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,
35 float fmin, float fmax,
36 const std::string &name,
37 bool plotfreq, bool plotwaterfall,
38 bool plotwaterfall3d, bool plottime,
42 return qtgui_sink_f_sptr (new qtgui_sink_f (fftsize, wintype,
44 plotfreq, plotwaterfall,
45 plotwaterfall3d, plottime,
50 qtgui_sink_f::qtgui_sink_f (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(float)),
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 float[d_fftsize];
88 qtgui_sink_f::~qtgui_sink_f()
96 void qtgui_sink_f::lock()
98 pthread_mutex_lock(&d_pmutex);
101 void qtgui_sink_f::unlock()
103 pthread_mutex_unlock(&d_pmutex);
107 qtgui_sink_f::initialize()
110 d_qApplication = qApp;
115 d_qApplication = new QApplication(argc, argv);
119 uint64_t maxBufferSize = 32768;
120 d_main_gui = new SpectrumGUIClass(maxBufferSize, d_fftsize,
122 d_main_gui->SetDisplayTitle(d_name);
123 d_main_gui->SetFFTSize(d_fftsize);
124 d_main_gui->SetWindowType((int)d_wintype);
126 d_main_gui->OpenSpectrumWindow(d_parent,
127 d_plotfreq, d_plotwaterfall,
128 d_plotwaterfall3d, d_plottime,
131 d_object = new qtgui_obj(d_qApplication);
132 qApp->postEvent(d_object, new qtgui_event(&d_pmutex));
136 qtgui_sink_f::exec_()
138 d_qApplication->exec();
142 qtgui_sink_f::qwidget()
144 return d_main_gui->qwidget();
148 qtgui_sink_f::pyqwidget()
150 PyObject *w = PyLong_FromVoidPtr((void*)d_main_gui->qwidget());
151 PyObject *retarg = Py_BuildValue("N", w);
156 qtgui_sink_f::set_frequency_range(const double centerfreq,
157 const double startfreq,
158 const double stopfreq)
160 d_main_gui->SetFrequencyRange(centerfreq, startfreq, stopfreq);
164 qtgui_sink_f::fft(const float *data_in, int size, gr_complex *data_out)
166 if (d_window.size()) {
167 gr_complex *dst = d_fft->get_inbuf();
168 for (int i = 0; i < size; i++) // apply window
169 dst[i] = data_in[i] * d_window[i];
172 gr_complex *dst = d_fft->get_inbuf();
173 for (int i = 0; i < size; i++) // float to complex conversion
177 d_fft->execute (); // compute the fft
179 for(int i=0; i < size; i++) {
180 d_fft->get_outbuf()[i] /= size;
183 // copy result to our output
184 if(d_shift) { // apply a fft shift on the data
185 unsigned int len = (unsigned int)(ceil(size/2.0));
186 memcpy(&data_out[0], &d_fft->get_outbuf()[len], sizeof(gr_complex)*(size - len));
187 memcpy(&data_out[size - len], &d_fft->get_outbuf()[0], sizeof(gr_complex)*len);
190 memcpy(data_out, d_fft->get_outbuf(), sizeof(gr_complex)*size);
195 qtgui_sink_f::windowreset()
197 gr_firdes::win_type newwintype = (gr_firdes::win_type)d_main_gui->GetWindowType();
198 if(d_wintype != newwintype) {
199 d_wintype = newwintype;
205 qtgui_sink_f::buildwindow()
209 d_window = gr_firdes::window(d_wintype, d_fftsize, 6.76);
214 qtgui_sink_f::fftresize()
216 int newfftsize = d_main_gui->GetFFTSize();
218 if(newfftsize != d_fftsize) {
220 // Resize the fftdata buffer; no need to preserve old data
222 d_fftdata = new gr_complex[newfftsize];
224 // Resize residbuf and replace data
225 delete [] d_residbuf;
226 d_residbuf = new float[newfftsize];
228 // Set new fft size and reset buffer index
229 // (throws away any currently held data, but who cares?)
230 d_fftsize = newfftsize;
233 // Reset window to reflect new size
236 // Reset FFTW plan for new size
238 d_fft = new gri_fft_complex (d_fftsize, true);
244 qtgui_sink_f::general_work (int noutput_items,
245 gr_vector_int &ninput_items,
246 gr_vector_const_void_star &input_items,
247 gr_vector_void_star &output_items)
250 const float *in = (const float*)input_items[0];
252 pthread_mutex_lock(&d_pmutex);
255 int filler = std::min(d_fftsize - d_index, noutput_items);
256 memcpy(&d_residbuf[d_index], &in[0], sizeof(float)*filler);
262 if(d_index == d_fftsize) {
264 fft(d_residbuf, d_fftsize, d_fftdata);
266 d_main_gui->UpdateWindow(true, d_fftdata, d_fftsize,
267 d_residbuf, d_fftsize, NULL, 0,
268 1.0/4.0, convert_to_timespec(0.0), true);
271 for(; i < noutput_items; i+=d_fftsize) {
272 if(noutput_items - i > d_fftsize) {
274 fft(&in[i], d_fftsize, d_fftdata);
276 d_main_gui->UpdateWindow(true, d_fftdata, d_fftsize, &in[i],
277 d_fftsize, NULL, 0, 1.0/4.0,
278 convert_to_timespec(0.0), true);
282 if(noutput_items > j) {
283 d_index = noutput_items - j;
284 memcpy(d_residbuf, &in[j], sizeof(float)*d_index);
287 pthread_mutex_unlock(&d_pmutex);
289 consume_each(noutput_items);
290 return noutput_items;