| 1 | /*****************************************************************************
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| 2 | * "Gif-Lib" - Yet another gif library. *
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| 3 | * *
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| 4 | * Written by: Gershon Elber IBM PC Ver 1.1, Jun. 1989 *
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| 5 | ******************************************************************************
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| 6 | * Module to dump graphic devices into a GIF file. Current supported devices: *
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| 7 | * 1. EGA, VGA, SVGA (800x600), Hercules on the IBM PC (#define __MSDOS__). *
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| 8 | * 2. SGI 4D Irix using gl library (#define __SGI_GL__). *
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| 9 | * 3. X11 using libX.a (#define __X11__). *
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| 10 | ******************************************************************************
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| 11 | * History: *
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| 12 | * 22 Jun 89 - Version 1.0 by Gershon Elber. *
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| 13 | * 12 Aug 90 - Version 1.1 by Gershon Elber (added devices). *
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| 14 | *****************************************************************************/
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| 15 |
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| 16 | #ifdef __MSDOS__
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| 17 | #include <dos.h>
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| 18 | #include <alloc.h>
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| 19 | #include <graphics.h>
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| 20 | #endif /* __MSDOS__ */
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| 21 |
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| 22 | #ifdef __SGI_GL__
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| 23 | #include <gl/gl.h>
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| 24 | #endif /* __SGI_GL__ */
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| 25 |
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| 26 | #ifdef __X11__
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| 27 | #include <X11/Xlib.h>
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| 28 | #endif /* __X11__ */
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| 29 |
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| 30 | #if (defined(__IBMC__) || defined(__IBMCPP__))
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| 31 | #include <io.h>
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| 32 | #endif
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| 33 |
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| 34 | #include <stdlib.h>
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| 35 | #include <stdio.h>
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| 36 | #include <string.h>
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| 37 | #include "gif_lib.h"
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| 38 |
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| 39 | #define PROGRAM_NAME "GIF_LIBRARY"
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| 40 |
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| 41 | #define SVGA_SPECIAL 999 /* 800 by 600 Super VGA mode. */
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| 42 |
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| 43 | static int GraphDriver = -1, /* Device parameters - reasonable values. */
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| 44 | GraphMode = -1,
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| 45 | ScreenColorBits = 1;
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| 46 | static long ScreenXMax = 100,
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| 47 | ScreenYMax = 100;
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| 48 | static unsigned int ScreenBase;
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| 49 |
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| 50 | #ifdef SYSV
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| 51 | static char *VersionStr =
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| 52 | "Gif library module,\t\tEric S. Raymond\n\
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| 53 | (C) Copyright 1997 Eric S. Raymond\n";
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| 54 | #else
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| 55 | static char *VersionStr =
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| 56 | PROGRAM_NAME
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| 57 | " IBMPC "
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| 58 | GIF_LIB_VERSION
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| 59 | " Eric S. Raymond, "
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| 60 | __DATE__ ", " __TIME__ "\n"
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| 61 | "(C) Copyright 1997 Eric S. Raymond\n";
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| 62 | #endif /* SYSV */
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| 63 |
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| 64 | #if defined(__SGI_GL__) || defined(__X11__)
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| 65 | GifByteType *GlblGifBuffer = NULL, *GlblGifBufferPtr = NULL;
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| 66 | #endif /* __SGI_GL__ || __X11__ */
