Multi device support: moved DSPDeviceEngine start/stop actions and status from main window to each source plugin GUI

plugins/samplesource/bladerf/bladerfgui.cpp

@@ -15,6 +15,8 @@
 ///////////////////////////////////////////////////////////////////////////////////
 
 #include <QDebug>
+#include <QMessageBox>
+
 #include <libbladeRF.h>
 
 #include "ui_bladerfgui.h"
@@ -28,7 +30,8 @@ BladerfGui::BladerfGui(PluginAPI* pluginAPI, QWidget* parent) :
 	ui(new Ui::BladerfGui),
 	m_pluginAPI(pluginAPI),
 	m_settings(),
-	m_sampleSource(NULL)
+	m_sampleSource(NULL),
+	m_lastEngineState((DSPDeviceEngine::State)-1)
 {
 	ui->setupUi(this);
 	ui->centerFrequency->setColorMapper(ColorMapper(ColorMapper::ReverseGold));
@@ -47,6 +50,9 @@ BladerfGui::BladerfGui(PluginAPI* pluginAPI, QWidget* parent) :
 	}
 
 	connect(&m_updateTimer, SIGNAL(timeout()), this, SLOT(updateHardware()));
+	connect(&m_statusTimer, SIGNAL(timeout()), this, SLOT(updateStatus()));
+	m_statusTimer.start(500);
+
 	displaySettings();
 
 	m_sampleSource = new BladerfInput();
@@ -302,6 +308,23 @@ void BladerfGui::on_xb200_currentIndexChanged(int index)
 	sendSettings();
 }
 
+void BladerfGui::on_startStop_toggled(bool checked)
+{
+    if (checked)
+    {
+        if (m_pluginAPI->initAcquisition())
+        {
+            m_pluginAPI->startAcquisition();
+            DSPEngine::instance()->startAudio();
+        }
+    }
+    else
+    {
+        m_pluginAPI->stopAcquistion();
+        DSPEngine::instance()->stopAudio();
+    }
+}
+
 void BladerfGui::updateHardware()
 {
 	qDebug() << "BladerfGui::updateHardware";
@@ -310,6 +333,35 @@ void BladerfGui::updateHardware()
 	m_updateTimer.stop();
 }
 
+void BladerfGui::updateStatus()
+{
+    int state = m_pluginAPI->state();
+
+    if(m_lastEngineState != state)
+    {
+        switch(state)
+        {
+            case DSPDeviceEngine::StNotStarted:
+                ui->startStop->setStyleSheet("QToolButton { background:rgb(79,79,79); }");
+                break;
+            case DSPDeviceEngine::StIdle:
+                ui->startStop->setStyleSheet("QToolButton { background-color : blue; }");
+                break;
+            case DSPDeviceEngine::StRunning:
+                ui->startStop->setStyleSheet("QToolButton { background-color : green; }");
+                break;
+            case DSPDeviceEngine::StError:
+                ui->startStop->setStyleSheet("QToolButton { background-color : red; }");
+                QMessageBox::information(this, tr("Message"), m_pluginAPI->errorMessage());
+                break;
+            default:
+                break;
+        }
+
+        m_lastEngineState = state;
+    }
+}
+
 unsigned int BladerfGui::getXb200Index(bool xb_200, bladerf_xb200_path xb200Path, bladerf_xb200_filter xb200Filter)
 {
 	if (xb_200)

plugins/samplesource/bladerf/bladerfgui.h

@@ -53,8 +53,10 @@ private:
 	PluginAPI* m_pluginAPI;
 	BladeRFSettings m_settings;
 	QTimer m_updateTimer;
+	QTimer m_statusTimer;
 	std::vector<int> m_gains;
 	SampleSource* m_sampleSource;
+	int m_lastEngineState;
 
 	void displaySettings();
 	void sendSettings();
@@ -72,7 +74,9 @@ private slots:
 	void on_vga2_valueChanged(int value);
 	void on_xb200_currentIndexChanged(int index);
 	void on_fcPos_currentIndexChanged(int index);
+	void on_startStop_toggled(bool checked);
 	void updateHardware();
+	void updateStatus();
 };
 
 class BladerfSampleRates {

plugins/samplesource/bladerf/bladerfgui.ui

@@ -35,7 +35,7 @@
    <item>
     <layout class="QHBoxLayout" name="horizontalLayout_freq">
      <item>
-      <widget class="ButtonSwitch" name="startStopButton">
+      <widget class="ButtonSwitch" name="startStop">
        <property name="text">
         <string/>
        </property>