From 05b77eed721931281759bf222e319b05d81458c9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?llu=C3=ADs=20g=C3=B3mez=20i=20bigord=C3=A0?=
 <lluisbigorda@users.sourceforge.net>
Date: Thu, 24 Sep 2009 22:08:54 +0000
Subject: The colorspace in Gem-MACOSX is GRAB instead of RGBA in Linux

so added -DDARWIN -DLINUX definitions in the Makefile

and custom code for each system on pix_opencv_contours_convexhull and pix_opencv_colorfilt


svn path=/trunk/externals/pix_opencv/; revision=12446
---
 Makefile                          |  2 ++
 pix_opencv_colorfilt.cc           | 38 ++++++++++++++++++++++++++++++++------
 pix_opencv_contours_convexhull.cc | 10 ++++++++++
 3 files changed, 44 insertions(+), 6 deletions(-)

diff --git a/Makefile b/Makefile
index 3f89146..c0ee4bb 100644
--- a/Makefile
+++ b/Makefile
@@ -13,12 +13,14 @@ CPPFLAGS  = -fPIC -DPD -O2 -funroll-loops -fomit-frame-pointer  -ffast-math \
 
 UNAME := $(shell uname -s)
 ifeq ($(UNAME),Linux)
+ CPPFLAGS += -DLINUX
  INCLUDES += `pkg-config --cflags opencv`
  LDFLAGS =  -export_dynamic -shared
  LIBS = `pkg-config --libs opencv`
  EXTENSION = pd_linux
 endif
 ifeq ($(UNAME),Darwin)
+ CPPFLAGS += -DDARWIN
  INCLUDES += -I/System/Library/Frameworks/OpenCV.framework/Headers/
  LDFLAGS =  -bundle -undefined dynamic_lookup
  LIBS =  -lm -framework OpenCV
diff --git a/pix_opencv_colorfilt.cc b/pix_opencv_colorfilt.cc
index 483f0b1..7e038b8 100644
--- a/pix_opencv_colorfilt.cc
+++ b/pix_opencv_colorfilt.cc
@@ -55,7 +55,11 @@ pix_opencv_colorfilt :: pix_opencv_colorfilt()
 
   rgba = cvCreateImage(cvSize(comp_xsize,comp_ysize), IPL_DEPTH_8U, 4);
   rgb = cvCreateImage(cvSize(comp_xsize,comp_ysize), IPL_DEPTH_8U, 3);
+#ifdef DARWIN
+  brgb = cvCreateImage(cvSize(comp_xsize,comp_ysize), IPL_DEPTH_8U, 4);
+#else
   brgb = cvCreateImage(cvSize(comp_xsize,comp_ysize), IPL_DEPTH_8U, 3);
+#endif
 }
 
 /////////////////////////////////////////////////////////
@@ -111,27 +115,39 @@ void pix_opencv_colorfilt :: processRGBAImage(imageStruct &image)
 	//create the orig image with new size
         rgba = cvCreateImage(cvSize(image.xsize,image.ysize), IPL_DEPTH_8U, 4);
         rgb = cvCreateImage(cvSize(image.xsize,image.ysize), IPL_DEPTH_8U, 3);
+#ifdef DARWIN
+    	brgb = cvCreateImage(cvSize(image.xsize,image.ysize), IPL_DEPTH_8U, 4);
+#else
     	brgb = cvCreateImage(cvSize(image.xsize,image.ysize), IPL_DEPTH_8U, 3);
+#endif
     }
     memcpy( rgba->imageData, image.data, image.xsize*image.ysize*4 );
-    cvCvtColor(rgba, brgb, CV_BGRA2BGR);
+    cvCopy(rgba, brgb);
 
     for( py=0; py<rgba->height; py++ ) {
       for( px=0; px<rgba->width; px++ ) {
-        b = ((uchar*)(rgba->imageData + rgba->widthStep*(int)py))[(int)px*4];
+#ifdef DARWIN
+        g = ((uchar*)(rgba->imageData + rgba->widthStep*(int)py))[(int)px*4];
+        r = ((uchar*)(rgba->imageData + rgba->widthStep*(int)py))[(int)px*4+1];
+        b = ((uchar*)(rgba->imageData + rgba->widthStep*(int)py))[(int)px*4+3];
+#else 
+        r = ((uchar*)(rgba->imageData + rgba->widthStep*(int)py))[(int)px*4];
         g = ((uchar*)(rgba->imageData + rgba->widthStep*(int)py))[(int)px*4+1];
-        r = ((uchar*)(rgba->imageData + rgba->widthStep*(int)py))[(int)px*4+2];
+        b = ((uchar*)(rgba->imageData + rgba->widthStep*(int)py))[(int)px*4+2];
+#endif
 
