6c66569f79
app/cmOnset.c app/cmPickup.c app/cmScore.c app/cmScoreProc.c app/cmTimeLine.c cmAudDsp.c cmAudioAggDev.c cmAudioFileDev.c cmAudioNrtDev.c cmAudioPort.c cmAudioPortFile.c cmDevCfg.c cmFeatFile.c cmMidi.c cmMidiFile.c cmProc2.c cmProc3.c cmProc4.c cmProcTest.c cmRbm.c cmUiRtSysMstr.c dsp/cmDspClass.c dsp/cmDspFx.c dsp/cmDspNet.c dsp/cmDspPgmKr.c dsp/cmDspPgmPP.c dsp/cmDspPgmPPMain.c dsp/cmDspSys.c dsp/cmDspUi.c
3674 linhas
89 KiB
C
3674 linhas
89 KiB
C
#include "cmPrefix.h"
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#include "cmGlobal.h"
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#include "cmRpt.h"
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#include "cmErr.h"
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#include "cmCtx.h"
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#include "cmMem.h"
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#include "cmMallocDebug.h"
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#include "cmLinkedHeap.h"
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#include "cmSymTbl.h"
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#include "cmFloatTypes.h"
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#include "cmComplexTypes.h"
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#include "cmFileSys.h"
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#include "cmJson.h"
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#include "cmProcObj.h"
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#include "cmProcTemplate.h"
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#include "cmAudioFile.h"
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#include "cmMath.h"
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#include "cmProc.h"
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#include "cmVectOps.h"
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#include "cmProc3.h"
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#include "cmTime.h"
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#include "cmMidi.h" // cmMidiToSciPitch();
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cmPitchShift* cmPitchShiftAlloc( cmCtx* c, cmPitchShift* p, unsigned procSmpCnt, cmReal_t srate )
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{
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cmPitchShift* op = cmObjAlloc(cmPitchShift, c, p );
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if( procSmpCnt != 0 )
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if( cmPitchShiftInit(op, procSmpCnt,srate) != cmOkRC )
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cmPitchShiftFree(&op);
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return op;
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}
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cmRC_t cmPitchShiftFinal(cmPitchShift* p )
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{ return cmOkRC; }
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#define _cube_interp(x,y0,y1,y2,y3) ((y3) - (y2) - (y0) + (y1))*(x)*(x)*(x) + ((y0) - (y1) - ((y3) - (y2) - (y0) + (y1)))*(x)*(x) + ((y2) - (y0))*(x) + (y1)
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#define _lin_interp(x,y0,y1) (y0) + (x) * ((y1)-(y0))
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/*
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cmRC_t cmPitchShiftFree( cmPitchShift** pp )
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{
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cmRC_t rc = cmOkRC;
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if( pp != NULL && *pp != NULL )
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{
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cmPitchShift* p = *pp;
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if(( rc = cmPitchShiftFinal(p)) == cmOkRC )
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{
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cmMemPtrFree(&p->x);
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cmMemPtrFree(&p->y);
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cmMemPtrFree(&p->cf);
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cmObjFree(pp);
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}
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}
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return rc;
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}
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cmRC_t cmPitchShiftInit( cmPitchShift* p, unsigned procSmpCnt, double srate )
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{
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cmRC_t rc;
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if((rc = cmPitchShiftFinal(p)) != cmOkRC )
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return rc;
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p->procSmpCnt = procSmpCnt;
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p->srate = srate;
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p->wn = 4096;
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p->cfn = 1024;
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p->outN = p->procSmpCnt;
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p->x = cmMemResizeZ(cmSample_t, p->x,procSmpCnt + 3 );
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p->y = cmMemResizeZ(cmSample_t, p->y, p->wn );
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p->cf = cmMemResizeZ(cmSample_t, p->cf, p->cfn );
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p->pii = procSmpCnt + p->cfn;
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p->poi = 0;
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p->outV = p->y;
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p->prv_x0 = 0;
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p->prv_x1 = 0;
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p->genFl = true;
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p->xfi = 3;
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p->cfi = 0;
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p->cubeFl = true;
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p->linCfFl = true;
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assert( p->cfn+p->procSmpCnt < p->wn );
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unsigned i;
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for(i=0; i<p->cfn; ++i)
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{
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p->cf[i] = (sin(((double)i/p->cfn * M_PI) - (M_PI/2.0)) + 1.0) / 2.0;
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p->cf[i] = (double)i/p->cfn;
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}
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return rc;
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}
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// Algorithm:
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// 1. Generate srate converted values into p->y[] until it is full.
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// 2. Playback from y[] ignoring any incoming samples until less than
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// p->cfn + p->procSmpCnt samples remain in y[] (i.e. pii < procSmpCnt + cfn).
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// 3. At this point begin generating samples from the input and crossfading them
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// with the last cfn samples in y[].
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// 4. After cfn new samples have been crossfaded proceed to fill the remaining
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// space in y[]
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// 5. Goto 2.
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//
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// Note that since we are pitch shifting down (ratio<1.0) the number of samples generated
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// will always be greater than the number of input samples.
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//
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// Notes:
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// For small downward shifts there will be large time aliasing because the length of time
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// to fill the buffer (step 4) will because only a few extra samples
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// are generated on each input cycle. Try decreasing the window length as the pitch ratio increases.
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//
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// Implement smoothly varying ratio changes.
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//
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// Change model so that at ratio 1.0 the input is effectively being constantly cross faded to produce
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// identity output.
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void _cmPitchShiftDown( cmPitchShift* p, double ratio, const cmSample_t* x, unsigned xn )
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{
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// shift off the expired samples
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memmove(p->y,p->y + p->procSmpCnt, (p->pii - p->procSmpCnt) * sizeof(cmSample_t));
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p->pii -= p->procSmpCnt;
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// if not currently generating and there are less than cfn + procSmpCnt samples remaining ...
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if( p->genFl == false && p->pii <= p->procSmpCnt + p->cfn )
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{
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// ... then setup to begin generating
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p->cfi = 0;
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p->genFl = true;
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p->xfi = 3;
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}
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if( p->genFl )
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{
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// setup the incoming samples
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p->x[0] = p->prv_x0;
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p->x[1] = p->prv_x1;
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p->x[2] = p->prv_x2;
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memcpy(p->x+2,x,p->procSmpCnt*sizeof(cmSample_t));
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int n0 = p->cubeFl ? xn+1 : xn+2;
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// as long as there are incoming samples available and space left in the output buffer
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for(; p->xfi < n0 && p->pii < p->wn; p->xfi += ratio )
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{
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unsigned xii = floor(p->xfi);
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double frac = p->xfi - xii;
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// generate the value of the output sample
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cmSample_t value;
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if( p->cubeFl )
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value = _cube_interp(frac,p->x[xii-1],p->x[xii],p->x[xii+1],p->x[xii+2]);
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else
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value = p->x[ xii ] + frac * (p->x[ xii+1 ] - p->x[xii]);
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// if xfading
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if( p->cfi < p->cfn )
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{
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// calc index into y[] of the sample to crossfade with
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int idx = p->pii - p->cfn + p->cfi;
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p->y[idx] = (1.0 - p->cf[p->cfi]) * p->y[idx] + p->cf[p->cfi] * value;
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++p->cfi;
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}
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else
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{
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// else fill the remaing space in y[]
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p->y[p->pii] = value;
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++p->pii;
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}
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}
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// if the output buffer is full then stop generating
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if( p->pii == p->wn )
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p->genFl = false;
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}
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// reset the input index to the beginning of the buffer
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p->xfi -= xn;
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p->prv_x0 = x[xn-3];
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p->prv_x1 = x[xn-2];
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p->prv_x2 = x[xn-1];
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}
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cmRC_t cmPitchShiftExec( cmPitchShift* p, const cmSample_t* x, cmSample_t* y, unsigned n, double shiftRatio )
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{
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assert(n == p->procSmpCnt);
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if( shiftRatio >= 1 )
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memcpy(y,x,n*sizeof(cmSample_t));
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else
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{
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_cmPitchShiftDown(p,shiftRatio,x,n);
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if( y != NULL )
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memcpy(y,p->y,n*sizeof(cmSample_t));
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}
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return cmOkRC;
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}
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*/
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cmRC_t cmPitchShiftFree( cmPitchShift** pp )
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{
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cmRC_t rc = cmOkRC;
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if( pp != NULL && *pp != NULL )
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{
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cmPitchShift* p = *pp;
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if(( rc = cmPitchShiftFinal(p)) == cmOkRC )
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{
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cmMemPtrFree(&p->b);
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cmMemPtrFree(&p->outV);
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cmMemPtrFree(&p->wnd);
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cmMemPtrFree(&p->osc[0].y);
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cmMemPtrFree(&p->osc[1].y);
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cmObjFree(pp);
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}
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}
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return rc;
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}
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/*
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cmRC_t cmPitchShiftInit( cmPitchShift* p, unsigned procSmpCnt, double srate)
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{
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cmRC_t rc;
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if((rc = cmPitchShiftFinal(p)) != cmOkRC )
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return rc;
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p->procSmpCnt = procSmpCnt;
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p->srate = srate;
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p->wn = 4096;
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p->in = 2*p->wn + p->procSmpCnt;
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p->outN = p->procSmpCnt;
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p->m = cmMemResizeZ(cmSample_t, p->m,p->in + 2 );
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p->x = p->m + 1;
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p->outV = cmMemResizeZ(cmSample_t, p->outV,procSmpCnt );
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p->wnd = cmMemResizeZ(cmSample_t, p->wnd, p->wn+1 );
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p->ii = 1;
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p->cubeFl = true;
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p->ei0 = -1;
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p->ei1 = -1;
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p->osc[0].ratio = 1.0;
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p->osc[0].wi = 0;
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p->osc[0].xi = 0;
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p->osc[0].yN = 2*p->wn;
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p->osc[0].y = cmMemResizeZ(cmSample_t, p->osc[0].y, p->osc[0].yN );
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p->osc[0].yii = 0;
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p->osc[0].yoi = 0;
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p->osc[0].ynn = 0;
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p->osc[1].ratio = 1.0;
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p->osc[1].wi = floor(p->wn/2);
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p->osc[1].xi = 0;
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p->osc[1].yN = 2*p->wn;
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p->osc[1].y = cmMemResizeZ(cmSample_t, p->osc[1].y, p->osc[1].yN );
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p->osc[1].yii = 0;
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p->osc[1].yoi = 0;
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p->osc[1].ynn = 0;
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assert( p->in >= p->procSmpCnt + 1 );
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cmVOS_Hann( p->wnd, p->wn+1 );
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return rc;
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}
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#define _isInNoGoZone(p,i) ( ((0 <= (i)) && ((i) <= (p)->ei0)) || (((p)->ii <= (i)) && ((i) <= (p)->ei1)) )
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#define _isNotInNoGoZone(p,i) (!_isInNoGoZone(p,i))
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void _startNewWindow( cmPitchShift* p, cmPitchShiftOsc_t* op, int li, double ratio)
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{
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op->wi = 0;
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if( op->ratio < 1.0 )
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op->xi = p->ii - p->procSmpCnt;
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else
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op->xi = p->ii + (li)*(p->procSmpCnt/ratio);
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while( op->xi < 0 )
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op->xi += p->in-1;
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while( op->xi > (p->in-1) )
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op->xi -= (p->in-1);
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op->xi = floor(op->xi);
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}
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void _cmPitchShiftOsc( cmPitchShift* p, cmPitchShiftOsc_t* op, double ratio )
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{
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int li = 0;
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bool contFl = 1;
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// if we are waiting to start a new window until the output buffer drains
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if( op->wi==-1 )
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{
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// if the output buffer has enough samples to complete this cycle - return
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if(op->ynn >= p->procSmpCnt)
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return;
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// otherwise start a new window
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_startNewWindow(p,op,li,ratio);
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}
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// iterate until all output samples have been generated
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for(li=0; contFl; ++li)
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{
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// iterate over one window or until output is complete
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while( op->wi < p->wn )
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{
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int wii = floor(op->wi);
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double frac = op->wi - wii;
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int xii = (op->xi + wii) % (p->in-1);
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cmSample_t wnd = p->wnd[ wii ] + frac * (p->wnd[wii+1] - p->wnd[wii]);
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cmSample_t val;
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// if enough samples have been generated and the next input will not be in the no-go zone
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if( (op->ynn >= p->procSmpCnt) && _isNotInNoGoZone(p,xii-1) && _isNotInNoGoZone(p,xii+2) )
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{
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contFl = false;
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break;
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}
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if( op->ynn >= op->yN )
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{
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printf("OVER\n");
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contFl = false;
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break;
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}
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// generate the value of the output sample
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if( p->cubeFl )
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val = _cube_interp(frac,p->x[xii-1],p->x[xii],p->x[xii+1],p->x[xii+2]);
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else
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val = p->x[ xii ] + frac * (p->x[ xii+1 ] - p->x[xii]);
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// apply the window function and assign to output
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op->y[op->yii] = wnd * val;
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// incr the count of samples in y[]
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++op->ynn;
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// advance the output buffers input location
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op->yii = (op->yii + 1) % op->yN;
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op->wi += ratio; // increment the window location
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}
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// if a window completed
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if( op->wi >= p->wn )
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{
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if( (ratio < 1.0) && (op->ynn >= p->procSmpCnt) )
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{
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op->wi = -1;
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break;
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}
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_startNewWindow(p,op,li+1,ratio);
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}
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}
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}
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// in=5
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// m x
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// 0 1 2 3 4 5
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// 1 x x a b c d e
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// 2 c d e f g h i
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// 3 g h i j k l m
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//
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// ratio < 1 - the output oscillators must be able to generate 1 complete window prior to new samples
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// overwriting the oscillators location in the input buffer.
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cmRC_t cmPitchShiftExec( cmPitchShift* p, const cmSample_t* x, cmSample_t* y, unsigned xn, double ratio )
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{
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cmRC_t rc = cmOkRC;
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//memcpy(y,x,xn*sizeof(cmSample_t));
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//return rc;
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int i;
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// copy in the incoming samples
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for(i=0; i<xn; ++i)
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{
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p->x[p->ii] = x[i];
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++p->ii;
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if( p->ii == p->in+1 )
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{
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p->x[-1] = p->x[p->in-2];
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p->x[ 0] = p->x[p->in-1];
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p->x[ 1] = p->x[p->in];
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p->ii = 2;
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}
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}
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// locate the section of the input buffer which
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// will be written over on the next cycle.
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// The oscillators have to avoid ending in this area
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if( (p->in+1) - p->ii >= p->procSmpCnt )
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{
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p->ei1 = p->ii + p->procSmpCnt - 1;
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p->ei0 = -1;
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}
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else
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{
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int n = (p->in+1) - p->ii;
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p->ei1 = (p->ii + n) - 1;
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p->ei0 = (p->procSmpCnt - n) - 1;
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}
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//memset(p->outV,0,p->procSmpCnt*sizeof(cmSample_t));
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_cmPitchShiftOsc(p, p->osc + 0, ratio );
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_cmPitchShiftOsc(p, p->osc + 1, ratio );
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// mix the indidual output of the two oscillators to form the final output
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if( p->osc[0].ynn < p->procSmpCnt || p->osc[1].ynn < p->procSmpCnt )
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printf("UNDER\n");
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for(i=0; i<p->procSmpCnt; ++i)
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{
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p->outV[i] = p->osc[0].y[p->osc[0].yoi] + p->osc[1].y[p->osc[1].yoi];
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p->osc[0].yoi = (p->osc[0].yoi + 1) % p->osc[0].yN;
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p->osc[1].yoi = (p->osc[1].yoi + 1) % p->osc[1].yN;
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}
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p->osc[0].ynn -= p->procSmpCnt;
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p->osc[1].ynn -= p->procSmpCnt;
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if( y != NULL )
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memcpy(y,p->outV,p->outN*sizeof(cmSample_t));
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return rc;
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}
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*/
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cmRC_t cmPitchShiftInit( cmPitchShift* p, unsigned procSmpCnt, double srate)
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{
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cmRC_t rc;
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if((rc = cmPitchShiftFinal(p)) != cmOkRC )
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return rc;
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p->procSmpCnt = procSmpCnt;
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p->outN = procSmpCnt;
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p->outV = cmMemAllocZ(cmSample_t,procSmpCnt);
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p->wn = 2048;
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p->xn = 2*p->wn + procSmpCnt;
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p->bn = p->xn + 3;
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p->b = cmMemAllocZ(cmSample_t,p->bn);
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p->x = p->b + 1;
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p->wnd = cmMemAllocZ(cmSample_t,p->wn+1);
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p->xni = p->xn - procSmpCnt + 2;
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p->cubeFl = true;
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int i;
|
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for(i=0; i<2; ++i)
|
|
{
|
|
cmPitchShiftOsc_t* op = p->osc + i;
|
|
op->xi = p->procSmpCnt;
|
|
op->yn = p->wn * 2;
|
|
op->y = cmMemAllocZ(cmSample_t,op->yn);
|
|
op->yii= 0;
|
|
op->yoi= 0;
|
|
op->ynn= 0;
|
|
op->wi = i==0 ? 0 : p->wn/2;
|
|
}
|
|
|
|
cmVOS_Hann(p->wnd,p->wn+1);
|
|
|
|
return rc;
|
|
}
|
|
|
|
void _cmPitchShiftOscExec( cmPitchShift* p, cmPitchShiftOsc_t* op, double ratio )
|
|
{
|
|
|
|
int k = 0;
|
|
|
|
// account for right buffer shift on input
|
|
op->xi -= p->procSmpCnt;
|
|
|
|
// pass through code for testing
|
|
if(0)
|
|
{
|
|
int i;
|
|
for(i=0; i<p->procSmpCnt; ++i)
|
|
{
|
|
op->y[op->yii] = p->x[ (int)floor(op->xi) ];
|
|
op->yii = (op->yii + 1) % op->yn;
|
|
op->ynn += 1;
|
|
op->xi += 1.0;
|
|
}
|
|
return;
|
|
}
|
|
|
|
|
|
while(1)
|
|
{
|
|
int wii = floor(op->wi);
|
|
double wfrac = op->wi - wii;
|
|
|
|
int xii = floor(op->xi);
|
|
double vfrac = op->xi - xii;
|
|
cmSample_t val;
|
|
|
|
// if enough output samples have been generated and we are outside the no-land zone
|
|
if( (op->ynn >= p->procSmpCnt && op->xi >= p->procSmpCnt) )
|
|
break;
|
|
|
|
if( op->xi >= p->xn )
|
|
{
|
|
//printf("Wrap %f %f\n",op->xi,op->wi);
|
|
}
|
|
|
|
cmSample_t wnd = p->wnd[ wii ] + wfrac * (p->wnd[wii+1] - p->wnd[wii]);
|
|
|
|
// generate the value of the output sample
|
|
if( p->cubeFl )
|
|
val = _cube_interp(vfrac,p->x[xii-1],p->x[xii],p->x[xii+1],p->x[xii+2]);
|
|
else
|
|
val = p->x[ xii ] + vfrac * (p->x[ xii+1 ] - p->x[xii]);
|
|
|
|
// apply the window function and assign to output
|
|
op->y[op->yii] = wnd * val;
|
|
|
|
// incr the count of samples in y[]
|
|
++op->ynn;
|
|
|
|
// advance the output buffers input location
|
|
op->yii = (op->yii + 1) % op->yn;
|
|
|
|
op->wi += ratio<1 ? 1 : ratio; // increment the window location
|
|
op->xi += ratio;
|
|
|
|
if( op->wi >= p->wn )
|
|
{
|
|
++k;
|
|
|
|
op->wi = 0;
|
|
|
|
if( ratio < 1 )
|
|
op->xi = p->xni; // begin of most recent block of procSmpCnt input samples
|
|
else
|
|
op->xi = k*p->procSmpCnt/ratio;
|
|
|
|
}
|
|
}
|
|
|
|
//if( op->ynn != p->procSmpCnt )
|
|
// printf("wi:%f xi:%f ynn:%i\n",op->wi,op->xi,op->ynn);
|
|
|
|
}
|
|
// b: 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17
|
|
// x: -1 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16
|
|
//
|
|
// On each cycle:
|
|
// 1) shift x[] left by procSmpCnt samples.