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| 67 |
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| 68 | #ifdef __SGI_GL__
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| 69 | static int QuantizeRGBBuffer(int Width, int Height, long *RGBBuffer,
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| 70 | GifColorType *ColorMap, GifByteType *GIFBuffer);
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| 71 | #endif /* __SGI_GL__ */
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| 72 |
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| 73 | static void GetScanLine(GifPixelType *ScanLine, int Y);
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| 74 | static int HandleGifError(GifFileType *GifFile);
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| 75 |
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| 76 | /******************************************************************************
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| 77 | * Dump the given Device, into given File as GIF format: *
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| 78 | * Return 0 on success, -1 if device not supported, or GIF-LIB error number. *
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| 79 | * Device is selected via the ReqGraphDriver. Device mode is selected via *
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| 80 | * ReqGraphMode1/2 as follows: *
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| 81 | * 1. IBM PC Hercules card: HERCMONO (one mode only) in ReqGraphMode1, *
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| 82 | * ReqGraphMode2/3 are ignored. *
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| 83 | * 2. IBM PC EGA card: EGALO/EGAHI in ReqGraphMode1, *
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| 84 | * ReqGraphMode2/3 are ignored. *
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| 85 | * 3. IBM PC EGA64 card: EGA64LO/EGA64HI in ReqGraphMode1, *
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| 86 | * ReqGraphMode2/3 are ignored. *
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| 87 | * 4. IBM PC EGAMONO card: EGAMONOHI (one mode only) in ReqGraphMode1, *
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| 88 | * ReqGraphMode2/3 are ignored. *
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| 89 | * 5. IBM PC VGA card: VGALO/VGAMED/VGAHI in ReqGraphMode1, *
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| 90 | * ReqGraphMode2/3 are ignored. *
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| 91 | * 6. IBM PC SVGA card: ReqGraphMode1/2 are both ignored. Fixed mode (800x600 *
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| 92 | * 16 colors) is assumed. *
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| 93 | * 7. SGI 4D using GL: window id to dump (as returned by winget()) in *
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| 94 | * ReqGraphMode1, ReqGraphMode2/3 are ignored. *
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| 95 | * 8. X11: Window id in ReqGraphMode1, Display id in ReqGraphMode2, Color *
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| 96 | * map id in ReqGraphMode3. *
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| 97 | ******************************************************************************/
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| 98 | int DumpScreen2Gif(char *FileName, int ReqGraphDriver, int ReqGraphMode1,
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| 99 | int ReqGraphMode2,
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| 100 | int ReqGraphMode3)
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| 101 | {
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| 102 | int i, j, k;
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| 103 | GifPixelType *ScanLine;
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| 104 | GifFileType *GifFile;
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| 105 | ColorMapObject *ColorMap = NULL;
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| 106 | #ifdef __MSDOS__
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| 107 | static GifColorType MonoChromeColorMap[] = {
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| 108 | { 0, 0, 0 },
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| 109 | { 255, 255, 255 }
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| 110 | };
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| 111 | /* I have no idea what default EGA64 (4 colors) should be (I guessed...).*/
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| 112 | static GifColorType EGA64ColorMap[] = {
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| 113 | { 0, 0, 0 }, /* 0. Black */
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| 114 | { 255, 0, 0 }, /* 1. Red */
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| 115 | { 0, 255, 0 }, /* 2. Green */
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| 116 | { 0, 0, 255 }, /* 3. Blue */
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| 117 | };
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| 118 | static GifColorType EGAColorMap[] = {
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| 119 | { 0, 0, 0 }, /* 0. Black */
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| 120 | { 0, 0, 170 }, /* 1. Blue */
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| 121 | { 0, 170, 0 }, /* 2. Green */
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| 122 | { 0, 170, 170 }, /* 3. Cyan */
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| 123 | { 170, 0, 0 }, /* 4. Red */
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| 124 | { 170, 0, 170 }, /* 5. Magenta */
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| 125 | { 170, 170, 0 }, /* 6. Brown */
