1 files changed, 123 insertions, 0 deletions
diff --git a/src/audio_core/renderer/effect/aux_.h b/src/audio_core/renderer/effect/aux_.h
new file mode 100644
index 000000000..4d3d9e3d9
--- /dev/null
+++ b/src/audio_core/renderer/effect/aux_.h
@@ -0,0 +1,123 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <array>
+
+#include "audio_core/common/common.h"
+#include "audio_core/renderer/effect/effect_info_base.h"
+#include "common/common_types.h"
+
+namespace AudioCore::AudioRenderer {
+/**
+ * Auxiliary Buffer used for Aux commands.
+ * Send and return buffers are available (names from the game's perspective).
+ * Send is read by the host, containing a buffer of samples to be used for whatever purpose.
+ * Return is written by the host, writing a mix buffer back to the game.
+ * This allows the game to use pre-processed samples skipping the other render processing,
+ * and to examine or modify what the audio renderer has generated.
+ */
+class AuxInfo : public EffectInfoBase {
+public:
+    struct ParameterVersion1 {
+        /* 0x00 */ std::array<s8, MaxMixBuffers> inputs;
+        /* 0x18 */ std::array<s8, MaxMixBuffers> outputs;
+        /* 0x30 */ u32 mix_buffer_count;
+        /* 0x34 */ u32 sample_rate;
+        /* 0x38 */ u32 count_max;
+        /* 0x3C */ u32 mix_buffer_count_max;
+        /* 0x40 */ CpuAddr send_buffer_info_address;
+        /* 0x48 */ CpuAddr send_buffer_address;
+        /* 0x50 */ CpuAddr return_buffer_info_address;
+        /* 0x58 */ CpuAddr return_buffer_address;
+        /* 0x60 */ u32 mix_buffer_sample_size;
+        /* 0x64 */ u32 sample_count;
+        /* 0x68 */ u32 mix_buffer_sample_count;
+    };
+    static_assert(sizeof(ParameterVersion1) <= sizeof(EffectInfoBase::InParameterVersion1),
+                  "AuxInfo::ParameterVersion1 has the wrong size!");
+
+    struct ParameterVersion2 {
+        /* 0x00 */ std::array<s8, MaxMixBuffers> inputs;
+        /* 0x18 */ std::array<s8, MaxMixBuffers> outputs;
+        /* 0x30 */ u32 mix_buffer_count;
+        /* 0x34 */ u32 sample_rate;
+        /* 0x38 */ u32 count_max;
+        /* 0x3C */ u32 mix_buffer_count_max;
+        /* 0x40 */ CpuAddr send_buffer_info_address;
+        /* 0x48 */ CpuAddr send_buffer_address;
+        /* 0x50 */ CpuAddr return_buffer_info_address;
+        /* 0x58 */ CpuAddr return_buffer_address;
+        /* 0x60 */ u32 mix_buffer_sample_size;
+        /* 0x64 */ u32 sample_count;
+        /* 0x68 */ u32 mix_buffer_sample_count;
+    };
+    static_assert(sizeof(ParameterVersion2) <= sizeof(EffectInfoBase::InParameterVersion2),
+                  "AuxInfo::ParameterVersion2 has the wrong size!");
+
+    struct AuxInfoDsp {
+        /* 0x00 */ u32 read_offset;
+        /* 0x04 */ u32 write_offset;
+        /* 0x08 */ u32 lost_sample_count;
+        /* 0x0C */ u32 total_sample_count;
+        /* 0x10 */ char unk10[0x30];
+    };
+    static_assert(sizeof(AuxInfoDsp) == 0x40, "AuxInfo::AuxInfoDsp has the wrong size!");
+
+    struct AuxBufferInfo {
+        /* 0x00 */ AuxInfoDsp cpu_info;
+        /* 0x40 */ AuxInfoDsp dsp_info;
+    };
+    static_assert(sizeof(AuxBufferInfo) == 0x80, "AuxInfo::AuxBufferInfo has the wrong size!");
+
+    /**
+     * 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