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// 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::Renderer {
/**
* Represents a mixing node, can be connected to a previous and next destination forming a chain
* that a certain mix buffer will pass through to output.
*/
class SplitterDestinationData {
public:
struct InParameter {
/* 0x00 */ u32 magic; // 'SNDD'
/* 0x04 */ s32 id;
/* 0x08 */ std::array<f32, MaxMixBuffers> mix_volumes;
/* 0x68 */ u32 mix_id;
/* 0x6C */ bool in_use;
};
static_assert(sizeof(InParameter) == 0x70,
"SplitterDestinationData::InParameter has the wrong size!");
SplitterDestinationData(s32 id);
/**
* Reset the mix volumes for this destination.
*/
void ClearMixVolume();
/**
* Get the id of this destination.
*
* @return Id for this destination.
*/
s32 GetId() const;
/**
* Check if this destination is correctly configured.
*
* @return True if configured, otherwise false.
*/
bool IsConfigured() const;
/**
* Get the mix id for this destination.
*
* @return Mix id for this destination.
*/
s32 GetMixId() const;
/**
* Get the current mix volume of a given index in this destination.
*
* @param index - Mix buffer index to get the volume for.
* @return Current volume of the specified mix.
*/
f32 GetMixVolume(u32 index) const;
/**
* Get the current mix volumes for all mix buffers in this destination.
*
* @return Span of current mix buffer volumes.
*/
std::span<f32> GetMixVolume();
/**
* Get the previous mix volume of a given index in this destination.
*
* @param index - Mix buffer index to get the volume for.
* @return Previous volume of the specified mix.
*/
f32 GetMixVolumePrev(u32 index) const;
/**
* Get the previous mix volumes for all mix buffers in this destination.
*
* @return Span of previous mix buffer volumes.
*/
std::span<f32> GetMixVolumePrev();
/**
* Update this destination.
*
* @param params - Input parameters to update the destination.
*/
void Update(const InParameter& params);
/**
* Mark this destination as needing its volumes updated.
*/
void MarkAsNeedToUpdateInternalState();
/**
* Copy current volumes to previous if an update is required.
*/
void UpdateInternalState();
/**
* Get the next destination in the mix chain.
*
* @return The next splitter destination, may be nullptr if this is the last in the chain.
*/
SplitterDestinationData* GetNext() const;
/**
* Set the next destination in the mix chain.
*
* @param next - Destination this one is to be connected to.
*/
void SetNext(SplitterDestinationData* next);
private:
/// Id of this destination
const s32 id;
/// Mix id this destination represents
s32 destination_id{UnusedMixId};
/// Current mix volumes
std::array<f32, MaxMixBuffers> mix_volumes{0.0f};
/// Previous mix volumes
std::array<f32, MaxMixBuffers> prev_mix_volumes{0.0f};
/// Next destination in the mix chain
SplitterDestinationData* next{};
/// Is this destination in use?
bool in_use{};
/// Does this destination need its volumes updated?
bool need_update{};
};
} // namespace AudioCore::Renderer
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