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SPU: Port reverb algorithm from Mednafen-PSX

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This commit is contained in:
Connor McLaughlin
2020-04-25 00:37:02 +10:00
parent 6e6c11f8bf
commit 191c3450cc
3 changed files with 240 additions and 170 deletions
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78
src/core/spu.h
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@ -292,38 +292,38 @@ private:
{
struct
{
u16 dAPF1;
u16 dAPF2;
s16 vIIR;
s16 vCOMB1;
s16 vCOMB2;
s16 vCOMB3;
s16 vCOMB4;
s16 vWALL;
s16 vAPF1;
s16 vAPF2;
u16 mLSAME;
u16 mRSAME;
u16 mLCOMB1;
u16 mRCOMB1;
u16 mLCOMB2;
u16 mRCOMB2;
u16 dLSAME;
u16 dRSAME;
u16 mLDIFF;
u16 mRDIFF;
u16 mLCOMB3;
u16 mRCOMB3;
u16 mLCOMB4;
u16 mRCOMB4;
u16 dLDIFF;
u16 dRDIFF;
u16 mLAPF1;
u16 mRAPF1;
u16 mLAPF2;
u16 mRAPF2;
s16 vLIN;
s16 vRIN;
u16 FB_SRC_A;
u16 FB_SRC_B;
s16 IIR_ALPHA;
s16 ACC_COEF_A;
s16 ACC_COEF_B;
s16 ACC_COEF_C;
s16 ACC_COEF_D;
s16 IIR_COEF;
s16 FB_ALPHA;
s16 FB_X;
u16 IIR_DEST_A0;
u16 IIR_DEST_A1;
u16 ACC_SRC_A0;
u16 ACC_SRC_A1;
u16 ACC_SRC_B0;
u16 ACC_SRC_B1;
u16 IIR_SRC_A0;
u16 IIR_SRC_A1;
u16 IIR_DEST_B0;
u16 IIR_DEST_B1;
u16 ACC_SRC_C0;
u16 ACC_SRC_C1;
u16 ACC_SRC_D0;
u16 ACC_SRC_D1;
u16 IIR_SRC_B1;
u16 IIR_SRC_B0;
u16 MIX_DEST_A0;
u16 MIX_DEST_A1;
u16 MIX_DEST_B0;
u16 MIX_DEST_B1;
s16 IN_COEF_L;
s16 IN_COEF_R;
};
u16 rev[NUM_REVERB_REGS];
@ -366,9 +366,10 @@ private:
void UpdateNoise();
u32 ReverbMemoryAddress(u32 address) const;
s16 ReverbRead(u32 address);
s16 ReverbRead(u32 address, s32 offset = 0);
void ReverbWrite(u32 address, s16 data);
void DoReverb();
void ComputeReverb();
void ProcessReverb(s16 left_in, s16 right_in, s32* left_out, s32* right_out);
void Execute(TickCount ticks);
void UpdateEventInterval();
@ -384,7 +385,6 @@ private:
std::unique_ptr<TimingEvent> m_tick_event;
std::unique_ptr<TimingEvent> m_transfer_event;
std::unique_ptr<Common::WAVWriter> m_dump_writer;
u32 m_tick_counter = 0;
TickCount m_ticks_carry = 0;
SPUCNT m_SPUCNT = {};
@ -418,12 +418,12 @@ private:
u32 m_noise_level = 0;
u32 m_reverb_on_register = 0;
u32 m_reverb_base_address = 0;
u32 m_reverb_current_address = 0;
ReverbRegisters m_reverb_registers{};
s16 m_reverb_left_input = 0;
s16 m_reverb_right_input = 0;
s16 m_reverb_left_output = 0;
s16 m_reverb_right_output = 0;
std::array<std::array<s16, 128>, 2> m_reverb_downsample_buffer;
std::array<std::array<s16, 64>, 2> m_reverb_upsample_buffer;
s32 m_reverb_resample_buffer_position = 0;
std::array<Voice, NUM_VOICES> m_voices{};