Selects array's column span.
| 1339 | |
| 1340 | // Selects array's column span. |
| 1341 | CV_IMPL CvMat* |
| 1342 | cvGetCols( const CvArr* arr, CvMat* submat, int start_col, int end_col ) |
| 1343 | { |
| 1344 | CvMat* res = 0; |
| 1345 | CvMat stub, *mat = (CvMat*)arr; |
| 1346 | int cols; |
| 1347 | |
| 1348 | if( !CV_IS_MAT( mat )) |
| 1349 | mat = cvGetMat( mat, &stub ); |
| 1350 | |
| 1351 | if( !submat ) |
| 1352 | CV_Error( CV_StsNullPtr, "" ); |
| 1353 | |
| 1354 | cols = mat->cols; |
| 1355 | if( (unsigned)start_col >= (unsigned)cols || |
| 1356 | (unsigned)end_col > (unsigned)cols ) |
| 1357 | CV_Error( CV_StsOutOfRange, "" ); |
| 1358 | |
| 1359 | { |
| 1360 | /* |
| 1361 | int* refcount = mat->refcount; |
| 1362 | |
| 1363 | if( refcount ) |
| 1364 | ++*refcount; |
| 1365 | |
| 1366 | cvDecRefData( submat ); |
| 1367 | */ |
| 1368 | submat->rows = mat->rows; |
| 1369 | submat->cols = end_col - start_col; |
| 1370 | submat->step = mat->step; |
| 1371 | submat->data.ptr = mat->data.ptr + (size_t)start_col*CV_ELEM_SIZE(mat->type); |
| 1372 | submat->type = mat->type & (submat->rows > 1 && submat->cols < cols ? ~CV_MAT_CONT_FLAG : -1); |
| 1373 | submat->refcount = 0; |
| 1374 | submat->hdr_refcount = 0; |
| 1375 | res = submat; |
| 1376 | } |
| 1377 | |
| 1378 | return res; |
| 1379 | } |
| 1380 | |
| 1381 | |
| 1382 | // Selects array diagonal |
no test coverage detected