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-rw-r--r--tools/gifconv/hdf2gif.c404
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diff --git a/tools/gifconv/hdf2gif.c b/tools/gifconv/hdf2gif.c
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--- a/tools/gifconv/hdf2gif.c
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-/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
- * Copyright by the Board of Trustees of the University of Illinois. *
- * All rights reserved. *
- * *
- * This file is part of HDF5. The full HDF5 copyright notice, including *
- * terms governing use, modification, and redistribution, is contained in *
- * the files COPYING and Copyright.html. COPYING can be found at the root *
- * of the source code distribution tree; Copyright.html can be found at the *
- * root level of an installed copy of the electronic HDF5 document set and *
- * is linked from the top-level documents page. It can also be found at *
- * http://hdf.ncsa.uiuc.edu/HDF5/doc/Copyright.html. If you do not have *
- * access to either file, you may request a copy from hdfhelp@ncsa.uiuc.edu. *
- * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
-
-/*
- * NOTES:
- * 04/01 - 04/10: been working on it a lot. I think it does gif89 images just
- * fine with palettes. So that's cool. Putting in multiple
- * images and animation support right now
- * 03/29: For some reason I can write .GIF files which IE will open and see
- * but kodak imaging does not like. I'm sure its a problem with the GIF
- * file, I can't figure out what.
- * 03/17: Explicitely deallocate the GIFTOMEM* struct in the main loop.
- * Check for both success and failure conditions
- */
-
-#include <stdio.h>
-#include <assert.h>
-#include "gif.h"
-
-#define MAX_FILE_LEN 256
-#define MAX_NUMBER_IMAGES 50
-
-int EndianOrder;
-
-#ifdef NOT_USED
-static void
-PutByte(BYTE b , FILE *fpGif)
-{
- if (fputc(b , fpGif) == EOF) {
- printf("File Writing Error, cannot continue");
- exit(-1);
- }
-}
-#endif /* NOT_USED */
-
-static void
-putword(int w, FILE *fp)
-{
- /* writes a 16-bit integer in GIF order (LSB first) */
- fputc(w &0xff, fp);
- fputc((w>>8)&0xff,fp);
-}
-
-static void
-usage(void)
-{
- printf("Usage: h52gif <h5_file> <gif_file> -i <h5_image> [-p <h5_palette>]\n");
- printf("h52gif expects *at least* one h5_image.\n");
- printf("You may repeat -i <h5_image> [-p <h5_palette>] at most 50 times\n");
- printf("(maximum of 50 images).\n");
-}
-
-FILE *fpGif = NULL;
-int main(int argc , char **argv)
-{
-
-
- hsize_t dim_sizes[2];
- BYTE *Image;
-
- /* compression structs */
- CHAR *HDFName = NULL;
- CHAR *GIFName = NULL;
-
- /* reference variables */
- int has_local_palette; /* treated as a flag */
-
- BYTE* b;
-
- BYTE GlobalPalette[256][3];
- BYTE Red[256];
- BYTE Green[256];
- BYTE Blue[256];
-
- int RWidth, RHeight;
-#ifdef UNUSED
- int LeftOfs, TopOfs;
- int CountDown;
- int curx , cury;
- int w,h;
-#endif /* UNUSED */
- int ColorMapSize, InitCodeSize, Background, BitsPerPixel;
- int j,nc;
- int i;
- int numcols = 256;
- int time_out = 0; /* time between two images in the animation */
- int n_images , idx;
-
- BYTE pc2nc[256] , r1[256] , g1[256] , b1[256];
-
- /* initial stuff */
- int number_of_images = 0;
- int arg_index = 2;
- int bool_is_image = 0; /* 0 = false , 1 = true */
- int bool_is_palette = 0;
- CHAR* image_name_arr[MAX_NUMBER_IMAGES];
- CHAR* pal_name_arr[MAX_NUMBER_IMAGES];
-
- if (argc < 5) {
- /* they didn't supply at least one image -- bail */
- usage();
- return 0;
