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