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G/UTIL/RAW2GIF.C
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254
G/UTIL/RAW2GIF.C
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/*****************************************************************************
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* "Gif-Lib" - Yet another gif library. *
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* *
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* Written by: Gershon Elber Ver 0.1, Jun. 1989 *
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******************************************************************************
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* Module to conver raw image into a GIF file. *
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* Options: *
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* -q : quite printing mode. *
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* -s Width Height : specifies size of raw image. *
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* -p ColorMapFile : specifies color map for ray image (see gifclrmp). *
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* -h : on line help. *
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******************************************************************************
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* History: *
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* 15 Oct 89 - Version 1.0 by Gershon Elber. *
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*****************************************************************************/
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#ifdef __MSDOS__
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#include <dos.h>
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#include <alloc.h>
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#include <stdlib.h>
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#include <graphics.h>
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#include <io.h>
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#endif /* __MSDOS__ */
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#include <stdio.h>
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#include <string.h>
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#include <fcntl.h>
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#include "getarg.h"
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#include "gif_lib.h"
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#define PROGRAM_NAME "Raw2Gif"
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#ifdef __MSDOS__
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extern unsigned int
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_stklen = 16384; /* Increase default stack size. */
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#endif /* __MSDOS__ */
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#ifdef SYSV
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static char *VersionStr =
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"Gif library module,\t\tGershon Elber\n\
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(C) Copyright 1989 Gershon Elber, Non commercial use only.\n";
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static char
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*CtrlStr = "Raw2Gif q%- s!-Width|Height!d!d p%-ColorMapFile!s h%- RawFile!*s";
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#else
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static char
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*VersionStr =
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PROGRAM_NAME
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GIF_LIB_VERSION
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" Gershon Elber, "
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__DATE__ ", " __TIME__ "\n"
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"(C) Copyright 1989 Gershon Elber, Non commercial use only.\n";
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static char
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*CtrlStr =
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PROGRAM_NAME
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" q%- s!-Width|Height!d!d p%-ColorMapFile!s h%- RawFile!*s";
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#endif /* SYSV */
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static GifColorType EGAPallete[] = /* Default color map is EGA pallete. */
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{
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{ 0, 0, 0 }, /* 0. Black */
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{ 0, 0, 170 }, /* 1. Blue */
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{ 0, 170, 0 }, /* 2. Green */
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{ 0, 170, 170 }, /* 3. Cyan */
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{ 170, 0, 0 }, /* 4. Red */
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{ 170, 0, 170 }, /* 5. Magenta */
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{ 170, 170, 0 }, /* 6. Brown */
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{ 170, 170, 170 }, /* 7. LightGray */
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{ 85, 85, 85 }, /* 8. DarkGray */
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{ 85, 85, 255 }, /* 9. LightBlue */
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{ 85, 255, 85 }, /* 10. LightGreen */
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{ 85, 255, 255 }, /* 11. LightCyan */
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{ 255, 85, 85 }, /* 12. LightRed */
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{ 255, 85, 255 }, /* 13. LightMagenta */
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{ 255, 255, 85 }, /* 14. Yellow */
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{ 255, 255, 255 }, /* 15. White */
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};
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#define EGA_PALLETE_SIZE (sizeof(EGAPallete) / sizeof(GifColorType))
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int Raw2Gif(int ImagwWidth, int ImagwHeight,
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GifColorType *ColorMap, int ColorMapSize);
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static int HandleGifError(GifFileType *GifFile);
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/******************************************************************************
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* Interpret the command line, prepar global data and call the Gif routines. *
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******************************************************************************/
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void main(int argc, char **argv)
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{
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int Error, NumFiles, ImageWidth, ImageHeight, Dummy, Red, Green, Blue,
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ColorMapSize, InFileHandle,
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ImageSizeFlag = FALSE, ColorMapFlag = FALSE, HelpFlag = FALSE;
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char **FileName = NULL, *ColorMapFile;
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GifColorType *ColorMap;
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FILE *InColorMapFile;
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if ((Error = GAGetArgs(argc, argv, CtrlStr, &GifQuitePrint,
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&ImageSizeFlag, &ImageWidth, &ImageHeight,
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&ColorMapFlag, &ColorMapFile,
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&HelpFlag,
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&NumFiles, &FileName)) != FALSE ||
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(NumFiles > 1 && !HelpFlag)) {
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if (Error)
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GAPrintErrMsg(Error);
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else if (NumFiles > 1)
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GIF_MESSAGE("Error in command line parsing - one GIF file please.");
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GAPrintHowTo(CtrlStr);
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exit(1);
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}
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if (HelpFlag) {
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fprintf(stderr, VersionStr);
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GAPrintHowTo(CtrlStr);
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exit(0);
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}
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if (ColorMapFlag) {
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/* Read color map from given file: */
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if ((InColorMapFile = fopen(ColorMapFile, "rt")) == NULL) {
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GIF_MESSAGE("Failed to open COLOR MAP file (not exists!?).");
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exit(2);
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}
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if ((ColorMap = (GifColorType *)
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malloc(sizeof(GifColorType) * 255)) /* Biggest map. */
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== NULL) {
