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msinttypes	[ DIR ]	drwxr-xr-x
CMakeLists.txt	3.23 KB	-rwxr-xr-x
COPYING	2.25 KB	-rwxr-xr-x
Makefile.am	1.96 KB	-rwxr-xr-x
annotate.c	4.38 KB	-rwxr-xr-x
bdftogd	3.91 KB	-rwxr-xr-x
bmp.h	2.39 KB	-rwxr-xr-x
circletexttest.c	1.49 KB	-rwxr-xr-x
config.h.cmake	3.58 KB	-rwxr-xr-x
demoin.png	9.79 KB	-rwxr-xr-x
depcomp	11.84 KB	-rwxr-xr-x
entities.h	4.81 KB	-rwxr-xr-x
entities.html	41.11 KB	-rwxr-xr-x
entities.tcl	1.35 KB	-rwxr-xr-x
fontconfigtest.c	1.34 KB	-rwxr-xr-x
fontsizetest.c	2.3 KB	-rwxr-xr-x
fontwheeltest.c	3.23 KB	-rwxr-xr-x
gd.c	89.58 KB	-rwxr-xr-x
gd.h	50.14 KB	-rwxr-xr-x
gd2copypal.c	1.25 KB	-rwxr-xr-x
gd2time.c	1.19 KB	-rwxr-xr-x
gd2togif.c	939 B	-rwxr-xr-x
gd2topng.c	1.38 KB	-rwxr-xr-x
gd_bmp.c	25.78 KB	-rwxr-xr-x
gd_color.c	798 B	-rwxr-xr-x
gd_color.h	189 B	-rwxr-xr-x
gd_color_map.c	22.71 KB	-rwxr-xr-x
gd_color_map.h	478 B	-rwxr-xr-x
gd_color_map_test.c	570 B	-rwxr-xr-x
gd_color_match.c	1.49 KB	-rwxr-xr-x
gd_crop.c	5.75 KB	-rwxr-xr-x
gd_errors.h	1.47 KB	-rwxr-xr-x
gd_filename.c	6.41 KB	-rwxr-xr-x
gd_filter.c	21 KB	-rwxr-xr-x
gd_gd.c	7.1 KB	-rwxr-xr-x
gd_gd2.c	25.85 KB	-rwxr-xr-x
gd_gif_in.c	14.79 KB	-rwxr-xr-x
gd_gif_out.c	41 KB	-rwxr-xr-x
gd_intern.h	1.95 KB	-rwxr-xr-x
gd_interpolation.c	59.19 KB	-rwxr-xr-x
gd_io.c	3.42 KB	-rwxr-xr-x
gd_io.h	3.05 KB	-rwxr-xr-x
gd_io_dp.c	7.95 KB	-rwxr-xr-x
gd_io_file.c	2.41 KB	-rwxr-xr-x
gd_io_ss.c	2.66 KB	-rwxr-xr-x
gd_io_stream.cxx	4.11 KB	-rwxr-xr-x
gd_io_stream.h	3.63 KB	-rwxr-xr-x
gd_jpeg.c	34.5 KB	-rwxr-xr-x
gd_matrix.c	7.93 KB	-rwxr-xr-x
gd_nnquant.c	15 KB	-rwxr-xr-x
gd_nnquant.h	527 B	-rwxr-xr-x
gd_png.c	30.58 KB	-rwxr-xr-x
gd_rotate.c	12.25 KB	-rwxr-xr-x
gd_security.c	692 B	-rwxr-xr-x
gd_ss.c	1.27 KB	-rwxr-xr-x
gd_tga.c	8.61 KB	-rwxr-xr-x
gd_tga.h	1.66 KB	-rwxr-xr-x
gd_tiff.c	25.85 KB	-rwxr-xr-x
gd_topal.c	55.18 KB	-rwxr-xr-x
gd_transform.c	1.48 KB	-rwxr-xr-x
gd_version.c	827 B	-rwxr-xr-x
gd_wbmp.c	6.54 KB	-rwxr-xr-x
gd_webp.c	4.25 KB	-rwxr-xr-x
gd_xbm.c	5.68 KB	-rwxr-xr-x
gdcache.c	5.14 KB	-rwxr-xr-x
gdcache.h	2.83 KB	-rwxr-xr-x
gdcmpgif.c	1.86 KB	-rwxr-xr-x
gddemo.c	5.42 KB	-rwxr-xr-x
gdfontg.c	109.84 KB	-rwxr-xr-x
gdfontg.h	553 B	-rwxr-xr-x
gdfontl.c	104.83 KB	-rwxr-xr-x
gdfontl.h	551 B	-rwxr-xr-x
gdfontmb.c	76.33 KB	-rwxr-xr-x
gdfontmb.h	519 B	-rwxr-xr-x
gdfonts.c	66.55 KB	-rwxr-xr-x
gdfonts.h	515 B	-rwxr-xr-x
gdfontt.c	36.82 KB	-rwxr-xr-x
gdfontt.h	546 B	-rwxr-xr-x
gdft.c	49.23 KB	-rwxr-xr-x
gdfx.c	13.52 KB	-rwxr-xr-x
gdfx.h	2.34 KB	-rwxr-xr-x
gdhelpers.c	1.51 KB	-rwxr-xr-x
gdhelpers.h	2.31 KB	-rwxr-xr-x
gdkanji.c	11.97 KB	-rwxr-xr-x
gdparttopng.c	1.23 KB	-rwxr-xr-x
gdpp.cxx	6.43 KB	-rwxr-xr-x
gdpp.h	50.94 KB	-rwxr-xr-x
gdtables.c	4.67 KB	-rwxr-xr-x
gdtest.c	10.27 KB	-rwxr-xr-x
gdtestft.c	5.54 KB	-rwxr-xr-x
gdtopng.c	1.01 KB	-rwxr-xr-x
gdxpm.c	4.64 KB	-rwxr-xr-x
gifanimtest.c	682 B	-rwxr-xr-x
giftogd2.c	1.12 KB	-rwxr-xr-x
jisx0208.h	73.71 KB	-rwxr-xr-x
pngtogd.c	1.03 KB	-rwxr-xr-x
pngtogd2.c	1.23 KB	-rwxr-xr-x
snprintf.c	585 B	-rwxr-xr-x
testac.c	4.14 KB	-rwxr-xr-x
testtr.c	1.33 KB	-rwxr-xr-x
wbmp.c	6.18 KB	-rwxr-xr-x
wbmp.h	1.2 KB	-rwxr-xr-x
webpng.c	6.44 KB	-rwxr-xr-x

