1 files changed, 119 insertions, 0 deletions
diff --git a/intern/audaspace/SRC/AUD_SRCResampleReader.cpp b/intern/audaspace/SRC/AUD_SRCResampleReader.cpp
new file mode 100644
index 00000000000..f7564d3c010
--- /dev/null
+++ b/intern/audaspace/SRC/AUD_SRCResampleReader.cpp
@@ -0,0 +1,119 @@
+/*
+ * $Id$
+ *
+ * ***** 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_SRCResampleReader.h"
+#include "AUD_Buffer.h"
+
+#include <math.h>
+#include <cstring>
+#include <stdio.h>
+
+static long src_callback(void *cb_data, float **data)
+{
+	return ((AUD_SRCResampleReader*)cb_data)->doCallback(data);
+}
+
+AUD_SRCResampleReader::AUD_SRCResampleReader(AUD_IReader* reader,
+											 AUD_Specs specs) :
+		AUD_EffectReader(reader)
+{
+	m_sspecs = reader->getSpecs();
+
+	if(m_sspecs.format != AUD_FORMAT_FLOAT32)
+	{
+		delete m_reader; AUD_DELETE("reader")
+		AUD_THROW(AUD_ERROR_READER);
+	}
+
+	m_tspecs = specs;
+	m_tspecs.channels = m_sspecs.channels;
+	m_tspecs.format = m_sspecs.format;
+	m_factor = (double)m_tspecs.rate / (double)m_sspecs.rate;
+
+	int error;
+	m_src = src_callback_new(src_callback,
+							 SRC_SINC_MEDIUM_QUALITY,
+							 m_sspecs.channels,
+							 &error,
+							 this);
+
+	if(!m_src)
+	{
+		// XXX printf("%s\n", src_strerror(error));
+		delete m_reader; AUD_DELETE("reader")
+		AUD_THROW(AUD_ERROR_READER);
+	}
+
+	m_buffer = new AUD_Buffer(); AUD_NEW("buffer")
+}
+
+AUD_SRCResampleReader::~AUD_SRCResampleReader()
+{
+	delete m_buffer; AUD_DELETE("buffer")
+
+	src_delete(m_src);
+}
+
+long AUD_SRCResampleReader::doCallback(float** data)
+{
+	int length = m_buffer->getSize() / 4 / m_tspecs.channels;
+	sample_t* buffer;
+
+	m_reader->read(length, buffer);
+
+	*data = (float*)buffer;
+	return length;
+}
+
+void AUD_SRCResampleReader::seek(int position)
+{
+	m_reader->seek(position / m_factor);
+	src_reset(m_src);
+}
+
+int AUD_SRCResampleReader::getLength()
+{
+	return m_reader->getLength() * m_factor;
+}
+
+int AUD_SRCResampleReader::getPosition()
+{
+	return m_reader->getPosition() * m_factor;
+}
+
+AUD_Specs AUD_SRCResampleReader::getSpecs()
+{
+	return m_tspecs;
+}
+
+void AUD_SRCResampleReader::read(int & length, sample_t* & buffer)
+{
+	if(m_buffer->getSize() < length * m_tspecs.channels * 4)
+		m_buffer->resize(length * m_tspecs.channels * 4);
+
+	buffer = m_buffer->getBuffer();
+
+	length = src_callback_read(m_src, m_factor, length, (float*)buffer);
+}