Add new shared extension for PHP.

9 files changed, 2467 insertions, 0 deletions

diff --git a/graphics/php4-gd/Makefile b/graphics/php4-gd/Makefile
new file mode 100644
index 0000000..4e1f0b8
--- /dev/null
+++ b/graphics/php4-gd/Makefile
@@ -0,0 +1,14 @@
+# New ports collection makefile for:	php4-gd
+# Date created:			7 Jul 2004
+# Whom:				Alex Dupre <ale@FreeBSD.org>
+#
+# $FreeBSD$
+#
+
+CATEGORIES=	graphics
+
+MASTERDIR=	${.CURDIR}/../../lang/php4
+
+PKGNAMESUFFIX=	-gd
+
+.include "${MASTERDIR}/Makefile"
diff --git a/graphics/php4-gd/files/patch-config.m4 b/graphics/php4-gd/files/patch-config.m4
new file mode 100644
index 0000000..4d79567
--- /dev/null
+++ b/graphics/php4-gd/files/patch-config.m4
@@ -0,0 +1,80 @@
+--- config.m4.orig	Thu Dec 25 23:33:02 2003
++++ config.m4	Wed Jul  7 14:37:18 2004
+@@ -43,6 +43,9 @@
+ PHP_ARG_ENABLE(gd-jis-conv, whether to enable JIS-mapped Japanese font support in GD,
+ [  --enable-gd-jis-conv      GD: Enable JIS-mapped Japanese font support.], no, no)
+ 
++PHP_ARG_ENABLE(gd-lzw-gif, whether to enable LZW-compressed GIF support in GD,
++[  --enable-gd-lzw-gif       GD: Enable LZW-compressed GIF support.], no, no)
++
+ dnl  
+ dnl Checks for the configure options 
+ dnl 
+@@ -219,7 +222,7 @@
+     ],[
+       AC_MSG_ERROR([Problem with libt1.(a|so). Please check config.log for more information.]) 
+     ],[
+-      -L$GD_T1_DIR/lib
++      -L$GD_T1_DIR/lib -lm
+     ])
+   fi
+ ])
+@@ -236,6 +239,12 @@
+   fi
+ ])
+ 
++AC_DEFUN(PHP_GD_LZW,[
++  if test "$PHP_GD_LZW_GIF" = "yes"; then
++    USE_GD_LZW_GIF=1
++  fi
++])
++
+ AC_DEFUN(PHP_GD_CHECK_VERSION,[
+   PHP_CHECK_LIBRARY(gd, gdImageString16,        [AC_DEFINE(HAVE_LIBGD13,             1, [ ])], [], [ -L$GD_LIB $GD_SHARED_LIBADD ])
+   PHP_CHECK_LIBRARY(gd, gdImagePaletteCopy,     [AC_DEFINE(HAVE_LIBGD15,             1, [ ])], [], [ -L$GD_LIB $GD_SHARED_LIBADD ])
+@@ -256,6 +265,7 @@
+   PHP_CHECK_LIBRARY(gd, gdImageColorClosestHWB, [AC_DEFINE(HAVE_COLORCLOSESTHWB,     1, [ ])], [], [ -L$GD_LIB $GD_SHARED_LIBADD ])
+   PHP_CHECK_LIBRARY(gd, gdImageColorResolve,    [AC_DEFINE(HAVE_GDIMAGECOLORRESOLVE, 1, [ ])], [], [ -L$GD_LIB $GD_SHARED_LIBADD ])
+   PHP_CHECK_LIBRARY(gd, gdImageGifCtx,          [AC_DEFINE(HAVE_GD_GIF_CTX,          1, [ ])], [], [ -L$GD_LIB $GD_SHARED_LIBADD ])
++  PHP_CHECK_LIBRARY(gd, gdImageGifAnimBegin,    [AC_DEFINE(HAVE_GD_GIF_ANIM,         1, [ ])], [], [ -L$GD_LIB $GD_SHARED_LIBADD ])
+   PHP_CHECK_LIBRARY(gd, gdCacheCreate,          [AC_DEFINE(HAVE_GD_CACHE_CREATE,     1, [ ])], [], [ -L$GD_LIB $GD_SHARED_LIBADD ])
+   PHP_CHECK_LIBRARY(gd, gdFontCacheShutdown,    [AC_DEFINE(HAVE_GD_THREAD_SAFE,      1, [ ])], [], [ -L$GD_LIB $GD_SHARED_LIBADD ])
+ ])
+@@ -271,6 +281,7 @@
+                  libgd/gdxpm.c libgd/gdfontt.c libgd/gdfonts.c libgd/gdfontmb.c libgd/gdfontl.c \
+                  libgd/gdfontg.c libgd/gdtables.c libgd/gdft.c libgd/gdcache.c libgd/gdkanji.c \
+                  libgd/wbmp.c libgd/gd_wbmp.c libgd/gdhelpers.c libgd/gd_topal.c libgd/gd_gif_in.c \
++                 libgd/gd_biggif_out.c libgd/gd_lzw_out.c libgd/gd_gif_out.c \
+                  libgd/xbm.c"
+ 
+ dnl check for fabsf and floorf which are available since C99
+@@ -282,6 +293,7 @@
+ dnl Various checks for GD features
+   PHP_GD_TTSTR
+   PHP_GD_JISX0208
++  PHP_GD_LZW
+   PHP_GD_JPEG
+   PHP_GD_PNG
+   PHP_GD_XPM
+@@ -305,6 +317,9 @@
+   AC_DEFINE(HAVE_GD_XBM,              1, [ ])
+   AC_DEFINE(HAVE_GD_BUNDLED,          1, [ ])
+   AC_DEFINE(HAVE_GD_GIF_READ,         1, [ ])
++  AC_DEFINE(HAVE_GD_GIF_CREATE,       1, [ ])
++  AC_DEFINE(HAVE_GD_GIF_CTX,          1, [ ])
++  AC_DEFINE(HAVE_GD_GIF_ANIM,         1, [ ])
+   AC_DEFINE(HAVE_GD_IMAGEELLIPSE,     1, [ ])
+ 
+ dnl Make sure the libgd/ is first in the include path
+@@ -336,6 +351,11 @@
+   if test -n "$USE_GD_JIS_CONV"; then
+     AC_DEFINE(USE_GD_JISX0208, 1, [ ])
+     GDLIB_CFLAGS="$GDLIB_CFLAGS -DJISX0208"
++  fi
++
++  if test -n "$USE_GD_LZW_GIF"; then
++    AC_DEFINE(USE_GD_LZW, 1, [ ])
++    GDLIB_CFLAGS="$GDLIB_CFLAGS -DLZW_LICENCED"
+   fi
+ 
+ else
diff --git a/graphics/php4-gd/files/patch-gd.c b/graphics/php4-gd/files/patch-gd.c
new file mode 100644
index 0000000..3faf7bb
--- /dev/null
+++ b/graphics/php4-gd/files/patch-gd.c
@@ -0,0 +1,50 @@
+--- gd.c.orig	Wed Jun  4 02:22:30 2003
++++ gd.c	Sat Jun 28 15:47:56 2003
+@@ -206,6 +206,11 @@
+ #ifdef HAVE_GD_GIF_CREATE
+ 	PHP_FE(imagegif,								NULL)
+ #endif
++#ifdef HAVE_GD_GIF_ANIM
++	PHP_FE(imagegifanimbegin,						NULL)
++	PHP_FE(imagegifanimadd,							NULL)
++	PHP_FE(imagegifanimend,							NULL)
++#endif
+ #ifdef HAVE_GD_JPG
+ 	PHP_FE(imagejpeg,								NULL)
+ #endif
+@@ -1707,11 +1712,35 @@
+ #ifdef HAVE_GD_GIF_CTX
+ 	_php_image_output_ctx(INTERNAL_FUNCTION_PARAM_PASSTHRU, PHP_GDIMG_TYPE_GIF, "GIF", gdImageGifCtx);
+ #else
++
++#ifdef HAVE_GD_BUNDLED
++#error "I really think there should be ctx version of imagegif in the bundled GD library.  Fix the configuration."
