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/*
header for synthesis
Copyright (C) 2001 Martin Vogt
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Library General Public License as published by
the Free Software Foundation.
For more information look at the file COPYRIGHT in this package
*/
#ifndef __SYNTHESIS_H
#define __SYNTHESIS_H
#include "common.h"
#include "dct.h"
#define CALCBUFFERSIZE 512
// AIX seems to have FRAMESIZE defined
#undef FRAMESIZE
#define FRAMESIZE (2*2*2*32*18)
class Synthesis {
//
// Subbandsynthesis two calcbuffers for every channel, and two channels.
// calcbufferL[0]=calcbuffer[0]
// calcbufferL[1]=calcbuffer[1]
// calcbufferR[0]=calcbuffer[2]
// calcbufferR[1]=calcbuffer[3]
ATTR_ALIGN(64) REAL calcbuffer[2][2][CALCBUFFERSIZE];
ATTR_ALIGN(64) int currentcalcbuffer,calcbufferoffset;
static ATTR_ALIGN(64) const REAL filter[512];
ATTR_ALIGN(64) REAL out[FRAMESIZE];
int outpos;
public:
Synthesis();
~Synthesis();
// mpeg1,2
void doSynth(int lDownSample,int lOutputStereo,
REAL *fractionL,REAL *fractionR);
void doMP3Synth(int lDownSample,int lOutputStereo,
REAL in[2][SSLIMIT][SBLIMIT]);
// put mpeg to raw
inline void putraw(REAL val) {
out[outpos++]=val;
}
inline REAL* getOutputData() { return out; }
inline void clearrawdata() { outpos=0; }
inline int getLen() { return outpos; }
private:
void synth_Down(int lOutputStereo,REAL *fractionL,REAL *fractionR);
void synth_Std(int lOutputStereo,REAL *fractionL,REAL *fractionR);
void synthMP3_Down(int lOutputStereo,REAL hout [2][SSLIMIT][SBLIMIT]);
void synthMP3_Std(int lOutputStereo,REAL hout [2][SSLIMIT][SBLIMIT]);
inline void nextOffset() {
calcbufferoffset++;
calcbufferoffset&=0xf;
/*
if (calcbufferoffset<15) {
calcbufferoffset++;
} else {
calcbufferoffset=0;
}
*/
currentcalcbuffer^=1;
}
void computebuffer_Std(REAL *fraction,REAL buffer[2][CALCBUFFERSIZE]);
void generate_Std(void);
void generatesingle_Std(void);
void computebuffer_Down(REAL *fraction,REAL buffer[2][CALCBUFFERSIZE]);
void generate_Down(void);
void generatesingle_Down(void);
};
#endif
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