126 rindas
2.8 KiB
C
126 rindas
2.8 KiB
C
#include "cmPrefix.h"
|
|
#include "cmGlobal.h"
|
|
#include "cmRpt.h"
|
|
#include "cmErr.h"
|
|
#include "cmCtx.h"
|
|
#include "cmMem.h"
|
|
#include "cmMallocDebug.h"
|
|
#include "cmLinkedHeap.h"
|
|
#include "cmFloatTypes.h"
|
|
#include "cmComplexTypes.h"
|
|
#include "cmFileSys.h"
|
|
#include "cmJson.h"
|
|
#include "cmSymTbl.h"
|
|
#include "cmAudioFile.h"
|
|
#include "cmText.h"
|
|
#include "cmProcObj.h"
|
|
#include "cmProcTemplate.h"
|
|
#include "cmMath.h"
|
|
#include "cmProc.h"
|
|
#include "cmProc5.h"
|
|
|
|
#include "cmVectOps.h"
|
|
|
|
|
|
//=======================================================================================================================
|
|
cmGoertzel* cmGoertzelAlloc( cmCtx* c, cmGoertzel* p, double srate, const double* fcHzV, unsigned chCnt, unsigned procSmpCnt, unsigned hopSmpCnt, unsigned wndSmpCnt )
|
|
{
|
|
cmGoertzel* op = cmObjAlloc(cmGoertzel,c,p);
|
|
|
|
op->shb = cmShiftBufAlloc(c,NULL,0,0,0);
|
|
|
|
if( srate > 0 )
|
|
if( cmGoertzelInit(op,srate,fcHzV,chCnt,procSmpCnt,wndSmpCnt,hopSmpCnt) != cmOkRC )
|
|
cmGoertzelFree(&op);
|
|
|
|
return op;
|
|
}
|
|
|
|
cmRC_t cmGoertzelFree( cmGoertzel** pp )
|
|
{
|
|
cmRC_t rc = cmOkRC;
|
|
if( pp==NULL || *pp==NULL )
|
|
return rc;
|
|
|
|
cmGoertzel* p = *pp;
|
|
if((rc = cmGoertzelFinal(p)) != cmOkRC )
|
|
return rc;
|
|
|
|
cmShiftBufFree(&p->shb);
|
|
cmMemFree(p->ch);
|
|
cmMemFree(p->wnd);
|
|
cmObjFree(pp);
|
|
return rc;
|
|
|
|
}
|
|
|
|
cmRC_t cmGoertzelInit( cmGoertzel* p, double srate, const double* fcHzV, unsigned chCnt, unsigned procSmpCnt, unsigned hopSmpCnt, unsigned wndSmpCnt )
|
|
{
|
|
cmRC_t rc;
|
|
unsigned i;
|
|
|
|
if((rc = cmGoertzelFinal(p)) != cmOkRC )
|
|
return rc;
|
|
|
|
p->ch = cmMemResizeZ(cmGoertzelCh,p->ch,chCnt);
|
|
p->chCnt = chCnt;
|
|
p->srate = srate;
|
|
p->wnd = cmMemResizeZ(cmSample_t,p->wnd,wndSmpCnt);
|
|
|
|
cmVOS_Hann(p->wnd,wndSmpCnt);
|
|
|
|
cmShiftBufInit(p->shb,procSmpCnt,wndSmpCnt,hopSmpCnt);
|
|
|
|
for(i=0; i<p->chCnt; ++i)
|
|
{
|
|
cmGoertzelSetFcHz(p,i,fcHzV[i]);
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
cmRC_t cmGoertzelFinal( cmGoertzel* p )
|
|
{ return cmOkRC; }
|
|
|
|
cmRC_t cmGoertzelSetFcHz( cmGoertzel* p, unsigned chIdx, double hz )
|
|
{
|
|
assert( chIdx < p->chCnt );
|
|
p->ch[chIdx].hz = hz;
|
|
p->ch[chIdx].coeff = 2*cos(2*M_PI*hz/p->srate);
|
|
|
|
return cmOkRC;
|
|
}
|
|
|
|
cmRC_t cmGoertzelExec( cmGoertzel* p, const cmSample_t* inpV, unsigned procSmpCnt, double* outV, unsigned chCnt )
|
|
{
|
|
unsigned i,j;
|
|
|
|
while( cmShiftBufExec(p->shb,inpV,procSmpCnt) )
|
|
{
|
|
unsigned xn = p->shb->wndSmpCnt;
|
|
cmSample_t x[ xn ];
|
|
|
|
cmVOS_MultVVV(x,xn,p->wnd,p->shb->outV);
|
|
|
|
for(i=0; i<chCnt; ++i)
|
|
{
|
|
cmGoertzelCh* ch = p->ch + i;
|
|
|
|
ch->s2 = x[0];
|
|
ch->s1 = x[1] + 2 * x[0] * ch->coeff;
|
|
for(j=2; j<xn; ++j)
|
|
{
|
|
ch->s0 = x[j] + ch->coeff * ch->s1 - ch->s2;
|
|
ch->s2 = ch->s1;
|
|
ch->s1 = ch->s0;
|
|
}
|
|
|
|
outV[i] = ch->s2*ch->s2 + ch->s1*ch->s1 - ch->coeff * ch->s2 * ch->s1;
|
|
}
|
|
}
|
|
|
|
return cmOkRC;
|
|
}
|
|
|
|
|