diff options
Diffstat (limited to 'giflib-4.1.6/util/gifclrmp.c')
| -rw-r--r-- | giflib-4.1.6/util/gifclrmp.c | 361 |
1 files changed, 0 insertions, 361 deletions
diff --git a/giflib-4.1.6/util/gifclrmp.c b/giflib-4.1.6/util/gifclrmp.c deleted file mode 100644 index e24e091..0000000 --- a/giflib-4.1.6/util/gifclrmp.c +++ /dev/null @@ -1,361 +0,0 @@ -/***************************************************************************** -* "Gif-Lib" - Yet another gif library. * -* * -* Written by: Gershon Elber Ver 0.1, Jul. 1989 * -****************************************************************************** -* Program to modify GIF file color map(s). Images are not modified at all. * -* Options: * -* -q : quiet printing mode. * -* -s : save screen color map (unless -i - see below), to stdout. * -* -l colormap.file : substitute given colormap.file colormap into screen * -* colormap (unless -i - see below). * -* -g correction : apply gamma correction to the screen colormap (unless -i - * -* see below). * -* -i n : select image number n color map instead of screen map for above * -* operations (n = 1 for first image). * -* -h : on-line help. * -* All color maps are ascii text files, with one line per color of the * -* form: index, Red color, Green color, Blue color - all in the range 0..255. * -* All color maps should be in the exact same length. * -****************************************************************************** -* History: * -* 17 Jul 89 - Version 1.0 by Gershon Elber. * -*****************************************************************************/ - -#ifdef HAVE_CONFIG_H -#include <config.h> -#endif - -#ifdef __MSDOS__ -#include <stdlib.h> -#include <alloc.h> -#endif /* __MSDOS__ */ - -#ifndef __MSDOS__ -#include <stdlib.h> -#endif -#include <math.h> -#include <stdio.h> -#include <ctype.h> -#include <string.h> -#include "gif_lib.h" -#include "getarg.h" - -#define PROGRAM_NAME "GifClrMp" - -#ifdef __MSDOS__ -extern unsigned int - _stklen = 16384; /* Increase default stack size. */ -#endif /* __MSDOS__ */ - -#ifdef SYSV -static char *VersionStr = - "Gif toolkit module,\t\tGershon Elber\n\ - (C) Copyright 1989 Gershon Elber.\n"; -static char - *CtrlStr = "GifClrMp q%- s%- t%-TranslationFile!s l%-ColorMapFile!s g%-Gamma!F i%-Image#!d h%- GifFile!*s"; -#else -static char - *VersionStr = - PROGRAM_NAME - GIF_LIB_VERSION - " Gershon Elber, " - __DATE__ ", " __TIME__ "\n" - "(C) Copyright 1989 Gershon Elber.\n"; -static char - *CtrlStr = - PROGRAM_NAME - " q%- s%- t%-TranslationFile!s l%-ColorMapFile!s g%-Gamma!F i%-Image#!d h%- GifFile!*s"; -#endif /* SYSV */ - -static int - SaveFlag = FALSE, - TranslateFlag = FALSE, - LoadFlag = FALSE, - GammaFlag = FALSE; -static - double Gamma = 1.0; -static - FILE *ColorFile = NULL; - FILE *TranslateFile = NULL; -static - GifPixelType Translation[256]; - -static ColorMapObject *ModifyColorMap(ColorMapObject *ColorMap); -static void QuitGifError(GifFileType *GifFileIn, GifFileType *GifFileOut); - -/****************************************************************************** -* Interpret the command line and scan the given GIF file. * -******************************************************************************/ -int main(int argc, char **argv) -{ - int Error, NumFiles, ExtCode, CodeSize, ImageNum = 0, - ImageNFlag = FALSE, ImageN, HelpFlag = FALSE, HasGIFOutput; - GifRecordType RecordType; - GifByteType *Extension, *CodeBlock; - char **FileName = NULL, *ColorFileName, *TranslateFileName; - GifFileType *GifFileIn = NULL, *GifFileOut = NULL; - - if ((Error = GAGetArgs(argc, argv, CtrlStr, &GifQuietPrint, &SaveFlag, - &TranslateFlag, &TranslateFileName, - &LoadFlag, &ColorFileName, - &GammaFlag, &Gamma, &ImageNFlag, &ImageN, - &HelpFlag, &NumFiles, &FileName)) != FALSE || - (NumFiles > 1 && !HelpFlag)) { - if (Error) - GAPrintErrMsg(Error); - else if (NumFiles > 1) - GIF_MESSAGE("Error in command line parsing - one GIF file please."); - GAPrintHowTo(CtrlStr); - exit(EXIT_FAILURE); - } - - if (HelpFlag) { - fprintf(stderr, VersionStr); - GAPrintHowTo(CtrlStr); - exit(EXIT_SUCCESS); - } - - if (SaveFlag + LoadFlag + GammaFlag + TranslateFlag > 1) - GIF_EXIT("Can not handle more than one of -s -l, -t, or -g at the same time."); - - if (NumFiles == 1) { - if ((GifFileIn = DGifOpenFileName(*FileName)) == NULL) - QuitGifError(GifFileIn, GifFileOut); - } - else { - /* Use stdin instead: */ - if ((GifFileIn = DGifOpenFileHandle(0)) == NULL) - QuitGifError(GifFileIn, GifFileOut); - } - - if (SaveFlag) { - /* We are dumping out the color map as text file to stdout: */ - ColorFile = stdout; - } - else { - if (TranslateFlag) { - /* We are loading new color map from specified file: */ - if ((TranslateFile = fopen(TranslateFileName, "rt")) == NULL) - GIF_EXIT("Failed to open specified color translation file."); - } - - if (LoadFlag) { - /* We are loading new color map from specified file: */ - if ((ColorFile = fopen(ColorFileName, "rt")) == NULL) - GIF_EXIT("Failed to open specified color map file."); - } - } - - if ((HasGIFOutput = (LoadFlag || TranslateFlag || GammaFlag)) != 0) { - /* Open stdout for GIF output file: */ - if ((GifFileOut = EGifOpenFileHandle(1)) == NULL) - QuitGifError(GifFileIn, GifFileOut); - } - - if (!ImageNFlag) { - /* We are suppose to modify the screen color map, so do it: */ - GifFileIn->SColorMap = ModifyColorMap(GifFileIn->SColorMap); - if (!HasGIFOutput) { - /* We can quit here, as we have the color map: */ - if (GifFileIn != NULL) DGifCloseFile(GifFileIn); - fclose(ColorFile); - exit(EXIT_SUCCESS); - } - } - /* And dump out its new possible repositioned screen information: */ - if (HasGIFOutput) - if (EGifPutScreenDesc(GifFileOut, - GifFileIn->SWidth, GifFileIn->SHeight, - GifFileIn->SColorResolution, GifFileIn->SBackGroundColor, - GifFileIn->SColorMap) == GIF_ERROR) - QuitGifError(GifFileIn, GifFileOut); - - /* Scan the content of the GIF file and load the image(s) in: */ - do { - if (DGifGetRecordType(GifFileIn, &RecordType) == GIF_ERROR) - QuitGifError(GifFileIn, GifFileOut); - - switch (RecordType) { - case IMAGE_DESC_RECORD_TYPE: - if (DGifGetImageDesc(GifFileIn) == GIF_ERROR) - QuitGifError(GifFileIn, GifFileOut); - if ((++ImageNum == ImageN) && ImageNFlag) { - /* We are suppose to modify this image color map, do it: */ - GifFileIn->SColorMap =ModifyColorMap(GifFileIn->SColorMap); - if (!HasGIFOutput) { - /* We can quit here, as we have the color map: */ - if (GifFileIn != NULL) DGifCloseFile(GifFileIn); - fclose(ColorFile); - exit(EXIT_SUCCESS); - } - } - if (HasGIFOutput) - if (EGifPutImageDesc(GifFileOut, - GifFileIn->Image.Left, GifFileIn->Image.Top, - GifFileIn->Image.Width, GifFileIn->Image.Height, - GifFileIn->Image.Interlace, - GifFileIn->Image.ColorMap) == GIF_ERROR) - QuitGifError(GifFileIn, GifFileOut); - - if (!TranslateFlag || (ImageNFlag && (ImageN != ImageNum))) - { - /* Now read image itself in decoded form as we don't */ - /* really care what we have there, and this is much */ - /* faster. */ - if (DGifGetCode(GifFileIn, &CodeSize, &CodeBlock) == GIF_ERROR) - QuitGifError(GifFileIn, GifFileOut); - if (HasGIFOutput) - if (EGifPutCode(GifFileOut, CodeSize, CodeBlock) == GIF_ERROR) - QuitGifError(GifFileIn, GifFileOut); - while (CodeBlock != NULL) { - if (DGifGetCodeNext(GifFileIn, &CodeBlock) == GIF_ERROR) - QuitGifError(GifFileIn, GifFileOut); - if (HasGIFOutput) - if (EGifPutCodeNext(GifFileOut, CodeBlock) == GIF_ERROR) - QuitGifError(GifFileIn, GifFileOut); - } - } - else /* we need to mung pixels intices */ - { - int i; - register GifPixelType *cp; - - GifPixelType *Line - = (GifPixelType *) malloc(GifFileIn->Image.Width * - sizeof(GifPixelType)); - for (i = 0; i < GifFileIn->Image.Height; i++) { - if (DGifGetLine(GifFileIn, Line,GifFileIn->Image.Width) - == GIF_ERROR) { - QuitGifError(GifFileIn, GifFileOut); - } - - /* translation