++#endif
++
+ 	_php_image_output(INTERNAL_FUNCTION_PARAM_PASSTHRU, PHP_GDIMG_TYPE_GIF, "GIF", gdImageGif);
+ #endif
+ }
+ /* }}} */
+ #endif /* HAVE_GD_GIF_CREATE */
++
++#ifdef HAVE_GD_GIF_ANIM
++/* {{{ proto int imagegifanimbegin(int im [, string filename [, int GlobalColormap [, int Loops]]])
++   Begin GIF animation.  Image parameter is only used for size and colormap,
++   all animation frames must be added separately. */
++PHP_FUNCTION(imagegifanimbegin)
++{
++	_php_image_output_ctx(INTERNAL_FUNCTION_PARAM_PASSTHRU, PHP_GDIMG_TYPE_GIFANIMBEGIN, "GIF", gdImageGifAnimBeginCtx);
++}
++/* }}} */
++
++/* {{{ proto int imagegifanimadd(int im [, string filename [, int LocalColormap [, LeftOfs [, int TopOfs [, int Delay [, int Disposal]]]]]])
++   Append GIF image to animation */
++PHP_FUNCTION(imagegifanimadd)
++{
++	_php_image_output_ctx(INTERNAL_FUNCTION_PARAM_PASSTHRU, PHP_GDIMG_TYPE_GIFANIMADD, "GIF", gdImageGifAnimAddCtx);
++}
++/* }}} */
++#endif /* HAVE_GD_GIF_ANIM */
+ 
+ #ifdef HAVE_GD_PNG
+ /* {{{ proto int imagepng(int im [, string filename])
diff --git a/graphics/php4-gd/files/patch-gd_ctx.c b/graphics/php4-gd/files/patch-gd_ctx.c
new file mode 100644
index 0000000..a3f9a88
--- /dev/null
+++ b/graphics/php4-gd/files/patch-gd_ctx.c
@@ -0,0 +1,158 @@
+--- gd_ctx.c.orig	Wed Mar 12 05:16:31 2003
++++ gd_ctx.c	Sat Jun 28 15:47:56 2003
+@@ -24,17 +24,22 @@
+ 	
+ static void _php_image_output_ctx(INTERNAL_FUNCTION_PARAMETERS, int image_type, char *tn, void (*func_p)()) 
+ {
+-	zval **imgind, **file, **quality;
++	zval **imgind, **file, **quality, **lo, **to, **del, **dis;
+ 	gdImagePtr im;
+ 	char *fn = NULL;
+ 	FILE *fp = NULL;
+ 	int argc = ZEND_NUM_ARGS();
+ 	int q = -1, i;
++#ifdef HAVE_GD_GIF_ANIM
++	int LeftOfs = -1, TopOfs = -1, Delay = -1, Disposal = -1;
++#endif /* HAVE_GD_GIF_ANIM */
+ 	gdIOCtx *ctx;
+ 
+ 	/* The quality parameter for Wbmp stands for the threshold when called from image2wbmp() */
++	/* The quality parameter for GIF animation stands for colormap inclusion. 1==include local/global colormap */
++	/* The LeftOfs parameter for GIF animation begin stands for NETSCAPE2.0 Loop count extension. */
+ 	
+-	if (argc < 1 || argc > 3 || zend_get_parameters_ex(argc, &imgind, &file, &quality) == FAILURE) 
++	if (argc < 1 || argc > 7 || zend_get_parameters_ex(argc, &imgind, &file, &quality, &lo, &to, &del, &dis) == FAILURE) 
+ 	{
+ 		WRONG_PARAM_COUNT;
+ 	}
+@@ -44,11 +49,29 @@
+ 	if (argc > 1) {
+ 		convert_to_string_ex(file);
+ 		fn = Z_STRVAL_PP(file);
+-		if (argc == 3) {
+-			convert_to_long_ex(quality);
+-			q = Z_LVAL_PP(quality);
+-		}
+ 	}
++	if (argc >= 3) {
++		convert_to_long_ex(quality);
++		q = Z_LVAL_PP(quality);
++	}
++#ifdef HAVE_GD_GIF_ANIM
++	if (argc >= 4) {
++		convert_to_long_ex(lo);
++		LeftOfs = Z_LVAL_PP(lo);
++	}
++	if (argc >= 5) {
++		convert_to_long_ex(to);
++		TopOfs = Z_LVAL_PP(to);
++	}
++	if (argc >= 6) {
++		convert_to_long_ex(del);
++		Delay = Z_LVAL_PP(del);
++	}
++	if (argc >= 7) {
++		convert_to_long_ex(dis);
++		Disposal = Z_LVAL_PP(dis);
++	}
++#endif /* HAVE_GD_GIF_ANIM */
+ 
+ 	if ((argc == 2) || (argc > 2 && Z_STRLEN_PP(file))) {
+ 		if (!fn || fn == empty_string || php_check_open_basedir(fn TSRMLS_CC)) {
+@@ -56,7 +79,7 @@
+ 			RETURN_FALSE;
+ 		}
+ 
+-		fp = VCWD_FOPEN(fn, "wb");
++		fp = VCWD_FOPEN(fn, PHP_GDIMG_TYPE_GIFANIMADD == image_type ? "ab" : "wb");
+ 		if (!fp) {
+ 			php_error_docref(NULL TSRMLS_CC, E_WARNING, "Unable to open '%s' for writing", fn);
+ 			RETURN_FALSE;
+@@ -94,6 +117,14 @@
+ 			} 
+ 			(*func_p)(im, i, ctx);
+ 			break;
++#ifdef HAVE_GD_GIF_ANIM
++		case PHP_GDIMG_TYPE_GIFANIMBEGIN:
++			(*func_p)(im, ctx, q, LeftOfs);
++			break;
++		case PHP_GDIMG_TYPE_GIFANIMADD:
++			(*func_p)(im, ctx, q, LeftOfs, TopOfs, Delay, Disposal);
++			break;
++#endif /* HAVE_GD_GIF_ANIM */
+ 		default:
+ 			(*func_p)(im, ctx);
+ 			break;
+@@ -112,3 +143,72 @@
+ 	
+     RETURN_TRUE;
+ }
++
++#ifdef HAVE_GD_GIF_ANIM
++/* {{{ proto int imagegifanimend([string filename])
++   Write end mark to gif animation. */
++PHP_FUNCTION(imagegifanimend)
++{
++	zval **file;
++	char *fn = NULL;
++	FILE *fp = NULL;
++	int argc = ZEND_NUM_ARGS();
++	gdIOCtx *ctx;
++
++	if (argc < 0 || argc > 1 || zend_get_parameters_ex(argc, &file) == FAILURE) {
++		ZEND_WRONG_PARAM_COUNT();
++	}
++
++	if (argc >= 1) {
++		convert_to_string_ex(file);
++		fn = Z_STRVAL_PP(file);
++	}
++
++	if ((argc == 1) || (argc > 1 && Z_STRLEN_PP(file))) {
++		if (!fn || fn == empty_string || php_check_open_basedir(fn TSRMLS_CC)) {
++			php_error_docref(NULL TSRMLS_CC, E_WARNING, "Invalid filename '%s'", fn);
++			RETURN_FALSE;
++		}
++
++		fp = VCWD_FOPEN(fn, "ab");
++		if (!fp) {
++			php_error_docref(NULL TSRMLS_CC, E_WARNING, "Unable to open '%s' for writing", fn);
++			RETURN_FALSE;
++		}
++
++		ctx = gdNewFileCtx(fp);
++	} else {
++		ctx = emalloc(sizeof(gdIOCtx));
++		ctx->putC = _php_image_output_putc;
++		ctx->putBuf = _php_image_output_putbuf;
++#if HAVE_LIBGD204
++		ctx->gd_free = _php_image_output_ctxfree;
++#else
++		ctx->free = _php_image_output_ctxfree;
++#endif		
++
++#if APACHE && defined(CHARSET_EBCDIC)
++		/* XXX this is unlikely to work any more thies@thieso.net */
++		/* This is a binary file already: avoid EBCDIC->ASCII conversion */
++		ap_bsetflag(php3_rqst->connection->client, B_EBCDIC2ASCII, 0);
++#endif
++	}
++
++	/* This could be coded in here, as it only outputs ';' */
++	gdImageGifAnimEndCtx(ctx);
++
++#if HAVE_LIBGD204	
++	ctx->gd_free(ctx);
++#else
++	ctx->free(ctx);
++#endif		
++
++	if(fp) {
++		fflush(fp);
++		fclose(fp);
++	}
++	
++    RETURN_TRUE;
++}
++/* }}} */
++#endif /* HAVE_GD_GIF_ANIM */
diff --git a/graphics/php4-gd/files/patch-libgd::gd.h b/graphics/php4-gd/files/patch-libgd::gd.h
new file mode 100644
index 0000000..7d15f41
--- /dev/null
+++ b/graphics/php4-gd/files/patch-libgd::gd.h
@@ -0,0 +1,45 @@
+--- libgd/gd.h.orig	Wed Apr  9 03:55:56 2003
++++ libgd/gd.h	Sat Jun 28 15:47:56 2003
+@@ -446,6 +446,30 @@
+ gdImagePtr gdImageCreateFromGifCtx(gdIOCtxPtr in);
+ gdImagePtr gdImageCreateFromGifSource(gdSourcePtr in);
+ 
++void gdImageLzw(gdImagePtr im, FILE *out);
++void* gdImageLzwPtr(gdImagePtr im, int *size);
++void gdImageLzwCtx(gdImagePtr im, gdIOCtxPtr out);
++
++void gdImageBigGif(gdImagePtr im, FILE *out);
++void* gdImageBigGifPtr(gdImagePtr im, int *size);
++void gdImageBigGifCtx(gdImagePtr im, gdIOCtxPtr out);
++
++void gdImageGifAnimBegin(gdImagePtr im, FILE *outFile, int GlobalCM, int Loops);
++void gdImageGifAnimAdd(gdImagePtr im, FILE *outFile, int LocalCM, int LeftOfs, int TopOfs, int Delay, int Disposal);
++void gdImageLzwAnimAdd(gdImagePtr im, FILE *outFile, int LocalCM, int LeftOfs, int TopOfs, int Delay, int Disposal);
++void gdImageBigGifAnimAdd(gdImagePtr im, FILE *outFile, int LocalCM, int LeftOfs, int TopOfs, int Delay, int Disposal);
++void gdImageGifAnimEnd(FILE *outFile);
++void gdImageGifAnimBeginCtx(gdImagePtr im, gdIOCtx *out, int GlobalCM, int Loops);
++void gdImageGifAnimAddCtx(gdImagePtr im, gdIOCtx *out, int LocalCM, int LeftOfs, int TopOfs, int Delay, int Disposal);
++void gdImageLzwAnimAddCtx(gdImagePtr im, gdIOCtx *out, int LocalCM, int LeftOfs, int TopOfs, int Delay, int Disposal);
++void gdImageBigGifAnimAddCtx(gdImagePtr im, gdIOCtx *out, int LocalCM, int LeftOfs, int TopOfs, int Delay, int Disposal);
++void gdImageGifAnimEndCtx(gdIOCtx *out);
++void *gdImageGifAnimBeginPtr(gdImagePtr im, int *size, int GlobalCM, int Loops);
++void *gdImageGifAnimAddPtr(gdImagePtr im, int *size, int LocalCM, int LeftOfs, int TopOfs, int Delay, int Disposal);
++void *gdImageLzwAnimAddPtr(gdImagePtr im, int *size, int LocalCM, int LeftOfs, int TopOfs, int Delay, int Disposal);
++void *gdImageBigGifAnimAddPtr(gdImagePtr im, int *size, int LocalCM, int LeftOfs, int TopOfs, int Delay, int Disposal);
++void *gdImageGifAnimEndPtr(int *size);
++
+ /* A custom data sink. For backwards compatibility. Use
+ 	gdIOCtx instead. */
+ /* The sink function must return -1 on error, otherwise the number
+@@ -457,6 +481,11 @@
+ } gdSink, *gdSinkPtr;
+ 
+ void gdImagePngToSink(gdImagePtr im, gdSinkPtr out);
++
++void gdImageGif (gdImagePtr im, FILE *out);
++void* gdImageGifPtr (gdImagePtr im, int *size);
++void gdImageGifCtx (gdImagePtr im, gdIOCtxPtr out);
++void gdImageGifToSink (gdImagePtr im, gdSinkPtr out);
+ 
+ void gdImageGd(gdImagePtr im, FILE *out);
+ void gdImageGd2(gdImagePtr im, FILE *out, int cs, int fmt);
diff --git a/graphics/php4-gd/files/patch-libgd::gd_biggif_out.c b/graphics/php4-gd/files/patch-libgd::gd_biggif_out.c
new file mode 100644
index 0000000..efa29dc
--- /dev/null
+++ b/graphics/php4-gd/files/patch-libgd::gd_biggif_out.c
@@ -0,0 +1,1087 @@
+--- libgd/gd_biggif_out.c.orig	Sat Jun 28 15:47:56 2003
++++ libgd/gd_biggif_out.c	Sat Jun 28 15:47:56 2003
+@@ -0,0 +1,1084 @@
++#include <stdio.h>
++#include <math.h>
++#include <string.h>
++#include <stdlib.h>
++#include "gd.h"
++#include "gdhelpers.h"
++
++/*
++** Wrapper functions for this module.