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| 126 | { 170, 170, 170 }, /* 7. LightGray */
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| 127 | { 85, 85, 85 }, /* 8. DarkGray */
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| 128 | { 85, 85, 255 }, /* 9. LightBlue */
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| 129 | { 85, 255, 85 }, /* 10. LightGreen */
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| 130 | { 85, 255, 255 }, /* 11. LightCyan */
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| 131 | { 255, 85, 85 }, /* 12. LightRed */
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| 132 | { 255, 85, 255 }, /* 13. LightMagenta */
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| 133 | { 255, 255, 85 }, /* 14. Yellow */
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| 134 | { 255, 255, 255 }, /* 15. White */
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| 135 | };
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| 136 | #endif /* __MSDOS__ */
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| 137 | #if defined(__SGI_GL__) || defined(__X11__)
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| 138 | long *RGBBuffer;
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| 139 | GifColorType ColorMap256[256];
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| 140 | #endif
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| 141 | #ifdef __X11__
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| 142 | XImage *XImg;
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| 143 | unsigned long XPixel;
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| 144 | XColor XColorTable[256]; /* Up to 256 colors in X. */
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| 145 | XWindowAttributes WinAttr;
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| 146 | #endif /* __X11__ */
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| 147 |
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| 148 | switch (ReqGraphDriver) { /* Return on non supported screens. */
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| 149 | #ifdef __MSDOS__
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| 150 | case HERCMONO:
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| 151 | ScreenXMax = 720;
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| 152 | ScreenYMax = 350;
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| 153 | ScreenColorBits = 1;
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| 154 | ScreenBase = 0xb000;
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| 155 | ColorMap = MakeMapObject(2, MonoChromeColorMap);
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| 156 | break;
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| 157 | case EGA:
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| 158 | switch (ReqGraphMode1) {
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| 159 | case EGALO:
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| 160 | ScreenYMax = 200;
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| 161 | break;
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| 162 | case EGAHI:
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| 163 | ScreenYMax = 350;
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| 164 | break;
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| 165 | default:
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| 166 | return -1;
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| 167 | }
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| 168 | ScreenXMax = 640;
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| 169 | ScreenColorBits = 4;
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| 170 | ScreenBase = 0xa000;
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| 171 | ColorMap = MakeMapObject(16, EGAColorMap);
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| 172 | break;
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| 173 | case EGA64:
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| 174 | switch (ReqGraphMode1) {
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| 175 | case EGA64LO:
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| 176 | ScreenYMax = 200;
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| 177 | break;
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| 178 | case EGA64HI:
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| 179 | ScreenYMax = 350;
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| 180 | break;
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| 181 | default:
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| 182 | return -1;
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| 183 | }
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| 184 | ScreenXMax = 640;
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| 185 | ScreenColorBits = 2;
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| 186 | ScreenBase = 0xa000;
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| 187 | ColorMap = MakeMapObject(4, EGA64ColorMap);
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| 188 | break;
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| 189 | case EGAMONO:
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| 190 | switch (ReqGraphMode1) {
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| 191 | case EGAMONOHI:
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| 192 | ScreenYMax = 350;
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| 193 | break;
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| 194 | default:
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| 195 | return -1;
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| 196 | }
