84 lines
2.2 KiB
C++
84 lines
2.2 KiB
C++
// Copyright 2016 Citra Emulator Project
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#include <array>
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#include <memory>
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#include "audio_core/hle/dsp.h"
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#include "audio_core/hle/pipe.h"
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#include "audio_core/hle/source.h"
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#include "audio_core/sink.h"
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namespace DSP {
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namespace HLE {
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std::array<SharedMemory, 2> g_regions;
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static size_t CurrentRegionIndex() {
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// The region with the higher frame counter is chosen unless there is wraparound.
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// This function only returns a 0 or 1.
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if (g_regions[0].frame_counter == 0xFFFFu && g_regions[1].frame_counter != 0xFFFEu) {
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// Wraparound has occured.
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return 1;
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}
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if (g_regions[1].frame_counter == 0xFFFFu && g_regions[0].frame_counter != 0xFFFEu) {
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// Wraparound has occured.
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return 0;
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}
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return (g_regions[0].frame_counter > g_regions[1].frame_counter) ? 0 : 1;
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}
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static SharedMemory& ReadRegion() {
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return g_regions[CurrentRegionIndex()];
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}
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static SharedMemory& WriteRegion() {
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return g_regions[1 - CurrentRegionIndex()];
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}
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static std::array<Source, num_sources> sources = {
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Source(0), Source(1), Source(2), Source(3), Source(4), Source(5),
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Source(6), Source(7), Source(8), Source(9), Source(10), Source(11),
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Source(12), Source(13), Source(14), Source(15), Source(16), Source(17),
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Source(18), Source(19), Source(20), Source(21), Source(22), Source(23)
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};
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static std::unique_ptr<AudioCore::Sink> sink;
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void Init() {
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DSP::HLE::ResetPipes();
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for (auto& source : sources) {
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source.Reset();
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}
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}
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void Shutdown() {
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}
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bool Tick() {
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SharedMemory& read = ReadRegion();
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SharedMemory& write = WriteRegion();
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std::array<QuadFrame32, 3> intermediate_mixes = {};
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for (size_t i = 0; i < num_sources; i++) {
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write.source_statuses.status[i] = sources[i].Tick(read.source_configurations.config[i], read.adpcm_coefficients.coeff[i]);
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for (size_t mix = 0; mix < 3; mix++) {
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sources[i].MixInto(intermediate_mixes[mix], mix);
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}
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}
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return true;
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}
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void SetSink(std::unique_ptr<AudioCore::Sink> sink_) {
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sink = std::move(sink_);
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}
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} // namespace HLE
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} // namespace DSP
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