* Filter graphs
* copyright (c) 2007 Bobby Bingham
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
- * FFmpeg is distributed in the hope that it will be useful,
+ * Libav is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
int avfilter_graph_add_filter(AVFilterGraph *graphctx, AVFilterContext *filter);
/**
- * Check for the validity of graph.
+ * Create and add a filter instance into an existing graph.
+ * The filter instance is created from the filter filt and inited
+ * with the parameters args and opaque.
*
- * A graph is considered valid if all its input and output pads are
- * connected.
+ * In case of success put in *filt_ctx the pointer to the created
+ * filter instance, otherwise set *filt_ctx to NULL.
*
- * @return 0 in case of success, a negative value otherwise
+ * @param name the instance name to give to the created filter instance
+ * @param graph_ctx the filter graph
+ * @return a negative AVERROR error code in case of failure, a non
+ * negative value otherwise
*/
-int 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 avfilter_graph_config_links(AVFilterGraph *graphctx, AVClass *log_ctx);
-
-/**
- * Configure the formats of all the links in the graph.
- */
-int avfilter_graph_config_formats(AVFilterGraph *graphctx, AVClass *log_ctx);
+int avfilter_graph_create_filter(AVFilterContext **filt_ctx, AVFilter *filt,
+ const char *name, const char *args, void *opaque,
+ AVFilterGraph *graph_ctx);
/**
* Check validity and configure all the links and formats in the graph.
*
- * @see avfilter_graph_check_validity(), avfilter_graph_config_links(),
- * avfilter_graph_config_formats()
+ * @param graphctx the filter graph
+ * @param log_ctx context used for logging
+ * @return 0 in case of success, a negative AVERROR code otherwise
*/
-int avfilter_graph_config(AVFilterGraph *graphctx, AVClass *log_ctx);
+int avfilter_graph_config(AVFilterGraph *graphctx, void *log_ctx);
/**
- * Free a graph and destroy its links.
+ * Free a graph, destroy its links, and set *graph to NULL.
+ * If *graph is NULL, do nothing.
*/
-void avfilter_graph_free(AVFilterGraph *graph);
+void avfilter_graph_free(AVFilterGraph **graph);
/**
* A linked-list of the inputs/outputs of the filter chain.
*/
int avfilter_graph_parse(AVFilterGraph *graph, const char *filters,
AVFilterInOut *inputs, AVFilterInOut *outputs,
- AVClass *log_ctx);
+ void *log_ctx);
-#endif /* AVFILTER_AVFILTERGRAPH_H */
+#endif /* AVFILTER_AVFILTERGRAPH_H */