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msu1: fix desync with turbo mode

This commit is contained in:
OV2 2017-09-02 22:15:43 +02:00
parent f76df76071
commit 49ed2ca631
1 changed files with 18 additions and 13 deletions
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31
apu/apu.cpp
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@ -341,6 +341,8 @@ bool8 S9xMixSamples (uint8 *buffer, int sample_count)
for (uint32 i = 0; i < sample_count; ++i)
*((int16*)(dest+(i * 2))) += *((int16*)(msu_sample+(i * 2)));
}
else // should never occur
assert(0);
}
}
else
@ -381,21 +383,10 @@ int S9xGetSampleCount (void)
/* TODO: Attach */
void S9xFinalizeSamples (void)
{
bool generate_msu1 = false;
if (!Settings.Mute)
{
if (Settings.MSU1)
{
S9xMSU1SetOutput((int16 *)msu::landing_buffer, msu::buffer_size);
S9xMSU1Generate(SNES::dsp.spc_dsp.sample_count());
if (!msu::resampler->push((short *)msu::landing_buffer, S9xMSU1Samples()))
{
//spc::sound_in_sync = FALSE;
//if (Settings.SoundSync && !Settings.TurboMode)
//return;
}
}
if (!spc::resampler->push((short *)spc::landing_buffer, SNES::dsp.spc_dsp.sample_count()))
{
/* We weren't able to process the entire buffer. Potential overrun. */
@ -404,6 +395,20 @@ void S9xFinalizeSamples (void)
if (Settings.SoundSync && !Settings.TurboMode)
return;
}
// only generate msu1 if we really consumed the dsp samples (sample_count() resets at end of function),
// otherwise we will generate multiple times for the same samples
if (Settings.MSU1)
generate_msu1 = true;
}
if (generate_msu1)
{
S9xMSU1SetOutput((int16 *)msu::landing_buffer, msu::buffer_size);
S9xMSU1Generate(SNES::dsp.spc_dsp.sample_count());
if (!msu::resampler->push((short *)msu::landing_buffer, S9xMSU1Samples()))
{
}
}