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// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#pragma once
#include <string>
#include "audio_core/renderer/command/icommand.h"
#include "audio_core/renderer/voice/voice_info.h"
#include "audio_core/renderer/voice/voice_state.h"
#include "common/common_types.h"
namespace AudioCore::AudioRenderer {
namespace ADSP {
class CommandListProcessor;
}
/**
* AudioRenderer command for applying a biquad filter to the input mix buffer, saving the results to
* the output mix buffer.
*/
struct BiquadFilterCommand : ICommand {
/**
* Print this command's information to a string.
*
* @param processor - The CommandListProcessor processing this command.
* @param string - The string to print into.
*/
void Dump(const ADSP::CommandListProcessor& processor, std::string& string) override;
/**
* Process this command.
*
* @param processor - The CommandListProcessor processing this command.
*/
void Process(const ADSP::CommandListProcessor& processor) override;
/**
* Verify this command's data is valid.
*
* @param processor - The CommandListProcessor processing this command.
* @return True if the command is valid, otherwise false.
*/
bool Verify(const ADSP::CommandListProcessor& processor) override;
/// Input mix buffer index
s16 input;
/// Output mix buffer index
s16 output;
/// Input parameters for biquad
VoiceInfo::BiquadFilterParameter biquad;
/// Biquad state, updated each call
CpuAddr state;
/// If true, reset the state
bool needs_init;
/// If true, use float processing rather than int
bool use_float_processing;
};
/**
* Biquad filter float implementation.
*
* @param output - Output container for filtered samples.
* @param input - Input container for samples to be filtered.
* @param b - Feedforward coefficients.
* @param a - Feedback coefficients.
* @param state - State to track previous samples.
* @param sample_count - Number of samples to process.
*/
void ApplyBiquadFilterFloat(std::span<s32> output, std::span<const s32> input,
std::array<s16, 3>& b, std::array<s16, 2>& a,
VoiceState::BiquadFilterState& state, const u32 sample_count);
} // namespace AudioCore::AudioRenderer
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