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// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#include "audio_core/renderer/adsp/command_list_processor.h"
#include "audio_core/renderer/command/effect/biquad_filter.h"
#include "audio_core/renderer/command/effect/multi_tap_biquad_filter.h"
namespace AudioCore::AudioRenderer {
void MultiTapBiquadFilterCommand::Dump([[maybe_unused]] const ADSP::CommandListProcessor& processor,
std::string& string) {
string += fmt::format(
"MultiTapBiquadFilterCommand\n\tinput {:02X}\n\toutput {:02X}\n\tneeds_init ({}, {})\n",
input, output, needs_init[0], needs_init[1]);
}
void MultiTapBiquadFilterCommand::Process(const ADSP::CommandListProcessor& processor) {
if (filter_tap_count > MaxBiquadFilters) {
LOG_ERROR(Service_Audio, "Too many filter taps! {}", filter_tap_count);
filter_tap_count = MaxBiquadFilters;
}
auto input_buffer{
processor.mix_buffers.subspan(input * processor.sample_count, processor.sample_count)};
auto output_buffer{
processor.mix_buffers.subspan(output * processor.sample_count, processor.sample_count)};
// TODO: Fix this, currently just applies the filter to the input twice,
// and doesn't chain the biquads together at all.
for (u32 i = 0; i < filter_tap_count; i++) {
auto state{reinterpret_cast<VoiceState::BiquadFilterState*>(states[i])};
if (needs_init[i]) {
*state = {};
}
ApplyBiquadFilterFloat(output_buffer, input_buffer, biquads[i].b, biquads[i].a, *state,
processor.sample_count);
}
}
bool MultiTapBiquadFilterCommand::Verify(const ADSP::CommandListProcessor& processor) {
return true;
}
} // namespace AudioCore::AudioRenderer
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