Macros | Functions

graphparser.c File Reference

#include <string.h>
#include <stdio.h>
#include "libavutil/avstring.h"
#include "libavutil/dict.h"
#include "libavutil/mem.h"
#include "libavutil/opt.h"
#include "avfilter.h"
#include "avfilter_internal.h"
#include "filters.h"

Macros

#define WHITESPACES " \n\t\r"

Functions

static char * parse_link_name (const char **buf, void *log_ctx)

Parse the name of a link, which has the format "[linkname]".

AVFilterInOut * avfilter_inout_alloc (void)

Allocate a single AVFilterInOut entry.

void avfilter_inout_free (AVFilterInOut **inout)

Free the supplied list of AVFilterInOut and set *inout to NULL.

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

static void append_inout (AVFilterInOut **inouts, AVFilterInOut **element)

static int parse_sws_flags (const char **buf, char **dst, void *log_ctx)

int avfilter_graph_parse2 (AVFilterGraph *graph, const char *filters, AVFilterInOut **inputs, AVFilterInOut **outputs)

Add a graph described by a string to a graph.

int avfilter_graph_parse (AVFilterGraph *graph, const char *filters, AVFilterInOut *open_inputs, AVFilterInOut *open_outputs, void *log_ctx)

Add a graph described by a string to a graph.

static void pad_params_free (AVFilterPadParams **pfpp)

static void filter_params_free (AVFilterParams **pp)

static void chain_free (AVFilterChain **pch)

void avfilter_graph_segment_free (AVFilterGraphSegment **pseg)

Free the provided AVFilterGraphSegment and everything associated with it.

static int linklabels_parse (void *logctx, const char **linklabels, AVFilterPadParams ***res, unsigned *nb_res)

static int filter_parse (void *logctx, const char **filter, AVFilterParams **pp)

static int chain_parse (void *logctx, const char **pchain, AVFilterChain **pch)

int avfilter_graph_segment_parse (AVFilterGraph *graph, const char *graph_str, int flags, AVFilterGraphSegment **pseg)

Parse a textual filtergraph description into an intermediate form.

int avfilter_graph_segment_create_filters (AVFilterGraphSegment *seg, int flags)

Create filters specified in a graph segment.

static int fail_creation_pending (AVFilterGraphSegment *seg, const char *fn, const char *func)

int avfilter_graph_segment_apply_opts (AVFilterGraphSegment *seg, int flags)

Apply parsed options to filter instances in a graph segment.

int avfilter_graph_segment_init (AVFilterGraphSegment *seg, int flags)

Initialize all filter instances in a graph segment.

static unsigned find_linklabel (AVFilterGraphSegment *seg, const char *label, int output, size_t idx_chain, size_t idx_filter, AVFilterParams **pp)

static int inout_add (AVFilterInOut **inouts, AVFilterContext *f, unsigned pad_idx, const char *label)

static int link_inputs (AVFilterGraphSegment *seg, size_t idx_chain, size_t idx_filter, AVFilterInOut **inputs)

static int link_outputs (AVFilterGraphSegment *seg, size_t idx_chain, size_t idx_filter, AVFilterInOut **outputs)

int avfilter_graph_segment_link (AVFilterGraphSegment *seg, int flags, AVFilterInOut **inputs, AVFilterInOut **outputs)

Link filters in a graph segment.

static void log_unknown_opt (const AVFilterGraphSegment *seg)

int avfilter_graph_segment_apply (AVFilterGraphSegment *seg, int flags, AVFilterInOut **inputs, AVFilterInOut **outputs)

Apply all filter/link descriptions from a graph segment to the associated filtergraph.

int avfilter_graph_parse_ptr (AVFilterGraph *graph, const char *filters, AVFilterInOut **open_inputs_ptr, AVFilterInOut **open_outputs_ptr, void *log_ctx)

Add a graph described by a string to a graph.

Macro Definition Documentation

◆ WHITESPACES

#define WHITESPACES " \n\t\r"

Definition at line 35 of file graphparser.c.

Referenced by av_bprint_escape(), av_get_token(), avfilter_graph_segment_parse(), chain_parse(), filter_parse(), get_key(), linklabels_parse(), and parse_set_cookie().

