#include "libavutil/internal.h"
#include "avfilter.h"
#include "formats.h"
#include "framequeue.h"
#include "video.h"

Data Structures
struct	AVFilterCommand

struct	AVFilterPad
	A filter pad used for either input or output. More...

struct	AVFilterGraphInternal

struct	AVFilterInternal

Macros
#define	AVFILTERPAD_FLAG_NEEDS_WRITABLE (1 << 0)
	The filter expects writable frames from its input link, duplicating data buffers if needed. More...

#define	AVFILTERPAD_FLAG_FREE_NAME (1 << 1)
	The pad's name is allocated and should be freed generically. More...

#define	FILTER_QUERY_FUNC(func)

#define	FILTER_PIXFMTS_ARRAY(array)

#define	FILTER_SAMPLEFMTS_ARRAY(array)

#define	FILTER_PIXFMTS(...) FILTER_PIXFMTS_ARRAY(((const enum AVPixelFormat []) { __VA_ARGS__, AV_PIX_FMT_NONE }))

#define	FILTER_SAMPLEFMTS(...) FILTER_SAMPLEFMTS_ARRAY(((const enum AVSampleFormat[]) { __VA_ARGS__, AV_SAMPLE_FMT_NONE }))

#define	FILTER_SINGLE_PIXFMT(pix_fmt_)

#define	FILTER_SINGLE_SAMPLEFMT(sample_fmt_)

#define	FILTER_INOUTPADS(inout, array)

#define	FILTER_INPUTS(array) FILTER_INOUTPADS(inputs, (array))

#define	FILTER_OUTPUTS(array) FILTER_INOUTPADS(outputs, (array))

#define	D2TS(d) (isnan(d) ? AV_NOPTS_VALUE : (int64_t)(d))

#define	TS2D(ts) ((ts) == AV_NOPTS_VALUE ? NAN : (double)(ts))

#define	TS2T(ts, tb) ((ts) == AV_NOPTS_VALUE ? NAN : (double)(ts) * av_q2d(tb))

#define	FF_TPRINTF_START(ctx, func) ff_tlog(NULL, "%-16s: ", #func)

#define	AVFILTER_DEFINE_CLASS_EXT(name, desc, options)

#define	AVFILTER_DEFINE_CLASS(fname) AVFILTER_DEFINE_CLASS_EXT(fname, #fname, fname##_options)

#define	FF_INLINK_IDX(link) ((int)((link)->dstpad - (link)->dst->input_pads))
	Find the index of a link. More...

#define	FF_OUTLINK_IDX(link) ((int)((link)->srcpad - (link)->src->output_pads))

#define	FF_FILTER_FLAG_HWFRAME_AWARE (1 << 0)
	The filter is aware of hardware frames, and any hardware frame context should not be automatically propagated through it. More...

Enumerations
enum	FilterFormatsState { FF_FILTER_FORMATS_PASSTHROUGH = 0, FF_FILTER_FORMATS_QUERY_FUNC, FF_FILTER_FORMATS_PIXFMT_LIST, FF_FILTER_FORMATS_SAMPLEFMTS_LIST, FF_FILTER_FORMATS_SINGLE_PIXFMT, FF_FILTER_FORMATS_SINGLE_SAMPLEFMT }

Functions
void	ff_avfilter_graph_update_heap (AVFilterGraph graph, AVFilterLink link)
	Update the position of a link in the age heap. More...

static av_always_inline int	ff_filter_execute (AVFilterContext ctx, avfilter_action_func func, void arg, int ret, int nb_jobs)

int	ff_fmt_is_in (int fmt, const int *fmts)
	Tell if an integer is contained in the provided -1-terminated list of integers. More...

av_warn_unused_result int	ff_parse_pixel_format (enum AVPixelFormat ret, const char arg, void *log_ctx)
	Parse a pixel format. More...

av_warn_unused_result int	ff_parse_sample_rate (int ret, const char arg, void *log_ctx)
	Parse a sample rate. More...

av_warn_unused_result int	ff_parse_channel_layout (AVChannelLayout ret, int nret, const char arg, void log_ctx)
	Parse a channel layout or a corresponding integer representation. More...

