1 files changed, 124 insertions, 0 deletions
diff --git a/src/audio_core/renderer/mix/mix_info.h b/src/audio_core/renderer/mix/mix_info.h
new file mode 100644
index 000000000..b5fa4c0c7
--- /dev/null
+++ b/src/audio_core/renderer/mix/mix_info.h
@@ -0,0 +1,124 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <array>
+#include <span>
+
+#include "audio_core/common/common.h"
+#include "common/common_types.h"
+
+namespace AudioCore::AudioRenderer {
+class EdgeMatrix;
+class SplitterContext;
+class EffectContext;
+class BehaviorInfo;
+
+/**
+ * A single mix, which may feed through other mixes in a chain until reaching the final output mix.
+ */
+class MixInfo {
+public:
+    struct InParameter {
+        /* 0x000 */ f32 volume;
+        /* 0x004 */ u32 sample_rate;
+        /* 0x008 */ u32 buffer_count;
+        /* 0x00C */ bool in_use;
+        /* 0x00D */ bool is_dirty;
+        /* 0x010 */ s32 mix_id;
+        /* 0x014 */ u32 effect_count;
+        /* 0x018 */ s32 node_id;
+        /* 0x01C */ char unk01C[0x8];
+        /* 0x024 */ std::array<std::array<f32, MaxMixBuffers>, MaxMixBuffers> mix_volumes;
+        /* 0x924 */ s32 dest_mix_id;
+        /* 0x928 */ s32 dest_splitter_id;
+        /* 0x92C */ char unk92C[0x4];
+    };
+    static_assert(sizeof(InParameter) == 0x930, "MixInfo::InParameter has the wrong size!");
+
+    struct InDirtyParameter {
+        /* 0x00 */ u32 magic;
+        /* 0x04 */ s32 count;
+        /* 0x08 */ char unk08[0x18];
+    };
+    static_assert(sizeof(InDirtyParameter) == 0x20,
+                  "MixInfo::InDirtyParameter has the wrong size!");
+
+    MixInfo(std::span<s32> effect_order_buffer, s32 effect_count, BehaviorInfo& behavior);
+
+    /**
+     * Clean up the mix, resetting it to a default state.
+     */
+    void Cleanup();
+
+    /**
+     * Clear the effect process order for all effects in this mix.
+     */
+    void ClearEffectProcessingOrder();
+
+    /**
+     * Update the mix according to the given parameters.
+     *
+     * @param edge_matrix      - Updated with new splitter node connections, if supported.
+     * @param in_params        - Input parameters.
+     * @param effect_context   - Used to update the effect orderings.
+     * @param splitter_context - Used to update the mix graph if supported.
+     * @param behavior        - Used for checking which features are supported.
+     * @return True if the mix was updated and a sort is required, otherwise false.
+     */
+    bool Update(EdgeMatrix& edge_matrix, const InParameter& in_params,
+                EffectContext& effect_context, SplitterContext& splitter_context,
+                const BehaviorInfo& behavior);
+
+    /**
+     * Update the mix's connection in the node graph according to the given parameters.
+     *
+     * @param edge_matrix      - Updated with new splitter node connections, if supported.
+     * @param in_params        - Input parameters.
+     * @param splitter_context - Used to update the mix graph if supported.
+     * @return True if the mix was updated and a sort is required, otherwise false.
+     */
+    bool UpdateConnection(EdgeMatrix& edge_matrix, const InParameter& in_params,
+                          SplitterContext& splitter_context);
+
+    /**
+     * Check if this mix is connected to any other.
+     *
+     * @return True if the mix has a connection, otherwise false.
+     */
+    bool HasAnyConnection() const;
+
+    /// Volume of this mix
+    f32 volume{};
+    /// Sample rate of this mix
+    u32 sample_rate{};
+    /// Number of buffers in this mix
+    s16 buffer_count{};
+    /// Is this mix in use?
+    bool in_use{};
+    /// Is this mix enabled?
+    bool enabled{};
+    /// Id of this mix
+    s32 mix_id{UnusedMixId};
+    /// Node id of this mix
+    s32 node_id{};
+    /// Buffer offset for this mix
+    s16 buffer_offset{};
+    /// Distance to the final mix
+    s32 distance_from_final_mix{InvalidDistanceFromFinalMix};
+    /// Array of effect orderings of all effects in this mix
+    std::span<s32> effect_order_buffer;
+    /// Number of effects in this mix
+    const s32 effect_count;
+    /// Id for next mix in the chain
+    s32 dst_mix_id{UnusedMixId};
+    /// Mixing volumes for this mix used when this mix is chained with another
+    std::array<std::array<f32, MaxMixBuffers>, MaxMixBuffers> mix_volumes{};
+    /// Id for next mix in the graph when splitter is used
+    s32 dst_splitter_id{UnusedSplitterId};
+    /// Is a longer pre-delay time supported for the reverb effect?
+    const bool long_size_pre_delay_supported;
+};
+
+} // namespace AudioCore::AudioRenderer