Code Editor : gd_gif_in.c

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <stdio.h>
#include <math.h>
#include <string.h>
#include <stdlib.h>
#include "gd.h"

/* 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

#define MAXCOLORMAPSIZE	256

#define TRUE	1
#define FALSE	0

#define CM_RED		0
#define CM_GREEN	1
#define CM_BLUE		2

#define MAX_LWZ_BITS	12

#define INTERLACE		0x40
#define LOCALCOLORMAP	0x80

#define BitSet(byte, bit)	(((byte) & (bit)) == (bit))

#define ReadOK(file, buffer, len) (gdGetBuf(buffer, len, file) > 0)

#define LM_to_uint(a, b)	(((b)<<8)|(a))

/* We may eventually want to use this information, but def it out for now */
#if 0
static struct {
	unsigned int    Width;
	unsigned int    Height;
	unsigned char   ColorMap[3][MAXCOLORMAPSIZE];
	unsigned int    BitPixel;
	unsigned int    ColorResolution;
	unsigned int    Background;
	unsigned int    AspectRatio;
} GifScreen;
#endif

#if 0
static struct {
	int     transparent;
	int     delayTime;
	int     inputFlag;
	int     disposal;
} Gif89 = { -1, -1, -1, 0 };
#endif

#define STACK_SIZE ((1<<(MAX_LWZ_BITS))*2)

#define CSD_BUF_SIZE 280

typedef struct {
	unsigned char buf[CSD_BUF_SIZE];
	int curbit;
	int lastbit;
	int done;
	int last_byte;
} CODE_STATIC_DATA;

typedef struct {
	int fresh;
	int code_size, set_code_size;
	int max_code, max_code_size;
	int firstcode, oldcode;
	int clear_code, end_code;
	int table[2][(1<< MAX_LWZ_BITS)];
	int stack[STACK_SIZE], *sp;
	CODE_STATIC_DATA scd;
} LZW_STATIC_DATA;

static int ReadColorMap (gdIOCtx *fd, int number, unsigned char (*buffer)[256]);
static int DoExtension (gdIOCtx *fd, int label, int *Transparent, int *ZeroDataBlockP);
static int GetDataBlock (gdIOCtx *fd, unsigned char *buf, int *ZeroDataBlockP);
static int GetCode (gdIOCtx *fd, CODE_STATIC_DATA *scd, int code_size, int flag, int *ZeroDataBlockP);
static int LWZReadByte (gdIOCtx *fd, LZW_STATIC_DATA *sd, char flag, int input_code_size, int *ZeroDataBlockP);

static void ReadImage (gdImagePtr im, gdIOCtx *fd, int len, int height, unsigned char (*cmap)[256], int interlace, int *ZeroDataBlockP); /*1.4//, int ignore); */

