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TIFFReverseBits, TIFFSwabShort, TIFFSwabLong,
TIFFSwabArrayOfShort, TIFFSwabArrayOfLong - byte- and bit-swapping routines
#include <tiffio.h>
const unsigned char* TIFFGetBitRevTable(int reversed);
void TIFFReverseBits(u_char* data, unsigned long nbytes)
void TIFFSwabShort(uint16* data)
void TIFFSwabLong(uint32* data)
void TIFFSwabArrayOfShort(uint16* data, unsigned long nshorts)
void TIFFSwabArrayOfLong(uint32* data, unsigned long nlongs)
The
following routines are used by the library to swap 16- and 32-bit data and
to reverse the order of bits in bytes.
TIFFSwabShort and TIFFSwabLong swap
the bytes in a single 16-bit and 32-bit item, respectively. TIFFSwabArrayOfShort
and TIFFSwabArrayOfLong swap the bytes in an array of 16-bit and 32-bit items,
respectively.
TIFFReverseBits replaces each byte in data with the equivalent
bit-reversed value. This operation is done with a lookup table, TIFFBitRevTable
which is declared public. A second table, TIFFNoBitRevTable is also declared
public; it is a lookup table that can be used as an identity function;
i.e. TIFFNoBitRevTable[n] == n.
None.
libtiff(3)
,
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