void	ff_update_link_current_pts (AVFilterLink *link, int64_t pts)

void	ff_avfilter_link_set_in_status (AVFilterLink *link, int status, int64_t pts)
	Set the status field of a link from the source filter. More...

void	ff_avfilter_link_set_out_status (AVFilterLink *link, int status, int64_t pts)
	Set the status field of a link from the destination filter. More...

void	ff_command_queue_pop (AVFilterContext *filter)

char *	ff_get_ref_perms_string (char *buf, size_t buf_size, int perms)

void	ff_tlog_link (void ctx, AVFilterLink link, int end)

int	ff_append_inpad (AVFilterContext f, AVFilterPad p)
	Append a new input/output pad to the filter's list of such pads. More...

int	ff_append_outpad (AVFilterContext f, AVFilterPad p)

int	ff_append_inpad_free_name (AVFilterContext f, AVFilterPad p)

int	ff_append_outpad_free_name (AVFilterContext f, AVFilterPad p)

int	ff_request_frame (AVFilterLink *link)
	Request an input frame from the filter at the other end of the link. More...

int	ff_filter_frame (AVFilterLink link, AVFrame frame)
	Send a frame of data to the next filter. More...

AVFilterContext *	ff_filter_alloc (const AVFilter filter, const char inst_name)
	Allocate a new filter context and return it. More...

int	ff_filter_activate (AVFilterContext *filter)

void	ff_filter_graph_remove_filter (AVFilterGraph graph, AVFilterContext filter)
	Remove a filter from a graph;. More...

int	ff_filter_graph_run_once (AVFilterGraph *graph)
	Run one round of processing on a filter graph. More...

int	ff_filter_get_nb_threads (AVFilterContext *ctx) av_pure
	Get number of threads for current filter instance. More...

int	ff_filter_process_command (AVFilterContext ctx, const char cmd, const char arg, char res, int res_len, int flags)
	Generic processing of user supplied commands that are set in the same way as the filter options. More...

int	ff_filter_init_hw_frames (AVFilterContext avctx, AVFilterLink link, int default_pool_size)
	Perform any additional setup required for hardware frames. More...

Detailed Description

internal API functions

Definition in file internal.h.

Macro Definition Documentation

◆ AVFILTERPAD_FLAG_NEEDS_WRITABLE

#define AVFILTERPAD_FLAG_NEEDS_WRITABLE (1 << 0)

The filter expects writable frames from its input link, duplicating data buffers if needed.

input pads only.

Definition at line 68 of file internal.h.

◆ AVFILTERPAD_FLAG_FREE_NAME

#define AVFILTERPAD_FLAG_FREE_NAME (1 << 1)

The pad's name is allocated and should be freed generically.

Definition at line 73 of file internal.h.

◆ FILTER_QUERY_FUNC

#define FILTER_QUERY_FUNC ( func )

Value:

.formats.query_func = func, \

.formats_state = FF_FILTER_FORMATS_QUERY_FUNC

Definition at line 167 of file internal.h.

◆ FILTER_PIXFMTS_ARRAY

#define FILTER_PIXFMTS_ARRAY ( array )

Value:

.formats.pixels_list = array, \

.formats_state = FF_FILTER_FORMATS_PIXFMT_LIST

Definition at line 170 of file internal.h.

◆ FILTER_SAMPLEFMTS_ARRAY

#define FILTER_SAMPLEFMTS_ARRAY ( array )

Value:

.formats.samples_list = array, \

.formats_state = FF_FILTER_FORMATS_SAMPLEFMTS_LIST

Definition at line 173 of file internal.h.

◆ FILTER_PIXFMTS

#define FILTER_PIXFMTS ( ... ) FILTER_PIXFMTS_ARRAY(((const enum AVPixelFormat []) { __VA_ARGS__, AV_PIX_FMT_NONE }))

Definition at line 176 of file internal.h.

◆ FILTER_SAMPLEFMTS

#define FILTER_SAMPLEFMTS ( ... ) FILTER_SAMPLEFMTS_ARRAY(((const enum AVSampleFormat[]) { __VA_ARGS__, AV_SAMPLE_FMT_NONE }))

Definition at line 178 of file internal.h.

