#include "avfilter.h"

Data Structures
struct	AVFilterFormats
	A list of supported formats for one end of a filter link. More...

struct	AVFilterChannelLayouts
	A list of supported channel layouts. More...

Macros
#define	FF_COUNT2LAYOUT(c) (0x8000000000000000ULL \| (c))
	Encode a channel count as a channel layout. More...

#define	FF_LAYOUT2COUNT(l)
	Decode a channel count encoded as a channel layout. More...

Functions
AVFilterChannelLayouts *	ff_merge_channel_layouts (AVFilterChannelLayouts a, AVFilterChannelLayouts b)
	Return a channel layouts/samplerates list which contains the intersection of the layouts/samplerates of a and b. More...

AVFilterFormats *	ff_merge_samplerates (AVFilterFormats a, AVFilterFormats b)

AVFilterChannelLayouts *	ff_all_channel_layouts (void)
	Construct an empty AVFilterChannelLayouts/AVFilterFormats struct – representing any channel layout (with known disposition)/sample rate. More...

AVFilterFormats *	ff_all_samplerates (void)

AVFilterChannelLayouts *	ff_all_channel_counts (void)
	Construct an AVFilterChannelLayouts coding for any channel layout, with known or unknown disposition. More...

AVFilterChannelLayouts *	avfilter_make_format64_list (const int64_t *fmts)

int	ff_set_common_channel_layouts (AVFilterContext ctx, AVFilterChannelLayouts layouts)
	A helper for query_formats() which sets all links to the same list of channel layouts/sample rates. More...

int	ff_set_common_samplerates (AVFilterContext ctx, AVFilterFormats samplerates)

int	ff_set_common_formats (AVFilterContext ctx, AVFilterFormats formats)
	A helper for query_formats() which sets all links to the same list of formats. More...

int	ff_add_channel_layout (AVFilterChannelLayouts **l, uint64_t channel_layout)

int	ff_channel_layouts_ref (AVFilterChannelLayouts f, AVFilterChannelLayouts *ref)
	Add *ref as a new reference to f. More...

void	ff_channel_layouts_unref (AVFilterChannelLayouts **ref)
	Remove a reference to a channel layouts list. More...

void	ff_channel_layouts_changeref (AVFilterChannelLayouts oldref, AVFilterChannelLayouts newref)

int	ff_default_query_formats (AVFilterContext *ctx)

int	ff_query_formats_all (AVFilterContext *ctx)
	Set the formats list to all existing formats. More...

AVFilterFormats *	ff_make_format_list (const int *fmts)
	Create a list of supported formats. More...

int	ff_add_format (AVFilterFormats **avff, int64_t fmt)
	Add fmt to the list of media formats contained in *avff. More...

AVFilterFormats *	ff_all_formats (enum AVMediaType type)
	Return a list of all formats supported by FFmpeg for the given media type. More...

AVFilterFormats *	ff_planar_sample_fmts (void)
	Construct a formats list containing all planar sample formats. More...

AVFilterFormats *	ff_merge_formats (AVFilterFormats a, AVFilterFormats b, enum AVMediaType type)
	Return a format list which contains the intersection of the formats of a and b. More...

int	ff_formats_ref (AVFilterFormats formats, AVFilterFormats *ref)
	Add *ref as a new reference to formats. More...

void	ff_formats_unref (AVFilterFormats **ref)
	If ref is non-NULL, remove ref as a reference to the format list it currently points to, deallocates that list if this was the last reference, and sets *ref to NULL. More...

void	ff_formats_changeref (AVFilterFormats oldref, AVFilterFormats newref)
	Before After \|formats \|<------—. More...

Macro Definition Documentation

#define FF_COUNT2LAYOUT ( c ) (0x8000000000000000ULL | (c))

Encode a channel count as a channel layout.

FF_COUNT2LAYOUT(c) means any channel layout with c channels, with a known or unknown disposition. The result is only valid inside AVFilterChannelLayouts and immediately related functions.

Definition at line 102 of file formats.h.

Referenced by aeval_query_formats(), asink_query_formats(), ff_merge_channel_layouts(), and query_formats().

#define FF_LAYOUT2COUNT ( l )

Value:

(((l) & 0x8000000000000000ULL) ? \

(int)((l) & 0x7FFFFFFF) : 0)

Decode a channel count encoded as a channel layout.

