Add new information to the format properties side bar

Improve InputStream and LibAvHandle to detect the stream
duration in order to present it on the side bar
Improvements in the LibAvHandle to return NOFMT if format is unknown

source/app/InputStream.cpp

@@ -133,10 +133,9 @@ Bool InputStream::open( QString filename, UInt width, UInt height, Int input_for
 #ifdef USE_FFMPEG
   if( QFileInfo( filename ).completeSuffix().compare( QString( "yuv" ) ) )
   {
-    avStatus = m_cLibAvContext.initAvFormat( m_cFilename.toLocal8Bit().data(), m_uiWidth, m_uiHeight, m_iPixelFormat, m_uiFrameRate );
+    avStatus = m_cLibAvContext.initAvFormat( m_cFilename.toLocal8Bit().data(), m_uiWidth, m_uiHeight, m_iPixelFormat, m_uiFrameRate, m_uiTotalFrameNum );
     m_cFormatName = QFileInfo( filename ).completeSuffix().toUpper();
     m_cCodedName = QString::fromUtf8( m_cLibAvContext.getCodecName() ).toUpper();
-    m_uiTotalFrameNum = 100;
   }
 #endif
 
@@ -222,7 +221,9 @@ Void InputStream::close()
   if( m_pInputBuffer )
     freeMem1D<Pel>( m_pInputBuffer );
 
-  qDebug() << "Frame read time: " << QString::number( 1000 / (m_uiAveragePlayInterval+1) ) << " fps";
+  qDebug( ) << "Frame read time: "
+            << QString::number( 1000 / ( m_uiAveragePlayInterval + 1 ) )
+            << " fps";
 
   m_bInit = false;
 }
@@ -286,6 +287,28 @@ Bool InputStream::guessFormat( QString filename, UInt& rWidth, UInt& rHeight, In
   return bRet;
 }
 
+Void InputStream::getDuration( Int* duration_array )
+{
+  Int hours, mins, secs;
+#ifdef USE_FFMPEG
+  if( m_cLibAvContext.getStatus() )
+  {
+    secs = m_cLibAvContext.getStreamDuration();
+  }
+  else
+#endif
+  {
+    secs = m_uiTotalFrameNum * m_uiFrameRate;
+  }
+  mins = secs / 60;
+  secs %= 60;
+  hours = mins / 60;
+  mins %= 60;
+  *duration_array++ = hours;
+  *duration_array++ = mins;
+  *duration_array++ = secs;
+}
+
 Void InputStream::readNextFrame()
 {
   UInt64 bytes_read = 0;
@@ -396,7 +419,7 @@ Void InputStream::seekInput( UInt64 new_frame_num )
   readNextFrame();
   setNextFrame();
   if( m_uiTotalFrameNum > 1 )
-      readNextFrame();
+    readNextFrame();
 }
 
 Bool InputStream::checkErrors( Int error_type )