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/*
* $Id$
*
* ***** 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_ChannelMapperFactory.h"
#include "AUD_ChannelMapperReader.h"
#include <cstring>
AUD_ChannelMapperFactory::AUD_ChannelMapperFactory(AUD_IFactory* factory,
AUD_DeviceSpecs specs) :
AUD_MixerFactory(factory, specs)
{
memset(m_mapping, 0, sizeof(m_mapping));
}
AUD_ChannelMapperFactory::~AUD_ChannelMapperFactory()
{
for(int i = 1; i < 10; i++)
deleteMapping(i);
}
float** AUD_ChannelMapperFactory::getMapping(int ic)
{
ic--;
if(ic > 8 || ic < 0)
return 0;
if(m_mapping[ic])
{
int channels = -1;
while(m_mapping[ic][++channels] != 0);
if(channels != m_specs.channels)
deleteMapping(ic+1);
}
if(!m_mapping[ic])
{
int channels = m_specs.channels;
m_mapping[ic] = new float*[channels+1];
m_mapping[ic][channels] = 0;
for(int i = 0; i < channels; i++)
{
m_mapping[ic][i] = new float[ic+1];
for(int j = 0; j <= ic; j++)
m_mapping[ic][i][j] = ((i == j) || (channels == 1) ||
(ic == 0)) ? 1.0f : 0.0f;
}
}
return m_mapping[ic];
}
void AUD_ChannelMapperFactory::deleteMapping(int ic)
{
ic--;
if(ic > 8 || ic < 0)
return;
if(m_mapping[ic])
{
for(int i = 0; 1; i++)
{
if(m_mapping[ic][i] != 0)
{
delete[] m_mapping[ic][i];
}
else
break;
}
delete[] m_mapping[ic];
m_mapping[ic] = 0;
}
}
AUD_IReader* AUD_ChannelMapperFactory::createReader() const
{
AUD_IReader* reader = getReader();
int ic = reader->getSpecs().channels;
return new AUD_ChannelMapperReader(reader,
const_cast<AUD_ChannelMapperFactory*>(this)->getMapping(ic));
}
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