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// The authors have released ID3Lib as Public Domain (PD) and claim no copyright,
// patent or other intellectual property protection in this work. This means that
// it may be modified, redistributed and used in commercial and non-commercial
// software and hardware without restrictions. ID3Lib is distributed on an "AS IS"
// basis, WITHOUT WARRANTY OF ANY KIND, either express or implied.
//
// The ID3Lib authors encourage improvements and optimisations to be sent to the
// ID3Lib coordinator, currently Dirk Mahoney (dirk@id3.org). Approved
// submissions may be altered, and will be included and released under these terms.
//
// Mon Nov 23 18:34:01 1998
#include "id3_int28.h"
int28::int28 ( luint val )
{
set ( val );
}
int28::int28 ( uchar *val )
{
for ( int i = 0; i < sizeof ( luint ); i++ )
value[ i ] = val[ i ];
}
void int28::set ( luint val )
{
for ( int i = 0; i < sizeof ( luint ); i++ )
value[ sizeof ( luint ) - 1 - i ] = (uchar) ( ( val >> ( i * 7 ) ) & 127 ) & 0xFF;
return;
}
luint int28::get ( void )
{
luint newSize = 0L;
uchar bytes [ 4 ];
bytes[ 3 ] = value[ 3 ] | ( ( value[ 2 ] & 1 ) << 7 );
bytes[ 2 ] = ( ( value[ 2 ] >> 1 ) & 63 ) | ( ( value[ 1 ] & 3 ) << 6 );
bytes[ 1 ] = ( ( value[ 1 ] >> 2 ) & 31 ) | ( ( value[ 0 ] & 7 ) << 5 );
bytes[ 0 ] = ( ( value[ 0 ] >> 3 ) & 15 );
newSize = bytes[ 3 ] | ( (luint) bytes[ 2 ] << 8 ) | ( (luint) bytes[ 1 ] << 16 ) | ( (luint) bytes[ 0 ] << 24 );
return newSize;
}
uchar int28::operator[] ( luint posn )
{
return value[ posn ];
}
ostream& operator<< ( ostream& out, int28& val )
{
out.write ( val.value, sizeof ( val ) );
return out;
}
istream& operator>> ( istream& in, int28& val )
{
uchar temp [ sizeof ( luint ) ];
in.read ( temp, sizeof ( temp ) );
val = temp;
return in;
}
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