File source plugin: added total record time in UI

plugins/samplesource/filesource/filesourcegui.cpp

@@ -38,6 +38,7 @@ FileSourceGui::FileSourceGui(PluginAPI* pluginAPI, QWidget* parent) :
 	m_fileName("..."),
 	m_sampleRate(0),
 	m_centerFrequency(0),
+	m_recordLength(0),
 	m_startingTimeStamp(0),
 	m_samplesCount(0),
 	m_tickCount(0)
@@ -124,6 +125,7 @@ bool FileSourceGui::handleMessage(const Message& message)
 		m_sampleRate = ((FileSourceInput::MsgReportFileSourceStreamData&)message).getSampleRate();
 		m_centerFrequency = ((FileSourceInput::MsgReportFileSourceStreamData&)message).getCenterFrequency();
 		m_startingTimeStamp = ((FileSourceInput::MsgReportFileSourceStreamData&)message).getStartingTimeStamp();
+		m_recordLength = ((FileSourceInput::MsgReportFileSourceStreamData&)message).getRecordLength();
 		updateWithStreamData();
 		return true;
 	}
@@ -205,6 +207,10 @@ void FileSourceGui::updateWithStreamData()
 	QString s = QString::number(m_sampleRate/1000.0, 'f', 0);
 	ui->sampleRateText->setText(tr("%1k").arg(s));
 	ui->play->setEnabled(m_acquisition);
+	QTime recordLength(0, 0, 0, 0);
+	recordLength = recordLength.addSecs(m_recordLength);
+	QString s_time = recordLength.toString("hh:mm:ss");
+	ui->recordLengthText->setText(s_time);
 	updateWithStreamTime(); // TODO: remove when time data is implemented
 }
 

plugins/samplesource/filesource/filesourcegui.h

@@ -58,6 +58,7 @@ private:
     QString m_fileName;
 	int m_sampleRate;
 	quint64 m_centerFrequency;
+	quint32 m_recordLength;
 	std::time_t m_startingTimeStamp;
 	int m_samplesCount;
 	std::size_t m_tickCount;

plugins/samplesource/filesource/filesourcegui.ui

@@ -6,7 +6,7 @@
    <rect>
     <x>0</x>
     <y>0</y>
-    <width>266</width>
+    <width>289</width>
     <height>133</height>
    </rect>
   </property>
@@ -303,7 +303,7 @@
       </spacer>
      </item>
      <item>
-      <widget class="Line" name="relTimeLine">
+      <widget class="Line" name="linePlay1">
        <property name="orientation">
         <enum>Qt::Vertical</enum>
        </property>
@@ -331,6 +331,35 @@
        </property>
       </widget>
      </item>
+     <item>
+      <widget class="Line" name="linePlay2">
+       <property name="orientation">
+        <enum>Qt::Vertical</enum>
+       </property>
+      </widget>
+     </item>
+     <item>
+      <widget class="QLabel" name="recordLengthText">
+       <property name="enabled">
+        <bool>false</bool>
+       </property>
+       <property name="minimumSize">
+        <size>
+         <width>60</width>
+         <height>0</height>
+        </size>
+       </property>
+       <property name="toolTip">
+        <string>Total record time</string>
+       </property>
+       <property name="text">
+        <string>00:00:00</string>
+       </property>
+       <property name="alignment">
+        <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+       </property>
+      </widget>
+     </item>
     </layout>
    </item>
   </layout>

plugins/samplesource/filesource/filesourceinput.cpp

@@ -78,6 +78,7 @@ FileSourceInput::FileSourceInput(const QTimer& masterTimer) :
 	m_fileName("..."),
 	m_sampleRate(0),
 	m_centerFrequency(0),
+	m_recordLength(0),
 	m_startingTimeStamp(0),
 	m_masterTimer(masterTimer)
 {
@@ -90,15 +91,15 @@ FileSourceInput::~FileSourceInput()
 
 void FileSourceInput::openFileStream()
 {
-	qDebug() << "FileSourceInput::openFileStream: " << m_fileName.toStdString().c_str();
-
 	//stopInput();
 
 	if (m_ifstream.is_open()) {
 		m_ifstream.close();
 	}
 
-	m_ifstream.open(m_fileName.toStdString().c_str(), std::ios::binary);
+	m_ifstream.open(m_fileName.toStdString().c_str(), std::ios::binary | std::ios::ate);
+	quint64 fileSize = m_ifstream.tellg();
+	m_ifstream.seekg(0,std::ios_base::beg);
 	FileSink::Header header;
 	FileSink::readHeader(m_ifstream, header);
 
@@ -106,7 +107,20 @@ void FileSourceInput::openFileStream()
 	m_centerFrequency = header.centerFrequency;
 	m_startingTimeStamp = header.startTimeStamp;
 
-	MsgReportFileSourceStreamData *report = MsgReportFileSourceStreamData::create(m_sampleRate, m_centerFrequency, m_startingTimeStamp); // file stream data
+	if (fileSize > sizeof(FileSink::Header)) {
+		m_recordLength = (fileSize - sizeof(FileSink::Header)) / (4 * m_sampleRate);
+	} else {
+		m_recordLength = 0;
+	}
+
+	qDebug() << "FileSourceInput::openFileStream: " << m_fileName.toStdString().c_str()
+			<< " fileSize: " << fileSize << "bytes"
+			<< " length: " << m_recordLength << " seconds";
+
+	MsgReportFileSourceStreamData *report = MsgReportFileSourceStreamData::create(m_sampleRate,
+			m_centerFrequency,
+			m_startingTimeStamp,
+			m_recordLength); // file stream data
 	getOutputMessageQueueToGUI()->push(report);
 }
 

plugins/samplesource/filesource/filesourceinput.h

@@ -141,22 +141,31 @@ public:
 		int getSampleRate() const { return m_sampleRate; }
 		quint64 getCenterFrequency() const { return m_centerFrequency; }
 		std::time_t getStartingTimeStamp() const { return m_startingTimeStamp; }
+		quint32 getRecordLength() const { return m_recordLength; }
 
-		static MsgReportFileSourceStreamData* create(int sampleRate, quint64 centerFrequency, std::time_t startingTimeStamp)
+		static MsgReportFileSourceStreamData* create(int sampleRate,
+				quint64 centerFrequency,
+				std::time_t startingTimeStamp,
+				quint32 recordLength)
 		{
-			return new MsgReportFileSourceStreamData(sampleRate, centerFrequency, startingTimeStamp);
+			return new MsgReportFileSourceStreamData(sampleRate, centerFrequency, startingTimeStamp, recordLength);
 		}
 
 	protected:
 		int m_sampleRate;
 		quint64 m_centerFrequency;
 		std::time_t m_startingTimeStamp;
+		quint32 m_recordLength;
 
-		MsgReportFileSourceStreamData(int sampleRate, quint64 centerFrequency, std::time_t startingTimeStamp) :
+		MsgReportFileSourceStreamData(int sampleRate,
+				quint64 centerFrequency,
+				std::time_t startingTimeStamp,
+				quint32 recordLength) :
 			Message(),
 			m_sampleRate(sampleRate),
 			m_centerFrequency(centerFrequency),
-			m_startingTimeStamp(startingTimeStamp)
+			m_startingTimeStamp(startingTimeStamp),
+			m_recordLength(recordLength)
 		{ }
 	};
 
@@ -203,6 +212,7 @@ private:
 	QString m_fileName;
 	int m_sampleRate;
 	quint64 m_centerFrequency;
+	quint32 m_recordLength; //!< record length in seconds computed from file size
 	std::time_t m_startingTimeStamp;
 	const QTimer& m_masterTimer;