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/*
* Copyright (C) 2001 National Center for Supercomputing Applications
* All rights reserved.
*/
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include "gif.h"
int
main(int argv , char *argc[])
{
GIFTOMEM GifMemoryStruct;
GIFIMAGEDESC gifImageDesc;
FILE *fpGif;
/* replacing int32 with long */
long i, ImageCount;
long filesize;
BYTE *MemGif;
BYTE *StartPos;
/* VSNAMELENMAX is a carryover from HDF4 and is #defined to 256 in gif.h */
char GIFFileName[VSNAMELENMAX];
char HDFFileName[VSNAMELENMAX];
/*
* Initialize all GifMemoryStruct pointers to null to prevent hassles
* later on
*/
GifMemoryStruct.GifHeader = NULL;
GifMemoryStruct.GifImageDesc = NULL;
GifMemoryStruct.GifGraphicControlExtension = NULL;
GifMemoryStruct.GifPlainTextExtension = NULL;
GifMemoryStruct.GifApplicationExtension = NULL;
GifMemoryStruct.GifCommentExtension = NULL;
if (argv < 3) {
printf("\n\nWrong Usage. Use:\ngif2hdf <GIFFILE> <HDFFILE>\n\n");
return(-1);
}
strncpy(GIFFileName , argc[1] , VSNAMELENMAX - 1);
strncpy(HDFFileName , argc[2] , VSNAMELENMAX - 1);
GIFFileName[VSNAMELENMAX - 1] = '\0';
HDFFileName[VSNAMELENMAX - 1] = '\0';
if (!(fpGif = fopen(GIFFileName,"rb"))) {
printf("Unable to open GIF file for reading.\n");
printf("Filename (including path) must be less than %d charachters in length\n",
VSNAMELENMAX);
exit(-1);
}
/* Get the whole file into memory. Mem's much faster than I/O */
fseek(fpGif, 0L , 2);
filesize = ftell(fpGif);
fseek(fpGif, 0L , 0);
if (filesize == 0)
printf("File Size Zero");
if (!(MemGif = StartPos = (BYTE *)malloc((size_t)filesize))) {
printf("Out of memory");
exit (-1);
}
if (fread(MemGif,(size_t)filesize,1,fpGif) != 1) {
printf("Corrupted Input File");
exit(-1);
}
fseek(fpGif,0L,0);
/*
* Call Gif2Mem and break the whole file into parts. Gif2Mem also calls
* decompresses the images so we don't have to worry about that
*/
GifMemoryStruct = Gif2Mem(MemGif);
if (ferror(fpGif)) {
printf("File Stream Error\n\n");
exit(-1);
}
fclose(fpGif);
/*
* Call WriteHDF from here. Go ahead and change WriteHDF to write whatever
* format you want
*/
if (WriteHDF(GifMemoryStruct , argc[2] , argc[1]))
printf("HDF Write Error\n\n");
/* Free all buffers */
/* replacing int32 with long */
ImageCount = (long)((GifMemoryStruct.GifHeader)->ImageCount);
for(i = 0; i < ImageCount ; i++) {
gifImageDesc = *(GifMemoryStruct.GifImageDesc[i]);
if (gifImageDesc.Image != NULL)
free(gifImageDesc.Image);
if (GifMemoryStruct.GifGraphicControlExtension[i] != NULL)
free(GifMemoryStruct.GifGraphicControlExtension[i]);
}
free(StartPos);
free(GifMemoryStruct.GifHeader);
free(GifMemoryStruct.GifApplicationExtension);
return 0;
}
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