1 files changed, 107 insertions, 0 deletions
diff --git a/intern/audaspace/FX/AUD_LoopReader.cpp b/intern/audaspace/FX/AUD_LoopReader.cpp
new file mode 100644
index 00000000000..9e270321013
--- /dev/null
+++ b/intern/audaspace/FX/AUD_LoopReader.cpp
@@ -0,0 +1,107 @@
+/*
+ * $Id$
+ *
+ * ***** BEGIN LGPL LICENSE BLOCK *****
+ *
+ * Copyright 2009 Jörg Hermann Müller
+ *
+ * This file is part of AudaSpace.
+ *
+ * AudaSpace 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 3 of the License, or
+ * (at your option) any later version.
+ *
+ * AudaSpace 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 AudaSpace.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * ***** END LGPL LICENSE BLOCK *****
+ */
+
+#include "AUD_LoopReader.h"
+#include "AUD_Buffer.h"
+
+#include <cstring>
+#include <stdio.h>
+
+AUD_LoopReader::AUD_LoopReader(AUD_IReader* reader, int loop) :
+		AUD_EffectReader(reader), m_loop(loop)
+{
+	m_buffer = new AUD_Buffer(); AUD_NEW("buffer")
+}
+
+AUD_LoopReader::~AUD_LoopReader()
+{
+	delete m_buffer; AUD_DELETE("buffer")
+}
+
+AUD_ReaderType AUD_LoopReader::getType()
+{
+	if(m_loop < 0)
+		return AUD_TYPE_STREAM;
+	return m_reader->getType();
+}
+
+bool AUD_LoopReader::notify(AUD_Message &message)
+{
+	if(message.type == AUD_MSG_LOOP)
+	{
+		m_loop = message.loopcount;
+
+		m_reader->notify(message);
+
+		return true;
+	}
+	return m_reader->notify(message);
+}
+
+void AUD_LoopReader::read(int & length, sample_t* & buffer)
+{
+	int samplesize = AUD_SAMPLE_SIZE(m_reader->getSpecs());
+
+	int len = length;
+
+	m_reader->read(len, buffer);
+
+	if(len < length && m_loop != 0)
+	{
+		int pos = 0;
+
+		if(m_buffer->getSize() < length*samplesize)
+			m_buffer->resize(length*samplesize);
+
+		memcpy(m_buffer->getBuffer() + pos * samplesize,
+			   buffer, len * samplesize);
+
+		pos += len;
+
+		while(pos < length && m_loop != 0)
+		{
+			if(m_loop > 0)
+				m_loop--;
+
+			m_reader->seek(0);
+
+			len = length - pos;
+			m_reader->read(len, buffer);
+			// prevent endless loop
+			if(!len)
+				break;
+
+			memcpy(m_buffer->getBuffer() + pos * samplesize,
+				   buffer, len * samplesize);
+
+			pos += len;
+		}
+
+		length = pos;
+		buffer = m_buffer->getBuffer();
+	}
+	else
+		length = len;
+}