FFmpeg
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#include "libavutil/avassert.h"
#include "libavutil/channel_layout.h"
#include "libavutil/common.h"
#include "libavutil/eval.h"
#include "libavutil/pixdesc.h"
#include "avfilter.h"
#include "internal.h"
#include "formats.h"
Go to the source code of this file.
Macros | |
#define | KNOWN(l) (!FF_LAYOUT2COUNT(l)) /* for readability */ |
#define | MERGE_REF(ret, a, fmts, type, fail_statement) |
Add all refs from a to ret and destroy a. More... | |
#define | MERGE_FORMATS(a, b, fmts, nb, type, check, empty_allowed) |
Add all formats common to a and b to a, add b's refs to a and destroy 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, ref_fn, unref_fn) |
Functions | |
static int | merge_formats_internal (AVFilterFormats *a, AVFilterFormats *b, enum AVMediaType type, int check) |
int | ff_can_merge_formats (const AVFilterFormats *a, const AVFilterFormats *b, enum AVMediaType type) |
Check the formats/samplerates lists for compatibility for merging without actually merging. More... | |
int | ff_merge_formats (AVFilterFormats *a, AVFilterFormats *b, enum AVMediaType type) |
static int | merge_samplerates_internal (AVFilterFormats *a, AVFilterFormats *b, int check) |
int | ff_can_merge_samplerates (const AVFilterFormats *a, const AVFilterFormats *b) |
int | ff_merge_samplerates (AVFilterFormats *a, AVFilterFormats *b) |
int | ff_merge_channel_layouts (AVFilterChannelLayouts *a, AVFilterChannelLayouts *b) |
Merge the formats/channel layouts/samplerates lists if they are compatible and update all the references of a and b to point to the combined list and free the old lists as needed. 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_format64_list (const int64_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... | |
int | ff_formats_pixdesc_filter (AVFilterFormats **rfmts, unsigned want, unsigned rej) |
Construct a formats list containing all pixel formats with certain properties. 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 *channel_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_default_query_formats (AVFilterContext *ctx) |
int | ff_parse_pixel_format (enum AVPixelFormat *ret, const char *arg, void *log_ctx) |
Parse a pixel format. 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... | |
static int | check_list (void *log, const char *name, const AVFilterFormats *fmts) |
int | ff_formats_check_pixel_formats (void *log, const AVFilterFormats *fmts) |
Check that fmts is a valid pixel formats list. More... | |
int | ff_formats_check_sample_formats (void *log, const AVFilterFormats *fmts) |
Check that fmts is a valid sample formats list. More... | |
int | ff_formats_check_sample_rates (void *log, const AVFilterFormats *fmts) |
Check that fmts is a valid sample rates list. More... | |
static int | layouts_compatible (uint64_t a, uint64_t b) |
int | ff_formats_check_channel_layouts (void *log, const AVFilterChannelLayouts *fmts) |
Check that fmts is a valid channel layouts list. More... | |
#define KNOWN | ( | l | ) | (!FF_LAYOUT2COUNT(l)) /* for readability */ |
Definition at line 31 of file formats.c.
Referenced by ff_merge_channel_layouts(), and layouts_compatible().
Add all refs from a to ret and destroy a.
Definition at line 36 of file formats.c.
Referenced by ff_merge_channel_layouts().
Add all formats common to a and b to a, add b's refs to a and destroy b.
If check is set, nothing is modified and it is only checked whether the formats are compatible. If empty_allowed is set and one of a,b->nb is zero, the lists are merged; otherwise, it is treated as error.
Definition at line 63 of file formats.c.
Referenced by merge_formats_internal(), and merge_samplerates_internal().
Definition at line 269 of file formats.c.
Referenced by ff_make_format64_list(), and ff_make_format_list().
Definition at line 314 of file formats.c.
Referenced by ff_add_channel_layout(), and ff_add_format().
Definition at line 446 of file formats.c.
Referenced by ff_channel_layouts_ref(), and ff_formats_ref().
#define FIND_REF_INDEX | ( | ref, | |
idx | |||
) |
Definition at line 482 of file formats.c.
Referenced by ff_channel_layouts_unref(), and ff_formats_unref().
#define FORMATS_CHANGEREF | ( | oldref, | |
newref | |||
) |
Definition at line 514 of file formats.c.
Referenced by ff_channel_layouts_changeref(), and ff_formats_changeref().
#define SET_COMMON_FORMATS | ( | ctx, | |
fmts, | |||
ref_fn, | |||
unref_fn | |||
) |
Definition at line 538 of file formats.c.
Referenced by ff_set_common_channel_layouts(), ff_set_common_formats(), and ff_set_common_samplerates().
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static |
Definition at line 96 of file formats.c.
