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#ifndef CONVERTER_H
#define CONVERTER_H
#include <cstddef>
#include <memory>
#include "AL/al.h"
#include "alcmain.h"
#include "almalloc.h"
#include "alnumeric.h"
#include "alu.h"
struct SampleConverter {
DevFmtType mSrcType{};
DevFmtType mDstType{};
ALsizei mSrcTypeSize{};
ALsizei mDstTypeSize{};
ALint mSrcPrepCount{};
ALsizei mFracOffset{};
ALsizei mIncrement{};
InterpState mState{};
ResamplerFunc mResample{};
alignas(16) ALfloat mSrcSamples[BUFFERSIZE]{};
alignas(16) ALfloat mDstSamples[BUFFERSIZE]{};
struct ChanSamples {
alignas(16) ALfloat PrevSamples[MAX_RESAMPLE_PADDING*2];
};
al::FlexArray<ChanSamples> mChan;
SampleConverter(size_t numchans) : mChan{numchans} { }
SampleConverter(const SampleConverter&) = delete;
SampleConverter& operator=(const SampleConverter&) = delete;
ALsizei convert(const ALvoid **src, ALsizei *srcframes, ALvoid *dst, ALsizei dstframes);
ALsizei availableOut(ALsizei srcframes) const;
static constexpr size_t Sizeof(size_t length) noexcept
{
return maxz(sizeof(SampleConverter),
al::FlexArray<ChanSamples>::Sizeof(length, offsetof(SampleConverter, mChan)));
}
DEF_PLACE_NEWDEL()
};
using SampleConverterPtr = std::unique_ptr<SampleConverter>;
SampleConverterPtr CreateSampleConverter(DevFmtType srcType, DevFmtType dstType, ALsizei numchans,
ALsizei srcRate, ALsizei dstRate, Resampler resampler);
struct ChannelConverter {
DevFmtType mSrcType;
DevFmtChannels mSrcChans;
DevFmtChannels mDstChans;
ChannelConverter(DevFmtType srctype, DevFmtChannels srcchans, DevFmtChannels dstchans)
: mSrcType(srctype), mSrcChans(srcchans), mDstChans(dstchans)
{ }
void convert(const ALvoid *src, ALfloat *dst, ALsizei frames) const;
DEF_NEWDEL(ChannelConverter)
};
using ChannelConverterPtr = std::unique_ptr<ChannelConverter>;
ChannelConverterPtr CreateChannelConverter(DevFmtType srcType, DevFmtChannels srcChans,
DevFmtChannels dstChans);
#endif /* CONVERTER_H */
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