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/*
* Copyright 2009,2010,2011 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/>.
*
*/
#ifndef _DSP_ENVELOPE_H_
#define _DSP_ENVELOPE_H_
#include "DspObject.h"
/** [env~], [env~ float], [env~ float float] */
class DspEnvelope : public DspObject {
public:
static MessageObject *newObject(PdMessage *initMessage, PdGraph *graph);
/*
* @param windowSize The window size in samples of the analysis. Defaults to 1024.
* @param windowInterval The window interval in samples of the analysis.
* The interval must be a multiple of the block size. If not, then it is reset to
* the nearest multiple. Defaults to windowSize/2, according to the mentioned constraints.
*/
DspEnvelope(PdMessage *initMessage, PdGraph *graph);
~DspEnvelope();
static const char *getObjectLabel();
std::string toString();
ConnectionType getConnectionType(int outletIndex) { return MESSAGE; }
private:
static void processSignal(DspObject *dspObject, int fromIndex, int toIndex);
/** Initialise the analysis buffers. */
void initBuffers();
void setWindowInterval(int newInterval);
int windowSize;
int windowInterval;
int numSamplesReceived;
int numSamplesReceivedSinceLastInterval;
float *signalBuffer;
float *hanningCoefficients;
};
inline const char *DspEnvelope::getObjectLabel() {
return "env~";
}
#endif // _DSP_ENVELOPE_H_
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