1 files changed, 75 insertions, 0 deletions
diff --git a/src/audio_core/renderer/effect/effect_context.h b/src/audio_core/renderer/effect/effect_context.h
new file mode 100644
index 000000000..85955bd9c
--- /dev/null
+++ b/src/audio_core/renderer/effect/effect_context.h
@@ -0,0 +1,75 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <span>
+
+#include "audio_core/renderer/effect/effect_info_base.h"
+#include "audio_core/renderer/effect/effect_result_state.h"
+#include "common/common_types.h"
+
+namespace AudioCore::AudioRenderer {
+
+class EffectContext {
+public:
+    /**
+     * Initialize the effect context
+     * @param effect_infos List of effect infos for this context
+     * @param effect_count The number of effects in the list
+     * @param result_states_cpu The workbuffer of result states for the CPU for this context
+     * @param result_states_dsp The workbuffer of result states for the DSP for this context
+     * @param state_count The number of result states
+     */
+    void Initialize(std::span<EffectInfoBase> effect_infos_, const u32 effect_count_,
+                    std::span<EffectResultState> result_states_cpu_,
+                    std::span<EffectResultState> result_states_dsp_, const size_t dsp_state_count);
+
+    /**
+     * Get the EffectInfo for a given index
+     * @param index Which effect to return
+     * @return Pointer to the effect
+     */
+    EffectInfoBase& GetInfo(const u32 index);
+
+    /**
+     * Get the CPU result state for a given index
+     * @param index Which result to return
+     * @return Pointer to the effect result state
+     */
+    EffectResultState& GetResultState(const u32 index);
+
+    /**
+     * Get the DSP result state for a given index
+     * @param index Which result to return
+     * @return Pointer to the effect result state
+     */
+    EffectResultState& GetDspSharedResultState(const u32 index);
+
+    /**
+     * Get the number of effects in this context
+     * @return The number of effects
+     */
+    u32 GetCount() const;
+
+    /**
+     * Update the CPU and DSP result states for all effects
+     */
+    void UpdateStateByDspShared();
+
+private:
+    /// Workbuffer for all of the effects
+    std::span<EffectInfoBase> effect_infos{};
+    /// Number of effects in the workbuffer
+    u32 effect_count{};
+    /// Workbuffer of states for all effects, kept host-side and not directly modified, dsp states
+    /// are copied here on the next render frame
+    std::span<EffectResultState> result_states_cpu{};
+    /// Workbuffer of states for all effects, used by the AudioRenderer to track effect state
+    /// between calls
+    std::span<EffectResultState> result_states_dsp{};
+    /// Number of result states in the workbuffers
+    size_t dsp_state_count{};
+};
+
+} // namespace AudioCore::AudioRenderer