Added abandoned KDE3 version of K3B

git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/applications/k3b@1084400 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 98 insertions, 0 deletions

diff --git a/libk3b/tools/k3bthroughputestimator.cpp b/libk3b/tools/k3bthroughputestimator.cpp
new file mode 100644
index 0000000..aa52478
--- /dev/null
+++ b/libk3b/tools/k3bthroughputestimator.cpp
@@ -0,0 +1,98 @@
+/* 
+ *
+ * $Id: k3bthroughputestimator.cpp 619556 2007-01-03 17:38:12Z trueg $
+ * Copyright (C) 2003 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 "k3bthroughputestimator.h"
+
+#include <qdatetime.h>
+#include <kdebug.h>
+
+
+class K3bThroughputEstimator::Private
+{
+public:
+  Private()
+    : started(false) {
+  }
+
+  QTime firstDataTime;
+  unsigned long firstData;
+  QTime lastDataTime;
+  unsigned long lastData;
+
+  int lastThroughput;
+
+  bool started;
+};
+
+
+K3bThroughputEstimator::K3bThroughputEstimator( QObject* parent, const char* name )
+  : QObject( parent, name )
+{
+  d = new Private();
+}
+
+
+K3bThroughputEstimator::~K3bThroughputEstimator()
+{
+  delete d;
+}
+
+
+int K3bThroughputEstimator::average() const
+{
+  int msecs = d->firstDataTime.msecsTo( d->lastDataTime );
+  if( msecs > 0 )
+    return (int)( 1000.0*(double)(d->lastData - d->firstData)/(double)msecs);
+  else
+    return 0;
+}
+
+
+void K3bThroughputEstimator::reset()
+{
+  d->started = false;
+}
+
+
+void K3bThroughputEstimator::dataWritten( unsigned long data )
+{
+  if( !d->started ) {
+    d->started = true;
+    d->firstData = d->lastData = data;
+    d->firstDataTime.start();
+    d->lastDataTime.start();
+    d->lastThroughput = 0;
+  }
+  else if( data > d->lastData ) {
+    unsigned long diff = data - d->lastData;
+    int msecs = d->lastDataTime.elapsed();
+
+    //if( msecs > 0 ) {
+    // down the update sequence a little bit
+    if( msecs > 500 ) {
+      d->lastData = data;
+      d->lastDataTime.start();
+      int t = (int)(1000.0*(double)diff/(double)msecs);
+      if( t != d->lastThroughput ) {
+          d->lastThroughput = t;
+          emit throughput( t );
+      }
+    }
+  }
+}
+
+
+#include "k3bthroughputestimator.moc"