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73 lines
3.0 KiB
73 lines
3.0 KiB
/* |
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This program 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 3 of the License, or |
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(at your option) any later version. |
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This program 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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You should have received a copy of the GNU General Public License |
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along with this program. If not, see <http://www.gnu.org/licenses/>. |
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*/ |
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// |
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/// @file ModeFilter.h |
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/// @brief A class to apply a mode filter which is basically picking the median value from the last x samples |
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/// the filter size (i.e buffer size) should always be an odd number |
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#pragma once |
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#include <inttypes.h> |
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#include "FilterClass.h" |
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#include "FilterWithBuffer.h" |
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template <class T, uint8_t FILTER_SIZE> |
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class ModeFilter : public FilterWithBuffer<T,FILTER_SIZE> |
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{ |
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public: |
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ModeFilter(uint8_t return_element); |
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// apply - Add a new raw value to the filter, retrieve the filtered result |
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virtual T apply(T sample) override; |
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// get - get latest filtered value from filter (equal to the value returned by latest call to apply method) |
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virtual T get() const { |
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return _output; |
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} |
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private: |
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// private methods |
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uint8_t _return_element; |
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T _output; |
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void isort(T sample, bool drop_high_sample); |
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bool drop_high_sample; // switch to determine whether to drop the highest or lowest sample when new value arrives |
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}; |
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// Typedef for convenience |
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typedef ModeFilter<int8_t,3> ModeFilterInt8_Size3; |
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typedef ModeFilter<int8_t,4> ModeFilterInt8_Size4; |
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typedef ModeFilter<int8_t,5> ModeFilterInt8_Size5; |
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typedef ModeFilter<int8_t,6> ModeFilterInt8_Size6; |
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typedef ModeFilter<int8_t,7> ModeFilterInt8_Size7; |
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typedef ModeFilter<uint8_t,3> ModeFilterUInt8_Size3; |
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typedef ModeFilter<uint8_t,4> ModeFilterUInt8_Size4; |
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typedef ModeFilter<uint8_t,5> ModeFilterUInt8_Size5; |
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typedef ModeFilter<uint8_t,6> ModeFilterUInt8_Size6; |
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typedef ModeFilter<uint8_t,7> ModeFilterUInt8_Size7; |
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typedef ModeFilter<int16_t,3> ModeFilterInt16_Size3; |
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typedef ModeFilter<int16_t,4> ModeFilterInt16_Size4; |
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typedef ModeFilter<int16_t,5> ModeFilterInt16_Size5; |
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typedef ModeFilter<int16_t,6> ModeFilterInt16_Size6; |
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typedef ModeFilter<int16_t,7> ModeFilterInt16_Size7; |
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typedef ModeFilter<uint16_t,3> ModeFilterUInt16_Size3; |
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typedef ModeFilter<uint16_t,4> ModeFilterUInt16_Size4; |
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typedef ModeFilter<uint16_t,5> ModeFilterUInt16_Size5; |
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typedef ModeFilter<uint16_t,6> ModeFilterUInt16_Size6; |
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typedef ModeFilter<uint16_t,7> ModeFilterUInt16_Size7; |
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typedef ModeFilter<float,3> ModeFilterFloat_Size3; |
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typedef ModeFilter<float,4> ModeFilterFloat_Size4; |
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typedef ModeFilter<float,5> ModeFilterFloat_Size5; |
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typedef ModeFilter<float,6> ModeFilterFloat_Size6; |
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typedef ModeFilter<float,7> ModeFilterFloat_Size7;
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