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