/*
  Function: gdImageCreateFromGif

<gdImageCreateFromGif> is called to load images from GIF format
    files. Invoke <gdImageCreateFromGif> with an already opened
    pointer to a file containing the desired
    image.

<gdImageCreateFromGif> returns a <gdImagePtr> to the new image, or
    NULL if unable to load the image (most often because the file is
    corrupt or does not contain a GIF image). <gdImageCreateFromGif>
    does not close the file. You can inspect the sx and sy members of
    the image to determine its size. The image must eventually be
    destroyed using <gdImageDestroy>.

Variants:

<gdImageCreateFromGifPtr> creates an image from GIF data (i.e. the
    contents of a GIF file) already in memory.

<gdImageCreateFromGifCtx> reads in an image using the functions in
    a <gdIOCtx> struct.

Parameters:

infile - The input FILE pointer

Returns:

A pointer to the new image or NULL if an error occurred.

Example:

> gdImagePtr im;
    > ... inside a function ...
    > FILE *in;
    > in = fopen("mygif.gif", "rb");
    > im = gdImageCreateFromGif(in);
    > fclose(in);
    > // ... Use the image ... 
    > gdImageDestroy(im);

*/
BGD_DECLARE(gdImagePtr) gdImageCreateFromGif(FILE *fdFile)
{
	gdIOCtx *fd = gdNewFileCtx(fdFile);
	gdImagePtr im;

if (fd == NULL) return NULL;
	im = gdImageCreateFromGifCtx(fd);

fd->gd_free(fd);

return im;
}

/*
  Function: gdImageCreateFromGifPtr

Parameters:

size - size of GIF data in bytes.
    data - GIF data (i.e. contents of a GIF file).

See <gdImageCreateFromGif>.
*/
BGD_DECLARE(gdImagePtr) gdImageCreateFromGifPtr (int size, void *data)
{
	gdImagePtr im;
	gdIOCtx *in = gdNewDynamicCtxEx(size, data, 0);
	if(!in) {
		return 0;
	}
	im = gdImageCreateFromGifCtx(in);
	in->gd_free(in);
	return im;
}

/*
  Function: gdImageCreateFromGifCtx

See <gdImageCreateFromGif>.
*/
BGD_DECLARE(gdImagePtr) gdImageCreateFromGifCtx(gdIOCtxPtr fd)
{
	int BitPixel;
#if 0
	int ColorResolution;
	int Background;
	int AspectRatio;
#endif
	int Transparent = (-1);
	unsigned char buf[16];
	unsigned char c;
	unsigned char ColorMap[3][MAXCOLORMAPSIZE];
	unsigned char localColorMap[3][MAXCOLORMAPSIZE];
	int imw, imh, screen_width, screen_height;
	int useGlobalColormap;
	int bitPixel, i;
	/*1.4//int             imageCount = 0; */
	/* 2.0.28: threadsafe storage */
	int ZeroDataBlock = FALSE;
	int haveGlobalColormap;

gdImagePtr im = 0;

if(!ReadOK(fd, buf, 6)) {
		return 0;
	}

if(strncmp((char *)buf, "GIF", 3) != 0) {
		return 0;
	}

if(memcmp((char *)buf + 3, "87a", 3) == 0) {
		/* GIF87a */
	} else if(memcmp((char *)buf + 3, "89a", 3) == 0) {
		/* GIF89a */
	} else {
		return 0;
	}

if(!ReadOK(fd, buf, 7)) {
		return 0;
	}

BitPixel = 2 << (buf[4] & 0x07);
#if 0
	ColorResolution = (int) (((buf[4]&0x70)>>3)+1);
	Background = buf[5];
	AspectRatio = buf[6];
#endif
	screen_width = imw = LM_to_uint(buf[0], buf[1]);
	screen_height = imh = LM_to_uint(buf[2], buf[3]);

haveGlobalColormap = BitSet(buf[4], LOCALCOLORMAP); /* Global Colormap */
	if(haveGlobalColormap) {
		if(ReadColorMap(fd, BitPixel, ColorMap)) {
			return 0;
		}
	}