++*/
++
++void gdImageBigGif(gdImagePtr im, FILE *outFile)
++{
++        gdIOCtx   *out = gdNewFileCtx(outFile);
++        gdImageBigGifCtx(im, out);
++	out->gd_free(out);
++}
++
++void* gdImageBigGifPtr(gdImagePtr im, int *size)
++{
++	void	*rv;
++        gdIOCtx   *out = gdNewDynamicCtx(2048, NULL);
++        gdImageBigGifCtx(im, out);
++	rv = gdDPExtractData(out,size);
++ 	out->gd_free(out);
++	return rv;
++}
++
++void gdImageGifAnimBegin(gdImagePtr im, FILE *outFile, int GlobalCM, int Loops)
++{
++        gdIOCtx   *out = gdNewFileCtx(outFile);
++        gdImageGifAnimBeginCtx(im, out, GlobalCM, Loops);
++        out->gd_free(out);
++}
++
++void *gdImageGifAnimBeginPtr(gdImagePtr im, int *size, int GlobalCM, int Loops)
++{
++	void	*rv;
++        gdIOCtx   *out = gdNewDynamicCtx(2048, NULL);
++        gdImageGifAnimBeginCtx(im, out, GlobalCM, Loops);
++        rv = gdDPExtractData(out,size);
++	out->gd_free(out);
++	return rv;
++}
++
++void gdImageBigGifAnimAdd(gdImagePtr im, FILE *outFile, int LocalCM, int LeftOfs, int TopOfs, int Delay, int Disposal)
++{
++        gdIOCtx   *out = gdNewFileCtx(outFile);
++        gdImageBigGifAnimAddCtx(im, out, LocalCM, LeftOfs, TopOfs, Delay, Disposal);
++        out->gd_free(out);
++}
++
++void *gdImageBigGifAnimAddPtr(gdImagePtr im, int *size, int LocalCM, int LeftOfs, int TopOfs, int Delay, int Disposal)
++{
++	void	*rv;
++        gdIOCtx   *out = gdNewDynamicCtx(2048, NULL);
++        gdImageBigGifAnimAddCtx(im, out, LocalCM, LeftOfs, TopOfs, Delay, Disposal);
++        rv = gdDPExtractData(out,size);
++	out->gd_free(out);
++	return rv;
++}
++
++void gdImageGifAnimEnd(FILE *outFile)
++{
++#if 1
++	putc (';', outFile);
++#else
++        gdIOCtx   *out = gdNewFileCtx(outFile);
++        gdImageGifAnimEndCtx(out);
++        out->gd_free(out);
++#endif
++}
++
++void* gdImageGifAnimEndPtr(int *size)
++{
++	char *rv = (char *) gdMalloc (1);
++	*rv = ';';
++	*size = 1;
++	return (void *)rv;
++}
++
++
++/* Code drawn from ppmtogif.c, from the pbmplus package
++**
++** Based on GIFENCOD by David Rowley <mgardi@watdscu.waterloo.edu>. A
++** Lempel-Zim compression based on "compress".
++**
++** Modified by Marcel Wijkstra <wijkstra@fwi.uva.nl>
++**
++** 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.
++*
++*  Heavily modified by Mouse, 1998-02-12.  
++*  Remove LZW compression.
++*  Added miGIF run length compression.
++*
++*/
++
++/*
++ * a code_int must be able to hold 2**GIFBITS values of type int, and also -1
++ */
++typedef int code_int;
++
++static int colorstobpp(int colors);
++static void BumpPixel (void);
++static int GIFNextPixel (gdImagePtr im);
++static void GIFEncode (gdIOCtx *fp, int GWidth, int GHeight, int GInterlace, int Background, int Transparent, int BitsPerPixel, int *Red, int *Green, int *Blue, gdImagePtr im);
++static void GIFAnimEncode(gdIOCtx *fp, int IWidth, int IHeight, int LeftOfs, int TopOfs, int GInterlace, int Transparent, int Delay, int Disposal, int BitsPerPixel, int *Red, int *Green, int *Blue, gdImagePtr im);
++/*static void Putword (int w, gdIOCtx *fp); */
++static void GIFcompress (int, gdIOCtx *, gdImagePtr);
++static void output (code_int code);
++
++/* UNUSED
++* static void char_init (void);
++* static void char_out (int c);
++*/
++
++/* Allows for reuse */
++static void init_statics(void);
++
++void gdImageBigGifCtx(gdImagePtr im, gdIOCtx *out)
++{
++	int interlace, transparent, BitsPerPixel;
++
++	interlace = im->interlace;
++	transparent = im->transparent;
++
++	BitsPerPixel = colorstobpp(im->colorsTotal);
++	/* Clear any old values in statics strewn through the GIF code */
++	init_statics();
++	/* All set, let's do it. */
++	GIFEncode(
++		out, im->sx, im->sy, interlace, 0, transparent, BitsPerPixel,
++		im->red, im->green, im->blue, im);
++}
++
++void gdImageGifAnimBeginCtx(gdImagePtr im, gdIOCtx *out, int GlobalCM, int Loops)
++{
++        int B;
++        int RWidth, RHeight;
++        int Resolution;
++        int ColorMapSize;
++	int BitsPerPixel;
++	int Background = 0;
++        int i;
++
++	BitsPerPixel = colorstobpp(im->colorsTotal);
++        ColorMapSize = 1 << BitsPerPixel;
++
++        RWidth = im->sx;
++        RHeight = im->sy;
++
++        Resolution = BitsPerPixel;
++
++        /*
++         * Write the Magic header
++         */
++        gdPutBuf( "GIF89a", 6, out );
++
++        /*
++         * Write out the screen width and height
++         */
++        Putword( RWidth, out );
++        Putword( RHeight, out );
++
++        /*
++         * Indicate that there is a global colour map
++         */
++        B = GlobalCM > 0 ? 0x80 : 0;
++
++        /*
++         * OR in the resolution
++         */
++        B |= (Resolution - 1) << 5;
++
++        /*
++         * OR in the Bits per Pixel
++         */
++        B |= (BitsPerPixel - 1);
++
++        /*
++         * Write it out
++         */
++        gdPutC( B, out );
++
++        /*
++         * Write out the Background colour
++         */
++        gdPutC( Background, out );
++
++        /*
++         * Byte of 0's (future expansion)
++         */
++        gdPutC( 0, out );
++
++        /*
++         * Write out the Global Colour Map
++         */
++	if (GlobalCM > 0)
++		for( i=0; i<ColorMapSize; ++i ) {
++			gdPutC( im->red[i], out );
++			gdPutC( im->green[i], out );
++			gdPutC( im->blue[i], out );
++		}
++	if (Loops >= 0) {
++		gdPutBuf( "!\377\13NETSCAPE2.0\3\1", 16, out );
++		gdPutC( (unsigned char)(Loops & 255), out );
++		gdPutC( (unsigned char)((Loops >> 8) & 255), out );
++		gdPutC( 0, out );
++	}
++}
++
++void gdImageBigGifAnimAddCtx(gdImagePtr im, gdIOCtx *out, int LocalCM, int LeftOfs, int TopOfs, int Delay, int Disposal)
++{
++	int interlace, transparent, BitsPerPixel;
++
++	interlace = im->interlace;
++	transparent = im->transparent;
++
++	BitsPerPixel = colorstobpp(im->colorsTotal);
++	/* Clear any old values in statics strewn through the GIF code */
++	init_statics();
++	/* All set, let's do it. */
++	GIFAnimEncode(
++		out, im->sx, im->sy, LeftOfs, TopOfs, interlace, transparent,
++		Delay, Disposal, BitsPerPixel,
++		LocalCM > 0 ? im->red : 0, im->green, im->blue, im);
++}
++
++void gdImageGifAnimEndCtx(gdIOCtx *out)
++{
++        /*
++         * Write the GIF file terminator
++         */
++        gdPutC( ';', out );
++}
++
++
++static int
++colorstobpp(int colors)
++{
++    int bpp = 0;
++
++    if ( colors <= 2 )
++        bpp = 1;
++    else if ( colors <= 4 )
++        bpp = 2;
++    else if ( colors <= 8 )
++        bpp = 3;
++    else if ( colors <= 16 )
++        bpp = 4;
++    else if ( colors <= 32 )
++        bpp = 5;
++    else if ( colors <= 64 )
++        bpp = 6;
++    else if ( colors <= 128 )
++        bpp = 7;
++    else if ( colors <= 256 )
++        bpp = 8;
++    return bpp;
++    }
++
++/*****************************************************************************
++ *
++ * GIFENCODE.C    - GIF Image compression interface
++ *
++ * GIFEncode( FName, GHeight, GWidth, GInterlace, Background, Transparent,
++ *            BitsPerPixel, Red, Green, Blue, gdImagePtr )
++ *
++ *****************************************************************************/
++
++#define TRUE 1
++#define FALSE 0
++
++static int Width, Height;
++static int curx, cury;
++static long CountDown;
++static int Pass = 0;
++static int Interlace;
++
++/*
++ * Bump the 'curx' and 'cury' to point to the next pixel
++ */
++static void
++BumpPixel(void)
++{
++        /*
++         * Bump the current X position
++         */
++        ++curx;
++
++        /*
++         * If we are at the end of a scan line, set curx back to the beginning
++         * If we are interlaced, bump the cury to the appropriate spot,
++         * otherwise, just increment it.
