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_c.h>
28 #include <gr_io_signature.h>
34 qtgui_make_sink_c (int fftsize, int wintype,
35 float fmin, float fmax,
36 const std::string &name,
37 bool plotfreq, bool plotwaterfall,
38 bool plotwaterfall3d, bool plottime,
42 return qtgui_sink_c_sptr (new qtgui_sink_c (fftsize, wintype,
44 plotfreq, plotwaterfall,
45 plotwaterfall3d, plottime,
50 qtgui_sink_c::qtgui_sink_c (int fftsize, int wintype,
51 float fmin, float fmax,
52 const std::string &name,
53 bool plotfreq, bool plotwaterfall,
54 bool plotwaterfall3d, bool plottime,
58 gr_make_io_signature (1, -1, sizeof(gr_complex)),
59 gr_make_io_signature (0, 0, 0)),
61 d_wintype((gr_firdes::win_type)(wintype)),
62 d_fmin(fmin), d_fmax(fmax), d_name(name),
63 d_plotfreq(plotfreq), d_plotwaterfall(plotwaterfall),
64 d_plotwaterfall3d(plotwaterfall3d), d_plottime(plottime),
65 d_plotconst(plotconst),
69 pthread_mutex_init(&d_pmutex, NULL);
72 // Perform fftshift operation;
73 // this is usually desired when plotting
76 d_fft = new gri_fft_complex (d_fftsize, true);
78 d_fftdata = new gr_complex[d_fftsize];
81 d_residbuf = new gr_complex[d_fftsize];
88 qtgui_sink_c::~qtgui_sink_c()
96 void qtgui_sink_c::lock()
98 pthread_mutex_lock(&d_pmutex);
101 void qtgui_sink_c::unlock()
103 pthread_mutex_unlock(&d_pmutex);
108 qtgui_sink_c::initialize()
111 d_qApplication = qApp;
116 d_qApplication = new QApplication(argc, argv);
119 uint64_t maxBufferSize = 32768;
120 d_main_gui = new SpectrumGUIClass(maxBufferSize, d_fftsize,
123 d_main_gui->SetDisplayTitle(d_name);
124 d_main_gui->SetFFTSize(d_fftsize);
125 d_main_gui->SetWindowType((int)d_wintype);
127 d_main_gui->OpenSpectrumWindow(d_parent,
128 d_plotfreq, d_plotwaterfall,
129 d_plotwaterfall3d, d_plottime,
132 d_object = new qtgui_obj(d_qApplication);
133 qApp->postEvent(d_object, new qtgui_event(&d_pmutex));
138 qtgui_sink_c::exec_()
140 d_qApplication->exec();
144 qtgui_sink_c::qwidget()
146 return d_main_gui->qwidget();
150 qtgui_sink_c::pyqwidget()
152 PyObject *w = PyLong_FromVoidPtr((void*)d_main_gui->qwidget());
153 PyObject *retarg = Py_BuildValue("N", w);
158 qtgui_sink_c::set_frequency_range(const double centerfreq,
159 const double startfreq,
160 const double stopfreq)
162 d_main_gui->SetFrequencyRange(centerfreq, startfreq, stopfreq);
166 qtgui_sink_c::set_time_domain_axis(double min, double max)
168 d_main_gui->SetTimeDomainAxis(min, max);
172 qtgui_sink_c::set_constellation_axis(double xmin, double xmax,
173 double ymin, double ymax)
175 d_main_gui->SetConstellationAxis(xmin, xmax, ymin, ymax);
179 qtgui_sink_c::fft(const gr_complex *data_in, int size, gr_complex *data_out)
181 if (d_window.size()) {
182 gr_complex *dst = d_fft->get_inbuf();
184 for (i = 0; i < size; i++) // apply window
185 dst[i] = data_in[i] * d_window[i];
188 memcpy (d_fft->get_inbuf(), data_in, sizeof(gr_complex)*size);
191 d_fft->execute (); // compute the fft
193 for(int i=0; i < size; i++) {
194 d_fft->get_outbuf()[i] /= size;
197 // copy result to our output
198 if(d_shift) { // apply a fft shift on the data
199 unsigned int len = (unsigned int)(ceil(size/2.0));
200 memcpy(&data_out[0], &d_fft->get_outbuf()[len], sizeof(gr_complex)*(size - len));
201 memcpy(&data_out[size - len], &d_fft->get_outbuf()[0], sizeof(gr_complex)*len);
204 memcpy(data_out, d_fft->get_outbuf(), sizeof(gr_complex)*size);
209 qtgui_sink_c::windowreset()
211 gr_firdes::win_type newwintype = (gr_firdes::win_type)d_main_gui->GetWindowType();
212 if(d_wintype != newwintype) {
213 d_wintype = newwintype;
219 qtgui_sink_c::buildwindow()
223 d_window = gr_firdes::window(d_wintype, d_fftsize, 6.76);
228 qtgui_sink_c::fftresize()
230 int newfftsize = d_main_gui->GetFFTSize();
232 if(newfftsize != d_fftsize) {
234 // Resize the fftdata buffer; no need to preserve old data
236 d_fftdata = new gr_complex[newfftsize];
238 // Resize residbuf and replace data
239 delete [] d_residbuf;
240 d_residbuf = new gr_complex[newfftsize];
242 // Set new fft size and reset buffer index
243 // (throws away any currently held data, but who cares?)
244 d_fftsize = newfftsize;
247 // Reset window to reflect new size
250 // Reset FFTW plan for new size
252 d_fft = new gri_fft_complex (d_fftsize, true);
258 qtgui_sink_c::general_work (int noutput_items,
259 gr_vector_int &ninput_items,
260 gr_vector_const_void_star &input_items,
261 gr_vector_void_star &output_items)
264 const gr_complex *in = (const gr_complex*)input_items[0];
266 pthread_mutex_lock(&d_pmutex);
268 // Update the FFT size from the application
272 const timespec currentTime = get_highres_clock();
273 const timespec lastUpdateGUITime = d_main_gui->GetLastGUIUpdateTime();
275 if(diff_timespec(currentTime, lastUpdateGUITime) > 0.25) {
278 int filler = std::min(d_fftsize - d_index, noutput_items);
280 memcpy(&d_residbuf[d_index], &in[0], sizeof(gr_complex)*filler);
286 if(d_index == d_fftsize) {
288 fft(d_residbuf, d_fftsize, d_fftdata);
290 d_main_gui->UpdateWindow(true, d_fftdata, d_fftsize, NULL, 0,
291 (float*)d_residbuf, d_fftsize,
292 1.0/4.0, convert_to_timespec(0.0), true);
295 for(; i < noutput_items; i+=d_fftsize) {
296 if(noutput_items - i > d_fftsize) {
298 fft(&in[i], d_fftsize, d_fftdata);
300 d_main_gui->UpdateWindow(true, d_fftdata, d_fftsize, NULL, 0,
301 (float*)&in[i], d_fftsize,
302 1.0/4.0, convert_to_timespec(0.0), true);
306 if(noutput_items > j) {
307 d_index = noutput_items - j;
308 memcpy(d_residbuf, &in[j], sizeof(gr_complex)*d_index);
312 pthread_mutex_unlock(&d_pmutex);
314 consume_each(noutput_items);
315 return noutput_items;