Author: akv
Date: 2012-04-23 22:39:34 +0200 (Mon, 23 Apr 2012)
New Revision: 4196
Modified:
branches/4175-enfuse/src/rs-enfuse.c
Log:
Added function to calculate lightness of a image - to find the brightest and
darkest if we need to extend the Enfuse with more exposures.
Modified: branches/4175-enfuse/src/rs-enfuse.c
===================================================================
--- branches/4175-enfuse/src/rs-enfuse.c 2012-04-22 20:41:39 UTC (rev
4195)
+++ branches/4175-enfuse/src/rs-enfuse.c 2012-04-23 20:39:34 UTC (rev
4196)
@@ -34,6 +34,32 @@
gboolean has_align_image_stack ();
+gint calculate_lightness(RSFilter *filter)
+{
+ RSFilterRequest *request = rs_filter_request_new();
+ rs_filter_request_set_quick(RS_FILTER_REQUEST(request), TRUE);
+ rs_filter_param_set_object(RS_FILTER_PARAM(request), "colorspace",
rs_color_space_new_singleton("RSSrgb"));
+ RSFilterResponse *response = rs_filter_get_image8(filter, request);
+ g_object_unref(request);
+
+ GdkPixbuf *pixbuf = rs_filter_response_get_image8(response);
+
+ guchar *pixels = gdk_pixbuf_get_pixels(pixbuf);
+ gint rowstride = gdk_pixbuf_get_rowstride(pixbuf);
+ gint height = gdk_pixbuf_get_height(pixbuf);
+
+ gint i;
+ gulong sum = 0;
+ gint num = 0;
+
+ for (i = 0; i<rowstride*height; i++)
+ {
+ sum += pixels[i];
+ num++;
+ }
+ return (gint) (sum/num);
+}
+
gint export_image(gchar *filename, RSOutput *output, RSFilter *filter, gint
snapshot, double exposure, gchar *outputname) {
RS_PHOTO *photo = rs_photo_load_from_file(filename);
@@ -59,8 +85,14 @@
rs_output_set_from_conf(output, "batch");
rs_output_execute(output, filter);
+
+ gint value = calculate_lightness(filter);
+ printf("%s: %d\n", filename, value);
g_list_free(filters);
+ return value;
}
+ else
+ return -1;
}
GList * export_images(GList *files, gchar *first, gchar *last)
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