for (;;) {
		int top, left;
		int width, height;

if(!ReadOK(fd, &c, 1)) {
			return 0;
		}

if (c == ';') { /* GIF terminator */
			goto terminated;
		}

if(c == '!') { /* Extension */
			if(!ReadOK(fd, &c, 1)) {
				return 0;
			}

DoExtension(fd, c, &Transparent, &ZeroDataBlock);
			continue;
		}

if(c != ',') { /* Not a valid start character */
			continue;
		}

/*1.4//++imageCount; */

if(!ReadOK(fd, buf, 9)) {
			return 0;
		}

useGlobalColormap = !BitSet(buf[8], LOCALCOLORMAP);

bitPixel = 1 << ((buf[8] & 0x07) + 1);
		left = LM_to_uint(buf[0], buf[1]);
		top = LM_to_uint(buf[2], buf[3]);
		width = LM_to_uint(buf[4], buf[5]);
		height = LM_to_uint(buf[6], buf[7]);

if(((left + width) > screen_width) || ((top + height) > screen_height)) {
			if(VERBOSE) {
				printf("Frame is not confined to screen dimension.\n");
			}
			return 0;
		}

if(!(im = gdImageCreate(width, height))) {
			return 0;
		}

im->interlace = BitSet(buf[8], INTERLACE);
		if(!useGlobalColormap) {
			if(ReadColorMap(fd, bitPixel, localColorMap)) {
				gdImageDestroy(im);
				return 0;
			}

ReadImage(im, fd, width, height, localColorMap, BitSet(buf[8], INTERLACE), &ZeroDataBlock);
		} else {
			if(!haveGlobalColormap) {
				gdImageDestroy(im);
				return 0;
			}

ReadImage(im, fd, width, height, ColorMap, BitSet(buf[8], INTERLACE), &ZeroDataBlock);
		}

if(Transparent != (-1)) {
			gdImageColorTransparent(im, Transparent);
		}

goto terminated;
	}

terminated:
	/* Terminator before any image was declared! */
	if(!im) {
		return 0;
	}

if(!im->colorsTotal) {
		gdImageDestroy(im);
		return 0;
	}

/* Check for open colors at the end, so
	 * we can reduce colorsTotal and ultimately
	 * BitsPerPixel */
	for(i = im->colorsTotal - 1; i >= 0; i--) {
		if(im->open[i]) {
			im->colorsTotal--;
		} else {
			break;
		}
	}

return im;
}

static int
ReadColorMap(gdIOCtx *fd, int number, unsigned char (*buffer)[256])
{
	int i;
	unsigned char rgb[3];

for(i = 0; i < number; ++i) {
		if(!ReadOK(fd, rgb, sizeof(rgb))) {
			return TRUE;
		}

buffer[CM_RED][i] = rgb[0];
		buffer[CM_GREEN][i] = rgb[1];
		buffer[CM_BLUE][i] = rgb[2];
	}

return FALSE;
}

static int
DoExtension(gdIOCtx *fd, int label, int *Transparent, int *ZeroDataBlockP)
{
	unsigned char buf[256];

switch(label) {
	case 0xf9: /* Graphic Control Extension */
		memset(buf, 0, 4); /* initialize a few bytes in the case the next function fails */
		(void) GetDataBlock(fd, (unsigned char*) buf, ZeroDataBlockP);
#if 0
		Gif89.disposal  = (buf[0] >> 2) & 0x7;
		Gif89.inputFlag = (buf[0] >> 1) & 0x1;
		Gif89.delayTime = LM_to_uint(buf[1], buf[2]);
#endif
		if((buf[0] & 0x1) != 0) {
			*Transparent = buf[3];
		}

while(GetDataBlock(fd, (unsigned char*) buf, ZeroDataBlockP) > 0);

return FALSE;

default:
		break;
	}

while(GetDataBlock(fd, (unsigned char*) buf, ZeroDataBlockP) > 0);

return FALSE;
}

static int
GetDataBlock_(gdIOCtx *fd, unsigned char *buf, int *ZeroDataBlockP)
{
	unsigned char count;

if(!ReadOK(fd, &count, 1)) {
		return -1;
	}

*ZeroDataBlockP = count == 0;

if((count != 0) && (!ReadOK(fd, buf, count))) {
		return -1;
	}

return count;
}

static int
GetDataBlock(gdIOCtx *fd, unsigned char *buf, int *ZeroDataBlockP)
{
	int rv, i;

