#include "libavutil/avassert.h"
#include "libavutil/channel_layout.h"
#include "libavutil/common.h"
#include "libavutil/eval.h"
#include "libavutil/pixdesc.h"
#include "libavutil/parseutils.h"
#include "avfilter.h"
#include "internal.h"
#include "formats.h"
#include "all_channel_layouts.inc"

Macros
#define	KNOWN(l) (!FF_LAYOUT2COUNT(l)) /* for readability */

#define	MERGE_REF(ret, a, fmts, type, fail)
	Add all refs from a to ret and destroy a. More...

#define	MERGE_FORMATS(ret, a, b, fmts, nb, type, fail)
	Add all formats common for a and b to ret, copy the refs and destroy a and b. More...

#define	MAKE_FORMAT_LIST(type, field, count_field)

#define	ADD_FORMAT(f, fmt, unref_fn, type, list, nb)

#define	FORMATS_REF(f, ref, unref_fn)

#define	FIND_REF_INDEX(ref, idx)

#define	FORMATS_UNREF(ref, list)

#define	FORMATS_CHANGEREF(oldref, newref)

#define	SET_COMMON_FORMATS(ctx, fmts, in_fmts, out_fmts, ref_fn, unref_fn, list)

Functions
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...

AVFilterFormats *	ff_merge_samplerates (AVFilterFormats a, AVFilterFormats b)

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...

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...

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

AVFilterChannelLayouts *	ff_make_formatu64_list (const uint64_t *fmts)

AVFilterChannelLayouts *	avfilter_make_format64_list (const int64_t *fmts)

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

int	ff_add_channel_layout (AVFilterChannelLayouts **l, uint64_t channel_layout)

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_all_samplerates (void)

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

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

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

int	ff_formats_ref (AVFilterFormats f, 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_channel_layouts_unref (AVFilterChannelLayouts **ref)
	Remove a reference to a channel layouts list. More...

void	ff_channel_layouts_changeref (AVFilterChannelLayouts oldref, AVFilterChannelLayouts newref)

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

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...

static int	default_query_formats_common (AVFilterContext ctx, AVFilterChannelLayouts (layouts)(void))

int	ff_default_query_formats (AVFilterContext *ctx)

int	ff_query_formats_all_layouts (AVFilterContext *ctx)
	Set the formats list to all known channel layouts. More...

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

int	ff_parse_sample_format (int ret, const char arg, void *log_ctx)
	Parse a sample format name or a corresponding integer representation. More...

int	ff_parse_time_base (AVRational ret, const char arg, void *log_ctx)
	Parse a time base. More...

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

int	ff_parse_channel_layout (int64_t ret, int nret, const char arg, void log_ctx)
	Parse a channel layout or a corresponding integer representation. More...

Variables
const int64_t	avfilter_all_channel_layouts []

Macro Definition Documentation

◆ KNOWN

#define KNOWN ( l ) (!FF_LAYOUT2COUNT(l)) /* for readability */

Definition at line 32 of file formats.c.

Referenced by ff_merge_channel_layouts().

◆ MERGE_REF

#define MERGE_REF	(	ret,
		a,
		fmts,
		type,
		fail
	)

Value:

do {                                                                       \
    type ***tmp;                                                           \
    int i;                                                                 \
                                                                           \
    if (!(tmp = av_realloc_array(ret->refs, ret->refcount + a->refcount,   \
                                 sizeof(*tmp))))                           \
        goto fail;                                                         \
    ret->refs = tmp;                                                       \
                                                                           \
    for (i = 0; i < a->refcount; i ++) {                                   \
        ret->refs[ret->refcount] = a->refs[i];                             \
        *ret->refs[ret->refcount++] = ret;                                 \
    }                                                                      \
                                                                           \
    av_freep(&a->refs);                                                    \
    av_freep(&a->fmts);                                                    \
    av_freep(&a);                                                          \
} while (0)

Add all refs from a to ret and destroy a.

Definition at line 37 of file formats.c.

Referenced by ff_merge_channel_layouts(), and ff_merge_samplerates().

