John Ellson  ([email protected])  Oct 31, 1997

==============================================================================

/********************************************/

/* gd interface to freetype library         */

/*                                          */

/* John Ellson   [email protected]        */

/********************************************/

==============================================================================

/*

    This is a header file for gd font, generated using

    bdftogd version 0.51 by Jan Pazdziora, [email protected]

    from bdf font

    -Misc-Fixed-Bold-R-Normal-Sans-15-140-75-75-C-90-ISO8859-2

    at Mon Jan 26 14:45:58 1998.

    The original bdf was holding following copyright:

    "Libor Skarvada, [email protected]"

 */

==============================================================================

/*

 * gd_jpeg.c: Read and write JPEG (JFIF) format image files using the

 * gd graphics library (http://www.libgd.org).

 * 

 * This software is based in part on the work of the Independent JPEG

 * Group.  For more information on the IJG JPEG software (and JPEG

 * documentation, etc.), see ftp://ftp.uu.net/graphics/jpeg/.

 *

 * NOTE: IJG 12-bit JSAMPLE (BITS_IN_JSAMPLE == 12) mode is not

 * supported at all on read in gd 2.0, and is not supported on write

 * except for palette images, which is sort of pointless (TBB). Even that

 * has never been tested according to DB.

 *

 * Copyright 2000 Doug Becker, mailto:[email protected]

 *

 * Modification 4/18/00 TBB: JPEG_DEBUG rather than just DEBUG,

 * so VC++ builds don't spew to standard output, causing

 * major CGI brain damage

 *

 * 2.0.10: more efficient gdImageCreateFromJpegCtx, thanks to

 * Christian Aberger 

 */

==============================================================================

/*---------------------------------------------------------------------------

    gd_png.c                 Copyright 1999 Greg Roelofs and Thomas Boutell

---------------------------------------------------------------------------*/

==============================================================================

/* Code drawn from ppmtogif.c, from the pbmplus package

**

** Based on GIFENCOD by David Rowley <[email protected]>. A

** Lempel-Zim compression based on "compress".

**

** Modified by Marcel Wijkstra <[email protected]>

**

** Copyright (C) 1989 by Jef Poskanzer.

**

** Permission to use, copy, modify, and distribute this software and its

** documentation for any purpose and without fee is hereby granted, provided

** that the above copyright notice appear in all copies and that both that

** copyright notice and this permission notice appear in supporting

** documentation.  This software is provided "as is" without express or

** implied warranty.

**

** The Graphics Interchange Format(c) is the Copyright property of

** CompuServe Incorporated.  GIF(sm) is a Service Mark property of

** CompuServe Incorporated.

*/

==============================================================================

/*

   * io.c

   *

   * Implements the simple I/O 'helper' routines.

   *

   * Not really essential, but these routines were used extensively in GD,

   * so they were moved here. They also make IOCtx calls look better...

   *

   * Written (or, at least, moved) 1999, Philip Warner.

   *

 */

==============================================================================

/*

   * gd_security.c

   *

   * Implements buffer overflow check routines.

   *

   * Written 2004, Phil Knirsch.

   * Based on netpbm fixes by Alan Cox.

   *

 */

==============================================================================

/*

   WBMP: Wireless Bitmap Type 0: B/W, Uncompressed Bitmap

   Specification of the WBMP format can be found in the file: 

   SPEC-WAESpec-19990524.pdf

   You can download the WAP specification on: http://www.wapforum.com/ 

   gd_wbmp.c

   Copyright (C) Johan Van den Brande ([email protected])

   Fixed: gdImageWBMPPtr, gdImageWBMP

   Recoded: gdImageWBMPCtx for use with my wbmp library

   (wbmp library included, but you can find the latest distribution

   at http://www.vandenbrande.com/wbmp)

   Implemented: gdImageCreateFromWBMPCtx, gdImageCreateFromWBMP 

   ---------------------------------------------------------------------------

   Parts of this code are from Maurice Smurlo.

   ** Copyright (C) Maurice Szmurlo --- T-SIT --- January 2000

   ** ([email protected])

   ** Permission to use, copy, modify, and distribute this software and its

   ** documentation for any purpose and without fee is hereby granted, provided

   ** that the above copyright notice appear in all copies and that both that

   ** copyright notice and this permission notice appear in supporting

   ** documentation.  This software is provided "as is" without express or

   ** implied warranty.

   ---------------------------------------------------------------------------

   Parts od this code are inspired by  'pbmtowbmp.c' and 'wbmptopbm.c' by 

   Terje Sannum <[email protected]>.

   **

   ** Permission to use, copy, modify, and distribute this software and its

   ** documentation for any purpose and without fee is hereby granted, provided

   ** that the above copyright notice appear in all copies and that both that

   ** copyright notice and this permission notice appear in supporting

   ** documentation.  This software is provided "as is" without express or

   ** implied warranty.

   **

   -------------------------------------------------------------------------- */

==============================================================================

/*

 * gd_topal, adapted from jquant2.c

 *

 * Copyright (C) 1991-1996, Thomas G. Lane.

 * This file is part of the Independent JPEG Group's software.

 * For conditions of distribution and use, see the accompanying README file.

 *

 * This file contains 2-pass color quantization (color mapping) routines.

 * These routines provide selection of a custom color map for an image,

 * followed by mapping of the image to that color map, with optional

 * Floyd-Steinberg dithering.

 * It is also possible to use just the second pass to map to an arbitrary

 * externally-given color map.

 *

 * Note: ordered dithering is not supported, since there isn't any fast

 * way to compute intercolor distances; it's unclear that ordered dither's

 * fundamental assumptions even hold with an irregularly spaced color map.

 */

==============================================================================