◆ FILTER_SINGLE_PIXFMT

#define FILTER_SINGLE_PIXFMT ( pix_fmt_ )

Value:

.formats.pix_fmt = pix_fmt_, \

.formats_state = FF_FILTER_FORMATS_SINGLE_PIXFMT

Definition at line 180 of file internal.h.

◆ FILTER_SINGLE_SAMPLEFMT

#define FILTER_SINGLE_SAMPLEFMT ( sample_fmt_ )

Value:

.formats.sample_fmt = sample_fmt_, \

.formats_state = FF_FILTER_FORMATS_SINGLE_SAMPLEFMT

Definition at line 183 of file internal.h.

◆ FILTER_INOUTPADS

#define FILTER_INOUTPADS	(	inout,
		array
	)

Value:

.inout = array, \

.nb_ ## inout = FF_ARRAY_ELEMS(array)

Definition at line 187 of file internal.h.

◆ FILTER_INPUTS

#define FILTER_INPUTS ( array ) FILTER_INOUTPADS(inputs, (array))

Definition at line 190 of file internal.h.

◆ FILTER_OUTPUTS

#define FILTER_OUTPUTS ( array ) FILTER_INOUTPADS(outputs, (array))

Definition at line 191 of file internal.h.

◆ D2TS

#define D2TS ( d ) (isnan(d) ? AV_NOPTS_VALUE : (int64_t)(d))

Definition at line 261 of file internal.h.

◆ TS2D

#define TS2D ( ts ) ((ts) == AV_NOPTS_VALUE ? NAN : (double)(ts))

Definition at line 262 of file internal.h.

◆ TS2T

#define TS2T	(	ts,
		tb
	)	((ts) == AV_NOPTS_VALUE ? NAN : (double)(ts) * av_q2d(tb))

Definition at line 263 of file internal.h.

◆ FF_TPRINTF_START

#define FF_TPRINTF_START	(	ctx,
		func
	)	ff_tlog(NULL, "%-16s: ", #func)

Definition at line 267 of file internal.h.

◆ AVFILTER_DEFINE_CLASS_EXT

#define AVFILTER_DEFINE_CLASS_EXT	(	name,
		desc,
		options
	)

Value:

    static const AVClass name##_class = {       \
        .class_name = desc,                     \
        .item_name  = av_default_item_name,     \
        .option     = options,                  \
        .version    = LIBAVUTIL_VERSION_INT,    \
        .category   = AV_CLASS_CATEGORY_FILTER, \
    }

Definition at line 317 of file internal.h.

◆ AVFILTER_DEFINE_CLASS

#define AVFILTER_DEFINE_CLASS ( fname ) AVFILTER_DEFINE_CLASS_EXT(fname, #fname, fname##_options)

Definition at line 325 of file internal.h.

◆ FF_INLINK_IDX

#define FF_INLINK_IDX ( link ) ((int)((link)->dstpad - (link)->dst->input_pads))

Find the index of a link.

I.e. find i such that link == ctx->(in|out)puts[i]

Definition at line 333 of file internal.h.

◆ FF_OUTLINK_IDX

#define FF_OUTLINK_IDX ( link ) ((int)((link)->srcpad - (link)->src->output_pads))

Definition at line 334 of file internal.h.

◆ FF_FILTER_FLAG_HWFRAME_AWARE

#define FF_FILTER_FLAG_HWFRAME_AWARE (1 << 0)

The filter is aware of hardware frames, and any hardware frame context should not be automatically propagated through it.

Definition at line 370 of file internal.h.

