alc/buffer_storage.h

   1 #ifndef ALC_BUFFER_FORMATS_H
   2 #define ALC_BUFFER_FORMATS_H
   3
   4 #include "AL/al.h"
   5 #include "AL/alext.h"
   6
   7 #include "albyte.h"
   8 #include "inprogext.h"
   9 #include "vector.h"
  10
  11
  12 /* Storable formats */
  13 enum FmtType : unsigned char {
  14     FmtUByte,
  15     FmtShort,
  16     FmtFloat,
  17     FmtDouble,
  18     FmtMulaw,
  19     FmtAlaw,
  20 };
  21 enum FmtChannels : unsigned char {
  22     FmtMono,
  23     FmtStereo,
  24     FmtRear,
  25     FmtQuad,
  26     FmtX51, /* (WFX order) */
  27     FmtX61, /* (WFX order) */
  28     FmtX71, /* (WFX order) */
  29     FmtBFormat2D,
  30     FmtBFormat3D,
  31 };
  32
  33 enum class AmbiLayout : unsigned char {
  34     FuMa = AL_FUMA_SOFT,
  35     ACN = AL_ACN_SOFT,
  36 };
  37 enum class AmbiScaling : unsigned char {
  38     FuMa = AL_FUMA_SOFT,
  39     SN3D = AL_SN3D_SOFT,
  40     N3D = AL_N3D_SOFT,
  41 };
  42
  43 ALuint BytesFromFmt(FmtType type) noexcept;
  44 ALuint ChannelsFromFmt(FmtChannels chans, ALuint ambiorder) noexcept;
  45 inline ALuint FrameSizeFromFmt(FmtChannels chans, FmtType type, ALuint ambiorder) noexcept
  46 { return ChannelsFromFmt(chans, ambiorder) * BytesFromFmt(type); }
  47
  48
  49 struct BufferStorage {
  50     al::vector<al::byte,16> mData;
  51
  52     LPALBUFFERCALLBACKTYPESOFT mCallback{nullptr};
  53     void *mUserData{nullptr};
  54
  55     ALuint mSampleRate{0u};
  56     FmtChannels mChannels{};
  57     FmtType mType{};
  58     ALuint mSampleLen{0u};
  59
  60     AmbiLayout mAmbiLayout{AmbiLayout::FuMa};
  61     AmbiScaling mAmbiScaling{AmbiScaling::FuMa};
  62     ALuint mAmbiOrder{0u};
  63
  64     inline ALuint bytesFromFmt() const noexcept { return BytesFromFmt(mType); }
  65     inline ALuint channelsFromFmt() const noexcept
  66     { return ChannelsFromFmt(mChannels, mAmbiOrder); }
  67     inline ALuint frameSizeFromFmt() const noexcept { return channelsFromFmt() * bytesFromFmt(); }
  68
  69     inline bool isBFormat() const noexcept
  70     { return mChannels == FmtBFormat2D || mChannels == FmtBFormat3D; }
  71 };
  72
  73 #endif /* ALC_BUFFER_FORMATS_H */