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| 197 | ScreenXMax = 640;
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| 198 | ScreenColorBits = 1;
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| 199 | ScreenBase = 0xa000;
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| 200 | ColorMap = MakeMapObject(2, MonoChromeColorMap);
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| 201 | break;
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| 202 | case VGA:
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| 203 | switch (ReqGraphMode1) {
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| 204 | case VGALO:
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| 205 | ScreenYMax = 200;
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| 206 | break;
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| 207 | case VGAMED:
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| 208 | ScreenYMax = 350;
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| 209 | break;
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| 210 | case VGAHI:
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| 211 | ScreenYMax = 480;
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| 212 | break;
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| 213 | default:
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| 214 | return -1;
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| 215 | }
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| 216 | ScreenXMax = 640;
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| 217 | ScreenColorBits = 4;
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| 218 | ScreenBase = 0xa000;
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| 219 | ColorMap = MakeMapObject(16, EGAColorMap);
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| 220 | break;
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| 221 | case SVGA_SPECIAL:
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| 222 | ScreenXMax = 800;
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| 223 | ScreenYMax = 600;
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| 224 | ScreenColorBits = 4;
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| 225 | ScreenBase = 0xa000;
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| 226 | ColorMap = MakeMapObject(16, EGAColorMap);
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| 227 | break;
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| 228 | #endif /* __MSDOS__ */
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| 229 | #ifdef __SGI_GL__
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| 230 | case GIF_DUMP_SGI_WINDOW:
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| 231 | winset(ReqGraphMode1); /* Select window as active window. */
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| 232 | getsize(&ScreenXMax, &ScreenYMax);
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| 233 |
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| 234 | RGBBuffer = (long *) malloc(sizeof(long) * ScreenXMax * ScreenYMax);
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| 235 | readsource(SRC_FRONT);
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| 236 | if (lrectread((short) 0,
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| 237 | (short) 0,
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| 238 | (short) (ScreenXMax - 1),
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| 239 | (short) (ScreenYMax - 1), RGBBuffer) !=
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| 240 | ScreenXMax * ScreenYMax) { /* Get data. */
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| 241 | free(RGBBuffer);
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| 242 | return -1;
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| 243 | }
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| 244 | GlblGifBuffer = (GifByteType *) malloc(sizeof(GifByteType) *
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| 245 | ScreenXMax * ScreenYMax);
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| 246 | i = QuantizeRGBBuffer(ScreenXMax, ScreenYMax, RGBBuffer,
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| 247 | ColorMap256, GlblGifBuffer);
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| 248 | /* Find minimum color map size to hold all quantized colors. */
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| 249 | for (ScreenColorBits = 1;
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| 250 | (1 << ScreenColorBits) < i && ScreenColorBits < 8;
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| 251 | ScreenColorBits++);
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| 252 |
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| 253 | /* Start to dump with top line as GIF expects it. */
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| 254 | GlblGifBufferPtr = GlblGifBuffer + ScreenXMax * (ScreenYMax - 1);
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| 255 | ColorMap = MakeMapObject(256, ColorMap256);
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| 256 | free(RGBBuffer);
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| 257 | break;
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| 258 | #endif /* __SGI_GL__ */
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| 259 | #ifdef __X11__
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| 260 | case GIF_DUMP_X_WINDOW:
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| 261 | XGetWindowAttributes((Display *) ReqGraphMode2,
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| 262 | (Window) ReqGraphMode1,
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| 263 | &WinAttr);
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| 264 | ScreenXMax = WinAttr.width;