Enumeration Type Documentation

◆ FilterFormatsState

enum FilterFormatsState

Enumerator
FF_FILTER_FORMATS_PASSTHROUGH	The default value meaning that this filter supports all formats and (for audio) sample rates and channel layouts/counts as long as these properties agree for all inputs and outputs. This state is only allowed in case all inputs and outputs actually have the same type. The union is unused in this state. This value must always be zero (for default static initialization).
FF_FILTER_FORMATS_QUERY_FUNC	formats.query active.
FF_FILTER_FORMATS_PIXFMT_LIST	formats.pixels_list active.
FF_FILTER_FORMATS_SAMPLEFMTS_LIST	formats.samples_list active.
FF_FILTER_FORMATS_SINGLE_PIXFMT	formats.pix_fmt active
FF_FILTER_FORMATS_SINGLE_SAMPLEFMT	formats.sample_fmt active.

Definition at line 148 of file internal.h.

Function Documentation

◆ ff_avfilter_graph_update_heap()

void ff_avfilter_graph_update_heap	(	AVFilterGraph *	graph,
		AVFilterLink *	link
	)

Update the position of a link in the age heap.

Definition at line 1288 of file avfiltergraph.c.

Referenced by ff_update_link_current_pts().

◆ ff_filter_execute()

static av_always_inline int ff_filter_execute	(	AVFilterContext *	ctx,
		avfilter_action_func *	func,
		void *	arg,
		int *	ret,
		int	nb_jobs
	)

static

◆ ff_fmt_is_in()

int ff_fmt_is_in	(	int	fmt,
		const int *	fmts
	)

Tell if an integer is contained in the provided -1-terminated list of integers.

This is useful for determining (for instance) if an AVPixelFormat is in an array of supported formats.

Parameters

fmt	provided format
fmts	-1-terminated list of formats

Returns: 1 if present, 0 if absent

Definition at line 351 of file formats.c.

Referenced by config_input(), config_input_main(), config_input_overlay(), config_out_props(), and config_props().

◆ ff_parse_pixel_format()

av_warn_unused_result int ff_parse_pixel_format	(	enum AVPixelFormat *	ret,
		const char *	arg,
		void *	log_ctx
	)

Parse a pixel format.

Parameters

ret	pixel format pointer to where the value should be written
arg	string to parse
log_ctx	log context

Returns: >= 0 in case of success, a negative AVERROR code on error

Definition at line 812 of file formats.c.

Referenced by init().

◆ ff_parse_sample_rate()

av_warn_unused_result int ff_parse_sample_rate	(	int *	ret,
		const char *	arg,
		void *	log_ctx
	)

Parse a sample rate.

Parameters

ret	unsigned integer pointer to where the value should be written
arg	string to parse
log_ctx	log context

Returns: >= 0 in case of success, a negative AVERROR code on error

Definition at line 827 of file formats.c.

Referenced by init().

◆ ff_parse_channel_layout()

av_warn_unused_result int ff_parse_channel_layout	(	AVChannelLayout *	ret,
		int *	nret,
		const char *	arg,
		void *	log_ctx
	)

Parse a channel layout or a corresponding integer representation.

Parameters

ret	64bit integer pointer to where the value should be written.
nret	integer pointer to the number of channels; if not NULL, then unknown channel layouts are accepted
arg	string to parse
log_ctx	log context

Returns: >= 0 in case of success, a negative AVERROR code on error

Definition at line 839 of file formats.c.

Referenced by init(), and main().

◆ ff_update_link_current_pts()

void ff_update_link_current_pts	(	AVFilterLink *	link,
		int64_t	pts
	)

Definition at line 521 of file avfilter.c.

Referenced by consume_update(), ff_avfilter_link_set_out_status(), and ff_inlink_acknowledge_status().

◆ ff_avfilter_link_set_in_status()

void ff_avfilter_link_set_in_status	(	AVFilterLink *	link,
		int	status,
		int64_t	pts
	)

Set the status field of a link from the source filter.

The pts should reflect the timestamp of the status change, in link time base and relative to the frames timeline. In particular, for AVERROR_EOF, it should reflect the end time of the last frame.

Definition at line 209 of file avfilter.c.

Referenced by av_buffersrc_close(), ff_outlink_set_status(), and ff_request_frame_to_filter().

◆ ff_avfilter_link_set_out_status()

void ff_avfilter_link_set_out_status	(	AVFilterLink *	link,
		int	status,
		int64_t	pts
	)

Set the status field of a link from the destination filter.

