1 files changed, 114 insertions, 0 deletions

diff --git a/src/audio_core/effect_context.h b/src/audio_core/effect_context.h
new file mode 100644
index 000000000..09aedf385
--- /dev/null
+++ b/src/audio_core/effect_context.h
@@ -0,0 +1,114 @@
+// Copyright 2020 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <array>
+#include <memory>
+#include <vector>
+#include "audio_core/common.h"
+#include "common/common_funcs.h"
+#include "common/common_types.h"
+#include "common/swap.h"
+
+namespace AudioCore {
+enum class EffectType : u8 {
+    Invalid = 0,
+    BufferMixer = 1,
+    Aux = 2,
+    Delay = 3,
+    Reverb = 4,
+    I3dl2Reverb = 5,
+    BiquadFilter = 6,
+};
+
+enum class UsageStatus : u8 {
+    Invalid = 0,
+    New = 1,
+    Initialized = 2,
+    Used = 3,
+    Removed = 4,
+};
+
+struct BufferMixerParams {
+    std::array<s8, AudioCommon::MAX_MIX_BUFFERS> input{};
+    std::array<s8, AudioCommon::MAX_MIX_BUFFERS> output{};
+    std::array<float_le, AudioCommon::MAX_MIX_BUFFERS> volume{};
+    s32_le count{};
+};
+static_assert(sizeof(BufferMixerParams) == 0x94, "BufferMixerParams is an invalid size");
+
+struct AuxInfo {
+    std::array<s8, AudioCommon::MAX_MIX_BUFFERS> input_mix_buffers{};
+    std::array<s8, AudioCommon::MAX_MIX_BUFFERS> output_mix_buffers{};
+    u32_le count{};
+    s32_le sample_rate{};
+    s32_le sample_count{};
+    s32_le mix_buffer_count{};
+    u64_le send_buffer_info{};
+    u64_le send_buffer_base{};
+
+    u64_le return_buffer_info{};
+    u64_le return_buffer_base{};
+};
+static_assert(sizeof(AuxInfo) == 0x60, "AuxInfo is an invalid size");
+
+class EffectInfo {
+public:
+    struct InParams {
+        EffectType type{};
+        u8 is_new{};
+        u8 is_enabled{};
+        INSERT_PADDING_BYTES(1);
+        s32_le mix_id{};
+        u64_le buffer_address{};
+        u64_le buffer_size{};
+        s32_le priority{};
+        INSERT_PADDING_BYTES(4);
+        union {
+            std::array<u8, 0xa0> raw;
+        };
+    };
+    static_assert(sizeof(EffectInfo::InParams) == 0xc0, "InParams is an invalid size");
+
+    struct OutParams {
+        UsageStatus status{};
+        INSERT_PADDING_BYTES(15);
+    };
+    static_assert(sizeof(EffectInfo::OutParams) == 0x10, "OutParams is an invalid size");
+};
+
+class EffectBase {
+public:
+    EffectBase();
+    ~EffectBase();
+
+    virtual void Update(EffectInfo::InParams& in_params) = 0;
+    UsageStatus GetUsage() const;
+
+protected:
+    UsageStatus usage{UsageStatus::Invalid};
+};
+
+class EffectStubbed : public EffectBase {
+public:
+    explicit EffectStubbed();
+    ~EffectStubbed();
+
+    void Update(EffectInfo::InParams& in_params) override;
+};
+
+class EffectContext {
+public:
+    explicit EffectContext(std::size_t effect_count);
+    ~EffectContext();
+
+    std::size_t GetCount() const;
+    EffectBase* GetInfo(std::size_t i);
+
+private:
+    std::size_t effect_count{};
+    std::vector<std::unique_ptr<EffectBase>> effects;
+};
+} // namespace AudioCore