/* -*- c++ -*- */
/*
* Copyright 2008-2012 Free Software Foundation, Inc.
*
* This file is part of GNU Radio
*
* GNU Radio is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3, or (at your option)
* any later version.
*
* GNU Radio is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNU Radio; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street,
* Boston, MA 02110-1301, USA.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "sink_c_impl.h"
#include <gnuradio/io_signature.h>
#include <gnuradio/prefs.h>
#include <string.h>
#include <volk/volk.h>
namespace gr {
namespace qtgui {
sink_c::sptr
sink_c::make(int fftsize, int wintype,
double fc, double bw,
const std::string &name,
bool plotfreq, bool plotwaterfall,
bool plottime, bool plotconst,
QWidget *parent)
{
return gnuradio::get_initial_sptr
(new sink_c_impl(fftsize, wintype,
fc, bw, name,
plotfreq, plotwaterfall,
plottime, plotconst,
parent));
}
sink_c_impl::sink_c_impl(int fftsize, int wintype,
double fc, double bw,
const std::string &name,
bool plotfreq, bool plotwaterfall,
bool plottime, bool plotconst,
QWidget *parent)
: block("sink_c",
io_signature::make(1, -1, sizeof(gr_complex)),
io_signature::make(0, 0, 0)),
d_fftsize(fftsize),
d_wintype((filter::firdes::win_type)(wintype)),
d_center_freq(fc), d_bandwidth(bw), d_name(name),
d_plotfreq(plotfreq), d_plotwaterfall(plotwaterfall),
d_plottime(plottime), d_plotconst(plotconst),
d_parent(parent)
{
// Required now for Qt; argc must be greater than 0 and argv
// must have at least one valid character. Must be valid through
// life of the qApplication:
// http://harmattan-dev.nokia.com/docs/library/html/qt4/qapplication.html
d_argc = 1;
d_argv = new char;
d_argv[0] = '\0';
d_main_gui = NULL;
// Perform fftshift operation;
// this is usually desired when plotting
d_shift = true;
d_fft = new fft::fft_complex(d_fftsize, true);
d_index = 0;
d_residbuf = (gr_complex*)volk_malloc(d_fftsize*sizeof(gr_complex),
volk_get_alignment());
d_magbuf = (float*)volk_malloc(d_fftsize*sizeof(float),
volk_get_alignment());
buildwindow();
initialize();
}
sink_c_impl::~sink_c_impl()
{
delete d_main_gui;
delete d_fft;
delete d_argv;
volk_free(d_residbuf);
volk_free(d_magbuf);
}
bool
sink_c_impl::check_topology(int ninputs, int noutputs)
{
return ninputs == 1;
}
void
sink_c_impl::forecast(int noutput_items, gr_vector_int &ninput_items_required)
{
unsigned int ninputs = ninput_items_required.size();
for(unsigned int i = 0; i < ninputs; i++) {
ninput_items_required[i] = std::min(d_fftsize, 8191);
}
}
void
sink_c_impl::initialize()
{
if(qApp != NULL) {
d_qApplication = qApp;
}
else {
std::string style = prefs::singleton()->get_string("qtgui", "style", "raster");
QApplication::setGraphicsSystem(QString(style.c_str()));
d_qApplication = new QApplication(d_argc, &d_argv);
}
// If a style sheet is set in the prefs file, enable it here.
