Main libavfilter public API header. More...

#include <stddef.h>
#include "libavutil/attributes.h"
#include "libavutil/avutil.h"
#include "libavutil/buffer.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_major.h"
#include "libavfilter/version.h"

Data Structures
struct	AVFilterFormatsConfig
	Lists of formats / etc. More...

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...

struct	AVFilterPadParams
	Parameters of a filter's input or output pad. More...

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

struct	AVFilterChain
	A filterchain is a list of filter specifications. More...

struct	AVFilterGraphSegment
	A parsed representation of a filtergraph segment. More...

Macros
#define	AVFILTER_FLAG_DYNAMIC_INPUTS (1 << 0)
	The number of the filter inputs is not determined just by AVFilter.inputs.

#define	AVFILTER_FLAG_DYNAMIC_OUTPUTS (1 << 1)
	The number of the filter outputs is not determined just by AVFilter.outputs.

#define	AVFILTER_FLAG_SLICE_THREADS (1 << 2)
	The filter supports multithreading by splitting frames into multiple parts and processing them concurrently.

#define	AVFILTER_FLAG_METADATA_ONLY (1 << 3)
	The filter is a "metadata" filter - it does not modify the frame data in any way.

#define	AVFILTER_FLAG_HWDEVICE (1 << 4)
	The filter can create hardware frames using AVFilterContext.hw_device_ctx.

#define	AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC (1 << 16)
	Some filters support a generic "enable" expression option that can be used to enable or disable a filter in the timeline.

#define	AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL (1 << 17)
	Same as AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC, except that the filter will have its filter_frame() callback(s) called as usual even when the enable expression is false.

#define	AVFILTER_FLAG_SUPPORT_TIMELINE (AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC \| AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL)
	Handy mask to test whether the filter supports or no the timeline feature (internally or generically).

#define	AVFILTER_THREAD_SLICE (1 << 0)
	Process multiple parts of the frame concurrently.

#define	AVFILTER_CMD_FLAG_ONE 1
	Stop once a filter understood the command (for target=all for example), fast filters are favored automatically.

#define	AVFILTER_CMD_FLAG_FAST 2
	Only execute command when its fast (like a video out that supports contrast adjustment in hw)

Typedefs
typedef struct AVFilterPad	AVFilterPad

typedef struct AVFilterFormats	AVFilterFormats

typedef struct AVFilterChannelLayouts	AVFilterChannelLayouts

typedef int()	avfilter_action_func(AVFilterContext ctx, void arg, int jobnr, int nb_jobs)
	A function pointer passed to the AVFilterGraph::execute callback to be executed multiple times, possibly in parallel.

typedef int()	avfilter_execute_func(AVFilterContext ctx, avfilter_action_func func, void arg, int ret, int nb_jobs)
	A function executing multiple jobs, possibly in parallel.

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

Functions
unsigned	avfilter_version (void)
	Return the LIBAVFILTER_VERSION_INT constant.

const char *	avfilter_configuration (void)
	Return the libavfilter build-time configuration.

const char *	avfilter_license (void)
	Return the libavfilter license.

const char *	avfilter_pad_get_name (const AVFilterPad *pads, int pad_idx)
	Get the name of an AVFilterPad.

enum AVMediaType	avfilter_pad_get_type (const AVFilterPad *pads, int pad_idx)
	Get the type of an AVFilterPad.

unsigned	avfilter_filter_pad_count (const AVFilter *filter, int is_output)
	Get the number of elements in an AVFilter's inputs or outputs array.

int	avfilter_link (AVFilterContext src, unsigned srcpad, AVFilterContext dst, unsigned dstpad)
	Link two filters together.

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.

const AVFilter *	av_filter_iterate (void **opaque)
	Iterate over all registered filters.

const AVFilter *	avfilter_get_by_name (const char *name)
	Get a filter definition matching the given name.

int	avfilter_init_str (AVFilterContext ctx, const char args)
	Initialize a filter with the supplied parameters.

int	avfilter_init_dict (AVFilterContext ctx, AVDictionary *options)
	Initialize a filter with the supplied dictionary of options.

void	avfilter_free (AVFilterContext *filter)
	Free a filter context.

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.

const AVClass *	avfilter_get_class (void)

AVFilterGraph *	avfilter_graph_alloc (void)
	Allocate a filter graph.

AVFilterContext *	avfilter_graph_alloc_filter (AVFilterGraph graph, const AVFilter filter, const char *name)
	Create a new filter instance in a filter graph.

AVFilterContext *	avfilter_graph_get_filter (AVFilterGraph graph, const char name)
	Get a filter instance identified by instance name from graph.

int	avfilter_graph_create_filter (AVFilterContext *filt_ctx, const AVFilter filt, const char name, const char args, void opaque, AVFilterGraph graph_ctx)
	Create and add a filter instance into an existing graph.

void	avfilter_graph_set_auto_convert (AVFilterGraph *graph, unsigned flags)
	Enable or disable automatic format conversion inside the graph.

int	avfilter_graph_config (AVFilterGraph graphctx, void log_ctx)
	Check validity and configure all the links and formats in the graph.

void	avfilter_graph_free (AVFilterGraph **graph)
	Free a graph, destroy its links, and set *graph to NULL.

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.

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.

int	avfilter_graph_parse_ptr (AVFilterGraph graph, const char filters, AVFilterInOut inputs, AVFilterInOut outputs, void *log_ctx)
	Add a graph described by a string to a graph.

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_segment_parse (AVFilterGraph graph, const char graph_str, int flags, AVFilterGraphSegment **seg)
	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.

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.

int	avfilter_graph_segment_link (AVFilterGraphSegment seg, int flags, AVFilterInOut inputs, AVFilterInOut *outputs)
	Link filters in a graph segment.

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.

void	avfilter_graph_segment_free (AVFilterGraphSegment **seg)
	Free the provided AVFilterGraphSegment and everything associated with it.

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.

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.

char *	avfilter_graph_dump (AVFilterGraph graph, const char options)
	Dump a graph into a human-readable string representation.

int	avfilter_graph_request_oldest (AVFilterGraph *graph)
	Request a frame on the oldest sink link.

Detailed Description

Main libavfilter public API header.

Definition in file avfilter.h.

Data Structures

Macros

Typedefs

Enumerations

Functions

Detailed Description