|
|
// 2) add new samples on right side of x[]
|
|
// 3) oscillator scans from right to left.
|
|
cmRC_t cmPitchShiftExec( cmPitchShift* p, const cmSample_t* x, cmSample_t* y, unsigned xn, double ratio, bool bypassFl )
|
|
{
|
|
if(0)
|
|
{
|
|
memcpy(p->outV,x,xn*sizeof(cmSample_t));
|
|
|
|
if( y != NULL )
|
|
memcpy(y,x,xn*sizeof(cmSample_t));
|
|
|
|
return cmOkRC;
|
|
}
|
|
|
|
if( y == NULL )
|
|
return cmOkRC;
|
|
|
|
if( x == NULL )
|
|
{
|
|
cmVOS_Zero(y,xn);
|
|
return cmOkRC;
|
|
}
|
|
|
|
if( bypassFl )
|
|
{
|
|
memcpy(p->outV,x,xn*sizeof(cmSample_t));
|
|
|
|
if( y != NULL )
|
|
memcpy(y,x,xn*sizeof(cmSample_t));
|
|
|
|
return cmOkRC;
|
|
}
|
|
|
|
int i;
|
|
memmove(p->x - 1, p->x+p->procSmpCnt-1,(p->xn - p->procSmpCnt + 3)*sizeof(cmSample_t));
|
|
memcpy( p->x + p->xni, x, xn * sizeof(cmSample_t) );
|
|
|
|
//memmove(p->x + p->procSmpCnt -1, p->x - 1, (p->xn - p->procSmpCnt + 3) * sizeof(cmSample_t));
|
|
//memcpy( p->x-1, x, xn * sizeof(cmSample_t));
|
|
|
|
_cmPitchShiftOscExec(p, p->osc + 0, ratio );
|
|
_cmPitchShiftOscExec(p, p->osc + 1, ratio );
|
|
|
|
// mix the indidual output of the two oscillators to form the final output
|
|
if( p->osc[0].ynn < p->procSmpCnt || p->osc[1].ynn < p->procSmpCnt )
|
|
printf("UNDER\n");
|
|
|
|
for(i=0; i<p->procSmpCnt; ++i)
|
|
{
|
|
p->outV[i] = p->osc[0].y[p->osc[0].yoi] + p->osc[1].y[p->osc[1].yoi];
|
|
p->osc[0].yoi = (p->osc[0].yoi + 1) % p->osc[0].yn;
|
|
p->osc[1].yoi = (p->osc[1].yoi + 1) % p->osc[1].yn;
|
|
}
|
|
|
|
p->osc[0].ynn -= p->procSmpCnt;
|
|
p->osc[1].ynn -= p->procSmpCnt;
|
|
|
|
if( y != NULL )
|
|
memcpy(y,p->outV,xn*sizeof(cmSample_t));
|
|
|
|
return cmOkRC;
|
|
}
|
|
|
|
//=======================================================================================================================
|
|
cmLoopRecord* cmLoopRecordAlloc(
|
|
cmCtx* c, cmLoopRecord* p, unsigned procSmpCnt, unsigned maxRecdSmpCnt, unsigned xfadeSmpCnt )
|
|
{
|
|
cmLoopRecord* op = cmObjAlloc(cmLoopRecord, c, p );
|
|
if( procSmpCnt != 0 )
|
|
if( cmLoopRecordInit(op, procSmpCnt, maxRecdSmpCnt, xfadeSmpCnt) != cmOkRC )
|
|
cmLoopRecordFree(&op);
|
|
return op;
|
|
}
|
|
/*
|
|
cmRC_t cmLoopRecordFree( cmLoopRecord** pp )
|
|
{
|
|
cmRC_t rc = cmOkRC;
|
|
if( pp != NULL && *pp != NULL )
|
|
{
|
|
cmLoopRecord* p = *pp;
|
|
if(( rc = cmLoopRecordFinal(p)) == cmOkRC )
|
|
{
|
|
cmMemPtrFree(&p->bufMem);
|
|
cmMemPtrFree(&p->bufArray);
|
|
cmMemPtrFree(&p->outV);
|
|
cmMemPtrFree(&p->xfadeFunc);
|
|
cmObjFree(pp);
|
|
}
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
cmRC_t cmLoopRecordInit( cmLoopRecord* p, unsigned procSmpCnt, unsigned maxRecdSmpCnt, unsigned xfadeSmpCnt )
|
|
{
|
|
cmRC_t rc;
|
|
unsigned i;
|
|
|
|
if((rc = cmLoopRecordFinal(p)) != cmOkRC )
|
|
return rc;
|
|
|
|
assert( xfadeSmpCnt < maxRecdSmpCnt );
|
|
|
|
p->maxRecdSmpCnt = maxRecdSmpCnt;
|
|
p->bufArrayCnt = 2;
|
|
p->bufMem = cmMemResizeZ( cmSample_t, p->bufMem, maxRecdSmpCnt * p->bufArrayCnt );
|
|
p->bufArray = cmMemResizeZ( cmLoopRecdBuf, p->bufArray, p->bufArrayCnt );
|
|
p->outV = cmMemResizeZ( cmSample_t, p->outV, procSmpCnt );
|
|
p->xfadeFunc = cmMemResizeZ( cmSample_t, p->xfadeFunc, xfadeSmpCnt+1 );
|
|
p->outN = procSmpCnt;
|
|
p->procSmpCnt = procSmpCnt;
|
|
p->xfadeSmpCnt = xfadeSmpCnt;
|
|
p->recdBufIdx = 0;
|
|
p->playBufIdx = 1;
|
|
p->recdFl = false;
|
|
p->playFl = false;
|
|
|
|
for(i=0; i<p->bufArrayCnt; ++i)
|
|
{
|
|
p->bufArray[i].bV = p->bufMem + (i * maxRecdSmpCnt);
|
|
p->bufArray[i].bN = maxRecdSmpCnt;
|
|
p->bufArray[i].xfi = xfadeSmpCnt;
|
|
}
|
|
|
|
for(i=0; i<=p->xfadeSmpCnt; ++i)
|
|
p->xfadeFunc[i] = (cmReal_t)i/p->xfadeSmpCnt;
|
|
|
|
return rc;
|
|
}
|
|
|
|
cmRC_t cmLoopRecordFinal( cmLoopRecord* p )
|
|
{ return cmOkRC; }
|
|
|
|
cmRC_t cmLoopRecordExec( cmLoopRecord* p, const cmSample_t* x, cmSample_t* y, unsigned xn, bool recdFl, bool playFl )
|
|
{
|
|
unsigned i;
|
|
|
|
// if the recdFl was enabled
|
|
if(recdFl==true && p->recdFl==false)
|
|
{
|
|
p->recdFl = true;
|
|
p->bufArray[p->recdBufIdx].bii = 0;
|
|
p->bufArray[p->recdBufIdx].boi = 0;
|
|
printf("Recd:on %i\n",p->recdBufIdx);
|
|
}
|
|
else
|
|
// if the recdFl was disabled
|
|
if( recdFl==false && p->recdFl==true )
|
|
{
|
|
p->recdFl = false;
|
|
playFl = true;
|
|
p->playBufIdx = p->recdBufIdx;
|
|
p->recdBufIdx = (p->recdBufIdx + 1) % p->bufArrayCnt;
|
|
printf("Recd:off\n");
|
|
}
|
|
|
|
// if the playFl triggered on
|
|
if( playFl==true && p->playFl==false)
|
|
{
|
|
p->bufArray[p->playBufIdx].boi = 0;
|
|
p->playFl = true;
|
|
//printf("Play:on %i %i\n",p->playBufIdx,p->bufArray[p->playBufIdx].bii);
|
|
}
|
|
|
|
// if recording
|
|
if( p->recdFl )
|
|
{
|
|
cmLoopRecdBuf* rp = p->bufArray + p->recdBufIdx;
|
|
|
|
for(i=0; i<xn && rp->bii < rp->bN; ++i,++rp->bii)
|
|
{
|
|
rp->bV[ rp->bii ] = x[i];
|
|
}
|
|
|
|
p->recdFl = rp->bii != rp->bN;
|
|
}
|
|
|
|
// if playing
|
|
if( p->playFl )
|
|
{
|
|
cmLoopRecdBuf* rp = p->bufArray + p->playBufIdx;
|
|
unsigned xf0n = p->xfadeSmpCnt/2;
|
|
unsigned xf1n = rp->bii - p->xfadeSmpCnt/2;
|
|
unsigned xfi0 = (rp->boi + p->xfadeSmpCnt/2) % rp->bii;
|
|
|
|
for(i=0; i<xn; ++i)
|
|
{
|
|
bool fl = rp->boi < xf0n || rp->boi > xf1n;
|
|
cmSample_t env = fl ? p->xfadeFunc[ rp->xfi ] : 1;
|
|
|
|
p->outV[i] = ((1.0-env) * rp->bV[ rp->boi ]) + (env * rp->bV[ xfi0 ]);
|
|
rp->boi = (rp->boi + 1) % rp->bii;
|
|
xfi0 = (xfi0 + 1) % rp->bii;
|
|
}
|
|
}
|
|
|
|
if( y != NULL )
|
|
memcpy(y,p->outV,xn*sizeof(cmSample_t));
|
|
|
|
return cmOkRC;
|
|
}
|
|
|
|
*/
|
|
|
|
cmRC_t cmLoopRecordFree( cmLoopRecord** pp )
|
|
{
|
|
cmRC_t rc = cmOkRC;
|
|
if( pp != NULL && *pp != NULL )
|
|
{
|
|
cmLoopRecord* p = *pp;
|
|
if(( rc = cmLoopRecordFinal(p)) == cmOkRC )
|
|
{
|
|
cmMemPtrFree(&p->bufMem);
|
|
cmMemPtrFree(&p->bufArray);
|
|
cmMemPtrFree(&p->outV);
|
|
cmObjFree(pp);
|
|
}
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
cmRC_t cmLoopRecordInit( cmLoopRecord* p, unsigned procSmpCnt, unsigned maxRecdSmpCnt, unsigned xfadeSmpCnt )
|
|
{
|
|
cmRC_t rc;
|
|
unsigned i;
|
|
|
|
if((rc = cmLoopRecordFinal(p)) != cmOkRC )
|
|
return rc;
|
|
|
|
assert( xfadeSmpCnt < maxRecdSmpCnt );
|
|
|
|
p->maxRecdSmpCnt = maxRecdSmpCnt;
|
|
p->bufArrayCnt = 2;
|
|
p->bufMem = cmMemResizeZ( cmSample_t, p->bufMem, (maxRecdSmpCnt+3) * p->bufArrayCnt * 2 );
|
|
p->bufArray = cmMemResizeZ( cmLoopRecdBuf, p->bufArray, p->bufArrayCnt );
|
|
p->outV = cmMemResizeZ( cmSample_t, p->outV, procSmpCnt );
|
|
p->outN = procSmpCnt;
|
|
p->procSmpCnt = procSmpCnt;
|
|
p->xfadeSmpCnt = xfadeSmpCnt;
|
|
p->recdBufIdx = 0;
|
|
p->playBufIdx = 1;
|
|
p->recdFl = false;
|
|
p->playFl = false;
|
|
|
|
for(i=0; i<p->bufArrayCnt; ++i)
|
|
{
|
|
p->bufArray[i].xV = p->bufMem + ((2 * i + 0) * (maxRecdSmpCnt+3)) + 1;
|
|
p->bufArray[i].xN = maxRecdSmpCnt;
|
|
p->bufArray[i].xii = 0;
|
|
p->bufArray[i].wV = p->bufMem + ((2 * i + 1) * (maxRecdSmpCnt+3));
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
cmRC_t cmLoopRecordFinal( cmLoopRecord* p )
|
|
{ return cmOkRC; }
|
|
|
|
void _cmLoopRecordOscExec( cmLoopRecord* p, cmLoopRecdBuf* rp, cmLoopRecdOsc* op, double ratio )
|
|
{
|
|
unsigned i;
|
|
for(i=0; i<p->outN; ++i)
|
|
{
|
|
int xi = floor(op->xi);
|
|
double vfrac = op->xi - xi;
|
|
cmSample_t val = _cube_interp(vfrac,rp->xV[xi-1],rp->xV[xi],rp->xV[xi+1],rp->xV[xi+2]);
|
|
|
|
int wi = floor(op->wi);
|
|
double wfrac = op->wi - wi;
|
|
cmSample_t wnd = rp->wV[ wi ] + wfrac * (rp->wV[wi+1] - rp->wV[wi]);
|
|
|
|
|
|
wnd = (wnd - 0.5) * op->u + 0.5;
|
|
|
|
p->outV[i] += wnd * val;
|
|
|
|
op->wi += ratio;
|
|
|
|
if( op->wi >= rp->xii )
|
|
{
|
|
op->wi -= rp->xii;
|
|
op->u *= -1.0;
|
|
}
|
|
|
|
op->xi += ratio;
|
|
if( op->xi >= rp->xii )
|
|
op->xi -= rp->xii;
|
|
|
|
}
|
|
}
|
|
|
|
//
|
|
// a b c d e f g h i - osc 0 sample value
|
|
// 0.0 .25 0.5 .75 1.0 1.0 .75 0.5 .25 - osc 0 window value
|
|
//
|
|
// e f g h i a b c d - osc 1 sample value
|
|
// 1.0 .75 0.5 .25 0.0 0.0 .25 0.5 .75 - osc 1 window value
|
|
//
|
|
// Notes:
|
|
// 1) The window values transition through zero
|
|
// at the loop point.
