Add support for squared thumbnails

Disabled by default, only very simple center crop implemented.
The SQUARED_SIMPLE_SHAVE_AMOUNT constant may be slightly adjusted
according to future experience. It's a really dumb algorithm which
may not be suitable for every picture.

Looking for a fast and smart algorithm to determine image weight center
and radius, i.e. focus on object of interest. The OpenCV's face recognition
features are worth to test and consider, though I fear the speed issues.

1 files changed, 7 insertions, 0 deletions

diff --git a/src/setup.h b/src/setup.h
index 8c9927f..16665c4 100644
--- a/src/setup.h
+++ b/src/setup.h
@@ -32,6 +32,11 @@
 #define DEFAULT_INDEX_FILENAME "index.html"
 
 
+typedef enum {
+  THUMBNAIL_SQUARE_TYPE_NONE,
+  THUMBNAIL_SQUARE_TYPE_SIMPLE
+} ThumbnailSquareType;
+
 
 /*  Global gallery setup  */
 typedef struct {
@@ -52,6 +57,7 @@ typedef struct {
   gchar *img_big_dir;
   gchar *img_orig_dir;
   gchar *thumbnail_name_format;
+  ThumbnailSquareType squared_thumbnail_type;
 
   gchar *footer;
   gchar *meta_author;
@@ -65,6 +71,7 @@ typedef struct {
   unsigned long thumbnail_landscape_height;
   unsigned long thumbnail_portrait_width;
   unsigned long thumbnail_portrait_height;
+  unsigned long thumbnail_square_size;
 
   int preview_quality;
   unsigned long preview_landscape_width;