1 files changed, 210 insertions, 0 deletions
diff --git a/libk3b/projects/audiocd/k3baudiodatasource.cpp b/libk3b/projects/audiocd/k3baudiodatasource.cpp
new file mode 100644
index 0000000..0f705f4
--- /dev/null
+++ b/libk3b/projects/audiocd/k3baudiodatasource.cpp
@@ -0,0 +1,210 @@
+/* 
+ *
+ * $Id: k3baudiodatasource.cpp 619556 2007-01-03 17:38:12Z trueg $
+ * Copyright (C) 2004 Sebastian Trueg <trueg@k3b.org>
+ *
+ * This file is part of the K3b project.
+ * Copyright (C) 1998-2007 Sebastian Trueg <trueg@k3b.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ * See the file "COPYING" for the exact licensing terms.
+ */
+
+#include "k3baudiodatasource.h"
+#include "k3baudiotrack.h"
+#include "k3baudiodoc.h"
+
+
+K3bAudioDataSource::K3bAudioDataSource()
+  : m_track(0),
+    m_prev(0),
+    m_next(0)
+{
+}
+
+
+K3bAudioDataSource::K3bAudioDataSource( const K3bAudioDataSource& source )
+  : m_track( 0 ),
+    m_prev( 0 ),
+    m_next( 0 ),
+    m_startOffset( source.m_startOffset ),
+    m_endOffset( source.m_endOffset )
+{
+}
+
+
+K3bAudioDataSource::~K3bAudioDataSource()
+{
+  take();
+}
+
+
+K3bAudioDoc* K3bAudioDataSource::doc() const
+{
+  if( m_track )
+    return m_track->doc();
+  else
+    return 0;
+}
+
+
+K3bAudioDataSource* K3bAudioDataSource::take()
+{
+  // if we do not have a track we are not in any list
+  if( m_track ) {
+    if( !m_prev )
+      m_track->setFirstSource( m_next );
+    
+    if( m_prev )
+      m_prev->m_next = m_next;
+    if( m_next )
+      m_next->m_prev = m_prev;
+    
+    m_prev = m_next = 0;
+    
+    emitChange();
+    m_track = 0;
+  }
+
+  return this;
+}
+
+
+void K3bAudioDataSource::moveAfter( K3bAudioDataSource* source )
+{
+  // cannot create a list outside a track!
+  if( !source->track() )
+    return;
+
+  if( source == this )
+    return;
+
+  // remove this from the list
+  take();
+  
+  K3bAudioDataSource* oldNext = source->m_next;
+    
+  // set track as prev
+  source->m_next = this;
+  m_prev = source;
+
+  // set oldNext as next
+  if( oldNext )
+    oldNext->m_prev = this;
+  m_next = oldNext;
+
+  m_track = source->track();
+  emitChange();
+}
+
+
+void K3bAudioDataSource::moveAhead( K3bAudioDataSource* source )
+{
+  // cannot create a list outside a track!
+  if( !source->track() )
+    return;
+
+  if( source == this )
+    return;
+
+  // remove this from the list
+  take();
+
+  K3bAudioDataSource* oldPrev = source->m_prev;
+
+  // set track as next
+  m_next = source;
+  source->m_prev = this;
+
+  // set oldPrev as prev
+  m_prev = oldPrev;
+  if( oldPrev )
+    oldPrev->m_next = this;
+
+  m_track = source->track();
+
+  if( !m_prev )
+    m_track->setFirstSource( this );
+
+  emitChange();
+}
+
+
+void K3bAudioDataSource::emitChange()
+{
+  if( m_track )
+    m_track->sourceChanged( this );
+}
+
+
+K3bAudioDataSource* K3bAudioDataSource::split( const K3b::Msf& pos )
+{
+  if( pos < length() ) {
+    K3bAudioDataSource* s = copy();
+    s->setStartOffset( startOffset() + pos );
+    s->setEndOffset( endOffset() );
+    setEndOffset( startOffset() + pos );
+    s->moveAfter( this );
+    emitChange();
+    return s;
+  }
+  else
+    return 0;
+}
+
+
+K3b::Msf K3bAudioDataSource::lastSector() const
+{
+  if( endOffset() > 0 )
+    return endOffset()-1;
+  else
+    return originalLength()-1;
+}
+
+
+K3b::Msf K3bAudioDataSource::length() const
+{
+  if( originalLength() == 0 )
+    return 0;
+  else if( lastSector() < m_startOffset )
+    return 1;
+  else
+    return lastSector() - m_startOffset + 1;
+}
+
+
+void K3bAudioDataSource::setStartOffset( const K3b::Msf& msf )
+{
+  m_startOffset = msf;
+  fixupOffsets();
+  emitChange();
+}
+
+
+void K3bAudioDataSource::setEndOffset( const K3b::Msf& msf )
+{
+  m_endOffset = msf;
+  fixupOffsets();
+  emitChange();
+}
+
+
+void K3bAudioDataSource::fixupOffsets()
+{
+  // no length available yet
+  if( originalLength() == 0 )
+    return;
+
+  if( startOffset() >= originalLength() ) {
+    setStartOffset( 0 );
+  }
+  if( endOffset() > originalLength() ) {
+    setEndOffset( 0 ); // whole source
+  }
+  if( endOffset() > 0 && endOffset() <= startOffset() ) {
+    setEndOffset( startOffset() );
+  }
+}