113 lines
2.5 KiB
C++
113 lines
2.5 KiB
C++
/*
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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/FX/AUD_DoubleReader.cpp
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* \ingroup audfx
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*/
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#include "AUD_DoubleReader.h"
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#include <cstring>
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AUD_DoubleReader::AUD_DoubleReader(boost::shared_ptr<AUD_IReader> reader1,
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boost::shared_ptr<AUD_IReader> reader2) :
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m_reader1(reader1), m_reader2(reader2), m_finished1(false)
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{
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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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}
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AUD_DoubleReader::~AUD_DoubleReader()
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{
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}
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bool AUD_DoubleReader::isSeekable() const
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{
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return m_reader1->isSeekable() && m_reader2->isSeekable();
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}
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void AUD_DoubleReader::seek(int position)
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{
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m_reader1->seek(position);
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int pos1 = m_reader1->getPosition();
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if((m_finished1 = (pos1 < position)))
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m_reader2->seek(position - pos1);
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else
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m_reader2->seek(0);
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}
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int AUD_DoubleReader::getLength() const
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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() const
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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() const
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{
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return m_finished1 ? m_reader1->getSpecs() : m_reader2->getSpecs();
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}
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void AUD_DoubleReader::read(int& length, bool& eos, sample_t* buffer)
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{
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eos = false;
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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, m_finished1, buffer);
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if(len < length)
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{
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AUD_Specs specs1, specs2;
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specs1 = m_reader1->getSpecs();
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specs2 = m_reader2->getSpecs();
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if(AUD_COMPARE_SPECS(specs1, specs2))
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{
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int len2 = length - len;
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m_reader2->read(len2, eos, buffer + specs1.channels * len);
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length = len + len2;
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}
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else
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length = len;
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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, eos, buffer);
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}
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}
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