The pts should probably be left unset (AV_NOPTS_VALUE).

Definition at line 222 of file avfilter.c.

Referenced by ff_filter_frame_to_filter(), ff_inlink_set_status(), ff_request_frame(), and forward_status_change().

◆ ff_command_queue_pop()

void ff_command_queue_pop ( AVFilterContext * filter )

Definition at line 73 of file avfilter.c.

Referenced by avfilter_free(), and ff_inlink_process_commands().

◆ ff_get_ref_perms_string()

char* ff_get_ref_perms_string	(	char *	buf,
		size_t	buf_size,
		int	perms
	)

◆ ff_tlog_link()

void ff_tlog_link	(	void *	ctx,
		AVFilterLink *	link,
		int	end
	)

Definition at line 376 of file avfilter.c.

Referenced by ff_filter_frame(), ff_get_video_buffer(), ff_request_frame(), and ff_request_frame_to_filter().

◆ ff_append_inpad()

int ff_append_inpad	(	AVFilterContext *	f,
		AVFilterPad *	p
	)

Append a new input/output pad to the filter's list of such pads.

The *_free_name versions will set the AVFILTERPAD_FLAG_FREE_NAME flag ensuring that the name will be freed generically (even on insertion error).

Definition at line 118 of file avfilter.c.

Referenced by decimate_init(), ff_append_inpad_free_name(), fieldmatch_init(), and init().

◆ ff_append_outpad()

int ff_append_outpad	(	AVFilterContext *	f,
		AVFilterPad *	p
	)

Definition at line 129 of file avfilter.c.

Referenced by ff_append_outpad_free_name(), and init().

◆ ff_append_inpad_free_name()

int ff_append_inpad_free_name	(	AVFilterContext *	f,
		AVFilterPad *	p
	)

Definition at line 123 of file avfilter.c.

Referenced by init(), join_init(), parse_definition(), and program_opencl_init().

◆ ff_append_outpad_free_name()

int ff_append_outpad_free_name	(	AVFilterContext *	f,
		AVFilterPad *	p
	)

Definition at line 134 of file avfilter.c.

Referenced by init(), movie_common_init(), parse_definition(), and split_init().

◆ ff_request_frame()

int ff_request_frame ( AVFilterLink * link )

Request an input frame from the filter at the other end of the link.

This function must not be used by filters using the activate callback, use ff_link_set_frame_wanted() instead.

The input filter may pass the request on to its inputs, fulfill the request from an internal buffer or any other means specific to its function.

When the end of a stream is reached AVERROR_EOF is returned and no further frames are returned after that.

When a filter is unable to output a frame for example due to its sources being unable to do so or because it depends on external means pushing data into it then AVERROR(EAGAIN) is returned. It is important that a AVERROR(EAGAIN) return is returned all the way to the caller (generally eventually a user application) as this step may (but does not have to be) necessary to provide the input with the next frame.

If a request is successful then some progress has been made towards providing a frame on the link (through ff_filter_frame()). A filter that needs several frames to produce one is allowed to return success if one more frame has been processed but no output has been produced yet. A filter is also allowed to simply forward a success return value.

Parameters

link	the input link

Returns: zero on success AVERROR_EOF on end of file AVERROR(EAGAIN) if the previous filter cannot output a frame currently and can neither guarantee that EOF has been reached.

Definition at line 400 of file avfilter.c.

Referenced by avfilter_graph_request_oldest(), deint_vaapi_request_frame(), ff_request_frame_to_filter(), ff_yadif_request_frame(), qsvdeint_request_frame(), request_frame(), and request_frame_ref().

◆ ff_filter_frame()

int ff_filter_frame	(	AVFilterLink *	link,
		AVFrame *	frame
	)

Send a frame of data to the next filter.

Parameters

link	the output link over which the data is being sent
frame	a reference to the buffer of data being sent. The receiving filter will free this reference when it no longer needs it or pass it on to the next filter.

Returns: >= 0 on success, a negative AVERROR on error. The receiving filter is responsible for unreferencing frame in case of error.

Definition at line 999 of file avfilter.c.

