libavfilter/internal.h File Reference

internal API functions More...

#include "avfilter.h"
#include "avfiltergraph.h"
#include "formats.h"
#include "video.h"

Go to the source code of this file.

Data Structures

struct AVFilterPool

struct AVFilterCommand

Defines

#define POOL_SIZE   32

#define ff_tlog(pctx,...)   do { if (0) av_log(pctx, AV_LOG_DEBUG, __VA_ARGS__); } while (0)

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

#define AVFILTER_DEFINE_CLASS(fname)

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

Find the index of a link.

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

Functions

void ff_avfilter_graph_update_heap (AVFilterGraph *graph, AVFilterLink *link)

Update the position of a link in the age heap.

void ff_avfilter_default_free_buffer (AVFilterBuffer *buf)

default handler for freeing audio/video buffer when there are no references left

int ff_fmt_is_in (int fmt, const int *fmts)

Tell is a format is contained in the provided list terminated by -1.

int * ff_copy_int_list (const int *const list)

Return a copy of a list of integers terminated by -1, or NULL in case of copy failure.

int64_t * ff_copy_int64_list (const int64_t *const list)

Return a copy of a list of 64-bit integers, or NULL in case of copy failure.

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

Parse a pixel format.

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

Parse a sample rate.

int ff_parse_time_base (AVRational *ret, const char *arg, void *log_ctx)

Parse a time base.

int ff_parse_sample_format (int *ret, const char *arg, void *log_ctx)

Parse a sample format name or a corresponding integer representation.

int ff_parse_channel_layout (int64_t *ret, const char *arg, void *log_ctx)

Parse a channel layout or a corresponding integer representation.

void ff_update_link_current_pts (AVFilterLink *link, int64_t pts)

void ff_free_pool (AVFilterPool *pool)

void ff_command_queue_pop (AVFilterContext *filter)

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

void ff_tlog_ref (void *ctx, AVFilterBufferRef *ref, int end)

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

void ff_insert_pad (unsigned idx, unsigned *count, size_t padidx_off, AVFilterPad **pads, AVFilterLink ***links, AVFilterPad *newpad)

Insert a new pad.

static void ff_insert_inpad (AVFilterContext *f, unsigned index, AVFilterPad *p)

Insert a new input pad for the filter.

static void ff_insert_outpad (AVFilterContext *f, unsigned index, AVFilterPad *p)

Insert a new output pad for the filter.

int ff_poll_frame (AVFilterLink *link)

Poll a frame from the filter chain.

int ff_request_frame (AVFilterLink *link)

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

AVFilterBufferRef * ff_copy_buffer_ref (AVFilterLink *outlink, AVFilterBufferRef *ref)

int ff_buffersink_read_compat (AVFilterContext *ctx, AVFilterBufferRef **buf)

int ff_buffersink_read_samples_compat (AVFilterContext *ctx, AVFilterBufferRef **pbuf, int nb_samples)

Detailed Description

internal API functions

Definition in file internal.h.

Define Documentation

#define AVFILTER_DEFINE_CLASS ( fname )

Value:

static const AVClass fname##_class = {      \
        .class_name = #fname,                   \
        .item_name  = av_default_item_name,     \
        .option     = fname##_options,          \
        .version    = LIBAVUTIL_VERSION_INT,    \
        .category   = AV_CLASS_CATEGORY_FILTER, \
    }

Definition at line 348 of file internal.h.

#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 365 of file internal.h.

Referenced by get_audio_buffer(), get_video_buffer(), and process_frame().

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

Definition at line 366 of file internal.h.

Referenced by config_output(), movie_config_output_props(), movie_request_frame(), and request_frame().

#define ff_tlog	(	pctx,
		...		)	do { if (0) av_log(pctx, AV_LOG_DEBUG, __VA_ARGS__); } while (0)

Definition at line 281 of file internal.h.

Referenced by ff_draw_slice(), ff_get_video_buffer(), ff_start_frame(), ff_tlog_link(), and ff_tlog_ref().

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

Definition at line 284 of file internal.h.

Referenced by ff_draw_slice(), ff_filter_samples_framed(), ff_get_video_buffer(), ff_request_frame(), and ff_start_frame().

#define POOL_SIZE 32

Definition at line 32 of file internal.h.

Referenced by ff_default_get_video_buffer(), ff_free_pool(), and store_in_pool().

Function Documentation

void ff_avfilter_default_free_buffer ( AVFilterBuffer * buf )

default handler for freeing audio/video buffer when there are no references left

Definition at line 34 of file buffer.c.

