Merge pull request #547 from volvet/add-build-for-scene-change-detect-for-desktop

add scene change detector for screen in builder

codec/processing/src/scenechangedetection/SceneChangeDetection.cpp

@@ -41,6 +41,8 @@ IStrategy * BuildSceneChangeDetection(EMethods eMethod, int32_t iCpuFlag){
     return new CSceneChangeDetection<CSceneChangeDetectorVideo>(eMethod, iCpuFlag);
     break;
   case METHOD_SCENE_CHANGE_DETECTION_SCREEN:
+    return new CSceneChangeDetection<CSceneChangeDetectorScreen>(eMethod, iCpuFlag);
+    break;
   default:
     // not support yet
     return NULL;