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#ifndef ALC_BUFFER_STORAGE_H
#define ALC_BUFFER_STORAGE_H
#include <atomic>
#include "albyte.h"
using uint = unsigned int;
/* Storable formats */
enum FmtType : unsigned char {
FmtUByte,
FmtShort,
FmtFloat,
FmtDouble,
FmtMulaw,
FmtAlaw,
};
enum FmtChannels : unsigned char {
FmtMono,
FmtStereo,
FmtRear,
FmtQuad,
FmtX51, /* (WFX order) */
FmtX61, /* (WFX order) */
FmtX71, /* (WFX order) */
FmtBFormat2D,
FmtBFormat3D,
FmtUHJ2, /* 2-channel UHJ, aka "BHJ", stereo-compatible */
};
enum class AmbiLayout : unsigned char {
FuMa,
ACN,
};
enum class AmbiScaling : unsigned char {
FuMa,
SN3D,
N3D,
};
uint BytesFromFmt(FmtType type) noexcept;
uint ChannelsFromFmt(FmtChannels chans, uint ambiorder) noexcept;
inline uint FrameSizeFromFmt(FmtChannels chans, FmtType type, uint ambiorder) noexcept
{ return ChannelsFromFmt(chans, ambiorder) * BytesFromFmt(type); }
using CallbackType = int(*)(void*, void*, int);
struct BufferStorage {
CallbackType mCallback{nullptr};
void *mUserData{nullptr};
uint mSampleRate{0u};
FmtChannels mChannels{FmtMono};
FmtType mType{FmtShort};
uint mSampleLen{0u};
AmbiLayout mAmbiLayout{AmbiLayout::FuMa};
AmbiScaling mAmbiScaling{AmbiScaling::FuMa};
uint mAmbiOrder{0u};
inline uint bytesFromFmt() const noexcept { return BytesFromFmt(mType); }
inline uint channelsFromFmt() const noexcept
{ return ChannelsFromFmt(mChannels, mAmbiOrder); }
inline uint frameSizeFromFmt() const noexcept { return channelsFromFmt() * bytesFromFmt(); }
inline bool isBFormat() const noexcept
{ return mChannels == FmtBFormat2D || mChannels == FmtBFormat3D; }
};
#endif /* ALC_BUFFER_STORAGE_H */
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