++         */
++        if( curx == Width ) {
++                curx = 0;
++
++                if( !Interlace )
++                        ++cury;
++                else {
++                     switch( Pass ) {
++
++                       case 0:
++                          cury += 8;
++                          if( cury >= Height ) {
++                                ++Pass;
++                                cury = 4;
++                          }
++                          break;
++
++                       case 1:
++                          cury += 8;
++                          if( cury >= Height ) {
++                                ++Pass;
++                                cury = 2;
++                          }
++                          break;
++
++                       case 2:
++                          cury += 4;
++                          if( cury >= Height ) {
++                             ++Pass;
++                             cury = 1;
++                          }
++                          break;
++
++                       case 3:
++                          cury += 2;
++                          break;
++                        }
++                }
++        }
++}
++
++/*
++ * Return the next pixel from the image
++ */
++static int
++GIFNextPixel(gdImagePtr im)
++{
++        int r;
++
++        if( CountDown == 0 )
++                return EOF;
++
++        --CountDown;
++
++        r = gdImageGetPixel(im, curx, cury);
++
++        BumpPixel();
++
++        return r;
++}
++
++/* public */
++
++static void
++GIFEncode(gdIOCtx *fp, int GWidth, int GHeight, int GInterlace, int Background, int Transparent, int BitsPerPixel, int *Red, int *Green, int *Blue, gdImagePtr im)
++{
++        int B;
++        int RWidth, RHeight;
++        int LeftOfs, TopOfs;
++        int Resolution;
++        int ColorMapSize;
++        int InitCodeSize;
++        int i;
++
++        Interlace = GInterlace;
++
++        ColorMapSize = 1 << BitsPerPixel;
++
++        RWidth = Width = GWidth;
++        RHeight = Height = GHeight;
++        LeftOfs = TopOfs = 0;
++
++        Resolution = BitsPerPixel;
++
++        /*
++         * Calculate number of bits we are expecting
++         */
++        CountDown = (long)Width * (long)Height;
++
++        /*
++         * Indicate which pass we are on (if interlace)
++         */
++        Pass = 0;
++
++        /*
++         * The initial code size
++         */
++        if( BitsPerPixel <= 1 )
++                InitCodeSize = 2;
++        else
++                InitCodeSize = BitsPerPixel;
++
++        /*
++         * Set up the current x and y position
++         */
++        curx = cury = 0;
++
++        /*
++         * Write the Magic header
++         */
++        gdPutBuf( Transparent < 0 ? "GIF87a" : "GIF89a", 6, fp );
++
++        /*
++         * Write out the screen width and height
++         */
++        Putword( RWidth, fp );
++        Putword( RHeight, fp );
++
++        /*
++         * Indicate that there is a global colour map
++         */
++        B = 0x80;       /* Yes, there is a color map */
++
++        /*
++         * OR in the resolution
++         */
++        B |= (Resolution - 1) << 5;
++
++        /*
++         * OR in the Bits per Pixel
++         */
++        B |= (BitsPerPixel - 1);
++
++        /*
++         * Write it out
++         */
++        gdPutC( B, fp );
++
++        /*
++         * Write out the Background colour
++         */
++        gdPutC( Background, fp );
++
++        /*
++         * Byte of 0's (future expansion)
++         */
++        gdPutC( 0, fp );
++
++        /*
++         * Write out the Global Colour Map
++         */
++        for( i=0; i<ColorMapSize; ++i ) {
++                gdPutC( Red[i], fp );
++                gdPutC( Green[i], fp );
++                gdPutC( Blue[i], fp );
++        }
++
++	/*
++	 * Write out extension for transparent colour index, if necessary.
++	 */
++	if ( Transparent >= 0 ) {
++	    gdPutC( '!', fp );
++	    gdPutC( 0xf9, fp );
++	    gdPutC( 4, fp );
++	    gdPutC( 1, fp );
++	    gdPutC( 0, fp );
++	    gdPutC( 0, fp );
++	    gdPutC( (unsigned char) Transparent, fp );
++	    gdPutC( 0, fp );
++	}
++
++        /*
++         * Write an Image separator
++         */
++        gdPutC( ',', fp );
++
++        /*
++         * Write the Image header
++         */
++
++        Putword( LeftOfs, fp );
++        Putword( TopOfs, fp );
++        Putword( Width, fp );
++        Putword( Height, fp );
++
++        /*
++         * Write out whether or not the image is interlaced
++         */
++        if( Interlace )
++                gdPutC( 0x40, fp );
++        else
++                gdPutC( 0x00, fp );
++
++        /*
++         * Write out the initial code size
++         */
++        gdPutC( InitCodeSize, fp );
++
++        /*
++         * Go and actually compress the data
++         */
++        GIFcompress( InitCodeSize+1, fp, im );
++
++        /*
++         * Write out a Zero-length packet (to end the series)
++         */
++        gdPutC( 0, fp );
++
++        /*
++         * Write the GIF file terminator
++         */
++        gdPutC( ';', fp );
++}
++
++static void
++GIFAnimEncode(gdIOCtx *fp, int IWidth, int IHeight, int LeftOfs, int TopOfs, int GInterlace, int Transparent, int Delay, int Disposal, int BitsPerPixel, int *Red, int *Green, int *Blue, gdImagePtr im)
++{
++        int ColorMapSize;
++        int InitCodeSize;
++        int i;
++
++	if (LeftOfs < 0) LeftOfs = 0;
++	if (TopOfs < 0) TopOfs = 0;
++	if (Delay < 0) Delay = 100;
++	if (Disposal < 0) Disposal = 2;
++
++        Interlace = GInterlace;
++
++        ColorMapSize = 1 << BitsPerPixel;
++
++	Width = IWidth;
++        Height = IHeight;
++
++        /*
++         * Calculate number of bits we are expecting
++         */
++        CountDown = (long)Width * (long)Height;
++
++        /*
++         * Indicate which pass we are on (if interlace)
++         */
++        Pass = 0;
++
++        /*
++         * The initial code size
++         */
++        if( BitsPerPixel <= 1 )
++                InitCodeSize = 2;
++        else
++                InitCodeSize = BitsPerPixel;
++
++        /*
++         * Set up the current x and y position
++         */
++        curx = cury = 0;
++
++	/*
++	 * Write out extension for image animation and looping
++	 */
++	gdPutC( '!', fp );
++	gdPutC( 0xf9, fp );
++	gdPutC( 4, fp );
++	gdPutC( (Transparent >= 0 ? 1 : 0)
++		| (Disposal << 2), fp );
++	gdPutC( (unsigned char)(Delay & 255), fp );
++	gdPutC( (unsigned char)((Delay >> 8) & 255), fp );
++	gdPutC( (unsigned char) Transparent, fp );
++	gdPutC( 0, fp );
++
++        /*
++         * Write an Image separator
++         */
++        gdPutC( ',', fp );
++
++        /*
++         * Write the Image header
++         */
++
++        Putword( LeftOfs, fp );
++        Putword( TopOfs, fp );
++        Putword( Width, fp );
++        Putword( Height, fp );
++
++        /*
++         * Write out whether or not the image is interlaced
++	 * and if it includes local colour map.
++         */
++	gdPutC( (Interlace ? 0x40 : 0)
++		| (Red ? 0x80 : 0)
++		| (Red ? BitsPerPixel - 1 : 0), fp );
++
++        /*
++         * Write out the Local Colour Map
++         */
++	if (Red)
++		for( i=0; i<ColorMapSize; ++i ) {
++			gdPutC( Red[i], fp );
++			gdPutC( Green[i], fp );
++			gdPutC( Blue[i], fp );
++		}
++
++        /*
++         * Write out the initial code size
++         */
++        gdPutC( InitCodeSize, fp );
++
++        /*
++         * Go and actually compress the data
++         */
++        GIFcompress( InitCodeSize+1, fp, im );
++
++        /*
++         * Write out a Zero-length packet (to end the series)
++         */
++        gdPutC( 0, fp );
++}
++
++/* Write out a word to the GIF file */
++/*static void */
++/*Putword(int w, gdIOCtx *fp) */
++/*{ */
++/*        fputc( w & 0xff, fp ); */
++/*        fputc( (w / 256) & 0xff, fp ); */
++/*} */
++
++#define GIFBITS 12
++
++/*-----------------------------------------------------------------------
++ *
++ * miGIF Compression - mouse and ivo's GIF-compatible compression
++ *
++ *          -run length encoding compression routines-
++ *
++ * Copyright (C) 1998 Hutchison Avenue Software Corporation
++ *               http://www.hasc.com
++ *               info@hasc.com
++ *
++ * 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." The Hutchison Avenue 
++ * Software Corporation disclaims all warranties, either express or implied, 
++ * including but not limited to implied warranties of merchantability and 
++ * fitness for a particular purpose, with respect to this code and accompanying
++ * documentation. 
++ * 
++ * The miGIF compression routines do not, strictly speaking, generate files 
++ * conforming to the GIF spec, since the image data is not LZW-compressed 
++ * (this is the point: in order to avoid transgression of the Unisys patent 
++ * on the LZW algorithm.)  However, miGIF generates data streams that any 
++ * reasonably sane LZW decompresser will decompress to what we want.
++ *
++ * miGIF compression uses run length encoding. It compresses horizontal runs 
++ * of pixels of the same color. This type of compression gives good results
++ * on images with many runs, for example images with lines, text and solid 
++ * shapes on a solid-colored background. It gives little or no compression 
++ * on images with few runs, for example digital or scanned photos.
++ *
++ *                               der Mouse
++ *                      mouse@rodents.montreal.qc.ca
++ *            7D C8 61 52 5D E7 2D 39  4E F1 31 3E E8 B3 27 4B
++ *
++ *                             ivo@hasc.com
++ *
++ * The Graphics Interchange Format(c) is the Copyright property of
++ * CompuServe Incorporated.  GIF(sm) is a Service Mark property of
++ * CompuServe Incorporated.
