1 files changed, 23 insertions, 0 deletions
diff --git a/libavfilter/internal.h b/libavfilter/internal.h
index 2f0dde125d..37d085da52 100644
--- a/libavfilter/internal.h
+++ b/libavfilter/internal.h
@@ -25,6 +25,7 @@
  */
 
 #include "avfilter.h"
+#include "avfiltergraph.h"
 
 void ff_dprintf_ref(void *ctx, AVFilterBufferRef *ref, int end);
 
@@ -34,4 +35,26 @@ void ff_dprintf_link(void *ctx, AVFilterLink *link, int end);
 
 #define FF_DPRINTF_START(ctx, func) dprintf(NULL, "%-16s: ", #func)
 
+/**
+ * Check for the validity of graph.
+ *
+ * A graph is considered valid if all its input and output pads are
+ * connected.
+ *
+ * @return 0 in case of success, a negative value otherwise
+ */
+int ff_avfilter_graph_check_validity(AVFilterGraph *graphctx, AVClass *log_ctx);
+
+/**
+ * Configure all the links of graphctx.
+ *
+ * @return 0 in case of success, a negative value otherwise
+ */
+int ff_avfilter_graph_config_links(AVFilterGraph *graphctx, AVClass *log_ctx);
+
+/**
+ * Configure the formats of all the links in the graph.
+ */
+int ff_avfilter_graph_config_formats(AVFilterGraph *graphctx, AVClass *log_ctx);
+
 #endif  /* AVFILTER_INTERNAL_H */