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SPU: Update ADSR envelope when register changes 

Fixes menu sounds in Final Fantasy 7 staying audible for too long.
This commit is contained in:
Connor McLaughlin 2020-06-02 01:59:44 +10:00
parent dcfb929de5
commit 8eb3ac69b2
2 changed files with 23 additions and 12 deletions
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33
src/core/spu.cpp
View File

@ -71,8 +71,11 @@ void SPU::Reset()
v.current_block_samples.fill(s16(0));
v.previous_block_last_samples.fill(s16(0));
v.adpcm_last_samples.fill(s32(0));
v.SetADSRPhase(ADSRPhase::Off);
v.adsr_envelope.Reset(0, false, false);
v.adsr_phase = ADSRPhase::Off;
v.adsr_target = 0;
v.has_samples = false;
v.ignore_loop_address = false;
}
m_transfer_fifo.Clear();
@ -594,21 +597,25 @@ void SPU::WriteVoiceRegister(u32 offset, u16 value)
case 0x08: // adsr low
{
Log_DebugPrintf("SPU voice %u ADSR low <- 0x%04X", voice_index, value);
Log_DebugPrintf("SPU voice %u ADSR low <- 0x%04X (was 0x%04X)", voice_index, value, voice.regs.adsr.bits_low);
voice.regs.adsr.bits_low = value;
if (voice.IsOn())
voice.UpdateADSREnvelope();
}
break;
case 0x0A: // adsr high
{
Log_DebugPrintf("SPU voice %u ADSR high <- 0x%04X", voice_index, value);
Log_DebugPrintf("SPU voice %u ADSR high <- 0x%04X (was 0x%04X)", voice_index, value, voice.regs.adsr.bits_low);
voice.regs.adsr.bits_high = value;
if (voice.IsOn())
voice.UpdateADSREnvelope();
}
break;
case 0x0C: // adsr volume
{
Log_DebugPrintf("SPU voice %u ADSR volume <- 0x%04X", voice_index, value);
Log_DebugPrintf("SPU voice %u ADSR volume <- 0x%04X (was 0x%04X)", voice_index, value, voice.regs.adsr_volume);
voice.regs.adsr_volume = value;
}
break;
@ -1055,7 +1062,8 @@ void SPU::Voice::KeyOn()
adpcm_last_samples.fill(0);
has_samples = false;
ignore_loop_address = false;
SetADSRPhase(ADSRPhase::Attack);
adsr_phase = ADSRPhase::Attack;
UpdateADSREnvelope();
}
void SPU::Voice::KeyOff()
@ -1063,7 +1071,8 @@ void SPU::Voice::KeyOff()
if (adsr_phase == ADSRPhase::Off || adsr_phase == ADSRPhase::Release)
return;
SetADSRPhase(ADSRPhase::Release);
adsr_phase = ADSRPhase::Release;
UpdateADSREnvelope();
}
void SPU::Voice::ForceOff()
@ -1072,7 +1081,7 @@ void SPU::Voice::ForceOff()
return;
regs.adsr_volume = 0;
SetADSRPhase(ADSRPhase::Off);
adsr_phase = ADSRPhase::Off;
}
SPU::ADSRPhase SPU::GetNextADSRPhase(ADSRPhase phase)
@ -1216,10 +1225,9 @@ void SPU::VolumeSweep::Tick()
(envelope.decreasing ? (current_level > ENVELOPE_MIN_VOLUME) : (current_level < ENVELOPE_MAX_VOLUME));
}
void SPU::Voice::SetADSRPhase(ADSRPhase phase)
void SPU::Voice::UpdateADSREnvelope()
{
adsr_phase = phase;
switch (phase)
switch (adsr_phase)
{
case ADSRPhase::Off:
adsr_target = 0;
@ -1261,7 +1269,10 @@ void SPU::Voice::TickADSR()
const bool reached_target =
adsr_envelope.decreasing ? (regs.adsr_volume <= adsr_target) : (regs.adsr_volume >= adsr_target);
if (reached_target)
SetADSRPhase(GetNextADSRPhase(adsr_phase));
{
adsr_phase = GetNextADSRPhase(adsr_phase);
UpdateADSREnvelope();
}
}
}

2
src/core/spu.h
View File

@ -277,7 +277,7 @@ private:
s32 Interpolate() const;
// Switches to the specified phase, filling in target.
void SetADSRPhase(ADSRPhase phase);
void UpdateADSREnvelope();
// Updates the ADSR volume/phase.
void TickADSR();