| 356 | } |
| 357 | |
| 358 | static int verify_expr(AVExpr * e) { |
| 359 | if (!e) return 0; |
| 360 | switch (e->type) { |
| 361 | case e_value: |
| 362 | case e_const: return 1; |
| 363 | case e_func0: |
| 364 | case e_func1: |
| 365 | case e_squish: |
| 366 | case e_ld: |
| 367 | case e_gauss: return verify_expr(e->param[0]); |
| 368 | default: return verify_expr(e->param[0]) && verify_expr(e->param[1]); |
| 369 | } |
| 370 | } |
| 371 | |
| 372 | AVExpr *ff_parse_expr(const char *s, const char * const *const_name, |
| 373 | double (* const *func1)(void *, double), const char * const *func1_name, |