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/*
* Copyright 2009,2010,2012 Reality Jockey, Ltd.
* info@rjdj.me
* http://rjdj.me/
*
* This file is part of ZenGarden.
*
* ZenGarden is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* ZenGarden is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with ZenGarden. If not, see <http://www.gnu.org/licenses/>.
*
*/
#include "DspNoise.h"
#include "MersenneTwister.h"
MessageObject *DspNoise::newObject(PdMessage *initMessage, PdGraph *graph) {
return new DspNoise(graph);
}
DspNoise::DspNoise(PdGraph *graph) : DspObject(1, 0, 0, 1, graph) {
twister = new MTRand(); // use new seed
processFunction = &processSignal;
}
DspNoise::~DspNoise() {
delete twister;
}
void DspNoise::processSignal(DspObject *dspObject, int fromIndex, int toIndex) {
DspNoise *d = reinterpret_cast<DspNoise *>(dspObject);
for (int i = 0; i < toIndex; i++) {
d->dspBufferAtOutlet[0][i] = ((float) d->twister->rand(2.0)) - 1.0f;
}
}
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