diff --git a/libavfilter/avfilter.c b/libavfilter/avfilter.c index 93e866b79c..09f33e0e7c 100644 --- a/libavfilter/avfilter.c +++ b/libavfilter/avfilter.c @@ -884,6 +884,19 @@ static int process_options(AVFilterContext *ctx, AVDictionary **options, return count; } +int ff_filter_process_command(AVFilterContext *ctx, const char *cmd, + const char *arg, char *res, int res_len, int flags) +{ + const AVOption *o; + + if (!ctx->filter->priv_class) + return 0; + o = av_opt_find2(ctx->priv, cmd, NULL, AV_OPT_FLAG_RUNTIME_PARAM | AV_OPT_FLAG_FILTERING_PARAM, AV_OPT_SEARCH_CHILDREN, NULL); + if (!o) + return AVERROR(ENOSYS); + return av_opt_set(ctx->priv, cmd, arg, 0); +} + int avfilter_init_dict(AVFilterContext *ctx, AVDictionary **options) { int ret = 0; diff --git a/libavfilter/internal.h b/libavfilter/internal.h index 498bd3328d..1d77808082 100644 --- a/libavfilter/internal.h +++ b/libavfilter/internal.h @@ -411,6 +411,13 @@ static inline int ff_norm_qscale(int qscale, int type) */ int ff_filter_get_nb_threads(AVFilterContext *ctx); +/** + * Generic processing of user supplied commands that are set + * in the same way as the filter options. + */ +int ff_filter_process_command(AVFilterContext *ctx, const char *cmd, + const char *arg, char *res, int res_len, int flags); + /** * Perform any additional setup required for hardware frames. *