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Added EXIF auto-orientation

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This commit is contained in:
Bert 2011-09-06 11:09:57 +02:00
parent b96c106337
commit bfab4dc328
2 changed files with 56 additions and 1 deletions
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48
image.c
View File

@ -16,11 +16,12 @@
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include <string.h>
#include <unistd.h>
#include <libexif/exif-data.h>
#ifdef GIF_SUPPORT
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <gif_lib.h>
#endif
@ -37,6 +38,49 @@ enum { MIN_GIF_DELAY = 50 };
float zoom_min;
float zoom_max;
void exif_auto_orientate(const fileinfo_t *file) {
ExifData *ed;
ExifEntry *entry;
int byte_order, orientation;
if (!(ed = exif_data_new_from_file(file->path)))
return;
entry = exif_content_get_entry(ed->ifd[EXIF_IFD_0], EXIF_TAG_ORIENTATION);
if (entry) {
byte_order = exif_data_get_byte_order(ed);
orientation = exif_get_short(entry->data, byte_order);
}
exif_data_unref(ed);
if (!entry)
return;
switch (orientation) {
case 5:
imlib_image_orientate(1);
case 2:
imlib_image_flip_vertical();
break;
case 3:
imlib_image_orientate(2);
break;
case 7:
imlib_image_orientate(1);
case 4:
imlib_image_flip_horizontal();
break;
case 6:
imlib_image_orientate(1);
break;
case 8:
imlib_image_orientate(270);
break;
}
}
void img_init(img_t *img, win_t *win) {
zoom_min = zoom_levels[0] / 100.0;
zoom_max = zoom_levels[ARRLEN(zoom_levels) - 1] / 100.0;
@ -241,6 +285,8 @@ int img_load(img_t *img, const fileinfo_t *file) {
imlib_context_set_anti_alias(img->aa);
fmt = imlib_image_format();
if (!strcmp(fmt, "jpeg"))
exif_auto_orientate(file);
#ifdef GIF_SUPPORT
if (!strcmp(fmt, "gif"))
img_load_gif(img, file);

9
thumbs.c
View File

@ -34,6 +34,8 @@
#define st_atim st_atimespec
#endif
void exif_auto_orientate(const fileinfo_t*);
const int thumb_dim = THUMB_SIZE + 10;
char *cache_dir = NULL;
@ -221,6 +223,7 @@ int tns_load(tns_t *tns, int n, const fileinfo_t *file,
float z, zw, zh;
thumb_t *t;
Imlib_Image *im;
const char *fmt;
if (!tns || !tns->thumbs || !file || !file->name || !file->path)
return 0;
@ -252,6 +255,12 @@ int tns_load(tns_t *tns, int n, const fileinfo_t *file,
imlib_context_set_image(im);
imlib_context_set_anti_alias(1);
if (!cache_hit) {
fmt = imlib_image_format();
if (!strcmp(fmt, "jpeg"))
exif_auto_orientate(file);
}
w = imlib_image_get_width();
h = imlib_image_get_height();
zw = (float) THUMB_SIZE / (float) w;