okra pushed a commit to branch master.

http://git.enlightenment.org/apps/ephoto.git/commit/?id=fba9a17b489eb58f12715a024b29b7d170794329

commit fba9a17b489eb58f12715a024b29b7d170794329
Author: Stephen Houston <smhousto...@gmail.com>
Date:   Wed Aug 26 19:12:32 2015 -0500

    Ephoto: Add auto histogram equalization filter.  Clean up some code.
---
 src/bin/ephoto.h                |   1 +
 src/bin/ephoto_bcg.c            | 140 ++++++++++++++++++++--------------------
 src/bin/ephoto_filters.c        | 139 ++++++++++++++++++++++++++++++---------
 src/bin/ephoto_hsv.c            | 128 ++++++++++++++++++------------------
 src/bin/ephoto_single_browser.c |  25 ++++++-
 5 files changed, 269 insertions(+), 164 deletions(-)

diff --git a/src/bin/ephoto.h b/src/bin/ephoto.h
index 03a25b8..81dd7b7 100644
--- a/src/bin/ephoto.h
+++ b/src/bin/ephoto.h
@@ -78,6 +78,7 @@ void         ephoto_filter_blur(Evas_Object *main, 
Evas_Object *image);
 void         ephoto_filter_sharpen(Evas_Object *main, Evas_Object *image);
 void         ephoto_filter_black_and_white(Evas_Object *main, Evas_Object 
*image);
 void         ephoto_filter_old_photo(Evas_Object *main, Evas_Object *image);
+void         ephoto_filter_histogram_eq(Evas_Object *main, Evas_Object *image);
 
 enum _Ephoto_State
 {
diff --git a/src/bin/ephoto_bcg.c b/src/bin/ephoto_bcg.c
index 75a97b0..3fc677f 100644
--- a/src/bin/ephoto_bcg.c
+++ b/src/bin/ephoto_bcg.c
@@ -17,12 +17,41 @@ struct _Ephoto_BCG
    unsigned int *original_im_data;
 };
 
+static int
+_normalize_color(int color)
+{
+   if (color < 0)
+     return 0;
+   else if (color > 255)
+     return 255;
+   else
+     return color;
+}
+
+static int
+_mul_color_alpha(int color, int alpha)
+{
+   if (alpha > 0 && alpha < 255)
+     return (color * (255 / alpha));
+   else
+     return color;
+}
+
+static int
+_demul_color_alpha(int color, int alpha)
+{
+   if (alpha > 0 && alpha < 255)
+     return ((color * alpha) / 255);
+   else
+     return color;
+}
+
 unsigned int *
 _ephoto_bcg_adjust_brightness(Ephoto_BCG *ebcg, int brightness, unsigned int 
*image_data)
 {
    unsigned int *im_data, *im_data_new, *p1, *p2;
    int x, y, w, h;
-   int a, r, g, b, nb, ng, nr;
+   int a, r, g, b, bb, gg, rr;
 
