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[FrontAlgorithms.git] / lib / fpa / Filters / QueueAlgorithm.hxx

diff --git a/lib/fpa/Filters/QueueAlgorithm.hxx b/lib/fpa/Filters/QueueAlgorithm.hxx
new file mode 100644 (file)
index 0000000..aa51d5d
--- /dev/null
+++ b/lib/fpa/Filters/QueueAlgorithm.hxx
@@ -0,0 +1,74 @@
+// =========================================================================
+// @author Leonardo Florez Valencia
+// @email florez-l@javeriana.edu.co
+// =========================================================================
+#ifndef __fpa__Filters__QueueAlgorithm__hxx__
+#define __fpa__Filters__QueueAlgorithm__hxx__
+
+// -------------------------------------------------------------------------
+template< class _TDataInterface >
+fpa::Filters::QueueAlgorithm< _TDataInterface >::
+QueueAlgorithm( bool double_buffer )
+  : Superclass( ),
+    m_CurrQueue( 0 ),
+    m_DoubleBuffer( double_buffer )
+{
+}
+
+// -------------------------------------------------------------------------
+template< class _TDataInterface >
+fpa::Filters::QueueAlgorithm< _TDataInterface >::
+~QueueAlgorithm( )
+{
+}
+
+// -------------------------------------------------------------------------
+template< class _TDataInterface >
+void fpa::Filters::QueueAlgorithm< _TDataInterface >::
+_QueueSwap( )
+{
+  if( this->m_DoubleBuffer )
+    this->m_CurrQueue = ( this->m_CurrQueue + 1 ) % 2;
+  else
+    this->m_CurrQueue = 0;
+}
+
+// -------------------------------------------------------------------------
+template< class _TDataInterface >
+void fpa::Filters::QueueAlgorithm< _TDataInterface >::
+_QueueClear( )
+{
+  this->m_Queues[ 0 ].clear( );
+  this->m_Queues[ 1 ].clear( );
+  this->m_CurrQueue = 0;
+}
+
+// -------------------------------------------------------------------------
+template< class _TDataInterface >
+typename fpa::Filters::QueueAlgorithm< _TDataInterface >::
+TNode fpa::Filters::QueueAlgorithm< _TDataInterface >::
+_QueuePop( )
+{
+  TNode n = this->m_Queues[ this->m_CurrQueue ].front( );
+  this->m_Queues[ this->m_CurrQueue ].pop_front( );
+  return( n );
+}
+
+// -------------------------------------------------------------------------
+template< class _TDataInterface >
+void fpa::Filters::QueueAlgorithm< _TDataInterface >::
+_QueuePush( const TNode& n )
+{
+  this->m_Queues[ this->m_CurrQueue ].push_back( n );
+}
+
+// -------------------------------------------------------------------------
+template< class _TDataInterface >
+unsigned long fpa::Filters::QueueAlgorithm< _TDataInterface >::
+_QueueSize( ) const
+{
+  return( this->m_Queues[ this->m_CurrQueue ].size( ) );
+}
+
+#endif // __fpa__Filters__QueueAlgorithm__hxx__
+// eof - $RCSfile$