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