#ifdef __cplusplus

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extern "C" {

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#endif

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#include <stdlib.h>

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#ifndef GD_H

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#define GD_H 1

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/* Version information. This gets parsed by build scripts as well as

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* gcc so each #define line in this group must also be splittable on

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* whitespace, take the form GD_*_VERSION and contain the magical

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* trailing comment. */

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#define GD_MAJOR_VERSION 2 /*version605b5d1778*/

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#define GD_MINOR_VERSION 2 /*version605b5d1778*/

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#define GD_RELEASE_VERSION 5 /*version605b5d1778*/

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#define GD_EXTRA_VERSION "" /*version605b5d1778*/

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/* End parsable section. */

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/* The version string. This is constructed from the version number

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* parts above via macro abuse^Wtrickery. */

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#define GDXXX_VERSION_STR(mjr, mnr, rev, ext) mjr "." mnr "." rev ext

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#define GDXXX_STR(s) GDXXX_SSTR(s) /* Two levels needed to expand args. */

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#define GDXXX_SSTR(s) #s

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#define GD_VERSION_STRING \

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GDXXX_VERSION_STR(GDXXX_STR(GD_MAJOR_VERSION), \

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GDXXX_STR(GD_MINOR_VERSION), \

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GDXXX_STR(GD_RELEASE_VERSION), \

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GD_EXTRA_VERSION)

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/* Do the DLL dance: dllexport when building the DLL,

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dllimport when importing from it, nothing when

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not on Silly Silly Windows (tm Aardman Productions). */

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/* 2.0.20: for headers */

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/* 2.0.24: __stdcall also needed for Visual BASIC

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and other languages. This breaks ABI compatibility

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with previous DLL revs, but it's necessary. */

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/* 2.0.29: WIN32 programmers can declare the NONDLL macro if they

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wish to build gd as a static library or by directly including

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the gd sources in a project. */

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/* http://gcc.gnu.org/wiki/Visibility */

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#if defined(_WIN32) || defined(CYGWIN) || defined(_WIN32_WCE)

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# ifdef BGDWIN32

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# ifdef NONDLL

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# define BGD_EXPORT_DATA_PROT

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# else

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# ifdef __GNUC__

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# define BGD_EXPORT_DATA_PROT __attribute__ ((dllexport))

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# else

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# define BGD_EXPORT_DATA_PROT __declspec(dllexport)

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# endif

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# endif

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# else

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# ifdef __GNUC__

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# define BGD_EXPORT_DATA_PROT __attribute__ ((dllimport))

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# else

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# define BGD_EXPORT_DATA_PROT __declspec(dllimport)

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# endif

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# endif

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# define BGD_STDCALL __stdcall

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# define BGD_EXPORT_DATA_IMPL

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#else

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# if defined(__GNUC__) || defined(__clang__)

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# define BGD_EXPORT_DATA_PROT __attribute__ ((visibility ("default")))

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# define BGD_EXPORT_DATA_IMPL __attribute__ ((visibility ("hidden")))

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# else

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# define BGD_EXPORT_DATA_PROT

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# define BGD_EXPORT_DATA_IMPL

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# endif

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# define BGD_STDCALL

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#endif

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#define BGD_DECLARE(rt) BGD_EXPORT_DATA_PROT rt BGD_STDCALL

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/* VS2012+ disable keyword macroizing unless _ALLOW_KEYWORD_MACROS is set

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We define inline, snprintf, and strcasecmp if they're missing

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*/

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#ifdef _MSC_VER

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# define _ALLOW_KEYWORD_MACROS

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# ifndef inline

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# define inline __inline

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# endif

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# ifndef strcasecmp

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# define strcasecmp _stricmp

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# endif

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#if _MSC_VER < 1900

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extern int snprintf(char*, size_t, const char*, ...);

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#endif

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#endif

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#ifdef __cplusplus

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extern "C"

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{

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#endif

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/* gd.h: declarations file for the graphic-draw module.

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

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

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

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* copyright notice and this permission notice appear in supporting

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* documentation. This software is provided "AS IS." Thomas Boutell and

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* Boutell.Com, Inc. disclaim all warranties, either express or implied,

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* including but not limited to implied warranties of merchantability and

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* fitness for a particular purpose, with respect to this code and accompanying

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* documentation. */

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/* stdio is needed for file I/O. */

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#include <stdio.h>

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#include <stdarg.h>

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#include "gd_io.h"

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/* The maximum number of palette entries in palette-based images.