◆ MERGE_FORMATS

#define MERGE_FORMATS	(	ret,
		a,
		b,
		fmts,
		nb,
		type,
		fail
	)

Value:

do {                                                                            \
    int i, j, k = 0, count = FFMIN(a->nb, b->nb);                               \
                                                                                \
    if (!(ret = av_mallocz(sizeof(*ret))))                                      \
        goto fail;                                                              \
                                                                                \
    if (count) {                                                                \
        if (!(ret->fmts = av_malloc_array(count, sizeof(*ret->fmts))))          \
            goto fail;                                                          \
        for (i = 0; i < a->nb; i++)                                             \
            for (j = 0; j < b->nb; j++)                                         \
                if (a->fmts[i] == b->fmts[j]) {                                 \
                    if(k >= FFMIN(a->nb, b->nb)){                               \
                        av_log(NULL, AV_LOG_ERROR, "Duplicate formats in %s detected\n", __FUNCTION__); \
                        av_free(ret->fmts);                                     \
                        av_free(ret);                                           \
                        return NULL;                                            \
                    }                                                           \
                    ret->fmts[k++] = a->fmts[i];                                \
                }                                                               \
    }                                                                           \
    ret->nb = k;                                                                \
    /* check that there was at least one common format */                       \
    if (!ret->nb)                                                               \
        goto fail;                                                              \
                                                                                \
    MERGE_REF(ret, a, fmts, type, fail);                                        \
    MERGE_REF(ret, b, fmts, type, fail);                                        \
} while (0)

Add all formats common for a and b to ret, copy the refs and destroy a and b.

Definition at line 61 of file formats.c.

Referenced by ff_merge_formats(), and ff_merge_samplerates().

◆ MAKE_FORMAT_LIST

#define MAKE_FORMAT_LIST	(	type,
		field,
		count_field
	)

Value:

type *formats;                                                      \
    int count = 0;                                                      \
    if (fmts)                                                           \
        for (count = 0; fmts[count] != -1; count++)                     \
            ;                                                           \
    formats = av_mallocz(sizeof(*formats));                             \
    if (!formats)                                                       \
        return NULL;                                                    \
    formats->count_field = count;                                       \
    if (count) {                                                        \
        formats->field = av_malloc_array(count, sizeof(*formats->field));      \
        if (!formats->field) {                                          \
            av_freep(&formats);                                         \
            return NULL;                                                \
        }                                                               \
    }

Definition at line 265 of file formats.c.

Referenced by avfilter_make_format64_list(), ff_make_format_list(), and ff_make_formatu64_list().

◆ ADD_FORMAT

#define ADD_FORMAT	(	f,
		fmt,
		unref_fn,
		type,
		list,
		nb
	)

Value:

do {                                                        \
    type *fmts;                                             \
    void *oldf = *f;                                        \
                                                            \
    if (!(*f) && !(*f = av_mallocz(sizeof(**f)))) {         \
        unref_fn(f);                                        \
        return AVERROR(ENOMEM);                             \
    }                                                       \
                                                            \
    fmts = av_realloc_array((*f)->list, (*f)->nb + 1,       \
                            sizeof(*(*f)->list));           \
    if (!fmts) {                                            \
        unref_fn(f);                                        \
        if (!oldf)                                          \
            av_freep(f);                                    \
        return AVERROR(ENOMEM);                             \
    }                                                       \
                                                            \
    (*f)->list = fmts;                                      \
    (*f)->list[(*f)->nb++] = fmt;                           \
} while (0)

Definition at line 314 of file formats.c.

Referenced by ff_add_channel_layout(), and ff_add_format().

◆ FORMATS_REF

#define FORMATS_REF	(	f,
		ref,
		unref_fn
	)

Value:

void *tmp;                                                                  \
                                                                                \
    if (!f || !ref)                                                             \
        return AVERROR(ENOMEM);                                                 \
                                                                                \
    tmp = av_realloc_array(f->refs, sizeof(*f->refs), f->refcount + 1);         \
    if (!tmp) {                                                                 \
        unref_fn(&f);                                                           \
        return AVERROR(ENOMEM);                                                 \
    }                                                                           \
    f->refs = tmp;                                                              \
    f->refs[f->refcount++] = ref;                                               \
    *ref = f;                                                                   \
    return 0

Definition at line 419 of file formats.c.

Referenced by ff_channel_layouts_ref(), and ff_formats_ref().

◆ FIND_REF_INDEX

#define FIND_REF_INDEX	(	ref,
		idx
	)

Value:

do {                                        \
    int i;                                  \
    for (i = 0; i < (*ref)->refcount; i ++) \
        if((*ref)->refs[i] == ref) {        \
            idx = i;                        \
            break;                          \
        }                                   \
} while (0)

Definition at line 445 of file formats.c.

