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senkov |
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/*************************************************************************** |
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* * |
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* Copyright (C) 2005 Christian Schoenebeck * |
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* * |
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* This library is free software; you can redistribute it and/or modify * |
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* it under the terms of the GNU General Public License as published by * |
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* the Free Software Foundation; either version 2 of the License, or * |
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* (at your option) any later version. * |
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* * |
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* This library is distributed in the hope that it will be useful, * |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of * |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
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* GNU General Public License for more details. * |
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* * |
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* You should have received a copy of the GNU General Public License * |
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* along with this library; if not, write to the Free Software * |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, * |
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* MA 02111-1307 USA * |
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***************************************************************************/ |
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#ifndef __LS_LFOTRIANGLEINTABSMATH_H__ |
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#define __LS_LFOTRIANGLEINTABSMATH_H__ |
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#include <stdlib.h> |
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#include "LFOTriangleIntMath.h" |
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namespace LinuxSampler { |
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/** @brief Triangle LFO (int math implementation) |
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* |
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* This is a triangle Low Frequency Oscillator which uses pure integer |
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* math (without branches) to synthesize the triangular wave. |
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*/ |
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schoenebeck |
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template<LFO::range_type_t RANGE> |
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senkov |
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class LFOTriangleIntAbsMath : public LFOTriangleIntMath<RANGE> { |
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public: |
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/** |
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* Constructor |
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* |
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* @param Max - maximum value of the output levels |
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*/ |
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LFOTriangleIntAbsMath(float Max) : LFOTriangleIntMath<RANGE>::LFOTriangleIntMath(Max) { |
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schoenebeck |
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//NOTE: DO NOT add any custom initialization here, since it would break LFOCluster construction ! |
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senkov |
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} |
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/** |
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* Calculates exactly one sample point of the LFO wave. |
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* |
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* @returns next LFO level |
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*/ |
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inline float render() { |
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this->iLevel += this->c; |
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schoenebeck |
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if (RANGE == LFO::range_unsigned) |
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senkov |
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return this->normalizer * (float) (abs(this->iLevel)); |
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else /* signed range */ |
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return this->normalizer * (float) (abs(this->iLevel)) + this->offset; |
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} |
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}; |
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} // namespace LinuxSampler |
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#endif // __LS_LFOTRIANGLEINTABSMATH_H__ |