libavfilter/avfiltergraph.c File Reference

#include <ctype.h>
#include <string.h>
#include "avfilter.h"
#include "avfiltergraph.h"

Go to the source code of this file.

Functions
void	avfilter_graph_destroy (AVFilterGraph *graph)
	Free a graph and destroy its links.
int	avfilter_graph_add_filter (AVFilterGraph *graph, AVFilterContext *filter)
	Add an existing filter instance to a filter graph.
int	avfilter_graph_check_validity (AVFilterGraph *graph, AVClass *log_ctx)
	Check for the validity of graph.
AVFilterContext *	avfilter_graph_get_filter (AVFilterGraph *graph, char *name)
	Get from graph a filter instance with name name.
static int	query_formats (AVFilterGraph *graph)
static void	pick_format (AVFilterLink *link)
static void	pick_formats (AVFilterGraph *graph)
int	avfilter_graph_config_formats (AVFilterGraph *graph)
	Configure the formats of all the links in the graph.

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Function Documentation

int avfilter_graph_add_filter	(	AVFilterGraph *	graphctx,
		AVFilterContext *	filter
	)

Add an existing filter instance to a filter graph.

Parameters:

	graph	The filter graph
	filter	The filter to be added

Definition at line 37 of file avfiltergraph.c.

Referenced by create_filter(), and query_formats().

int avfilter_graph_check_validity	(	AVFilterGraph *	graphctx,
		AVClass *	log_ctx
	)

Check for the validity of graph.

A graph is considered valid if all its input and output pads are connected.

Returns:

0 in case of success, a negative value otherwise

Definition at line 50 of file avfiltergraph.c.

int avfilter_graph_config_formats

(

AVFilterGraph *

graph

)

Configure the formats of all the links in the graph.

Definition at line 172 of file avfiltergraph.c.

void avfilter_graph_destroy

(

AVFilterGraph *

graph

)

Free a graph and destroy its links.

Definition at line 29 of file avfiltergraph.c.

Referenced by avfilter_graph_parse().

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

Get from graph a filter instance with name name.

Returns:

the pointer to the found filter instance or NULL if it cannot be found.

Definition at line 80 of file avfiltergraph.c.

static void pick_format

(

AVFilterLink *

link

)

[static]

Definition at line 146 of file avfiltergraph.c.

Referenced by pick_formats().

static void pick_formats

(

AVFilterGraph *

graph

)

[static]

Definition at line 158 of file avfiltergraph.c.

Referenced by avfilter_graph_config_formats().

static int query_formats

(

AVFilterGraph *

graph

)

[static]

Definition at line 91 of file avfiltergraph.c.

Referenced by avfilter_graph_config_formats().