◆ FORMATS_UNREF

#define FORMATS_UNREF	(	ref,
		list
	)

Value:

do {                                                               \
    int idx = -1;                                                  \
                                                                   \
    if (!*ref || !(*ref)->refs)                                    \
        return;                                                    \
                                                                   \
    FIND_REF_INDEX(ref, idx);                                      \
                                                                   \
    if (idx >= 0)                                                  \
        memmove((*ref)->refs + idx, (*ref)->refs + idx + 1,        \
            sizeof(*(*ref)->refs) * ((*ref)->refcount - idx - 1)); \
                                                                   \
    if(!--(*ref)->refcount) {                                      \
        av_free((*ref)->list);                                     \
        av_free((*ref)->refs);                                     \
        av_free(*ref);                                             \
    }                                                              \
    *ref = NULL;                                                   \
} while (0)

Definition at line 455 of file formats.c.

Referenced by ff_channel_layouts_unref(), and ff_formats_unref().

◆ FORMATS_CHANGEREF

#define FORMATS_CHANGEREF	(	oldref,
		newref
	)

Value:

do {                                            \
    int idx = -1;                               \
                                                \
    FIND_REF_INDEX(oldref, idx);                \
                                                \
    if (idx >= 0) {                             \
        (*oldref)->refs[idx] = newref;          \
        *newref = *oldref;                      \
        *oldref = NULL;                         \
    }                                           \
} while (0)

Definition at line 486 of file formats.c.

Referenced by ff_channel_layouts_changeref(), and ff_formats_changeref().

◆ SET_COMMON_FORMATS

#define SET_COMMON_FORMATS	(	ctx,
		fmts,
		in_fmts,
		out_fmts,
		ref_fn,
		unref_fn,
		list
	)

Definition at line 510 of file formats.c.

Referenced by ff_set_common_channel_layouts(), ff_set_common_formats(), and ff_set_common_samplerates().

Function Documentation

◆ ff_merge_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().

◆ ff_merge_samplerates()

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

Definition at line 139 of file formats.c.

Referenced by can_merge_formats(), and query_formats().

◆ ff_merge_channel_layouts()

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().

◆ 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 254 of file formats.c.

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

◆ ff_make_format_list()

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(), compressor(), cudascale_query_formats(), cudaupload_query_formats(), ff_opencl_filter_query_formats(), ff_vaapi_vpp_query_formats(), gate(), geq_query_formats(), hwupload_query_formats(), movie_query_formats(), nppscale_query_formats(), overlay_qsv_query_formats(), pp_query_formats(), qsvdeint_query_formats(), qsvscale_query_formats(), query_formats(), query_formats_src(), and request_frame().

◆ ff_make_formatu64_list()

AVFilterChannelLayouts* ff_make_formatu64_list ( const uint64_t * fmts )

Definition at line 292 of file formats.c.

◆ avfilter_make_format64_list()

AVFilterChannelLayouts* avfilter_make_format64_list ( const int64_t * fmts )

Definition at line 303 of file formats.c.

Referenced by movie_query_formats(), and query_formats().

◆ ff_add_format()

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 337 of file formats.c.

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

◆ ff_add_channel_layout()

int ff_add_channel_layout	(	AVFilterChannelLayouts **	l,
		uint64_t	channel_layout
	)

Definition at line 343 of file formats.c.

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

◆ ff_all_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 350 of file formats.c.

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

◆ ff_planar_sample_fmts()

AVFilterFormats* ff_planar_sample_fmts ( void )

Construct a formats list containing all planar sample formats.

Definition at line 382 of file formats.c.

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

◆ ff_all_samplerates()

AVFilterFormats* ff_all_samplerates ( void )

Definition at line 395 of file formats.c.

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

◆ ff_all_channel_layouts()

AVFilterChannelLayouts* ff_all_channel_layouts ( void )

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

Definition at line 401 of file formats.c.

Referenced by ff_query_formats_all_layouts(), filter_query_formats(), join_query_formats(), and query_formats().

◆ ff_all_channel_counts()

AVFilterChannelLayouts* ff_all_channel_counts ( void )

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

Definition at line 410 of file formats.c.

Referenced by aeval_query_formats(), asink_query_formats(), channelmap_query_formats(), compressor(), ff_default_query_formats(), filter_frame(), gate(), and query_formats().

◆ ff_channel_layouts_ref()

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

Add *ref as a new reference to f.

Definition at line 435 of file formats.c.

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

◆ ff_formats_ref()

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 440 of file formats.c.

Referenced by cudaupload_query_formats(), ff_set_common_formats(), ff_set_common_samplerates(), ff_vaapi_vpp_query_formats(), hwdownload_query_formats(), hwmap_query_formats(), hwupload_query_formats(), movie_query_formats(), overlay_qsv_query_formats(), query_formats(), and query_formats_src().

◆ ff_formats_unref()

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 476 of file formats.c.

