mirror of
https://github.com/love2d/megasource.git
synced 2026-08-12 08:30:59 +02:00
Sasha Szpakowski
63 lines
2.0 KiB
C++
63 lines
2.0 KiB
C++
#ifndef CORE_BFORMATDEC_H
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#define CORE_BFORMATDEC_H
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#include <array>
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#include <cstddef>
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#include <memory>
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#include <variant>
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#include <vector>
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#include "alspan.h"
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#include "ambidefs.h"
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#include "bufferline.h"
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#include "devformat.h"
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#include "filters/splitter.h"
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#include "front_stablizer.h"
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#include "opthelpers.h"
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using ChannelDec = std::array<float,MaxAmbiChannels>;
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class SIMDALIGN BFormatDec {
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static constexpr size_t sHFBand{0};
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static constexpr size_t sLFBand{1};
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static constexpr size_t sNumBands{2};
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struct ChannelDecoderSingle {
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std::array<float,MaxOutputChannels> mGains{};
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};
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struct ChannelDecoderDual {
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BandSplitter mXOver;
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std::array<std::array<float,MaxOutputChannels>,sNumBands> mGains{};
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};
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alignas(16) std::array<FloatBufferLine,2> mSamples{};
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const std::unique_ptr<FrontStablizer> mStablizer;
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std::variant<std::vector<ChannelDecoderSingle>,std::vector<ChannelDecoderDual>> mChannelDec;
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public:
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BFormatDec(const size_t inchans, const al::span<const ChannelDec> coeffs,
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const al::span<const ChannelDec> coeffslf, const float xover_f0norm,
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std::unique_ptr<FrontStablizer> stablizer);
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[[nodiscard]] auto hasStablizer() const noexcept -> bool { return mStablizer != nullptr; }
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/* Decodes the ambisonic input to the given output channels. */
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void process(const al::span<FloatBufferLine> OutBuffer,
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const al::span<const FloatBufferLine> InSamples, const size_t SamplesToDo);
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/* Decodes the ambisonic input to the given output channels with stablization. */
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void processStablize(const al::span<FloatBufferLine> OutBuffer,
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const al::span<const FloatBufferLine> InSamples, const size_t lidx, const size_t ridx,
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const size_t cidx, const size_t SamplesToDo);
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static std::unique_ptr<BFormatDec> Create(const size_t inchans,
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const al::span<const ChannelDec> coeffs, const al::span<const ChannelDec> coeffslf,
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const float xover_f0norm, std::unique_ptr<FrontStablizer> stablizer);
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};
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#endif /* CORE_BFORMATDEC_H */
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