|
|
// 2)
|
|
|
|
cmRC_t cmLoopRecordExec( cmLoopRecord* p, const cmSample_t* x, cmSample_t* y, unsigned xn, bool bypassFl, bool recdFl, bool playFl, double ratio, double pgain, double rgain )
|
|
{
|
|
int i,j;
|
|
|
|
assert( xn <= p->outN );
|
|
|
|
if( bypassFl )
|
|
{
|
|
memcpy(p->outV,x,xn*sizeof(cmSample_t));
|
|
|
|
if( y != NULL )
|
|
{
|
|
//memcpy(y,x,xn*sizeof(cmSample_t));
|
|
cmVOS_MultVVS(y,xn,x,pgain);
|
|
}
|
|
return cmOkRC;
|
|
}
|
|
|
|
// if the recdFl was enabled
|
|
if(recdFl==true && p->recdFl==false)
|
|
{
|
|
p->recdFl = true;
|
|
p->bufArray[p->recdBufIdx].xii = 0;
|
|
//printf("Recd:on %i\n",p->recdBufIdx);
|
|
}
|
|
else
|
|
// if the recdFl was disabled
|
|
if( recdFl==false && p->recdFl==true )
|
|
{
|
|
cmLoopRecdBuf* rp = p->bufArray + p->recdBufIdx;
|
|
|
|
// arrange the 'wrap-around' samples
|
|
rp->xV[-1] = rp->xV[rp->xii-1];
|
|
rp->xV[rp->xii ] = rp->xV[0];
|
|
rp->xV[rp->xii+1] = rp->xV[1];
|
|
|
|
// calc the length of the cross-fade
|
|
if( rp->xii < p->xfadeSmpCnt * 2)
|
|
rp->xfN = rp->xii/2;
|
|
else
|
|
rp->xfN = p->xfadeSmpCnt;
|
|
|
|
assert( rp->xfN > 0 );
|
|
|
|
// fill the crossfade window with zeros
|
|
cmVOS_Zero(rp->wV,rp->xii);
|
|
|
|
|
|
// fill the last xfN samples in the xfade window vector with a fade-in slope
|
|
int xfi = rp->xii - rp->xfN;
|
|
|
|
for(j=0; j<rp->xfN; ++j)
|
|
rp->wV[xfi+j] = (cmSample_t)j/rp->xfN;
|
|
|
|
// initialize the oscillators
|
|
for(j=0; j<2; ++j)
|
|
{
|
|
//
|
|
rp->osc[j].xi = j==0 ? 0.0 : rp->xfN; // oscillators are p->xfN samples out of phase
|
|
rp->osc[j].u = j==0 ? 1.0 : -1.0; // set windows to have opposite polarity
|
|
rp->osc[j].wi = xfi; // begin window at cross-fade
|
|
}
|
|
|
|
p->recdFl = false;
|
|
p->playFl = true;
|
|
p->playBufIdx = p->recdBufIdx;
|
|
p->recdBufIdx = (p->recdBufIdx + 1) % p->bufArrayCnt;
|
|
//printf("Recd:off\n");
|
|
}
|
|
|
|
|
|
// if recording
|
|
if( p->recdFl )
|
|
{
|
|
cmLoopRecdBuf* rp = p->bufArray + p->recdBufIdx;
|
|
|
|
for(i=0; i<xn && rp->xii < rp->xN; ++i,++rp->xii)
|
|
{
|
|
rp->xV[ rp->xii ] = x[i];
|
|
}
|
|
|
|
}
|
|
|
|
if( playFl && p->bufArray[p->playBufIdx].xii > 0 )
|
|
{
|
|
p->playFl = !p->playFl;
|
|
if( p->playFl )
|
|
{
|
|
// reset oscillators to start at the begin of loop
|
|
}
|
|
|
|
}
|
|
|
|
|
|
if( p->playFl )
|
|
{
|
|
cmLoopRecdBuf* rp = p->bufArray + p->playBufIdx;
|
|
cmVOS_Zero(p->outV,p->outN);
|
|
_cmLoopRecordOscExec(p,rp, rp->osc + 0, ratio );
|
|
_cmLoopRecordOscExec(p,rp, rp->osc + 1, ratio );
|
|
}
|
|
|
|
if( y != NULL )
|
|
{
|
|
//memcpy(y,p->outV,xn*sizeof(cmSample_t));
|
|
for(i=0; i<p->outN; ++i)
|
|
y[i] = (pgain * x[i]) + (rgain * p->outV[i]);
|
|
}
|
|
|
|
return cmOkRC;
|
|
}
|
|
|
|
//=======================================================================================================================
|
|
cmGateDetect* cmGateDetectAlloc( cmCtx* c, cmGateDetect* p, unsigned procSmpCnt, cmReal_t onThreshPct, cmReal_t onThreshDb, cmReal_t offThreshDb )
|
|
{
|
|
cmGateDetect* op = cmObjAlloc(cmGateDetect, c, p );
|
|
|
|
if( procSmpCnt != 0 )
|
|
if( cmGateDetectInit(op, procSmpCnt, onThreshPct, onThreshDb, offThreshDb) != cmOkRC )
|
|
cmGateDetectFree(&op);
|
|
return op;
|
|
|
|
}
|
|
|
|
cmRC_t cmGateDetectFree( cmGateDetect** pp )
|
|
{
|
|
cmRC_t rc;
|
|
|
|
if( pp==NULL || *pp == NULL )
|
|
return cmOkRC;
|
|
|
|
cmGateDetect* p = *pp;
|
|
|
|
if((rc = cmGateDetectFinal(p)) != cmOkRC )
|
|
return rc;
|
|
|
|
cmMemPtrFree(&p->rmsV);
|
|
cmMemPtrFree(&p->wndV);
|
|
cmObjFree(pp);
|
|
|
|
return cmOkRC;
|
|
}
|
|
|
|
cmRC_t cmGateDetectInit( cmGateDetect* p, unsigned procSmpCnt, cmReal_t onThreshPct, cmReal_t onThreshDb, cmReal_t offThreshDb )
|
|
{
|
|
cmRC_t rc;
|
|
if((rc = cmGateDetectFinal(p)) != cmOkRC )
|
|
return rc;
|
|
|
|
p->rmsN = 3;
|
|
p->rmsV = cmMemResizeZ(cmSample_t,p->rmsV,p->rmsN);
|
|
p->wndN = 9;
|
|
p->wndV = cmMemResizeZ(cmSample_t,p->wndV,p->wndN);
|
|
p->rms = 0;
|
|
p->durSmpCnt = 0;
|
|
p->gateFl = false;
|
|
p->deltaFl = false;
|
|
p->onThreshPct = onThreshPct;
|
|
p->onThreshDb = onThreshDb;
|
|
p->offThreshDb = offThreshDb;
|
|
|
|
return rc;
|
|
}
|
|
|
|
cmRC_t cmGateDetectFinal(cmGateDetect* p )
|
|
{
|
|
return cmOkRC;
|
|
}
|
|
|
|
cmRC_t cmGateDetectExec22( cmGateDetect* p, const cmSample_t* x, unsigned xn )
|
|
{
|
|
p->deltaFl = false;
|
|
p->rms = cmVOS_RMS(x,xn,xn);
|
|
cmReal_t db = p->rms==0 ? -100 : 20*log10(p->rms);
|
|
//cmSample_t b0 = 0;
|
|
cmSample_t b1 = 0;
|
|
|
|
cmVOS_Shift(p->rmsV,p->rmsN,-1,p->rms);
|
|
|
|
// if gate is on
|
|
if( p->gateFl )
|
|
{
|
|
p->deltaFl = db < p->offThreshDb;
|
|
}
|
|
else
|
|
{
|
|
|
|
//cmVOS_Lsq1(NULL,p->rmsV,p->rmsN,&b0,&b1);
|
|
// p->deltaFl = b1 > p->onThreshPct && db > p->onThreshDb;
|
|
|
|
unsigned i;
|
|
|
|
for(i=0; i<p->rmsN-1; ++i)
|
|
b1 += p->rmsV[i+1] - p->rmsV[i];
|
|
|
|
b1 /= p->rmsN;
|
|
|
|
p->deltaFl = b1 > p->onThreshPct && db > p->onThreshDb;
|
|
|
|
|
|
}
|
|
|
|
if( p->deltaFl )
|
|
{
|
|
p->gateFl = !p->gateFl;
|
|
p->durSmpCnt = xn;
|
|
}
|
|
else
|
|
{
|
|
p->durSmpCnt += xn;
|
|
}
|
|
|
|
|
|
//p->rms = b1;
|
|
//printf("%f %f %i %f;\n",db,p->rms,p->deltaFl,b1);
|
|
|
|
return cmOkRC;
|
|
}
|
|
|
|
cmRC_t cmGateDetectExec( cmGateDetect* p, const cmSample_t* x, unsigned xn )
|
|
{
|
|
p->deltaFl = false;
|
|
p->rms = cmVOS_RMS(x,xn,xn);
|
|
cmReal_t db = p->rms==0 ? -100 : 20*log10(p->rms);
|
|
unsigned i;
|
|
cmSample_t d = 0;
|
|
|
|
// update the rms window
|
|
cmVOS_Shift(p->rmsV,p->rmsN,-1,p->rms);
|
|
|
|
// calc. derr of RMS
|
|
for(i=0; i<p->rmsN-1; ++i)
|
|
d += p->rmsV[i+1] - p->rmsV[i];
|
|
|
|
d /= p->rmsN;
|
|
|
|
// zero negative derr's
|
|
d = d<0 ? 0 : d;
|
|
|
|
// update the peak window
|
|
cmVOS_Shift(p->wndV,p->wndN,-1,d);
|
|
|
|
p->mean = cmVOS_Mean(p->wndV,p->wndN);
|
|
|
|
// if this is an offset
|
|
if( p->gateFl && db < p->offThreshDb )
|
|
{
|
|
p->gateFl = false;
|
|
p->deltaFl = true;
|
|
}
|
|
else
|
|
// if this may be an onset.
|
|
if( db > p->onThreshDb )
|
|
{
|
|
|
|
i = p->wndN - 2;
|
|
|
|
// if previous derr was a peak
|
|
if( p->wndV[i]>0 && p->wndV[i-1] < p->wndV[i] && p->wndV[i] > p->wndV[i+1] )
|
|
{
|
|
// and the peak is the largest value in the exteneded window
|
|
if( p->wndV[i] > p->mean )
|
|
{
|
|
p->deltaFl = true;
|
|
p->gateFl = true;
|
|
p->durSmpCnt = 0;
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
if( p->gateFl )
|
|
p->durSmpCnt += xn;
|
|
|
|
p->rms = p->d0;
|
|
p->d0 = d;
|
|
|
|
return cmOkRC;
|
|
}
|
|
|
|
//=======================================================================================================================
|
|
cmGateDetect2* cmGateDetectAlloc2( cmCtx* c, cmGateDetect2* p, unsigned procSmpCnt, const cmGateDetectParams* args )
|
|
{
|
|
cmGateDetect2* op = cmObjAlloc(cmGateDetect2, c, p );
|
|
|
|
if( procSmpCnt != 0 )
|
|
if( cmGateDetectInit2(op, procSmpCnt, args) != cmOkRC )
|
|
cmGateDetectFree2(&op);
|
|
return op;
|
|
|
|
}
|
|
|
|
cmRC_t cmGateDetectFree2( cmGateDetect2** pp )
|
|
{
|
|
cmRC_t rc;
|
|
|
|
if( pp==NULL || *pp == NULL )
|
|
return cmOkRC;
|
|
|
|
cmGateDetect2* p = *pp;
|
|
|
|
if((rc = cmGateDetectFinal2(p)) != cmOkRC )
|
|
return rc;
|
|
|
|
cmMemPtrFree(&p->medV);
|
|
cmObjFree(pp);
|
|
|
|
return cmOkRC;
|
|
|
|
}
|
|
|
|
cmRC_t cmGateDetectInit2( cmGateDetect2* p, unsigned procSmpCnt, const cmGateDetectParams* args )
|
|
{
|
|
cmRC_t rc;
|
|
if((rc = cmGateDetectFinal2(p)) != cmOkRC )
|
|
return rc;
|
|
|
|
unsigned pkCnt = 3;
|
|
|
|
unsigned eleCnt = 3*args->medCnt + args->avgCnt + args->suprCnt + args->offCnt + pkCnt;
|
|
unsigned i;
|
|
|
|
p->args = *args;
|
|
p->medV = cmMemResizeZ(cmSample_t,p->medV,eleCnt);
|
|
p->fcofV = p->medV + args->medCnt;
|
|
p->fdlyV = p->fcofV + args->medCnt;
|
|
p->avgV = p->fdlyV + args->medCnt;
|
|
p->suprV = p->avgV + args->avgCnt;
|
|
p->offV = p->suprV + args->suprCnt;
|
|
p->pkV = p->offV + args->offCnt;
|
|
|
|
assert( p->medV + eleCnt == p->pkV + pkCnt );
|
|
|
|
p->medIdx = 0;
|
|
p->avgIdx = 0;
|
|
p->suprIdx = args->suprCnt;
|
|
p->offIdx = 0;
|
|
|
|
p->pkFl = false;
|
|
p->gateFl = false;
|
|
p->onFl = false;
|
|
p->offFl = false;
|
|
|
|
cmGateDetectSetOnThreshDb2(p,args->onThreshDb);
|
|
cmGateDetectSetOnThreshDb2(p,args->offThreshDb);
|
|
|
|
p->fcofV[0] = 1.0;
|
|
for(i=1; i<args->medCnt; ++i)
|
|
{
|
|
p->fcofV[i] = (1.0 - 1.0/args->medCnt) / ( pow(2.0,i-1) );
|
|
//printf("%i %f ",i,p->fcofV[i]);
|
|
}
|
|
|
|
for(i=0; i<args->suprCnt; ++i)
|
|
{
|
|
p->suprV[i] = 1.0/pow(args->suprCoeff,i + 1.0);
|
|
//printf("%i %f ",i,p->suprV[i]);
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
cmRC_t cmGateDetectFinal2(cmGateDetect2* p )
|
|
{ return cmOkRC; }
|
|
|
|
void _cmGateDetectPickPeak( cmGateDetect2* p, cmSample_t input )
|
|
{
|
|
p->pkV[0] = p->pkV[1];
|
|
p->pkV[1] = p->pkV[2];
|
|
p->pkV[2] = input;
|
|
|
|
// if supression is active - apply it to the center pkV[]
|
|
if( p->suprIdx < p->args.suprCnt )
|
|
{
|
|
p->pkV[1] -= p->pkV[1] * p->suprV[p->suprIdx];
|
|
p->suprIdx = (p->suprIdx + 1) % p->args.suprCnt;
|
|
}
|
|
|
|
p->sup = p->pkV[1];
|
|
|
|
// if the center value in pkV[] is a local peak and above the onset threshold
|
|
if( p->pkV[1] > p->onThresh && p->pkV[0] < p->pkV[1] && p->pkV[1] > p->pkV[2] )
|
|
{
|
|
p->suprIdx = 0;
|
|
p->gateFl = true;
|
|
p->onFl = true;
|
|
}
|
|
|
|
// update the offset buffer
|
|
p->offV[p->offIdx] = fabs(p->pkV[2]);
|
|
p->offIdx = (p->offIdx + 1) % p->args.offCnt;
|
|
|
|
// if this is an offset
|
|
if( p->gateFl==true && cmVOS_Mean(p->offV,p->args.offCnt) < p->offThresh )
|
|
{
|
|
p->gateFl = false;
|
|
p->offFl = true;
|
|
}
|
|
|
|
}
|
|
|
|
void _cmGateDetectPickPeak2( cmGateDetect2* p, cmSample_t input )
|
|
{
|
|
// if supression is active - apply it to the input
|
|
if( p->suprIdx < p->args.suprCnt )
|
|
{
|
|
input -= input * p->suprV[p->suprIdx];
|
|
++p->suprIdx;// = (p->suprIdx + 1) % p->args.suprCnt;
|
|
}
|
|
|
|
// update the peak buffer
|
|
p->pkV[0] = p->pkV[1];
|
|
p->pkV[1] = p->pkV[2];
|
|
p->pkV[2] = input;
|
|
|
|
p->sup = input;
|
|
|
|
// if the signal increased above the threshold and is not already waiting for a peak
|
|
if( p->pkV[1] < input && input > p->onThresh && p->pkFl == false )
|
|
{
|
|
p->pkFl = true;
|
|
p->gateFl = true;
|
|
p->onFl = true;
|
|
}
|
|
|
|
// if the center value in pkV[] is a local peak and above the onset threshold ...
|
|
if( p->gateFl && p->pkFl && p->pkV[0] < p->pkV[1] && p->pkV[1] > p->pkV[2] )
|
|
{
|
|
p->suprIdx = 0; // ... turn on supression
|
|
p->pkFl = false; // ... not longer waiting for the peak
|
|
}
|
|
|
|
// update the offset buffer
|
|
p->offV[p->offIdx] = fabs(input);
|
|
p->offIdx = (p->offIdx + 1) % p->args.offCnt;
|
|
|
|
// if this is an offset
|
|
if( p->gateFl==true && cmVOS_Mean(p->offV,p->args.offCnt) < p->offThresh )
|
|
{
|
|
p->gateFl = false;
|
|
p->offFl = true;
|
|
p->pkFl = false;
|
|
}
|
|
|
|
}
|
|
|
|
cmRC_t cmGateDetectExec2( cmGateDetect2* p, const cmSample_t* x, unsigned xn )
|
|
{
|
|
p->rms = cmVOS_RMS(x,xn,xn); // take RMS of incoming window
|
|
p->medV[ p->medIdx ] = p->rms; // input RMS to median filter
|
|
p->medIdx = (p->medIdx + 1) % p->args.medCnt;
|
|
|
|
p->med = cmVOS_Median(p->medV,p->args.medCnt); // calc the median
|
|
p->dif = cmMax(0,p->rms - p->med); // dif = half_rect( rms - med )
|
|
p->avgV[ p->avgIdx ] = p->dif; // input dif to avg filter
|
|
p->avgIdx = (p->avgIdx + 1) % p->args.avgCnt;
|
|
|
|
p->avg = cmVOS_Mean(p->avgV,p->args.avgCnt); // calc the avg
|
|
p->ons = p->dif - p->avg; // ons = dif - avg
|
|
|
|
cmVOS_Shift(p->fdlyV,p->args.medCnt,1,p->ons);
|
|
p->flt = cmVOS_MultSumVV(p->fdlyV,p->fcofV,p->args.medCnt);
|
|
|
|
p->offFl = false;
|
|
p->onFl = false;
|
|
|
|
_cmGateDetectPickPeak2(p,p->flt);
|
|
|
|
return cmOkRC;
|
|
}
|
|
|
|
void _cmGateDetectSetDb2( cmGateDetect2* p, cmReal_t db, cmReal_t* dbPtr )
|
|
{
|
|
*dbPtr = pow(10.0, db/20.0 );
|
|
}
|
|
|
|
void cmGateDetectSetOnThreshDb2( cmGateDetect2* p, cmReal_t db )
|
|
{ _cmGateDetectSetDb2(p,db,&p->onThresh); }
|
|
|
|
void cmGateDetectSetOffThreshDb2( cmGateDetect2* p, cmReal_t db )
|
|
{ _cmGateDetectSetDb2(p,db,&p->offThresh); }
|
|
|
|
|
|
|
|
//=======================================================================================================================
|
|
|
|
cmAutoGain* cmAutoGainAlloc( cmCtx* c, cmAutoGain* p, unsigned procSmpCnt, cmReal_t srate, cmReal_t hopMs, unsigned chCnt, const cmGateDetectParams* gd_args )
|
|
{
|
|
cmAutoGain* op = cmObjAlloc(cmAutoGain, c, p );
|
|
|
|
op->sbp = cmShiftBufAlloc(c,NULL,0,0,0);
|
|
op->gdp = cmGateDetectAlloc2(c,NULL,0,NULL);
|
|
|
|
if( procSmpCnt != 0 )
|
|
if( cmAutoGainInit(op, procSmpCnt, srate, hopMs, chCnt, gd_args) != cmOkRC )
|
|
cmAutoGainFree(&op);
|
|
return op;
|
|
|
|
}
|
|
|
|
cmRC_t cmAutoGainFree( cmAutoGain** pp )
|
|
{
|
|
cmRC_t rc;
|
|
|
|
if( pp==NULL || *pp == NULL )
|
|
return cmOkRC;
|
|
|
|
cmAutoGain* p = *pp;
|
|
|
|
if((rc = cmAutoGainFinal(p)) != cmOkRC )
|
|
return rc;
|
|
|
|
cmMemPtrFree(&p->chArray);
|
|
p->chCnt = 0;
|
|
|
|
cmShiftBufFree(&p->sbp);
|
|
cmGateDetectFree2(&p->gdp);
|
|
|
|
cmObjFree(pp);
|
|
|
|
return cmOkRC;
|
|
|
|
}
|
|
|
|
cmRC_t cmAutoGainInit( cmAutoGain* p, unsigned procSmpCnt, cmReal_t srate, cmReal_t hopMs, unsigned chCnt, const cmGateDetectParams* gd_args )
|
|
{
|
|
unsigned i;
|
|
cmRC_t rc;
|
|
if((rc = cmAutoGainFinal(p)) != cmOkRC )
|
|
return rc;
|
|
|
|
unsigned hopSmpCnt = (unsigned)floor(srate * hopMs / 1000.0);
|
|
unsigned wndSmpCnt = hopSmpCnt * gd_args->medCnt;
|
|
|
|
cmShiftBufInit(p->sbp,procSmpCnt,wndSmpCnt,hopSmpCnt);
|
|
cmGateDetectInit2(p->gdp,procSmpCnt,gd_args);
|
|
|
|
p->chCnt = chCnt;
|
|
p->chArray = cmMemResizeZ(cmAutoGainCh,p->chArray,p->chCnt);
|
|
p->chp = NULL;
|
|
|
|
for(i=0; i<p->chCnt; ++i)
|
|
p->chArray[i].id = cmInvalidIdx;
|
|
|
|
return rc;
|
|
}
|
|
|
|
cmRC_t cmAutoGainFinal( cmAutoGain* p )
|
|
{ return cmOkRC;}
|
|
|
|
void _cmAutoGainChannelFinish( cmAutoGain* p )
|
|
{
|
|
if( p->chp != NULL )
|
|
{
|
|
if( p->gateMax != 0 )
|
|
{
|
|
p->gateSum += p->gateMax;
|
|
p->gateCnt += 1;
|
|
}
|
|
|
|
p->chp->gateMaxAvg = p->gateCnt == 0 ? 0.0 : p->gateSum / p->gateCnt;
|
|
}
|
|
|
|
}
|
|
|
|
cmRC_t cmAutoGainStartCh( cmAutoGain* p, unsigned id )
|
|
{
|
|
cmReal_t rmsMax = 1.0;
|
|
unsigned i;
|
|
|
|
if( id == cmInvalidIdx )
|
|
return cmOkRC;
|
|
|
|
// do intermediate channel calculations on the last selected channel
|
|
if( p->chp != NULL )
|
|
_cmAutoGainChannelFinish( p );
|
|
|
|
|
|
// if 'id' has already been used
|
|
// then select the associated channel as the current channel
|
|
// otherwise select the next avail channel as the current channel
|
|
for(i=0; i<p->chCnt; ++i)
|
|
if( p->chArray[i].id == id || p->chArray[i].id == cmInvalidId )
|
|
{
|
|
p->chp = p->chArray + i;
|
|
break;
|
|
}
|
|
|
|
|
|
if( p->chp == NULL )
|
|
return cmCtxRtCondition( &p->obj, cmArgAssertRC, "All channels are in use.");
|
|
|
|
|
|
p->chp->id = id;
|
|
p->gateCnt = 0;
|
|
p->gateSum = 0;
|
|
p->gateMax = 0;
|
|
p->minRms = rmsMax;
|
|
|
|
return cmOkRC;
|
|
}
|
|
|
|
// The goal of this process is to locate the max RMS value during
|
|
// the duration of each note. When all the notes have been processed for
|
|
// a given channel the average maximum value for all of the notes is
|
|
// then calculated.
