* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
-#ifndef FFMPEG_AVFILTER_GRAPH_H
-#define FFMPEG_AVFILTER_GRAPH_H
+#ifndef AVFILTER_AVFILTERGRAPH_H
+#define AVFILTER_AVFILTERGRAPH_H
#include "avfilter.h"
+typedef struct AVFilterGraph {
+ unsigned filter_count;
+ AVFilterContext **filters;
+
+ char *scale_sws_opts; ///< sws options to use for the auto-inserted scale filters
+} AVFilterGraph;
+
+/**
+ * Gets a filter instance with name name from graph.
+ *
+ * @return the pointer to the found filter instance or NULL if it
+ * cannot be found.
+ */
+AVFilterContext *avfilter_graph_get_filter(AVFilterGraph *graph, char *name);
+
/**
- * Add an existing filter instance to a filter graph.
+ * Adds an existing filter instance to a filter graph.
* @param graph The filter graph
* @param filter The filter to be added
*/
-void avfilter_graph_add_filter(AVFilterContext *graphctx, AVFilterContext *filter);
+int avfilter_graph_add_filter(AVFilterGraph *graphctx, AVFilterContext *filter);
+
+/**
+ * Checks 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 avfilter_graph_check_validity(AVFilterGraph *graphctx, AVClass *log_ctx);
+
+/**
+ * Configures all the links of graphctx.
+ *
+ * @return 0 in case of success, a negative value otherwise
+ */
+int avfilter_graph_config_links(AVFilterGraph *graphctx, AVClass *log_ctx);
+
+/**
+ * Configures the formats of all the links in the graph.
+ */
+int avfilter_graph_config_formats(AVFilterGraph *graphctx);
+
+/**
+ * Frees a graph and destroys its links.
+ */
+void avfilter_graph_destroy(AVFilterGraph *graph);
-#endif /* FFMPEG_AVFILTER_H */
+#endif /* AVFILTER_AVFILTERGRAPH_H */