1 | // %flair:license{
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2 | // This file is part of the Flair framework distributed under the
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3 | // CECILL-C License, Version 1.0.
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4 | // %flair:license}
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5 | /*!
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6 | * \file ButterworthLowPass.h
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7 | * \brief Class defining a Butterworth low pass filter
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8 | * \author Guillaume Sanahuja, Copyright Heudiasyc UMR UTC/CNRS 7253
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9 | * \date 2013/12/10
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10 | * \version 4.0
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11 | */
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12 |
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13 | #ifndef BUTTERWORTHLOWPASS_H
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14 | #define BUTTERWORTHLOWPASS_H
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15 |
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16 | #include <IODevice.h>
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17 |
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18 | namespace flair {
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19 | namespace core {
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20 | class cvmatrix;
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21 | }
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22 | namespace gui {
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23 | class LayoutPosition;
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24 | }
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25 | }
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26 |
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27 | class ButterworthLowPass_impl;
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28 |
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29 | namespace flair {
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30 | namespace filter {
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31 | /*! \class ButterworthLowPass
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32 | *
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33 | * \brief Class defining a Butterworth low pass filter
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34 | */
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35 | class ButterworthLowPass : public core::IODevice {
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36 | public:
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37 | /*!
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38 | * \brief Constructor
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39 | *
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40 | * Construct a ButterworthLowPass at position. \n
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41 | * After calling this function, position will be deleted as it is no longer
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42 | *usefull. \n
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43 | * The filter is automatically updated when parent's
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44 | * IODevice::ProcessUpdate is called.
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45 | *
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46 | * \param parent parent
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47 | * \param position position to display settings
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48 | * \param name name
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49 | * \param order order of the filter
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50 | */
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51 | ButterworthLowPass(const IODevice *parent,
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52 | const gui::LayoutPosition *position, std::string name,
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53 | int order);
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54 |
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55 | /*!
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56 | * \brief Constructor
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57 | *
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58 | * Construct a ButterworthLowPass at position. \n
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59 | * The ButterworthLowPass will automatically be child of position->getLayout()
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60 | *Layout. After calling this function,
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61 | * position will be deleted as it is no longer usefull. \n
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62 | * The filter is updated manually with UpdateFrom method. \n
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63 | *
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64 | * \param position position to display settings
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65 | * \param name name
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66 | * \param order order of the filter
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67 | */
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68 | ButterworthLowPass(const gui::LayoutPosition *position, std::string name,
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69 | int order);
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70 |
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71 | /*!
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72 | * \brief Destructor
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73 | *
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74 | */
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75 | ~ButterworthLowPass();
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76 |
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77 | /*!
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78 | * \brief Output value
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79 | *
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80 | * \return filtered output
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81 | */
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82 | float Output(void) const;
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83 |
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84 | /*!
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85 | * \brief Output matrix
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86 | *
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87 | * \return filtered output
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88 | */
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89 | core::cvmatrix *Matrix(void) const;
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90 |
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91 | /*!
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92 | * \brief Update using provided datas
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93 | *
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94 | * Reimplemented from IODevice.
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95 | *
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96 | * \param data data from the parent to process
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97 | */
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98 | void UpdateFrom(const core::io_data *data);
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99 |
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100 | private:
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101 | class ButterworthLowPass_impl *pimpl_;
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102 | };
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103 | } // end namespace filter
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104 | } // end namespace flair
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105 | #endif // BUTTERWORTHLOWPASS_H
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