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Version 4.4.0

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This commit is contained in:
Gary Scavone
2013-09-29 23:11:39 +02:00
committed by Stephen Sinclair
parent d199342e86
commit eccd8c9981
287 changed files with 11712 additions and 7676 deletions
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69
include/Noise.h
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@@ -1,3 +1,10 @@
#ifndef STK_NOISE_H
#define STK_NOISE_H
#include "Generator.h"
namespace stk {
/***************************************************/
/*! \class Noise
\brief STK noise generator.
@@ -6,31 +13,20 @@
C rand() function. The quality of the rand()
function varies from one OS to another.
by Perry R. Cook and Gary P. Scavone, 1995 - 2007.
by Perry R. Cook and Gary P. Scavone, 1995 - 2009.
*/
/***************************************************/
#ifndef STK_NOISE_H
#define STK_NOISE_H
#include "Generator.h"
class Noise : public Generator
{
public:
//! Default constructor which seeds the random number generator with the system time.
Noise();
//! Constructor which seeds the random number generator with a given seed.
//! Default constructor that can also take a specific seed value.
/*!
If the seed value is zero, the random number generator is
If the seed value is zero (the default value), the random number generator is
seeded with the system time.
*/
Noise( unsigned int seed );
//! Class destructor.
virtual ~Noise();
Noise( unsigned int seed = 0 );
//! Seed the random number generator with a specific seed value.
/*!
@@ -39,10 +35,49 @@ public:
*/
void setSeed( unsigned int seed = 0 );
protected:
//! Return the last computed output value.
StkFloat lastOut( void ) const { return lastFrame_[0]; };
virtual StkFloat computeSample( void );
//! Compute and return one output sample.
StkFloat tick( void );
//! Fill a channel of the StkFrames object with computed outputs.
/*!
The \c channel argument must be less than the number of
channels in the StkFrames argument (the first channel is specified
by 0). However, range checking is only performed if _STK_DEBUG_
is defined during compilation, in which case an out-of-range value
will trigger an StkError exception.
*/
StkFrames& tick( StkFrames& frames, unsigned int channel = 0 );
protected:
};
inline StkFloat Noise :: tick( void )
{
return lastFrame_[0] = (StkFloat) ( 2.0 * rand() / (RAND_MAX + 1.0) - 1.0 );
}
inline StkFrames& Noise :: tick( StkFrames& frames, unsigned int channel )
{
#if defined(_STK_DEBUG_)
if ( channel >= frames.channels() ) {
errorString_ << "Noise::tick(): channel and StkFrames arguments are incompatible!";
handleError( StkError::FUNCTION_ARGUMENT );
}
#endif
StkFloat *samples = &frames[channel];
unsigned int hop = frames.channels();
for ( unsigned int i=0; i<frames.frames(); i++, samples += hop )
*samples = (StkFloat) ( 2.0 * rand() / (RAND_MAX + 1.0) - 1.0 );
lastFrame_[0] = *(samples-hop);
return frames;
}
} // stk namespace
#endif