++ *
++ */
++
++static int rl_pixel;
++static int rl_basecode;
++static int rl_count;
++static int rl_table_pixel;
++static int rl_table_max;
++static int just_cleared;
++static int out_bits;
++static int out_bits_init;
++static int out_count;
++static int out_bump;
++static int out_bump_init;
++static int out_clear;
++static int out_clear_init;
++static int max_ocodes;
++static int code_clear;
++static int code_eof;
++static unsigned int obuf;
++static int obits;
++static gdIOCtx *ofile;
++static unsigned char oblock[256];
++static int oblen;
++
++/* Used only when debugging GIF compression code */
++/* #define DEBUGGING_ENVARS */
++
++#ifdef DEBUGGING_ENVARS
++
++static int verbose_set = 0;
++static int verbose;
++#define VERBOSE (verbose_set?verbose:set_verbose())
++
++static int set_verbose(void)
++{
++ verbose = !!getenv("GIF_VERBOSE");
++ verbose_set = 1;
++ return(verbose);
++}
++
++#else
++
++#define VERBOSE 0
++
++#endif
++
++
++static const char *binformat(unsigned int v, int nbits)
++{
++ static char bufs[8][64];
++ static int bhand = 0;
++ unsigned int bit;
++ int bno;
++ char *bp;
++
++ bhand --;
++ if (bhand < 0) bhand = (sizeof(bufs)/sizeof(bufs[0]))-1;
++ bp = &bufs[bhand][0];
++ for (bno=nbits-1,bit=1U<<bno;bno>=0;bno--,bit>>=1)
++  { *bp++ = (v & bit) ? '1' : '0';
++    if (((bno&3) == 0) && (bno != 0)) *bp++ = '.';
++  }
++ *bp = '\0';
++ return(&bufs[bhand][0]);
++}
++
++static void write_block(void)
++{
++ int i;
++
++ if (VERBOSE)
++  { printf("write_block %d:",oblen);
++    for (i=0;i<oblen;i++) printf(" %02x",oblock[i]);
++    printf("\n");
++  }
++ gdPutC(oblen,ofile);
++ gdPutBuf(&oblock[0],oblen,ofile);
++ oblen = 0;
++}
++
++static void block_out(unsigned char c)
++{
++ if (VERBOSE) printf("block_out %s\n",binformat(c,8));
++ oblock[oblen++] = c;
++ if (oblen >= 255) write_block();
++}
++
++static void block_flush(void)
++{
++ if (VERBOSE) printf("block_flush\n");
++ if (oblen > 0) write_block();
++}
++
++static void output(int val)
++{
++ if (VERBOSE) printf("output %s [%s %d %d]\n",binformat(val,out_bits),binformat(obuf,obits),obits,out_bits);
++ obuf |= val << obits;
++ obits += out_bits;
++ while (obits >= 8)
++  { block_out(obuf&0xff);
++    obuf >>= 8;
++    obits -= 8;
++  }
++ if (VERBOSE) printf("output leaving [%s %d]\n",binformat(obuf,obits),obits);
++}
++
++static void output_flush(void)
++{
++ if (VERBOSE) printf("output_flush\n");
++ if (obits > 0) block_out(obuf);
++ block_flush();
++}
++
++static void did_clear(void)
++{
++ if (VERBOSE) printf("did_clear\n");
++ out_bits = out_bits_init;
++ out_bump = out_bump_init;
++ out_clear = out_clear_init;
++ out_count = 0;
++ rl_table_max = 0;
++ just_cleared = 1;
++}
++
++static void output_plain(int c)
++{
++ if (VERBOSE) printf("output_plain %s\n",binformat(c,out_bits));
++ just_cleared = 0;
++ output(c);
++ out_count ++;
++ if (out_count >= out_bump)
++  { out_bits ++;
++    out_bump += 1 << (out_bits - 1);
++  }
++ if (out_count >= out_clear)
++  { output(code_clear);
++    did_clear();
++  }
++}
++
++static unsigned int isqrt(unsigned int x)
++{
++ unsigned int r;
++ unsigned int v;
++
++ if (x < 2) return(x);
++ for (v=x,r=1;v;v>>=2,r<<=1) ;
++ while (1)
++  { v = ((x / r) + r) / 2;
++    if ((v == r) || (v == r+1)) return(r);
++    r = v;
++  }
++}
++
++static unsigned int compute_triangle_count(unsigned int count, unsigned int nrepcodes)
++{
++ unsigned int perrep;
++ unsigned int cost;
++
++ cost = 0;
++ perrep = (nrepcodes * (nrepcodes+1)) / 2;
++ while (count >= perrep)
++  { cost += nrepcodes;
++    count -= perrep;
++  }
++ if (count > 0)
++  { unsigned int n;
++    n = isqrt(count);
++    while ((n*(n+1)) >= 2*count) n --;
++    while ((n*(n+1)) < 2*count) n ++;
++    cost += n;
++  }
++ return(cost);
++}
++
++static void max_out_clear(void)
++{
++ out_clear = max_ocodes;
++}
++
++static void reset_out_clear(void)
++{
++ out_clear = out_clear_init;
++ if (out_count >= out_clear)
++  { output(code_clear);
++    did_clear();
++  }
++}
++
++static void rl_flush_fromclear(int count)
++{
++ int n;
++
++ if (VERBOSE) printf("rl_flush_fromclear %d\n",count);
++ max_out_clear();
++ rl_table_pixel = rl_pixel;
++ n = 1;
++ while (count > 0)
++  { if (n == 1)
++     { rl_table_max = 1;
++       output_plain(rl_pixel);
++       count --;
++     }
++    else if (count >= n)
++     { rl_table_max = n;
++       output_plain(rl_basecode+n-2);
++       count -= n;
++     }
++    else if (count == 1)
++     { rl_table_max ++;
++       output_plain(rl_pixel);
++       count = 0;
++     }
++    else
++     { rl_table_max ++;
++       output_plain(rl_basecode+count-2);
++       count = 0;
++     }
++    if (out_count == 0) n = 1; else n ++;
++  }
++ reset_out_clear();
++ if (VERBOSE) printf("rl_flush_fromclear leaving table_max=%d\n",rl_table_max);
++}
++
++static void rl_flush_clearorrep(int count)
++{
++ int withclr;
++
++ if (VERBOSE) printf("rl_flush_clearorrep %d\n",count);
++ withclr = 1 + compute_triangle_count(count,max_ocodes);
++ if (withclr < count)
++  { output(code_clear);
++    did_clear();
++    rl_flush_fromclear(count);
++  }
++ else
++  { for (;count>0;count--) output_plain(rl_pixel);
++  }
++}
++
++static void rl_flush_withtable(int count)
++{
++ int repmax;
++ int repleft;
++ int leftover;
++
++ if (VERBOSE) printf("rl_flush_withtable %d\n",count);
++ repmax = count / rl_table_max;
++ leftover = count % rl_table_max;
++ repleft = (leftover ? 1 : 0);
++ if (out_count+repmax+repleft > max_ocodes)
++  { repmax = max_ocodes - out_count;
++    leftover = count - (repmax * rl_table_max);
++    repleft = 1 + compute_triangle_count(leftover,max_ocodes);
++  }
++ if (VERBOSE) printf("rl_flush_withtable repmax=%d leftover=%d repleft=%d\n",repmax,leftover,repleft);
++ if (1+compute_triangle_count(count,max_ocodes) < repmax+repleft)
++  { output(code_clear);
++    did_clear();
++    rl_flush_fromclear(count);
++    return;
++  }
++ max_out_clear();
++ for (;repmax>0;repmax--) output_plain(rl_basecode+rl_table_max-2);
++ if (leftover)
++  { if (just_cleared)
++     { rl_flush_fromclear(leftover);
++     }
++    else if (leftover == 1)
++     { output_plain(rl_pixel);
++     }
++    else
++     { output_plain(rl_basecode+leftover-2);
++     }
++  }
++ reset_out_clear();
++}
++
++static void rl_flush(void)
++{
++ /* UNUSED int table_reps; */
++ /* UNUSED int table_extra; */
++
++ if (VERBOSE) printf("rl_flush [ %d %d\n",rl_count,rl_pixel);
++ if (rl_count == 1)
++  { output_plain(rl_pixel);
++    rl_count = 0;
++    if (VERBOSE) printf("rl_flush ]\n");
++    return;
++  }
++ if (just_cleared)
++  { rl_flush_fromclear(rl_count);
++  }
++ else if ((rl_table_max < 2) || (rl_table_pixel != rl_pixel))
++  { rl_flush_clearorrep(rl_count);
++  }
++ else
++  { rl_flush_withtable(rl_count);
++  }
++ if (VERBOSE) printf("rl_flush ]\n");
++ rl_count = 0;
++}
++
++static void GIFcompress(int init_bits, gdIOCtx *outfile, gdImagePtr im)
++{
++ int c;
++
++ ofile = outfile;
++ obuf = 0;
++ obits = 0;
++ oblen = 0;
++ code_clear = 1 << (init_bits - 1);
++ code_eof = code_clear + 1;
++ rl_basecode = code_eof + 1;
++ out_bump_init = (1 << (init_bits - 1)) - 1;
++ /* for images with a lot of runs, making out_clear_init larger will
++    give better compression. */ 
++ out_clear_init = (init_bits <= 3) ? 9 : (out_bump_init-1);
++#ifdef DEBUGGING_ENVARS
++  { const char *ocienv;
++    ocienv = getenv("GIF_OUT_CLEAR_INIT");
++    if (ocienv)
++     { out_clear_init = atoi(ocienv);
++       if (VERBOSE) printf("[overriding out_clear_init to %d]\n",out_clear_init);
++     }
++  }
++#endif
++ out_bits_init = init_bits;
++ max_ocodes = (1 << GIFBITS) - ((1 << (out_bits_init - 1)) + 3);
++ did_clear();
++ output(code_clear);
++ rl_count = 0;
++ while (1)
++  { c = GIFNextPixel(im);
++    if ((rl_count > 0) && (c != rl_pixel)) rl_flush();
++    if (c == EOF) break;
++    if (rl_pixel == c)
++     { rl_count ++;
++     }
++    else
++     { rl_pixel = c;
++       rl_count = 1;
++     }
++  }
++ output(code_eof);
++ output_flush();
++}
++
++/*-----------------------------------------------------------------------
++ *
++ * End of miGIF section  - See copyright notice at start of section.
++ *
++ *-----------------------------------------------------------------------
++*/
++
++/******************************************************************************
++ *
++ * GIF Specific routines
++ *
++ ******************************************************************************/
++
++/*
++ * Number of characters so far in this 'packet'
++ */
++static int a_count;
++
++/*
++ * Set up the 'byte output' routine
++ */
++
++/* UNUSED
++* static void
++* char_init(void)
++* {
++*        a_count = 0;
++* }
++*/
++
++/*
++ * Define the storage for the packet accumulator
++ */
++
++/* UNUSED static char accum[ 256 ]; */
++
++static void init_statics(void) {
++	/* Some of these are properly initialized later. What I'm doing
++		here is making sure code that depends on C's initialization
++		of statics doesn't break when the code gets called more
++		than once. */
++	Width = 0;
++	Height = 0;
++	curx = 0;
++	cury = 0;
++	CountDown = 0;
++	Pass = 0;
++	Interlace = 0;
++	a_count = 0;
++}
++
++
++/* +-------------------------------------------------------------------+ */
++/* | Copyright 1990, 1991, 1993, David Koblas.  (koblas@netcom.com)    | */
++/* |   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.           | */
++/* +-------------------------------------------------------------------+ */
++
diff --git a/graphics/php4-gd/files/patch-libgd::gd_gif_out.c b/graphics/php4-gd/files/patch-libgd::gd_gif_out.c
new file mode 100644
index 0000000..6823e9d
--- /dev/null
+++ b/graphics/php4-gd/files/patch-libgd::gd_gif_out.c
@@ -0,0 +1,73 @@
+--- libgd/gd_gif_out.c.orig	Sat Jun 28 15:47:56 2003
++++ libgd/gd_gif_out.c	Sat Jun 28 16:07:33 2003
+@@ -0,0 +1,70 @@
++#include <stdio.h>
++#include <math.h>
++#include <string.h>
++#include <stdlib.h>
++#include "gd.h"
++
++/*
++** Wrapper functions for GIF output.
