src/3rdparty/phonon/gstreamer/streamreader.cpp
changeset 0 1918ee327afb
child 3 41300fa6a67c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/3rdparty/phonon/gstreamer/streamreader.cpp	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,53 @@
+/*  This file is part of the KDE project.
+
+Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+
+This library is free software: you can redistribute it and/or modify
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation, either version 2.1 or 3 of the License.
+
+This library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "streamreader.h"
+#include <QtCore/QMutex>
+#include <phonon/streaminterface.h>
+
+QT_BEGIN_NAMESPACE
+
+namespace Phonon
+{
+namespace Gstreamer
+{
+
+bool StreamReader::read(quint64 pos, int length, char * buffer)
+{
+     if (currentPos() - currentBufferSize() != pos) {
+         if (!streamSeekable())
+             return false;
+         setCurrentPos(pos);
+     }
+
+    while (currentBufferSize() < length) {
+        int oldSize = currentBufferSize();
+        needData();
+        if (oldSize == currentBufferSize())
+            return false; // We didn't get any data
+    }
+
+    qMemCopy(buffer, m_buffer.data(), length);
+    //truncate the buffer
+    m_buffer = m_buffer.mid(pos);    
+    return true;
+}
+
+}
+}
+
+QT_END_NAMESPACE