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/***************************************************************************
copyright : (C) 2002 - 2008 by Scott Wheeler
email : wheeler@kde.org
***************************************************************************/
/***************************************************************************
* This library is free software; you can redistribute it and/or modify *
* it under the terms of the GNU Lesser General Public License version *
* 2.1 as published by the Free Software Foundation. *
* *
* This library 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 this library; if not, write to the Free Software *
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 *
* USA *
* *
* Alternatively, this file is available under the Mozilla Public *
* License Version 1.1. You may obtain a copy of the License at *
* http://www.mozilla.org/MPL/ *
***************************************************************************/
#include <iostream>
#include "id3v2synchdata.h"
using namespace TagLib;
using namespace ID3v2;
TagLib::uint SynchData::toUInt(const ByteVector &data)
{
uint sum = 0;
int last = data.size() > 4 ? 3 : data.size() - 1;
for(int i = 0; i <= last; i++)
sum |= (data[i] & 0x7f) << ((last - i) * 7);
return sum;
}
ByteVector SynchData::fromUInt(uint value)
{
ByteVector v(4, 0);
for(int i = 0; i < 4; i++)
v[i] = uchar(value >> ((3 - i) * 7) & 0x7f);
return v;
}
ByteVector SynchData::decode(const ByteVector &data)
{
ByteVector result = data;
ByteVector pattern(2, char(0));
pattern[0] = '\xFF';
pattern[1] = '\x00';
return result.replace(pattern, '\xFF');
}
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