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In the wonderful new world of gd 2.0, you can of course have

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many more colors when using truecolor mode. */

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#define gdMaxColors 256

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/* Image type. See functions below; you will not need to change

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the elements directly. Use the provided macros to

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access sx, sy, the color table, and colorsTotal for

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read-only purposes. */

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/* If 'truecolor' is set true, the image is truecolor;

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pixels are represented by integers, which

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must be 32 bits wide or more.

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True colors are repsented as follows:

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ARGB

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Where 'A' (alpha channel) occupies only the

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LOWER 7 BITS of the MSB. This very small

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loss of alpha channel resolution allows gd 2.x

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to keep backwards compatibility by allowing

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signed integers to be used to represent colors,

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and negative numbers to represent special cases,

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just as in gd 1.x. */

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#define gdAlphaMax 127

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#define gdAlphaOpaque 0

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#define gdAlphaTransparent 127

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#define gdRedMax 255

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#define gdGreenMax 255

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#define gdBlueMax 255

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/**

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* Group: Color Decomposition

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*/

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/**

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* Macro: gdTrueColorGetAlpha

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*

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* Gets the alpha channel value

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*

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* Parameters:

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* c - The color

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*

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* See also:

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* - <gdTrueColorAlpha>

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*/

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#define gdTrueColorGetAlpha(c) (((c) & 0x7F000000) >> 24)

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/**

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* Macro: gdTrueColorGetRed

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*

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* Gets the red channel value

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*

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* Parameters:

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* c - The color

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*

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* See also:

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* - <gdTrueColorAlpha>

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*/

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#define gdTrueColorGetRed(c) (((c) & 0xFF0000) >> 16)

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[180] Fix | Delete

/**

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* Macro: gdTrueColorGetGreen

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*

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* Gets the green channel value

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*

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* Parameters:

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* c - The color

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*

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* See also:

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* - <gdTrueColorAlpha>

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*/

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#define gdTrueColorGetGreen(c) (((c) & 0x00FF00) >> 8)

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/**

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* Macro: gdTrueColorGetBlue

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*

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* Gets the blue channel value

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*

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* Parameters:

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* c - The color

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*

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* See also:

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* - <gdTrueColorAlpha>

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*/

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#define gdTrueColorGetBlue(c) ((c) & 0x0000FF)

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/**

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* Group: Effects

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*

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* The layering effect

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*

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* When pixels are drawn the new colors are "mixed" with the background

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* depending on the effect.

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*

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* Note that the effect does not apply to palette images, where pixels

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* are always replaced.

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*

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* Modes:

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* gdEffectReplace - replace pixels

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* gdEffectAlphaBlend - blend pixels, see <gdAlphaBlend>

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* gdEffectNormal - default mode; same as gdEffectAlphaBlend

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* gdEffectOverlay - overlay pixels, see <gdLayerOverlay>

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* gdEffectMultiply - overlay pixels with multiply effect, see

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* <gdLayerMultiply>

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*

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* See also:

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* - <gdImageAlphaBlending>

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*/

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#define gdEffectReplace 0

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#define gdEffectAlphaBlend 1

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#define gdEffectNormal 2

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#define gdEffectOverlay 3

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#define gdEffectMultiply 4

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#define GD_TRUE 1

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#define GD_FALSE 0

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#define GD_EPSILON 1e-6

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#ifndef M_PI

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# define M_PI 3.14159265358979323846

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#endif

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/* This function accepts truecolor pixel values only. The

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source color is composited with the destination color

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based on the alpha channel value of the source color.

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The resulting color is opaque. */

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BGD_DECLARE(int) gdAlphaBlend (int dest, int src);

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BGD_DECLARE(int) gdLayerOverlay (int dest, int src);

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BGD_DECLARE(int) gdLayerMultiply (int dest, int src);

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[252] Fix | Delete

/**

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* Group: Color Quantization

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*

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* Enum: gdPaletteQuantizationMethod

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*

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* Constants:

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* GD_QUANT_DEFAULT - GD_QUANT_LIQ if libimagequant is available,

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* GD_QUANT_JQUANT otherwise.

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* GD_QUANT_JQUANT - libjpeg's old median cut. Fast, but only uses 16-bit

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* color.

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* GD_QUANT_NEUQUANT - NeuQuant - approximation using Kohonen neural network.

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* GD_QUANT_LIQ - A combination of algorithms used in libimagequant

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* aiming for the highest quality at cost of speed.

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*

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* Note that GD_QUANT_JQUANT does not retain the alpha channel, and

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* GD_QUANT_NEUQUANT does not support dithering.