++*/
++
++void gdImageGifToSink(gdImagePtr im, gdSinkPtr outSink)
++{
++        gdIOCtx   *out = gdNewSSCtx(NULL,outSink);
++        gdImageGifCtx(im, out);
++        out->gd_free(out);
++}
++
++void gdImageGifCtx(gdImagePtr im, gdIOCtx *out)
++{
++#ifdef LZW_LICENCED
++	gdImageLzwCtx(im, out);
++#else
++        gdImageBigGifCtx(im, out);
++#endif
++}
++
++void gdImageGif(gdImagePtr im, FILE *outFile)
++{
++#ifdef LZW_LICENCED
++        gdImageLzw(im, outFile);
++#else
++        gdImageBigGif(im, outFile);
++#endif
++}
++
++void* gdImageGifPtr(gdImagePtr im, int *size)
++{
++#ifdef LZW_LICENCED
++        return gdImageLzwPtr(im, size);
++#else
++        return gdImageBigGifPtr(im, size);
++#endif
++}
++
++void gdImageGifAnimAddCtx(gdImagePtr im, gdIOCtx *out, int LocalCM, int LeftOfs, int TopOfs, int Delay, int Disposal)
++{
++#ifdef LZW_LICENCED
++	gdImageLzwAnimAddCtx(im, out, LocalCM, LeftOfs, TopOfs, Delay, Disposal);
++#else
++	gdImageBigGifAnimAddCtx(im, out, LocalCM, LeftOfs, TopOfs, Delay, Disposal);
++#endif
++}
++
++void gdImageGifAnimAdd(gdImagePtr im, FILE *outFile, int LocalCM, int LeftOfs, int TopOfs, int Delay, int Disposal)
++{
++#ifdef LZW_LICENCED
++	gdImageLzwAnimAdd(im, outFile, LocalCM, LeftOfs, TopOfs, Delay, Disposal);
++#else
++	gdImageBigGifAnimAdd(im, outFile, LocalCM, LeftOfs, TopOfs, Delay, Disposal);
++#endif
++}
++
++void *gdImageGifAnimAddPtr(gdImagePtr im, int *size, int LocalCM, int LeftOfs, int TopOfs, int Delay, int Disposal)
++{
++#ifdef LZW_LICENCED
++	return gdImageLzwAnimAddPtr(im, size, LocalCM, LeftOfs, TopOfs, Delay, Disposal);
++#else
++	return gdImageBigGifAnimAddPtr(im, size, LocalCM, LeftOfs, TopOfs, Delay, Disposal);
++#endif
++}
diff --git a/graphics/php4-gd/files/patch-libgd::gd_lzw_out.c b/graphics/php4-gd/files/patch-libgd::gd_lzw_out.c
new file mode 100644
index 0000000..ffe1470
--- /dev/null
+++ b/graphics/php4-gd/files/patch-libgd::gd_lzw_out.c
@@ -0,0 +1,939 @@
+--- libgd/gd_lzw_out.c.orig	Sat Jun 28 15:47:56 2003
++++ libgd/gd_lzw_out.c	Sat Jun 28 16:01:04 2003
+@@ -0,0 +1,936 @@
++#ifdef HAVE_MALLOC_H
++ #include <malloc.h>
++#endif
++#include <stdio.h>
++#include <math.h>
++#include <string.h>
++#include <stdlib.h>
++#include "gd.h"
++
++/* Code drawn from ppmtogif.c, from the pbmplus package
++**
++** Based on GIFENCOD by David Rowley <mgardi@watdscu.waterloo.edu>. A
++** Lempel-Zim compression based on "compress".
++**
++** Modified by Marcel Wijkstra <wijkstra@fwi.uva.nl>
++**
++** 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.
++*/
++
++/*
++ * a code_int must be able to hold 2**GIFBITS values of type int, and also -1
++ */
++typedef int             code_int;
++
++#ifdef SIGNED_COMPARE_SLOW
++typedef unsigned long int count_int;
++typedef unsigned short int count_short;
++#else /*SIGNED_COMPARE_SLOW*/
++typedef long int          count_int;
++#endif /*SIGNED_COMPARE_SLOW*/
++
++static int colorstobpp(int colors);
++static void BumpPixel (void);
++static int GIFNextPixel (gdImagePtr im);
++static void GIFEncode (gdIOCtx *fp, int GWidth, int GHeight, int GInterlace, int Background, int Transparent, int BitsPerPixel, int *Red, int *Green, int *Blue, gdImagePtr im);
++static void GIFAnimEncode(gdIOCtx *fp, int IWidth, int IHeight, int LeftOfs, int TopOfs, int GInterlace, int Transparent, int Delay, int Disposal, int BitsPerPixel, int *Red, int *Green, int *Blue, gdImagePtr im);
++/*static void Putword (int w, gdIOCtx *fp); */
++static void compress (int init_bits, gdIOCtx *outfile, gdImagePtr im);
++static void output (code_int code);
++static void cl_block (void);
++static void cl_hash (register count_int hsize);
++static void char_init (void);
++static void char_out (int c);
++static void flush_char (void);
++/* Allows for reuse */
++static void init_statics(void);
++
++void gdImageLzwCtx(gdImagePtr im, gdIOCtx *out)
++{
++	int interlace, transparent, BitsPerPixel;
++
++	interlace = im->interlace;
++	transparent = im->transparent;
++
++	BitsPerPixel = colorstobpp(im->colorsTotal);
++	/* Clear any old values in statics strewn through the GIF code */
++	init_statics();
++	/* All set, let's do it. */
++	GIFEncode(
++		out, im->sx, im->sy, interlace, 0, transparent, BitsPerPixel,
++		im->red, im->green, im->blue, im);
++}
++
++void gdImageLzw(gdImagePtr im, FILE *outFile)
++{
++        gdIOCtx   *out = gdNewFileCtx(outFile);
++        gdImageLzwCtx(im, out);
++        out->gd_free(out);
++}
++
++void* gdImageLzwPtr(gdImagePtr im, int *size)
++{
++	void	*rv;
++        gdIOCtx   *out = gdNewDynamicCtx(2048, NULL);
++        gdImageLzwCtx(im, out);
++        rv = gdDPExtractData(out,size);
++	out->gd_free(out);
++	return rv;
++}
++
++void gdImageLzwAnimAddCtx(gdImagePtr im, gdIOCtx *out, int LocalCM, int LeftOfs, int TopOfs, int Delay, int Disposal)
++{
++	int interlace, transparent, BitsPerPixel;
++
++	interlace = im->interlace;
++	transparent = im->transparent;
++
++	BitsPerPixel = colorstobpp(im->colorsTotal);
++	/* Clear any old values in statics strewn through the GIF code */
++	init_statics();
++	/* All set, let's do it. */
++	GIFAnimEncode(
++		out, im->sx, im->sy, LeftOfs, TopOfs, interlace, transparent,
++		Delay, Disposal, BitsPerPixel,
++		LocalCM > 0 ? im->red : 0, im->green, im->blue, im);
++}
++
++void gdImageLzwAnimAdd(gdImagePtr im, FILE *outFile, int LocalCM, int LeftOfs, int TopOfs, int Delay, int Disposal)
++{
++        gdIOCtx   *out = gdNewFileCtx(outFile);
++        gdImageLzwAnimAddCtx(im, out, LocalCM, LeftOfs, TopOfs, Delay, Disposal);
++        out->gd_free(out);
++}
++
++void* gdImageLzwAnimAddPtr(gdImagePtr im, int *size, int LocalCM, int LeftOfs, int TopOfs, int Delay, int Disposal)
++{
++	void	*rv;
++        gdIOCtx   *out = gdNewDynamicCtx(2048, NULL);
++        gdImageLzwAnimAddCtx(im, out, LocalCM, LeftOfs, TopOfs, Delay, Disposal);
++        rv = gdDPExtractData(out,size);
++	out->gd_free(out);
++	return rv;
++}
++
++
++
++static int
++colorstobpp(int colors)
++{
++    int bpp = 0;
++
++    if ( colors <= 2 )
++        bpp = 1;
++    else if ( colors <= 4 )
++        bpp = 2;
++    else if ( colors <= 8 )
++        bpp = 3;
++    else if ( colors <= 16 )
++        bpp = 4;
++    else if ( colors <= 32 )
++        bpp = 5;
++    else if ( colors <= 64 )
++        bpp = 6;
++    else if ( colors <= 128 )
++        bpp = 7;
++    else if ( colors <= 256 )
++        bpp = 8;
++    return bpp;
++    }
++
++/*****************************************************************************
++ *
++ * GIFENCODE.C    - GIF Image compression interface
++ *
++ * GIFEncode( FName, GHeight, GWidth, GInterlace, Background, Transparent,
++ *            BitsPerPixel, Red, Green, Blue, gdImagePtr )
++ *
++ *****************************************************************************/
++
++#define TRUE 1
++#define FALSE 0
++
++static int Width, Height;
++static int curx, cury;
++static long CountDown;
++static int Pass = 0;
++static int Interlace;
++
++/*
++ * Bump the 'curx' and 'cury' to point to the next pixel
++ */
++static void
++BumpPixel(void)
++{
++        /*
++         * Bump the current X position
++         */
++        ++curx;
++
++        /*
++         * If we are at the end of a scan line, set curx back to the beginning
++         * If we are interlaced, bump the cury to the appropriate spot,
++         * otherwise, just increment it.