std::string qssfile = prefs::singleton()->get_string("qtgui","qss","");
if(qssfile.size() > 0) {
QString sstext = get_qt_style_sheet(QString(qssfile.c_str()));
d_qApplication->setStyleSheet(sstext);
}
if(d_center_freq < 0) {
throw std::runtime_error("sink_c_impl: Received bad center frequency.\n");
}
uint64_t maxBufferSize = 32768;
d_main_gui = new SpectrumGUIClass(maxBufferSize, d_fftsize,
d_center_freq,
-d_bandwidth,
d_bandwidth);
d_main_gui->setDisplayTitle(d_name);
d_main_gui->setWindowType((int)d_wintype);
set_fft_size(d_fftsize);
d_main_gui->openSpectrumWindow(d_parent,
d_plotfreq, d_plotwaterfall,
d_plottime, d_plotconst);
// initialize update time to 10 times a second
set_update_time(0.5);
d_last_update = gr::high_res_timer_now();
d_update_active = false;
}
void
sink_c_impl::exec_()
{
d_qApplication->exec();
}
QWidget*
sink_c_impl::qwidget()
{
return d_main_gui->qwidget();
}
#ifdef ENABLE_PYTHON
PyObject*
sink_c_impl::pyqwidget()
{
PyObject *w = PyLong_FromVoidPtr((void*)d_main_gui->qwidget());
PyObject *retarg = Py_BuildValue("N", w);
return retarg;
}
#else
void *
sink_c_impl::pyqwidget()
{
return NULL;
}
#endif
void
sink_c_impl::set_fft_size(const int fftsize)
{
d_fftsize = fftsize;
d_main_gui->setFFTSize(fftsize);
}
int
sink_c_impl::fft_size() const
{
return d_fftsize;
}
void
sink_c_impl::set_frequency_range(const double centerfreq,
const double bandwidth)
{
d_center_freq = centerfreq;
d_bandwidth = bandwidth;
d_main_gui->setFrequencyRange(d_center_freq,
-d_bandwidth,
d_bandwidth);
}
void
sink_c_impl::set_fft_power_db(double min, double max)
{
d_main_gui->setFrequencyAxis(min, max);
}
/*
void
sink_c_impl::set_time_domain_axis(double min, double max)
{
d_main_gui->setTimeDomainAxis(min, max);
}
void
sink_c_impl::set_constellation_axis(double xmin, double xmax,
double ymin, double ymax)
{
d_main_gui->setConstellationAxis(xmin, xmax, ymin, ymax);
}
void
sink_c_impl::set_constellation_pen_size(int size)
{
d_main_gui->setConstellationPenSize(size);
}
*/
void
sink_c_impl::set_update_time(double t)
{
d_update_time = t * gr::high_res_timer_tps();
d_main_gui->setUpdateTime(t);
}
void
sink_c_impl::fft(float *data_out, const gr_complex *data_in, int size)
{
if (d_window.size()) {
volk_32fc_32f_multiply_32fc_a(d_fft->get_inbuf(), data_in,
&d_window.front(), size);
}
else {
memcpy (d_fft->get_inbuf(), data_in, sizeof(gr_complex)*size);
}
d_fft->execute (); // compute the fft
volk_32fc_s32f_x2_power_spectral_density_32f_a(data_out, d_fft->get_outbuf(),
size, 1.0, size);
}
void
sink_c_impl::windowreset()
{
filter::firdes::win_type newwintype;
newwintype = (filter::firdes::win_type)d_main_gui->getWindowType();
if(d_wintype != newwintype) {
d_wintype = newwintype;
buildwindow();
}
}
void
sink_c_impl::buildwindow()
{
d_window.clear();
if(d_wintype != 0) {
d_window = filter::firdes::window(d_wintype, d_fftsize, 6.76);
}
}
void
sink_c_impl::fftresize()
{
int newfftsize = d_main_gui->getFFTSize();
if(newfftsize != d_fftsize) {
// Resize residbuf and replace data
volk_free(d_residbuf);
d_residbuf = (gr_complex*)volk_malloc(newfftsize*sizeof(gr_complex),
volk_get_alignment());
volk_free(d_magbuf);
d_magbuf = (float*)volk_malloc(newfftsize*sizeof(float),
volk_get_alignment());
// Set new fft size and reset buffer index
// (throws away any currently held data, but who cares?)
d_fftsize = newfftsize;
d_index = 0;
// Reset window to reflect new size
buildwindow();
// Reset FFTW plan for new size
delete d_fft;
d_fft = new fft::fft_complex (d_fftsize, true);
}
}
int
sink_c_impl::general_work(int noutput_items,
gr_vector_int &ninput_items,
gr_vector_const_void_star &input_items,
gr_vector_void_star &output_items)
{
int j=0;
const gr_complex *in = (const gr_complex*)input_items[0];
// Update the FFT size from the application
fftresize();
windowreset();
for(int i=0; i < noutput_items; i+=d_fftsize) {
unsigned int datasize = noutput_items - i;
unsigned int resid = d_fftsize-d_index;
if (!d_update_active && (gr::high_res_timer_now() - d_last_update) < d_update_time) {
consume_each(noutput_items);
return noutput_items;
}
else {
d_last_update = gr::high_res_timer_now();
d_update_active = true;
}
// If we have enough input for one full FFT, do it
if(datasize >= resid) {
const gr::high_res_timer_type currentTime = gr::high_res_timer_now();
// Fill up residbuf with d_fftsize number of items
memcpy(d_residbuf+d_index, &in[j], sizeof(gr_complex)*resid);
d_index = 0;
j += resid;
fft(d_magbuf, d_residbuf, d_fftsize);
d_main_gui->updateWindow(true, d_magbuf, d_fftsize,
NULL, 0, (float*)d_residbuf, d_fftsize,
currentTime, true);
d_update_active = false;
}
// Otherwise, copy what we received into the residbuf for next time
else {
memcpy(d_residbuf+d_index, &in[j], sizeof(gr_complex)*datasize);
d_index += datasize;
j += datasize;
}
}
consume_each(j);
return j;
}
} /* namespace qtgui */
} /* namespace gr */