- }
-
- memset(image_name_arr , 0 , MAX_NUMBER_IMAGES);
- memset(pal_name_arr , 0 , MAX_NUMBER_IMAGES);
-
- HDFName = (CHAR *)malloc (strlen(argv[1]) + 1);
- GIFName = (CHAR *)malloc (strlen(argv[2]) + 1);
-
- if (strlen(argv[1] + 1) > MAX_FILE_LEN || strlen(argv[2] + 1) > MAX_FILE_LEN) {
- /* supplied file names are too long. bail. */
- usage();
- printf("Supplied filenames exceed maximum length of 256 bytes\n");
- }
-
- strcpy(HDFName , argv[1]);
- strcpy(GIFName , argv[2]);
-
- /* get the options */
- while (arg_index++ < argc - 1 && number_of_images < MAX_NUMBER_IMAGES) {
- if (!strcmp(argv[arg_index] , "-i")) {
- bool_is_image = 1;
- continue;
- }
-
- if (!strcmp(argv[arg_index] , "-p")) {
- bool_is_palette = 1;
- continue;
- }
-
- if (!strcmp(argv[arg_index] , "-a")) {
- time_out = 10;
- continue;
- }
-
- if (bool_is_image) {
- /* this is an image */
- /* allocate space to store the image name */
- image_name_arr[number_of_images] = (CHAR*) malloc(strlen(argv[arg_index] + 1));
- strcpy(image_name_arr[number_of_images] , argv[arg_index]);
-
- /* make the palette array for this NULL */
- pal_name_arr[number_of_images] = NULL;
- number_of_images++;
- bool_is_image = 0;
- continue;
- }
-
- if (bool_is_palette) {
- /* this is a palette */
- /* allocate space to store the pal name */
- /* the palette was probably allocated for a previous image */
- pal_name_arr[number_of_images-1] = (CHAR*) malloc(strlen(argv[arg_index] + 1));
- strcpy(pal_name_arr[number_of_images - 1], argv[arg_index]);
- bool_is_palette = 0;
- continue;
- }
-
- /* oops. This was not meant to happen */
- usage();
-
-#if 0
- while (number_of_images--) {
- cleanup(image_name_arr[number_of_images]);
- cleanup(pal_name_arr[number_of_images]);
- }
-#endif /* 0 */
-
- return -1;
- }
-
- /* we shall always have a palette - read hdf will see to that */
- has_local_palette = true;
-
- /* Do Endian Order testing and set Endian Order */
- idx = 0x0001;
- b = (BYTE *) &idx;
- EndianOrder = (b[0] ? 1:0);
-
- if (!(fpGif = fopen(GIFName , "wb"))) {
- printf("Error opening gif file for output. Aborting.\n");
- return -1;
- }
-
- /* hardwire n_images to 1 for now. */
- n_images = number_of_images;
-
- Background = 0;
- for (idx = 0 ; idx < n_images ; idx++) {
- /* try to read the image and the palette */
-
- /*
- * Lots of funky stuff to support multiple images has been taken off.
- * Just in case you're extending code, here's what you need to do in
- * short: figure out if there is a global palette or not, if there is
- * one store that one only. If they are all local or a combination of
- * local and global palettes, you will have to write the global
- * palette out and then independantly write the smaller local palettes
- */
- if (ReadHDF(&Image, GlobalPalette, dim_sizes, HDFName,
- image_name_arr[idx], pal_name_arr[idx]) < 0) {
- fprintf(stderr , "Unable to read image %s from HDF file %s\n",image_name_arr[idx],HDFName);
- return -1;
- }
-
- assert(dim_sizes[0]==(hsize_t)((int)dim_sizes[0]));
- assert(dim_sizes[1]==(hsize_t)((int)dim_sizes[1]));
- RWidth = (int)dim_sizes[1];
- RHeight = (int)dim_sizes[0];
-#ifdef UNUSED
- w = dim_sizes[1];
- h = dim_sizes[0];
-
- LeftOfs = TopOfs = 0;
-#endif /* UNUSED */
-
-
- /*
- * If the first image does not have a palette, I make my own global
- * color table Obviously this is not the best thing to do, better
- * steps would be:
- *
- * 1. Check for either a global palette or a global attribute called
- * palette
- * 2. Check for palettes in any of the other images.
