www.pudn.com > giflib12.zip > RAW2GIF.C
/***************************************************************************** * "Gif-Lib" - Yet another gif library. * * * * Written by: Gershon Elber Ver 0.1, Jun. 1989 * ****************************************************************************** * Module to conver raw image into a GIF file. * * Options: * * -q : quite printing mode. * * -s Width Height : specifies size of raw image. * * -p ColorMapFile : specifies color map for ray image (see gifclrmp). * * -h : on line help. * ****************************************************************************** * History: * * 15 Oct 89 - Version 1.0 by Gershon Elber. * *****************************************************************************/ #ifdef __MSDOS__ #include#include #include #include #include #endif /* __MSDOS__ */ #include #include #include #include "getarg.h" #include "gif_lib.h" #define PROGRAM_NAME "Raw2Gif" #ifdef __MSDOS__ extern unsigned int _stklen = 16384; /* Increase default stack size. */ #endif /* __MSDOS__ */ #ifdef SYSV static char *VersionStr = "Gif library module,\t\tGershon Elber\n\ (C) Copyright 1989 Gershon Elber, Non commercial use only.\n"; static char *CtrlStr = "Raw2Gif q%- s!-Width|Height!d!d p%-ColorMapFile!s h%- RawFile!*s"; #else static char *VersionStr = PROGRAM_NAME GIF_LIB_VERSION " Gershon Elber, " __DATE__ ", " __TIME__ "\n" "(C) Copyright 1989 Gershon Elber, Non commercial use only.\n"; static char *CtrlStr = PROGRAM_NAME " q%- s!-Width|Height!d!d p%-ColorMapFile!s h%- RawFile!*s"; #endif /* SYSV */ static GifColorType EGAPallete[] = /* Default color map is EGA pallete. */ { { 0, 0, 0 }, /* 0. Black */ { 0, 0, 170 }, /* 1. Blue */ { 0, 170, 0 }, /* 2. Green */ { 0, 170, 170 }, /* 3. Cyan */ { 170, 0, 0 }, /* 4. Red */ { 170, 0, 170 }, /* 5. Magenta */ { 170, 170, 0 }, /* 6. Brown */ { 170, 170, 170 }, /* 7. LightGray */ { 85, 85, 85 }, /* 8. DarkGray */ { 85, 85, 255 }, /* 9. LightBlue */ { 85, 255, 85 }, /* 10. LightGreen */ { 85, 255, 255 }, /* 11. LightCyan */ { 255, 85, 85 }, /* 12. LightRed */ { 255, 85, 255 }, /* 13. LightMagenta */ { 255, 255, 85 }, /* 14. Yellow */ { 255, 255, 255 }, /* 15. White */ }; #define EGA_PALLETE_SIZE (sizeof(EGAPallete) / sizeof(GifColorType)) int Raw2Gif(int ImagwWidth, int ImagwHeight, GifColorType *ColorMap, int ColorMapSize); static int HandleGifError(GifFileType *GifFile); /****************************************************************************** * Interpret the command line, prepar global data and call the Gif routines. * ******************************************************************************/ void main(int argc, char **argv) { int Error, NumFiles, ImageWidth, ImageHeight, Dummy, Red, Green, Blue, ColorMapSize, InFileHandle, ImageSizeFlag = FALSE, ColorMapFlag = FALSE, HelpFlag = FALSE; char **FileName = NULL, *ColorMapFile; GifColorType *ColorMap; FILE *InColorMapFile; if ((Error = GAGetArgs(argc, argv, CtrlStr, &GifQuitePrint, &ImageSizeFlag, &ImageWidth, &ImageHeight, &ColorMapFlag, &ColorMapFile, &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(1); } if (HelpFlag) { fprintf(stderr, VersionStr); GAPrintHowTo(CtrlStr); exit(0); } if (ColorMapFlag) { /* Read color map from given file: */ if ((InColorMapFile = fopen(ColorMapFile, "rt")) == NULL) { GIF_MESSAGE("Failed to open COLOR MAP file (not exists!?)