Function Documentation

◆ parse_link_name()

static char * parse_link_name ( const char ** buf,

void * log_ctx )

static

Parse the name of a link, which has the format "[linkname]".

Returns: a pointer (that need to be freed after use) to the name between parenthesis

Definition at line 43 of file graphparser.c.

Referenced by linklabels_parse().

◆ extract_inout()

static AVFilterInOut * extract_inout ( const char * label,

AVFilterInOut ** links )

static

Definition at line 86 of file graphparser.c.

Referenced by avfilter_graph_parse(), and avfilter_graph_parse_ptr().

◆ append_inout()

static void append_inout ( AVFilterInOut ** inouts,

AVFilterInOut ** element )

static

Definition at line 103 of file graphparser.c.

Referenced by avfilter_graph_parse_ptr(), and inout_add().

◆ parse_sws_flags()

static int parse_sws_flags ( const char ** buf,

char ** dst,

void * log_ctx )

static

Definition at line 115 of file graphparser.c.

Referenced by avfilter_graph_segment_parse().

◆ pad_params_free()

static void pad_params_free ( AVFilterPadParams ** pfpp )

static

Definition at line 227 of file graphparser.c.

Referenced by filter_params_free(), and linklabels_parse().

◆ filter_params_free()

static void filter_params_free ( AVFilterParams ** pp )

static

Definition at line 239 of file graphparser.c.

Referenced by chain_free(), chain_parse(), and filter_parse().

◆ chain_free()

static void chain_free ( AVFilterChain ** pch )

static

Definition at line 262 of file graphparser.c.

Referenced by avfilter_graph_segment_free(), avfilter_graph_segment_parse(), and chain_parse().

◆ linklabels_parse()

static int linklabels_parse ( void * logctx,

const char ** linklabels,

AVFilterPadParams *** res,

unsigned * nb_res )

static

Definition at line 292 of file graphparser.c.

Referenced by avfilter_graph_parse_ptr(), and filter_parse().

◆ filter_parse()

static int filter_parse ( void * logctx,

const char ** filter,

AVFilterParams ** pp )

static

Definition at line 338 of file graphparser.c.

Referenced by chain_parse().

◆ chain_parse()

static int chain_parse ( void * logctx,

const char ** pchain,

AVFilterChain ** pch )

static

Definition at line 403 of file graphparser.c.

Referenced by avfilter_graph_segment_parse().

◆ fail_creation_pending()

static int fail_creation_pending ( AVFilterGraphSegment * seg,

const char * fn,

const char * func )

static

Definition at line 577 of file graphparser.c.

Referenced by avfilter_graph_segment_apply_opts(), avfilter_graph_segment_init(), and avfilter_graph_segment_link().

◆ find_linklabel()

static unsigned find_linklabel ( AVFilterGraphSegment * seg,

const char * label,

int output,

size_t idx_chain,

size_t idx_filter,

AVFilterParams ** pp )

static

Definition at line 644 of file graphparser.c.

Referenced by link_inputs(), and link_outputs().

◆ inout_add()

static int inout_add ( AVFilterInOut ** inouts,

AVFilterContext * f,

unsigned pad_idx,

const char * label )

static

Definition at line 678 of file graphparser.c.

Referenced by link_inputs(), and link_outputs().

◆ link_inputs()

static int link_inputs ( AVFilterGraphSegment * seg,

size_t idx_chain,

size_t idx_filter,

AVFilterInOut ** inputs )

static

Definition at line 702 of file graphparser.c.

Referenced by avfilter_graph_segment_link().

◆ link_outputs()

static int link_outputs ( AVFilterGraphSegment * seg,

size_t idx_chain,

size_t idx_filter,

AVFilterInOut ** outputs )

static

Definition at line 747 of file graphparser.c.

Referenced by avfilter_graph_segment_link().

◆ log_unknown_opt()

static void log_unknown_opt ( const AVFilterGraphSegment * seg )

static

Definition at line 857 of file graphparser.c.

Referenced by avfilter_graph_parse_ptr(), and avfilter_graph_segment_apply().

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