avfilter.h File Reference

external API header More...

#include <stddef.h>
#include "libavutil/avutil.h"
#include "libavutil/dict.h"
#include "libavutil/frame.h"
#include "libavutil/log.h"
#include "libavutil/samplefmt.h"
#include "libavutil/pixfmt.h"
#include "libavutil/rational.h"
#include "libavfilter/version.h"

Include dependency graph for avfilter.h:

Go to the source code of this file.

Data Structures
struct	AVFilter
	Filter definition. More...
struct	AVFilterContext
	An instance of a filter. More...
struct	AVFilterLink
	A link between two filters. More...
struct	AVFilterGraph
struct	AVFilterInOut
	A linked-list of the inputs/outputs of the filter chain. More...

Macros
#define	AVFILTER_FLAG_DYNAMIC_INPUTS   (1 << 0)
	The number of the filter inputs is not determined just by AVFilter.inputs. More...
#define	AVFILTER_FLAG_DYNAMIC_OUTPUTS   (1 << 1)
	The number of the filter outputs is not determined just by AVFilter.outputs. More...
#define	AVFILTER_CMD_FLAG_ONE   1
	Stop once a filter understood the command (for target=all for example), fast filters are favored automatically. More...
#define	AVFILTER_CMD_FLAG_FAST   2
	Only execute command when its fast (like a video out that supports contrast adjustment in hw) More...

Typedefs
typedef struct AVFilterContext	AVFilterContext
typedef struct AVFilterLink	AVFilterLink
typedef struct AVFilterPad	AVFilterPad
typedef struct AVFilterFormats	AVFilterFormats
typedef struct AVFilter	AVFilter
	Filter definition. More...
typedef struct AVFilterGraph	AVFilterGraph
typedef struct AVFilterInOut	AVFilterInOut
	A linked-list of the inputs/outputs of the filter chain. More...

Enumerations
enum	{ AVFILTER_AUTO_CONVERT_ALL = 0, AVFILTER_AUTO_CONVERT_NONE = -1 }

Functions
unsigned	avfilter_version (void)
	Return the LIBAVFILTER_VERSION_INT constant. More...
const char *	avfilter_configuration (void)
	Return the libavfilter build-time configuration. More...
const char *	avfilter_license (void)
	Return the libavfilter license. More...
attribute_deprecated int	avfilter_ref_get_channels (AVFilterBufferRef *ref)
	Get the number of channels of a buffer reference. More...
int	avfilter_pad_count (const AVFilterPad *pads)
	Get the number of elements in a NULL-terminated array of AVFilterPads (e.g. More...
const char *	avfilter_pad_get_name (const AVFilterPad *pads, int pad_idx)
	Get the name of an AVFilterPad. More...
enum AVMediaType	avfilter_pad_get_type (const AVFilterPad *pads, int pad_idx)
	Get the type of an AVFilterPad. More...
int	avfilter_link (AVFilterContext *src, unsigned srcpad, AVFilterContext *dst, unsigned dstpad)
	Link two filters together. More...
void	avfilter_link_free (AVFilterLink **link)
	Free the link in *link, and set its pointer to NULL. More...
int	avfilter_link_get_channels (AVFilterLink *link)
	Get the number of channels of a link. More...
void	avfilter_link_set_closed (AVFilterLink *link, int closed)
	Set the closed field of a link. More...
int	avfilter_config_links (AVFilterContext *filter)
	Negotiate the media format, dimensions, etc of all inputs to a filter. More...
int	avfilter_process_command (AVFilterContext *filter, const char *cmd, const char *arg, char *res, int res_len, int flags)
	Make the filter instance process a command. More...
void	avfilter_register_all (void)
	Initialize the filter system. More...
int	avfilter_register (AVFilter *filter)
	Register a filter. More...
AVFilter *	avfilter_get_by_name (const char *name)
	Get a filter definition matching the given name. More...
const AVFilter *	avfilter_next (const AVFilter *prev)
	Iterate over all registered filters. More...
int	avfilter_init_str (AVFilterContext *ctx, const char *args)
	Initialize a filter with the supplied parameters. More...
int	avfilter_init_dict (AVFilterContext *ctx, AVDictionary **options)
	Initialize a filter with the supplied dictionary of options. More...
void	avfilter_free (AVFilterContext *filter)
	Free a filter context. More...
int	avfilter_insert_filter (AVFilterLink *link, AVFilterContext *filt, unsigned filt_srcpad_idx, unsigned filt_dstpad_idx)
	Insert a filter in the middle of an existing link. More...
const AVClass *	avfilter_get_class (void)
AVFilterGraph *	avfilter_graph_alloc (void)
	Allocate a filter graph. More...
AVFilterContext *	avfilter_graph_alloc_filter (AVFilterGraph *graph, const AVFilter *filter, const char *name)
	Create a new filter instance in a filter graph. More...
AVFilterContext *	avfilter_graph_get_filter (AVFilterGraph *graph, char *name)
	Get a filter instance with name name from graph. More...
int	avfilter_graph_create_filter (AVFilterContext **filt_ctx, AVFilter *filt, const char *name, const char *args, void *opaque, AVFilterGraph *graph_ctx)
	Create and add a filter instance into an existing graph. More...
void	avfilter_graph_set_auto_convert (AVFilterGraph *graph, unsigned flags)
	Enable or disable automatic format conversion inside the graph. More...
int	avfilter_graph_config (AVFilterGraph *graphctx, void *log_ctx)
	Check validity and configure all the links and formats in the graph. More...
void	avfilter_graph_free (AVFilterGraph **graph)
	Free a graph, destroy its links, and set *graph to NULL. More...
AVFilterInOut *	avfilter_inout_alloc (void)
	Allocate a single AVFilterInOut entry. More...
void	avfilter_inout_free (AVFilterInOut **inout)
	Free the supplied list of AVFilterInOut and set *inout to NULL. More...
int	avfilter_graph_parse (AVFilterGraph *graph, const char *filters, AVFilterInOut **inputs, AVFilterInOut **outputs, void *log_ctx)
	Add a graph described by a string to a graph. More...
int	avfilter_graph_parse2 (AVFilterGraph *graph, const char *filters, AVFilterInOut **inputs, AVFilterInOut **outputs)
	Add a graph described by a string to a graph. More...
int	avfilter_graph_send_command (AVFilterGraph *graph, const char *target, const char *cmd, const char *arg, char *res, int res_len, int flags)
	Send a command to one or more filter instances. More...
int	avfilter_graph_queue_command (AVFilterGraph *graph, const char *target, const char *cmd, const char *arg, int flags, double ts)
	Queue a command for one or more filter instances. More...
char *	avfilter_graph_dump (AVFilterGraph *graph, const char *options)
	Dump a graph into a human-readable string representation. More...
int	avfilter_graph_request_oldest (AVFilterGraph *graph)
	Request a frame on the oldest sink link. More...

Detailed Description

external API header

Definition in file avfilter.h.