73                CvSize roi,  in icvSnake8uC1R()  argument
102     int map_width = ((roi.width - 1) >> 3) + 1;  in icvSnake8uC1R()
103     int map_height = ((roi.height - 1) >> 3) + 1;  in icvSnake8uC1R()
110     CvMat _src = cvMat( roi.height, roi.width, CV_8UC1, src );  in icvSnake8uC1R()
121     if( (roi.height <= 0) || (roi.width <= 0) )  in icvSnake8uC1R()
123     if( srcStep < roi.width )  in icvSnake8uC1R()
149         gradient = (float *) cvAlloc( roi.height * roi.width * sizeof( float ));  in icvSnake8uC1R()
205             int right = MIN( roi.width - 1 - pt[i].x, win.width >> 1 );  in icvSnake8uC1R()
207             int bottom = MIN( roi.height - 1 - pt[i].y, win.height >> 1 );  in icvSnake8uC1R()
301                             int bottomshift = MIN( 1, roi.height - (y + 1)*WTILE_SIZE );  in icvSnake8uC1R()
302                             int rightshift = MIN( 1, roi.width - (x + 1)*WTILE_SIZE );  in icvSnake8uC1R()
315                                     gradient[(y*WTILE_SIZE + l) * roi.width + x*WTILE_SIZE + m] =  in icvSnake8uC1R()
325                             gradient[(pt[i].y + j) * roi.width + pt[i].x + k];  in icvSnake8uC1R()