    im_data = malloc(sizeof(unsigned int) * ebcg->w * ebcg->h);
    if (image_data)
@@ -43,28 +72,19 @@ _ephoto_bcg_adjust_brightness(Ephoto_BCG *ebcg, int 
brightness, unsigned int *im
              g = (int)((*p1 >> 8) & 0xff);
              r = (int)((*p1 >> 16) & 0xff);
              a = (int)((*p1 >> 24) & 0xff);
-             if (a > 0 && a < 255)
-               {
-                  b = b * (255 / a);
-                  g = g * (255 / a);
-                  r = r * (255 / a);
-               }
-             nb = (int)b+ebcg->brightness;
-             ng = (int)g+ebcg->brightness;
-             nr = (int)r+ebcg->brightness;
-             if (nb < 0) nb = 0;
-             if (nb > 255) nb = 255;
-             if (ng < 0) ng = 0;
-             if (ng > 255) ng = 255;
-             if (nr < 0) nr = 0;
-             if (nr > 255) nr = 255;
-             if (a > 0 && a < 255)
-               {
-                  nb = (nb * a) / 255;
-                  ng = (ng * a) / 255;
-                  nr = (nr * a) / 255;
-               }
-             *p2 = (a << 24) | (nr << 16) | (ng << 8) | nb;
+             b = _mul_color_alpha(b, a);
+             g = _mul_color_alpha(g, a);
+             r = _mul_color_alpha(r, a);
+             bb = (int)b+ebcg->brightness;
+             gg = (int)g+ebcg->brightness;
+             rr = (int)r+ebcg->brightness;
+             bb = _normalize_color(bb);
+             gg = _normalize_color(gg);
+             rr = _normalize_color(rr);
+             bb = _demul_color_alpha(bb, a);
+             gg = _demul_color_alpha(gg, a);
+             rr = _demul_color_alpha(rr, a);
+             *p2 = (a << 24) | (rr << 16) | (gg << 8) | bb;
              p2++;
              p1++;
           }
@@ -79,7 +99,7 @@ _ephoto_bcg_adjust_contrast(Ephoto_BCG *ebcg, int contrast, 
unsigned int *image_
 {
    unsigned int *im_data, *im_data_new, *p1, *p2;
    int x, y, w, h, top, bottom;
-   int a, r, g, b, nb, ng, nr;
+   int a, r, g, b, bb, gg, rr;
    float factor;
 
    im_data = malloc(sizeof(unsigned int) * ebcg->w * ebcg->h);
@@ -104,28 +124,19 @@ _ephoto_bcg_adjust_contrast(Ephoto_BCG *ebcg, int 
contrast, unsigned int *image_
              g = (int)((*p1 >> 8) & 0xff);
              r = (int)((*p1 >> 16) & 0xff);
              a = (int)((*p1 >> 24) & 0xff);
-             if (a > 0 && a < 255)
-               {
-                  b = b * (255 / a);
-                  g = g * (255 / a);
-                  r = r * (255 / a);
-               }
-             nb = (int)((factor * (b - 128)) + 128);
-             ng = (int)((factor * (g - 128)) + 128);
-             nr = (int)((factor * (r - 128)) + 128);
-             if (nb < 0) nb = 0;
-             if (nb > 255) nb = 255;
-             if (ng < 0) ng = 0;
-             if (ng > 255) ng = 255;
-             if (nr < 0) nr = 0;
-             if (nr > 255) nr = 255;
-             if (a > 0 && a < 255)
-               {
-                  nb = (nb * a) / 255;
-                  ng = (ng * a) / 255;
-                  nr = (nr * a) / 255;
-               }
-             *p2 = (a << 24) | (nr << 16) | (ng << 8) | nb;
+             b = _mul_color_alpha(b, a);
+             g = _mul_color_alpha(g, a);
+             r = _mul_color_alpha(r, a);
+             bb = (int)((factor * (b - 128)) + 128);
+             gg = (int)((factor * (g - 128)) + 128);
+             rr = (int)((factor * (r - 128)) + 128);
+             bb = _normalize_color(bb);
+             gg = _normalize_color(gg);
+             rr = _normalize_color(rr);
+             bb = _demul_color_alpha(bb, a);
+             gg = _demul_color_alpha(gg, a);
+             rr = _demul_color_alpha(rr, a);
+             *p2 = (a << 24) | (rr << 16) | (gg << 8) | bb;
              p2++;
              p1++;
           }
@@ -140,7 +151,7 @@ _ephoto_bcg_adjust_gamma(Ephoto_BCG *ebcg, double gamma, 
unsigned int *image_dat
 {
    unsigned int *im_data, *im_data_new, *p1, *p2;
    int x, y, w, h;
-   int a, r, g, b, nb, ng, nr;
+   int a, r, g, b, bb, gg, rr;
 
