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audren: Implement I3dl2Reverb

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Most notable fix is the voices in Fire Emblem Three Houses
This commit is contained in:
Chloe Marcec 2021-02-11 18:46:20 +11:00 • committed by bunnei
parent c86d770af9
commit 4a7fd91857
8 changed files with 569 additions and 18 deletions
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31
src/audio_core/effect_context.h
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@ -8,6 +8,7 @@
#include <memory>
#include <vector>
#include "audio_core/common.h"
#include "audio_core/delay_line.h"
#include "common/common_funcs.h"
#include "common/common_types.h"
#include "common/swap.h"
@ -194,6 +195,8 @@ public:
[[nodiscard]] bool IsEnabled() const;
[[nodiscard]] s32 GetMixID() const;
[[nodiscard]] s32 GetProcessingOrder() const;
[[nodiscard]] std::vector<u8>& GetWorkBuffer();
[[nodiscard]] const std::vector<u8>& GetWorkBuffer() const;
protected:
UsageState usage{UsageState::Invalid};
@ -201,6 +204,7 @@ protected:
s32 mix_id{};
s32 processing_order{};
bool enabled = false;
std::vector<u8> work_buffer{};
};
template <typename T>
@ -212,7 +216,7 @@ public:
return internal_params;
}
const I3dl2ReverbParams& GetParams() const {
const T& GetParams() const {
return internal_params;
}
@ -229,6 +233,27 @@ public:
void UpdateForCommandGeneration() override;
};
struct I3dl2ReverbState {
f32 lowpass_0{};
f32 lowpass_1{};
f32 lowpass_2{};
DelayLineBase early_delay_line{};
std::array<u32, AudioCommon::I3DL2REVERB_TAPS> early_tap_steps{};
f32 early_gain{};
f32 late_gain{};
u32 early_to_late_taps{};
std::array<DelayLineBase, AudioCommon::I3DL2REVERB_DELAY_LINE_COUNT> fdn_delay_line{};
std::array<DelayLineAllPass, AudioCommon::I3DL2REVERB_DELAY_LINE_COUNT> decay_delay_line0{};
std::array<DelayLineAllPass, AudioCommon::I3DL2REVERB_DELAY_LINE_COUNT> decay_delay_line1{};
f32 last_reverb_echo{};
DelayLineBase center_delay_line{};
std::array<std::array<f32, AudioCommon::I3DL2REVERB_DELAY_LINE_COUNT>, 3> lpf_coefficients{};
std::array<f32, AudioCommon::I3DL2REVERB_DELAY_LINE_COUNT> shelf_filter{};
f32 dry_gain{};
};
class EffectI3dl2Reverb : public EffectGeneric<I3dl2ReverbParams> {
public:
explicit EffectI3dl2Reverb();
@ -237,8 +262,12 @@ public:
void Update(EffectInfo::InParams& in_params) override;
void UpdateForCommandGeneration() override;
I3dl2ReverbState& GetState();
const I3dl2ReverbState& GetState() const;
private:
bool skipped = false;
I3dl2ReverbState state{};
};
class EffectBiquadFilter : public EffectGeneric<BiquadFilterParams> {