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*

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* See also:

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* - <gdImageTrueColorToPaletteSetMethod>

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*/

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enum gdPaletteQuantizationMethod {

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GD_QUANT_DEFAULT = 0,

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GD_QUANT_JQUANT = 1,

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GD_QUANT_NEUQUANT = 2,

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GD_QUANT_LIQ = 3

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};

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[280] Fix | Delete

/**

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* Group: Transform

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*

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* Constants: gdInterpolationMethod

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*

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* GD_BELL - Bell

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* GD_BESSEL - Bessel

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* GD_BILINEAR_FIXED - fixed point bilinear

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* GD_BICUBIC - Bicubic

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* GD_BICUBIC_FIXED - fixed point bicubic integer

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* GD_BLACKMAN - Blackman

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* GD_BOX - Box

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* GD_BSPLINE - BSpline

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* GD_CATMULLROM - Catmullrom

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* GD_GAUSSIAN - Gaussian

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* GD_GENERALIZED_CUBIC - Generalized cubic

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* GD_HERMITE - Hermite

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* GD_HAMMING - Hamming

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* GD_HANNING - Hannig

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* GD_MITCHELL - Mitchell

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* GD_NEAREST_NEIGHBOUR - Nearest neighbour interpolation

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* GD_POWER - Power

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* GD_QUADRATIC - Quadratic

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* GD_SINC - Sinc

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* GD_TRIANGLE - Triangle

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* GD_WEIGHTED4 - 4 pixels weighted bilinear interpolation

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* GD_LINEAR - bilinear interpolation

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*

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* See also:

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* - <gdImageSetInterpolationMethod>

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* - <gdImageGetInterpolationMethod>

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*/

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typedef enum {

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GD_DEFAULT = 0,

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GD_BELL,

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GD_BESSEL,

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GD_BILINEAR_FIXED,

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GD_BICUBIC,

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GD_BICUBIC_FIXED,

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GD_BLACKMAN,

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GD_BOX,

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GD_BSPLINE,

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GD_CATMULLROM,

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GD_GAUSSIAN,

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GD_GENERALIZED_CUBIC,

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GD_HERMITE,

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GD_HAMMING,

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GD_HANNING,

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GD_MITCHELL,

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GD_NEAREST_NEIGHBOUR,

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GD_POWER,

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GD_QUADRATIC,

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GD_SINC,

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GD_TRIANGLE,

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GD_WEIGHTED4,

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GD_LINEAR,

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GD_METHOD_COUNT = 23

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} gdInterpolationMethod;

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[339] Fix | Delete

/* define struct with name and func ptr and add it to gdImageStruct gdInterpolationMethod interpolation; */

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/* Interpolation function ptr */

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typedef double (* interpolation_method )(double);

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[344] Fix | Delete

[345] Fix | Delete

/*

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Group: Types

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[348] Fix | Delete

typedef: gdImage

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[350] Fix | Delete

typedef: gdImagePtr

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[352] Fix | Delete

The data structure in which gd stores images. <gdImageCreate>,

[353] Fix | Delete

<gdImageCreateTrueColor> and the various image file-loading functions

[354] Fix | Delete

return a pointer to this type, and the other functions expect to

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receive a pointer to this type as their first argument.

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[357] Fix | Delete

*gdImagePtr* is a pointer to *gdImage*.

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[359] Fix | Delete

See also:

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<Accessor Macros>

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[362] Fix | Delete

(Previous versions of this library encouraged directly manipulating

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the contents ofthe struct but we are attempting to move away from

[364] Fix | Delete

this practice so the fields are no longer documented here. If you

[365] Fix | Delete

need to poke at the internals of this struct, feel free to look at

[366] Fix | Delete

*gd.h*.)

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*/

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typedef struct gdImageStruct {

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/* Palette-based image pixels */

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unsigned char **pixels;

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int sx;

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int sy;

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/* These are valid in palette images only. See also

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'alpha', which appears later in the structure to

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preserve binary backwards compatibility */

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int colorsTotal;

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int red[gdMaxColors];

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int green[gdMaxColors];

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int blue[gdMaxColors];

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int open[gdMaxColors];

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/* For backwards compatibility, this is set to the

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first palette entry with 100% transparency,

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and is also set and reset by the

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gdImageColorTransparent function. Newer

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applications can allocate palette entries

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with any desired level of transparency; however,

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bear in mind that many viewers, notably

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many web browsers, fail to implement

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full alpha channel for PNG and provide

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support for full opacity or transparency only. */

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int transparent;

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int *polyInts;

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int polyAllocated;

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struct gdImageStruct *brush;

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struct gdImageStruct *tile;

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int brushColorMap[gdMaxColors];

