Fix the build of OpenCV with XIMEA on Windows 64 bits:

- crosses initializations in "cap_ximea.cpp" (which also contained some awfull "goto" instructions)
  - the "CMAKE_CL_64" variable is not initialized when using mingw

PR#1039 modified to be able to merge on branch 2.4

cmake/OpenCVFindXimea.cmake

@@ -23,7 +23,7 @@ if(WIN32)
   if(EXISTS ${XIMEA_PATH})
     set(XIMEA_FOUND 1)
     # set LIB folders
-    if(CMAKE_CL_64)
+    if(X86_64)
       set(XIMEA_LIBRARY_DIR "${XIMEA_PATH}/x64")
     else()
       set(XIMEA_LIBRARY_DIR "${XIMEA_PATH}/x86")

modules/highgui/CMakeLists.txt

@@ -167,9 +167,9 @@ if(HAVE_XIMEA)
   list(APPEND highgui_srcs src/cap_ximea.cpp)
   ocv_include_directories(${XIMEA_PATH})
   if(XIMEA_LIBRARY_DIR)
-    link_directories(${XIMEA_LIBRARY_DIR})
+    link_directories("${XIMEA_LIBRARY_DIR}")
   endif() 
-  if(CMAKE_CL_64)
+  if(X86_64)
     list(APPEND HIGHGUI_LIBRARIES m3apiX64)
   else()
     list(APPEND HIGHGUI_LIBRARIES m3api)

modules/highgui/src/cap_ximea.cpp

@@ -62,74 +62,95 @@ void CvCaptureCAM_XIMEA::init()
 // Initialize camera input
 bool CvCaptureCAM_XIMEA::open( int wIndex )
 {
-#define HandleXiResult(res) if (res!=XI_OK)  goto error;
+    bool res = true;
-
     int mvret = XI_OK;
 
-    if(numDevices == 0)
+    if(0 == numDevices)
-        return false;
+    {
-
+      res = false;
-    if((mvret = xiOpenDevice( wIndex, &hmv)) != XI_OK)
+    }
+    else if(XI_OK != (mvret = xiOpenDevice(wIndex, &hmv)))
     {
       errMsg("Open XI_DEVICE failed", mvret);
-        return false;
+      res = false;
     }
-
+    else
-    // always use auto exposure/gain
+    {
-    mvret = xiSetParamInt( hmv, XI_PRM_AEAG, 1);
-    HandleXiResult(mvret);
-
       int width   = 0;
-    mvret = xiGetParamInt( hmv, XI_PRM_WIDTH, &width);
-    HandleXiResult(mvret);
-
       int height  = 0;
-    mvret = xiGetParamInt( hmv, XI_PRM_HEIGHT, &height);
-    HandleXiResult(mvret);
-
       int isColor = 0;
-    mvret = xiGetParamInt(hmv, XI_PRM_IMAGE_IS_COLOR, &isColor);
-    HandleXiResult(mvret);
 
+      // always use auto exposure/gain
+      if(XI_OK != (mvret = xiSetParamInt(hmv, XI_PRM_AEAG, 1)))
+      {
+        res = false;
+      }
+      else if(XI_OK != (mvret = xiGetParamInt(hmv, XI_PRM_WIDTH, &width)))
+      {
+        res = false;
+      }
+      else if(XI_OK != (mvret = xiGetParamInt(hmv, XI_PRM_HEIGHT, &height)))
+      {
+        res = false;
+      }
+      else if(XI_OK != (mvret = xiGetParamInt(hmv, XI_PRM_IMAGE_IS_COLOR, &isColor)))
+      {
+        res = false;
+      }
+      else
+      {
         if(isColor) // for color cameras
         {
           // default image format RGB24
-        mvret = xiSetParamInt( hmv, XI_PRM_IMAGE_DATA_FORMAT, XI_RGB24);
+          if(XI_OK != (mvret = xiSetParamInt(hmv, XI_PRM_IMAGE_DATA_FORMAT, XI_RGB24)))
-        HandleXiResult(mvret);
+          {
-
+            res = false;
+          }
           // always use auto white ballance for color cameras
-        mvret = xiSetParamInt( hmv, XI_PRM_AUTO_WB, 1);
+          else if(XI_OK != (mvret = xiSetParamInt(hmv, XI_PRM_AUTO_WB, 1)))
-        HandleXiResult(mvret);
+          {
-
+            res = false;
+          }
+          else
+          {
             // allocate frame buffer for RGB24 image
             frame = cvCreateImage(cvSize(width, height), IPL_DEPTH_8U, 3);
           }
+        }
         else // for mono cameras
         {
           // default image format MONO8
-        mvret = xiSetParamInt( hmv, XI_PRM_IMAGE_DATA_FORMAT, XI_MONO8);
+          if(XI_OK != (mvret = xiSetParamInt(hmv, XI_PRM_IMAGE_DATA_FORMAT, XI_MONO8)))
-        HandleXiResult(mvret);
+          {
-
+            res = false;
+          }
+          else
+          {
             // allocate frame buffer for MONO8 image
             frame = cvCreateImage(cvSize(width, height), IPL_DEPTH_8U, 1);
           }
+        }
+      }
 
+      if(true == res)
+      {
         //default capture timeout 10s
         timeout = 10000;
 
-    mvret = xiStartAcquisition(hmv);
+        if(XI_OK != (mvret = xiStartAcquisition(hmv)))
-    if(mvret != XI_OK)
         {
           errMsg("StartAcquisition XI_DEVICE failed", mvret);
-        goto error;
+          res = false;
         }
-    return true;
+      }
-
+      else
-error:
+      {
         errMsg("Open XI_DEVICE failed", mvret);
         xiCloseDevice(hmv);
         hmv = NULL;
-    return false;
+      }
+    }
+    return true;
 }
 
 /**********************************************************************************/