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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Copyright by The HDF Group. *
* Copyright by the Board of Trustees of the University of Illinois. *
* All rights reserved. *
* *
* This file is part of HDF. The full HDF copyright notice, including *
* terms governing use, modification, and redistribution, is contained in *
* the COPYING file, which can be found at the root of the source code *
* distribution tree, or in https://support.hdfgroup.org/ftp/HDF/releases/. *
* If you do not have access to either file, you may request a copy from *
* help@hdfgroup.org. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
#include "hdf.h"
#include "hfile_priv.h"
/* Size of the file buffer to copy through */
#define MAX_FILE_BUF 16384
static uint8 file_buf[MAX_FILE_BUF]; /* size of the buffer to copy through */
static void usage(void);
static void
usage(void)
{
printf("USAGE: hdf2jpeg <input HDF file> <output JPEG file template>\n");
printf(" <input HDF file> : the HDF file to extract JPEG images from\n");
printf(" <output JPEG file template> : template for the name \n");
printf(" of the JPEG file(s) to contain\n");
printf(" the images extracted from the HDF\n");
printf(" file. The name may contain\n");
printf(" the special character: '#'\n");
printf(" The '#' character will be replaced\n");
printf(" by the reference number of the HDF\n");
printf(" image being extracted.\n");
printf(" The default format is: file.#.jpg\n");
exit(1);
} /* end usage() */
int
main(int argc, char *argv[])
{
int32 fid, aid, data_aid;
int n, status;
FILE *jfif_file; /* file ptr for the JFIF file to create */
dd_t image_desc;
intn jfif_formatted = 0; /* whether the jfif filename has a'#' in it */
char jfif_name[128]; /* name of the JPEG file to create */
char scratch[128]; /* name of the JPEG file to create */
char *jfif_char; /* location of the '#' char */
/*
* If a file name has not been supplied print the usage message
*/
if (argc < 3)
usage();
if ((jfif_char = (char *)strchr(argv[2], '#')) == NULL)
strcpy(jfif_name, argv[2]); /* copy the JPEG file name */
else {
if (jfif_char > argv[2]) { /* copy initial portion */
strncpy(jfif_name, argv[2], (size_t)(jfif_char - argv[2]));
jfif_name[jfif_char - argv[2]] = '\0'; /* terminate the string */
} /* end if */
strcat(jfif_name, "%d"); /* append formatter */
strcat(jfif_name, jfif_char + 1); /* complete the name */
jfif_formatted = TRUE;
} /* end else */
fid = Hopen(argv[1], DFACC_READ, -1);
if (fid == FAIL) {
printf("Error opening HDF file: %s\n", argv[1]);
exit(1);
} /* end if */
n = 0;
aid = Hstartread(fid, DFTAG_JPEG, DFREF_WILDCARD);
if (aid != FAIL) {
do {
n++; /* increment the number of images found */
Hinquire(aid, NULL, &image_desc.tag, &image_desc.ref, &image_desc.length, &image_desc.offset,
NULL, NULL, NULL);
if (Hread(aid, image_desc.length, file_buf) != image_desc.length) {
printf("Error reading %d'th JPEG image from HDF file\n", n);
exit(1);
} /* end if */
if (jfif_formatted == TRUE) {
sprintf(scratch, jfif_name, image_desc.ref);
jfif_file = fopen(scratch, "wb");
} /* end if */
else {
jfif_file = fopen(jfif_name, "wb");
} /* end else */
if (jfif_file == NULL) {
printf("error opening JFIF output file\n");
exit(1);
} /* end if */
if (fwrite(file_buf, sizeof(uint8), (size_t)image_desc.length, jfif_file) !=
(size_t)image_desc.length) {
printf("Error writing to JPEG file\n");
exit(1);