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int tileColorMap[gdMaxColors];

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int styleLength;

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int stylePos;

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int *style;

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int interlace;

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/* New in 2.0: thickness of line. Initialized to 1. */

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int thick;

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/* New in 2.0: alpha channel for palettes. Note that only

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Macintosh Internet Explorer and (possibly) Netscape 6

[406] Fix | Delete

really support multiple levels of transparency in

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palettes, to my knowledge, as of 2/15/01. Most

[408] Fix | Delete

common browsers will display 100% opaque and

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100% transparent correctly, and do something

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unpredictable and/or undesirable for levels

[411] Fix | Delete

in between. TBB */

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int alpha[gdMaxColors];

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/* Truecolor flag and pixels. New 2.0 fields appear here at the

[414] Fix | Delete

end to minimize breakage of existing object code. */

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int trueColor;

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int **tpixels;

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/* Should alpha channel be copied, or applied, each time a

[418] Fix | Delete

pixel is drawn? This applies to truecolor images only.

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No attempt is made to alpha-blend in palette images,

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even if semitransparent palette entries exist.

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To do that, build your image as a truecolor image,

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then quantize down to 8 bits. */

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int alphaBlendingFlag;

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/* Should the alpha channel of the image be saved? This affects

[425] Fix | Delete

PNG at the moment; other future formats may also

[426] Fix | Delete

have that capability. JPEG doesn't. */

[427] Fix | Delete

int saveAlphaFlag;

[428] Fix | Delete

[429] Fix | Delete

/* There should NEVER BE ACCESSOR MACROS FOR ITEMS BELOW HERE, so this

[430] Fix | Delete

part of the structure can be safely changed in new releases. */

[431] Fix | Delete

[432] Fix | Delete

/* 2.0.12: anti-aliased globals. 2.0.26: just a few vestiges after

[433] Fix | Delete

switching to the fast, memory-cheap implementation from PHP-gd. */

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int AA;

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int AA_color;

[436] Fix | Delete

int AA_dont_blend;

[437] Fix | Delete

[438] Fix | Delete

/* 2.0.12: simple clipping rectangle. These values

[439] Fix | Delete

must be checked for safety when set; please use

[440] Fix | Delete

gdImageSetClip */

[441] Fix | Delete

int cx1;

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int cy1;

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int cx2;

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int cy2;

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[446] Fix | Delete

/* 2.1.0: allows to specify resolution in dpi */

[447] Fix | Delete

unsigned int res_x;

[448] Fix | Delete

unsigned int res_y;

[449] Fix | Delete

[450] Fix | Delete

/* Selects quantization method, see gdImageTrueColorToPaletteSetMethod() and gdPaletteQuantizationMethod enum. */

[451] Fix | Delete

int paletteQuantizationMethod;

[452] Fix | Delete

/* speed/quality trade-off. 1 = best quality, 10 = best speed. 0 = method-specific default.

[453] Fix | Delete

Applicable to GD_QUANT_LIQ and GD_QUANT_NEUQUANT. */

[454] Fix | Delete

int paletteQuantizationSpeed;

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/* Image will remain true-color if conversion to palette cannot achieve given quality.

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Value from 1 to 100, 1 = ugly, 100 = perfect. Applicable to GD_QUANT_LIQ.*/

[457] Fix | Delete

int paletteQuantizationMinQuality;

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/* Image will use minimum number of palette colors needed to achieve given quality. Must be higher than paletteQuantizationMinQuality

[459] Fix | Delete

Value from 1 to 100, 1 = ugly, 100 = perfect. Applicable to GD_QUANT_LIQ.*/

[460] Fix | Delete

int paletteQuantizationMaxQuality;

[461] Fix | Delete

gdInterpolationMethod interpolation_id;

[462] Fix | Delete

interpolation_method interpolation;

[463] Fix | Delete

}

[464] Fix | Delete

gdImage;

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typedef gdImage *gdImagePtr;

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/* Point type for use in polygon drawing. */

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/**

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* Group: Types

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*

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* typedef: gdPointF

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* Defines a point in a 2D coordinate system using floating point

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* values.

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* x - Floating point position (increase from left to right)

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* y - Floating point Row position (increase from top to bottom)

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*

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* typedef: gdPointFPtr

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* Pointer to a <gdPointF>

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*

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* See also:

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* <gdImageCreate>, <gdImageCreateTrueColor>,

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**/

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typedef struct

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{

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double x, y;

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}

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gdPointF, *gdPointFPtr;

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/*

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Group: Types

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typedef: gdFont

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typedef: gdFontPtr

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