Referenced by ff_add_format(), ff_formats_ref(), ff_set_common_formats(), ff_set_common_samplerates(), free_link(), hwdownload_query_formats(), init(), pick_format(), and reduce_formats_on_filter().

◆ ff_channel_layouts_unref()

void ff_channel_layouts_unref ( AVFilterChannelLayouts ** ref )

Remove a reference to a channel layouts list.

Definition at line 481 of file formats.c.

Referenced by ff_add_channel_layout(), ff_channel_layouts_ref(), ff_set_common_channel_layouts(), free_link(), init(), and pick_format().

◆ ff_channel_layouts_changeref()

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

Definition at line 499 of file formats.c.

Referenced by avfilter_insert_filter().

◆ ff_formats_changeref()

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

   Before                                 After

|formats |<------—.

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

Definition at line 505 of file formats.c.

Referenced by avfilter_insert_filter().

◆ ff_set_common_channel_layouts()

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 549 of file formats.c.

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

◆ ff_set_common_samplerates()

int ff_set_common_samplerates	(	AVFilterContext *	ctx,
		AVFilterFormats *	samplerates
	)

Definition at line 556 of file formats.c.

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

◆ ff_set_common_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 568 of file formats.c.

Referenced by aeval_query_formats(), asink_query_formats(), channelmap_query_formats(), compressor(), cudascale_query_formats(), default_query_formats_common(), ff_opencl_filter_query_formats(), filter_frame(), filter_query_formats(), gate(), geq_query_formats(), join_query_formats(), nppscale_query_formats(), pp_query_formats(), qsvdeint_query_formats(), qsvscale_query_formats(), query_formats(), request_frame(), and vsink_query_formats().

◆ default_query_formats_common()

static int default_query_formats_common	(	AVFilterContext *	ctx,
		AVFilterChannelLayouts *	layouts)(void
	)

static

Definition at line 574 of file formats.c.

Referenced by ff_default_query_formats(), and ff_query_formats_all_layouts().

◆ ff_default_query_formats()

int ff_default_query_formats ( AVFilterContext * ctx )

Definition at line 597 of file formats.c.

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

◆ ff_query_formats_all_layouts()

int ff_query_formats_all_layouts ( AVFilterContext * ctx )

Set the formats list to all known channel layouts.

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

Definition at line 602 of file formats.c.

◆ ff_parse_pixel_format()

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 609 of file formats.c.

Referenced by init().

◆ ff_parse_sample_format()

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 624 of file formats.c.

◆ ff_parse_time_base()

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 639 of file formats.c.

◆ ff_parse_sample_rate()

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 650 of file formats.c.

Referenced by init().

◆ ff_parse_channel_layout()

int ff_parse_channel_layout	(	int64_t *	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 662 of file formats.c.

Referenced by init(), and main().

Variable Documentation

◆ avfilter_all_channel_layouts

const int64_t avfilter_all_channel_layouts[]

Definition at line 372 of file formats.c.

Referenced by main().

Macros

Functions

Variables

Macro Definition Documentation

◆ KNOWN

◆ MERGE_REF

◆ MERGE_FORMATS

◆ MAKE_FORMAT_LIST

◆ ADD_FORMAT

◆ FORMATS_REF

◆ FIND_REF_INDEX

◆ FORMATS_UNREF

◆ FORMATS_CHANGEREF

◆ SET_COMMON_FORMATS

Function Documentation

◆ ff_merge_formats()

◆ ff_merge_samplerates()

◆ ff_merge_channel_layouts()

◆ ff_fmt_is_in()

◆ ff_make_format_list()

◆ ff_make_formatu64_list()

◆ avfilter_make_format64_list()

◆ ff_add_format()

◆ ff_add_channel_layout()

◆ ff_all_formats()

◆ ff_planar_sample_fmts()

◆ ff_all_samplerates()

◆ ff_all_channel_layouts()

◆ ff_all_channel_counts()

◆ ff_channel_layouts_ref()

◆ ff_formats_ref()

◆ ff_formats_unref()

◆ ff_channel_layouts_unref()

◆ ff_channel_layouts_changeref()

◆ ff_formats_changeref()

◆ ff_set_common_channel_layouts()

◆ ff_set_common_samplerates()

◆ ff_set_common_formats()

◆ default_query_formats_common()

◆ ff_default_query_formats()

◆ ff_query_formats_all_layouts()

◆ ff_parse_pixel_format()

◆ ff_parse_sample_format()

◆ ff_parse_time_base()

◆ ff_parse_sample_rate()

◆ ff_parse_channel_layout()

Variable Documentation

◆ avfilter_all_channel_layouts