1SWAB(3TIFF)                                                        SWAB(3TIFF)
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NAME

6       TIFFGetBitRevTable, TIFFReverseBits, TIFFSwabShort, TIFFSwabLong, TIFF‐
7       SwabArrayOfShort, TIFFSwabArrayOfLong - byte- and bit-swapping routines
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SYNOPSIS

10       #include <tiffio.h>
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12       const unsigned char* TIFFGetBitRevTable(int reversed)
13       void TIFFReverseBits(u_char *data, unsigned long nbytes)
14       void TIFFSwabShort(uint16 *data)
15       void TIFFSwabLong(uint32 *data)
16       void TIFFSwabArrayOfShort(uint16 *data, unsigned long nshorts)
17       void TIFFSwabArrayOfLong(uint32 *data, unsigned long nlongs)
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DESCRIPTION

20       The following routines are used by the library to swap 16-  and  32-bit
21       data and to reverse the order of bits in bytes.
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23       TIFFSwabShort  and  TIFFSwabLong  swap the bytes in a single 16-bit and
24       32-bit item, respectively.  TIFFSwabArrayOfShort  and  TIFFSwabArrayOf‐
25       Long  swap  the  bytes  in an array of 16-bit and 32-bit items, respec‐
26       tively.
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28       TIFFReverseBits replaces each byte in data  with  the  equivalent  bit-
29       reversed  value. This operation is performed with a lookup table, which
30       is returned using the TIFFGetBitRevTable function.  reversed  parameter
31       specifies  which  table  should  be  returned. Supply 1 if you want bit
32       reversal table. Supply 0 to get the table that do not reverse bit  val‐
33       ues.  It  is  a  lookup table that can be used as an identity function;
34       i.e.  TIFFNoBitRevTable[n] == n.
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DIAGNOSTICS

37       None.
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SEE ALSO

40       libtiff(3TIFF)
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42       Libtiff library home page: http://www.remotesensing.org/libtiff/
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46libtiff                        November 04, 2004                   SWAB(3TIFF)
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