diff options
author | Nicolas George <george@nsup.org> | 2017-07-31 00:29:01 +0200 |
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committer | Nicolas George <george@nsup.org> | 2017-08-29 10:19:04 +0200 |
commit | f8d7b5febba075035a94de5d7d1dc9083ad2f3ed (patch) | |
tree | 146cee9da69a3c8dfb9e6261a69109bbf53e0b54 /libavfilter/avfilter.h | |
parent | 19804024d5b26e9568ce2f21f15c6664717006cd (diff) |
lavfi: add a preinit callback to filters.
It is necessary for filters with child objects, to set the class
and default options values.
Diffstat (limited to 'libavfilter/avfilter.h')
-rw-r--r-- | libavfilter/avfilter.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/libavfilter/avfilter.h b/libavfilter/avfilter.h index 60662c19ac..73a723d583 100644 --- a/libavfilter/avfilter.h +++ b/libavfilter/avfilter.h @@ -195,6 +195,21 @@ typedef struct AVFilter { */ /** + * Filter pre-initialization function + * + * This callback will be called immediately after the filter context is + * allocated, to allow allocating and initing sub-objects. + * + * If this callback is not NULL, the uninit callback will be called on + * allocation failure. + * + * @return 0 on success, + * AVERROR code on failure (but the code will be + * dropped and treated as ENOMEM by the calling code) + */ + int (*preinit)(AVFilterContext *ctx); + + /** * Filter initialization function. * * This callback will be called only once during the filter lifetime, after |