step goes here */ - for (cp = Line; cp < Line+GifFileIn->Image.Width; cp++) - *cp = Translation[*cp]; - - if (EGifPutLine(GifFileOut, - Line, GifFileIn->Image.Width) - == GIF_ERROR) { - QuitGifError(GifFileIn, GifFileOut); - } - } - free((char *) Line); - } - break; - case EXTENSION_RECORD_TYPE: - /* Skip any extension blocks in file: */ - if (DGifGetExtension(GifFileIn, &ExtCode, &Extension) == GIF_ERROR) - QuitGifError(GifFileIn, GifFileOut); - if (HasGIFOutput) - if (EGifPutExtension(GifFileOut, ExtCode, Extension[0], - Extension) == GIF_ERROR) - QuitGifError(GifFileIn, GifFileOut); - - /* No support to more than one extension blocks, so discard: */ - while (Extension != NULL) { - if (DGifGetExtensionNext(GifFileIn, &Extension) == GIF_ERROR) - QuitGifError(GifFileIn, GifFileOut); - } - break; - case TERMINATE_RECORD_TYPE: - break; - default: /* Should be traps by DGifGetRecordType. */ - break; - } - } - while (RecordType != TERMINATE_RECORD_TYPE); - - if (DGifCloseFile(GifFileIn) == GIF_ERROR) - QuitGifError(GifFileIn, GifFileOut); - if (HasGIFOutput) - if (EGifCloseFile(GifFileOut) == GIF_ERROR) - QuitGifError(GifFileIn, GifFileOut); - - return 0; -} - -/****************************************************************************** -* Modify the given colormap according to global variables setting. * -******************************************************************************/ -static ColorMapObject *ModifyColorMap(ColorMapObject *ColorMap) -{ - int i, Dummy, Red, Green, Blue, Max = 0; - double Gamma1; - - if (SaveFlag) { - /* Save this color map to ColorFile: */ - for (i = 0; i < ColorMap->ColorCount; i++) - fprintf(ColorFile, "%3d %3d %3d %3d\n", i, - ColorMap->Colors[i].Red, - ColorMap->Colors[i].Green, - ColorMap->Colors[i].Blue); - return(ColorMap); - } - else if (LoadFlag) { - /* Read the color map in ColorFile into this color map: */ - for (i = 0; i < ColorMap->ColorCount; i++) { - if (feof(ColorFile)) - GIF_EXIT("Color file to load color map from, too small."); - fscanf(ColorFile, "%3d %3d %3d %3d\n", &Dummy, &Red, &Green, &Blue); - ColorMap->Colors[i].Red = Red; - ColorMap->Colors[i].Green = Green; - ColorMap->Colors[i].Blue = Blue; - } - return(ColorMap); - } - else if (GammaFlag) { - /* Apply gamma correction to this color map: */ - Gamma1 = 1.0 / Gamma; - for (i = 0; i < ColorMap->ColorCount; i++) { - ColorMap->Colors[i].Red = - ((int) (255 * pow(ColorMap->Colors[i].Red / 255.0, Gamma1))); - ColorMap->Colors[i].Green = - ((int) (255 * pow(ColorMap->Colors[i].Green / 255.0, Gamma1))); - ColorMap->Colors[i].Blue = - ((int) (255 * pow(ColorMap->Colors[i].Blue / 255.0, Gamma1))); - } - return(ColorMap); - } - else if (TranslateFlag) { - ColorMapObject *NewMap; - - /* Read the translation table in TranslateFile: */ - for (i = 0; i < ColorMap->ColorCount; i++) { - int tmp; - if (feof(TranslateFile)) - GIF_EXIT("Color file to load color map from, too small."); - fscanf(TranslateFile, "%3d %3d\n", &Dummy, &tmp); - Translation[i] = tmp; - if (Translation[i] > Max) - Max = Translation[i]; - } - - if ((NewMap = MakeMapObject(1 << BitSize(Max+1), NULL)) == NULL) - GIF_EXIT("Out of memory while allocating color map!"); - - /* Apply the translation; we'll do it to the pixels, too */ - for (i = 0; i < ColorMap->ColorCount; i++) { - NewMap->Colors[i] = ColorMap->Colors[Translation[i]]; - } - - return(NewMap); - } - else - { - GIF_EXIT("Nothing to do!"); - return(ColorMap); - } -} - -/****************************************************************************** -* Close both input and output file (if open), and exit. * -******************************************************************************/ -static void QuitGifError(GifFileType *GifFileIn, GifFileType *GifFileOut) -{ - PrintGifError(); - if (GifFileIn != NULL) DGifCloseFile(GifFileIn); - if (GifFileOut != NULL) EGifCloseFile(GifFileOut); - exit(EXIT_FAILURE); -} - |