FFmpeg
Data Fields
AVFilterParams Struct Reference

Parameters describing a filter to be created in a filtergraph. More...

#include <avfilter.h>

Data Fields

AVFilterContextfilter
 The filter context. More...
 
char * filter_name
 Name of the AVFilter to be used. More...
 
char * instance_name
 Name to be used for this filter instance. More...
 
AVDictionaryopts
 Options to be apllied to the filter. More...
 
AVFilterPadParams ** inputs
 
unsigned nb_inputs
 
AVFilterPadParams ** outputs
 
unsigned nb_outputs
 

Detailed Description

Parameters describing a filter to be created in a filtergraph.

Created as a child of AVFilterGraphSegment by avfilter_graph_segment_parse(). Freed in avfilter_graph_segment_free().

Definition at line 1097 of file avfilter.h.

Field Documentation

◆ filter

AVFilterContext* AVFilterParams::filter

The filter context.

Created by avfilter_graph_segment_create_filters() based on AVFilterParams.filter_name and instance_name.

Callers may also create the filter context manually, then they should av_free() filter_name and set it to NULL. Such AVFilterParams instances are then skipped by avfilter_graph_segment_create_filters().

Definition at line 1108 of file avfilter.h.

Referenced by avfilter_graph_parse_ptr(), avfilter_graph_segment_apply_opts(), avfilter_graph_segment_create_filters(), avfilter_graph_segment_init(), avfilter_graph_segment_link(), find_linklabel(), graph_opts_apply(), link_inputs(), link_outputs(), and log_unknown_opt().

◆ filter_name

char* AVFilterParams::filter_name

Name of the AVFilter to be used.

An av_malloc()'ed string, set by avfilter_graph_segment_parse(). Will be passed to avfilter_get_by_name() by avfilter_graph_segment_create_filters().

Callers may av_free() this string and replace it with another one or NULL. If the caller creates the filter instance manually, this string MUST be set to NULL.

When both AVFilterParams.filter an AVFilterParams.filter_name are NULL, this AVFilterParams instance is skipped by avfilter_graph_segment_*() functions.

Definition at line 1125 of file avfilter.h.

Referenced by avfilter_graph_segment_apply_opts(), avfilter_graph_segment_create_filters(), avfilter_graph_segment_init(), avfilter_graph_segment_link(), filter_params_free(), and filter_parse().

◆ instance_name

char* AVFilterParams::instance_name

Name to be used for this filter instance.

An av_malloc()'ed string, may be set by avfilter_graph_segment_parse() or left NULL. The caller may av_free() this string and replace with another one or NULL.

Will be used by avfilter_graph_segment_create_filters() - passed as the third argument to avfilter_graph_alloc_filter(), then freed and set to NULL.

Definition at line 1137 of file avfilter.h.

Referenced by avfilter_graph_segment_create_filters(), filter_params_free(), and filter_parse().

◆ opts

AVDictionary* AVFilterParams::opts

Options to be apllied to the filter.

Filled by avfilter_graph_segment_parse(). Afterwards may be freely modified by the caller.

Will be applied to the filter by avfilter_graph_segment_apply_opts() with an equivalent of av_opt_set_dict2(filter, &opts, AV_OPT_SEARCH_CHILDREN), i.e. any unapplied options will be left in this dictionary.

Definition at line 1149 of file avfilter.h.

Referenced by avfilter_graph_segment_apply_opts(), filter_params_free(), filter_parse(), graph_opts_apply(), and log_unknown_opt().

◆ inputs

AVFilterPadParams** AVFilterParams::inputs

◆ nb_inputs

unsigned AVFilterParams::nb_inputs

◆ outputs

AVFilterPadParams** AVFilterParams::outputs

◆ nb_outputs

unsigned AVFilterParams::nb_outputs

The documentation for this struct was generated from the following file: