3 * Copyright 2008,2009 Free Software Foundation, Inc.
5 * This file is part of GNU Radio
7 * GNU Radio is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 3, or (at your option)
12 * GNU Radio is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with GNU Radio; see the file COPYING. If not, write to
19 * the Free Software Foundation, Inc., 51 Franklin Street,
20 * Boston, MA 02110-1301, USA.
27 #include <qtgui_sink_f.h>
28 #include <gr_io_signature.h>
34 qtgui_make_sink_f (int fftsize, int wintype,
36 const std::string &name,
37 bool plotfreq, bool plotwaterfall,
38 bool plotwaterfall3d, bool plottime,
43 return qtgui_sink_f_sptr (new qtgui_sink_f (fftsize, wintype,
45 plotfreq, plotwaterfall,
46 plotwaterfall3d, plottime,
52 qtgui_sink_f::qtgui_sink_f (int fftsize, int wintype,
54 const std::string &name,
55 bool plotfreq, bool plotwaterfall,
56 bool plotwaterfall3d, bool plottime,
61 gr_make_io_signature (1, 1, sizeof(float)),
62 gr_make_io_signature (0, 0, 0)),
64 d_wintype((gr_firdes::win_type)(wintype)),
65 d_center_freq(fc), d_bandwidth(bw), d_name(name),
66 d_plotfreq(plotfreq), d_plotwaterfall(plotwaterfall),
67 d_plotwaterfall3d(plotwaterfall3d), d_plottime(plottime),
68 d_plotconst(plotconst),
72 pthread_mutex_init(&d_pmutex, NULL);
75 // Perform fftshift operation;
76 // this is usually desired when plotting
79 d_fft = new gri_fft_complex (d_fftsize, true);
81 d_fftdata = new gr_complex[d_fftsize];
84 d_residbuf = new float[d_fftsize];
88 initialize(use_openGL);
91 qtgui_sink_f::~qtgui_sink_f()
99 void qtgui_sink_f::lock()
101 pthread_mutex_lock(&d_pmutex);
104 void qtgui_sink_f::unlock()
106 pthread_mutex_unlock(&d_pmutex);
110 qtgui_sink_f::initialize(const bool opengl)
113 d_qApplication = qApp;
118 d_qApplication = new QApplication(argc, argv);
122 uint64_t maxBufferSize = 32768;
123 d_main_gui = new SpectrumGUIClass(maxBufferSize, d_fftsize,
127 d_main_gui->SetDisplayTitle(d_name);
128 d_main_gui->SetFFTSize(d_fftsize);
129 d_main_gui->SetWindowType((int)d_wintype);
131 d_main_gui->OpenSpectrumWindow(d_parent,
132 d_plotfreq, d_plotwaterfall,
133 d_plotwaterfall3d, d_plottime,
137 d_object = new qtgui_obj(d_qApplication);
138 qApp->postEvent(d_object, new qtgui_event(&d_pmutex));
142 qtgui_sink_f::exec_()
144 d_qApplication->exec();
148 qtgui_sink_f::qwidget()
150 return d_main_gui->qwidget();
154 qtgui_sink_f::pyqwidget()
156 PyObject *w = PyLong_FromVoidPtr((void*)d_main_gui->qwidget());
157 PyObject *retarg = Py_BuildValue("N", w);
162 qtgui_sink_f::set_frequency_range(const double centerfreq,
163 const double bandwidth)
165 d_center_freq = centerfreq;
166 d_bandwidth = bandwidth;
167 d_main_gui->SetFrequencyRange(d_center_freq,
173 qtgui_sink_f::set_time_domain_axis(double min, double max)
175 d_main_gui->SetTimeDomainAxis(min, max);
179 qtgui_sink_f::set_constellation_axis(double xmin, double xmax,
180 double ymin, double ymax)
182 d_main_gui->SetConstellationAxis(xmin, xmax, ymin, ymax);
186 qtgui_sink_f::set_frequency_axis(double min, double max)
188 d_main_gui->SetFrequencyAxis(min, max);
192 qtgui_sink_f::fft(const float *data_in, int size, gr_complex *data_out)
194 if (d_window.size()) {
195 gr_complex *dst = d_fft->get_inbuf();
196 for (int i = 0; i < size; i++) // apply window
197 dst[i] = data_in[i] * d_window[i];
200 gr_complex *dst = d_fft->get_inbuf();
201 for (int i = 0; i < size; i++) // float to complex conversion
205 d_fft->execute (); // compute the fft
207 for(int i=0; i < size; i++) {
208 d_fft->get_outbuf()[i] /= size;
211 // copy result to our output
212 if(d_shift) { // apply a fft shift on the data
213 unsigned int len = (unsigned int)(ceil(size/2.0));
214 memcpy(&data_out[0], &d_fft->get_outbuf()[len], sizeof(gr_complex)*(size - len));
215 memcpy(&data_out[size - len], &d_fft->get_outbuf()[0], sizeof(gr_complex)*len);
218 memcpy(data_out, d_fft->get_outbuf(), sizeof(gr_complex)*size);
223 qtgui_sink_f::windowreset()
225 gr_firdes::win_type newwintype = (gr_firdes::win_type)d_main_gui->GetWindowType();
226 if(d_wintype != newwintype) {
227 d_wintype = newwintype;
233 qtgui_sink_f::buildwindow()
237 d_window = gr_firdes::window(d_wintype, d_fftsize, 6.76);
242 qtgui_sink_f::fftresize()
244 int newfftsize = d_main_gui->GetFFTSize();
246 if(newfftsize != d_fftsize) {
248 // Resize the fftdata buffer; no need to preserve old data
250 d_fftdata = new gr_complex[newfftsize];
252 // Resize residbuf and replace data
253 delete [] d_residbuf;
254 d_residbuf = new float[newfftsize];
256 // Set new fft size and reset buffer index
257 // (throws away any currently held data, but who cares?)
258 d_fftsize = newfftsize;
261 // Reset window to reflect new size
264 // Reset FFTW plan for new size
266 d_fft = new gri_fft_complex (d_fftsize, true);
272 qtgui_sink_f::general_work (int noutput_items,
273 gr_vector_int &ninput_items,
274 gr_vector_const_void_star &input_items,
275 gr_vector_void_star &output_items)
278 const float *in = (const float*)input_items[0];
280 pthread_mutex_lock(&d_pmutex);
283 int filler = std::min(d_fftsize - d_index, noutput_items);
284 memcpy(&d_residbuf[d_index], &in[0], sizeof(float)*filler);
290 if(d_index == d_fftsize) {
292 fft(d_residbuf, d_fftsize, d_fftdata);
294 d_main_gui->UpdateWindow(true, d_fftdata, d_fftsize,
295 d_residbuf, d_fftsize, NULL, 0,
296 1.0/4.0, convert_to_timespec(0.0), true);
299 for(; i < noutput_items; i+=d_fftsize) {
300 if(noutput_items - i > d_fftsize) {
302 fft(&in[i], d_fftsize, d_fftdata);
304 d_main_gui->UpdateWindow(true, d_fftdata, d_fftsize, &in[i],
305 d_fftsize, NULL, 0, 1.0/4.0,
306 convert_to_timespec(0.0), true);
310 if(noutput_items > j) {
311 d_index = noutput_items - j;
312 memcpy(d_residbuf, &in[j], sizeof(float)*d_index);
315 pthread_mutex_unlock(&d_pmutex);
317 consume_each(noutput_items);
318 return noutput_items;