[324] | 1 | // %flair:license{
|
---|
| 2 | // This file is part of the Flair framework distributed under the
|
---|
| 3 | // CECILL-C License, Version 1.0.
|
---|
| 4 | // %flair:license}
|
---|
| 5 | // created: 2011/05/01
|
---|
| 6 | // filename: LowPassFilter_impl.cpp
|
---|
| 7 | //
|
---|
| 8 | // author: Guillaume Sanahuja
|
---|
| 9 | // Copyright Heudiasyc UMR UTC/CNRS 7253
|
---|
| 10 | //
|
---|
| 11 | // version: $Id: $
|
---|
| 12 | //
|
---|
| 13 | // purpose: objet permettant le calcul d'un filtre passe bas
|
---|
| 14 | //
|
---|
| 15 | //
|
---|
| 16 | /*********************************************************************/
|
---|
| 17 |
|
---|
| 18 | #include "LowPassFilter_impl.h"
|
---|
| 19 | #include "LowPassFilter.h"
|
---|
| 20 | #include <Matrix.h>
|
---|
| 21 | #include <Layout.h>
|
---|
| 22 | #include <GroupBox.h>
|
---|
| 23 | #include <SpinBox.h>
|
---|
| 24 | #include <DoubleSpinBox.h>
|
---|
| 25 | #include <typeinfo>
|
---|
| 26 | #define PI ((float)3.14159265358979323846)
|
---|
| 27 |
|
---|
| 28 | using std::string;
|
---|
| 29 | using namespace flair::core;
|
---|
| 30 | using namespace flair::gui;
|
---|
| 31 | using namespace flair::filter;
|
---|
| 32 |
|
---|
| 33 | LowPassFilter_impl::LowPassFilter_impl(const LowPassFilter *self,
|
---|
| 34 | const LayoutPosition *position,
|
---|
| 35 | string name,
|
---|
| 36 | const Matrix *init_value) {
|
---|
| 37 |
|
---|
| 38 | if (init_value != NULL) {
|
---|
| 39 | // init output matrix of same size as init
|
---|
| 40 | MatrixDescriptor *desc =new MatrixDescriptor(init_value->Rows(), init_value->Cols());
|
---|
| 41 |
|
---|
| 42 | for (int i = 0; i < init_value->Rows(); i++) {
|
---|
| 43 | for (int j = 0; j < init_value->Cols(); j++) {
|
---|
| 44 | desc->SetElementName(i, j, init_value->Name(i, j));
|
---|
| 45 | }
|
---|
| 46 | }
|
---|
| 47 | output = new Matrix(self, desc,init_value->GetDataType().GetElementDataType(), name);
|
---|
| 48 | for (int i = 0; i < init_value->Rows(); i++) {
|
---|
| 49 | for (int j = 0; j < init_value->Cols(); j++) {
|
---|
| 50 | output->SetValue(i, j, init_value->Value(i,j));
|
---|
| 51 | }
|
---|
| 52 | }
|
---|
| 53 | delete desc;
|
---|
| 54 | } else {
|
---|
| 55 | // if NULL, assume dimension 1, and init=0
|
---|
| 56 | MatrixDescriptor *desc = new MatrixDescriptor(1, 1);
|
---|
| 57 | desc->SetElementName(0, 0, "output");
|
---|
| 58 | output = new Matrix(self, desc, floatType, name);
|
---|
| 59 | delete desc;
|
---|
| 60 | }
|
---|
| 61 |
|
---|
| 62 | // init UI
|
---|
| 63 | GroupBox *reglages_groupbox = new GroupBox(position, name);
|
---|
| 64 | T = new DoubleSpinBox(reglages_groupbox->NewRow(), "period, 0 for auto", " s",
|
---|
| 65 | 0, 10, 0.01);
|
---|
| 66 | freq = new DoubleSpinBox(reglages_groupbox->NewRow(), "cutoff frequency",
|
---|
| 67 | " Hz", 0, 10000, 0.1, 2, 1);
|
---|
| 68 |
|
---|
| 69 | this->self = self;
|
---|
| 70 | }
|
---|
| 71 |
|
---|
| 72 | LowPassFilter_impl::~LowPassFilter_impl() {}
|
---|
| 73 |
|
---|
| 74 | void LowPassFilter_impl::UpdateFrom(const io_data *data) {
|
---|
| 75 | float delta_t;
|
---|
| 76 | const Matrix* input = dynamic_cast<const Matrix*>(data);
|
---|
| 77 |
|
---|
| 78 | if (!input) {
|
---|
| 79 | self->Warn("casting %s to Matrix failed\n",data->ObjectName().c_str());
|
---|
| 80 | return;
|
---|
| 81 | }
|
---|
| 82 |
|
---|
| 83 | // on prend une fois pour toute les mutex et on fait des accès directs
|
---|
| 84 | output->GetMutex();
|
---|
| 85 | input->GetMutex();
|
---|
| 86 |
|
---|
| 87 | if (T->Value() == 0) {
|
---|
| 88 | delta_t = (float)(data->DataDeltaTime() ) / 1000000000.;
|
---|
| 89 | } else {
|
---|
| 90 | delta_t = T->Value();
|
---|
| 91 | }
|
---|
| 92 |
|
---|
| 93 | if(delta_t!=0) {
|
---|
| 94 | for (int i = 0; i < input->Rows(); i++) {
|
---|
| 95 | for (int j = 0; j < input->Cols(); j++) {
|
---|
| 96 | float cutoff=freq->Value();
|
---|
| 97 | if (cutoff == 0 || freq->ValueChanged()) {
|
---|
| 98 | output->SetValueNoMutex(i, j, input->ValueNoMutex(i, j));
|
---|
| 99 | } else {
|
---|
| 100 | output->SetValueNoMutex(i, j, (1 - 2 * PI * cutoff * delta_t) *
|
---|
| 101 | output->ValueNoMutex(i, j) +
|
---|
| 102 | 2 * PI * cutoff * delta_t *
|
---|
| 103 | input->ValueNoMutex(i, j));
|
---|
| 104 | }
|
---|
| 105 | }
|
---|
| 106 | }
|
---|
| 107 | }
|
---|
| 108 |
|
---|
| 109 | input->ReleaseMutex();
|
---|
| 110 | output->ReleaseMutex();
|
---|
| 111 |
|
---|
| 112 | output->SetDataTime(data->DataTime());
|
---|
| 113 | }
|
---|