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/*
* $Id$
*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* Copyright 2009-2011 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 General Public License as published by
* the Free Software Foundation; either version 2 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Audaspace; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* ***** END GPL LICENSE BLOCK *****
*/
/** \file audaspace/intern/AUD_DefaultMixer.cpp
* \ingroup audaspaceintern
*/
#include "AUD_DefaultMixer.h"
#ifdef WITH_SAMPLERATE
#include "AUD_SRCResampleReader.h"
#else
#include "AUD_LinearResampleReader.h"
#endif
#include "AUD_ChannelMapperReader.h"
#include "AUD_ChannelMapperFactory.h"
#include <cstring>
AUD_DefaultMixer::AUD_DefaultMixer(AUD_DeviceSpecs specs) :
AUD_Mixer(specs)
{
}
AUD_IReader* AUD_DefaultMixer::prepare(AUD_IReader* reader)
{
// hacky for now, until a better channel mapper reader is available
AUD_ChannelMapperFactory cmf(NULL, m_specs);
AUD_Specs specs = reader->getSpecs();
// if channel count is lower in output, rechannel before resampling
if(specs.channels < m_specs.channels)
{
reader = new AUD_ChannelMapperReader(reader,
cmf.getMapping(specs.channels));
specs.channels = m_specs.channels;
}
// resample
if(specs.rate != m_specs.rate)
#ifdef WITH_SAMPLERATE
reader = new AUD_SRCResampleReader(reader, m_specs.specs);
#else
reader = new AUD_LinearResampleReader(reader, m_specs.specs);
#endif
// rechannel
if(specs.channels != m_specs.channels)
reader = new AUD_ChannelMapperReader(reader,
cmf.getMapping(specs.channels));
return reader;
}
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