forked from bartvdbraak/blender
159 lines
3.3 KiB
C++
159 lines
3.3 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_DoubleReader.h"
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#include "AUD_Buffer.h"
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#include <cstring>
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AUD_DoubleReader::AUD_DoubleReader(AUD_IReader* reader1,
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AUD_IReader* reader2) :
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m_reader1(reader1), m_reader2(reader2)
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{
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try
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{
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if(!reader1)
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AUD_THROW(AUD_ERROR_READER);
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if(!reader2)
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AUD_THROW(AUD_ERROR_READER);
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AUD_Specs s1, s2;
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s1 = reader1->getSpecs();
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s2 = reader2->getSpecs();
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if(memcmp(&s1, &s2, sizeof(AUD_Specs)) != 0)
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AUD_THROW(AUD_ERROR_READER);
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}
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catch(AUD_Exception e)
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{
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if(reader1)
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{
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delete reader1; AUD_DELETE("reader")
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}
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if(reader2)
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{
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delete reader2; AUD_DELETE("reader")
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}
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throw;
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}
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m_buffer = new AUD_Buffer(); AUD_NEW("buffer")
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m_finished1 = false;
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}
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AUD_DoubleReader::~AUD_DoubleReader()
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{
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delete m_reader1; AUD_DELETE("reader")
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delete m_reader2; AUD_DELETE("reader")
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delete m_buffer; AUD_DELETE("buffer")
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}
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bool AUD_DoubleReader::isSeekable()
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{
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return false;
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}
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void AUD_DoubleReader::seek(int position)
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{
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int length1 = m_reader1->getLength();
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if(position < 0)
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position = 0;
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if(position < length1)
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{
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m_reader1->seek(position);
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m_reader2->seek(0);
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m_finished1 = false;
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}
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else
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{
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m_reader2->seek(position-length1);
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m_finished1 = true;
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}
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}
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int AUD_DoubleReader::getLength()
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{
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int len1 = m_reader1->getLength();
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int len2 = m_reader2->getLength();
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if(len1 < 0 || len2 < 0)
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return -1;
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return len1 + len2;
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}
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int AUD_DoubleReader::getPosition()
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{
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return m_reader1->getPosition() + m_reader2->getPosition();
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}
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AUD_Specs AUD_DoubleReader::getSpecs()
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{
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return m_reader1->getSpecs();
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}
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AUD_ReaderType AUD_DoubleReader::getType()
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{
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if(m_reader1->getType() == AUD_TYPE_BUFFER &&
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m_reader2->getType() == AUD_TYPE_BUFFER)
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return AUD_TYPE_BUFFER;
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return AUD_TYPE_STREAM;
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}
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bool AUD_DoubleReader::notify(AUD_Message &message)
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{
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return m_reader1->notify(message) | m_reader2->notify(message);
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}
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void AUD_DoubleReader::read(int & length, sample_t* & buffer)
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{
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if(!m_finished1)
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{
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int len = length;
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m_reader1->read(len, buffer);
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if(len < length)
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{
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int samplesize = AUD_SAMPLE_SIZE(m_reader1->getSpecs());
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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(), buffer, len*samplesize);
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len = length - len;
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length -= len;
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m_reader2->read(len, buffer);
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memcpy(m_buffer->getBuffer() + length*samplesize,
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buffer, len*samplesize);
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length += len;
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buffer = m_buffer->getBuffer();
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m_finished1 = true;
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}
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}
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else
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{
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m_reader2->read(length, buffer);
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}
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}
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