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author | David Wagner <david.wagner@intel.com> | 2015-02-18 15:15:04 +0100 |
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committer | David Wagner <david.wagner@intel.com> | 2015-02-18 15:15:04 +0100 |
commit | 8a4661428263e1f1a082b635a4e860818fb2fb52 (patch) | |
tree | 7a9d640b291f90723af9b463878dc5ed951bd4f2 /parameter/LogarithmicParameterAdaptation.h | |
parent | d37ca914061debbd6135840834f2cae2ffbeb07e (diff) | |
parent | 36423a49fdde5755faea5914e554b64363034b0c (diff) | |
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Merge pull request #49 from pafonso/iminleg_rebase
Iminleg rebase
Diffstat (limited to 'parameter/LogarithmicParameterAdaptation.h')
-rw-r--r-- | parameter/LogarithmicParameterAdaptation.h | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/parameter/LogarithmicParameterAdaptation.h b/parameter/LogarithmicParameterAdaptation.h new file mode 100644 index 0000000..3b7fd4d --- /dev/null +++ b/parameter/LogarithmicParameterAdaptation.h @@ -0,0 +1,71 @@ +/* + * Copyright (c) 2011-2015, Intel Corporation + * 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 the copyright holder 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 THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT HOLDER OR 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 + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#pragma once + +#include "LinearParameterAdaptation.h" + +/** + * This class is used to perform a logarithmic adapation of type: + * (slopeNumerator / slopeDenominator) * log(parameter) + offset + * Since log(x) == -INFINITY , we can define FloorValue as a + * x -> 0 + * a lower bound limit for the adaptation + */ +class CLogarithmicParameterAdaptation : public CLinearParameterAdaptation +{ +public: + CLogarithmicParameterAdaptation(); + + /** + * Conversions must satisfy the following: f(f'(a)) = a + * Let f=fromUserValue and f'=toUserValue + * if y = f(log(x)/log(base)), then + * f'(y) * log(base) = log (x) + * exp(f'(y)*log(base)) = x + */ + virtual int64_t fromUserValue(double dValue) const; + virtual double toUserValue(int64_t iValue) const; + + virtual void showProperties(std::string& strResult) const; + + virtual bool fromXml(const CXmlElement& xmlElement, CXmlSerializingContext& serializingContext); +private: + /** + * _dLogarithmBase characterizes the new logarithm logB(x) with + * the following property: logB(x) = log(x) / log(_dLogarithmBase). + * log being the base-e logarithm. + */ + double _dLogarithmBase; + /** + * _dFloorValue reflects the lower bound for volume attenuation + */ + double _dFloorValue; +}; |