TIFFswab¶
Synopsis¶
#include <tiffio.h>
-
const unsigned char *
TIFFGetBitRevTable
(int reversed)¶
-
void
TIFFReverseBits
(u_char *data, unsigned long nbytes)¶
-
void
TIFFSwabShort
(uint16_t *data)¶
-
void
TIFFSwabLong
(uint32_t *data)¶
-
void
TIFFSwabLong8
(uint64_t *lp)¶
-
void
TIFFSwabFloat
(float *fp)¶
-
void
TIFFSwabDouble
(double *dp)¶
-
void
TIFFSwabArrayOfShort
(uint16_t *wp, tmsize_t n)¶
-
void
TIFFSwabArrayOfTriples
(uint8_t *tp, tmsize_t n)¶
-
void
TIFFSwabArrayOfLong
(uint32_t *lp, tmsize_t n)¶
-
void
TIFFSwabArrayOfLong8
(uint64_t *lp, tmsize_t n)¶
-
void
TIFFSwabArrayOfFloat
(float *fp, tmsize_t n)¶
-
void
TIFFSwabArrayOfDouble
(double *dp, tmsize_t n)¶
Description¶
The following routines are used by the library to swap 16-, 32- and 64-bit data and to reverse the order of bits in bytes.
TIFFSwabShort()
and TIFFSwabLong()
and TIFFSwabFloat()
swap the bytes in a single 16- and 32-bit item, respectively.
TIFFSwabLong8()
and TIFFSwabDouble()
swap the bytes in a single 64-bit item.
TIFFSwabArrayOfTriples()
swap the first and the third byte of
each triple (three bytes) within the byte array. The second byte of each
triple stays untouched.
TIFFSwabArrayOfShort()
and TIFFSwabArrayOfLong()
,
TIFFSwabArrayOfFloat()
swap the bytes in an array of 16- and 32-bit
items, respectively.
TIFFSwabArrayOfLong8()
and TIFFSwabArrayOfDouble()
swap the bytes in an array of 64-bit items.
TIFFReverseBits()
replaces each byte in data with the
equivalent bit-reversed value. This operation is performed with a
lookup table, which is returned using the TIFFGetBitRevTable()
function. The reversed parameter specifies which table should be
returned. Supply 1 if you want bit reversal table. Supply 0 to get
the table that do not reverse bit values. It is a lookup table that can
be used as an “identity function”; i.e. TIFFNoBitRevTable[n] == n
.
Diagnostics¶
None.