libavfilter/graphparser.c File Reference

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

Go to the source code of this file.

Functions
static int	link_filter (AVFilterContext *src, int srcpad, AVFilterContext *dst, int dstpad, AVClass *log_ctx)
static int	consume_whitespace (const char *buf)
static char *	consume_string (const char **buf)
	Consumes a string from *buf.
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)
	Add to a graph a graph described by a string.

---

Function Documentation

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

Add to a graph a graph described by a string.

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 332 of file graphparser.c.

static char* consume_string

(

const char **

buf

)

[static]

Consumes a string from *buf.

Returns:

a copy of the consumed string, which should be free'd after use

Definition at line 53 of file graphparser.c.

Referenced by parse_filter(), and parse_link_name().

static int consume_whitespace

(

const char *

buf

)

[static]

Definition at line 44 of file graphparser.c.

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

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

Definition at line 121 of file graphparser.c.

Referenced by parse_filter().

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

Definition at line 192 of file graphparser.c.

Referenced by parse_inputs(), and parse_outputs().

static void free_inout

(

AVFilterInOut *

head

)

[static]

Definition at line 182 of file graphparser.c.

Referenced by avfilter_graph_parse().

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

Definition at line 207 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 30 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 213 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 164 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 260 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 97 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 293 of file graphparser.c.

Referenced by avfilter_graph_parse().