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| 265 | ScreenYMax = WinAttr.height;
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| 266 |
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| 267 | XImg = XGetImage((Display *) ReqGraphMode2,
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| 268 | (Window) ReqGraphMode1,
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| 269 | 0, 0, ScreenXMax - 1, ScreenYMax - 1,
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| 270 | AllPlanes, XYPixmap);
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| 271 |
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| 272 | GlblGifBuffer = (GifByteType *) malloc(sizeof(GifByteType) *
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| 273 | ScreenXMax * ScreenYMax);
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| 274 |
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| 275 | /* Scan the image for all different colors exists. */
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| 276 | for (i = 0; i < 256; i++) XColorTable[i].pixel = 0;
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| 277 | k = FALSE;
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| 278 | for (i = 0; i < ScreenXMax; i++)
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| 279 | for (j = 0; j < ScreenYMax; j++) {
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| 280 | XPixel = XGetPixel(XImg, i, j);
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| 281 | if (XPixel > 255) {
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| 282 | if (!k) {
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| 283 | /* Make sure we state it once only.*/
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| 284 | fprintf(stderr, "X Color table - truncated.\n");
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| 285 | k = TRUE;
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| 286 | }
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| 287 | XPixel = 255;
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| 288 | }
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| 289 | XColorTable[XPixel].pixel = XPixel;
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| 290 | }
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| 291 | /* Find the RGB representation of the colors. */
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| 292 | XQueryColors((Display *) ReqGraphMode2,
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| 293 | (Colormap) ReqGraphMode3,
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| 294 | XColorTable,
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| 295 | 256);
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| 296 | /* Count number of active colors (Note color 0 is always in) */
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| 297 | /* and create the Gif color map from it. */
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| 298 | ColorMap = MakeMapObject(256, ColorMap256);
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| 299 | ColorMap->Colors[0].Red = ColorMap->Colors[0].Green = ColorMap->Colors[0].Blue = 0;
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| 300 | for (i = j = 1; i < 256; i++)
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| 301 | if (XColorTable[i].pixel) {
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| 302 | ColorMap->Colors[j].Red = XColorTable[i].red / 256;
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| 303 | ColorMap->Colors[j].Green = XColorTable[i].green / 256;
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| 304 | ColorMap->Colors[j].Blue = XColorTable[i].blue / 256;
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| 305 | /* Save the X color index into the Gif table: */
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| 306 | XColorTable[i].pixel = j++;
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| 307 | }
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| 308 | /* and set the number of colors in the Gif color map. */
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| 309 | for (ScreenColorBits = 1;
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| 310 | (1 << ScreenColorBits) < j && ScreenColorBits < 8;
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| 311 | ScreenColorBits++);
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| 312 |
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| 313 | /* Prepare the Gif image buffer as indices into the Gif color */
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| 314 | /* map from the X image. */
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| 315 | GlblGifBufferPtr = GlblGifBuffer;
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| 316 | for (i = 0; i < ScreenXMax; i++)
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| 317 | for (j = 0; j < ScreenYMax; j++)
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| 318 | *GlblGifBufferPtr++ =
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| 319 | XColorTable[XGetPixel(XImg, j, i) & 0xff].pixel;
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| 320 | XDestroyImage(XImg);
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| 321 |
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| 322 | GlblGifBufferPtr = GlblGifBuffer;
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| 323 | ColorMap = MakeMapObject(256, ColorMap256);
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| 324 | break;
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| 325 | #endif /* __X11__ */
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| 326 | default:
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| 327 | return -1;
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| 328 | }