|
|
cmRC_t cmAutoGainProcCh( cmAutoGain* p, const cmSample_t* x, unsigned xn )
|
|
{
|
|
// shift the new samples into the shift buffer
|
|
while(cmShiftBufExec(p->sbp,x,xn))
|
|
{
|
|
// update the gate detector
|
|
cmGateDetectExec2(p->gdp,p->sbp->outV,p->sbp->outN);
|
|
|
|
// write the output matrix file
|
|
//if( _cmPuWriteMtxFile(p,segFl) != kOkPuRC )
|
|
// goto errLabel;
|
|
|
|
// if this frame is an RMS minimum or onset or offset
|
|
// then select it as a possible segment end.
|
|
// Note that for onsets this will effectively force the end to
|
|
// come after the onset because the onset will not be an energy minimum
|
|
// relative to subsequent frames.
|
|
if( p->gdp->rms < p->minRms || p->gdp->onFl || p->gdp->offFl )
|
|
{
|
|
p->minRms = p->gdp->rms;
|
|
|
|
// count onsets
|
|
if( p->gdp->onFl )
|
|
++p->chp->onCnt;
|
|
|
|
// count offsets
|
|
if( p->gdp->offFl )
|
|
{
|
|
++p->chp->offCnt;
|
|
|
|
// update the gate sum and count
|
|
p->gateSum += p->gateMax;
|
|
p->gateCnt += 1;
|
|
p->gateMax = 0;
|
|
}
|
|
}
|
|
|
|
// track the max RMS value during this gate
|
|
if( p->gdp->gateFl && p->gdp->rms > p->gateMax )
|
|
p->gateMax = p->gdp->rms;
|
|
|
|
}
|
|
|
|
return cmOkRC;
|
|
}
|
|
|
|
cmRC_t cmAutoGainCalcGains( cmAutoGain* p )
|
|
{
|
|
unsigned i;
|
|
cmReal_t avg = 0;
|
|
|
|
if( p->chCnt == 0 )
|
|
return cmOkRC;
|
|
|
|
// verify that all channels were input
|
|
for(i=0; i<p->chCnt; ++i)
|
|
if( p->chArray[i].id == cmInvalidId )
|
|
break;
|
|
|
|
if( i != p->chCnt )
|
|
return cmCtxRtCondition( &p->obj, cmArgAssertRC, "All channels must be set prior to calculating gains.");
|
|
|
|
// process the last channel
|
|
_cmAutoGainChannelFinish(p);
|
|
|
|
// p->chp isn't used again unless we restart the indidual channel processing
|
|
p->chp = NULL;
|
|
|
|
|
|
for(i=0; i<p->chCnt; ++i)
|
|
avg += p->chArray[i].gateMaxAvg;
|
|
|
|
avg /= p->chCnt;
|
|
|
|
for(i=0; i<p->chCnt; ++i)
|
|
{
|
|
cmReal_t d = p->chArray[i].gateMaxAvg==0 ? 1.0 : p->chArray[i].gateMaxAvg;
|
|
p->chArray[i].gain = avg / d;
|
|
}
|
|
|
|
return cmOkRC;
|
|
}
|
|
|
|
void cmAutoGainPrint( cmAutoGain* p, cmRpt_t* rpt )
|
|
{
|
|
unsigned i=0;
|
|
for(i=0; i<p->chCnt; ++i)
|
|
{
|
|
cmAutoGainCh* chp = p->chArray + i;
|
|
cmRptPrintf(rpt,"midi:%3i %4s on:%i off:%i avg:%5.5f gain:%5.5f\n",
|
|
chp->id,
|
|
cmStringNullGuard(cmMidiToSciPitch(chp->id,NULL,0)),
|
|
chp->onCnt, chp->offCnt, chp->gateMaxAvg, chp->gain );
|
|
}
|
|
}
|
|
|
|
//==========================================================================================================================================
|
|
|
|
cmChCfg* cmChCfgAlloc( cmCtx* c, cmChCfg* p, cmCtx_t* ctx, const cmChar_t* fn )
|
|
{
|
|
cmChCfg* op = cmObjAlloc(cmChCfg, c, p );
|
|
|
|
if( fn != NULL )
|
|
if( cmChCfgInit( op, ctx, fn ) != cmOkRC )
|
|
cmChCfgFree(&op);
|
|
return op;
|
|
}
|
|
|
|
cmRC_t cmChCfgFree( cmChCfg** pp )
|
|
{
|
|
cmRC_t rc = cmOkRC;
|
|
|
|
if( pp == NULL || *pp == NULL )
|
|
return cmOkRC;
|
|
|
|
cmChCfg* p = *pp;
|
|
|
|
if((rc = cmChCfgFinal(p)) != cmOkRC )
|
|
return rc;
|
|
|
|
cmMemPtrFree(&p->chArray);
|
|
cmFsFreeFn(p->fn);
|
|
|
|
cmObjFree(pp);
|
|
|
|
return cmOkRC;
|
|
}
|
|
|
|
enum { kChColIdx, kSsiColIdx, kPitchColIdx, kMidiColIdx, kGainColIdx, kNsFlColIdx, kCdFlColIdx, kColCnt };
|
|
|
|
cmRC_t cmChCfgInit( cmChCfg* p, cmCtx_t* ctx, const cmChar_t* fn )
|
|
{
|
|
cmRC_t rc = cmOkRC;
|
|
unsigned i,j;
|
|
const cmChar_t* ch_array_label = "ch_array";
|
|
|
|
typedef struct
|
|
{
|
|
unsigned id;
|
|
const char* label;
|
|
} map_t;
|
|
|
|
map_t map[ kColCnt ] =
|
|
{
|
|
{ kChColIdx, "ch" },
|
|
{ kSsiColIdx, "ssi" },
|
|
{ kPitchColIdx, "pitch" },
|
|
{ kMidiColIdx, "midi" },
|
|
{ kGainColIdx, "gain" },
|
|
{ kNsFlColIdx, "ns_fl"},
|
|
{ kCdFlColIdx, "cd_fl"}
|
|
};
|
|
|
|
|
|
if((rc = cmChCfgFinal(p)) != cmOkRC )
|
|
return rc;
|
|
|
|
p->fn = cmFsMakeFn(cmFsPrefsDir(),fn,NULL,NULL);
|
|
|
|
// read the channel cfg JSON file
|
|
if( cmJsonInitializeFromFile(&p->jsH, p->fn, ctx ) != kOkJsRC )
|
|
{
|
|
rc = cmCtxRtCondition( &p->obj, cmSubSysFailRC, "JSON initialize failed on '%s'.",cmStringNullGuard(p->fn));
|
|
goto errLabel;
|
|
}
|
|
|
|
// locate the 'ch_array' node
|
|
if((p->cap = cmJsonFindValue( p->jsH, ch_array_label, cmJsonRoot(p->jsH), kArrayTId )) == NULL )
|
|
{
|
|
rc = cmCtxRtCondition( &p->obj, cmSubSysFailRC, "Unable to locate the JSON element '%s'.",ch_array_label);
|
|
goto errLabel;
|
|
}
|
|
|
|
unsigned rowCnt = cmJsonChildCount(p->cap);
|
|
|
|
// there must be at least 1 label row and 1 ch row
|
|
if( rowCnt < 2 )
|
|
{
|
|
rc = cmCtxRtCondition( &p->obj, cmSubSysFailRC, "The 'ch_array' appears to be empty.");
|
|
goto errLabel;
|
|
}
|
|
|
|
// allocate the ch array
|
|
p->chCnt = rowCnt - 1;
|
|
p->chArray = cmMemResizeZ( cmChCfgCh, p->chArray, p->chCnt );
|
|
p->nsChCnt = 0;
|
|
|
|
// read each row
|
|
for(i=0; i<rowCnt; ++i)
|
|
{
|
|
// get the array on row i
|
|
const cmJsonNode_t* np = cmJsonArrayElementC(p->cap,i);
|
|
|
|
// all row arrays contain 'kColCnt' elements
|
|
if( cmJsonChildCount(np) != kColCnt )
|
|
{
|
|
rc = cmCtxRtCondition( &p->obj, cmSubSysFailRC, "All 'ch_array' element at index %i does not contain %i values.",i,kColCnt);
|
|
goto errLabel;
|
|
}
|
|
|
|
// for each columns
|
|
for(j=0; j<kColCnt; ++j)
|
|
{
|
|
const cmJsonNode_t* cp = cmJsonArrayElementC(np,j);
|
|
|
|
// the first row contains the labels ....
|
|
if( i == 0 )
|
|
{
|
|
// verify that the column format is as expected
|
|
if( cmJsonIsString(cp)==false || strcmp(cp->u.stringVal,map[j].label) != 0 )
|
|
{
|
|
rc = cmCtxRtCondition( &p->obj, cmSubSysFailRC, "The first row column at index %i of 'ch_array' should be the label '%s'.",map[j].label);
|
|
goto errLabel;
|
|
}
|
|
}
|
|
else // ... other rows contain Ch Cfg's.
|
|
{
|
|
|
|
cmChCfgCh* chp = p->chArray + (i-1);
|
|
|
|
switch(j)
|
|
{
|
|
case kChColIdx: rc = cmJsonUIntValue( cp, &chp->ch ); break;
|
|
case kSsiColIdx: rc = cmJsonUIntValue( cp, &chp->ssi ); break;
|
|
case kPitchColIdx: rc = cmJsonStringValue( cp, &chp->pitchStr ); break;
|
|
case kMidiColIdx: rc = cmJsonUIntValue( cp, &chp->midi ); break;
|
|
case kGainColIdx: rc = cmJsonRealValue( cp, &chp->gain ); break;
|
|
case kNsFlColIdx:
|
|
rc = cmJsonBoolValue( cp, &chp->nsFl );
|
|
if( chp->nsFl )
|
|
++p->nsChCnt;
|
|
break;
|
|
|
|
case kCdFlColIdx: rc = cmJsonBoolValue( cp, &chp->cdFl ); break;
|
|
default:
|
|
{ assert(0); }
|
|
}
|
|
|
|
if( rc != kOkJsRC )
|
|
{
|
|
rc = cmCtxRtCondition( &p->obj, cmSubSysFailRC, "An error occurred while reading the '%s' column on row index:%i .", map[j].label,i);
|
|
goto errLabel;
|
|
}
|
|
|
|
}
|
|
}
|
|
}
|
|
|
|
errLabel:
|
|
|
|
return rc;
|
|
}
|
|
|
|
cmRC_t cmChCfgFinal( cmChCfg* p )
|
|
{
|
|
cmRC_t rc = cmOkRC;
|
|
|
|
if( cmJsonIsValid(p->jsH) )
|
|
if( cmJsonFinalize(&p->jsH) != kOkJsRC )
|
|
rc = cmCtxRtCondition( &p->obj, cmSubSysFailRC, "JSON finalize failed.");
|
|
|
|
return rc;
|
|
}
|
|
|
|
cmRC_t cmChCfgWrite( cmChCfg* p )
|
|
{
|
|
cmRC_t rc = cmOkRC;
|
|
unsigned i;
|
|
|
|
for(i=0; i<p->chCnt; ++i)
|
|
{
|
|
// get the array on row i+1
|
|
cmJsonNode_t* np = cmJsonArrayElement(p->cap,i+1);
|
|
|
|
// get the ele in the 'gainColIdx' column
|
|
np = cmJsonArrayElement(np,kGainColIdx);
|
|
|
|
assert( cmJsonIsReal(np) );
|
|
|
|
np->u.realVal = p->chArray[i].gain;
|
|
|
|
}
|
|
|
|
|
|
if( cmJsonWrite( p->jsH, cmJsonRoot(p->jsH), p->fn ) != kOkJsRC )
|
|
rc = cmCtxRtCondition( &p->obj, cmSubSysFailRC, "The JSON Channel Cfg file write failed on '%s'.",cmStringNullGuard(p->fn));
|
|
|
|
return rc;
|
|
}
|
|
|
|
void cmChCfgPrint( cmChCfg* p, cmRpt_t* rpt )
|
|
{
|
|
unsigned i;
|
|
for(i=0; i<p->chCnt; ++i)
|
|
{
|
|
const cmChCfgCh* chp = p->chArray + i;
|
|
cmRptPrintf(rpt,"%3i %3i %4s %3i %5.5f\n",chp->ch,chp->ssi,chp->pitchStr,chp->midi,chp->gain);
|
|
}
|
|
}
|
|
|
|
unsigned cmChCfgChannelCount( cmCtx_t* ctx, const cmChar_t* fn, unsigned* nsChCntPtr )
|
|
{
|
|
cmChCfg* ccp;
|
|
unsigned chCnt = 0;
|
|
cmCtx* c = cmCtxAlloc(NULL, &ctx->rpt, cmLHeapNullHandle, cmSymTblNullHandle );
|
|
|
|
if((ccp = cmChCfgAlloc(c, NULL, ctx, fn )) == NULL )
|
|
goto errLabel;
|
|
|
|
chCnt = ccp->chCnt;
|
|
|
|
if( nsChCntPtr != NULL )
|
|
*nsChCntPtr = ccp->nsChCnt;
|
|
|
|
cmChCfgFree(&ccp);
|
|
|
|
errLabel:
|
|
cmCtxFree(&c);
|
|
return chCnt;
|
|
}
|
|
|
|
unsigned cmChCfgChannelIndex( cmCtx_t* ctx, const cmChar_t* fn, unsigned chIdx )
|
|
{
|
|
cmChCfg* ccp;
|
|
unsigned retChIdx = -1;
|
|
cmCtx* c = cmCtxAlloc(NULL, &ctx->rpt, cmLHeapNullHandle, cmSymTblNullHandle );
|
|
|
|
if((ccp = cmChCfgAlloc(c, NULL, ctx, fn )) == NULL )
|
|
goto errLabel;
|
|
|
|
if( chIdx >= ccp->chCnt )
|
|
cmCtxRtCondition( &ccp->obj, cmArgAssertRC, "The channel index %i is not less than the channel count %i when querying '%s'.",chIdx,ccp->chCnt,cmStringNullGuard(ccp->fn));
|
|
else
|
|
retChIdx = ccp->chArray[chIdx].ch;
|
|
|
|
|
|
|
|
cmChCfgFree(&ccp);
|
|
|
|
errLabel:
|
|
cmCtxFree(&c);
|
|
return retChIdx;
|
|
}
|
|
|
|
|
|
//==========================================================================================================================================
|
|
cmChordDetect* cmChordDetectAlloc( cmCtx*c, cmChordDetect* p, cmReal_t srate, unsigned chCnt, cmReal_t maxTimeSpanMs, unsigned minNotesPerChord )
|
|
{
|
|
cmChordDetect* op = cmObjAlloc(cmChordDetect, c, p );
|
|
|
|
if( srate != 0 )
|
|
if( cmChordDetectInit( op, srate, chCnt, maxTimeSpanMs, minNotesPerChord ) != cmOkRC )
|
|
cmChordDetectFree(&op);
|
|
return op;
|
|
}
|
|
|
|
cmRC_t cmChordDetectFree( cmChordDetect** pp )
|
|
{
|
|
cmRC_t rc = cmOkRC;
|
|
|
|
if( pp == NULL || *pp == NULL )
|
|
return cmOkRC;
|
|
|
|
cmChordDetect* p = *pp;
|
|
|
|
if((rc = cmChordDetectFinal(p)) != cmOkRC )
|
|
return rc;
|
|
|
|
cmMemPtrFree(&p->chArray);
|
|
|
|
cmObjFree(pp);
|
|
|
|
return cmOkRC;
|
|
}
|
|
|
|
cmRC_t cmChordDetectInit( cmChordDetect* p, cmReal_t srate, unsigned chCnt, cmReal_t maxTimeSpanMs, unsigned minNotesPerChord )
|
|
{
|
|
cmRC_t rc;
|
|
if((rc = cmChordDetectFinal(p)) != cmOkRC )
|
|
return rc;
|
|
|
|
p->chArray = cmMemResizeZ(cmChordDetectCh, p->chArray, chCnt );
|
|
p->chCnt = chCnt;
|
|
p->minNotesPerChord = minNotesPerChord;
|
|
p->detectFl = false;
|
|
p->timeSmp = 0;
|
|
p->srate = srate;
|
|
cmChordDetectSetSpanMs(p,maxTimeSpanMs);
|
|
|
|
unsigned i;
|
|
for(i=0; i<p->chCnt; ++i)
|
|
p->chArray[i].readyFl = true;
|
|
|
|
return rc;
|
|
}
|
|
|
|
cmRC_t cmChordDetectFinal( cmChordDetect* P )
|
|
{ return cmOkRC; }
|
|
|
|
cmRC_t cmChordDetectExec( cmChordDetect* p, unsigned procSmpCnt, const bool* gateV, const cmReal_t* rmsV, unsigned chCnt )
|
|
{
|
|
assert( chCnt == p->chCnt );
|
|
|
|
chCnt = cmMin(chCnt,p->chCnt);
|
|
|
|
cmRC_t rc = cmOkRC;
|
|
unsigned candCnt = 0;
|
|
cmChordDetectCh* oldCand = NULL;
|
|
unsigned i;
|
|
|
|
p->detectFl = false;
|
|
p->timeSmp += procSmpCnt;
|
|
|
|
// update the readyFl's and candFl's based on onset and offsets
|
|
for(i=0; i<chCnt; ++i)
|
|
{
|
|
cmChordDetectCh* cp = p->chArray + i;
|
|
|
|
// if onset and the channel is ready
|
|
if( gateV[i] && cp->gateFl==false && cp->readyFl )
|
|
{
|
|
cp->candSmpTime = p->timeSmp;
|
|
cp->candRMS = rmsV[i];
|
|
cp->candFl = true;
|
|
}
|
|
|
|
// if offset then this channel is again ready to be a candidate
|
|
if( gateV[i]==false && cp->gateFl )
|
|
{
|
|
cp->readyFl = true;
|
|
}
|
|
|
|
cp->gateFl = gateV[i];
|
|
cp->chordFl = false;
|
|
}
|
|
|
|
// check if we have enough channels to form a chord and
|
|
// expire channels that have passed the max time out value
|
|
for(i=0; i<chCnt; ++i)
|
|
{
|
|
cmChordDetectCh* cp = p->chArray + i;
|
|
unsigned ageSmpCnt = p->timeSmp - cp->candSmpTime;
|
|
|
|
// if this is a candiate ...
