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)
	Frees a graph and destroys its links.
int	avfilter_graph_add_filter (AVFilterGraph *graph, AVFilterContext *filter)
	Adds an existing filter instance to a filter graph.
int	avfilter_graph_check_validity (AVFilterGraph *graph, AVClass *log_ctx)
	Checks for the validity of graph.
int	avfilter_graph_config_links (AVFilterGraph *graph, AVClass *log_ctx)
	Configures all the links of graphctx.
AVFilterContext *	avfilter_graph_get_filter (AVFilterGraph *graph, char *name)
	Gets a filter instance with name name from graph.
static int	query_formats (AVFilterGraph *graph, AVClass *log_ctx)
static void	pick_format (AVFilterLink *link)
static void	pick_formats (AVFilterGraph *graph)
int	avfilter_graph_config_formats (AVFilterGraph *graph, AVClass *log_ctx)
	Configures the formats of all the links in the graph.

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Function Documentation

int avfilter_graph_add_filter	(	AVFilterGraph *	graphctx,
		AVFilterContext *	filter
	)

Adds 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(), query_formats(), and video_thread().

int avfilter_graph_check_validity	(	AVFilterGraph *	graphctx,
		AVClass *	log_ctx
	)

Checks 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.

Referenced by main(), and video_thread().

int avfilter_graph_config_formats	(	AVFilterGraph *	graph,
		AVClass *	log_ctx
	)

Configures the formats of all the links in the graph.

Definition at line 193 of file avfiltergraph.c.

Referenced by main(), and video_thread().

int avfilter_graph_config_links	(	AVFilterGraph *	graphctx,
		AVClass *	log_ctx
	)

Configures all the links of graphctx.

Returns:

0 in case of success, a negative value otherwise

Definition at line 80 of file avfiltergraph.c.

Referenced by main(), and video_thread().

void avfilter_graph_destroy

(

AVFilterGraph *

graph

)

Frees a graph and destroys its links.

Definition at line 29 of file avfiltergraph.c.

Referenced by avfilter_graph_parse(), and video_thread().

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

Gets a filter instance with name name from graph.

Returns:

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

Definition at line 97 of file avfiltergraph.c.

static void pick_format

(

AVFilterLink *

link

)

[static]

Definition at line 167 of file avfiltergraph.c.

Referenced by pick_formats().

static void pick_formats

(

AVFilterGraph *

graph

)

[static]

Definition at line 179 of file avfiltergraph.c.

Referenced by avfilter_graph_config_formats().

static int query_formats	(	AVFilterGraph *	graph,
		AVClass *	log_ctx
	)			[static]

Definition at line 108 of file avfiltergraph.c.

Referenced by avfilter_graph_config_formats().