AuroraOpenALSoft/Alc/converter.h
Chris Robinson bcdd1cee10 Add a mono<->stereo converter
This converter always outputs floats, and uses energy-preserving scaling.
2017-04-11 07:25:55 -07:00

55 lines
1.5 KiB
C

#ifndef CONVERTER_H
#define CONVERTER_H
#include "alMain.h"
#include "alu.h"
#ifdef __cpluspluc
extern "C" {
#endif
typedef struct SampleConverter {
enum DevFmtType mSrcType;
enum DevFmtType mDstType;
ALsizei mNumChannels;
ALsizei mSrcTypeSize;
ALsizei mDstTypeSize;
ALint mSrcPrepCount;
ALsizei mFracOffset;
ALsizei mIncrement;
ResamplerFunc mResample;
alignas(16) ALfloat mSrcSamples[BUFFERSIZE];
alignas(16) ALfloat mDstSamples[BUFFERSIZE];
struct {
alignas(16) ALfloat mPrevSamples[MAX_PRE_SAMPLES+MAX_POST_SAMPLES];
} Chan[];
} SampleConverter;
SampleConverter *CreateSampleConverter(enum DevFmtType srcType, enum DevFmtType dstType, ALsizei numchans, ALsizei srcRate, ALsizei dstRate);
void DestroySampleConverter(SampleConverter **converter);
ALsizei SampleConverterInput(SampleConverter *converter, const ALvoid **src, ALsizei *srcframes, ALvoid *dst, ALsizei dstframes);
ALsizei SampleConverterAvailableOut(SampleConverter *converter, ALsizei srcframes);
typedef struct ChannelConverter {
enum DevFmtType mSrcType;
enum DevFmtChannels mSrcChans;
enum DevFmtChannels mDstChans;
} ChannelConverter;
ChannelConverter *CreateChannelConverter(enum DevFmtType srcType, enum DevFmtChannels srcChans, enum DevFmtChannels dstChans);
void DestroyChannelConverter(ChannelConverter **converter);
void ChannelConverterInput(ChannelConverter *converter, const ALvoid *src, ALfloat *dst, ALsizei frames);
#ifdef __cpluspluc
}
#endif
#endif /* CONVERTER_H */