Referenced by activate(), addroi_filter_frame(), apply_filter(), audio_frame(), av_buffersrc_add_frame_flags(), avgblur_opencl_filter_frame(), avgblur_vulkan_filter_frame(), blend_frame(), blend_frame_for_dualinput(), blockdetect_filter_frame(), blur_frame(), blurdetect_filter_frame(), channelmap_filter_frame(), chromaber_vulkan_filter_frame(), compand_delay(), compand_drain(), compand_nodelay(), convolution_opencl_filter_frame(), create_frame(), cudachromakey_filter_frame(), cudascale_filter_frame(), cudaupload_filter_frame(), default_filter_frame(), deint_vaapi_filter_frame(), dnn_classify_activate(), dnn_classify_flush_frame(), dnn_detect_activate(), dnn_detect_flush_frame(), do_alphamerge(), do_blend(), do_convolve(), do_identity(), do_morpho(), do_psnr(), do_ssim(), do_vmaf(), draw_spatial(), end_last_frame(), extract_plane(), ff_qsvvpp_create(), ff_yadif_filter_frame(), filter(), filter_callback(), filter_frame(), filter_frame16(), filter_frame8(), filter_frame_ref(), fir_frame(), flip_bayer(), flush(), flush_frame(), gblur_vulkan_filter_frame(), geq_filter_frame(), get_frame(), headphone_frame(), hwdownload_filter_frame(), hwmap_filter_frame(), hwupload_filter_frame(), iccdetect_filter_frame(), iccgen_filter_frame(), load_apply_palette(), misc_vaapi_filter_frame(), movie_push_frame(), neighbor_opencl_filter_frame(), nlmeans_opencl_filter_frame(), nppscale_filter_frame(), nppscale_filter_frame_ref(), nppsharpen_filter_frame(), npptranspose_filter_frame(), oscilloscope_filter_frame(), output_frame(), output_single_frame(), overlay_cuda_blend(), overlay_opencl_blend(), overlay_vaapi_blend(), overlay_vulkan_blend(), pixscope_filter_frame(), plot_freqs(), plot_spectrum_column(), pp_filter_frame(), procamp_vaapi_filter_frame(), process_frame(), program_opencl_run(), push_frame(), push_samples(), qsvscale_filter_frame(), remap_opencl_process_frame(), request_frame(), return_frame(), scale_vaapi_filter_frame(), scale_vulkan_filter_frame(), send_silence(), shuffleplanes_filter_frame(), sierpinski_request_frame(), source_request_frame(), tonemap_opencl_filter_frame(), tonemap_vaapi_filter_frame(), transpose_opencl_filter_frame(), transpose_vaapi_filter_frame(), try_push_frame(), unsharp_opencl_filter_frame(), varblur_frame(), video_frame(), write_frame(), xfade_activate(), xfade_frame(), and xfade_opencl_activate().

◆ ff_filter_alloc()

AVFilterContext* ff_filter_alloc	(	const AVFilter *	filter,
		const char *	inst_name
	)

Allocate a new filter context and return it.

Parameters

filter	what filter to create an instance of
inst_name	name to give to the new filter context

Returns: newly created filter context or NULL on failure

Definition at line 642 of file avfilter.c.

Referenced by avfilter_graph_alloc_filter().

◆ ff_filter_activate()

int ff_filter_activate ( AVFilterContext * filter )

Definition at line 1333 of file avfilter.c.

Referenced by ff_filter_graph_run_once().

◆ ff_filter_graph_remove_filter()

void ff_filter_graph_remove_filter	(	AVFilterGraph *	graph,
		AVFilterContext *	filter
	)

Remove a filter from a graph;.

Definition at line 101 of file avfiltergraph.c.

Referenced by avfilter_free().

◆ ff_filter_graph_run_once()

int ff_filter_graph_run_once ( AVFilterGraph * graph )

Run one round of processing on a filter graph.

Definition at line 1339 of file avfiltergraph.c.

Referenced by avfilter_graph_request_oldest(), get_frame_internal(), and push_frame().

◆ ff_filter_get_nb_threads()

int ff_filter_get_nb_threads ( AVFilterContext * ctx )

Get number of threads for current filter instance.