Referenced by avfilter_get_audio_buffer_ref_from_arrays(), and avfilter_get_video_buffer_ref_from_arrays().

void ff_avfilter_graph_update_heap	(	AVFilterGraph *	graph,
		AVFilterLink *	link
	)

Update the position of a link in the age heap.

Definition at line 1038 of file avfiltergraph.c.

Referenced by ff_update_link_current_pts().

int ff_buffersink_read_compat	(	AVFilterContext *	ctx,
		AVFilterBufferRef **	buf
	)

Definition at line 62 of file buffersink.c.

Referenced by av_buffersink_read().

int ff_buffersink_read_samples_compat	(	AVFilterContext *	ctx,
		AVFilterBufferRef **	pbuf,
		int	nb_samples
	)

Definition at line 103 of file buffersink.c.

Referenced by av_buffersink_read_samples().

void ff_command_queue_pop ( AVFilterContext * filter )

Definition at line 90 of file avfilter.c.

Referenced by avfilter_free(), and ff_start_frame().

AVFilterBufferRef* ff_copy_buffer_ref	(	AVFilterLink *	outlink,
		AVFilterBufferRef *	ref
	)

Definition at line 202 of file buffer.c.

Referenced by av_buffersrc_add_ref(), and frame_to_buf().

int64_t* ff_copy_int64_list ( const int64_t *const list )

Return a copy of a list of 64-bit integers, or NULL in case of copy failure.

Definition at line 193 of file formats.c.

Referenced by asink_init().

int* ff_copy_int_list ( const int *const list )

Return a copy of a list of integers terminated by -1, or NULL in case of copy failure.

Definition at line 186 of file formats.c.

Referenced by asink_init(), and vsink_init().

int ff_fmt_is_in	(	int	fmt,
		const int *	fmts
	)

Tell is a format is contained in the provided list terminated by -1.

Definition at line 163 of file formats.c.

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

void ff_free_pool ( AVFilterPool * pool )

Definition at line 91 of file buffer.c.

Referenced by avfilter_link_free(), and store_in_pool().

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

Definition at line 34 of file avfilter.c.

Referenced by ff_get_video_buffer(), and ff_tlog_ref().

static void ff_insert_inpad	(	AVFilterContext *	f,
		unsigned	index,
		AVFilterPad *	p
	)			`[inline, static]`

Insert a new input pad for the filter.

Definition at line 310 of file internal.h.

Referenced by init(), and join_init().

static void ff_insert_outpad	(	AVFilterContext *	f,
		unsigned	index,
		AVFilterPad *	p
	)			`[inline, static]`

Insert a new output pad for the filter.

Definition at line 321 of file internal.h.

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

void ff_insert_pad	(	unsigned	idx,
		unsigned *	count,
		size_t	padidx_off,
		AVFilterPad **	pads,
		AVFilterLink ***	links,
		AVFilterPad *	newpad
	)

Insert a new pad.

Parameters:

	idx	Insertion point. Pad is inserted at the end if this point is beyond the end of the list of pads.
	count	Pointer to the number of pads in the list
	padidx_off	Offset within an AVFilterLink structure to the element to increment when inserting a new pad causes link numbering to change
	pads	Pointer to the pointer to the beginning of the list of pads
	links	Pointer to the pointer to the beginning of the list of links
	newpad	The new pad to add. A copy is made when adding.

Definition at line 99 of file avfilter.c.

Referenced by ff_insert_inpad(), and ff_insert_outpad().

int ff_parse_channel_layout	(	int64_t *	ret,
		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.
	arg	string to parse
	log_ctx	log context

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

Definition at line 514 of file formats.c.

Referenced by init().

int ff_parse_pixel_format	(	enum PixelFormat *	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 461 of file formats.c.

Referenced by init(), and init_video().

int ff_parse_sample_format	(	int *	ret,
		const char *	arg,
		void *	log_ctx
	)

Parse a sample format name or a corresponding integer representation.

Parameters:

	ret	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 476 of file formats.c.

Referenced by init().

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 502 of file formats.c.

Referenced by init().

int ff_parse_time_base	(	AVRational *	ret,
		const char *	arg,
		void *	log_ctx
	)

Parse a time base.

Parameters:

	ret	unsigned AVRational 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 491 of file formats.c.

int ff_poll_frame ( AVFilterLink * link )

Poll a frame from the filter chain.

Parameters:

link

the input link

Returns:: the number of immediately available frames, a negative number in case of error

Definition at line 354 of file avfilter.c.

