Alc/converter.h

   1 #ifndef CONVERTER_H
   2 #define CONVERTER_H
   3
   4 #include <memory>
   5
   6 #include "alMain.h"
   7 #include "alu.h"
   8 #include "almalloc.h"
   9
  10 struct SampleConverter {
  11     DevFmtType mSrcType{};
  12     DevFmtType mDstType{};
  13     ALsizei mNumChannels{};
  14     ALsizei mSrcTypeSize{};
  15     ALsizei mDstTypeSize{};
  16
  17     ALint mSrcPrepCount{};
  18
  19     ALsizei mFracOffset{};
  20     ALsizei mIncrement{};
  21     InterpState mState{};
  22     ResamplerFunc mResample{};
  23
  24     alignas(16) ALfloat mSrcSamples[BUFFERSIZE]{};
  25     alignas(16) ALfloat mDstSamples[BUFFERSIZE]{};
  26
  27     struct {
  28         alignas(16) ALfloat PrevSamples[MAX_RESAMPLE_PADDING*2];
  29     } mChan[];
  30
  31     ALsizei convert(const ALvoid **src, ALsizei *srcframes, ALvoid *dst, ALsizei dstframes);
  32     ALsizei availableOut(ALsizei srcframes) const;
  33
  34     DEF_PLACE_NEWDEL()
  35 };
  36 using SampleConverterPtr = std::unique_ptr<SampleConverter>;
  37
  38 SampleConverterPtr CreateSampleConverter(DevFmtType srcType, DevFmtType dstType, ALsizei numchans,
  39     ALsizei srcRate, ALsizei dstRate, Resampler resampler);
  40
  41
  42 struct ChannelConverter {
  43     DevFmtType mSrcType;
  44     DevFmtChannels mSrcChans;
  45     DevFmtChannels mDstChans;
  46
  47     ChannelConverter(DevFmtType srctype, DevFmtChannels srcchans, DevFmtChannels dstchans)
  48       : mSrcType(srctype), mSrcChans(srcchans), mDstChans(dstchans)
  49     { }
  50
  51     void convert(const ALvoid *src, ALfloat *dst, ALsizei frames) const;
  52
  53     DEF_NEWDEL(ChannelConverter)
  54 };
  55 using ChannelConverterPtr = std::unique_ptr<ChannelConverter>;
  56
  57 ChannelConverterPtr CreateChannelConverter(DevFmtType srcType, DevFmtChannels srcChans,
  58     DevFmtChannels dstChans);
  59
  60 #endif /* CONVERTER_H */