    im_data = malloc(sizeof(unsigned int) * ebcg->w * ebcg->h);
    if (image_data)
@@ -161,28 +172,19 @@ _ephoto_bcg_adjust_gamma(Ephoto_BCG *ebcg, double gamma, 
unsigned int *image_dat
              g = (int)((*p1 >> 8) & 0xff);
              r = (int)((*p1 >> 16) & 0xff);
              a = (int)((*p1 >> 24) & 0xff);
-             if (a > 0 && a < 255)
-               {
-                  b = b * (255 / a);
-                  g = g * (255 / a);
-                  r = r * (255 / a);
-               }
-             nb = (int)(pow(((double)b/255), ebcg->gamma) * 255);
-             ng = (int)(pow(((double)g/255), ebcg->gamma) * 255);
-             nr = (int)(pow(((double)r/255), ebcg->gamma) * 255);
-             if (nb < 0) nb = 0;
-             if (nb > 255) nb = 255;
-             if (ng < 0) ng = 0;
-             if (ng > 255) ng = 255;
-             if (nr < 0) nr = 0;
-             if (nr > 255) nr = 255;
-             if (a > 0 && a < 255)
-               {
-                  nb = (nb * a) / 255;
-                  ng = (ng * a) / 255;
-                  nr = (nr * a) / 255;
-               }
-             *p2 = (a << 24) | (nr << 16) | (ng << 8) | nb;
+             b = _mul_color_alpha(b, a);
+             g = _mul_color_alpha(g, a);
+             r = _mul_color_alpha(r, a);
+             bb = (int)(pow(((double)b/255), ebcg->gamma) * 255);
+             gg = (int)(pow(((double)g/255), ebcg->gamma) * 255);
+             rr = (int)(pow(((double)r/255), ebcg->gamma) * 255);
+             bb = _normalize_color(bb);
+             gg = _normalize_color(gg);
+             rr = _normalize_color(rr);
+             bb = _demul_color_alpha(bb, a);
+             gg = _demul_color_alpha(gg, a);
+             rr = _demul_color_alpha(rr, a);
+             *p2 = (a << 24) | (rr << 16) | (gg << 8) | bb;
              p2++;
              p1++;
           }
diff --git a/src/bin/ephoto_filters.c b/src/bin/ephoto_filters.c
index 8c0704c..0e19bf4 100644
--- a/src/bin/ephoto_filters.c
+++ b/src/bin/ephoto_filters.c
@@ -1,5 +1,34 @@
 #include "ephoto.h"
 
