40 lines
1.2 KiB
C++
40 lines
1.2 KiB
C++
#ifndef UHJFILTER_H
|
|
#define UHJFILTER_H
|
|
|
|
#include <array>
|
|
|
|
#include "alcmain.h"
|
|
#include "almalloc.h"
|
|
|
|
|
|
struct Uhj2Encoder {
|
|
/* A particular property of the filter allows it to cover nearly twice its
|
|
* length, so the filter size is also the effective delay (despite being
|
|
* center-aligned).
|
|
*/
|
|
constexpr static size_t sFilterSize{128};
|
|
|
|
/* Delays for the unfiltered signal. */
|
|
alignas(16) std::array<float,sFilterSize> mMidDelay{};
|
|
alignas(16) std::array<float,sFilterSize> mSideDelay{};
|
|
|
|
alignas(16) std::array<float,BUFFERSIZE+sFilterSize> mMid{};
|
|
alignas(16) std::array<float,BUFFERSIZE+sFilterSize> mSide{};
|
|
|
|
/* History for the FIR filter. */
|
|
alignas(16) std::array<float,sFilterSize*2 - 1> mSideHistory{};
|
|
|
|
alignas(16) std::array<float,BUFFERSIZE + sFilterSize*2> mTemp{};
|
|
|
|
/**
|
|
* Encodes a 2-channel UHJ (stereo-compatible) signal from a B-Format input
|
|
* signal. The input must use FuMa channel ordering and scaling.
|
|
*/
|
|
void encode(FloatBufferLine &LeftOut, FloatBufferLine &RightOut,
|
|
const FloatBufferLine *InSamples, const size_t SamplesToDo);
|
|
|
|
DEF_NEWDEL(Uhj2Encoder)
|
|
};
|
|
|
|
#endif /* UHJFILTER_H */
|