Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.

BUG:215923


git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdelibs@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 80 insertions, 0 deletions

diff --git a/arts/kde/kdatarequest_impl.cpp b/arts/kde/kdatarequest_impl.cpp
new file mode 100644
index 000000000..ce8f30f9b
--- /dev/null
+++ b/arts/kde/kdatarequest_impl.cpp
@@ -0,0 +1,80 @@
+	/*
+
+	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);