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//
// Copyright 2006 by Johannes Hofmann
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Library General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Library General Public License for more details.
//
// You should have received a copy of the GNU Library General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
// USA.
//
#include <stdlib.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <sys/stat.h>
#include "util.h"
#include "JpgcomImageMetaData.H"
#define GIPFEL_FORMAT_1 "gipfel: longitude %lf, latitude %lf, height %lf, direction %lf, nick %lf, tilt %lf, scale %lf, projection type %d"
#define GIPFEL_FORMAT_2 "gipfel: longitude %lf, latitude %lf, height %lf, direction %lf, nick %lf, tilt %lf, focallength_sensor_ratio %lf, projection type %d"
int
JpgcomImageMetaData::load_image(char *name) {
char * args[32];
FILE *p;
pid_t pid;
int status;
char buf[1024];
double lo, la, he, dir, ni, ti, fr;
int pt;
int ret = 1;
args[0] = "rdjpgcom";
args[1] = name;
args[2] = NULL;
p = pexecvp(args[0], args, &pid, "r");
if (p) {
while (fgets(buf, sizeof(buf), p) != NULL) {
if (sscanf(buf, GIPFEL_FORMAT_2,
&lo, &la, &he, &dir, &ni, &ti, &fr, &pt) >= 7) {
longitude = lo;
latitude = la;
height = he;
direction = dir;
nick = ni;
tilt = ti;
focallength_sensor_ratio = fr;
projection_type = pt;
ret = 0;
break;
} else if (sscanf(buf, GIPFEL_FORMAT_1,
&lo, &la, &he, &dir, &ni, &ti, &fr, &pt) >= 7) {
longitude = lo;
latitude = la;
height = he;
direction = dir;
nick = ni;
tilt = ti;
focallength_sensor_ratio = fr;
projection_type = pt;
ret = 2; // special return value for compatibility with
// old format
break;
}
}
fclose(p);
waitpid(pid, &status, 0);
if (WEXITSTATUS(status) == 127 || WEXITSTATUS(status) == 126) {
fprintf(stderr, "%s not found\n", args[0]);
}
}
return ret;
}
int
JpgcomImageMetaData::save_image(char *in_img, char *out_img) {
char * args[32];
FILE *p, *out;
pid_t pid;
char buf[1024];
int status;
size_t n;
struct stat in_stat, out_stat;
if (stat(in_img, &in_stat) != 0) {
perror("stat");
return 1;
}
if (stat(out_img, &out_stat) == 0) {
if (in_stat.st_ino == out_stat.st_ino) {
fprintf(stderr, "Input image %s and output image %s are the same file\n",
in_img, out_img);
return 1;
}
}
out = fopen(out_img, "w");
if (out == NULL) {
perror("fopen");
return 1;
}
snprintf(buf, sizeof(buf), GIPFEL_FORMAT_2,
longitude,
latitude,
height,
direction,
nick,
tilt,
focallength_sensor_ratio,
projection_type);
// try to save gipfel data in JPEG comment section
args[0] = "wrjpgcom";
args[1] = "-replace";
args[2] = "-comment";
args[3] = buf;
args[4] = in_img;
args[5] = NULL;
p = pexecvp(args[0], args, &pid, "r");
if (p) {
while ((n = fread(buf, 1, sizeof(buf), p)) != 0) {
if (fwrite(buf, 1, n, out) != n) {
perror("fwrite");
fclose(out);
fclose(p);
waitpid(pid, &status, 0);
}
}
fclose(p);
waitpid(pid, &status, 0);
if (WEXITSTATUS(status) == 127 || WEXITSTATUS(status) == 126) {
fprintf(stderr, "%s not found\n", args[0]);
}
}
fclose(out);
return 0;
}
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