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Data Fields
AVFilterContext Struct Reference

An instance of a filter. More...

#include <libavfilter/avfilter.h>

Data Fields

const AVClassav_class
 needed for av_log() and filters common options More...
 
const AVFilterfilter
 the AVFilter of which this is an instance More...
 
char * name
 name of this filter instance More...
 
AVFilterPadinput_pads
 array of input pads More...
 
AVFilterLink ** inputs
 array of pointers to input links More...
 
unsigned nb_inputs
 number of input pads More...
 
AVFilterPadoutput_pads
 array of output pads More...
 
AVFilterLink ** outputs
 array of pointers to output links More...
 
unsigned nb_outputs
 number of output pads More...
 
void * priv
 private data for use by the filter More...
 
struct AVFilterGraphgraph
 filtergraph this filter belongs to More...
 
int thread_type
 Type of multithreading being allowed/used. More...
 
AVFilterInternalinternal
 An opaque struct for libavfilter internal use. More...
 
struct AVFilterCommand * command_queue
 
char * enable_str
 enable expression string More...
 
void * enable
 parsed expression (AVExpr*) More...
 
double * var_values
 variable values for the enable expression More...
 
int is_disabled
 the enabled state from the last expression evaluation More...
 
AVBufferRefhw_device_ctx
 For filters which will create hardware frames, sets the device the filter should create them in. More...
 
int nb_threads
 Max number of threads allowed in this filter instance. More...
 
unsigned ready
 Ready status of the filter. More...
 

Detailed Description

An instance of a filter.

Examples:
filter_audio.c, filtering_audio.c, filtering_video.c, and transcoding.c.

Definition at line 323 of file avfilter.h.

Field Documentation

const AVClass* AVFilterContext::av_class

needed for av_log() and filters common options

Definition at line 324 of file avfilter.h.

const AVFilter* AVFilterContext::filter

the AVFilter of which this is an instance

Definition at line 326 of file avfilter.h.

char* AVFilterContext::name

name of this filter instance

Definition at line 328 of file avfilter.h.

AVFilterPad* AVFilterContext::input_pads

array of input pads

Definition at line 330 of file avfilter.h.

AVFilterLink** AVFilterContext::inputs

array of pointers to input links

Examples:
filtering_audio.c, and filtering_video.c.

Definition at line 331 of file avfilter.h.

Referenced by init_filters(), and main().

unsigned AVFilterContext::nb_inputs

number of input pads

Definition at line 332 of file avfilter.h.

AVFilterPad* AVFilterContext::output_pads

array of output pads

Definition at line 334 of file avfilter.h.

AVFilterLink** AVFilterContext::outputs

array of pointers to output links

Definition at line 335 of file avfilter.h.

unsigned AVFilterContext::nb_outputs

number of output pads

Definition at line 336 of file avfilter.h.

void* AVFilterContext::priv

private data for use by the filter

Definition at line 338 of file avfilter.h.

struct AVFilterGraph* AVFilterContext::graph

filtergraph this filter belongs to

Definition at line 340 of file avfilter.h.

int AVFilterContext::thread_type

Type of multithreading being allowed/used.

A combination of AVFILTER_THREAD_* flags.

May be set by the caller before initializing the filter to forbid some or all kinds of multithreading for this filter. The default is allowing everything.

When the filter is initialized, this field is combined using bit AND with AVFilterGraph.thread_type to get the final mask used for determining allowed threading types. I.e. a threading type needs to be set in both to be allowed.

After the filter is initialized, libavfilter sets this field to the threading type that is actually used (0 for no multithreading).

Definition at line 358 of file avfilter.h.

AVFilterInternal* AVFilterContext::internal

An opaque struct for libavfilter internal use.

Definition at line 363 of file avfilter.h.

struct AVFilterCommand* AVFilterContext::command_queue

Definition at line 365 of file avfilter.h.

char* AVFilterContext::enable_str

enable expression string

Definition at line 367 of file avfilter.h.

void* AVFilterContext::enable

parsed expression (AVExpr*)

Definition at line 368 of file avfilter.h.

double* AVFilterContext::var_values

variable values for the enable expression

Definition at line 369 of file avfilter.h.

int AVFilterContext::is_disabled

the enabled state from the last expression evaluation

Definition at line 370 of file avfilter.h.

AVBufferRef* AVFilterContext::hw_device_ctx

For filters which will create hardware frames, sets the device the filter should create them in.

All other filters will ignore this field: in particular, a filter which consumes or processes hardware frames will instead use the hw_frames_ctx field in AVFilterLink to carry the hardware context information.

Definition at line 379 of file avfilter.h.

int AVFilterContext::nb_threads

Max number of threads allowed in this filter instance.

If <= 0, its value is ignored. Overrides global number of threads set per filter graph.

Definition at line 386 of file avfilter.h.

unsigned AVFilterContext::ready

Ready status of the filter.

A non-0 value means that the filter needs activating; a higher value suggests a more urgent activation.

Definition at line 393 of file avfilter.h.


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