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GIF_MESSAGE("Failed to allocate bitmap, aborted.");
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exit(3);
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}
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for (ColorMapSize = 0;
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ColorMapSize < 256 && !feof(InColorMapFile);
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ColorMapSize++) {
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fscanf(InColorMapFile, "%3d %3d %3d %3d\n",
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&Dummy, &Red, &Green, &Blue);
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ColorMap[ColorMapSize].Red = Red;
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ColorMap[ColorMapSize].Green = Green;
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ColorMap[ColorMapSize].Blue = Blue;
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}
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}
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else {
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ColorMap = EGAPallete;
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ColorMapSize = EGA_PALLETE_SIZE;
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}
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if (NumFiles == 1) {
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#ifdef __MSDOS__
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if ((InFileHandle = open(*FileName, O_RDONLY | O_BINARY)) == -1) {
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#else
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if ((InFileHandle = open(*FileName, O_RDONLY)) == -1) {
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#endif /* __MSDOS__ */
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GIF_MESSAGE("Failed to open RAW image file (not exists!?).");
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exit(2);
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}
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dup2(InFileHandle, 0); /* Make stdin from this file. */
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}
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else {
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#ifdef __MSDOS__
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setmode(0, O_BINARY); /* Make sure it is in binary mode. */
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#endif /* __MSDOS__ */
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}
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#ifdef __MSDOS__
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setvbuf(stdin, NULL, _IOFBF, GIF_FILE_BUFFER_SIZE);
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#endif /* __MSDOS__ */
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/* Conver Raw image from stdin to Gif file in stdout: */
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Raw2Gif(ImageWidth, ImageHeight, ColorMap, ColorMapSize);
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}
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/******************************************************************************
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* Convert Raw image (One byte per pixel) into Gif file. Raw data is read from *
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* stdin, and Gif is dumped to stdout. ImagwWidth times ImageHeight bytes are *
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* read. Color map is dumped from ColorMap. *
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******************************************************************************/
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int Raw2Gif(int ImageWidth, int ImageHeight,
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GifColorType *ColorMap, int ColorMapSize)
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{
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static int BitsPerPixelArray[] = { 2, 4 ,8, 16, 32, 64, 128, 256 };
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int i, j, BitsPerPixel;
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static GifPixelType *ScanLine;
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GifFileType *GifFile;
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for (BitsPerPixel = 0;
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BitsPerPixel < 8 && BitsPerPixelArray[BitsPerPixel] != ColorMapSize;
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BitsPerPixel++);
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if (++BitsPerPixel > 8) {
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GIF_MESSAGE("Number of color map is NOT power of 2 up to 256.");
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exit(3);
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}
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if ((ScanLine = (GifPixelType *) malloc(sizeof(GifPixelType) * ImageWidth))
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== NULL) {
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GIF_MESSAGE("Failed to allocate scan line, aborted.");
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exit(3);
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}
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if ((GifFile = EGifOpenFileHandle(1)) == NULL) { /* Gif to stdout. */
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free((char *) ScanLine);
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return HandleGifError(GifFile);
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}
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if (EGifPutScreenDesc(GifFile, ImageWidth, ImageHeight, BitsPerPixel,
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0, BitsPerPixel, ColorMap) == GIF_ERROR) {
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free((char *) ScanLine);
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return HandleGifError(GifFile);
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}
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if (EGifPutImageDesc(GifFile, 0, 0, ImageWidth, ImageHeight, FALSE, 1,
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NULL) == GIF_ERROR) {
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free((char *) ScanLine);
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return HandleGifError(GifFile);
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}
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/* Here it is - get one raw line from stdin, and dump to stdout Gif: */
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GifQprintf("\n%s: Image 1 at (0, 0) [%dx%d]: ",
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PROGRAM_NAME, ImageWidth, ImageHeight);
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for (i = 0; i < ImageHeight; i++) {
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/* Note we assume here PixelSize == Byte, which is not necessarily */
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/* so. If not - must read one byte at a time, and coerce to pixel. */
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if (fread(ScanLine, 1, ImageWidth, stdin) != ImageWidth) {
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GIF_MESSAGE("RAW input file ended prematurely.");
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exit(3);
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}
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for (j = 0; j < ImageWidth; j++)
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if (ScanLine[j] >= ColorMapSize)
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GIF_MESSAGE("Warning: RAW data color > maximum color map entry.");
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if (EGifPutLine(GifFile, ScanLine, ImageWidth) == GIF_ERROR) {
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free((char *) ScanLine);
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return HandleGifError(GifFile);
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}
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GifQprintf("\b\b\b\b%-4d", i);
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}
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if (EGifCloseFile(GifFile) == GIF_ERROR) {
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free((char *) ScanLine);
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return HandleGifError(GifFile);
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}
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free((char *) ScanLine);
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return 0;
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}
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/******************************************************************************
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* Handle last GIF error. Try to close the file and free all allocated memory. *
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******************************************************************************/
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static int HandleGifError(GifFileType *GifFile)
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{
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int i = GifLastError();
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if (EGifCloseFile(GifFile) == GIF_ERROR) {
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GifLastError();
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}
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return i;
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}
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