iq_tool: implement repeated playback option

Author: vladisslav2011

src/applications/gqrx/mainwindow.cpp

@@ -281,7 +281,7 @@ MainWindow::MainWindow(const QString& cfgfile, bool edit_conf, QWidget *parent)
     // I/Q playback
     connect(iq_tool, SIGNAL(startRecording(QString, enum receiver::file_formats)), this, SLOT(startIqRecording(QString, enum receiver::file_formats)));
     connect(iq_tool, SIGNAL(stopRecording()), this, SLOT(stopIqRecording()));
-    connect(iq_tool, SIGNAL(startPlayback(QString, float, qint64, enum receiver::file_formats)), this, SLOT(startIqPlayback(QString, float, qint64, enum receiver::file_formats)));
+    connect(iq_tool, SIGNAL(startPlayback(QString, float, qint64, enum receiver::file_formats, bool)), this, SLOT(startIqPlayback(QString, float, qint64, enum receiver::file_formats, bool)));
     connect(iq_tool, SIGNAL(stopPlayback()), this, SLOT(stopIqPlayback()));
     connect(iq_tool, SIGNAL(seek(qint64)), this,SLOT(seekIqFile(qint64)));
 
@@ -1643,7 +1643,9 @@ void MainWindow::stopIqRecording()
     ui->actionLoadSettings->setDisabled(false);
 }
 
-void MainWindow::startIqPlayback(const QString& filename, float samprate, qint64 center_freq, enum receiver::file_formats fmt)
+void MainWindow::startIqPlayback(const QString& filename, float samprate,
+                                 qint64 center_freq,
+                                 enum receiver::file_formats fmt, bool repeat)
 {
     if (ui->actionDSP->isChecked())
     {
@@ -1664,7 +1666,7 @@ void MainWindow::startIqPlayback(const QString& filename, float samprate, qint64
 
     rx->set_input_device(devstr.toStdString());
     updateHWFrequencyRange(false);
-    rx->set_input_file(filename.toStdString(), samprate, fmt);
+    rx->set_input_file(filename.toStdString(), samprate, fmt, repeat);
 
     // sample rate
     auto actual_rate = rx->set_input_rate(samprate);

src/applications/gqrx/mainwindow.h

@@ -182,7 +182,8 @@ private slots:
     /* I/Q playback and recording*/
     void startIqRecording(const QString& recdir, enum receiver::file_formats fmt);
     void stopIqRecording();
-    void startIqPlayback(const QString& filename, float samprate, qint64 center_freq, enum receiver::file_formats fmt);
+    void startIqPlayback(const QString& filename, float samprate, qint64 center_freq,
+                         enum receiver::file_formats fmt, bool repeat);
     void stopIqPlayback();
     void seekIqFile(qint64 seek_pos);
 

src/applications/gqrx/receiver.cpp

@@ -262,12 +262,13 @@ void receiver::set_input_device(const std::string device)
  * @param sample_rate
  * @param fmt
  */
-void receiver::set_input_file(const std::string name, const int sample_rate, const enum file_formats fmt)
+void receiver::set_input_file(const std::string name, const int sample_rate,
+                              const enum file_formats fmt, bool repeat)
 {
     std::string error = "";
     size_t sample_size = sample_size_from_format(fmt);
 
-    input_file = gr::blocks::file_source::make(sample_size, name.c_str(), false);
+    input_file = gr::blocks::file_source::make(sample_size, name.c_str(), repeat);
 
     if (d_running)
     {

src/applications/gqrx/receiver.h

@@ -134,7 +134,8 @@ class receiver
     void        stop();
     void        set_input_device(const std::string device);
     void        set_output_device(const std::string device);
-    void        set_input_file(const std::string name, const int sample_rate, const enum file_formats fmt);
+    void        set_input_file(const std::string name, const int sample_rate,
+                               const enum file_formats fmt, bool repeat);
 
     std::vector<std::string> get_antennas(void) const;
     void        set_antenna(const std::string &antenna);

src/qtgui/iq_tool.cpp

@@ -124,6 +124,7 @@ void CIqTool::switchControlsState(bool recording, bool playback)
     ui->recDirEdit->setEnabled(!(recording || playback));
     ui->recDirButton->setEnabled(!(recording || playback));
     ui->formatCombo->setEnabled(!(recording || playback));
+    ui->repeat->setEnabled(!(recording || playback));
 }
 
 /*! \brief Start/stop playback */
@@ -155,7 +156,8 @@ void CIqTool::on_playButton_clicked(bool checked)
             switchControlsState(false, true);
 
             emit startPlayback(recdir->absoluteFilePath(current_file),
-                               (float)sample_rate, center_freq, fmt);
+                               (float)sample_rate, center_freq, fmt,
+                               ui->repeat->checkState() == Qt::Checked);
         }
     }
     else

src/qtgui/iq_tool.h

@@ -66,7 +66,8 @@ class CIqTool : public QDialog
 signals:
     void startRecording(const QString recdir, enum receiver::file_formats fmt);
     void stopRecording();
-    void startPlayback(const QString filename, float samprate, qint64 center_freq, enum receiver::file_formats fmt);
+    void startPlayback(const QString filename, float samprate, qint64 center_freq,
+                       enum receiver::file_formats fmt, bool repeat);
     void stopPlayback();
     void seek(qint64 seek_pos);
 

src/qtgui/iq_tool.ui

@@ -158,6 +158,16 @@
        </property>
       </widget>
      </item>
+     <item>
+      <widget class="QCheckBox" name="repeat">
+       <property name="locale">
+        <locale language="C" country="AnyCountry"/>
+       </property>
+       <property name="text">
+        <string>Repeat</string>
+       </property>
+      </widget>
+     </item>
      <item>
       <spacer name="horizontalSpacer">
        <property name="orientation">