forked from bartvdbraak/blender
108 lines
2.2 KiB
C++
108 lines
2.2 KiB
C++
/*
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* $Id$
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*
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* ***** BEGIN LGPL LICENSE BLOCK *****
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*
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* Copyright 2009 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 Lesser General Public License as published by
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* the Free Software Foundation, either version 3 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 Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with AudaSpace. If not, see <http://www.gnu.org/licenses/>.
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*
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* ***** END LGPL LICENSE BLOCK *****
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*/
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#include "AUD_LoopReader.h"
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#include "AUD_Buffer.h"
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#include <cstring>
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#include <stdio.h>
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AUD_LoopReader::AUD_LoopReader(AUD_IReader* reader, int loop) :
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AUD_EffectReader(reader), m_loop(loop)
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{
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m_buffer = new AUD_Buffer(); AUD_NEW("buffer")
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}
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AUD_LoopReader::~AUD_LoopReader()
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{
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delete m_buffer; AUD_DELETE("buffer")
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}
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AUD_ReaderType AUD_LoopReader::getType()
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{
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if(m_loop < 0)
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return AUD_TYPE_STREAM;
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return m_reader->getType();
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}
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bool AUD_LoopReader::notify(AUD_Message &message)
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{
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if(message.type == AUD_MSG_LOOP)
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{
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m_loop = message.loopcount;
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m_reader->notify(message);
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return true;
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}
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return m_reader->notify(message);
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}
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void AUD_LoopReader::read(int & length, sample_t* & buffer)
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{
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int samplesize = AUD_SAMPLE_SIZE(m_reader->getSpecs());
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int len = length;
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m_reader->read(len, buffer);
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if(len < length && m_loop != 0)
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{
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int pos = 0;
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if(m_buffer->getSize() < length*samplesize)
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m_buffer->resize(length*samplesize);
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memcpy(m_buffer->getBuffer() + pos * samplesize,
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buffer, len * samplesize);
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pos += len;
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while(pos < length && m_loop != 0)
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{
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if(m_loop > 0)
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m_loop--;
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m_reader->seek(0);
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len = length - pos;
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m_reader->read(len, buffer);
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// prevent endless loop
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if(!len)
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break;
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memcpy(m_buffer->getBuffer() + pos * samplesize,
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buffer, len * samplesize);
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pos += len;
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}
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length = pos;
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buffer = m_buffer->getBuffer();
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}
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else
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length = len;
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}
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