} /* end if */
data_aid = Hstartread(fid, DFTAG_CI, image_desc.ref);
Hinquire(data_aid, NULL, &image_desc.tag, &image_desc.ref, &image_desc.length, &image_desc.offset,
NULL, NULL, NULL);
while (image_desc.length > MAX_FILE_BUF) {
if (Hread(data_aid, MAX_FILE_BUF, file_buf) != (int32)(MAX_FILE_BUF)) {
printf("Error reading JPEG image data from HDF file\n");
exit(1);
} /* end if */
if (fwrite(file_buf, sizeof(uint8), MAX_FILE_BUF, jfif_file) != MAX_FILE_BUF) {
printf("Error writing JPEG image data\n");
exit(1);
} /* end if */
image_desc.length -= MAX_FILE_BUF;
} /* end while */
if (image_desc.length > 0) {
if (Hread(data_aid, image_desc.length, file_buf) != (int32)(image_desc.length)) {
printf("Error reading JPEG image data from HDF file\n");
exit(1);
} /* end if */
if (fwrite(file_buf, sizeof(uint8), (size_t)image_desc.length, jfif_file) !=
(size_t)image_desc.length) {
printf("Error writing JPEG image data\n");
exit(1);
} /* end if */
} /* end if */
Hendaccess(data_aid); /* let go of the JPEG data AID */
fclose(jfif_file); /* close the JFIF file */
status = Hnextread(aid, DFTAG_JPEG, DFREF_WILDCARD, DF_CURRENT);
} while (status == SUCCEED);
Hendaccess(aid);
} /* end if */
aid = Hstartread(fid, DFTAG_GREYJPEG, DFREF_WILDCARD);
if (aid != FAIL) {
do {
n++; /* increment the number of images found */
Hinquire(aid, NULL, &image_desc.tag, &image_desc.ref, &image_desc.length, &image_desc.offset,
NULL, NULL, NULL);
if (Hread(aid, image_desc.length, file_buf) != image_desc.length) {
printf("Error reading %d'th JPEG image from HDF file\n", n);
exit(1);
} /* end if */
if (jfif_formatted == TRUE) {
sprintf(scratch, jfif_name, image_desc.ref);
jfif_file = fopen(scratch, "wb");
} /* end if */
else {
jfif_file = fopen(jfif_name, "wb");
} /* end else */
if (jfif_file == NULL) {
printf("error opening JFIF output file\n");
exit(1);
} /* end if */
if (fwrite(file_buf, sizeof(uint8), (size_t)image_desc.length, jfif_file) !=
(size_t)image_desc.length) {
printf("Error writing to JPEG file\n");
exit(1);
} /* end if */
data_aid = Hstartread(fid, DFTAG_CI, image_desc.ref);
Hinquire(data_aid, NULL, &image_desc.tag, &image_desc.ref, &image_desc.length, &image_desc.offset,
NULL, NULL, NULL);
while (image_desc.length > MAX_FILE_BUF) {
if (Hread(data_aid, MAX_FILE_BUF, file_buf) != (int32)(MAX_FILE_BUF)) {
printf("Error reading JPEG image data from HDF file\n");
exit(1);
} /* end if */
if (fwrite(file_buf, sizeof(uint8), MAX_FILE_BUF, jfif_file) != (size_t)MAX_FILE_BUF) {
printf("Error writing JPEG image data\n");
exit(1);
} /* end if */
image_desc.length -= MAX_FILE_BUF;
} /* end while */
if (image_desc.length > 0) {
if (Hread(data_aid, image_desc.length, file_buf) != (int32)(image_desc.length)) {
printf("Error reading JPEG image data from HDF file\n");
exit(1);
} /* end if */
if (fwrite(file_buf, sizeof(uint8), (size_t)image_desc.length, jfif_file) !=
(size_t)image_desc.length) {
printf("Error writing JPEG image data\n");
exit(1);
} /* end if */
} /* end if */
Hendaccess(data_aid); /* let go of the JPEG data AID */
fclose(jfif_file); /* close the JFIF file */
status = Hnextread(aid, DFTAG_GREYJPEG, DFREF_WILDCARD, DF_CURRENT);
} while (status == SUCCEED);
Hendaccess(aid);
} /* end if */
/* Handle new-style JPEG5 images */
aid = Hstartread(fid, DFTAG_JPEG5, DFREF_WILDCARD);
if (aid != FAIL) {
do {
Hinquire(aid, NULL, &image_desc.tag, &image_desc.ref, &image_desc.length, &image_desc.offset,
NULL, NULL, NULL);