Referenced by av_buffersink_poll_frame(), ff_buffersink_read_compat(), ff_poll_frame(), and poll_frame().

int ff_request_frame ( AVFilterLink * link )

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

Parameters:

link

the input link

Returns:: zero on success

Definition at line 332 of file avfilter.c.

Referenced by av_buffersink_get_buffer_ref(), avfilter_graph_request_oldest(), ff_buffersink_read_compat(), ff_request_frame(), join_request_frame(), poll_frame(), request_frame(), request_samples(), and return_audio_frame().

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

Definition at line 308 of file avfilter.c.

Referenced by ff_draw_slice(), ff_filter_samples_framed(), ff_get_video_buffer(), ff_request_frame(), and ff_start_frame().

void ff_tlog_ref	(	void *	ctx,
		AVFilterBufferRef *	ref,
		int	end
	)

Definition at line 46 of file avfilter.c.

Referenced by ff_get_video_buffer(), and ff_start_frame().

void ff_update_link_current_pts	(	AVFilterLink *	link,
		int64_t	pts
	)

Definition at line 372 of file avfilter.c.

Referenced by ff_filter_samples_framed(), and ff_start_frame().


Data Structures
struct	AVFilterPool
struct	AVFilterCommand
Defines
#define	POOL_SIZE 32
#define	ff_tlog(pctx,...) do { if (0) av_log(pctx, AV_LOG_DEBUG, __VA_ARGS__); } while (0)
#define	FF_TPRINTF_START(ctx, func) ff_tlog(NULL, "%-16s: ", #func)
#define	AVFILTER_DEFINE_CLASS(fname)
#define	FF_INLINK_IDX(link) ((int)((link)->dstpad - (link)->dst->input_pads))
	Find the index of a link.
#define	FF_OUTLINK_IDX(link) ((int)((link)->srcpad - (link)->src->output_pads))
Functions
void	ff_avfilter_graph_update_heap (AVFilterGraph graph, AVFilterLink link)
	Update the position of a link in the age heap.
void	ff_avfilter_default_free_buffer (AVFilterBuffer *buf)
	default handler for freeing audio/video buffer when there are no references left
int	ff_fmt_is_in (int fmt, const int *fmts)
	Tell is a format is contained in the provided list terminated by -1.
int *	ff_copy_int_list (const int *const list)
	Return a copy of a list of integers terminated by -1, or NULL in case of copy failure.
int64_t *	ff_copy_int64_list (const int64_t *const list)
	Return a copy of a list of 64-bit integers, or NULL in case of copy failure.
int	ff_parse_pixel_format (enum PixelFormat ret, const char arg, void *log_ctx)
	Parse a pixel format.
int	ff_parse_sample_rate (int ret, const char arg, void *log_ctx)
	Parse a sample rate.
int	ff_parse_time_base (AVRational ret, const char arg, void *log_ctx)
	Parse a time base.
int	ff_parse_sample_format (int ret, const char arg, void *log_ctx)
	Parse a sample format name or a corresponding integer representation.
int	ff_parse_channel_layout (int64_t ret, const char arg, void *log_ctx)
	Parse a channel layout or a corresponding integer representation.
void	ff_update_link_current_pts (AVFilterLink *link, int64_t pts)
void	ff_free_pool (AVFilterPool *pool)
void	ff_command_queue_pop (AVFilterContext *filter)
char *	ff_get_ref_perms_string (char *buf, size_t buf_size, int perms)
void	ff_tlog_ref (void ctx, AVFilterBufferRef ref, int end)
void	ff_tlog_link (void ctx, AVFilterLink link, int end)
void	ff_insert_pad (unsigned idx, unsigned count, size_t padidx_off, AVFilterPad pads, AVFilterLink *links, AVFilterPad newpad)
	Insert a new pad.
static void	ff_insert_inpad (AVFilterContext f, unsigned index, AVFilterPad p)
	Insert a new input pad for the filter.
static void	ff_insert_outpad (AVFilterContext f, unsigned index, AVFilterPad p)
	Insert a new output pad for the filter.
int	ff_poll_frame (AVFilterLink *link)
	Poll a frame from the filter chain.
int	ff_request_frame (AVFilterLink *link)
	Request an input frame from the filter at the other end of the link.
AVFilterBufferRef *	ff_copy_buffer_ref (AVFilterLink outlink, AVFilterBufferRef ref)
int	ff_buffersink_read_compat (AVFilterContext ctx, AVFilterBufferRef *buf)
int	ff_buffersink_read_samples_compat (AVFilterContext ctx, AVFilterBufferRef *pbuf, int nb_samples)