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/*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* Copyright 2009-2011 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 General Public License as published by
* the Free Software Foundation; either version 2 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Audaspace; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* ***** END GPL LICENSE BLOCK *****
*/
/** \file audaspace/FX/AUD_DoubleReader.cpp
* \ingroup audfx
*/
#include "AUD_DoubleReader.h"
#include <cstring>
AUD_DoubleReader::AUD_DoubleReader(boost::shared_ptr<AUD_IReader> reader1,
boost::shared_ptr<AUD_IReader> reader2) :
m_reader1(reader1), m_reader2(reader2), m_finished1(false)
{
AUD_Specs s1, s2;
s1 = reader1->getSpecs();
s2 = reader2->getSpecs();
}
AUD_DoubleReader::~AUD_DoubleReader()
{
}
bool AUD_DoubleReader::isSeekable() const
{
return m_reader1->isSeekable() && m_reader2->isSeekable();
}
void AUD_DoubleReader::seek(int position)
{
m_reader1->seek(position);
int pos1 = m_reader1->getPosition();
if((m_finished1 = (pos1 < position)))
m_reader2->seek(position - pos1);
else
m_reader2->seek(0);
}
int AUD_DoubleReader::getLength() const
{
int len1 = m_reader1->getLength();
int len2 = m_reader2->getLength();
if(len1 < 0 || len2 < 0)
return -1;
return len1 + len2;
}
int AUD_DoubleReader::getPosition() const
{
return m_reader1->getPosition() + m_reader2->getPosition();
}
AUD_Specs AUD_DoubleReader::getSpecs() const
{
return m_finished1 ? m_reader1->getSpecs() : m_reader2->getSpecs();
}
void AUD_DoubleReader::read(int& length, bool& eos, sample_t* buffer)
{
eos = false;
if(!m_finished1)
{
int len = length;
m_reader1->read(len, m_finished1, buffer);
if(len < length)
{
AUD_Specs specs1, specs2;
specs1 = m_reader1->getSpecs();
specs2 = m_reader2->getSpecs();
if(AUD_COMPARE_SPECS(specs1, specs2))
{
int len2 = length - len;
m_reader2->read(len2, eos, buffer + specs1.channels * len);
length = len + len2;
}
else
length = len;
}
}
else
{
m_reader2->read(length, eos, buffer);
}
}
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