int opt_default(const char *opt, const char *arg) { const AVOption *oc, *of, *os, *oswr; char opt_stripped[128]; const char *p; const AVClass *cc = avcodec_get_class(), *fc = avformat_get_class(), *sc, *swr_class; if (!(p = strchr(opt, ':'))) p = opt + strlen(opt); av_strlcpy(opt_stripped, opt, FFMIN(sizeof(opt_stripped), p - opt + 1)); if ((oc = av_opt_find(&cc, opt_stripped, NULL, 0, AV_OPT_SEARCH_CHILDREN | AV_OPT_SEARCH_FAKE_OBJ)) || ((opt[0] == 'v' || opt[0] == 'a' || opt[0] == 's') && (oc = av_opt_find(&cc, opt + 1, NULL, 0, AV_OPT_SEARCH_FAKE_OBJ)))) av_dict_set(&codec_opts, opt, arg, FLAGS(oc)); if ((of = av_opt_find(&fc, opt, NULL, 0, AV_OPT_SEARCH_CHILDREN | AV_OPT_SEARCH_FAKE_OBJ))) av_dict_set(&format_opts, opt, arg, FLAGS(of)); #if CONFIG_SWSCALE sc = sws_get_class(); if ((os = av_opt_find(&sc, opt, NULL, 0, AV_OPT_SEARCH_CHILDREN | AV_OPT_SEARCH_FAKE_OBJ))) { // XXX we only support sws_flags, not arbitrary sws options int ret = av_opt_set(sws_opts, opt, arg, 0); if (ret < 0) { av_log(NULL, AV_LOG_ERROR, "Error setting option %s.\n", opt); return ret; } } #endif swr_class = swr_get_class(); if (!oc && !of && !os && (oswr = av_opt_find(&swr_class, opt, NULL, 0, AV_OPT_SEARCH_CHILDREN | AV_OPT_SEARCH_FAKE_OBJ))) { int ret = av_opt_set(swr_opts, opt, arg, 0); if (ret < 0) { av_log(NULL, AV_LOG_ERROR, "Error setting option %s.\n", opt); return ret; } } if (oc || of || os || oswr) return 0; av_log(NULL, AV_LOG_ERROR, "Unrecognized option '%s'\n", opt); return AVERROR_OPTION_NOT_FOUND; }