Referenced by ff_can_merge_formats(), and ff_merge_formats().
int ff_can_merge_formats | ( | const AVFilterFormats * | a, |
const AVFilterFormats * | b, | ||
enum AVMediaType | type | ||
) |
Check the formats/samplerates lists for compatibility for merging without actually merging.
Definition at line 135 of file formats.c.
Referenced by query_formats().
int ff_merge_formats | ( | AVFilterFormats * | a, |
AVFilterFormats * | b, | ||
enum AVMediaType | type | ||
) |
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static |
Definition at line 149 of file formats.c.
Referenced by ff_can_merge_samplerates(), and ff_merge_samplerates().
int ff_can_merge_samplerates | ( | const AVFilterFormats * | a, |
const AVFilterFormats * | b | ||
) |
Definition at line 158 of file formats.c.
Referenced by query_formats().
int ff_merge_samplerates | ( | AVFilterFormats * | a, |
AVFilterFormats * | b | ||
) |
int ff_merge_channel_layouts | ( | AVFilterChannelLayouts * | a, |
AVFilterChannelLayouts * | b | ||
) |
Merge the formats/channel layouts/samplerates lists if they are compatible and update all the references of a and b to point to the combined list and free the old lists as needed.
The combined list usually contains the intersection of the lists of a and b.
Both a and b must have owners (i.e. refcount > 0) for these functions.
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.
fmt | provided format |
fmts | -1-terminated list of formats |
Definition at line 258 of file formats.c.
Referenced by config_input(), config_input_main(), config_input_overlay(), config_out_props(), and config_props().
AVFilterFormats* ff_make_format_list | ( | const int * | fmts | ) |
Create a list of supported formats.
This is intended for use in AVFilter->query_formats().
fmts | list of media formats, terminated by -1 |
Definition at line 287 of file formats.c.
Referenced by activate(), aeval_query_formats(), cudascale_query_formats(), cudaupload_query_formats(), deint_cuda_query_formats(), ff_opencl_filter_query_formats(), ff_vaapi_vpp_query_formats(), ff_vk_filter_query_formats(), gate(), geq_query_formats(), hwupload_query_formats(), movie_query_formats(), nppscale_query_formats(), npptranspose_query_formats(), overlay_cuda_query_formats(), overlay_qsv_query_formats(), pp_query_formats(), process_command(), qsvdeint_query_formats(), qsvscale_query_formats(), query_formats(), query_formats_src(), and uninit().
AVFilterChannelLayouts* ff_make_format64_list | ( | const int64_t * | fmts | ) |
Definition at line 296 of file formats.c.
Referenced by avfilter_make_format64_list(), movie_query_formats(), and query_formats().
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.
If *avff is NULL the function allocates the filter formats struct and puts its pointer in *avff.
Definition at line 333 of file formats.c.
Referenced by asink_query_formats(), ff_all_formats(), ff_draw_supported_pixel_formats(), ff_planar_sample_fmts(), gate(), hwupload_query_formats(), init(), query_formats(), reduce_formats_on_filter(), and vsink_query_formats().
int ff_add_channel_layout | ( | AVFilterChannelLayouts ** | l, |
uint64_t | channel_layout | ||
) |
Definition at line 339 of file formats.c.
Referenced by aeval_query_formats(), asink_query_formats(), channelmap_query_formats(), gate(), init(), join_query_formats(), process_command(), query_formats(), and reduce_formats_on_filter().
AVFilterFormats* ff_all_formats | ( | enum AVMediaType | type | ) |
Return a list of all formats supported by FFmpeg for the given media type.
Definition at line 346 of file formats.c.
Referenced by ff_default_query_formats(), filter_frame(), filter_query_formats(), hwmap_query_formats(), and query_formats().
int ff_formats_pixdesc_filter | ( | AVFilterFormats ** | rfmts, |
unsigned | want, | ||
unsigned | rej | ||
) |
Construct a formats list containing all pixel formats with certain properties.
Definition at line 368 of file formats.c.
Referenced by hwdownload_query_formats(), and query_formats().
AVFilterFormats* ff_planar_sample_fmts | ( | void | ) |
Construct a formats list containing all planar sample formats.
Definition at line 409 of file formats.c.
Referenced by channelmap_query_formats(), join_query_formats(), and query_formats().
AVFilterFormats* ff_all_samplerates | ( | void | ) |
Definition at line 422 of file formats.c.
Referenced by aeval_query_formats(), channelmap_query_formats(), ff_default_query_formats(), filter_frame(), filter_query_formats(), gate(), join_query_formats(), process_command(), 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 428 of file formats.c.
Referenced by 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 437 of file formats.c.
Referenced by aeval_query_formats(), asink_query_formats(), channelmap_query_formats(), ff_default_query_formats(), filter_frame(), gate(), process_command(), and query_formats().
int ff_channel_layouts_ref | ( | AVFilterChannelLayouts * | f, |
AVFilterChannelLayouts ** | ref | ||
) |
Add *ref as a new reference to f.
