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56 lines
1.6 KiB
C++
56 lines
1.6 KiB
C++
#ifndef GUARD_LEERILY_DIMORAIC_MATHOM_PIMPS_OUT_4424
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#define GUARD_LEERILY_DIMORAIC_MATHOM_PIMPS_OUT_4424
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#pragma once
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#include "../channel.hpp"
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#include "../options.hpp"
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#include <memory>
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#include <span>
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#include <vector>
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class FfdshowDecoder
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{
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public:
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void Init(float rate);
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[[nodiscard]] std::span<const float> Decode(std::span<const float> in);
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[[nodiscard]] static constexpr unsigned GetBlockSize() noexcept { return 0; }
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[[nodiscard]] std::vector<Option> GetOptions();
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[[nodiscard]] static std::vector<Channel::E> GetChannels();
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[[nodiscard]] static constexpr uint32_t GetDelay() noexcept { return 0; }
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bool enable_lfe = true;
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float center_gain = 1;
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private:
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static float passive_lock(float x);
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void matrix_decode(const float *in, int k, int il,
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int ir, bool decode_rear,
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int dlbuflen,
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float l_fwr, float r_fwr,
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float lpr_fwr, float lmr_fwr,
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float *adapt_l_gain, float *adapt_r_gain,
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float *adapt_lpr_gain, float *adapt_lmr_gain,
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float *lf, float *rf, float *lr,
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float *rr, float *cf) const;
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float rate = -1;
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unsigned int dlbuflen;
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int cyc_pos;
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float l_fwr, r_fwr, lpr_fwr, lmr_fwr;
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std::vector<float> fwrbuf_l, fwrbuf_r;
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float adapt_l_gain, adapt_r_gain, adapt_lpr_gain, adapt_lmr_gain;
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std::vector<float> lf, rf, lr, rr, cf, cr;
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float LFE_buf[256];
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unsigned int lfe_pos;
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std::unique_ptr<float[]> filter_coefs_lfe;
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unsigned int len125;
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std::unique_ptr<float[]> calc_coefficients_125Hz_lowpass();
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std::vector<float> out_buf;
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};
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#endif
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