|
|
if( cp->candFl )
|
|
{
|
|
// ... that has not expired
|
|
if( ageSmpCnt <= p->maxTimeSpanSmpCnt )
|
|
{
|
|
// track the oldest candidate
|
|
if( oldCand==NULL || cp->candSmpTime < oldCand->candSmpTime )
|
|
oldCand = cp;
|
|
|
|
++candCnt;
|
|
}
|
|
else // ... that has expired
|
|
{
|
|
cp->candFl = false;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
// If we have enough notes and the oldest candiate will expire on the next cycle.
|
|
// (By waiting for the oldest note to almost expire we gather the maximum number of
|
|
// possible notes given the time duration. If we remove this condition then
|
|
// we will tend to trigger chord detection with fewer notes.)
|
|
if( oldCand != NULL )
|
|
{
|
|
unsigned nextAge = p->timeSmp + procSmpCnt - oldCand->candSmpTime;
|
|
|
|
if( candCnt >= p->minNotesPerChord && nextAge >= p->maxTimeSpanSmpCnt )
|
|
{
|
|
for(i=0; i<chCnt; ++i)
|
|
{
|
|
cmChordDetectCh* cp = p->chArray + i;
|
|
if( cp->candFl )
|
|
{
|
|
cp->chordFl = true;
|
|
cp->candFl = false;
|
|
}
|
|
}
|
|
|
|
p->detectFl = true;
|
|
|
|
}
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
cmRC_t cmChordDetectSetSpanMs( cmChordDetect* p, cmReal_t maxTimeSpanMs )
|
|
{
|
|
p->maxTimeSpanSmpCnt = floor( maxTimeSpanMs * p->srate / 1000.0 );
|
|
return cmOkRC;
|
|
}
|
|
|
|
|
|
//==========================================================================================================================================
|
|
cmXfader* cmXfaderAlloc( cmCtx*c, cmXfader* p, cmReal_t srate, unsigned chCnt, cmReal_t fadeTimeMs )
|
|
{
|
|
cmXfader* op = cmObjAlloc(cmXfader, c, p );
|
|
|
|
if( srate != 0 )
|
|
if( cmXfaderInit( op, srate, chCnt, fadeTimeMs ) != cmOkRC )
|
|
cmXfaderFree(&op);
|
|
return op;
|
|
}
|
|
|
|
cmRC_t cmXfaderFree( cmXfader** pp )
|
|
{
|
|
cmRC_t rc = cmOkRC;
|
|
|
|
if( pp == NULL || *pp == NULL )
|
|
return cmOkRC;
|
|
|
|
cmXfader* p = *pp;
|
|
|
|
if((rc = cmXfaderFinal(p)) != cmOkRC )
|
|
return rc;
|
|
|
|
cmMemPtrFree(&p->chArray);
|
|
|
|
cmObjFree(pp);
|
|
|
|
return cmOkRC;
|
|
}
|
|
|
|
cmRC_t cmXfaderInit( cmXfader* p, cmReal_t srate, unsigned chCnt, cmReal_t fadeTimeMs )
|
|
{
|
|
cmRC_t rc;
|
|
if((rc = cmXfaderFinal(p)) != cmOkRC )
|
|
return rc;
|
|
|
|
p->chCnt = chCnt;
|
|
p->chArray = cmMemResizeZ(cmXfaderCh,p->chArray,p->chCnt);
|
|
p->srate = srate;
|
|
p->gateFl = false;
|
|
p->onFl = false;
|
|
p->offFl = false;
|
|
|
|
cmXfaderSetXfadeTime(p,fadeTimeMs);
|
|
|
|
return rc;
|
|
}
|
|
|
|
cmRC_t cmXfaderFinal( cmXfader* p )
|
|
{ return cmOkRC; }
|
|
|
|
cmRC_t cmXfaderExec( cmXfader* p, unsigned procSmpCnt, const bool* chGateV, unsigned chCnt )
|
|
{
|
|
assert( chCnt == p->chCnt);
|
|
chCnt = cmMin(chCnt,p->chCnt);
|
|
|
|
bool gateFl = false;
|
|
|
|
// gain change associated with procSmpCnt
|
|
//cmReal_t dgain = (cmReal_t)procSmpCnt / p->fadeSmpCnt;
|
|
cmReal_t i_dgain = (cmReal_t)procSmpCnt / p->fadeInSmpCnt;
|
|
cmReal_t o_dgain = (cmReal_t)procSmpCnt / p->fadeOutSmpCnt;
|
|
|
|
unsigned i;
|
|
// for each channel
|
|
for(i=0; i<chCnt; ++i)
|
|
{
|
|
cmXfaderCh* cp = p->chArray + i;
|
|
|
|
cp->onFl = false;
|
|
cp->offFl = false;
|
|
|
|
if( chGateV != NULL )
|
|
{
|
|
cp->onFl = chGateV[i] && !cp->gateFl; // notice fade-in transition begin
|
|
cp->gateFl = chGateV[i];
|
|
}
|
|
|
|
cmReal_t g = cp->gain;
|
|
|
|
if( cp->gateFl )
|
|
{
|
|
cp->gain = cmMin(cp->gain + i_dgain,1.0);
|
|
cp->ep_gain = sqrt(0.5 - 0.5 * cos(3.14159*cp->gain));
|
|
}
|
|
else
|
|
{
|
|
cp->gain = cmMax(cp->gain - o_dgain,0.0);
|
|
cp->ep_gain = sqrt(0.5 - 0.5 * cos(3.14159*cp->gain));
|
|
cp->offFl = g>0.0 && cp->gain==0.0; // notice fade-out transition end
|
|
}
|
|
|
|
if( cp->gain != 0.0 )
|
|
gateFl = true;
|
|
|
|
}
|
|
|
|
p->onFl = false;
|
|
p->offFl = false;
|
|
|
|
if( p->gateFl==false && gateFl==true )
|
|
p->onFl = true;
|
|
else
|
|
if( p->gateFl==true && gateFl==false )
|
|
p->offFl = true;
|
|
|
|
p->gateFl = gateFl;
|
|
|
|
return cmOkRC;
|
|
}
|
|
|
|
cmRC_t cmXfaderExecAudio( cmXfader* p, unsigned procSmpCnt, const bool* gateV, unsigned chCnt, const cmSample_t* x[], cmSample_t* y )
|
|
{
|
|
cmRC_t rc;
|
|
|
|
assert( chCnt == p->chCnt);
|
|
chCnt = cmMin(chCnt,p->chCnt);
|
|
|
|
if((rc = cmXfaderExec(p,procSmpCnt,gateV,chCnt)) != cmOkRC )
|
|
return rc;
|
|
|
|
unsigned i;
|
|
for(i=0; i<chCnt; ++i)
|
|
if( x[i] != NULL )
|
|
cmVOS_MultVaVS(y,procSmpCnt,x[i],p->chArray[i].ep_gain);
|
|
|
|
return rc;
|
|
}
|
|
|
|
void cmXfaderSetXfadeTime( cmXfader* p, cmReal_t fadeTimeMs )
|
|
{
|
|
p->fadeSmpCnt = floor(fadeTimeMs * p->srate /1000.0);
|
|
p->fadeInSmpCnt = p->fadeSmpCnt;
|
|
p->fadeOutSmpCnt = p->fadeSmpCnt;
|
|
}
|
|
|
|
void cmXfaderSetXfadeInTime( cmXfader* p, cmReal_t fadeTimeMs )
|
|
{
|
|
p->fadeInSmpCnt = floor(fadeTimeMs * p->srate /1000.0);
|
|
}
|
|
void cmXfaderSetXfadeOutTime( cmXfader* p, cmReal_t fadeTimeMs )
|
|
{
|
|
p->fadeOutSmpCnt = floor(fadeTimeMs * p->srate /1000.0);
|
|
}
|
|
|
|
void cmXfaderSelectOne( cmXfader* p, unsigned chIdx )
|
|
{
|
|
unsigned i = 0;
|
|
for(i=0; i<p->chCnt; ++i)
|
|
p->chArray[i].gateFl = i == chIdx;
|
|
}
|
|
|
|
void cmXfaderAllOff( cmXfader* p )
|
|
{
|
|
unsigned i = 0;
|
|
for(i=0; i<p->chCnt; ++i)
|
|
p->chArray[i].gateFl = false;
|
|
}
|
|
|
|
void cmXfaderJumpToDestinationGain( cmXfader* p )
|
|
{
|
|
unsigned i = 0;
|
|
for(i=0; i<p->chCnt; ++i)
|
|
{
|
|
if( p->chArray[i].gateFl )
|
|
p->chArray[i].gain = 1.0;
|
|
else
|
|
p->chArray[i].gain = 0.0;
|
|
|
|
p->chArray[i].onFl = false;
|
|
p->chArray[i].offFl = false;
|
|
p->chArray[i].ep_gain = p->chArray[i].gain;
|
|
}
|
|
}
|
|
|
|
//==========================================================================================================================================
|
|
cmFader* cmFaderAlloc( cmCtx*c, cmFader* p, cmReal_t srate, cmReal_t fadeTimeMs )
|
|
{
|
|
cmFader* op = cmObjAlloc(cmFader, c, p );
|
|
|
|
if( srate != 0 )
|
|
if( cmFaderInit( op, srate, fadeTimeMs ) != cmOkRC )
|
|
cmFaderFree(&op);
|
|
return op;
|
|
}
|
|
|
|
cmRC_t cmFaderFree( cmFader** pp )
|
|
{
|
|
cmRC_t rc = cmOkRC;
|
|
|
|
if( pp == NULL || *pp == NULL )
|
|
return cmOkRC;
|
|
|
|
cmFader* p = *pp;
|
|
|
|
if((rc = cmFaderFinal(p)) != cmOkRC )
|
|
return rc;
|
|
|
|
cmObjFree(pp);
|
|
|
|
return cmOkRC;
|
|
}
|
|
|
|
cmRC_t cmFaderInit( cmFader* p, cmReal_t srate, cmReal_t fadeTimeMs )
|
|
{
|
|
cmRC_t rc;
|
|
if((rc = cmFaderFinal(p)) != cmOkRC )
|
|
return rc;
|
|
|
|
p->srate = srate;
|
|
p->gain = 0.0;
|
|
cmFaderSetFadeTime(p,fadeTimeMs);
|
|
|
|
return rc;
|
|
}
|
|
|
|
cmRC_t cmFaderFinal( cmFader* p )
|
|
{ return cmOkRC; }
|
|
|
|
cmRC_t cmFaderExec( cmFader* p, unsigned procSmpCnt, bool gateFl, bool mixFl, const cmSample_t* x, cmSample_t* y )
|
|
{
|
|
cmReal_t d = (gateFl ? 1.0 : -1.0) * procSmpCnt / p->fadeSmpCnt;
|
|
|
|
// TODO: add fade curves
|
|
|
|
p->gain = cmMin(1.0,cmMax(0.0,p->gain + d));
|
|
|
|
if( x!=NULL && y!=NULL )
|
|
{
|
|
if( mixFl )
|
|
cmVOS_MultVaVS(y, procSmpCnt, x, 1.0/* p->gain*/);
|
|
else
|
|
cmVOS_MultVVS(y,procSmpCnt,x,p->gain);
|
|
}
|
|
|
|
return cmOkRC;
|
|
}
|
|
|
|
void cmFaderSetFadeTime( cmFader* p, cmReal_t fadeTimeMs )
|
|
{
|
|
p->fadeSmpCnt = (unsigned)floor( fadeTimeMs * p->srate / 1000.0 );
|
|
}
|
|
|
|
//=======================================================================================================================
|
|
cmCombFilt* cmCombFiltAlloc( cmCtx* c, cmCombFilt* p, cmReal_t srate, bool feedbackFl, cmReal_t minHz, cmReal_t alpha, cmReal_t hz, bool bypassFl )
|
|
{
|
|
cmCombFilt* op = cmObjAlloc(cmCombFilt, c, p );
|
|
|
|
op->idp = cmIDelayAlloc(c, NULL, 0, 0, NULL, NULL, NULL, 0 );
|
|
|
|
if( srate != 0 )
|
|
if( cmCombFiltInit( op, srate, feedbackFl, minHz, alpha, hz, bypassFl ) != cmOkRC )
|
|
cmCombFiltFree(&op);
|
|
|
|
return op;
|
|
}
|
|
|
|
cmRC_t cmCombFiltFree( cmCombFilt** pp)
|
|
{
|
|
cmRC_t rc = cmOkRC;
|
|
|
|
if( pp == NULL || *pp == NULL )
|
|
return cmOkRC;
|
|
|
|
cmCombFilt* p = *pp;
|
|
|
|
if((rc = cmCombFiltFinal(p)) != cmOkRC )
|
|
return rc;
|
|
|
|
cmMemFree(p->a);
|
|
cmMemFree(p->b);
|
|
cmMemFree(p->d);
|
|
|
|
cmIDelayFree(&p->idp);
|
|
|
|
cmObjFree(pp);
|
|
|
|
return cmOkRC;
|
|
|
|
}
|
|
|
|
cmRC_t cmCombFiltInit( cmCombFilt* p, cmReal_t srate, bool feedbackFl, cmReal_t minHz, cmReal_t alpha, cmReal_t hz, bool bypassFl )
|
|
{
|
|
cmRC_t rc;
|
|
if((rc = cmCombFiltFinal(p)) != cmOkRC )
|
|
return rc;
|
|
|
|
p->feedbackFl = feedbackFl;
|
|
|
|
p->dN = cmMax(1,floor(srate / minHz ));
|
|
p->d = cmMemResizeZ( cmReal_t, p->d, p->dN+1 );
|
|
p->a = cmMemResizeZ( cmReal_t, p->a, p->dN );
|
|
p->b = cmMemResizeZ( cmReal_t, p->b, p->dN );
|
|
|
|
p->dn = 1;
|
|
p->alpha = alpha;
|
|
p->srate = srate;
|
|
p->bypassFl = bypassFl;
|
|
|
|
cmReal_t tapMs = p->dn * 1000.0 / srate;
|
|
cmReal_t tapFf = 1.0;
|
|
cmReal_t tapFb = 1.0;
|
|
cmIDelayInit(p->idp, srate, p->dN * 1000.0 / srate, &tapMs, &tapFf, &tapFb, 1 );
|
|
|
|
cmCombFiltSetHz(p,hz);
|
|
|
|
return rc;
|
|
}
|
|
|
|
cmRC_t cmCombFiltFinal( cmCombFilt* p )
|
|
{ return cmOkRC; }
|
|
|
|
cmRC_t cmCombFiltExec( cmCombFilt* p, const cmSample_t* x, cmSample_t* y, unsigned n )
|
|
{
|
|
if( y == NULL )
|
|
return cmOkRC;
|
|
|
|
if( x == NULL )
|
|
{
|
|
cmVOS_Zero(y,n);
|
|
return cmOkRC;
|
|
}
|
|
|
|
if( p->bypassFl )
|
|
cmVOS_Copy(y,n,x);
|
|
else
|
|
cmIDelayExec(p->idp,x,y,n);
|
|
|
|
return cmOkRC;
|
|
}
|
|
|
|
void cmCombFiltSetAlpha( cmCombFilt* p, cmReal_t alpha )
|
|
{
|
|
p->b0 = 1.0 - fabs(alpha); // normalization coeff (could be applied directly to the input or output)
|
|
p->a[p->dn-1] = -alpha;
|
|
p->alpha = alpha;
|
|
|
|
p->idp->tff[0] = p->b0;
|
|
p->idp->tfb[0] = -alpha;
|
|
|
|
}
|
|
|
|
cmRC_t cmCombFiltSetHz( cmCombFilt* p, cmReal_t hz )
|
|
{
|
|
if( hz < p->minHz )
|
|
return cmCtxRtCondition( &p->obj, cmInvalidArgRC, "The comb filter frequency %f Hz is invalid given the minimum frequency setting of %f Hz.",hz,p->minHz );
|
|
|
|
// clear the current alpha
|
|
p->a[p->dn-1] = 0;
|
|
|
|
// change location of alpha in p->a[]
|
|
p->dn = cmMin(p->dN-1,cmMax(1,floor(p->srate / hz )));
|
|
|
|
p->hz = hz;
|
|
|
|
cmCombFiltSetAlpha(p,p->alpha); // the location of filter coeff changed - reset it here
|
|
|
|
cmIDelaySetTapMs(p->idp, 0,p->dn * 1000.0 / p->srate );
|
|
|
|
return cmOkRC;
|
|
}
|
|
|
|
//=======================================================================================================================
|
|
cmDcFilt* cmDcFiltAlloc( cmCtx* c, cmDcFilt* p, bool bypassFl )
|
|
{
|
|
cmDcFilt* op = cmObjAlloc(cmDcFilt, c, p );
|
|
|
|
if( cmDcFiltInit( op, bypassFl ) != cmOkRC )
|
|
cmDcFiltFree(&op);
|
|
return op;
|
|
}
|
|
|
|
cmRC_t cmDcFiltFree( cmDcFilt** pp)
|
|
{
|
|
cmRC_t rc = cmOkRC;
|
|
|
|
if( pp == NULL || *pp == NULL )
|
|
return cmOkRC;
|
|
|
|
cmDcFilt* p = *pp;
|
|
|
|
if((rc = cmDcFiltFinal(p)) != cmOkRC )
|
|
return rc;
|
|
|
|
cmObjFree(pp);
|
|
|
|
return cmOkRC;
|
|
|
|
}
|
|
|
|
