libavfilter/graphparser.c File Reference

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

Go to the source code of this file.

Defines
#define	WHITESPACES   " \n\t"
Functions
static int	link_filter (AVFilterContext *src, int srcpad, AVFilterContext *dst, int dstpad, AVClass *log_ctx)
static char *	parse_link_name (const char **buf, AVClass *log_ctx)
	Parse "[linkname]".
static AVFilterContext *	create_filter (AVFilterGraph *ctx, int index, const char *filt_name, const char *args, AVClass *log_ctx)
static AVFilterContext *	parse_filter (const char **buf, AVFilterGraph *graph, int index, AVClass *log_ctx)
	Parse "filter=params".
static void	free_inout (AVFilterInOut *head)
static AVFilterInOut *	extract_inout (const char *label, AVFilterInOut **links)
static void	insert_inout (AVFilterInOut **inouts, AVFilterInOut *element)
static int	link_filter_inouts (AVFilterContext *filter, AVFilterInOut **curr_inputs, AVFilterInOut **open_inputs, AVClass *log_ctx)
static int	parse_inputs (const char **buf, AVFilterInOut **curr_inputs, AVFilterInOut **open_outputs, AVClass *log_ctx)
static int	parse_outputs (const char **buf, AVFilterInOut **curr_inputs, AVFilterInOut **open_inputs, AVFilterInOut **open_outputs, AVClass *log_ctx)
int	avfilter_graph_parse (AVFilterGraph *graph, const char *filters, AVFilterInOut *open_inputs, AVFilterInOut *open_outputs, AVClass *log_ctx)
	Adds a graph described by a string to a graph.

---

Define Documentation

#define WHITESPACES   " \n\t"

Definition at line 31 of file graphparser.c.

Referenced by av_get_token(), avfilter_graph_parse(), parse_inputs(), and parse_outputs().

---

Function Documentation

int avfilter_graph_parse	(	AVFilterGraph *	graph,
		const char *	filters,
		AVFilterInOut *	inputs,
		AVFilterInOut *	outputs,
		AVClass *	log_ctx
	)

Adds a graph described by a string to a graph.

Parameters:

	graph	the filter graph where to link the parsed graph context
	filters	string to be parsed
	inputs	linked list to the inputs of the graph
	outputs	linked list to the outputs of the graph

Returns:

zero on success, -1 on error

Definition at line 287 of file graphparser.c.

Referenced by main(), and video_thread().

static AVFilterContext* create_filter	(	AVFilterGraph *	ctx,
		int	index,
		const char *	filt_name,
		const char *	args,
		AVClass *	log_ctx
	)			[static]

Definition at line 76 of file graphparser.c.

Referenced by parse_filter().

static AVFilterInOut* extract_inout	(	const char *	label,
		AVFilterInOut **	links
	)			[static]

Definition at line 147 of file graphparser.c.

Referenced by parse_inputs(), and parse_outputs().

static void free_inout

(

AVFilterInOut *

head

)

[static]

Definition at line 137 of file graphparser.c.

Referenced by avfilter_graph_parse().

static void insert_inout	(	AVFilterInOut **	inouts,
		AVFilterInOut *	element
	)			[static]

Definition at line 162 of file graphparser.c.

Referenced by link_filter_inouts(), parse_inputs(), and parse_outputs().

static int link_filter	(	AVFilterContext *	src,
		int	srcpad,
		AVFilterContext *	dst,
		int	dstpad,
		AVClass *	log_ctx
	)			[static]

Definition at line 33 of file graphparser.c.

Referenced by link_filter_inouts(), and parse_outputs().

static int link_filter_inouts	(	AVFilterContext *	filter,
		AVFilterInOut **	curr_inputs,
		AVFilterInOut **	open_inputs,
		AVClass *	log_ctx
	)			[static]

Definition at line 168 of file graphparser.c.

Referenced by avfilter_graph_parse().

static AVFilterContext* parse_filter	(	const char **	buf,
		AVFilterGraph *	graph,
		int	index,
		AVClass *	log_ctx
	)			[static]

Parse "filter=params".

Definition at line 119 of file graphparser.c.

Referenced by avfilter_graph_parse().

static int parse_inputs	(	const char **	buf,
		AVFilterInOut **	curr_inputs,
		AVFilterInOut **	open_outputs,
		AVClass *	log_ctx
	)			[static]

Definition at line 215 of file graphparser.c.

Referenced by avfilter_graph_parse().

static char* parse_link_name	(	const char **	buf,
		AVClass *	log_ctx
	)			[static]

Parse "[linkname]".

Parameters:

name

a pointer (that need to be free'd after use) to the name between parenthesis

Definition at line 52 of file graphparser.c.

Referenced by parse_inputs(), and parse_outputs().

static int parse_outputs	(	const char **	buf,
		AVFilterInOut **	curr_inputs,
		AVFilterInOut **	open_inputs,
		AVFilterInOut **	open_outputs,
		AVClass *	log_ctx
	)			[static]

Definition at line 248 of file graphparser.c.

Referenced by avfilter_graph_parse().