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| 329 |
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| 330 | ScanLine = (GifPixelType *) malloc(sizeof(GifPixelType) * ScreenXMax);
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| 331 |
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| 332 | GraphDriver = ReqGraphDriver;
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| 333 | GraphMode = ReqGraphMode1;
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| 334 |
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| 335 | if ((GifFile = EGifOpenFileName(FileName, FALSE)) == NULL ||
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| 336 | EGifPutScreenDesc(GifFile, ScreenXMax, ScreenYMax, ScreenColorBits,
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| 337 | 0, ColorMap) == GIF_ERROR ||
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| 338 | EGifPutImageDesc(GifFile, 0, 0, ScreenXMax, ScreenYMax, FALSE,
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| 339 | NULL) == GIF_ERROR) {
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| 340 | free((char *) ScanLine);
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| 341 | #if defined(__SGI_GL__) || defined(__X11__)
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| 342 | free((char *) GlblGifBuffer);
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| 343 | #endif
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| 344 | return HandleGifError(GifFile);
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| 345 | }
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| 346 |
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| 347 | for (i = 0; i < ScreenYMax; i++) {
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| 348 | GetScanLine(ScanLine, i);
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| 349 | if (EGifPutLine(GifFile, ScanLine, ScreenXMax) == GIF_ERROR) {
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| 350 | free((char *) ScanLine);
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| 351 | #if defined(__SGI_GL__) || defined(__X11__)
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| 352 | free((char *) GlblGifBuffer);
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| 353 | #endif
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| 354 | return HandleGifError(GifFile);
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| 355 | }
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| 356 | }
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| 357 |
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| 358 | if (EGifCloseFile(GifFile) == GIF_ERROR) {
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| 359 | free((char *) ScanLine);
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| 360 | #if defined(__SGI_GL__) || defined(__X11__)
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| 361 | free((char *) GlblGifBuffer);
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| 362 | #endif
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| 363 | return HandleGifError(GifFile);
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| 364 | }
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| 365 |
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| 366 | free((char *) ScanLine);
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| 367 | #if defined(__SGI_GL__) || defined(__X11__)
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| 368 | free((char *) GlblGifBuffer);
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| 369 | #endif
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| 370 | return 0;
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| 371 | }
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| 372 |
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| 373 | #ifdef __SGI_GL__
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| 374 | /******************************************************************************
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| 375 | * Quantize the given 24 bit (8 per RGB) into 256 colors. *
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| 376 | ******************************************************************************/
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| 377 | static int QuantizeRGBBuffer(int Width, int Height, long *RGBBuffer,
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| 378 | GifColorType *ColorMap, GifByteType *GIFBuffer)
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| 379 | {
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| 380 | int i;
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| 381 | GifByteType *RedInput, *GreenInput, *BlueInput;
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| 382 |
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| 383 | /* Convert the RGB Buffer into 3 seperated buffers: */
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| 384 | RedInput = (GifByteType *) malloc(sizeof(GifByteType) * Width * Height);
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| 385 | GreenInput = (GifByteType *) malloc(sizeof(GifByteType) * Width * Height);
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| 386 | BlueInput = (GifByteType *) malloc(sizeof(GifByteType) * Width * Height);
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| 387 |
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| 388 | for (i = 0; i < Width * Height; i++) {
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| 389 | RedInput[i] = RGBBuffer[i] & 0xff;
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| 390 | GreenInput[i] = (RGBBuffer[i] >> 8) & 0xff;
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| 391 | BlueInput[i] = (RGBBuffer[i] >> 16) & 0xff;
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| 392 | }