cmRC_t cmDcFiltInit( cmDcFilt* p, bool bypassFl )
|
|
{
|
|
cmRC_t rc;
|
|
if((rc = cmDcFiltFinal(p)) != cmOkRC )
|
|
return rc;
|
|
|
|
p->b0 = 1;
|
|
p->b[0] = -1;
|
|
p->a[0] = -0.999;
|
|
p->d[0] = 0;
|
|
p->d[1] = 0;
|
|
p->bypassFl = bypassFl;
|
|
return rc;
|
|
}
|
|
|
|
cmRC_t cmDcFiltFinal( cmDcFilt* p )
|
|
{ return cmOkRC; }
|
|
|
|
cmRC_t cmDcFiltExec( cmDcFilt* p, const cmSample_t* x, cmSample_t* y, unsigned n )
|
|
{
|
|
if( p->bypassFl )
|
|
cmVOS_Copy(y,n,x);
|
|
else
|
|
cmVOS_Filter(y,n,x,n,p->b0, p->b, p->a, p->d, 1 );
|
|
|
|
return cmOkRC;
|
|
}
|
|
|
|
//=======================================================================================================================
|
|
cmIDelay* cmIDelayAlloc( cmCtx* c, cmIDelay* p, cmReal_t srate, cmReal_t maxDelayMs, const cmReal_t* tapMs, const cmReal_t* tapFfGain, const cmReal_t* tapFbGain, unsigned tapCnt )
|
|
{
|
|
cmIDelay* op = cmObjAlloc(cmIDelay, c, p );
|
|
|
|
if( srate != 0 )
|
|
if( cmIDelayInit( op, srate, maxDelayMs, tapMs, tapFfGain, tapFbGain, tapCnt ) != cmOkRC )
|
|
cmIDelayFree(&op);
|
|
return op;
|
|
}
|
|
|
|
cmRC_t cmIDelayFree( cmIDelay** pp )
|
|
{
|
|
cmRC_t rc = cmOkRC;
|
|
|
|
if( pp == NULL || *pp == NULL )
|
|
return cmOkRC;
|
|
|
|
cmIDelay* p = *pp;
|
|
|
|
if((rc = cmIDelayFinal(p)) != cmOkRC )
|
|
return rc;
|
|
|
|
cmMemFree(p->m);
|
|
cmMemFree(p->ti);
|
|
cmMemFree(p->tff);
|
|
cmMemFree(p->tfb);
|
|
cmObjFree(pp);
|
|
|
|
return cmOkRC;
|
|
}
|
|
|
|
cmRC_t cmIDelayInit( cmIDelay* p, cmReal_t srate, cmReal_t maxDelayMs, const cmReal_t* tapMs, const cmReal_t* tapFfGain, const cmReal_t* tapFbGain, unsigned tapCnt )
|
|
{
|
|
cmRC_t rc;
|
|
if(( rc = cmIDelayFinal(p)) != cmOkRC )
|
|
return rc;
|
|
|
|
p->dn = (unsigned)floor( maxDelayMs * srate / 1000.0 );
|
|
p->mn = p->dn + 3;
|
|
p->m = cmMemResizeZ(cmSample_t,p->m,p->mn);
|
|
p->d = p->m + 1;
|
|
p->tn = tapCnt;
|
|
p->ti = cmMemResize(cmReal_t,p->ti,tapCnt);
|
|
p->tff = cmMemResize(cmReal_t,p->tff,tapCnt);
|
|
p->tfb = cmMemResize(cmReal_t,p->tfb,tapCnt);
|
|
p->srate = srate;
|
|
|
|
unsigned i;
|
|
for(i=0; i<tapCnt; ++i)
|
|
{
|
|
cmIDelaySetTapMs(p,i,tapMs[i]);
|
|
p->tff[i] = tapFfGain[i];
|
|
p->tfb[i] = tapFbGain[i];
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
cmRC_t cmIDelayFinal(cmIDelay* p )
|
|
{ return cmOkRC; }
|
|
|
|
cmRC_t cmIDelayExec( cmIDelay* p, const cmSample_t* x, cmSample_t* y, unsigned n )
|
|
{
|
|
unsigned i,j;
|
|
for(i=0; i<n; ++i)
|
|
{
|
|
cmSample_t fb = 0;
|
|
y[i] = 0;
|
|
|
|
|
|
// calculate the output sample
|
|
for(j=0; j<p->tn; ++j)
|
|
{
|
|
// get tap_j
|
|
cmReal_t tfi = p->ii - p->ti[j];
|
|
|
|
// mod it into 0:dn-1
|
|
while( tfi < 0 )
|
|
tfi += p->dn;
|
|
|
|
int ti = floor(tfi);
|
|
cmReal_t tf = tfi - ti;
|
|
cmSample_t v = _lin_interp(tf,p->d[ti],p->d[ti+1]); // _cube_interp(tf,p->d[ti-1],p->d[ti],p->d[ti+1],p->d[ti+2]);
|
|
|
|
y[i] += p->tff[j] * v;
|
|
fb += p->tfb[j] * v;
|
|
}
|
|
|
|
// insert incoming sample
|
|
p->d[p->ii] = x[i] + fb;
|
|
|
|
// advance the delay line
|
|
++p->ii;
|
|
|
|
// handle beg/end delay sample duplication
|
|
// -1 0 1 2 .... dn-1 dn dn+1
|
|
// a b c a b c
|
|
// The samples at position -1 0 1 must be duplicated
|
|
// at positions dn-1,dn,dn+1 so that output sample calculation
|
|
// does not need to deal with buffer wrap-around issues.
|
|
|
|
if( p->ii == 1 )
|
|
p->d[p->dn] = x[i];
|
|
else
|
|
if( p->ii == 2 )
|
|
p->d[p->dn+1] = x[i];
|
|
else
|
|
if( p->ii == p->dn )
|
|
{
|
|
p->d[-1] = x[i];
|
|
p->ii = 0;
|
|
}
|
|
}
|
|
|
|
return cmOkRC;
|
|
}
|
|
|
|
cmRC_t cmIDelaySetTapMs( cmIDelay* p, unsigned tapIdx, cmReal_t tapMs )
|
|
{
|
|
cmRC_t rc = cmOkRC;
|
|
|
|
if( tapIdx < p->tn )
|
|
p->ti[tapIdx] = tapMs * p->srate / 1000.0;
|
|
else
|
|
rc = cmCtxRtCondition( &p->obj, cmInvalidArgRC, "Tap index %i is out of range 0 - %i.",tapIdx,p->tn-1 );
|
|
|
|
return rc;
|
|
}
|
|
|
|
|
|
//=======================================================================================================================
|
|
|
|
cmGroupSel* cmGroupSelAlloc( cmCtx* c, cmGroupSel* p, unsigned chCnt, unsigned groupCnt, unsigned chsPerGroup )
|
|
{
|
|
cmGroupSel* op = cmObjAlloc(cmGroupSel, c, p );
|
|
|
|
if( chCnt != 0 )
|
|
if( cmGroupSelInit( op, chCnt, groupCnt, chsPerGroup ) != cmOkRC )
|
|
cmGroupSelFree(&op);
|
|
return op;
|
|
|
|
}
|
|
|
|
cmRC_t cmGroupSelFree( cmGroupSel** pp )
|
|
{
|
|
cmRC_t rc = cmOkRC;
|
|
|
|
if( pp == NULL || *pp == NULL )
|
|
return cmOkRC;
|
|
|
|
cmGroupSel* p = *pp;
|
|
|
|
if((rc = cmGroupSelFinal(p)) != cmOkRC )
|
|
return rc;
|
|
|
|
cmMemFree(p->groupArray);
|
|
cmMemFree(p->chArray);
|
|
cmObjFree(pp);
|
|
|
|
return cmOkRC;
|
|
|
|
}
|
|
|
|
cmRC_t cmGroupSelInit( cmGroupSel* p, unsigned chCnt, unsigned groupCnt, unsigned chsPerGroup )
|
|
{
|
|
cmRC_t rc;
|
|
if((rc = cmGroupSelFinal(p)) != cmOkRC )
|
|
return rc;
|
|
|
|
p->chArray = cmMemResizeZ(cmGroupSelCh,p->chArray,chCnt);
|
|
p->groupArray = cmMemResizeZ(cmGroupSelGrp,p->groupArray,chCnt);
|
|
p->chCnt = chCnt;
|
|
p->groupCnt = groupCnt;
|
|
p->chsPerGroup = chsPerGroup;
|
|
|
|
unsigned i;
|
|
for(i=0; i<p->chCnt; ++i)
|
|
p->chArray[i].groupIdx = cmInvalidIdx;
|
|
|
|
for(i=0; i<p->groupCnt; ++i)
|
|
{
|
|
p->groupArray[i].chIdxArray = cmMemAllocZ(unsigned, p->chCnt);
|
|
p->groupArray[i].chIdxCnt = 0;
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
cmRC_t cmGroupSelFinal( cmGroupSel* p )
|
|
{
|
|
unsigned i;
|
|
|
|
for(i=0; i<p->groupCnt; ++i)
|
|
cmMemFree(p->groupArray[i].chIdxArray);
|
|
|
|
return cmOkRC;
|
|
}
|
|
|
|
cmRC_t cmGroupSetChannelGate( cmGroupSel* p, unsigned chIdx, bool gateFl )
|
|
{
|
|
assert(chIdx <p->chCnt);
|
|
cmGroupSelCh* cp = p->chArray + chIdx;
|
|
|
|
if( gateFl==true && cp->gateFl==false )
|
|
{
|
|
cp->readyFl = true;
|
|
}
|
|
|
|
if( gateFl==false && cp->gateFl==true )
|
|
{
|
|
cp->offsetFl = true;
|
|
cp->readyFl = false;
|
|
}
|
|
|
|
|
|
cp->gateFl = gateFl;
|
|
|
|
//printf("ch:%i gate:%i ready:%i offset:%i grp:%i\n",chIdx,cp->gateFl,cp->readyFl,cp->offsetFl,cp->groupIdx);
|
|
|
|
return cmOkRC;
|
|
}
|
|
|
|
cmRC_t cmGroupSetChannelRMS( cmGroupSel* p, unsigned chIdx, cmReal_t rms )
|
|
{
|
|
assert(chIdx <p->chCnt);
|
|
cmGroupSelCh* cp = p->chArray + chIdx;
|
|
cp->rms = rms;
|
|
return cmOkRC;
|
|
}
|
|
|
|
cmRC_t cmGroupSelExec( cmGroupSel* p )
|
|
{
|
|
unsigned i,j;
|
|
unsigned availGroupCnt = 0;
|
|
|
|
p->chsPerGroup = cmMin( p->chsPerGroup, p->chCnt );
|
|
|
|
p->updateFl = false;
|
|
|
|
// clear the create and release flags on each group
|
|
// and get the count of available groups
|
|
for(i=0; i<p->groupCnt; ++i)
|
|
{
|
|
cmGroupSelGrp* gp = p->groupArray + i;
|
|
|
|
gp->createFl = false;
|
|
|
|
if( gp->releaseFl )
|
|
{
|
|
// clear the groupIdx from the channels assigned to this released group
|
|
for(j=0; j<gp->chIdxCnt; ++j)
|
|
p->chArray[ gp->chIdxArray[j] ].groupIdx = cmInvalidIdx;
|
|
|
|
gp->releaseFl = false;
|
|
gp->chIdxCnt = 0;
|
|
}
|
|
|
|
if( gp->chIdxCnt == 0 )
|
|
++availGroupCnt;
|
|
}
|
|
|
|
// count the number of ready but unassigned ch's and
|
|
// release any groups which contain a channel with a gate offset
|
|
unsigned readyChCnt = 0;
|
|
|
|
for(i=0; i<p->chCnt; ++i)
|
|
{
|
|
cmGroupSelCh* cp = p->chArray + i;
|
|
|
|
// count the number of channels that are ready to be assigned
|
|
if( cp->readyFl )
|
|
++readyChCnt;
|
|
|
|
// if this channel offset and it had been assigned to a group
|
|
// then mark its group for release
|
|
if( cp->offsetFl && cp->groupIdx != cmInvalidIdx )
|
|
{
|
|
p->groupArray[cp->groupIdx].releaseFl = true;
|
|
|
|
p->updateFl = true;
|
|
}
|
|
}
|
|
|
|
|
|
// assign ready ch's to available groups
|
|
while( readyChCnt > p->chsPerGroup && availGroupCnt > 0 )
|
|
{
|
|
unsigned groupIdx;
|
|
|
|
// locate an available group
|
|
for(groupIdx=0; groupIdx<p->groupCnt; ++groupIdx)
|
|
if( p->groupArray[groupIdx].chIdxCnt == 0 )
|
|
break;
|
|
|
|
if( groupIdx == p->groupCnt )
|
|
break;
|
|
|
|
--availGroupCnt;
|
|
|
|
cmGroupSelGrp* gp = p->groupArray + groupIdx;
|
|
|
|
printf("gs - group:%i chs: ",groupIdx);
|
|
|
|
// assign chsPerGroup ch's to this group
|
|
for(i=0; i<p->chCnt && gp->chIdxCnt < p->chsPerGroup; ++i)
|
|
if(p->chArray[i].readyFl )
|
|
{
|
|
p->chArray[i].readyFl = false; // this ch is no longer ready because it is assigned
|
|
p->chArray[i].groupIdx = groupIdx; // set this ch's group idx
|
|
gp->chIdxArray[ gp->chIdxCnt ] = i; // assign channel to group
|
|
gp->chIdxCnt += 1; // update the group ch count
|
|
gp->createFl = true;
|
|
p->updateFl = true;
|
|
--readyChCnt;
|
|
printf("%i ",i);
|
|
}
|
|
|
|
printf("\n");
|
|
|
|
}
|
|
|
|
return cmOkRC;
|
|
}
|
|
|
|
//=======================================================================================================================
|
|
|
|
cmAudioNofM* cmAudioNofMAlloc( cmCtx* c, cmAudioNofM* p, cmReal_t srate, unsigned inChCnt, unsigned outChCnt, cmReal_t fadeTimeMs )
|
|
{
|
|
cmAudioNofM* op = cmObjAlloc(cmAudioNofM, c, p );
|
|
|
|
if( srate != 0 )
|
|
if( cmAudioNofMInit( op, srate, inChCnt, outChCnt, fadeTimeMs ) != cmOkRC )
|
|
cmAudioNofMFree(&op);
|
|
return op;
|
|
}
|
|
|
|
cmRC_t cmAudioNofMFree( cmAudioNofM** pp )
|
|
{
|
|
cmRC_t rc = cmOkRC;
|
|
|
|
if( pp == NULL || *pp == NULL )
|
|
return cmOkRC;
|
|
|
|
cmAudioNofM* p = *pp;
|
|
|
|
if((rc = cmAudioNofMFinal(p)) != cmOkRC )
|
|
return rc;
|
|
|
|
cmMemFree(p->outArray);
|
|
cmMemFree(p->inArray);
|
|
cmObjFree(pp);
|
|
|
|
return cmOkRC;
|
|
}
|
|
|
|
cmRC_t cmAudioNofMInit( cmAudioNofM* p, cmReal_t srate, unsigned iChCnt, unsigned oChCnt, cmReal_t fadeTimeMs )
|
|
{
|
|
cmRC_t rc;
|
|
if((rc = cmAudioNofMFinal(p)) != cmOkRC )
|
|
return rc;
|
|
|
|
p->iChCnt = iChCnt;
|
|
p->inArray = cmMemResizeZ(cmAudioNofM_In,p->inArray,iChCnt);
|
|
p->oChCnt = oChCnt;
|
|
p->outArray = cmMemResizeZ(cmAudioNofM_Out,p->outArray,oChCnt);
|
|
p->nxtOutChIdx = 0;
|
|
|
|
unsigned i;
|
|
for(i=0; i<p->iChCnt; ++i)
|
|
{
|
|
p->inArray[i].fader = cmFaderAlloc(p->obj.ctx, NULL, srate, fadeTimeMs );
|
|
p->inArray[i].outChIdx = cmInvalidIdx;
|
|
}
|
|
|
|
cmAudioNofMSetFadeMs( p, fadeTimeMs );
|
|
|
|
return rc;
|
|
}
|
|
|
|
cmRC_t cmAudioNofMFinal( cmAudioNofM* p )
|
|
{
|
|
unsigned i;
|
|
for(i=0; i<p->iChCnt; ++i)
|
|
cmFaderFree(&p->inArray[i].fader);
|
|
return cmOkRC;
|
|
}
|
|
|
|
cmRC_t cmAudioNofMSetChannelGate( cmAudioNofM* p, unsigned inChIdx, bool gateFl )
|
|
{
|
|
assert( inChIdx < p->iChCnt );
|
|
|
|
cmAudioNofM_In* ip = p->inArray + inChIdx;
|
|
|
|
if( ip->gateFl && gateFl == false )
|
|
ip->offsetFl = true;
|
|
|
|
if( ip->gateFl == false && gateFl )
|
|
ip->onsetFl = true;
|
|
|
|
ip->gateFl = gateFl;
|
|
|
|
printf("nom: %p ch:%i gate:%i on:%i off:%i\n",p,inChIdx,ip->gateFl,ip->offsetFl,ip->onsetFl);
|
|
|
|
return cmOkRC;
|
|
}
|
|
|
|
cmRC_t cmAudioNofMExec( cmAudioNofM* p, const cmSample_t* x[], unsigned inChCnt, cmSample_t* y[], unsigned outChCnt, unsigned n )
|
|
{
|
|
