mirror of
https://github.com/cookiengineer/audacity
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57 lines
1.3 KiB
C++
57 lines
1.3 KiB
C++
/***************************************************/
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/*! \class Generator
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\brief STK abstract unit generator parent class.
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This class provides common functionality for
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STK unit generator sample-source subclasses.
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by Perry R. Cook and Gary P. Scavone, 1995 - 2005.
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*/
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/***************************************************/
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#include "Generator.h"
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using namespace Nyq;
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Generator :: Generator() : Stk()
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{
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lastOutput_ = 0.0;
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}
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Generator :: ~Generator()
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{
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}
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StkFloat Generator :: tick( void )
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{
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return computeSample();
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}
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StkFrames& Generator :: tick( StkFrames& frames, unsigned int channel )
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{
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if ( channel >= frames.channels() ) {
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errorString_ << "Generator::tick(): channel and StkFrames arguments are incompatible!";
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handleError( StkError::FUNCTION_ARGUMENT );
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}
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if ( frames.channels() == 1 ) {
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for ( unsigned int i=0; i<frames.frames(); i++ )
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frames[i] = computeSample();
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}
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else if ( frames.interleaved() ) {
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unsigned int hop = frames.channels();
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unsigned int index = channel;
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for ( unsigned int i=0; i<frames.frames(); i++ ) {
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frames[index] = computeSample();
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index += hop;
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}
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}
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else {
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unsigned int iStart = channel * frames.frames();
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for ( unsigned int i=0; i<frames.frames(); i++, iStart++ )
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frames[iStart] = computeSample();
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}
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return frames;
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}
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