."); exit(2); } if ((ColorMap = (GifColorType *) malloc(sizeof(GifColorType) * 255)) /* Biggest map. */ == NULL) { GIF_MESSAGE("Failed to allocate bitmap, aborted."); exit(3); } for (ColorMapSize = 0; ColorMapSize < 256 && !feof(InColorMapFile); ColorMapSize++) { fscanf(InColorMapFile, "%3d %3d %3d %3d\n", &Dummy, &Red, &Green, &Blue); ColorMap[ColorMapSize].Red = Red; ColorMap[ColorMapSize].Green = Green; ColorMap[ColorMapSize].Blue = Blue; } } else { ColorMap = EGAPallete; ColorMapSize = EGA_PALLETE_SIZE; } if (NumFiles == 1) { #ifdef __MSDOS__ if ((InFileHandle = open(*FileName, O_RDONLY | O_BINARY)) == -1) { #else if ((InFileHandle = open(*FileName, O_RDONLY)) == -1) { #endif /* __MSDOS__ */ GIF_MESSAGE("Failed to open RAW image file (not exists!?)."); exit(2); } dup2(InFileHandle, 0); /* Make stdin from this file. */ } else { #ifdef __MSDOS__ setmode(0, O_BINARY); /* Make sure it is in binary mode. */ #endif /* __MSDOS__ */ } #ifdef __MSDOS__ setvbuf(stdin, NULL, _IOFBF, GIF_FILE_BUFFER_SIZE); #endif /* __MSDOS__ */ /* Conver Raw image from stdin to Gif file in stdout: */ Raw2Gif(ImageWidth, ImageHeight, ColorMap, ColorMapSize); } /****************************************************************************** * Convert Raw image (One byte per pixel) into Gif file. Raw data is read from * * stdin, and Gif is dumped to stdout. ImagwWidth times ImageHeight bytes are * * read. Color map is dumped from ColorMap. * ******************************************************************************/ int Raw2Gif(int ImageWidth, int ImageHeight, GifColorType *ColorMap, int ColorMapSize) { static int BitsPerPixelArray[] = { 2, 4 ,8, 16, 32, 64, 128, 256 }; int i, j, BitsPerPixel; static GifPixelType *ScanLine; GifFileType *GifFile; for (BitsPerPixel = 0; BitsPerPixel < 8 && BitsPerPixelArray[BitsPerPixel] != ColorMapSize; BitsPerPixel++); if (++BitsPerPixel > 8) { GIF_MESSAGE("Number of color map is NOT power of 2 up to 256."); exit(3); } if ((ScanLine = (GifPixelType *) malloc(sizeof(GifPixelType) * ImageWidth)) == NULL) { GIF_MESSAGE("Failed to allocate scan line, aborted."); exit(3); } if ((GifFile = EGifOpenFileHandle(1)) == NULL) { /* Gif to stdout. */ free((char *) ScanLine); return HandleGifError(GifFile); } if (EGifPutScreenDesc(GifFile, ImageWidth, ImageHeight, BitsPerPixel, 0, BitsPerPixel, ColorMap) == GIF_ERROR) { free((char *) ScanLine); return HandleGifError(GifFile); } if (EGifPutImageDesc(GifFile, 0, 0, ImageWidth, ImageHeight, FALSE, 1, NULL) == GIF_ERROR) { free((char *) ScanLine); return HandleGifError(GifFile); } /* Here it is - get one raw line from stdin, and dump to stdout Gif: */ GifQprintf("\n%s: Image 1 at (0, 0) [%dx%d]: ", PROGRAM_NAME, ImageWidth, ImageHeight); for (i = 0; i < ImageHeight; i++) { /* Note we assume here PixelSize == Byte, which is not necessarily */ /* so. If not - must read one byte at a time, and coerce to pixel. */ if (fread(ScanLine, 1, ImageWidth, stdin) != ImageWidth) { GIF_MESSAGE("RAW input file ended prematurely."); exit(3); } for (j = 0; j < ImageWidth; j++) if (ScanLine[j] >= ColorMapSize) GIF_MESSAGE("Warning: RAW data color > maximum color map entry."); if (EGifPutLine(GifFile, ScanLine, ImageWidth) == GIF_ERROR) { free((char *) ScanLine); return HandleGifError(GifFile); } GifQprintf("\b\b\b\b%-4d", i); } if (EGifCloseFile(GifFile) == GIF_ERROR) { free((char *) ScanLine); return HandleGifError(GifFile); } free((char *) ScanLine); return 0; } /****************************************************************************** * Handle last GIF error. Try to close the file and free all allocated memory. * ******************************************************************************/ static int HandleGifError(GifFileType *GifFile) { int i = GifLastError(); if (EGifCloseFile(GifFile) == GIF_ERROR) { GifLastError(); } return i; }