forked from bartvdbraak/blender
044887b5a4
- Created Handle classes - Changed Reference counting completely - Fixing some streaming bugs - Completely disabled OpenAL Buffered Factories (they were unused anyway)
93 lines
2.1 KiB
C++
93 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_BufferReader.cpp
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* \ingroup audaspaceintern
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*/
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#include "AUD_BufferReader.h"
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#include "AUD_Buffer.h"
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#include "AUD_Space.h"
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#include <cstring>
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AUD_BufferReader::AUD_BufferReader(AUD_Reference<AUD_Buffer> buffer,
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AUD_Specs specs) :
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m_position(0), m_buffer(buffer), m_specs(specs)
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{
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}
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bool AUD_BufferReader::isSeekable() const
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{
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return true;
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}
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void AUD_BufferReader::seek(int position)
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{
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m_position = position;
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}
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int AUD_BufferReader::getLength() const
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{
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return m_buffer->getSize() / AUD_SAMPLE_SIZE(m_specs);
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}
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int AUD_BufferReader::getPosition() const
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{
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return m_position;
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}
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AUD_Specs AUD_BufferReader::getSpecs() const
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{
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return m_specs;
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}
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void AUD_BufferReader::read(int& length, bool& eos, sample_t* buffer)
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{
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eos = false;
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int sample_size = AUD_SAMPLE_SIZE(m_specs);
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sample_t* buf = m_buffer->getBuffer() + m_position * m_specs.channels;
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// in case the end of the buffer is reached
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if(m_buffer->getSize() < (m_position + length) * sample_size)
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{
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length = m_buffer->getSize() / sample_size - m_position;
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eos = true;
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}
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if(length < 0)
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{
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length = 0;
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return;
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}
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m_position += length;
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memcpy(buffer, buf, length * sample_size);
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}
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