Return 0 if the channel layout was a real one.

Definition at line 108 of file formats.h.

Referenced by pick_format(), reduce_formats_on_filter(), and swap_channel_layouts_on_filter().

Function Documentation

AVFilterChannelLayouts* ff_merge_channel_layouts	(	AVFilterChannelLayouts *	a,
		AVFilterChannelLayouts *	b
	)

Return a channel layouts/samplerates list which contains the intersection of the layouts/samplerates of a and b.

Also, all the references of a, all the references of b, and a and b themselves will be deallocated.

If a and b do not share any common elements, neither is modified, and NULL is returned.

Definition at line 166 of file formats.c.

Referenced by query_formats().

AVFilterFormats* ff_merge_samplerates	(	AVFilterFormats *	a,
		AVFilterFormats *	b
	)

Definition at line 139 of file formats.c.

Referenced by can_merge_formats(), and query_formats().

AVFilterChannelLayouts* ff_all_channel_layouts ( void )

Construct an empty AVFilterChannelLayouts/AVFilterFormats struct – representing any channel layout (with known disposition)/sample rate.

Definition at line 385 of file formats.c.

Referenced by channelmap_query_formats(), ff_default_query_formats(), filter_query_formats(), join_query_formats(), and query_formats().

AVFilterFormats* ff_all_samplerates ( void )

Definition at line 379 of file formats.c.

Referenced by aeval_query_formats(), channelmap_query_formats(), default_query_formats_common(), filter_query_formats(), join_query_formats(), and query_formats().

AVFilterChannelLayouts* ff_all_channel_counts ( void )

Construct an AVFilterChannelLayouts coding for any channel layout, with known or unknown disposition.

Definition at line 394 of file formats.c.

Referenced by aeval_query_formats(), asink_query_formats(), ff_query_formats_all(), and query_formats().

AVFilterChannelLayouts* avfilter_make_format64_list ( const int64_t * fmts )

Definition at line 292 of file formats.c.

Referenced by movie_query_formats(), and query_formats().

int ff_set_common_channel_layouts	(	AVFilterContext *	ctx,
		AVFilterChannelLayouts *	layouts
	)

A helper for query_formats() which sets all links to the same list of channel layouts/sample rates.

If there are no links hooked to this filter, the list is freed.

Definition at line 523 of file formats.c.

Referenced by aeval_query_formats(), asink_query_formats(), default_query_formats_common(), filter_query_formats(), and query_formats().

int ff_set_common_samplerates	(	AVFilterContext *	ctx,
		AVFilterFormats *	samplerates
	)

Definition at line 530 of file formats.c.

Referenced by aeval_query_formats(), asink_query_formats(), channelmap_query_formats(), default_query_formats_common(), filter_query_formats(), join_query_formats(), and query_formats().

int ff_set_common_formats	(	AVFilterContext *	ctx,
		AVFilterFormats *	formats
	)

A helper for query_formats() which sets all links to the same list of formats.

If there are no links hooked to this filter, the list of formats is freed.

Definition at line 542 of file formats.c.

Referenced by aeval_query_formats(), asink_query_formats(), channelmap_query_formats(), default_query_formats_common(), filter_query_formats(), geq_query_formats(), join_query_formats(), pp_query_formats(), query_formats(), and vsink_query_formats().

int ff_add_channel_layout	(	AVFilterChannelLayouts **	l,
		uint64_t	channel_layout
	)

Definition at line 329 of file formats.c.

Referenced by aeval_query_formats(), asink_query_formats(), channelmap_query_formats(), init(), join_query_formats(), query_formats(), and reduce_formats_on_filter().

int ff_channel_layouts_ref	(	AVFilterChannelLayouts *	f,
		AVFilterChannelLayouts **	ref
	)

Add *ref as a new reference to f.

Definition at line 417 of file formats.c.

Referenced by aeval_query_formats(), channelmap_query_formats(), ff_set_common_channel_layouts(), join_query_formats(), movie_query_formats(), and query_formats().

void ff_channel_layouts_unref ( AVFilterChannelLayouts ** ref )

Remove a reference to a channel layouts list.

Definition at line 463 of file formats.c.

Referenced by asink_query_formats(), free_link(), and pick_format().

void ff_channel_layouts_changeref	(	AVFilterChannelLayouts **	oldref,
		AVFilterChannelLayouts **	newref
	)

Definition at line 481 of file formats.c.

