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FFmpeg
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#include "avfilter.h"Go to the source code of this file.
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... | |
| #define | FF_PIX_FMT_FLAG_SW_FLAT_SUB (1 << 24) |
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.
| #define FF_LAYOUT2COUNT | ( | l | ) |
| 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 177 of file formats.c.
Referenced by query_formats().
| AVFilterFormats* ff_merge_samplerates | ( | AVFilterFormats * | a, |
| AVFilterFormats * | b | ||
| ) |
Definition at line 150 of file formats.c.
Referenced by can_merge_formats(), and query_formats().
| av_warn_unused_result AVFilterChannelLayouts* ff_all_channel_layouts | ( | void | ) |
Construct an empty AVFilterChannelLayouts/AVFilterFormats struct – representing any channel layout (with known disposition)/sample rate.
Definition at line 445 of file formats.c.
Referenced by ff_query_formats_all_layouts(), filter_query_formats(), join_query_formats(), and query_formats().
| av_warn_unused_result AVFilterFormats* ff_all_samplerates | ( | void | ) |
Definition at line 439 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().
| av_warn_unused_result AVFilterChannelLayouts* ff_all_channel_counts | ( | void | ) |
Construct an AVFilterChannelLayouts coding for any channel layout, with known or unknown disposition.
Definition at line 454 of file formats.c.
Referenced by aeval_query_formats(), asink_query_formats(), channelmap_query_formats(), ff_default_query_formats(), and query_formats().
| av_warn_unused_result AVFilterChannelLayouts* avfilter_make_format64_list | ( | const int64_t * | fmts | ) |
Definition at line 320 of file formats.c.
Referenced by movie_query_formats(), and query_formats().
| av_warn_unused_result AVFilterChannelLayouts* ff_make_formatu64_list | ( | const uint64_t * | fmts | ) |
| av_warn_unused_result 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 586 of file formats.c.
Referenced by aeval_query_formats(), asink_query_formats(), default_query_formats_common(), filter_query_formats(), and query_formats().
| av_warn_unused_result int ff_set_common_samplerates | ( | AVFilterContext * | ctx, |
| AVFilterFormats * | samplerates | ||
| ) |
Definition at line 593 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().
| av_warn_unused_result 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 605 of file formats.c.
Referenced by aeval_query_formats(), asink_query_formats(), channelmap_query_formats(), cudascale_query_formats(), default_query_formats_common(), ff_opencl_filter_query_formats(), ff_vk_filter_query_formats(), filter_query_formats(), geq_query_formats(), join_query_formats(), nppscale_query_formats(), npptranspose_query_formats(), overlay_cuda_query_formats(), pp_query_formats(), qsvdeint_query_formats(), qsvscale_query_formats(), query_formats(), and vsink_query_formats().
| av_warn_unused_result int ff_add_channel_layout | ( | AVFilterChannelLayouts ** | l, |
| uint64_t | channel_layout | ||
| ) |
Definition at line 356 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().
| av_warn_unused_result int ff_channel_layouts_ref | ( | AVFilterChannelLayouts * | f, |
| AVFilterChannelLayouts ** | ref | ||
| ) |
Add *ref as a new reference to f.
Definition at line 479 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 526 of file formats.c.
Referenced by ff_add_channel_layout(), ff_channel_layouts_ref(), ff_set_common_channel_layouts(), free_link(), init(), pick_format(), and uninit().
| void ff_channel_layouts_changeref | ( | AVFilterChannelLayouts ** | oldref, |
| AVFilterChannelLayouts ** | newref | ||
| ) |
Definition at line 544 of file formats.c.
Referenced by avfilter_insert_filter().
| av_warn_unused_result int ff_default_query_formats | ( | AVFilterContext * | ctx | ) |
Definition at line 634 of file formats.c.
Referenced by main(), query_formats(), and vsink_query_formats().
| av_warn_unused_result 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.
| av_warn_unused_result 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 300 of file formats.c.
Referenced by 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(), 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(), qsvdeint_query_formats(), qsvscale_query_formats(), query_formats(), and query_formats_src().
| av_warn_unused_result 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 350 of file formats.c.
Referenced by asink_query_formats(), ff_all_formats(), ff_draw_supported_pixel_formats(), ff_planar_sample_fmts(), hwupload_query_formats(), init(), query_formats(), reduce_formats_on_filter(), and vsink_query_formats().
| av_warn_unused_result AVFilterFormats* ff_all_formats | ( | enum AVMediaType | type | ) |
Return a list of all formats supported by FFmpeg for the given media type.
Definition at line 363 of file formats.c.
Referenced by default_query_formats_common(), filter_query_formats(), hwmap_query_formats(), and query_formats().
| av_warn_unused_result 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 385 of file formats.c.
Referenced by hwdownload_query_formats(), and query_formats().
| av_warn_unused_result AVFilterFormats* ff_planar_sample_fmts | ( | void | ) |
Construct a formats list containing all planar sample formats.
Definition at line 426 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 103 of file formats.c.
Referenced by can_merge_formats(), and query_formats().
| av_warn_unused_result 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 484 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 521 of file formats.c.
Referenced by ff_add_format(), ff_formats_ref(), ff_set_common_formats(), ff_set_common_samplerates(), free_link(), init(), pick_format(), query_formats(), reduce_formats_on_filter(), and uninit().
| void ff_formats_changeref | ( | AVFilterFormats ** | oldref, |
| AVFilterFormats ** | newref | ||
| ) |
Before After
|formats |<------—. |formats |<------—. | ____ | ___|___ | ____ | ___|___ | |refs| | | | | | |refs| | | | | NULL | |* ------—>|*oldref| | | ------—>|*newref| ^ | | * | | |_______| | |* * | | |_______| ___|___ | |____| | | |____| | | | | |________| |________| |*oldref| |_______|
Definition at line 550 of file formats.c.
Referenced by avfilter_insert_filter().
1.8.17