109 lines
2.3 KiB
HTML
109 lines
2.3 KiB
HTML
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
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<HTML><HEAD><TITLE>Manpage of SWAB</TITLE>
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</HEAD><BODY BGCOLOR=WHITE><FONT FACE="helvetica, sans, arial">
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<H1>SWAB</H1>
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Section: Misc. Reference Manual Pages (3T)<BR>Updated: December 16, 1991<BR><A HREF="#index">Index</A>
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<BR><A HREF="index.html">Return to Main Contents</A>
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<HR>
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<A NAME="lbAB"> </A>
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<H2>NAME</H2>
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TIFFReverseBits, TIFFSwabShort, TIFFSwabLong, TIFFSwabArrayOfShort, TIFFSwabArrayOfLong - byte- and bit-swapping routines
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<A NAME="lbAC"> </A>
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<H2>SYNOPSIS</H2>
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<B>#include <<A HREF="file:/usr/include/tiffio.h">tiffio.h</A>></B>
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<BR>
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<B>const unsigned char* TIFFGetBitRevTable(int reversed);</B>
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<BR>
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<B>void TIFFReverseBits(u_char* data, unsigned long nbytes)</B>
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<BR>
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<B>void TIFFSwabShort(uint16* data)</B>
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<BR>
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<B>void TIFFSwabLong(uint32* data)</B>
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<BR>
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<B>void TIFFSwabArrayOfShort(uint16* data, unsigned long nshorts)</B>
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<BR>
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<B>void TIFFSwabArrayOfLong(uint32* data, unsigned long nlongs)</B>
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<A NAME="lbAD"> </A>
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<H2>DESCRIPTION</H2>
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The following routines are used by the library to swap
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16- and 32-bit data and to reverse the order of bits in bytes.
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<P>
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<I>TIFFSwabShort</I>
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and
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<I>TIFFSwabLong</I>
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swap the bytes in a single 16-bit and 32-bit item, respectively.
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<I>TIFFSwabArrayOfShort</I>
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and
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<I>TIFFSwabArrayOfLong</I>
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swap the bytes in an array of 16-bit and 32-bit items, respectively.
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<P>
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<I>TIFFReverseBits</I>
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replaces each byte in
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<I>data</I>
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with the equivalent bit-reversed value.
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This operation is done with a lookup table,
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<I>TIFFBitRevTable</I>
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which is declared public.
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A second table,
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<I>TIFFNoBitRevTable</I>
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is also declared public; it is a lookup table that
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can be used as an
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<I>identity function</I>;
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i.e.
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<I>TIFFNoBitRevTable[n] == n</I>.
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<A NAME="lbAE"> </A>
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<H2>DIAGNOSTICS</H2>
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None.
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<A NAME="lbAF"> </A>
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<H2>SEE ALSO</H2>
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<I><A HREF="libtiff.3t.html">libtiff</A></I>(3T),
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<HR>
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<A NAME="index"> </A><H2>Index</H2>
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<DL>
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<DT><A HREF="#lbAB">NAME</A><DD>
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<DT><A HREF="#lbAC">SYNOPSIS</A><DD>
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<DT><A HREF="#lbAD">DESCRIPTION</A><DD>
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<DT><A HREF="#lbAE">DIAGNOSTICS</A><DD>
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<DT><A HREF="#lbAF">SEE ALSO</A><DD>
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</DL>
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<HR>
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This document was created by
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<A HREF="index.html">man2html</A>,
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using the manual pages.<BR>
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Time: 01:31:39 GMT, November 23, 1999
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</HTML>
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