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#ifndef CORE_CONVERTER_H
#define CORE_CONVERTER_H
#include <chrono>
#include <cstddef>
#include <memory>
#include "almalloc.h"
#include "devformat.h"
#include "mixer/defs.h"
using uint = unsigned int;
struct SampleConverter {
DevFmtType mSrcType{};
DevFmtType mDstType{};
uint mSrcTypeSize{};
uint mDstTypeSize{};
uint mSrcPrepCount{};
uint mFracOffset{};
uint mIncrement{};
InterpState mState{};
ResamplerFunc mResample{};
alignas(16) float mSrcSamples[BufferLineSize]{};
alignas(16) float mDstSamples[BufferLineSize]{};
struct ChanSamples {
alignas(16) float PrevSamples[MaxResamplerPadding];
};
al::FlexArray<ChanSamples> mChan;
SampleConverter(size_t numchans) : mChan{numchans} { }
uint convert(const void **src, uint *srcframes, void *dst, uint dstframes);
uint availableOut(uint srcframes) const;
using SampleOffset = std::chrono::duration<int64_t, std::ratio<1,MixerFracOne>>;
SampleOffset currentInputDelay() const noexcept
{
const int64_t prep{mSrcPrepCount - MaxResamplerEdge};
return SampleOffset{(prep<<MixerFracBits) + mFracOffset};
}
DEF_FAM_NEWDEL(SampleConverter, mChan)
};
using SampleConverterPtr = std::unique_ptr<SampleConverter>;
SampleConverterPtr CreateSampleConverter(DevFmtType srcType, DevFmtType dstType, size_t numchans,
uint srcRate, uint dstRate, Resampler resampler);
struct ChannelConverter {
DevFmtType mSrcType{};
uint mSrcStep{};
uint mChanMask{};
DevFmtChannels mDstChans{};
bool is_active() const noexcept { return mChanMask != 0; }
void convert(const void *src, float *dst, uint frames) const;
};
#endif /* CORE_CONVERTER_H */
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