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| 393 | for (i = 0; i < 256; i++)
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| 394 | ColorMap[i].Red = ColorMap[i].Green = ColorMap[i].Blue = 0;
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| 395 |
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| 396 | i = 256;
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| 397 | QuantizeBuffer(Width, Height, &i,
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| 398 | RedInput, GreenInput, BlueInput,
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| 399 | GIFBuffer, ColorMap);
|
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| 400 |
|
|---|
| 401 | free(RedInput);
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| 402 | free(GreenInput);
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| 403 | free(BlueInput);
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|---|
| 404 |
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|---|
| 405 | return i; /* Real number of colors in color table. */
|
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| 406 | }
|
|---|
| 407 | #endif /* __SGI_GL__ */
|
|---|
| 408 |
|
|---|
| 409 | /******************************************************************************
|
|---|
| 410 | * Update the given scan line buffer with the pixel levels of the Y line. *
|
|---|
| 411 | * This routine is device specific, so make sure you know was you are doing *
|
|---|
| 412 | ******************************************************************************/
|
|---|
| 413 | static void GetScanLine(GifPixelType *ScanLine, int Y)
|
|---|
| 414 | {
|
|---|
| 415 | unsigned char ScreenByte;
|
|---|
| 416 | int i, j, k;
|
|---|
| 417 | unsigned int BufferOffset, Bit;
|
|---|
| 418 | #ifdef __MSDOS__
|
|---|
| 419 | union REGS InRegs, OutRegs;
|
|---|
| 420 | #endif /* __MSDOS__ */
|
|---|
| 421 |
|
|---|
| 422 | switch (GraphDriver) {
|
|---|
| 423 | #ifdef __MSDOS__
|
|---|
| 424 | case HERCMONO:
|
|---|
| 425 | BufferOffset = 0x2000 * (Y % 4) + (Y / 4) * (ScreenXMax / 8);
|
|---|
| 426 | /* In one scan lines we have ScreenXMax / 8 bytes: */
|
|---|
| 427 | for (i = 0, k = 0; i < ScreenXMax / 8; i++) {
|
|---|
| 428 | ScreenByte = (unsigned char) peekb(ScreenBase, BufferOffset++);
|
|---|
| 429 | for (j = 0, Bit = 0x80; j < 8; j++) {
|
|---|
| 430 | ScanLine[k++] = (ScreenByte & Bit ? 1 : 0);
|
|---|
| 431 | Bit >>= 1;
|
|---|
| 432 | }
|
|---|
| 433 | }
|
|---|
| 434 | break;
|
|---|
| 435 | case EGA:
|
|---|
| 436 | case EGA64:
|
|---|
| 437 | case EGAMONO:
|
|---|
| 438 | case VGA:
|
|---|
| 439 | case SVGA_SPECIAL:
|
|---|
| 440 | InRegs.x.dx = Y;
|
|---|
| 441 | InRegs.h.bh = 0;
|
|---|
| 442 | InRegs.h.ah = 0x0d; /* BIOS Read dot. */
|
|---|
| 443 | for (i = 0; i < ScreenXMax; i++) {
|
|---|
| 444 | InRegs.x.cx = i;
|
|---|
| 445 | int86(0x10, &InRegs, &OutRegs);
|
|---|
| 446 | ScanLine[i] = OutRegs.h.al;
|
|---|
| 447 | }
|
|---|
| 448 |
|
|---|
| 449 | /* Makr this line as done by putting a xored dot on the left. */
|
|---|
| 450 | InRegs.x.dx = Y;
|
|---|
| 451 | InRegs.h.bh = 0;
|
|---|
| 452 | InRegs.h.ah = 0x0c; /* BIOS Write dot (xor mode). */
|
|---|
| 453 | InRegs.h.al = 0x81; /* Xor with color 1. */
|
|---|
| 454 | InRegs.x.cx = 0;
|
|---|
| 455 | int86(0x10, &InRegs, &OutRegs);
|
|---|
| 456 | InRegs.x.dx = Y;
|
|---|
| 457 | InRegs.h.bh = 0;
|
|---|
| 458 | InRegs.h.ah = 0x0c; /* BIOS Write dot (xor mode). */
|
|---|
| 459 | InRegs.h.al = 0x81; /* Xor with color 1. */
|
|---|
| 460 | InRegs.x.cx = 1;
|
|---|
| 461 | int86(0x10, &InRegs, &OutRegs);
|
|---|
| 462 |
|
|---|
| 463 | if (Y == ScreenYMax - 1) {/* Last row - clear all marks we made. */
|
|---|
| 464 | for (i = 0; i < ScreenYMax; i++) {
|
|---|
| 465 | InRegs.h.bh = 0;
|
|---|
| 466 | InRegs.h.ah = 0x0c; /* BIOS Write dot (xor mode). */
|
|---|
| 467 | InRegs.h.al = 0x81; /* Xor back with color 1. */
|
|---|
| 468 | InRegs.x.dx = i;
|
|---|
| 469 | InRegs.x.cx = 0;
|
|---|
| 470 | int86(0x10, &InRegs, &OutRegs);
|
|---|
| 471 | InRegs.h.bh = 0;
|
|---|
| 472 | InRegs.h.ah = 0x0c; /* BIOS Write dot (xor mode). */
|
|---|
| 473 | InRegs.h.al = 0x81; /* Xor back with color 1. */
|
|---|
| 474 | InRegs.x.dx = i;
|
|---|
| 475 | InRegs.x.cx = 1;
|
|---|
| 476 | int86(0x10, &InRegs, &OutRegs);
|
|---|
| 477 | }
|
|---|
| 478 | }
|
|---|
| 479 | break;
|
|---|
| 480 | #endif /* __MSDOS__ */
|
|---|
| 481 | #ifdef __SGI_GL__
|
|---|
| 482 | case GIF_DUMP_SGI_WINDOW:
|
|---|
| 483 | memcpy(ScanLine, GlblGifBufferPtr, ScreenXMax * sizeof(GifPixelType));
|
|---|
| 484 | GlblGifBufferPtr -= ScreenXMax;
|
|---|
| 485 | break;
|
|---|
| 486 | #endif /* __SGI_GL__ */
|
|---|
| 487 | #ifdef __X11__
|
|---|
| 488 | case GIF_DUMP_X_WINDOW:
|
|---|
| 489 | memcpy(ScanLine, GlblGifBufferPtr, ScreenXMax * sizeof(GifPixelType));
|
|---|
| 490 | GlblGifBufferPtr += ScreenXMax;
|
|---|
| 491 | break;
|
|---|
| 492 | #endif /* __X11__ */
|
|---|
| 493 | default:
|
|---|
| 494 | break;
|
|---|
| 495 | }
|
|---|
| 496 | }
|
|---|
| 497 |
|
|---|
| 498 | /******************************************************************************
|
|---|
| 499 | * Handle last GIF error. Try to close the file and free all allocated memory. *
|
|---|
| 500 | ******************************************************************************/
|
|---|
| 501 | static int HandleGifError(GifFileType *GifFile)
|
|---|
| 502 | {
|
|---|
| 503 | int i = GifLastError();
|
|---|
| 504 |
|
|---|
| 505 | if (EGifCloseFile(GifFile) == GIF_ERROR) {
|
|---|
| 506 | GifLastError();
|
|---|
| 507 | }
|
|---|
| 508 | return i;
|
|---|
| 509 | }
|
|---|
| 510 |
|
|---|
| 511 |
|
|---|
| 512 |
|
|---|
| 513 |
|
|---|
| 514 |
|
|---|
| 515 |
|
|---|
| 516 |
|
|---|
| 517 |
|
|---|
| 518 |
|
|---|
