86 lines
2.1 KiB
C++
86 lines
2.1 KiB
C++
/*
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SuperCollider real time audio synthesis system
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Copyright (c) 2002 James McCartney. All rights reserved.
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http://www.audiosynth.com
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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//ACMC demo UGen
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#include "SC_PlugIn.h"
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static InterfaceTable *ft;
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struct AverageOutput : public Unit {
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float average, prev_trig;
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uint32 count;
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};
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extern "C" {
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void AverageOutput_next(AverageOutput *unit, int inNumSamples);
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void AverageOutput_Ctor(AverageOutput* unit);
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void AverageOutput_Dtor(AverageOutput* unit);
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}
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void AverageOutput_Ctor( AverageOutput* unit ) {
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unit->average = 0.;
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unit->count = 0;
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unit->prev_trig = 0.;
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RGen& rgen = *unit->mParent->mRGen;
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SETCALC(AverageOutput_next);
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}
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void AverageOutput_Dtor(AverageOutput *unit) {
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// nothing to do here
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}
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void AverageOutput_next( AverageOutput *unit, int inNumSamples ) {
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int i;
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float *in = IN(0);
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float *out = ZOUT(0);
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float trig = ZIN0(1);
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float prev_trig = unit->prev_trig;
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double average = unit->average;
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uint32 count = unit->count;
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if(prev_trig <= 0. && trig > 0.) {
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average = 0.;
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count = 0;
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}
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for (i=0; i<inNumSamples; ++i) {
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average = ((count * average) + *(in+i)) / ++count;
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ZXP(out) = average;
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}
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unit->prev_trig = trig;
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unit->count = count;
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unit->average = average;
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}
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extern "C" void load(InterfaceTable *inTable) {
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ft = inTable;
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DefineDtorUnit(AverageOutput);
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}
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