fresh audaspace from trunk

2010-09-04 18:53:48 +00:00
parent 2c7e384f1a
commit 0a6e7fbfc6
161 changed files with 21392 additions and 0 deletions
--- a/intern/audaspace/SRC/AUD_SRCResampleReader.cpp
+++ b/intern/audaspace/SRC/AUD_SRCResampleReader.cpp
@@ -0,0 +1,114 @@
+/*
+ * $Id$
+ *
+ * ***** 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 <cmath>
+#include <cstring>
+#include <cstdio>
+
+static long src_callback(void *cb_data, float **data)
+{
+	return ((AUD_SRCResampleReader*)cb_data)->doCallback(data);
+}
+
+static const char* state_error = "AUD_SRCResampleReader: SRC State couldn't be "
+								 "created.";
+
+AUD_SRCResampleReader::AUD_SRCResampleReader(AUD_IReader* reader,
+											 AUD_Specs specs) :
+		AUD_EffectReader(reader),
+		m_sspecs(reader->getSpecs()),
+		m_factor(double(specs.rate) / double(m_sspecs.rate)),
+		m_tspecs(specs),
+		m_position(0)
+{
+	m_tspecs.channels = m_sspecs.channels;
+
+	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));
+		AUD_THROW(AUD_ERROR_SRC, state_error);
+	}
+}
+
+AUD_SRCResampleReader::~AUD_SRCResampleReader()
+{
+	src_delete(m_src);
+}
+
+long AUD_SRCResampleReader::doCallback(float** data)
+{
+	int length = m_buffer.getSize() / AUD_SAMPLE_SIZE(m_tspecs);
+	sample_t* buffer;
+
+	m_reader->read(length, buffer);
+
+	*data = buffer;
+	return length;
+}
+
+void AUD_SRCResampleReader::seek(int position)
+{
+	m_reader->seek(position / m_factor);
+	src_reset(m_src);
+	m_position = position;
+}
+
+int AUD_SRCResampleReader::getLength() const
+{
+	return m_reader->getLength() * m_factor;
+}
+
+int AUD_SRCResampleReader::getPosition() const
+{
+	return m_position;
+}
+
+AUD_Specs AUD_SRCResampleReader::getSpecs() const
+{
+	return m_tspecs;
+}
+
+void AUD_SRCResampleReader::read(int & length, sample_t* & buffer)
+{
+	int size = length * AUD_SAMPLE_SIZE(m_tspecs);
+
+	if(m_buffer.getSize() < size)
+		m_buffer.resize(size);
+
+	buffer = m_buffer.getBuffer();
+
+	length = src_callback_read(m_src, m_factor, length, buffer);
+
+	m_position += length;
+}