++         */
++        if( curx == Width ) {
++                curx = 0;
++
++                if( !Interlace )
++                        ++cury;
++                else {
++                     switch( Pass ) {
++
++                       case 0:
++                          cury += 8;
++                          if( cury >= Height ) {
++                                ++Pass;
++                                cury = 4;
++                          }
++                          break;
++
++                       case 1:
++                          cury += 8;
++                          if( cury >= Height ) {
++                                ++Pass;
++                                cury = 2;
++                          }
++                          break;
++
++                       case 2:
++                          cury += 4;
++                          if( cury >= Height ) {
++                             ++Pass;
++                             cury = 1;
++                          }
++                          break;
++
++                       case 3:
++                          cury += 2;
++                          break;
++                        }
++                }
++        }
++}
++
++/*
++ * Return the next pixel from the image
++ */
++static int
++GIFNextPixel(gdImagePtr im)
++{
++        int r;
++
++        if( CountDown == 0 )
++                return EOF;
++
++        --CountDown;
++
++        r = gdImageGetPixel(im, curx, cury);
++
++        BumpPixel();
++
++        return r;
++}
++
++/* public */
++
++static void
++GIFEncode(gdIOCtx *fp, int GWidth, int GHeight, int GInterlace, int Background, int Transparent, int BitsPerPixel, int *Red, int *Green, int *Blue, gdImagePtr im)
++{
++        int B;
++        int RWidth, RHeight;
++        int LeftOfs, TopOfs;
++        int Resolution;
++        int ColorMapSize;
++        int InitCodeSize;
++        int i;
++
++        Interlace = GInterlace;
++
++        ColorMapSize = 1 << BitsPerPixel;
++
++        RWidth = Width = GWidth;
++        RHeight = Height = GHeight;
++        LeftOfs = TopOfs = 0;
++
++        Resolution = BitsPerPixel;
++
++        /*
++         * Calculate number of bits we are expecting
++         */
++        CountDown = (long)Width * (long)Height;
++
++        /*
++         * Indicate which pass we are on (if interlace)
++         */
++        Pass = 0;
++
++        /*
++         * The initial code size
++         */
++        if( BitsPerPixel <= 1 )
++                InitCodeSize = 2;
++        else
++                InitCodeSize = BitsPerPixel;
++
++        /*
++         * Set up the current x and y position
++         */
++        curx = cury = 0;
++
++        /*
++         * Write the Magic header
++         */
++        gdPutBuf( Transparent < 0 ? "GIF87a" : "GIF89a", 6, fp );
++
++        /*
++         * Write out the screen width and height
++         */
++        Putword( RWidth, fp );
++        Putword( RHeight, fp );
++
++        /*
++         * Indicate that there is a global colour map
++         */
++        B = 0x80;       /* Yes, there is a color map */
++
++        /*
++         * OR in the resolution
++         */
++        B |= (Resolution - 1) << 5;
++
++        /*
++         * OR in the Bits per Pixel
++         */
++        B |= (BitsPerPixel - 1);
++
++        /*
++         * Write it out
++         */
++        gdPutC( B, fp );
++
++        /*
++         * Write out the Background colour
++         */
++        gdPutC( Background, fp );
++
++        /*
++         * Byte of 0's (future expansion)
++         */
++        gdPutC( 0, fp );
++
++        /*
++         * Write out the Global Colour Map
++         */
++        for( i=0; i<ColorMapSize; ++i ) {
++                gdPutC( Red[i], fp );
++                gdPutC( Green[i], fp );
++                gdPutC( Blue[i], fp );
++        }
++
++	/*
++	 * Write out extension for transparent colour index, if necessary.
++	 */
++	if ( Transparent >= 0 ) {
++	    gdPutC( '!', fp );
++	    gdPutC( 0xf9, fp );
++	    gdPutC( 4, fp );
++	    gdPutC( 1, fp );
++	    gdPutC( 0, fp );
++	    gdPutC( 0, fp );
++	    gdPutC( (unsigned char) Transparent, fp );
++	    gdPutC( 0, fp );
++	}
++
++        /*
++         * Write an Image separator
++         */
++        gdPutC( ',', fp );
++
++        /*
++         * Write the Image header
++         */
++
++        Putword( LeftOfs, fp );
++        Putword( TopOfs, fp );
++        Putword( Width, fp );
++        Putword( Height, fp );
++
++        /*
++         * Write out whether or not the image is interlaced
++         */
++        if( Interlace )
++                gdPutC( 0x40, fp );
++        else
++                gdPutC( 0x00, fp );
++
++        /*
++         * Write out the initial code size
++         */
++        gdPutC( InitCodeSize, fp );
++
++        /*
++         * Go and actually compress the data
++         */
++        compress( InitCodeSize+1, fp, im );
++
++        /*
++         * Write out a Zero-length packet (to end the series)
++         */
++        gdPutC( 0, fp );
++
++        /*
++         * Write the GIF file terminator
++         */
++        gdPutC( ';', fp );
++}
++
++static void
++GIFAnimEncode(gdIOCtx *fp, int IWidth, int IHeight, int LeftOfs, int TopOfs, int GInterlace, int Transparent, int Delay, int Disposal, int BitsPerPixel, int *Red, int *Green, int *Blue, gdImagePtr im)
++{
++        int ColorMapSize;
++        int InitCodeSize;
++        int i;
++
++	if (LeftOfs < 0) LeftOfs = 0;
++	if (TopOfs < 0) TopOfs = 0;
++	if (Delay < 0) Delay = 100;
++	if (Disposal < 0) Disposal = 2;
++
++        Interlace = GInterlace;
++
++        ColorMapSize = 1 << BitsPerPixel;
++
++	Width = IWidth;
++        Height = IHeight;
++
++        /*
++         * Calculate number of bits we are expecting
++         */
++        CountDown = (long)Width * (long)Height;
++
++        /*
++         * Indicate which pass we are on (if interlace)
++         */
++        Pass = 0;
++
++        /*
++         * The initial code size
++         */
++        if( BitsPerPixel <= 1 )
++                InitCodeSize = 2;
++        else
++                InitCodeSize = BitsPerPixel;
++
++        /*
++         * Set up the current x and y position
++         */
++        curx = cury = 0;
++
++	/*
++	 * Write out extension for image animation and looping
++	 */
++	gdPutC( '!', fp );
++	gdPutC( 0xf9, fp );
++	gdPutC( 4, fp );
++	gdPutC( (Transparent >= 0 ? 1 : 0)
++		| (Disposal << 2), fp );
++	gdPutC( (unsigned char)(Delay & 255), fp );
++	gdPutC( (unsigned char)((Delay >> 8) & 255), fp );
++	gdPutC( (unsigned char) Transparent, fp );
++	gdPutC( 0, fp );
++
++        /*
++         * Write an Image separator
++         */
++        gdPutC( ',', fp );
++
++        /*
++         * Write the Image header
++         */
++
++        Putword( LeftOfs, fp );
++        Putword( TopOfs, fp );
++        Putword( Width, fp );
++        Putword( Height, fp );
++
++        /*
++         * Write out whether or not the image is interlaced
++	 * and if it includes local colour map.
++         */
++	gdPutC( (Interlace ? 0x40 : 0)
++		| (Red ? 0x80 : 0)
++		| (Red ? BitsPerPixel - 1 : 0), fp );
++
++        /*
++         * Write out the Local Colour Map
++         */
++	if (Red)
++		for( i=0; i<ColorMapSize; ++i ) {
++			gdPutC( Red[i], fp );
++			gdPutC( Green[i], fp );
++			gdPutC( Blue[i], fp );
++		}
++
++        /*
++         * Write out the initial code size
++         */
++        gdPutC( InitCodeSize, fp );
++
++        /*
++         * Go and actually compress the data
++         */
++        compress( InitCodeSize+1, fp, im );
++
++        /*
++         * Write out a Zero-length packet (to end the series)
++         */
++        gdPutC( 0, fp );
++}
++
++/* */
++/* * Write out a word to the GIF file */
++/* */
++/*static void */
++/*Putword(int w, FILE *fp) */
++/*{ */
++/*        fputc( w & 0xff, fp ); */
++/*        fputc( (w / 256) & 0xff, fp ); */
++/*} */
++
++
++/***************************************************************************
++ *
++ *  GIFCOMPR.C       - GIF Image compression routines
++ *
++ *  Lempel-Ziv compression based on 'compress'.  GIF modifications by
++ *  David Rowley (mgardi@watdcsu.waterloo.edu)
++ *
++ ***************************************************************************/
++
++/*
++ * General DEFINEs
++ */
++
++#define GIFBITS    12
++
++#define HSIZE  5003            /* 80% occupancy */
++
++#ifdef NO_UCHAR
++ typedef char   char_type;
++#else /*NO_UCHAR*/
++ typedef        unsigned char   char_type;
++#endif /*NO_UCHAR*/
++
++/*
++ *
++ * GIF Image compression - modified 'compress'
++ *
++ * Based on: compress.c - File compression ala IEEE Computer, June 1984.
++ *
++ * By Authors:  Spencer W. Thomas       (decvax!harpo!utah-cs!utah-gr!thomas)
++ *              Jim McKie               (decvax!mcvax!jim)
++ *              Steve Davies            (decvax!vax135!petsd!peora!srd)
++ *              Ken Turkowski           (decvax!decwrl!turtlevax!ken)
++ *              James A. Woods          (decvax!ihnp4!ames!jaw)
++ *              Joe Orost               (decvax!vax135!petsd!joe)
++ *
++ */
++#include <ctype.h>
++
++#define ARGVAL() (*++(*argv) || (--argc && *++argv))
++
++static int n_bits;                        /* number of bits/code */
++static int maxbits = GIFBITS;                /* user settable max # bits/code */
++static code_int maxcode;                  /* maximum code, given n_bits */
++static code_int maxmaxcode = (code_int)1 << GIFBITS; /* should NEVER generate this code */
++#ifdef COMPATIBLE               /* But wrong! */
++# define MAXCODE(n_bits)        ((code_int) 1 << (n_bits) - 1)
++#else /*COMPATIBLE*/
++# define MAXCODE(n_bits)        (((code_int) 1 << (n_bits)) - 1)
++#endif /*COMPATIBLE*/
++
++static count_int htab [HSIZE];
++static unsigned short codetab [HSIZE];
++#define HashTabOf(i)       htab[i]
++#define CodeTabOf(i)    codetab[i]
++
++static code_int hsize = HSIZE;                 /* for dynamic table sizing */
++
++/*
++ * To save much memory, we overlay the table used by compress() with those
++ * used by decompress().  The tab_prefix table is the same size and type
++ * as the codetab.  The tab_suffix table needs 2**GIFBITS characters.  We
++ * get this from the beginning of htab.  The output stack uses the rest
++ * of htab, and contains characters.  There is plenty of room for any
++ * possible stack (stack used to be 8000 characters).
++ */
++
++#define tab_prefixof(i) CodeTabOf(i)
++#define tab_suffixof(i)        ((char_type*)(htab))[i]
++#define de_stack               ((char_type*)&tab_suffixof((code_int)1<<GIFBITS))
++
++static code_int free_ent = 0;                  /* first unused entry */
++
++/*
++ * block compression parameters -- after all codes are used up,
++ * and compression rate changes, start over.
++ */
++static int clear_flg = 0;
++
++static int offset;
++static long int in_count = 1;            /* length of input */
++static long int out_count = 0;           /* # of codes output (for debugging) */
++
++/*
++ * compress stdin to stdout
++ *
++ * Algorithm:  use open addressing double hashing (no chaining) on the
++ * prefix code / next character combination.  We do a variant of Knuth's
++ * algorithm D (vol. 3, sec. 6.4) along with G. Knott's relatively-prime
++ * secondary probe.  Here, the modular division first probe is gives way
++ * to a faster exclusive-or manipulation.  Also do block compression with
++ * an adaptive reset, whereby the code table is cleared when the compression
++ * ratio decreases, but after the table fills.  The variable-length output
++ * codes are re-sized at this point, and a special CLEAR code is generated
++ * for the decompressor.  Late addition:  construct the table according to
++ * file size for noticeable speed improvement on small files.  Please direct
++ * questions about this implementation to ames!jaw.
