@@ -23,7 +23,7 @@

 #define AVFILTER_AVFILTER_H

 #define LIBAVFILTER_VERSION_MAJOR  0

-#define LIBAVFILTER_VERSION_MINOR  2

+#define LIBAVFILTER_VERSION_MINOR  3

 #define LIBAVFILTER_VERSION_MICRO  0

 #define LIBAVFILTER_VERSION_INT AV_VERSION_INT(LIBAVFILTER_VERSION_MAJOR, \

@@ -46,6 +46,36 @@ int avfilter_graph_add_filter(AVFilterGraph *graph, AVFilterContext *filter)

     return 0;

 }

+int avfilter_graph_check_validity(AVFilterGraph *graph, AVClass *log_ctx)

+{

+    AVFilterContext *filt;

+    int i, j;

+

+    for (i=0; i < graph->filter_count; i++) {

+        filt = graph->filters[i];

+

+        for (j = 0; j < filt->input_count; j++) {

+            if (!filt->inputs[j] || !filt->inputs[j]->src) {

+                av_log(log_ctx, AV_LOG_ERROR,

+                       "Input pad \"%s\" for the filter \"%s\" of type \"%s\" not connected to any source\n",

+                       filt->input_pads[j].name, filt->name, filt->filter->name);

+                return -1;

+            }

+        }

+

+        for (j = 0; j < filt->output_count; j++) {

+            if (!filt->outputs[j] || !filt->outputs[j]->dst) {

+                av_log(log_ctx, AV_LOG_ERROR,

+                       "Output pad \"%s\" for the filter \"%s\" of type \"%s\" not connected to any destination\n",

+                       filt->output_pads[j].name, filt->name, filt->filter->name);

+                return -1;

+            }

+        }

+    }

+

+    return 0;

+}

+

 AVFilterContext *avfilter_graph_get_filter(AVFilterGraph *graph, char *name)

 {

     int i;

@@ -45,6 +45,16 @@ AVFilterContext *avfilter_graph_get_filter(AVFilterGraph *graph, char *name);

 int avfilter_graph_add_filter(AVFilterGraph *graphctx, AVFilterContext *filter);

 /**

+ * Check for the validity of \p 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);

+

+/**

  * Configure the formats of all the links in the graph.

  */

 int avfilter_graph_config_formats(AVFilterGraph *graphctx);