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Functions | |
static void | merge_ref (AVFilterFormats *ret, AVFilterFormats *a) |
Add all refs from a to ret and destroy a. | |
AVFilterFormats * | avfilter_merge_formats (AVFilterFormats *a, AVFilterFormats *b) |
Return a format list which contains the intersection of the formats of a and b. | |
int | ff_fmt_is_in (int fmt, const int *fmts) |
Tell is a format is contained in the provided list terminated by -1. | |
AVFilterFormats * | avfilter_make_format_list (const int *fmts) |
Create a list of supported formats. | |
int | avfilter_add_format (AVFilterFormats **avff, int fmt) |
Add fmt to the list of media formats contained in *avff. | |
AVFilterFormats * | avfilter_all_formats (enum AVMediaType type) |
Return a list of all formats supported by Libav for the given media type. | |
void | avfilter_formats_ref (AVFilterFormats *f, AVFilterFormats **ref) |
Add *ref as a new reference to formats. | |
static int | find_ref_index (AVFilterFormats **ref) |
void | avfilter_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. | |
void | avfilter_formats_changeref (AVFilterFormats **oldref, AVFilterFormats **newref) |
Before After |formats |<------—. |
int avfilter_add_format | ( | AVFilterFormats ** | avff, |
int | 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 107 of file formats.c.
Referenced by avfilter_all_formats(), and query_formats().
AVFilterFormats* avfilter_all_formats | ( | enum AVMediaType | type | ) |
Return a list of all formats supported by Libav for the given media type.
Definition at line 124 of file formats.c.
Referenced by avfilter_default_query_formats().
void avfilter_formats_changeref | ( | AVFilterFormats ** | oldref, |
AVFilterFormats ** | newref | ||
) |
Before After
|formats |<---------.
| ____ | ___|___ | ____ | ___|___ | |refs| | | | | | |refs| | | | | NULL | |* *------—>|*oldref| | |* *------—>|*newref| ^ | |* * | | |_______| | |* * | | |_______| ___|___ | |____| | | |____| | | | | |________| |________| |*oldref| |_______|
Definition at line 176 of file formats.c.
Referenced by avfilter_insert_filter().
void avfilter_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:
Definition at line 139 of file formats.c.
Referenced by avfilter_set_common_formats(), and query_formats().
void avfilter_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 155 of file formats.c.
Referenced by avfilter_free(), pick_format(), and query_formats().
AVFilterFormats* avfilter_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 90 of file formats.c.
Referenced by query_formats().
AVFilterFormats* avfilter_merge_formats | ( | AVFilterFormats * | a, |
AVFilterFormats * | b | ||
) |
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 43 of file formats.c.
Referenced by query_formats().
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 79 of file formats.c.
Referenced by config_props().
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static |
Definition at line 146 of file formats.c.
Referenced by avfilter_formats_changeref(), and avfilter_formats_unref().
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static |
Add all refs from a to ret and destroy a.
Definition at line 29 of file formats.c.
Referenced by avfilter_merge_formats().