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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_StreamBufferFactory.h"
#include "AUD_BufferReader.h"
#include "AUD_Buffer.h"
#include <cstring>
AUD_StreamBufferFactory::AUD_StreamBufferFactory(AUD_IFactory* factory) :
m_buffer(new AUD_Buffer())
{
AUD_IReader* reader = factory->createReader();
m_specs = reader->getSpecs();
int sample_size = AUD_SAMPLE_SIZE(m_specs);
int length;
int index = 0;
sample_t* buffer;
// get an approximated size if possible
int size = reader->getLength();
if(size <= 0)
size = AUD_BUFFER_RESIZE_BYTES / sample_size;
else
size += m_specs.rate;
// as long as we fill our buffer to the end
while(index == m_buffer.get()->getSize() / sample_size)
{
// increase
m_buffer.get()->resize(size*sample_size, true);
// read more
length = size-index;
reader->read(length, buffer);
memcpy(m_buffer.get()->getBuffer() + index * m_specs.channels,
buffer,
length * sample_size);
size += AUD_BUFFER_RESIZE_BYTES / sample_size;
index += length;
}
m_buffer.get()->resize(index * sample_size, true);
delete reader;
}
AUD_IReader* AUD_StreamBufferFactory::createReader() const
{
return new AUD_BufferReader(m_buffer, m_specs);
}
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