forked from bartvdbraak/blender
82 lines
2.1 KiB
C++
82 lines
2.1 KiB
C++
/*
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* $Id$
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*
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* ***** BEGIN GPL LICENSE BLOCK *****
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*
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* Copyright 2009-2011 Jörg Hermann Müller
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*
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* This file is part of AudaSpace.
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*
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* Audaspace is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* AudaSpace is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Audaspace; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* ***** END GPL LICENSE BLOCK *****
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*/
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/** \file audaspace/intern/AUD_StreamBufferFactory.cpp
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* \ingroup audaspaceintern
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*/
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#include "AUD_StreamBufferFactory.h"
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#include "AUD_BufferReader.h"
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#include "AUD_Buffer.h"
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#include <cstring>
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AUD_StreamBufferFactory::AUD_StreamBufferFactory(AUD_IFactory* factory) :
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m_buffer(new AUD_Buffer())
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{
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AUD_IReader* reader = factory->createReader();
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m_specs = reader->getSpecs();
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int sample_size = AUD_SAMPLE_SIZE(m_specs);
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int length;
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int index = 0;
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sample_t* buffer;
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// get an approximated size if possible
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int size = reader->getLength();
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if(size <= 0)
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size = AUD_BUFFER_RESIZE_BYTES / sample_size;
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else
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size += m_specs.rate;
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// as long as we fill our buffer to the end
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while(index == m_buffer.get()->getSize() / sample_size)
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{
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// increase
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m_buffer.get()->resize(size*sample_size, true);
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// read more
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length = size-index;
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reader->read(length, buffer);
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memcpy(m_buffer.get()->getBuffer() + index * m_specs.channels,
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buffer,
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length * sample_size);
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size += AUD_BUFFER_RESIZE_BYTES / sample_size;
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index += length;
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}
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m_buffer.get()->resize(index * sample_size, true);
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delete reader;
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}
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AUD_IReader* AUD_StreamBufferFactory::createReader() const
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{
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return new AUD_BufferReader(m_buffer, m_specs);
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}
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