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// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#pragma once
#include <array>
#include <vector>
#include "audio_core/common/common.h"
#include "audio_core/renderer/effect/effect_info_base.h"
#include "common/common_types.h"
#include "common/fixed_point.h"
namespace AudioCore::AudioRenderer {
class ReverbInfo : public EffectInfoBase {
public:
struct ParameterVersion1 {
/* 0x00 */ std::array<s8, MaxChannels> inputs;
/* 0x06 */ std::array<s8, MaxChannels> outputs;
/* 0x0C */ u16 channel_count_max;
/* 0x0E */ u16 channel_count;
/* 0x10 */ u32 sample_rate;
/* 0x14 */ u32 early_mode;
/* 0x18 */ s32 early_gain;
/* 0x1C */ s32 pre_delay;
/* 0x20 */ s32 late_mode;
/* 0x24 */ s32 late_gain;
/* 0x28 */ s32 decay_time;
/* 0x2C */ s32 high_freq_Decay_ratio;
/* 0x30 */ s32 colouration;
/* 0x34 */ s32 base_gain;
/* 0x38 */ s32 wet_gain;
/* 0x3C */ s32 dry_gain;
/* 0x40 */ ParameterState state;
};
static_assert(sizeof(ParameterVersion1) <= sizeof(EffectInfoBase::InParameterVersion1),
"ReverbInfo::ParameterVersion1 has the wrong size!");
struct ParameterVersion2 {
/* 0x00 */ std::array<s8, MaxChannels> inputs;
/* 0x06 */ std::array<s8, MaxChannels> outputs;
/* 0x0C */ u16 channel_count_max;
/* 0x0E */ u16 channel_count;
/* 0x10 */ u32 sample_rate;
/* 0x14 */ u32 early_mode;
/* 0x18 */ s32 early_gain;
/* 0x1C */ s32 pre_delay;
/* 0x20 */ s32 late_mode;
/* 0x24 */ s32 late_gain;
/* 0x28 */ s32 decay_time;
/* 0x2C */ s32 high_freq_decay_ratio;
/* 0x30 */ s32 colouration;
/* 0x34 */ s32 base_gain;
/* 0x38 */ s32 wet_gain;
/* 0x3C */ s32 dry_gain;
/* 0x40 */ ParameterState state;
};
static_assert(sizeof(ParameterVersion2) <= sizeof(EffectInfoBase::InParameterVersion2),
"ReverbInfo::ParameterVersion2 has the wrong size!");
static constexpr u32 MaxDelayLines = 4;
static constexpr u32 MaxDelayTaps = 10;
static constexpr u32 NumEarlyModes = 5;
static constexpr u32 NumLateModes = 5;
struct ReverbDelayLine {
void Initialize(const s32 delay_time, const f32 decay_rate) {
buffer.resize(delay_time + 1, 0);
buffer_end = &buffer[delay_time];
output = &buffer[0];
decay = decay_rate;
sample_count_max = delay_time;
SetDelay(delay_time);
}
void SetDelay(const s32 delay_time) {
if (sample_count_max < delay_time) {
return;
}
sample_count = delay_time;
input = &buffer[(output - buffer.data() + sample_count) % (sample_count_max + 1)];
}
Common::FixedPoint<50, 14> Tick(const Common::FixedPoint<50, 14> sample) {
Write(sample);
auto out_sample{Read()};
output++;
if (output >= buffer_end) {
output = buffer.data();
}
return out_sample;
}
Common::FixedPoint<50, 14> Read() const {
return *output;
}
void Write(const Common::FixedPoint<50, 14> sample) {
*(input++) = sample;
if (input >= buffer_end) {
input = buffer.data();
}
}
Common::FixedPoint<50, 14> TapOut(const s32 index) const {
auto out{input - (index + 1)};
if (out < buffer.data()) {
out += sample_count;
}
return *out;
}
s32 sample_count{};
s32 sample_count_max{};
std::vector<Common::FixedPoint<50, 14>> buffer{};
Common::FixedPoint<50, 14>* buffer_end;
Common::FixedPoint<50, 14>* input{};
Common::FixedPoint<50, 14>* output{};
Common::FixedPoint<50, 14> decay{};
};
struct State {
ReverbDelayLine pre_delay_line;
ReverbDelayLine center_delay_line;
std::array<s32, MaxDelayTaps> early_delay_times;
std::array<Common::FixedPoint<50, 14>, MaxDelayTaps> early_gains;
s32 pre_delay_time;
std::array<ReverbDelayLine, MaxDelayLines> decay_delay_lines;
std::array<ReverbDelayLine, MaxDelayLines> fdn_delay_lines;
std::array<Common::FixedPoint<50, 14>, MaxDelayLines> hf_decay_gain;
std::array<Common::FixedPoint<50, 14>, MaxDelayLines> hf_decay_prev_gain;
std::array<Common::FixedPoint<50, 14>, MaxDelayLines> prev_feedback_output;
};
static_assert(sizeof(State) <= sizeof(EffectInfoBase::State),
"ReverbInfo::State is too large!");
/**
* Update the info with new parameters, version 1.
*
* @param error_info - Used to write call result code.
* @param in_params - New parameters to update the info with.
* @param pool_mapper - Pool for mapping buffers.
*/
void Update(BehaviorInfo::ErrorInfo& error_info, const InParameterVersion1& in_params,
const PoolMapper& pool_mapper) override;
/**
* Update the info with new parameters, version 2.
*
* @param error_info - Used to write call result code.
* @param in_params - New parameters to update the info with.
* @param pool_mapper - Pool for mapping buffers.
*/
void Update(BehaviorInfo::ErrorInfo& error_info, const InParameterVersion2& in_params,
const PoolMapper& pool_mapper) override;
/**
* Update the info after command generation. Usually only changes its state.
*/
void UpdateForCommandGeneration() override;
/**
* Initialize a new result state. Version 2 only, unused.
*
* @param result_state - Result state to initialize.
*/
void InitializeResultState(EffectResultState& result_state) override;
/**
* Update the host-side state with the ADSP-side state. Version 2 only, unused.
*
* @param cpu_state - Host-side result state to update.
* @param dsp_state - AudioRenderer-side result state to update from.
*/
void UpdateResultState(EffectResultState& cpu_state, EffectResultState& dsp_state) override;
/**
* Get a workbuffer assigned to this effect with the given index.
*
* @param index - Workbuffer index.
* @return Address of the buffer.
*/
CpuAddr GetWorkbuffer(s32 index) override;
};
} // namespace AudioCore::AudioRenderer
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