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Diffstat (limited to '')
-rw-r--r-- | src/audio_core/renderer/command/effect/biquad_filter.h | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/src/audio_core/renderer/command/effect/biquad_filter.h b/src/audio_core/renderer/command/effect/biquad_filter.h new file mode 100644 index 000000000..4c9c42d29 --- /dev/null +++ b/src/audio_core/renderer/command/effect/biquad_filter.h @@ -0,0 +1,74 @@ +// 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 |