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| author | Nicolas George <george@nsup.org> | 2016-12-24 13:16:59 +0100 |
|---|---|---|
| committer | Nicolas George <george@nsup.org> | 2017-01-12 14:06:16 +0100 |
| commit | 9eb4c79afd437a2913088cb1593892625a3125fc (patch) | |
| tree | ddbafc3c53b9d577867b2f1ed2c4126fac7e448b | |
| parent | d3cb140433fe1dfcd3c1f1bd5febe95b2b338a06 (diff) | |
| download | ffmpeg-9eb4c79afd437a2913088cb1593892625a3125fc.tar.gz | |
lavfi: add ff_inlink_request_frame().
| -rw-r--r-- | libavfilter/avfilter.c | 8 | ||||
| -rw-r--r-- | libavfilter/filters.h | 8 |
2 files changed, 16 insertions, 0 deletions
diff --git a/libavfilter/avfilter.c b/libavfilter/avfilter.c index 741676a9ec..75597d054e 100644 --- a/libavfilter/avfilter.c +++ b/libavfilter/avfilter.c @@ -1638,6 +1638,14 @@ int ff_inlink_evaluate_timeline_at_frame(AVFilterLink *link, const AVFrame *fram return fabs(av_expr_eval(dstctx->enable, dstctx->var_values, NULL)) >= 0.5; } +void ff_inlink_request_frame(AVFilterLink *link) +{ + av_assert1(!link->status_in); + av_assert1(!link->status_out); + link->frame_wanted_out = 1; + ff_filter_set_ready(link->src, 100); +} + const AVClass *avfilter_get_class(void) { return &avfilter_class; diff --git a/libavfilter/filters.h b/libavfilter/filters.h index fe3b612fc2..2c78d60e62 100644 --- a/libavfilter/filters.h +++ b/libavfilter/filters.h @@ -126,4 +126,12 @@ int ff_inlink_make_frame_writable(AVFilterLink *link, AVFrame **rframe); */ int ff_inlink_acknowledge_status(AVFilterLink *link, int *rstatus, int64_t *rpts); +/** + * Mark that a frame is wanted on the link. + * Unlike ff_filter_frame(), it must not be called when the link has a + * non-zero status, and thus does not acknowledge it. + * Also it cannot fail. + */ +void ff_inlink_request_frame(AVFilterLink *link); + #endif /* AVFILTER_FILTERS_H */ |