+static int
+_normalize_color(int color)
+{
+   if (color < 0)
+     return 0;
+   else if (color > 255)
+     return 255;
+   else
+     return color;
+}
+
+static int
+_mul_color_alpha(int color, int alpha)
+{
+   if (alpha > 0 && alpha < 255)
+     return (color * (255 / alpha));
+   else
+     return color;
+}
+
+static int
+_demul_color_alpha(int color, int alpha)
+{
+   if (alpha > 0 && alpha < 255)
+     return ((color * alpha) / 255);
+   else
+     return color;
+}   
+
 void
 ephoto_filter_blur(Evas_Object *main, Evas_Object *image)
 {
@@ -168,12 +197,9 @@ ephoto_filter_black_and_white(Evas_Object *main, 
Evas_Object *image)
         g = (int)((im_data[i] >> 8) & 0xff);
         r = (int)((im_data[i] >> 16) & 0xff);
         a = (int)((im_data[i] >> 24) & 0xff);
-        if (a > 0 && a < 255) 
-          {
-             b = b * (255 / a);
-             g = g * (255 / a);
-             r = r * (255 / a);
-          }
+        b = _mul_color_alpha(b, a);
+        g = _mul_color_alpha(g, a);
+        r = _mul_color_alpha(r, a);
         gray = (int)((0.3 * r) + (0.59 * g) + (0.11 * b));
         if (a >= 0 && a < 255) 
           gray = (gray * a) / 255;
@@ -197,34 +223,89 @@ ephoto_filter_old_photo(Evas_Object *main, Evas_Object 
*image)
         g = (int)((im_data[i] >> 8) & 0xff);
         r = (int)((im_data[i] >> 16) & 0xff);
         a = (int)((im_data[i] >> 24) & 0xff);
-        if (a > 0 && a < 255)
-          {
-             b = b * (255 / a);
-             g = g * (255 / a);
-             r = r * (255 / a);
-          }
+        b = _mul_color_alpha(b, a);
+        g = _mul_color_alpha(g, a);
+        r = _mul_color_alpha(r, a);
         rr = (int)((r* .393) + (g*.769) + (b*.189));
-        if (rr < 0)
-          rr = 0;
-        if (rr > 255)
-          rr = 255;
+        rr = _normalize_color(rr);
         gg = (int)((r* .349) + (g*.686) + (b*.168));
-        if (gg < 0)
-          gg = 0;
-        if (gg > 255)
-          gg = 255;
+        gg = _normalize_color(gg);
         bb = (int)((r* .272) + (g*.534) + (b*.131));              
-        if (bb < 0)
-          bb = 0;
-        if (bb > 255)
-          bb = 255;
-        if (a >= 0 && a < 255)
+        bb = _normalize_color(bb);
+        bb = _demul_color_alpha(bb, a);
+        gg = _demul_color_alpha(gg, a);
+        rr = _demul_color_alpha(rr, a);
+        im_data_new[i] = (a << 24) | (rr << 16) | (gg << 8) | bb;
+     }
+   ephoto_single_browser_image_data_update(main, image, EINA_TRUE, 
im_data_new, w, h);
+}
+
+void
+ephoto_filter_histogram_eq(Evas_Object *main, Evas_Object *image)
+{
+   unsigned int *im_data, *im_data_new, *p1, *p2;
+   int x, y, w, h, i, hist[256], cdf[256];
+   int a, r, g, b, bb, gg, rr, norm, total;
+   float hh, s, v, nv, sum;
+
+   im_data = evas_object_image_data_get(elm_image_object_get(image), 
EINA_FALSE);
+   evas_object_image_size_get(elm_image_object_get(image), &w, &h);
+   im_data_new = malloc(sizeof(unsigned int) * w * h);
+   total = w * h;
+   for (i = 0; i < 256; i++)
+     hist[i] = 0;
+   for (y = 0; y < h; y++)
+     {
+        p1 = im_data + (y * w);
+        for (x = 0; x < w; x++)
           {
-             rr = (rr * a) / 255;
-             gg = (gg * a) / 255;
-             bb = (bb * a) / 255;
+             b = (int)((*p1) & 0xff);
+             g = (int)((*p1 >> 8) & 0xff);
+             r = (int)((*p1 >> 16) & 0xff);
+             a = (int)((*p1 >> 24) & 0xff);
+             b = _mul_color_alpha(b, a);
+             g = _mul_color_alpha(g, a);
+             r = _mul_color_alpha(r, a);
+             evas_color_rgb_to_hsv(r, g, b, &hh, &s, &v);
+             norm = (int)round((double)v * (double)255);
+             hist[norm] += 1;
+             p1++;
+          }
+     }
+   sum = 0;
+   for (i = 0; i < 256; i++)
+     {
+        sum += ((double)hist[i] / (double)total);
+        cdf[i] = (int)round(sum * 255);
+     }
+   for (y = 0; y < h; y++)
+     {
+        p1 = im_data + (y * w);
+        p2 = im_data_new + (y * w);
+        for (x = 0; x < w; x++)
+          {
+             b = (int)((*p1) & 0xff);
+             g = (int)((*p1 >> 8) & 0xff);
+             r = (int)((*p1 >> 16) & 0xff);
+             a = (int)((*p1 >> 24) & 0xff);
+             b = _mul_color_alpha(b, a);
+             g = _mul_color_alpha(g, a);
+             r = _mul_color_alpha(r, a);
+             evas_color_rgb_to_hsv(r, g, b, &hh, &s, &v);
+             norm = (int)round((double)v * (double)255);
+             nv = (float)cdf[norm] / (float)255;
+             evas_color_hsv_to_rgb(hh, s, nv, &rr, &gg, &bb);
+             bb = _normalize_color(bb);
+             gg = _normalize_color(gg);
+             rr = _normalize_color(rr);
+             bb = _demul_color_alpha(bb, a);
+             gg = _demul_color_alpha(gg, a);
+             rr = _demul_color_alpha(rr, a);
+             *p2 = (a << 24) | (rr << 16) | (gg << 8) | bb;
+             p2++;
+             p1++;
           }
-        im_data_new[i] = (a << 24) | (rr << 16) | (gg << 8) | bb;
      }
    ephoto_single_browser_image_data_update(main, image, EINA_TRUE, 
im_data_new, w, h);
 }
+
diff --git a/src/bin/ephoto_hsv.c b/src/bin/ephoto_hsv.c
index b019e10..17e01ee 100644
--- a/src/bin/ephoto_hsv.c
+++ b/src/bin/ephoto_hsv.c
@@ -17,12 +17,41 @@ struct _Ephoto_HSV
    unsigned int *original_im_data;
 };
 
