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-rw-r--r--src/audio_core/renderer/effect/reverb.h190
1 files changed, 190 insertions, 0 deletions
diff --git a/src/audio_core/renderer/effect/reverb.h b/src/audio_core/renderer/effect/reverb.h
new file mode 100644
index 000000000..b4df9f6ef
--- /dev/null
+++ b/src/audio_core/renderer/effect/reverb.h
@@ -0,0 +1,190 @@
+// 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() {
+ 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) {
+ 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