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#ifndef _AL_BUFFER_H_
#define _AL_BUFFER_H_
#include "AL/al.h"
#ifdef __cplusplus
extern "C" {
#endif
/* Input formats (some are currently theoretical) */
enum SrcFmtType {
SrcFmtByte, /* AL_BYTE */
SrcFmtUByte, /* AL_UNSIGNED_BYTE */
SrcFmtShort, /* AL_SHORT */
SrcFmtUShort, /* AL_UNSIGNED_SHORT */
SrcFmtFloat, /* AL_FLOAT */
SrcFmtDouble, /* AL_DOUBLE */
SrcFmtMulaw, /* AL_MULAW */
};
enum SrcFmtChannels {
SrcFmtMono, /* AL_MONO */
SrcFmtStereo, /* AL_STEREO */
SrcFmtRear, /* AL_REAR */
SrcFmtQuad, /* AL_QUAD */
SrcFmtX51, /* AL_5POINT1 (WFX order) */
SrcFmtX61, /* AL_6POINT1 (WFX order) */
SrcFmtX71, /* AL_7POINT1 (WFX order) */
};
void DecomposeInputFormat(ALenum format, enum SrcFmtType *type,
enum SrcFmtChannels *order);
static __inline ALuint BytesFromSrcFmt(enum SrcFmtType type)
{
switch(type)
{
case SrcFmtByte: return sizeof(ALbyte);
case SrcFmtUByte: return sizeof(ALubyte);
case SrcFmtShort: return sizeof(ALshort);
case SrcFmtUShort: return sizeof(ALushort);
case SrcFmtFloat: return sizeof(ALfloat);
case SrcFmtDouble: return sizeof(ALdouble);
case SrcFmtMulaw: return sizeof(ALubyte);
}
return 0;
}
static __inline ALuint ChannelsFromSrcFmt(enum SrcFmtChannels chans)
{
switch(chans)
{
case SrcFmtMono: return 1;
case SrcFmtStereo: return 2;
case SrcFmtRear: return 2;
case SrcFmtQuad: return 4;
case SrcFmtX51: return 6;
case SrcFmtX61: return 7;
case SrcFmtX71: return 8;
}
return 0;
}
static __inline ALuint FrameSizeFromSrcFmt(enum SrcFmtType type,
enum SrcFmtChannels chans)
{
return BytesFromSrcFmt(type) * ChannelsFromSrcFmt(chans);
}
/* Storable formats */
enum FmtType {
FmtUByte,
FmtShort,
FmtFloat,
};
enum FmtChannels {
FmtMono,
FmtStereo,
FmtRear,
FmtQuad,
FmtX51,
FmtX61,
FmtX71,
};
void DecomposeFormat(ALenum format, enum FmtType *type, enum FmtChannels *order);
static __inline ALuint BytesFromFmt(enum FmtType type)
{
switch(type)
{
case FmtUByte: return sizeof(ALubyte);
case FmtShort: return sizeof(ALshort);
case FmtFloat: return sizeof(ALfloat);
}
return 0;
}
static __inline ALuint ChannelsFromFmt(enum FmtChannels chans)
{
switch(chans)
{
case FmtMono: return 1;
case FmtStereo: return 2;
case FmtRear: return 2;
case FmtQuad: return 4;
case FmtX51: return 6;
case FmtX61: return 7;
case FmtX71: return 8;
}
return 0;
}
static __inline ALuint FrameSizeFromFmt(enum FmtType type, enum FmtChannels chans)
{
return BytesFromFmt(type) * ChannelsFromFmt(chans);
}
typedef struct ALbuffer
{
ALvoid *data;
ALsizei size;
ALsizei Frequency;
enum FmtType FmtType;
enum FmtChannels FmtChannels;
ALenum OriginalFormat;
ALsizei OriginalSize;
ALsizei OriginalAlign;
ALsizei LoopStart;
ALsizei LoopEnd;
ALuint refcount; // Number of sources using this buffer (deletion can only occur when this is 0)
// Index to itself
ALuint buffer;
} ALbuffer;
ALvoid ReleaseALBuffers(ALCdevice *device);
#ifdef __cplusplus
}
#endif
#endif
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