+static int
+_normalize_color(int color)
+{
+   if (color < 0)
+     return 0;
+   else if (color > 255)
+     return 255;
+   else
+     return color;
+}
+
+static int
+_mul_color_alpha(int color, int alpha)
+{
+   if (alpha > 0 && alpha < 255)
+     return (color * (255 / alpha));
+   else
+     return color;
+}
+
+static int
+_demul_color_alpha(int color, int alpha)
+{
+   if (alpha > 0 && alpha < 255)
+     return ((color * alpha) / 255);
+   else
+     return color;
+}
+
 unsigned int *
 _ephoto_hsv_adjust_hue(Ephoto_HSV *ehsv, double hue, unsigned int *image_data)
 {
    unsigned int *im_data, *im_data_new, *p1, *p2;
    int x, y, w, h;
-   int a, r, g, b, nb, ng, nr;
+   int a, r, g, b, bb, gg, rr;
    float hh, s, v;
 
    im_data = malloc(sizeof(unsigned int) * ehsv->w * ehsv->h);
@@ -43,32 +72,23 @@ _ephoto_hsv_adjust_hue(Ephoto_HSV *ehsv, double hue, 
unsigned int *image_data)
              g = (int)((*p1 >> 8) & 0xff);
              r = (int)((*p1 >> 16) & 0xff);
              a = (int)((*p1 >> 24) & 0xff);
-             if (a > 0 && a < 255)
-               {
-                  b = b * (255 / a);
-                  g = g * (255 / a);
-                  r = r * (255 / a);
-               }
+             b = _mul_color_alpha(b, a);
+             g = _mul_color_alpha(g, a);
+             r = _mul_color_alpha(r, a);               
              evas_color_rgb_to_hsv(r, g, b, &hh, &s, &v);
              hh += hue;
              if (hh < 0)
                hh += 360;
              if (hh > 360)
                hh -= 360;
-             evas_color_hsv_to_rgb(hh, s, v, &nr, &ng, &nb);
-             if (nb < 0) nb = 0;
-             if (nb > 255) nb = 255;
-             if (ng < 0) ng = 0;
-             if (ng > 255) ng = 255;
-             if (nr < 0) nr = 0;
-             if (nr > 255) nr = 255;
-             if (a > 0 && a < 255)
-               {
-                  nb = (nb * a) / 255;
-                  ng = (ng * a) / 255;
-                  nr = (nr * a) / 255;
-               }
-             *p2 = (a << 24) | (nr << 16) | (ng << 8) | nb;
+             evas_color_hsv_to_rgb(hh, s, v, &rr, &gg, &bb);
+             bb = _normalize_color(bb);
+             gg = _normalize_color(gg);
+             rr = _normalize_color(rr);
+             bb = _demul_color_alpha(bb, a);
+             gg = _demul_color_alpha(gg, a);
+             rr = _demul_color_alpha(rr, a);
+             *p2 = (a << 24) | (rr << 16) | (gg << 8) | bb;
              p2++;
              p1++;
           }
@@ -84,7 +104,7 @@ _ephoto_hsv_adjust_saturation(Ephoto_HSV *ehsv, double 
saturation, unsigned int
 {
    unsigned int *im_data, *im_data_new, *p1, *p2;
    int x, y, w, h;
-   int a, r, g, b, nb, ng, nr;
+   int a, r, g, b, bb, gg, rr;
    float hh, s, v;
    
