Initial community commit

Src/id3v2/id3_int28.cpp

@@ -0,0 +1,62 @@
+// 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.
+// Mon Nov 23 18:34:01 1998
+
+
+#include "id3_int28.h"
+#include <bfc/platform/types.h>
+
+int28::int28(uint32_t val)
+{
+ set ( val );
+}
+
+
+int28::int28(const uchar *val)
+{
+ for ( int i = 0; i < sizeof ( uint32_t ); i++ )
+ value[ i ] = val[ i ];
+}
+
+
+void int28::set(uint32_t val)
+{
+ for ( int i = 0; i < sizeof ( uint32_t ); i++ )
+ value[ sizeof ( uint32_t ) - 1 - i ] = (uint8_t) ( ( val >> ( i * 7 ) ) & 127 ) & 0xFF;
+
+ return;
+}
+
+int28 &int28::setFromFile(uint32_t val)
+{
+ for ( int i = 0; i < sizeof ( uint32_t ); i++ )
+	value[sizeof(uint32_t) - 1 - i] = (uint8_t) (val >>(i*8)) & 0xFF;
+
+ return *this;
+}
+
+
+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 ];
+}
+