rv = GetDataBlock_(fd,buf, ZeroDataBlockP);

if(VERBOSE) {
		printf("[GetDataBlock returning %d",rv);
		if(rv > 0) {
			printf(":");
			for(i = 0; i < rv; i++) {
				printf(" %02x",buf[i]);
			}
		}
		printf("]\n");
	}

return rv;
}

static int
GetCode_(gdIOCtx *fd, CODE_STATIC_DATA *scd, int code_size, int flag, int *ZeroDataBlockP)
{
	int i, j, ret;
	unsigned char count;

if(flag) {
		scd->curbit = 0;
		scd->lastbit = 0;
		scd->last_byte = 0;
		scd->done = FALSE;
		return 0;
	}

if((scd->curbit + code_size) >= scd->lastbit) {
		if(scd->done) {
			if(scd->curbit >= scd->lastbit) {
				/* Oh well */
			}
			return -1;
		}

scd->buf[0] = scd->buf[scd->last_byte - 2];
		scd->buf[1] = scd->buf[scd->last_byte - 1];

if((count = GetDataBlock(fd, &scd->buf[2], ZeroDataBlockP)) <= 0) {
			scd->done = TRUE;
		}

scd->last_byte = 2 + count;
		scd->curbit = (scd->curbit - scd->lastbit) + 16;
		scd->lastbit = (2 + count) * 8;
	}

if ((scd->curbit + code_size - 1) >= (CSD_BUF_SIZE * 8)) {
		ret = -1;
	} else {
		ret = 0;
		for (i = scd->curbit, j = 0; j < code_size; ++i, ++j) {
			ret |= ((scd->buf[i / 8] & (1 << (i % 8))) != 0) << j;
		}
	}

scd->curbit += code_size;

return ret;
}

static int
GetCode(gdIOCtx *fd, CODE_STATIC_DATA *scd, int code_size, int flag, int *ZeroDataBlockP)
{
	int rv;

rv = GetCode_(fd, scd, code_size,flag, ZeroDataBlockP);

if(VERBOSE) {
		printf("[GetCode(,%d,%d) returning %d]\n",code_size,flag,rv);
	}

return rv;
}

static int
LWZReadByte_(gdIOCtx *fd, LZW_STATIC_DATA *sd, char flag, int input_code_size, int *ZeroDataBlockP)
{
	int code, incode, i;

if(flag) {
		sd->set_code_size = input_code_size;
		sd->code_size = sd->set_code_size + 1;
		sd->clear_code = 1 << sd->set_code_size;
		sd->end_code = sd->clear_code + 1;
		sd->max_code_size = 2 * sd->clear_code;
		sd->max_code = sd->clear_code + 2;

GetCode(fd, &sd->scd, 0, TRUE, ZeroDataBlockP);

sd->fresh = TRUE;

for(i = 0; i < sd->clear_code; ++i) {
			sd->table[0][i] = 0;
			sd->table[1][i] = i;
		}

for(; i < (1 << MAX_LWZ_BITS); ++i) {
			sd->table[0][i] = sd->table[1][0] = 0;
		}

sd->sp = sd->stack;

return 0;

} else if(sd->fresh) {
		sd->fresh = FALSE;

do {
			sd->firstcode = sd->oldcode =
			                    GetCode(fd, &sd->scd, sd->code_size, FALSE, ZeroDataBlockP);
		} while(sd->firstcode == sd->clear_code);

return sd->firstcode;
	}

if(sd->sp > sd->stack) {
		return *--sd->sp;
	}

while((code = GetCode(fd, &sd->scd, sd->code_size, FALSE, ZeroDataBlockP)) >= 0) {
		if(code == sd->clear_code) {
			for(i = 0; i < sd->clear_code; ++i) {
				sd->table[0][i] = 0;
				sd->table[1][i] = i;
			}

for (; i < (1 << MAX_LWZ_BITS); ++i) {
				sd->table[0][i] = sd->table[1][i] = 0;
			}

sd->code_size = sd->set_code_size + 1;
			sd->max_code_size = 2 * sd->clear_code;
			sd->max_code = sd->clear_code + 2;
			sd->sp = sd->stack;
			sd->firstcode = sd->oldcode =
			                    GetCode(fd, &sd->scd, sd->code_size, FALSE, ZeroDataBlockP);