n++; /* increment the number of images found */
if (jfif_formatted == TRUE) {
sprintf(scratch, jfif_name, image_desc.ref);
jfif_file = fopen(scratch, "wb");
} /* end if */
else {
jfif_file = fopen(jfif_name, "wb");
} /* end else */
if (jfif_file == NULL) {
printf("error opening JFIF output file\n");
exit(1);
} /* end if */
data_aid = Hstartread(fid, DFTAG_CI, image_desc.ref);
Hinquire(data_aid, NULL, &image_desc.tag, &image_desc.ref, &image_desc.length, &image_desc.offset,
NULL, NULL, NULL);
while (image_desc.length > MAX_FILE_BUF) {
if (Hread(data_aid, MAX_FILE_BUF, file_buf) != (int32)(MAX_FILE_BUF)) {
printf("Error reading JPEG image data from HDF file\n");
exit(1);
} /* end if */
if (fwrite(file_buf, sizeof(uint8), MAX_FILE_BUF, jfif_file) != MAX_FILE_BUF) {
printf("Error writing JPEG image data\n");
exit(1);
} /* end if */
image_desc.length -= MAX_FILE_BUF;
} /* end while */
if (image_desc.length > 0) {
if (Hread(data_aid, image_desc.length, file_buf) != (int32)(image_desc.length)) {
printf("Error reading JPEG image data from HDF file\n");
exit(1);
} /* end if */
if (fwrite(file_buf, sizeof(uint8), (size_t)image_desc.length, jfif_file) !=
(size_t)image_desc.length) {
printf("Error writing JPEG image data\n");
exit(1);
} /* end if */
} /* end if */
Hendaccess(data_aid); /* let go of the JPEG data AID */
fclose(jfif_file); /* close the JFIF file */
status = Hnextread(aid, DFTAG_JPEG5, DFREF_WILDCARD, DF_CURRENT);
} while (status == SUCCEED);
Hendaccess(aid);
} /* end if */
/* Handle new-style GREYJPEG5 images */
aid = Hstartread(fid, DFTAG_GREYJPEG5, DFREF_WILDCARD);
if (aid != FAIL) {
do {
n++; /* increment the number of images found */
Hinquire(aid, NULL, &image_desc.tag, &image_desc.ref, &image_desc.length, &image_desc.offset,
NULL, NULL, NULL);
if (jfif_formatted == TRUE) {
sprintf(scratch, jfif_name, image_desc.ref);
jfif_file = fopen(scratch, "wb");
} /* end if */
else {
jfif_file = fopen(jfif_name, "wb");
} /* end else */
if (jfif_file == NULL) {
printf("error opening JFIF output file\n");
exit(1);
} /* end if */
data_aid = Hstartread(fid, DFTAG_CI, image_desc.ref);
Hinquire(data_aid, NULL, &image_desc.tag, &image_desc.ref, &image_desc.length, &image_desc.offset,
NULL, NULL, NULL);
while (image_desc.length > MAX_FILE_BUF) {
if (Hread(data_aid, MAX_FILE_BUF, file_buf) != (int32)(MAX_FILE_BUF)) {
printf("Error reading JPEG image data from HDF file\n");
exit(1);
} /* end if */
if (fwrite(file_buf, sizeof(uint8), MAX_FILE_BUF, jfif_file) != (size_t)MAX_FILE_BUF) {
printf("Error writing JPEG image data\n");
exit(1);
} /* end if */
image_desc.length -= MAX_FILE_BUF;
} /* end while */
if (image_desc.length > 0) {
if (Hread(data_aid, image_desc.length, file_buf) != (int32)(image_desc.length)) {
printf("Error reading JPEG image data from HDF file\n");
exit(1);
} /* end if */
if (fwrite(file_buf, sizeof(uint8), (size_t)image_desc.length, jfif_file) !=
(size_t)image_desc.length) {
printf("Error writing JPEG image data\n");
exit(1);
} /* end if */
} /* end if */
Hendaccess(data_aid); /* let go of the JPEG data AID */
fclose(jfif_file); /* close the JFIF file */
status = Hnextread(aid, DFTAG_GREYJPEG5, DFREF_WILDCARD, DF_CURRENT);
} while (status == SUCCEED);
Hendaccess(aid);
} /* end if */
/* Close the HDF file */
status = Hclose(fid);
if (n == 0)
printf("Error, no JPEG images found in HDF file\n");
return (0);
}
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