* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
-#ifndef FFMPEG_AVFILTERGRAPH_H
-#define FFMPEG_AVFILTERGRAPH_H
+#ifndef AVFILTER_AVFILTERGRAPH_H
+#define AVFILTER_AVFILTERGRAPH_H
#include "avfilter.h"
-/** Linked-list of filters to create for an AVFilterGraphDesc */
-typedef struct AVFilterGraphDescFilter
-{
- char *name; ///< filter instance name
- char *filter; ///< name of filter type
- char *args; ///< filter parameters
- struct AVFilterGraphDescFilter *next;
-} AVFilterGraphDescFilter;
+typedef struct AVFilterGraph {
+ unsigned filter_count;
+ AVFilterContext **filters;
-/** Linked-list of links between filters */
-typedef struct AVFilterGraphDescLink
-{
- /* TODO: allow referencing pads by name, not just by index */
- char *src; ///< name of the source filter
- unsigned srcpad; ///< index of the output pad on the source filter
-
- char *dst; ///< name of the dest filter
- unsigned dstpad; ///< index of the input pad on the dest filter
-
- struct AVFilterGraphDescLink *next;
-} AVFilterGraphDescLink;
-
-/** Linked-list of filter pads to be exported from the graph */
-typedef struct AVFilterGraphDescExport
-{
- /* TODO: allow referencing pads by name, not just by index */
- char *name; ///< name of the exported pad
- char *filter; ///< name of the filter
- unsigned pad; ///< index of the pad to be exported
-
- struct AVFilterGraphDescExport *next;
-} AVFilterGraphDescExport;
-
-/** Sections of a filter graph description */
-typedef enum
-{
- SEC_NONE = 0,
- SEC_FILTERS,
- SEC_LINKS,
- SEC_INPUTS,
- SEC_OUTPUTS
-} AVFilterGraphDescSection;
-
-/** Description of a graph to be loaded from a file, etc */
-typedef struct
-{
- AVFilterGraphDescFilter *filters; ///< filters in the graph
- AVFilterGraphDescLink *links; ///< links between the filters
- AVFilterGraphDescExport *inputs; ///< inputs to export
- AVFilterGraphDescExport *outputs; ///< outputs to export
-} AVFilterGraphDesc;
-
-typedef struct
-{
- AVFilterGraphDescSection section; ///< current section being parsed
-
- AVFilterGraphDescFilter **filterp; ///< last parsed filter
- AVFilterGraphDescLink **linkp; ///< last parsed link
- AVFilterGraphDescExport **inputp; ///< last parsed exported input
- AVFilterGraphDescExport **outputp; ///< last parsed exported output
-} AVFilterGraphDescParser;
-
-/**
- * Parse a graph composed of a simple chain of filters which is described by
- * a single string.
- * @param filters String listing filters and their arguments.
- * @return The parsed graph description.
- */
-AVFilterGraphDesc *avfilter_graph_parse_chain(const char *filters);
-
-/** Parse a line of a filter graph description.
- * @param desc Pointer to an AVFilterGraphDesc pointer. If *desc is NULL,
- * a new AVFilterGraphDesc structure will be created for you.
- * Must be the same between multiple invocations when parsing
- * the same description.
- * @param parser Parser state. Must be the same between multiple invocations
- * when parsing the same description
- * @param line Line of the graph description to parse.
- * @return Zero on success, negative on error.
- */
-int avfilter_graph_parse_desc(AVFilterGraphDesc **desc,
- AVFilterGraphDescParser **parser,
- char *line);
-
-/**
- * Load a filter graph description from a file
- * @param filename Name of the file from which to load the description
- * @return Pointer to the description on success. NULL on failure
- */
-AVFilterGraphDesc *avfilter_graph_load_desc(const char *filename);
+ char *scale_sws_opts; ///< sws options to use for the auto-inserted scale filters
+} AVFilterGraph;
/**
- * Free a filter graph description
- * @param desc The graph description to free
+ * Get from \p graph a filter instance with name \p name.
+ *
+ * @return the pointer to the found filter instance or NULL if it
+ * cannot be found.
*/
-void avfilter_graph_free_desc(AVFilterGraphDesc *desc);
+AVFilterContext *avfilter_graph_get_filter(AVFilterGraph *graph, char *name);
/**
* Add 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);
+
+/**
+ * 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
+ * Configure the formats of all the links in the graph.
*/
-int avfilter_graph_config_formats(AVFilterContext *graphctx);
+int avfilter_graph_config_formats(AVFilterGraph *graphctx);
/**
- * Configure the resolution, etc of all links in the graph
+ * Free a graph and destroy its links.
*/
-int avfilter_graph_config_links(AVFilterContext *graphctx);
+void avfilter_destroy_graph(AVFilterGraph *graph);
-#endif /* FFMPEG_AVFILTER_H */
+#endif /* AVFILTER_AVFILTERGRAPH_H */
projects / ffmpeg / blobdiff