,delta[1]);
ch->oscBuf->putSample(timestamp-ch->lasttsbase,CLAMP(samp0+samp1,-32768,32767));
ch->oscBuf->putSample(timestamp,CLAMP(samp0+samp1,-32768,32767));
ch->blip_prev_samp[0] = samp0;
ch->blip_prev_samp[1] = samp1;
@ -409,13 +409,11 @@ PCE_PSG::PCE_PSG(int want_revision)
bb[1]=NULL;
lastts = 0;
lasttsbase = 0;
for(int ch = 0; ch < 6; ch++)
{
channel[ch].blip_prev_samp[0] = 0;
channel[ch].blip_prev_samp[1] = 0;
channel[ch].lastts = 0;
channel[ch].lasttsbase = 0;
}
SetVolume(1.0); // Will build dbtable in the process.
@ -753,11 +751,9 @@ void PCE_PSG::Update(int32_t timestamp)
void PCE_PSG::ResetTS(int32_t ts_base)
{
lastts = ts_base;
lasttsbase = ts_base;
for(int chc = 0; chc < 6; chc++) {
channel[chc].lastts = ts_base;
channel[chc].lasttsbase = ts_base;
}
}

2
src/engine/platform/sound/pce_psg.h
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@ -52,7 +52,6 @@ struct psg_channel
int32_t samp_accum; // The result of adding up all the samples in the waveform buffer(part of an optimization for high-frequency playback).
int32_t blip_prev_samp[2];
int32_t lastts;
int32_t lasttsbase;
uint16_t frequency; /* Channel frequency */
uint8_t balance; /* Channel balance */
@ -187,7 +186,6 @@ class PCE_PSG
bool vol_pending;
int32_t lastts;
int32_t lasttsbase;
int revision;
int32_t dbtable_volonly[32];