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diff --git a/arts/kde/kdatarequest_impl.cpp b/arts/kde/kdatarequest_impl.cpp
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+ /*
+
+ Copyright (C) 2002 Nikolas Zimmermann <wildfox@kde.org>
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public
+ License as published by the Free Software Foundation; either
+ version 2 of the License, or (at your option) any later version.
+
+ 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
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public License
+ along with this library; see the file COPYING.LIB. If not, write to
+ the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, USA.
+
+ */
+
+#include <kdebug.h>
+#include "flowsystem.h"
+#include "convert.h"
+#include "kdatarequest_impl.moc"
+
+using namespace Arts;
+
+KDataRequest_impl::KDataRequest_impl()
+{
+ m_lastBlockSize = 0;
+ m_outBlock = 0;
+}
+
+KDataRequest_impl::~KDataRequest_impl()
+{
+ delete []m_outBlock;
+}
+
+void KDataRequest_impl::streamInit()
+{
+}
+
+void KDataRequest_impl::streamEnd()
+{
+}
+
+void KDataRequest_impl::calculateBlock(unsigned long samples)
+{
+ long blockSize = samples * 4;
+
+ if(m_lastBlockSize != blockSize)
+ {
+ delete []m_outBlock;
+ emit newBlockSize(blockSize);
+
+ m_outBlock = new unsigned char[blockSize]; // 2 channels, 16 bit
+
+ emit newBlockPointer((long) m_outBlock);
+
+ m_lastBlockSize = blockSize;
+ }
+
+ convert_stereo_2float_i16le(samples, left, right, m_outBlock);
+ emit newData();
+}
+
+/*
+ * this is the most tricky part here - since we will run in a context
+ * where no audio hardware will play the "give me more data role",
+ * we'll have to request things ourselves (requireFlow() tells the
+ * flowsystem that more signal flow should happen, so that
+ * calculateBlock will get called
+ */
+void KDataRequest_impl::goOn()
+{
+ _node()->requireFlow();
+}
+
+REGISTER_IMPLEMENTATION(KDataRequest_impl);