    im_data = malloc(sizeof(unsigned int) * ehsv->w * ehsv->h);
@@ -105,32 +125,23 @@ _ephoto_hsv_adjust_saturation(Ephoto_HSV *ehsv, double 
saturation, unsigned int
              g = (int)((*p1 >> 8) & 0xff);
              r = (int)((*p1 >> 16) & 0xff);
              a = (int)((*p1 >> 24) & 0xff);
-             if (a > 0 && a < 255)
-               {
-                  b = b * (255 / a);
-                  g = g * (255 / a);
-                  r = r * (255 / a);
-               }
+             b = _mul_color_alpha(b, a);
+             g = _mul_color_alpha(g, a);
+             r = _mul_color_alpha(r, a);
              evas_color_rgb_to_hsv(r, g, b, &hh, &s, &v);
              s += s*((float)saturation / 100);
              if (s < 0)
                s = 0;
              if (s > 1)
                s = 1;
-             evas_color_hsv_to_rgb(hh, s, v, &nr, &ng, &nb);
-             if (nb < 0) nb = 0;
-             if (nb > 255) nb = 255;
-             if (ng < 0) ng = 0;
-             if (ng > 255) ng = 255;
-             if (nr < 0) nr = 0;
-             if (nr > 255) nr = 255;
-             if (a > 0 && a < 255)
-               {
-                  nb = (nb * a) / 255;
-                  ng = (ng * a) / 255;
-                  nr = (nr * a) / 255;
-               }
-             *p2 = (a << 24) | (nr << 16) | (ng << 8) | nb;
+             evas_color_hsv_to_rgb(hh, s, v, &rr, &gg, &bb);
+             bb = _normalize_color(bb);
+             gg = _normalize_color(gg);
+             rr = _normalize_color(rr);
+             bb = _demul_color_alpha(bb, a);
+             gg = _demul_color_alpha(gg, a);
+             rr = _demul_color_alpha(rr, a);
+             *p2 = (a << 24) | (rr << 16) | (gg << 8) | bb;
              p2++;
              p1++;
           }
@@ -146,7 +157,7 @@ _ephoto_hsv_adjust_value(Ephoto_HSV *ehsv, double value, 
unsigned int *image_dat
 {
    unsigned int *im_data, *im_data_new, *p1, *p2;
    int x, y, w, h;
-   int a, r, g, b, nb, ng, nr;
+   int a, r, g, b, bb, gg, rr;
    float hh, s, v;
 