return sd->firstcode;
		} else if(code == sd->end_code) {
			int count;
			unsigned char buf[260];

if(*ZeroDataBlockP) {
				return -2;
			}

while((count = GetDataBlock(fd, buf, ZeroDataBlockP)) > 0);

if(count != 0) {
				return -2;
			}
		}

incode = code;

if(sd->sp == (sd->stack + STACK_SIZE)) {
			/* Bad compressed data stream */
			return -1;
		}

if(code >= sd->max_code) {
			*sd->sp++ = sd->firstcode;
			code = sd->oldcode;
		}

while(code >= sd->clear_code) {
			if(sd->sp == (sd->stack + STACK_SIZE)) {
				/* Bad compressed data stream */
				return -1;
			}

*sd->sp++ = sd->table[1][code];

if(code == sd->table[0][code]) {
				/* Oh well */
			}

code = sd->table[0][code];
		}

*sd->sp++ = sd->firstcode = sd->table[1][code];

if((code = sd->max_code) < (1 << MAX_LWZ_BITS)) {
			sd->table[0][code] = sd->oldcode;
			sd->table[1][code] = sd->firstcode;
			++sd->max_code;

if((sd->max_code >= sd->max_code_size) && (sd->max_code_size < (1<<MAX_LWZ_BITS))) {
				sd->max_code_size *= 2;
				++sd->code_size;
			}
		}

sd->oldcode = incode;

if(sd->sp > sd->stack) {
			return *--sd->sp;
		}
	}

return code;
}

static int
LWZReadByte(gdIOCtx *fd, LZW_STATIC_DATA *sd, char flag, int input_code_size, int *ZeroDataBlockP)
{
	int rv;

rv = LWZReadByte_(fd, sd, flag, input_code_size, ZeroDataBlockP);

if(VERBOSE) {
		printf("[LWZReadByte(,%d,%d) returning %d]\n",flag,input_code_size,rv);
	}

return rv;
}

static void
ReadImage(gdImagePtr im, gdIOCtx *fd, int len, int height, unsigned char (*cmap)[256], int interlace, int *ZeroDataBlockP) /*1.4//, int ignore) */
{
	unsigned char c;
	int xpos = 0, ypos = 0, pass = 0;
	int v, i;
	LZW_STATIC_DATA sd;

/* Initialize the Compression routines */
	if(!ReadOK(fd, &c, 1)) {
		return;
	}

if(c > MAX_LWZ_BITS) {
		return;
	}

/* Stash the color map into the image */
	for(i=0; (i < gdMaxColors); i++) {
		im->red[i] = cmap[CM_RED][i];
		im->green[i] = cmap[CM_GREEN][i];
		im->blue[i] = cmap[CM_BLUE][i];
		im->open[i] = 1;
	}

/* Many (perhaps most) of these colors will remain marked open. */
	im->colorsTotal = gdMaxColors;
	if(LWZReadByte(fd, &sd, TRUE, c, ZeroDataBlockP) < 0) {
		return;
	}

/*
	**  If this is an "uninteresting picture" ignore it.
	**  REMOVED For 1.4
	*/
	/*if (ignore) { */
	/*        while (LWZReadByte(fd, &sd, FALSE, c) >= 0) */
	/*                ; */
	/*        return; */
	/*} */

while((v = LWZReadByte(fd, &sd, FALSE, c, ZeroDataBlockP)) >= 0 ) {
		if(v >= gdMaxColors) {
			v = 0;
		}

/* This how we recognize which colors are actually used. */
		if(im->open[v]) {
			im->open[v] = 0;
		}

gdImageSetPixel(im, xpos, ypos, v);

++xpos;
		if(xpos == len) {
			xpos = 0;
			if(interlace) {
				switch (pass) {
				case 0:
				case 1:
					ypos += 8;
					break;
				case 2:
					ypos += 4;
					break;
				case 3:
					ypos += 2;
					break;
				}

if(ypos >= height) {
					++pass;
					switch (pass) {
					case 1:
						ypos = 4;
						break;
					case 2:
						ypos = 2;
						break;
					case 3:
						ypos = 1;
						break;
					default:
						goto fini;
					}
				}
			} else {
				++ypos;
			}
		}

if(ypos >= height) {
			break;
		}
	}

fini:
	if(LWZReadByte(fd, &sd, FALSE, c, ZeroDataBlockP) >=0) {
		/* Ignore extra */
	}
}

${this.title}

Code Editor : gd_gif_in.c