This number is always same or less than graph->nb_threads.

Definition at line 783 of file avfilter.c.

Referenced by activate(), apply_lut(), blend_frame(), blend_frames(), blur_frame(), config_input(), config_input_ref(), config_output(), config_props(), convert_frame(), do_blend(), do_convolve(), draw_sierpinski(), filter(), filter_frame(), filter_frame16(), filter_frame8(), fir_frame(), gaussianiir2d(), geq_filter_frame(), nlmeans_plane(), open_stream(), output_frame(), param_init(), prepare_impulse(), prepare_secondary(), process_frame(), scroll(), and xfade_frame().

◆ ff_filter_process_command()

int ff_filter_process_command	(	AVFilterContext *	ctx,
		const char *	cmd,
		const char *	arg,
		char *	res,
		int	res_len,
		int	flags
	)

Generic processing of user supplied commands that are set in the same way as the filter options.

NOTE: 'enable' option is handled separately, and not by this function.

Definition at line 863 of file avfilter.c.

Referenced by oscilloscope_process_command(), pixscope_process_command(), and process_command().

◆ ff_filter_init_hw_frames()

int ff_filter_init_hw_frames	(	AVFilterContext *	avctx,
		AVFilterLink *	link,
		int	default_pool_size
	)

Perform any additional setup required for hardware frames.

link->hw_frames_ctx must be set before calling this function. Inside link->hw_frames_ctx, the fields format, sw_format, width and height must be set. If dynamically allocated pools are not supported, then initial_pool_size must also be set, to the minimum hardware frame pool size necessary for the filter to work (taking into account any frames which need to stored for use in operations as appropriate). If default_pool_size is nonzero, then it will be used as the pool size if no other modification takes place (this can be used to preserve compatibility).

Definition at line 1552 of file avfilter.c.

Referenced by config_output(), ff_vaapi_vpp_config_output(), and init_out_pool().

Data Structures

Macros

Enumerations

Functions

Detailed Description

Macro Definition Documentation

◆ AVFILTERPAD_FLAG_NEEDS_WRITABLE

◆ AVFILTERPAD_FLAG_FREE_NAME

◆ FILTER_QUERY_FUNC

◆ FILTER_PIXFMTS_ARRAY

◆ FILTER_SAMPLEFMTS_ARRAY

◆ FILTER_PIXFMTS

◆ FILTER_SAMPLEFMTS

◆ FILTER_SINGLE_PIXFMT

◆ FILTER_SINGLE_SAMPLEFMT

◆ FILTER_INOUTPADS

◆ FILTER_INPUTS

◆ FILTER_OUTPUTS

◆ D2TS

◆ TS2D

◆ TS2T

◆ FF_TPRINTF_START

◆ AVFILTER_DEFINE_CLASS_EXT

◆ AVFILTER_DEFINE_CLASS

◆ FF_INLINK_IDX

◆ FF_OUTLINK_IDX

◆ FF_FILTER_FLAG_HWFRAME_AWARE

Enumeration Type Documentation

◆ FilterFormatsState

Function Documentation

◆ ff_avfilter_graph_update_heap()

◆ ff_filter_execute()

◆ ff_fmt_is_in()

◆ ff_parse_pixel_format()

◆ ff_parse_sample_rate()

◆ ff_parse_channel_layout()

◆ ff_update_link_current_pts()

◆ ff_avfilter_link_set_in_status()

◆ ff_avfilter_link_set_out_status()

◆ ff_command_queue_pop()

◆ ff_get_ref_perms_string()

◆ ff_tlog_link()

◆ ff_append_inpad()

◆ ff_append_outpad()

◆ ff_append_inpad_free_name()

◆ ff_append_outpad_free_name()

◆ ff_request_frame()

◆ ff_filter_frame()

◆ ff_filter_alloc()

◆ ff_filter_activate()

◆ ff_filter_graph_remove_filter()

◆ ff_filter_graph_run_once()

◆ ff_filter_get_nb_threads()

◆ ff_filter_process_command()

◆ ff_filter_init_hw_frames()