- */
- if (!has_local_palette) {
- for (i = 0 ; i < 256 ; i++) {
- Red[i] = 255 - i;
- Green[i] = 255 - i;
- Blue[i] = 255 - i;
- }
- } else {
- for (i = 0 ; i < 256 ; i++){
- Red[i] = GlobalPalette[i][0];
- Green[i] = GlobalPalette[i][1];
- Blue[i] = GlobalPalette[i][2];
- }
- }
-
- for (i = 0; i < 256; i++) {
- pc2nc[i] = r1[i] = g1[i] = b1[i] = 0;
- }
-
- /* compute number of unique colors */
- nc = 0;
-
- for (i = 0; i < numcols; i++) {
- /* see if color #i is already used */
- for (j = 0; j < i; j++) {
- if (Red[i] == Red[j] && Green[i] == Green[j] && Blue[i] == Blue[j])
- break;
- }
-
- if (j==i) {
- /* wasn't found */
- pc2nc[i] = nc;
- r1[nc] = Red[i];
- g1[nc] = Green[i];
- b1[nc] = Blue[i];
- nc++;
- } else {
- pc2nc[i] = pc2nc[j];
- }
- }
-
- /* figure out 'BitsPerPixel' */
- for (i = 1; i < 8; i++) {
- if ((1<<i) >= nc)
- break;
- }
-
- BitsPerPixel = i;
- ColorMapSize = 1 << BitsPerPixel;
-
-#ifdef UNUSED
- CountDown = w * h; /* # of pixels we'll be doing */
-#endif /* UNUSED */
-
- if (BitsPerPixel <= 1)
- InitCodeSize = 2;
- else
- InitCodeSize = BitsPerPixel;
-
-#ifdef UNUSED
- curx = cury = 0;
-#endif /* UNUSED */
-
- if (!fpGif) {
- fprintf(stderr, "WriteGIF: file not open for writing\n" );
- return (1);
- }
-
- /*
- * If it is the first image we do all the header stuff that isn't
- * required for the rest of the images.
- */
- if (idx == 0) {
- /* Write out the GIF header and logical screen descriptor */
- if (n_images > 1) {
- fwrite("GIF89a", sizeof( char ), 6, fpGif); /* the GIF magic number */
- } else {
- fwrite("GIF87a", sizeof( char ), 6, fpGif); /* the GIF magic number */
- }
-
- putword(RWidth, fpGif); /* screen descriptor */
- putword(RHeight, fpGif);
-
- i = 0x00; /* No, there is no color map */
- i |= (8-1)<<4; /* OR in the color resolution (hardwired 8) */
- i |= (BitsPerPixel - 1); /* OR in the # of bits per pixel */
- fputc(i,fpGif);
-
- fputc(Background,fpGif); /* background color */
- fputc(0, fpGif); /* future expansion byte */
-
- /*
- * If loop_times is 0 , put in the application extension to make
- * the gif anime loop indefinitely
- */
- if (time_out > 0) {
- fputc(0x21 , fpGif);
- fputc(0xFF , fpGif);
- fputc(11 , fpGif);
- fwrite("NETSCAPE2.0" , 1 , 11 , fpGif);
- fputc(3 , fpGif);
- fputc(1 , fpGif);
- fputc(0 , fpGif);
- fputc(0 , fpGif);
- fputc(0 , fpGif);
- }
- }
-
- if (n_images > 1) {
- /* write a graphic control block */
- fputc(0x21 , fpGif);
- fputc(0xF9 , fpGif);
- fputc(4 , fpGif);
- fputc(4 , fpGif);
- putword(time_out , fpGif);
- fputc(255, fpGif);
- fputc(0 , fpGif);
- }
-
- /*
- * Put Image Descriptor
- * Hardwiring Left Offset and Top Offset to 0x00
- */
- fputc(0x2c , fpGif);
- putword(0x00 , fpGif);
- putword(0x00 , fpGif);
- putword(RWidth , fpGif);
- putword(RHeight , fpGif);
-
- /* since we always have a local color palette ... */
- fputc((0x80 | (BitsPerPixel - 1)) , fpGif);
-
- for (i = 0; i < ColorMapSize; i++) {
- /* write out Global colormap */
- fputc(r1[i], fpGif);
- fputc(g1[i], fpGif);
- fputc(b1[i], fpGif);
- }
-
- fputc(InitCodeSize , fpGif);
-
- i = hdfWriteGIF(fpGif , Image , 0 , (int)dim_sizes[0] ,
- (int)dim_sizes[1] , r1, g1 , b1 , pc2nc , 256 , 8 ,
- BitsPerPixel);
- fputc(0x00, fpGif);
- free(Image);
- }
-
- if (fputc(';',fpGif) == EOF) {
- /* Write GIF file terminator */
- fprintf(stderr , "Error!");
- return -1;
- }
-
- fclose(fpGif);
-
-#if 0
- while(number_of_images--) {
- if (image_name_arr[number_of_images])
- free(image_name_arr[number_of_images]);
- if (pal_name_arr[number_of_images])
- free(pal_name_arr[number_of_images]);
- }
-#endif /* 0 */
-
- return 0;
-}
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