static int write_option(void *optctx, const OptionDef *po, const char *opt, const char *arg) { /* new-style options contain an offset into optctx, old-style address of * a global var*/ void *dst = po->flags & (OPT_OFFSET | OPT_SPEC) ? (uint8_t *)optctx + po->u.off : po->u.dst_ptr; int *dstcount; if (po->flags & OPT_SPEC) { SpecifierOpt **so = dst; char *p = strchr(opt, ':'); dstcount = (int *)(so + 1); *so = grow_array(*so, sizeof(**so), dstcount, *dstcount + 1); (*so)[*dstcount - 1].specifier = av_strdup(p ? p + 1 : ""); dst = &(*so)[*dstcount - 1].u; } if (po->flags & OPT_STRING) { char *str; str = av_strdup(arg); av_freep(dst); *(char **)dst = str; } else if (po->flags & OPT_BOOL || po->flags & OPT_INT) { *(int *)dst = parse_number_or_die(opt, arg, OPT_INT64, INT_MIN, INT_MAX); } else if (po->flags & OPT_INT64) { *(int64_t *)dst = parse_number_or_die(opt, arg, OPT_INT64, INT64_MIN, INT64_MAX); } else if (po->flags & OPT_TIME) { *(int64_t *)dst = parse_time_or_die(opt, arg, 1); } else if (po->flags & OPT_FLOAT) { *(float *)dst = parse_number_or_die(opt, arg, OPT_FLOAT, -INFINITY, INFINITY); } else if (po->flags & OPT_DOUBLE) { *(double *)dst = parse_number_or_die(opt, arg, OPT_DOUBLE, -INFINITY, INFINITY); } else if (po->u.func_arg) { int ret = po->u.func_arg(optctx, opt, arg); if (ret < 0) { av_log(NULL, AV_LOG_ERROR, "Failed to set value '%s' for option '%s'\n", arg, opt); return ret; } } if (po->flags & OPT_EXIT) exit_program(0); return 0; }