         diff = 0;
         diff = abs(r-x_colorR );
         diff += abs(g-x_colorG );
         diff += abs(b-x_colorB );
+        diff = diff/3;
 
         if ( diff > x_tolerance )
         {
            (rgba->imageData + rgba->widthStep*(int)py)[(int)px*4] = 0x0;
            (rgba->imageData + rgba->widthStep*(int)py)[(int)px*4+1] = 0x0;
            (rgba->imageData + rgba->widthStep*(int)py)[(int)px*4+2] = 0x0;
+           (rgba->imageData + rgba->widthStep*(int)py)[(int)px*4+3] = 0x0;
         }
       }
     }
@@ -162,7 +178,11 @@ void pix_opencv_colorfilt :: processRGBImage(imageStruct &image)
 	//create the orig image with new size
         rgba = cvCreateImage(cvSize(image.xsize,image.ysize), IPL_DEPTH_8U, 4);
         rgb = cvCreateImage(cvSize(image.xsize,image.ysize), IPL_DEPTH_8U, 3);
+#ifdef DARWIN
+    	brgb = cvCreateImage(cvSize(rgb->width,rgb->height), IPL_DEPTH_8U, 4);
+#else
     	brgb = cvCreateImage(cvSize(rgb->width,rgb->height), IPL_DEPTH_8U, 3);
+#endif
     
     }
     memcpy( rgb->imageData, image.data, image.xsize*image.ysize*3 );
@@ -229,10 +249,16 @@ void pix_opencv_colorfilt :: pickMess (float xcur, float ycur)
    if ( ( xcur >= 0. ) && ( xcur <= comp_xsize )
         && ( ycur > 0. ) && ( ycur < comp_ysize ) )
    {
-      x_colorB = ((uchar*)(brgb->imageData + brgb->widthStep*(int)ycur))[(int)xcur*3];
+#ifdef DARWIN
+      x_colorR = ((uchar*)(brgb->imageData + brgb->widthStep*(int)ycur))[(int)xcur*4+1];
+      x_colorG = ((uchar*)(brgb->imageData + brgb->widthStep*(int)ycur))[(int)xcur*4+2];
+      x_colorB = ((uchar*)(brgb->imageData + brgb->widthStep*(int)ycur))[(int)xcur*4+3];
+#else
+      ycur = brgb->height - ycur;
+      x_colorR = ((uchar*)(brgb->imageData + brgb->widthStep*(int)ycur))[(int)xcur*3];
       x_colorG = ((uchar*)(brgb->imageData + brgb->widthStep*(int)ycur))[(int)xcur*3+1];
-      x_colorR = ((uchar*)(brgb->imageData + brgb->widthStep*(int)ycur))[(int)xcur*3+2];
-
+      x_colorB = ((uchar*)(brgb->imageData + brgb->widthStep*(int)ycur))[(int)xcur*3+2];
+#endif
       outlet_float( x_R, x_colorR );
       outlet_float( x_G, x_colorG );
       outlet_float( x_B, x_colorB );
diff --git a/pix_opencv_contours_convexhull.cc b/pix_opencv_contours_convexhull.cc
index ebd60a3..ae70e20 100644
--- a/pix_opencv_contours_convexhull.cc
+++ b/pix_opencv_contours_convexhull.cc
@@ -182,14 +182,24 @@ void pix_opencv_contours_convexhull :: processRGBAImage(imageStruct &image)
         // Draw convex hull for current contour.        
         for(i=0; i<hullsize-1; i++)
         {
+#ifdef DARWIN
+            cvLine(rgb, PointArray[hull[i]], 
+                            PointArray[hull[i+1]],CV_RGB(0,255,0),1, CV_AA, 0 );
+#else
             cvLine(rgb, PointArray[hull[i]], 
                             PointArray[hull[i+1]],CV_RGB(0,0,255),1, CV_AA, 0 );
+#endif
 	    SETFLOAT(&rlist[j], PointArray[hull[i]].x);
             SETFLOAT(&rlist[j+1], PointArray[hull[i]].y);
 	    j = j + 2;
         }
+#ifdef DARWIN
+        cvLine(rgb, PointArray[hull[hullsize-1]],
+                             PointArray[hull[0]],CV_RGB(0,255,0),1, CV_AA, 0 );
+#else
         cvLine(rgb, PointArray[hull[hullsize-1]],
                              PointArray[hull[0]],CV_RGB(0,0,255),1, CV_AA, 0 );
+#endif
             
 	SETFLOAT(&rlist[j], PointArray[hull[i]].x);
         SETFLOAT(&rlist[j+1], PointArray[hull[i]].y);
-- 
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