    im_data = malloc(sizeof(unsigned int) * ehsv->w * ehsv->h);
@@ -167,32 +178,23 @@ _ephoto_hsv_adjust_value(Ephoto_HSV *ehsv, double value, 
unsigned int *image_dat
              g = (int)((*p1 >> 8) & 0xff);
              r = (int)((*p1 >> 16) & 0xff);
              a = (int)((*p1 >> 24) & 0xff);
-             if (a > 0 && a < 255)
-               {
-                  b = b * (255 / a);
-                  g = g * (255 / a);
-                  r = r * (255 / a);
-               }
+             b = _mul_color_alpha(b, a);
+             g = _mul_color_alpha(g, a);
+             r = _mul_color_alpha(r, a);
              evas_color_rgb_to_hsv(r, g, b, &hh, &s, &v);
              v += (v*((float)value/100));
              if (v < 0)
                v = 0;
              if (v > 1)
                v = 1;
-             evas_color_hsv_to_rgb(hh, s, v, &nr, &ng, &nb);
-             if (nb < 0) nb = 0;
-             if (nb > 255) nb = 255;
-             if (ng < 0) ng = 0;
-             if (ng > 255) ng = 255;
-             if (nr < 0) nr = 0;
-             if (nr > 255) nr = 255;
-             if (a > 0 && a < 255)
-               {
-                  nb = (nb * a) / 255;
-                  ng = (ng * a) / 255;
-                  nr = (nr * a) / 255;
-               }
-             *p2 = (a << 24) | (nr << 16) | (ng << 8) | nb;
+             evas_color_hsv_to_rgb(hh, s, v, &rr, &gg, &bb);
+             bb = _normalize_color(bb);
+             gg = _normalize_color(gg);
+             rr = _normalize_color(rr);
+             bb = _demul_color_alpha(bb, a);
+             gg = _demul_color_alpha(gg, a);
+             rr = _demul_color_alpha(rr, a);
+             *p2 = (a << 24) | (rr << 16) | (gg << 8) | bb;
              p2++;
              p1++;
           }
diff --git a/src/bin/ephoto_single_browser.c b/src/bin/ephoto_single_browser.c
index 82cecf2..f2e5910 100644
--- a/src/bin/ephoto_single_browser.c
+++ b/src/bin/ephoto_single_browser.c
@@ -1210,6 +1210,20 @@ _go_hsv(void *data, Evas_Object *obj EINA_UNUSED, void 
*event_info EINA_UNUSED)
 }
 
 static void
+_go_auto_eq(void *data, Evas_Object *obj EINA_UNUSED, void *event_info 
EINA_UNUSED)
+{
+   Ephoto_Single_Browser *sb = data;
+   if (sb->viewer)
+     {
+        sb->editing = EINA_TRUE;
+        elm_object_disabled_set(sb->bar, EINA_TRUE);
+        evas_object_freeze_events_set(sb->bar, EINA_TRUE);
+        Ephoto_Viewer *v = evas_object_data_get(sb->viewer, "viewer");
+        ephoto_filter_histogram_eq(sb->main, v->image);
+     }
+}
+
+static void
 _go_blur(void *data, Evas_Object *obj EINA_UNUSED, void *event_info 
EINA_UNUSED)
 {
    Ephoto_Single_Browser *sb = data;
@@ -1464,6 +1478,7 @@ ephoto_single_browser_add(Ephoto *ephoto, Evas_Object 
*parent)
    elm_menu_item_add(menu, menu_it, "insert-image", 
_("Brightness/Contrast/Gamma"), _go_bcg, sb);
    elm_menu_item_add(menu, menu_it, "insert-image", _("Hue/Saturation/Value"), 
_go_hsv, sb);
    menu_it = elm_menu_item_add(menu, NULL, "document-properties", 
_("Filters"), NULL, NULL);
+   elm_menu_item_add(menu, menu_it, "insert-image", _("Auto Equalize"), 
_go_auto_eq, sb);
    elm_menu_item_add(menu, menu_it, "insert-image", _("Black and White"), 
_go_black_and_white, sb);
    elm_menu_item_add(menu, menu_it, "insert-image", _("Old Photo"), 
_go_old_photo, sb);
    /*FIXME: Use separators once they don't mess up homogeneous toolbar*/
@@ -1536,9 +1551,13 @@ ephoto_single_browser_entry_set(Evas_Object *obj, 
Ephoto_Entry *entry)
      ephoto_entry_free_listener_add(entry, _entry_free, sb);
 
    _ephoto_single_browser_recalc(sb);
-   sb->edited_image_data = NULL;
-   sb->ew = 0;
-   sb->eh = 0;
+   if (sb->edited_image_data)
+     {
+        free(sb->edited_image_data);
+        sb->edited_image_data = NULL;
+        sb->ew = 0;
+        sb->eh = 0;
+     }
    if (sb->viewer)
      _zoom_fit(sb);
 }

-- 


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