Definition at line 462 of file formats.c.
Referenced by aeval_query_formats(), channelmap_query_formats(), ff_set_common_channel_layouts(), gate(), join_query_formats(), movie_query_formats(), process_command(), 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 467 of file formats.c.
Referenced by cudaupload_query_formats(), deint_cuda_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().
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 504 of file formats.c.
Referenced by ff_add_format(), ff_formats_ref(), ff_set_common_formats(), ff_set_common_samplerates(), free_link(), pick_format(), and uninit().
void ff_channel_layouts_unref | ( | AVFilterChannelLayouts ** | ref | ) |
Remove a reference to a channel layouts list.
Definition at line 509 of file formats.c.
Referenced by ff_add_channel_layout(), ff_channel_layouts_ref(), ff_set_common_channel_layouts(), free_link(), pick_format(), and uninit().
void ff_channel_layouts_changeref | ( | AVFilterChannelLayouts ** | oldref, |
AVFilterChannelLayouts ** | newref | ||
) |
Definition at line 527 of file formats.c.
Referenced by avfilter_insert_filter().
void ff_formats_changeref | ( | AVFilterFormats ** | oldref, |
AVFilterFormats ** | newref | ||
) |
Before After
|formats |<------—.
|formats |<------—. | ____ | ___|___ | ____ | ___|___ | |refs| | | | | | |refs| | | | | NULL | |* *------—>|*oldref| | |* *------—>|*newref| ^ | |* * | | |_______| | |* * | | |_______| ___|___ | |____| | | |____| | | | | |________| |________| |*oldref| |_______|
Definition at line 533 of file formats.c.
Referenced by avfilter_insert_filter().
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 569 of file formats.c.
Referenced by aeval_query_formats(), asink_query_formats(), ff_default_query_formats(), filter_frame(), filter_query_formats(), gate(), process_command(), and query_formats().
int ff_set_common_samplerates | ( | AVFilterContext * | ctx, |
AVFilterFormats * | samplerates | ||
) |
Definition at line 576 of file formats.c.
Referenced by aeval_query_formats(), asink_query_formats(), channelmap_query_formats(), ff_default_query_formats(), filter_frame(), filter_query_formats(), gate(), join_query_formats(), process_command(), 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 588 of file formats.c.
Referenced by activate(), aeval_query_formats(), asink_query_formats(), channelmap_query_formats(), cudascale_query_formats(), ff_default_query_formats(), ff_opencl_filter_query_formats(), ff_vk_filter_query_formats(), filter_frame(), filter_query_formats(), gate(), geq_query_formats(), join_query_formats(), nppscale_query_formats(), npptranspose_query_formats(), overlay_cuda_query_formats(), pp_query_formats(), process_command(), qsvdeint_query_formats(), qsvscale_query_formats(), query_formats(), uninit(), and vsink_query_formats().
int ff_default_query_formats | ( | AVFilterContext * | ctx | ) |
Definition at line 594 of file formats.c.
Referenced by main(), query_formats(), uninit(), and vsink_query_formats().
int ff_parse_pixel_format | ( | enum AVPixelFormat * | ret, |
const char * | arg, | ||
void * | log_ctx | ||
) |
Parse a channel layout or a corresponding integer representation.
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 |
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static |
Definition at line 666 of file formats.c.
Referenced by ff_formats_check_pixel_formats(), ff_formats_check_sample_formats(), and ff_formats_check_sample_rates().
int ff_formats_check_pixel_formats | ( | void * | log, |
const AVFilterFormats * | fmts | ||
) |
Check that fmts is a valid pixel formats list.
In particular, check for duplicates.
Definition at line 687 of file formats.c.
Referenced by filter_link_check_formats().
int ff_formats_check_sample_formats | ( | void * | log, |
const AVFilterFormats * | fmts | ||
) |
Check that fmts is a valid sample formats list.
In particular, check for duplicates.
Definition at line 692 of file formats.c.
Referenced by filter_link_check_formats().
int ff_formats_check_sample_rates | ( | void * | log, |
const AVFilterFormats * | fmts | ||
) |
Check that fmts is a valid sample rates list.
In particular, check for duplicates.
Definition at line 697 of file formats.c.
Referenced by filter_link_check_formats().
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static |
Definition at line 704 of file formats.c.
Referenced by ff_formats_check_channel_layouts().
int ff_formats_check_channel_layouts | ( | void * | log, |
const AVFilterChannelLayouts * | fmts | ||
) |
Check that fmts is a valid channel layouts list.
In particular, check for duplicates.
Definition at line 711 of file formats.c.
Referenced by filter_link_check_formats().