assert( inChCnt == p->iChCnt && outChCnt == p->oChCnt );
|
|
|
|
unsigned i;
|
|
|
|
// for each output channel
|
|
for(i=0; i<p->oChCnt; ++i)
|
|
{
|
|
cmAudioNofM_Out* op = p->outArray + i;
|
|
cmAudioNofM_In* ip = op->list;
|
|
cmAudioNofM_In* pp = NULL;
|
|
|
|
// for each input assigned to this output chanenl
|
|
while( ip != NULL )
|
|
{
|
|
// if the channel is no longer active
|
|
if( ip->offsetFl && ip->fader->gain == 0.0 )
|
|
{
|
|
printf("nom: off - out:%i\n",ip->outChIdx);
|
|
|
|
// remove it from the output channels list
|
|
ip->offsetFl = false;
|
|
ip->outChIdx = cmInvalidIdx;
|
|
|
|
if( pp == NULL )
|
|
op->list = ip->link;
|
|
else
|
|
pp->link = ip->link;
|
|
|
|
|
|
}
|
|
|
|
pp = ip;
|
|
ip = ip->link;
|
|
}
|
|
|
|
}
|
|
|
|
// for each input channel
|
|
for(i=0; i<inChCnt; ++i)
|
|
{
|
|
cmAudioNofM_In* ip = p->inArray + i;
|
|
|
|
// if this channel is starting
|
|
if( ip->onsetFl == true && ip->offsetFl == false )
|
|
{
|
|
// assign it to the next output channel
|
|
ip->onsetFl = false;
|
|
ip->outChIdx = p->nxtOutChIdx;
|
|
|
|
ip->link = p->outArray[ ip->outChIdx ].list;
|
|
p->outArray[ ip->outChIdx ].list = ip;
|
|
|
|
p->nxtOutChIdx = (p->nxtOutChIdx + 1) % p->oChCnt;
|
|
|
|
printf("nom: on - in:%i out:%i\n",i,ip->outChIdx);
|
|
}
|
|
|
|
// if this channel is active - then mix its input
|
|
if( ip->outChIdx != cmInvalidIdx )
|
|
{
|
|
cmFaderExec( ip->fader, n, ip->gateFl, true, x[i], y[ ip->outChIdx ] );
|
|
|
|
}
|
|
}
|
|
return cmOkRC;
|
|
}
|
|
|
|
cmRC_t cmAudioNofMSetFadeMs( cmAudioNofM* p, cmReal_t fadeTimeMs )
|
|
{
|
|
unsigned i;
|
|
for(i=0; i<p->iChCnt; ++i)
|
|
cmFaderSetFadeTime(p->inArray[i].fader,fadeTimeMs);
|
|
return cmOkRC;
|
|
}
|
|
|
|
|
|
//=======================================================================================================================
|
|
cmAdsr* cmAdsrAlloc( cmCtx* c, cmAdsr* p, cmReal_t srate, bool trigFl, cmReal_t minL, cmReal_t dlyMs, cmReal_t atkMs, cmReal_t atkL, cmReal_t dcyMs, cmReal_t susMs, cmReal_t susL, cmReal_t rlsMs )
|
|
{
|
|
cmAdsr* op = cmObjAlloc(cmAdsr, c, p );
|
|
|
|
if( srate != 0 )
|
|
if( cmAdsrInit( op, srate, trigFl, minL, dlyMs, atkMs, atkL, dcyMs, susMs, susL, rlsMs ) != cmOkRC )
|
|
cmAdsrFree(&op);
|
|
return op;
|
|
|
|
}
|
|
|
|
cmRC_t cmAdsrFree( cmAdsr** pp )
|
|
{
|
|
cmRC_t rc = cmOkRC;
|
|
|
|
if( pp == NULL || *pp == NULL )
|
|
return cmOkRC;
|
|
|
|
cmAdsr* p = *pp;
|
|
|
|
if((rc = cmAdsrFinal(p)) != cmOkRC )
|
|
return rc;
|
|
|
|
cmObjFree(pp);
|
|
|
|
return cmOkRC;
|
|
|
|
}
|
|
|
|
cmRC_t cmAdsrInit( cmAdsr* p, cmReal_t srate, bool trigFl, cmReal_t minL, cmReal_t dlyMs, cmReal_t atkMs, cmReal_t atkL, cmReal_t dcyMs, cmReal_t susMs, cmReal_t susL, cmReal_t rlsMs )
|
|
{
|
|
cmRC_t rc;
|
|
if((rc = cmAdsrFinal(p)) != cmOkRC )
|
|
return rc;
|
|
|
|
// this is a limitation of the design - the design should be replaced with one
|
|
// which increments/decrements the level until it reaches a limit instead of calculating
|
|
// durations
|
|
//assert(atkL>=0 && minL>=0);
|
|
|
|
p->srate = srate;
|
|
p->trigModeFl = trigFl;
|
|
p->levelMin = minL;
|
|
p->scaleDur = 1.0;
|
|
|
|
cmAdsrSetTime(p,dlyMs,kDlyAdsrId);
|
|
cmAdsrSetTime(p,atkMs,kAtkAdsrId);
|
|
cmAdsrSetTime(p,dcyMs,kDcyAdsrId);
|
|
cmAdsrSetTime(p,susMs,kSusAdsrId);
|
|
cmAdsrSetTime(p,rlsMs,kRlsAdsrId);
|
|
|
|
cmAdsrSetLevel(p,atkL,kAtkAdsrId);
|
|
cmAdsrSetLevel(p,susL,kSusAdsrId);
|
|
|
|
p->state = kDoneAdsrId;
|
|
p->durSmp = 0;
|
|
p->level = p->levelMin;
|
|
p->gateFl = false;
|
|
|
|
p->atkDurSmp = 0;
|
|
p->rlsDurSmp = 0;
|
|
|
|
|
|
return cmOkRC;
|
|
}
|
|
|
|
cmRC_t cmAdsrFinal( cmAdsr* p )
|
|
{ return cmOkRC; }
|
|
|
|
cmReal_t cmAdsrExec( cmAdsr* p, unsigned procSmpCnt, bool gateFl, cmReal_t tscale, cmReal_t ascale )
|
|
{
|
|
double scaleAmp = ascale;
|
|
double scaleDur = tscale;
|
|
|
|
// if onset
|
|
if( p->gateFl == false && gateFl==true )
|
|
{
|
|
p->scaleDur = scaleDur==0 ? 1.0 : fabs(scaleDur);
|
|
|
|
|
|
//printf("sd:%f %f\n",scaleDur,scaleAmp);
|
|
|
|
switch( p->state )
|
|
{
|
|
case kDlyAdsrId:
|
|
// if in delay mode when the re-attack occurs don't do anything
|
|
break;
|
|
|
|
case kAtkAdsrId:
|
|
case kDcyAdsrId:
|
|
case kSusAdsrId:
|
|
case kRlsAdsrId:
|
|
// if the atk level == 0 then fall through to kDoneAdsrId
|
|
if( p->actAtkLevel != 0 )
|
|
{
|
|
// re-attak mode:
|
|
// Scale the attack time to the current level relative to the attack level.
|
|
// In general this will result in a decrease in the attack duration.
|
|
p->atkDurSmp = cmMax(1,floor(p->atkSmp * (p->actAtkLevel - p->level) / p->actAtkLevel));
|
|
p->atkBegLevel = p->level;
|
|
p->durSmp = 0;
|
|
p->state = kAtkAdsrId;
|
|
p->actAtkLevel = p->atkLevel * scaleAmp;
|
|
p->actSusLevel = p->susLevel * scaleAmp;
|
|
break;
|
|
}
|
|
|
|
case kDoneAdsrId:
|
|
p->atkBegLevel = p->levelMin;
|
|
p->atkDurSmp = p->atkSmp;
|
|
p->state = p->dlySmp == 0 ? kAtkAdsrId : kDlyAdsrId;
|
|
p->durSmp = 0;
|
|
p->actAtkLevel = p->atkLevel * scaleAmp;
|
|
p->actSusLevel = p->susLevel * scaleAmp;
|
|
break;
|
|
|
|
default:
|
|
{ assert(0); }
|
|
}
|
|
}
|
|
|
|
// if an offset occurred and we are not in trigger mode - then go into release mode
|
|
if( p->trigModeFl==false && p->gateFl == true && gateFl == false )
|
|
{
|
|
switch( p->state )
|
|
{
|
|
case kDlyAdsrId:
|
|
case kAtkAdsrId:
|
|
case kDcyAdsrId:
|
|
case kSusAdsrId:
|
|
if( p->actSusLevel == 0 )
|
|
p->state = kDoneAdsrId;
|
|
else
|
|
{
|
|
// scale the release time to the current level relative to the sustain level
|
|
p->rlsDurSmp = cmMax(1,floor(p->rlsSmp * p->level / p->actSusLevel));
|
|
p->rlsLevel = p->level;
|
|
p->durSmp = 0;
|
|
}
|
|
break;
|
|
|
|
case kRlsAdsrId:
|
|
case kDoneAdsrId:
|
|
// nothing to do
|
|
break;
|
|
|
|
default:
|
|
{ assert(0); }
|
|
}
|
|
|
|
p->state = kRlsAdsrId;
|
|
|
|
}
|
|
|
|
p->gateFl = gateFl;
|
|
|
|
|
|
|
|
switch( p->state )
|
|
{
|
|
case kDlyAdsrId:
|
|
p->level = p->levelMin;
|
|
|
|
if( p->durSmp >= p->dlySmp )
|
|
{
|
|
p->state = kAtkAdsrId;
|
|
p->durSmp = 0;
|
|
|
|
if( p->trigModeFl )
|
|
{
|
|
p->atkBegLevel = p->level;
|
|
p->atkDurSmp = p->atkSmp;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case kAtkAdsrId:
|
|
if( p->atkDurSmp != 0 )
|
|
p->level = p->atkBegLevel + (p->actAtkLevel - p->atkBegLevel) * cmMin(p->durSmp,p->atkDurSmp) / p->atkDurSmp;
|
|
|
|
if( p->durSmp >= p->atkDurSmp || p->atkDurSmp == 0 )
|
|
{
|
|
p->state = kDcyAdsrId;
|
|
p->durSmp = 0;
|
|
}
|
|
break;
|
|
|
|
case kDcyAdsrId:
|
|
if( p->dcySmp != 0 )
|
|
p->level = p->actAtkLevel - ((p->actAtkLevel - p->actSusLevel) * cmMin(p->durSmp,p->dcySmp) / p->dcySmp );
|
|
|
|
if( p->durSmp >= p->dcySmp || p->dcySmp==0 )
|
|
{
|
|
p->state = kSusAdsrId;
|
|
p->durSmp = 0;
|
|
}
|
|
break;
|
|
|
|
case kSusAdsrId:
|
|
p->level = p->actSusLevel;
|
|
|
|
if( p->trigModeFl==true && p->durSmp >= p->susSmp )
|
|
{
|
|
p->state = kRlsAdsrId;
|
|
p->durSmp = 0;
|
|
p->rlsLevel = p->level;
|
|
p->rlsDurSmp = p->rlsSmp;
|
|
}
|
|
break;
|
|
|
|
case kRlsAdsrId:
|
|
if( p->rlsDurSmp != 0 )
|
|
p->level = p->rlsLevel - ((p->rlsLevel - p->levelMin) * cmMin(p->durSmp,p->rlsDurSmp) / p->rlsDurSmp);
|
|
|
|
if( p->durSmp >= p->rlsDurSmp || p->rlsDurSmp==0 )
|
|
{
|
|
p->state = kDoneAdsrId;
|
|
p->durSmp = 0;
|
|
}
|
|
|
|
break;
|
|
|
|
case kDoneAdsrId:
|
|
p->level = p->levelMin;
|
|
break;
|
|
|
|
default:
|
|
{ assert(0); }
|
|
}
|
|
|
|
p->durSmp += floor(procSmpCnt/p->scaleDur);
|
|
|
|
return p->level;
|
|
}
|
|
|
|
void _cmAdsrSetTime( cmAdsr* p, cmReal_t ms, int* smpPtr )
|
|
{
|
|
*smpPtr = cmMax(1,floor(p->srate * ms / 1000.0 ));
|
|
}
|
|
|
|
void cmAdsrSetTime( cmAdsr* p, cmReal_t ms, unsigned id )
|
|
{
|
|
switch( id )
|
|
{
|
|
case kDlyAdsrId:
|
|
_cmAdsrSetTime(p,ms,&p->dlySmp);
|
|
break;
|
|
|
|
case kAtkAdsrId:
|
|
_cmAdsrSetTime(p,ms,&p->atkSmp);
|
|
break;
|
|
|
|
case kDcyAdsrId:
|
|
_cmAdsrSetTime(p,ms,&p->dcySmp);
|
|
break;
|
|
|
|
case kSusAdsrId:
|
|
_cmAdsrSetTime(p,ms,&p->susSmp);
|
|
break;
|
|
|
|
case kRlsAdsrId:
|
|
_cmAdsrSetTime(p,ms,&p->rlsSmp);
|
|
break;
|
|
|
|
default:
|
|
{ assert(0); }
|
|
}
|
|
}
|
|
|
|
void cmAdsrSetLevel( cmAdsr* p, cmReal_t level, unsigned id )
|
|
{
|
|
switch( id )
|
|
{
|
|
case kDlyAdsrId:
|
|
p->levelMin = level;
|
|
break;
|
|
|
|
case kAtkAdsrId:
|
|
p->atkLevel = level;
|
|
p->actAtkLevel = p->atkLevel;
|
|
break;
|
|
|
|
case kSusAdsrId:
|
|
p->susLevel = level;
|
|
p->actSusLevel = p->susLevel;
|
|
break;
|
|
|
|
default:
|
|
{ assert(0); }
|
|
}
|
|
}
|
|
|
|
void cmAdsrReport( cmAdsr* p, cmRpt_t* rpt )
|
|
{
|
|
cmRptPrintf(rpt,"state:%i gate:%i phs:%i d:%i a:%i (%i) d:%i s:%i r:%i (%i) - min:%f atk:%f\n",p->state,p->gateFl,p->durSmp,p->dlySmp,p->atkSmp,p->atkDurSmp,p->dcySmp,p->susSmp,p->rlsSmp,p->rlsDurSmp, p->levelMin, p->atkLevel);
|
|
}
|
|
|
|
//=======================================================================================================================
|
|
|
|
cmCompressor* cmCompressorAlloc( cmCtx* c, cmCompressor* p, cmReal_t srate, unsigned procSmpCnt, cmReal_t inGain, cmReal_t rmsWndMaxMs, cmReal_t rmsWndMs, cmReal_t threshDb, cmReal_t ratio_num, cmReal_t atkMs, cmReal_t rlsMs, cmReal_t outGain, bool bypassFl )
|
|
{
|
|
cmCompressor* op = cmObjAlloc(cmCompressor, c, p );
|
|
|
|
if( srate != 0 )
|
|
if( cmCompressorInit( op, srate, procSmpCnt, inGain, rmsWndMaxMs, rmsWndMs, threshDb, ratio_num, atkMs, rlsMs, outGain, bypassFl ) != cmOkRC )
|
|
cmCompressorFree(&op);
|
|
return op;
|
|
}
|
|
|
|
cmRC_t cmCompressorFree( cmCompressor** pp )
|
|
{
|
|
cmRC_t rc = cmOkRC;
|
|
|
|
if( pp == NULL || *pp == NULL )
|
|
return cmOkRC;
|
|
|
|
cmCompressor* p = *pp;
|
|
|
|
if((rc = cmCompressorFinal(p)) != cmOkRC )
|
|
return rc;
|
|
|
|
cmMemFree(p->rmsWnd);
|
|
cmObjFree(pp);
|
|
|
|
return cmOkRC;
|
|
|
|
}
|
|
|
|
|
|
|
|
cmRC_t cmCompressorInit( cmCompressor* p, cmReal_t srate, unsigned procSmpCnt, cmReal_t inGain, cmReal_t rmsWndMaxMs, cmReal_t rmsWndMs, cmReal_t threshDb, cmReal_t ratio_num, cmReal_t atkMs, cmReal_t rlsMs, cmReal_t outGain, bool bypassFl )
|
|
{
|
|
cmRC_t rc;
|
|
if((rc = cmCompressorFinal(p)) != cmOkRC )
|
|
return rc;
|
|
|
|
p->srate = srate;
|
|
p->procSmpCnt = procSmpCnt;
|
|
p->threshDb = threshDb;
|
|
p->ratio_num = ratio_num;
|
|
|
|
cmCompressorSetAttackMs(p,atkMs);
|
|
cmCompressorSetReleaseMs(p,rlsMs);
|
|
|
|
p->inGain = inGain;
|
|
p->outGain = outGain;
|
|
p->bypassFl = bypassFl;
|
|
|
|
p->rmsWndAllocCnt = cmMax(1,(unsigned)floor(rmsWndMaxMs * srate / (1000.0 * procSmpCnt)));
|
|
p->rmsWnd = cmMemResizeZ(cmSample_t,p->rmsWnd,p->rmsWndAllocCnt);
|
|
cmCompressorSetRmsWndMs(p, rmsWndMs );
|
|
p->rmsWndIdx = 0;
|
|
|
|
p->state = kRlsCompId;
|
|
p->timeConstDb = 10.0;
|
|
p->accumDb = p->threshDb;
|
|
|
|
return rc;
|
|
}
|
|
|
|
cmRC_t cmCompressorFinal( cmCompressor* p )
|
|
{ return cmOkRC; }
|
|
|
|
/*
|
|
The ratio determines to what degree a signal above the threshold is reduced.