Referenced by avfilter_insert_filter().

int ff_default_query_formats ( AVFilterContext * ctx )

Definition at line 571 of file formats.c.

Referenced by main(), query_formats(), and vsink_query_formats().

int ff_query_formats_all ( AVFilterContext * ctx )

Set the formats list to all existing formats.

This function behaves like ff_default_query_formats(), except it also accepts channel layouts with unknown disposition. It should only be used with audio filters.

Definition at line 576 of file formats.c.

AVFilterFormats* ff_make_format_list ( const int * fmts )

Create a list of supported formats.

This is intended for use in AVFilter->query_formats().

Parameters

fmts	list of media formats, terminated by -1

Returns: the format list, with no existing references

Definition at line 283 of file formats.c.

Referenced by aeval_query_formats(), geq_query_formats(), movie_query_formats(), pp_query_formats(), and query_formats().

int ff_add_format	(	AVFilterFormats **	avff,
		int64_t	fmt
	)

Add fmt to the list of media formats contained in *avff.

If *avff is NULL the function allocates the filter formats struct and puts its pointer in *avff.

Returns: a non negative value in case of success, or a negative value corresponding to an AVERROR code in case of error

Definition at line 323 of file formats.c.

Referenced by asink_query_formats(), ff_all_formats(), ff_draw_supported_pixel_formats(), ff_planar_sample_fmts(), init(), query_formats(), reduce_formats_on_filter(), and vsink_query_formats().

AVFilterFormats* ff_all_formats ( enum AVMediaType type )

Return a list of all formats supported by FFmpeg for the given media type.

Definition at line 336 of file formats.c.

Referenced by default_query_formats_common(), filter_query_formats(), and query_formats().

AVFilterFormats* ff_planar_sample_fmts ( void )

Construct a formats list containing all planar sample formats.

Definition at line 367 of file formats.c.

Referenced by channelmap_query_formats(), join_query_formats(), and query_formats().

AVFilterFormats* ff_merge_formats	(	AVFilterFormats *	a,
		AVFilterFormats *	b,
		enum AVMediaType	type
	)

Return a format list which contains the intersection of the formats of a and b.

Also, all the references of a, all the references of b, and a and b themselves will be deallocated.

If a and b do not share any common formats, neither is modified, and NULL is returned.

Definition at line 92 of file formats.c.

Referenced by can_merge_formats(), and query_formats().

int ff_formats_ref	(	AVFilterFormats *	formats,
		AVFilterFormats **	ref
	)

Add *ref as a new reference to formats.

That is the pointers will point like in the ascii art below:

|formats |<-----—. | ____ | ____|___________________ | |refs| | | __|_ | |* * | | | | | | AVFilterLink | |* *------—>|*ref| | |____| | | |____| |________| |________________________

Definition at line 422 of file formats.c.

Referenced by ff_set_common_formats(), ff_set_common_samplerates(), movie_query_formats(), and query_formats().

void ff_formats_unref ( AVFilterFormats ** ref )

If *ref is non-NULL, remove *ref as a reference to the format list it currently points to, deallocates that list if this was the last reference, and sets *ref to NULL.

Before After ________ ________ NULL |formats |<-----—. |formats | ^ | ____ | ____|________________ | ____ | ____|________________ | |refs| | | __|_ | |refs| | | __|_ | |* * | | | | | | AVFilterLink | |* * | | | | | | AVFilterLink | |* *------—>|*ref| | |* | | | |*ref| | |____| | | |____| | |____| | | |____| |________| |_____________________ |________| |_____________________

Definition at line 458 of file formats.c.

Referenced by asink_query_formats(), free_link(), pick_format(), query_formats(), and vsink_query_formats().

void ff_formats_changeref	(	AVFilterFormats **	oldref,
		AVFilterFormats **	newref
	)

Before After

|formats |<------—.

|formats |<------—. | ____ | ___|___ | ____ | ___|___ | |refs| | | | | | |refs| | | | | NULL | |* *------—>|*oldref| | |* *------—>|*newref| ^ | |* * | | |_______| | |* * | | |_______| ___|___ | |____| | | |____| | | | | |________| |________| |*oldref| |_______|

Definition at line 487 of file formats.c.

Referenced by avfilter_insert_filter().

Data Structures

Macros

Functions

Macro Definition Documentation

Function Documentation