1 files changed, 158 insertions, 0 deletions
diff --git a/intern/audaspace/FX/AUD_DoubleReader.cpp b/intern/audaspace/FX/AUD_DoubleReader.cpp
new file mode 100644
index 00000000000..181e394da98
--- /dev/null
+++ b/intern/audaspace/FX/AUD_DoubleReader.cpp
@@ -0,0 +1,158 @@
+/*
+ * $Id$
+ *
+ * ***** 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_DoubleReader.h"
+#include "AUD_Buffer.h"
+
+#include <cstring>
+
+AUD_DoubleReader::AUD_DoubleReader(AUD_IReader* reader1,
+								   AUD_IReader* reader2) :
+		m_reader1(reader1), m_reader2(reader2)
+{
+	try
+	{
+		if(!reader1)
+			AUD_THROW(AUD_ERROR_READER);
+
+		if(!reader2)
+			AUD_THROW(AUD_ERROR_READER);
+
+		AUD_Specs s1, s2;
+		s1 = reader1->getSpecs();
+		s2 = reader2->getSpecs();
+		if(memcmp(&s1, &s2, sizeof(AUD_Specs)) != 0)
+			AUD_THROW(AUD_ERROR_READER);
+	}
+
+	catch(AUD_Exception e)
+	{
+		if(reader1)
+		{
+			delete reader1; AUD_DELETE("reader")
+		}
+		if(reader2)
+		{
+			delete reader2; AUD_DELETE("reader")
+		}
+
+		throw;
+	}
+
+	m_buffer = new AUD_Buffer(); AUD_NEW("buffer")
+	m_finished1 = false;
+}
+
+AUD_DoubleReader::~AUD_DoubleReader()
+{
+	delete m_reader1; AUD_DELETE("reader")
+	delete m_reader2; AUD_DELETE("reader")
+	delete m_buffer; AUD_DELETE("buffer")
+}
+
+bool AUD_DoubleReader::isSeekable()
+{
+	return false;
+}
+
+void AUD_DoubleReader::seek(int position)
+{
+	int length1 = m_reader1->getLength();
+
+	if(position < 0)
+		position = 0;
+
+	if(position < length1)
+	{
+		m_reader1->seek(position);
+		m_reader2->seek(0);
+		m_finished1 = false;
+	}
+	else
+	{
+		m_reader2->seek(position-length1);
+		m_finished1 = true;
+	}
+}
+
+int AUD_DoubleReader::getLength()
+{
+	int len1 = m_reader1->getLength();
+	int len2 = m_reader2->getLength();
+	if(len1 < 0 || len2 < 0)
+		return -1;
+	return len1 + len2;
+}
+
+int AUD_DoubleReader::getPosition()
+{
+	return m_reader1->getPosition() + m_reader2->getPosition();
+}
+
+AUD_Specs AUD_DoubleReader::getSpecs()
+{
+	return m_reader1->getSpecs();
+}
+
+AUD_ReaderType AUD_DoubleReader::getType()
+{
+	if(m_reader1->getType() == AUD_TYPE_BUFFER &&
+	   m_reader2->getType() == AUD_TYPE_BUFFER)
+		return AUD_TYPE_BUFFER;
+	return AUD_TYPE_STREAM;
+}
+
+bool AUD_DoubleReader::notify(AUD_Message &message)
+{
+	return m_reader1->notify(message) | m_reader2->notify(message);
+}
+
+void AUD_DoubleReader::read(int & length, sample_t* & buffer)
+{
+	if(!m_finished1)
+	{
+		int len = length;
+		m_reader1->read(len, buffer);
+		if(len < length)
+		{
+			int samplesize = AUD_SAMPLE_SIZE(m_reader1->getSpecs());
+			if(m_buffer->getSize() < length * samplesize)
+				m_buffer->resize(length * samplesize);
+			memcpy(m_buffer->getBuffer(), buffer, len*samplesize);
+			len = length - len;
+			length -= len;
+			m_reader2->read(len, buffer);
+			memcpy(m_buffer->getBuffer() + length*samplesize,
+				   buffer, len*samplesize);
+			length += len;
+			buffer = m_buffer->getBuffer();
+			m_finished1 = true;
+		}
+	}
+	else
+	{
+		m_reader2->read(length, buffer);
+	}
+}