|
|
Given a 2:1 ratio, a signal 2dB above the threshold will be reduced to 1db above the threshold.
|
|
Given a 4:1 ratio, a signal 2dB above the threshold will be reduced to 0.25db above the threshold.
|
|
Gain_reduction_db = (thresh - signal) / ratio_numerator (difference between the threshold and signal level after reduction)
|
|
Gain Coeff = 10^(gain_reduction_db / 20);
|
|
|
|
Total_reduction_db = signal - threshold + Gain_reduc_db
|
|
(total change in signal level)
|
|
|
|
The attack can be viewed as beginning at the threshold and moving to the peak
|
|
over some period of time. In linear terms this will go from 1.0 to the max gain
|
|
reductions. In this case we step from thresh to peak at a fixed rate in dB
|
|
based on the attack time.
|
|
|
|
Db: thresh - [thesh:peak] / ratio_num
|
|
Linear: pow(10, (thresh - [thesh:peak] / ratio_num)/20 );
|
|
|
|
During attacks p->accumDb increments toward the p->pkDb.
|
|
During release p->accumDb decrements toward the threshold.
|
|
|
|
(thresh - accumDb) / ratio_num gives the signal level which will be achieved
|
|
if this value is converted to linear form and applied as a gain coeff.
|
|
|
|
See compressor.m
|
|
*/
|
|
|
|
cmRC_t cmCompressorExec( cmCompressor* p, const cmSample_t* x, cmSample_t* y, unsigned n )
|
|
{
|
|
cmSample_t xx[n];
|
|
|
|
cmVOS_MultVVS(xx,n,x,p->inGain); // apply input gain
|
|
|
|
p->rmsWnd[ p->rmsWndIdx ] = cmVOS_RMS(xx, n, n ); // calc and store signal RMS
|
|
p->rmsWndIdx = (p->rmsWndIdx + 1) % p->rmsWndCnt; // advance the RMS storage buffer
|
|
|
|
cmReal_t rmsLin = cmVOS_Sum(p->rmsWnd,p->rmsWndCnt) / p->rmsWndCnt; // calc avg RMS
|
|
cmReal_t rmsDb = cmMax(-100.0,20 * log10(cmMax(0.00001,rmsLin))); // convert avg RMS to dB
|
|
rmsDb += 100.0;
|
|
|
|
// if the compressor is bypassed
|
|
if( p->bypassFl )
|
|
{
|
|
cmVOS_Copy(y,n,x); // copy through - with no input gain
|
|
return cmOkRC;
|
|
}
|
|
|
|
// if the signal is above the threshold
|
|
if( rmsDb <= p->threshDb )
|
|
p->state = kRlsCompId;
|
|
else
|
|
{
|
|
if( rmsDb > p->pkDb )
|
|
p->pkDb = rmsDb;
|
|
|
|
p->state = kAtkCompId;
|
|
}
|
|
|
|
switch( p->state )
|
|
{
|
|
case kAtkCompId:
|
|
p->accumDb = cmMin(p->pkDb, p->accumDb + p->timeConstDb * n / p->atkSmp );
|
|
break;
|
|
|
|
case kRlsCompId:
|
|
p->accumDb = cmMax(p->threshDb, p->accumDb - p->timeConstDb * n / p->rlsSmp );
|
|
break;
|
|
}
|
|
|
|
p->gain = pow(10.0,(p->threshDb - p->accumDb) / (p->ratio_num * 20.0));
|
|
|
|
cmVOS_MultVVS(y,n,xx,p->gain * p->outGain);
|
|
|
|
return cmOkRC;
|
|
}
|
|
|
|
void _cmCompressorSetMs( cmCompressor* p, cmReal_t ms, unsigned* smpPtr )
|
|
{ *smpPtr = cmMax(1,(unsigned)floor(ms * p->srate / 1000.0)); }
|
|
|
|
void cmCompressorSetAttackMs( cmCompressor* p, cmReal_t ms )
|
|
{ _cmCompressorSetMs(p,ms,&p->atkSmp); }
|
|
|
|
void cmCompressorSetReleaseMs( cmCompressor* p, cmReal_t ms )
|
|
{ _cmCompressorSetMs(p,ms,&p->rlsSmp); }
|
|
|
|
void cmCompressorSetThreshDb( cmCompressor* p, cmReal_t threshDb )
|
|
{ p->threshDb = cmMax(0.0,100 + threshDb); }
|
|
|
|
void cmCompressorSetRmsWndMs( cmCompressor* p, cmReal_t ms )
|
|
{
|
|
p->rmsWndCnt = cmMax(1,(unsigned)floor(ms * p->srate / (1000.0 * p->procSmpCnt)));
|
|
|
|
// do not allow rmsWndCnt to exceed rmsWndAllocCnt
|
|
if( p->rmsWndCnt > p->rmsWndAllocCnt )
|
|
p->rmsWndCnt = p->rmsWndAllocCnt;
|
|
}
|
|
|
|
//=======================================================================================================================
|
|
|
|
cmBiQuadEq* cmBiQuadEqAlloc( cmCtx* c, cmBiQuadEq* p, cmReal_t srate, unsigned mode, cmReal_t f0Hz, cmReal_t Q, cmReal_t gainDb, bool bypassFl )
|
|
{
|
|
cmBiQuadEq* op = cmObjAlloc(cmBiQuadEq, c, p );
|
|
|
|
if( srate != 0 )
|
|
if( cmBiQuadEqInit( op, srate, mode, f0Hz, Q, gainDb, bypassFl ) != cmOkRC )
|
|
cmBiQuadEqFree(&op);
|
|
return op;
|
|
}
|
|
|
|
cmRC_t cmBiQuadEqFree( cmBiQuadEq** pp )
|
|
{
|
|
cmRC_t rc = cmOkRC;
|
|
|
|
if( pp == NULL || *pp == NULL )
|
|
return cmOkRC;
|
|
|
|
cmBiQuadEq* p = *pp;
|
|
|
|
if((rc = cmBiQuadEqFinal(p)) != cmOkRC )
|
|
return rc;
|
|
|
|
cmObjFree(pp);
|
|
|
|
return cmOkRC;
|
|
}
|
|
|
|
void _cmBiQuadEqInit( cmBiQuadEq* p )
|
|
{
|
|
cmReal_t w0 = 2*M_PI*p->f0Hz/p->srate;
|
|
cmReal_t cos_w0 = cos(w0);
|
|
cmReal_t alpha = sin(w0)/(2*p->Q);
|
|
|
|
if( p->mode==kLowShelfBqId || p->mode==kHighShelfBqId )
|
|
{
|
|
cmReal_t c = p->mode==kLowShelfBqId ? 1.0 : -1.0;
|
|
cmReal_t A = pow(10.0,p->gainDb/40.0);
|
|
cmReal_t B = 2*sqrt(A)*alpha;
|
|
|
|
p->b[0] = A*( (A+1) - c * (A-1)*cos_w0 + B );
|
|
p->b[1] = c*2*A*( (A-1) - c * (A+1)*cos_w0);
|
|
p->b[2] = A*( (A+1) - c * (A-1)*cos_w0 - B );
|
|
p->a[0] = (A+1) + c * (A-1)*cos_w0 + B;
|
|
p->a[1] = -c*2*( (A-1) + c * (A+1)*cos_w0);
|
|
p->a[2] = (A+1) + c * (A-1)*cos_w0 - B;
|
|
}
|
|
else
|
|
{
|
|
if( p->mode != kPeakBqId )
|
|
{
|
|
p->a[0] = 1 + alpha;
|
|
p->a[1] = -2*cos_w0;
|
|
p->a[2] = 1 - alpha;
|
|
}
|
|
|
|
switch(p->mode)
|
|
{
|
|
case kLpfBqId:
|
|
case kHpFBqId:
|
|
{
|
|
cmReal_t c = p->mode==kLpfBqId ? 1.0 : -1.0;
|
|
p->b[0] = (1 - c * cos_w0)/2;
|
|
p->b[1] = c * (1 - c * cos_w0);
|
|
p->b[2] = (1 - c * cos_w0)/2;
|
|
}
|
|
break;
|
|
|
|
case kBpfBqId:
|
|
p->b[0] = p->Q*alpha;
|
|
p->b[1] = 0;
|
|
p->b[2] = -p->Q*alpha;
|
|
break;
|
|
|
|
case kNotchBqId:
|
|
p->b[0] = 1;
|
|
p->b[1] = -2*cos_w0;
|
|
p->b[2] = 1;
|
|
break;
|
|
|
|
case kAllpassBqId:
|
|
p->b[0] = 1 - alpha;
|
|
p->b[1] = -2*cos_w0;
|
|
p->b[2] = 1 + alpha;
|
|
break;
|
|
|
|
case kPeakBqId:
|
|
{
|
|
cmReal_t A = pow(10.0,p->gainDb/40.0);
|
|
p->b[0] = 1 + alpha*A;
|
|
p->b[1] = -2*cos_w0;
|
|
p->b[2] = 1 - alpha*A;
|
|
p->a[0] = 1 + alpha/A;
|
|
p->a[1] = -2*cos_w0;
|
|
p->a[2] = 1 - alpha/A;
|
|
}
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
cmReal_t a0 = p->a[0];
|
|
unsigned i=0;
|
|
for(; i<3; ++i)
|
|
{
|
|
p->b[i]/=a0;
|
|
p->a[i]/=a0;
|
|
}
|
|
|
|
if(0)
|
|
{
|
|
printf("sr:%f mode:%i f0:%f q:%f gain:%f\n", p->srate,p->mode,p->f0Hz,p->Q,p->gainDb);
|
|
|
|
for(i=0; i<3; ++i)
|
|
printf("a[%i]=%f b[%i]=%f ",i,p->a[i],i,p->b[i]);
|
|
printf("\n");
|
|
}
|
|
|
|
}
|
|
|
|
cmRC_t cmBiQuadEqInit( cmBiQuadEq* p, cmReal_t srate, unsigned mode, cmReal_t f0Hz, cmReal_t Q, cmReal_t gainDb, bool bypassFl )
|
|
{
|
|
cmRC_t rc;
|
|
if((rc = cmBiQuadEqFinal(p)) != cmOkRC )
|
|
return rc;
|
|
|
|
memset(p->d,0,sizeof(p->d));
|
|
|
|
p->srate = srate;
|
|
cmBiQuadEqSet(p, mode, f0Hz, Q, gainDb );
|
|
|
|
_cmBiQuadEqInit(p);
|
|
|
|
return rc;
|
|
}
|
|
|
|
cmRC_t cmBiQuadEqFinal( cmBiQuadEq* p )
|
|
{ return cmOkRC;}
|
|
|
|
cmRC_t cmBiQuadEqExec( cmBiQuadEq* p, const cmSample_t* x, cmSample_t* y, unsigned n )
|
|
{
|
|
if( y == NULL )
|
|
return cmOkRC;
|
|
|
|
if( x == NULL )
|
|
{
|
|
cmVOS_Zero(y,n);
|
|
return cmOkRC;
|
|
}
|
|
|
|
if( p->bypassFl )
|
|
{
|
|
cmVOS_Copy(y,n,x);
|
|
return cmOkRC;
|
|
}
|
|
|
|
// Direct Form I implementation
|
|
unsigned i=0;
|
|
for(; i<n; ++i)
|
|
{
|
|
y[i] = p->b[0]*x[i] + p->b[1]*p->d[0] + p->b[2]*p->d[1] - p->a[1]*p->d[2] - p->a[2]*p->d[3];
|
|
p->d[1] = p->d[0];
|
|
p->d[0] = x[i];
|
|
p->d[3] = p->d[2];
|
|
p->d[2] = y[i];
|
|
}
|
|
|
|
return cmOkRC;
|
|
}
|
|
|
|
|
|
void cmBiQuadEqSet( cmBiQuadEq* p, unsigned mode, cmReal_t f0Hz, cmReal_t Q, cmReal_t gainDb )
|
|
{
|
|
p->mode = mode;
|
|
p->f0Hz = f0Hz;
|
|
p->Q = Q;
|
|
p->gainDb= gainDb;
|
|
_cmBiQuadEqInit(p);
|
|
}
|
|
|
|
//=======================================================================================================================
|
|
|
|
cmDistDs* cmDistDsAlloc( cmCtx* c, cmDistDs* p, cmReal_t srate, cmReal_t inGain, cmReal_t downSrate, cmReal_t bits, bool rectFl, bool fullFl, cmReal_t clipDb, cmReal_t outGain, bool bypassFl )
|
|
{
|
|
cmDistDs* op = cmObjAlloc(cmDistDs, c, p );
|
|
|
|
if( srate != 0 )
|
|
if( cmDistDsInit( op, srate, inGain, downSrate, bits, rectFl, fullFl, clipDb, outGain, bypassFl ) != cmOkRC )
|
|
cmDistDsFree(&op);
|
|
return op;
|
|
|
|
}
|
|
|
|
cmRC_t cmDistDsFree( cmDistDs** pp )
|
|
{
|
|
cmRC_t rc = cmOkRC;
|
|
|
|
if( pp == NULL || *pp == NULL )
|
|
return cmOkRC;
|
|
|
|
cmDistDs* p = *pp;
|
|
|
|
if((rc = cmDistDsFinal(p)) != cmOkRC )
|
|
return rc;
|
|
|
|
cmObjFree(pp);
|
|
|
|
return cmOkRC;
|
|
}
|
|
|
|
cmRC_t cmDistDsInit( cmDistDs* p, cmReal_t srate, cmReal_t inGain, cmReal_t downSrate, cmReal_t bits, bool rectFl, bool fullFl, cmReal_t clipDb, cmReal_t outGain, bool bypassFl )
|
|
{
|
|
cmRC_t rc;
|
|
if((rc = cmDistDsFinal(p)) != cmOkRC )
|
|
return rc;
|
|
|
|
p->srate = srate;
|
|
p->downSrate = downSrate;
|
|
p->bits = bits;
|
|
p->rectFl = rectFl;
|
|
p->fullFl = fullFl;
|
|
p->clipDb = clipDb;
|
|
p->inGain = inGain;
|
|
p->outGain = outGain;
|
|
p->bypassFl = bypassFl;
|
|
p->fracIdx = 0;
|
|
p->lastVal = 0;
|
|
p->lastY = 0;
|
|
p->lastX = 0;
|
|
return rc;
|
|
}
|
|
|
|
cmRC_t cmDistDsFinal( cmDistDs* p )
|
|
{ return cmOkRC; }
|
|
|
|
void _cmDistDsExpr0( cmDistDs* p, const cmSample_t* x, cmSample_t* y, unsigned n )
|
|
{
|
|
unsigned i= 0;
|
|
for(i=0; i<n; ++i)
|
|
{
|
|
p->lastY = fmod(p->lastY + fabs(x[i] - p->lastX),2.0);
|
|
y[i] = cmVOS_RMS(x,n,n) * x[i] * (p->lastY - 1.0);
|
|
p->lastX = x[i];
|
|
}
|
|
}
|
|
|
|
void _cmDistDsExpr1( cmDistDs* p, cmSample_t* x, cmSample_t* y, unsigned n )
|
|
{
|
|
unsigned i= 0;
|
|
for(i=0; i<n; ++i)
|
|
{
|
|
p->lastY = fmod(p->lastY + fabs(x[i] - p->lastX),2.0*M_PI);
|
|
y[i] = x[i] * sin(p->lastY);
|
|
p->lastX = x[i];
|
|
}
|
|
}
|
|
|
|
|
|
|
|
cmRC_t cmDistDsExec( cmDistDs* p, const cmSample_t* x, cmSample_t* y, unsigned n )
|
|
{
|
|
if( x == NULL )
|
|
{
|
|
if( y != NULL )
|
|
cmVOS_Zero(y,n);
|
|
return cmOkRC;
|
|
}
|
|
|
|
if( p->bypassFl )
|
|
{
|
|
cmVOS_Copy(y,n,x);
|
|
return cmOkRC;
|
|
}
|
|
|
|
|
|
unsigned maxVal = cmMax(2,(unsigned)round(pow(2.0,p->bits)));
|
|
double incr = 1.0; // p->downSrate / p->srate;
|
|
unsigned i;
|
|
enum { kNoRectId, kFullRectId, kHalfRectId };
|
|
unsigned rectCode = kNoRectId;
|
|
|
|
//cmSample_t t[n];
|
|
//_cmDistDsExpr0(p,x,t,n);
|
|
//x = t;
|
|
|
|
if( p->rectFl )
|
|
{
|
|
|
|
if( p->fullFl )
|
|
rectCode = kFullRectId;
|
|
else
|
|
rectCode = kHalfRectId;
|
|
}
|
|
|
|
double clipLevel = p->clipDb < -100.0 ? 0.0 : pow(10.0,p->clipDb/20.0);
|
|
|
|
for(i=0; i<n; ++i)
|
|
{
|
|
double ii = floor(p->fracIdx);
|
|
|
|
p->fracIdx += incr;
|
|
|
|
// if it is time to sample again
|
|
if( floor(p->fracIdx) != ii )
|
|
{
|
|
cmSample_t v = p->inGain * floor(x[i] * maxVal) / maxVal;
|
|
|
|
switch( rectCode )
|
|
{
|
|
case kFullRectId:
|
|
v = (cmSample_t)fabs(v);
|
|
break;
|
|
|
|
case kHalfRectId:
|
|
if( v < 0.0 )
|
|
v = 0.0;
|
|
break;
|
|
}
|
|
|
|
if( fabs(v) > clipLevel )
|
|
v = v<0.0 ? -clipLevel : clipLevel;
|
|
|
|
p->lastVal = v * p->outGain;
|
|
}
|
|
|
|
y[i] = p->lastVal;
|
|
}
|
|
|
|
return cmOkRC;
|
|
}
|