++ */
++
++static int g_init_bits;
++static gdIOCtx* g_outfile;
++
++static int ClearCode;
++static int EOFCode;
++
++static void
++compress(int init_bits, gdIOCtx *outfile, gdImagePtr im)
++{
++    register long fcode;
++    register code_int i /* = 0 */;
++    register int c;
++    register code_int ent;
++    register code_int disp;
++    register code_int hsize_reg;
++    register int hshift;
++
++    /*
++     * Set up the globals:  g_init_bits - initial number of bits
++     *                      g_outfile   - pointer to output file
++     */
++    g_init_bits = init_bits;
++    g_outfile = outfile;
++
++    /*
++     * Set up the necessary values
++     */
++    offset = 0;
++    out_count = 0;
++    clear_flg = 0;
++    in_count = 1;
++    maxcode = MAXCODE(n_bits = g_init_bits);
++
++    ClearCode = (1 << (init_bits - 1));
++    EOFCode = ClearCode + 1;
++    free_ent = ClearCode + 2;
++
++    char_init();
++
++    ent = GIFNextPixel( im );
++
++    hshift = 0;
++    for ( fcode = (long) hsize;  fcode < 65536L; fcode *= 2L )
++        ++hshift;
++    hshift = 8 - hshift;                /* set hash code range bound */
++
++    hsize_reg = hsize;
++    cl_hash( (count_int) hsize_reg);            /* clear hash table */
++
++    output( (code_int)ClearCode );
++
++#ifdef SIGNED_COMPARE_SLOW
++    while ( (c = GIFNextPixel( im )) != (unsigned) EOF ) {
++#else /*SIGNED_COMPARE_SLOW*/
++    while ( (c = GIFNextPixel( im )) != EOF ) {  /* } */
++#endif /*SIGNED_COMPARE_SLOW*/
++
++        ++in_count;
++
++        fcode = (long) (((long) c << maxbits) + ent);
++        i = (((code_int)c << hshift) ^ ent);    /* xor hashing */
++
++        if ( HashTabOf (i) == fcode ) {
++            ent = CodeTabOf (i);
++            continue;
++        } else if ( (long)HashTabOf (i) < 0 )      /* empty slot */
++            goto nomatch;
++        disp = hsize_reg - i;           /* secondary hash (after G. Knott) */
++        if ( i == 0 )
++            disp = 1;
++probe:
++        if ( (i -= disp) < 0 )
++            i += hsize_reg;
++
++        if ( HashTabOf (i) == fcode ) {
++            ent = CodeTabOf (i);
++            continue;
++        }
++        if ( (long)HashTabOf (i) > 0 )
++            goto probe;
++nomatch:
++        output ( (code_int) ent );
++        ++out_count;
++        ent = c;
++#ifdef SIGNED_COMPARE_SLOW
++        if ( (unsigned) free_ent < (unsigned) maxmaxcode) {
++#else /*SIGNED_COMPARE_SLOW*/
++        if ( free_ent < maxmaxcode ) {  /* } */
++#endif /*SIGNED_COMPARE_SLOW*/
++            CodeTabOf (i) = free_ent++; /* code -> hashtable */
++            HashTabOf (i) = fcode;
++        } else
++                cl_block();
++    }
++    /*
++     * Put out the final code.
++     */
++    output( (code_int)ent );
++    ++out_count;
++    output( (code_int) EOFCode );
++}
++
++/*****************************************************************
++ * TAG( output )
++ *
++ * Output the given code.
++ * Inputs:
++ *      code:   A n_bits-bit integer.  If == -1, then EOF.  This assumes
++ *              that n_bits =< (long)wordsize - 1.
++ * Outputs:
++ *      Outputs code to the file.
++ * Assumptions:
++ *      Chars are 8 bits long.
++ * Algorithm:
++ *      Maintain a GIFBITS character long buffer (so that 8 codes will
++ * fit in it exactly).  Use the VAX insv instruction to insert each
++ * code in turn.  When the buffer fills up empty it and start over.
++ */
++
++static unsigned long cur_accum = 0;
++static int cur_bits = 0;
++
++static unsigned long masks[] = { 0x0000, 0x0001, 0x0003, 0x0007, 0x000F,
++                                  0x001F, 0x003F, 0x007F, 0x00FF,
++                                  0x01FF, 0x03FF, 0x07FF, 0x0FFF,
++                                  0x1FFF, 0x3FFF, 0x7FFF, 0xFFFF };
++
++static void
++output(code_int code)
++{
++    cur_accum &= masks[ cur_bits ];
++
++    if( cur_bits > 0 )
++        cur_accum |= ((long)code << cur_bits);
++    else
++        cur_accum = code;
++
++    cur_bits += n_bits;
++
++    while( cur_bits >= 8 ) {
++        char_out( (unsigned int)(cur_accum & 0xff) );
++        cur_accum >>= 8;
++        cur_bits -= 8;
++    }
++
++    /*
++     * If the next entry is going to be too big for the code size,
++     * then increase it, if possible.
++     */
++   if ( free_ent > maxcode || clear_flg ) {
++
++            if( clear_flg ) {
++
++                maxcode = MAXCODE (n_bits = g_init_bits);
++                clear_flg = 0;
++
++            } else {
++
++                ++n_bits;
++                if ( n_bits == maxbits )
++                    maxcode = maxmaxcode;
++                else
++                    maxcode = MAXCODE(n_bits);
++            }
++        }
++
++    if( code == EOFCode ) {
++        /*
++         * At EOF, write the rest of the buffer.
++         */
++        while( cur_bits > 0 ) {
++                char_out( (unsigned int)(cur_accum & 0xff) );
++                cur_accum >>= 8;
++                cur_bits -= 8;
++        }
++
++        flush_char();
++
++/*        fflush( g_outfile ); */
++/* */
++/*        if( ferror( g_outfile ) ) */
++/*		return; */
++    }
++}
++
++/*
++ * Clear out the hash table
++ */
++static void
++cl_block (void)             /* table clear for block compress */
++{
++
++        cl_hash ( (count_int) hsize );
++        free_ent = ClearCode + 2;
++        clear_flg = 1;
++
++        output( (code_int)ClearCode );
++}
++
++static void
++cl_hash(register count_int hsize)          /* reset code table */
++                         
++{
++
++        register count_int *htab_p = htab+hsize;
++
++        register long i;
++        register long m1 = -1;
++
++        i = hsize - 16;
++        do {                            /* might use Sys V memset(3) here */
++                *(htab_p-16) = m1;
++                *(htab_p-15) = m1;
++                *(htab_p-14) = m1;
++                *(htab_p-13) = m1;
++                *(htab_p-12) = m1;
++                *(htab_p-11) = m1;
++                *(htab_p-10) = m1;
++                *(htab_p-9) = m1;
++                *(htab_p-8) = m1;
++                *(htab_p-7) = m1;
++                *(htab_p-6) = m1;
++                *(htab_p-5) = m1;
++                *(htab_p-4) = m1;
++                *(htab_p-3) = m1;
++                *(htab_p-2) = m1;
++                *(htab_p-1) = m1;
++                htab_p -= 16;
++        } while ((i -= 16) >= 0);
++
++        for ( i += 16; i > 0; --i )
++                *--htab_p = m1;
++}
++
++/******************************************************************************
++ *
++ * GIF Specific routines
++ *
++ ******************************************************************************/
++
++/*
++ * Number of characters so far in this 'packet'
++ */
++static int a_count;
++
++/*
++ * Set up the 'byte output' routine
++ */
++static void
++char_init(void)
++{
++        a_count = 0;
++}
++
++/*
++ * Define the storage for the packet accumulator
++ */
++static char accum[ 256 ];
++
++/*
++ * Add a character to the end of the current packet, and if it is 254
++ * characters, flush the packet to disk.
++ */
++static void
++char_out(int c)
++{
++        accum[ a_count++ ] = c;
++        if( a_count >= 254 )
++                flush_char();
++}
++
++/*
++ * Flush the packet to disk, and reset the accumulator
++ */
++static void
++flush_char(void)
++{
++        if( a_count > 0 ) {
++                gdPutC( a_count, g_outfile );
++                gdPutBuf( accum, a_count, g_outfile );
++                a_count = 0;
++        }
++}
++
++static void init_statics(void) {
++	/* Some of these are properly initialized later. What I'm doing
++		here is making sure code that depends on C's initialization
++		of statics doesn't break when the code gets called more
++		than once. */
++	Width = 0;
++	Height = 0;
++	curx = 0;
++	cury = 0;
++	CountDown = 0;
++	Pass = 0;
++	Interlace = 0;
++	a_count = 0;
++	cur_accum = 0;
++	cur_bits = 0;
++	g_init_bits = 0;
++	g_outfile = 0;
++	ClearCode = 0;
++	EOFCode = 0;
++	free_ent = 0;
++	clear_flg = 0;
++	offset = 0;
++	in_count = 1;
++	out_count = 0;	
++	hsize = HSIZE;
++	n_bits = 0;
++	maxbits = GIFBITS;
++	maxcode = 0;
++	maxmaxcode = (code_int)1 << GIFBITS;
++}
++
++
++/* +-------------------------------------------------------------------+ */
++/* | Copyright 1990, 1991, 1993, David Koblas.  (koblas@netcom.com)    | */
++/* |   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.           | */
++/* +-------------------------------------------------------------------+ */
diff --git a/graphics/php4-gd/files/patch-php_gd.h b/graphics/php4-gd/files/patch-php_gd.h
new file mode 100644
index 0000000..1b3e4f4
--- /dev/null
+++ b/graphics/php4-gd/files/patch-php_gd.h
@@ -0,0 +1,21 @@
+--- php_gd.h.orig	Mon Mar 31 10:49:30 2003
++++ php_gd.h	Sat Jun 28 15:47:56 2003
+@@ -40,6 +40,8 @@
+ #define PHP_GDIMG_TYPE_GD       8
+ #define PHP_GDIMG_TYPE_GD2      9
+ #define PHP_GDIMG_TYPE_GD2PART 10
++#define PHP_GDIMG_TYPE_GIFANIMBEGIN 11
++#define PHP_GDIMG_TYPE_GIFANIMADD 12
+ 
+ #ifdef PHP_WIN32
+ #define PHP_GD_API __declspec(dllexport)
+@@ -137,6 +139,9 @@
+ PHP_FUNCTION(imagefontheight);
+ 
+ PHP_FUNCTION(imagegif );
++PHP_FUNCTION(imagegifanimbegin);
++PHP_FUNCTION(imagegifanimadd);
++PHP_FUNCTION(imagegifanimend);
+ PHP_FUNCTION(imagejpeg );
+ PHP_FUNCTION(imagepng);
+ PHP_FUNCTION(imagewbmp);