/*
* Copyright ( C ) 2011 Google Inc . All rights reserved .
*
* Redistribution and use in source and binary forms , with or without
* modification , are permitted provided that the following conditions
* are met :
*
* 1 . Redistributions of source code must retain the above copyright
* notice , this list of conditions and the following disclaimer .
* 2 . Redistributions in binary form must reproduce the above copyright
* notice , this list of conditions and the following disclaimer in the
* documentation and / or other materials provided with the distribution .
* 3 . Neither the name of Apple Computer , Inc . ( " Apple " ) nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission .
*
* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS " AS IS " AND ANY
* EXPRESS OR IMPLIED WARRANTIES , INCLUDING , BUT NOT LIMITED TO , THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED . IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT , INDIRECT , INCIDENTAL , SPECIAL , EXEMPLARY , OR CONSEQUENTIAL DAMAGES
* ( INCLUDING , BUT NOT LIMITED TO , PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES ;
* LOSS OF USE , DATA , OR PROFITS ; OR BUSINESS INTERRUPTION ) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY , WHETHER IN CONTRACT , STRICT LIABILITY , OR TORT
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* THIS SOFTWARE , EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE .
*/
#ifndef ZeroPole_h
#define ZeroPole_h
namespace WebCore {
// ZeroPole is a simple filter with one zero and one pole.
class ZeroPole {
public :
ZeroPole() : m_zero(0 ), m_pole(0 ), m_lastX(0 ), m_lastY(0 ) {}
void process(const float * source, float * destination, int framesToProcess);
// Reset filter state.
void reset() {
m_lastX = 0 ;
m_lastY = 0 ;
}
void setZero(float zero) { m_zero = zero; }
void setPole(float pole) { m_pole = pole; }
float zero() const { return m_zero; }
float pole() const { return m_pole; }
private :
float m_zero;
float m_pole;
float m_lastX;
float m_lastY;
};
} // namespace WebCore
#endif // ZeroPole_h
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(vorverarbeitet am 2026-06-10)
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