63 lines
1.5 KiB
C++
63 lines
1.5 KiB
C++
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// The authors have released ID3Lib as Public Domain (PD) and claim no copyright,
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// patent or other intellectual property protection in this work. This means that
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// it may be modified, redistributed and used in commercial and non-commercial
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// software and hardware without restrictions. ID3Lib is distributed on an "AS IS"
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// basis, WITHOUT WARRANTY OF ANY KIND, either express or implied.
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// Mon Nov 23 18:34:01 1998
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#include "id3_int28.h"
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#include <bfc/platform/types.h>
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int28::int28(uint32_t val)
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{
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set ( val );
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}
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int28::int28(const uchar *val)
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{
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for ( int i = 0; i < sizeof ( uint32_t ); i++ )
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value[ i ] = val[ i ];
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}
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void int28::set(uint32_t val)
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{
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for ( int i = 0; i < sizeof ( uint32_t ); i++ )
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value[ sizeof ( uint32_t ) - 1 - i ] = (uint8_t) ( ( val >> ( i * 7 ) ) & 127 ) & 0xFF;
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return;
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}
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int28 &int28::setFromFile(uint32_t val)
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{
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for ( int i = 0; i < sizeof ( uint32_t ); i++ )
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value[sizeof(uint32_t) - 1 - i] = (uint8_t) (val >>(i*8)) & 0xFF;
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return *this;
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}
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luint int28::get ( void )
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{
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luint newSize = 0L;
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uchar bytes [ 4 ];
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bytes[ 3 ] = value[ 3 ] | ( ( value[ 2 ] & 1 ) << 7 );
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bytes[ 2 ] = ( ( value[ 2 ] >> 1 ) & 63 ) | ( ( value[ 1 ] & 3 ) << 6 );
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bytes[ 1 ] = ( ( value[ 1 ] >> 2 ) & 31 ) | ( ( value[ 0 ] & 7 ) << 5 );
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bytes[ 0 ] = ( ( value[ 0 ] >> 3 ) & 15 );
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newSize = bytes[ 3 ] | ( (luint) bytes[ 2 ] << 8 ) | ( (luint) bytes[ 1 ] << 16 ) | ( (luint) bytes[ 0 ] << 24 );
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return newSize;
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}
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uchar int28::operator[] ( luint posn )
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{
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return value[ posn ];
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}
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