| Commit message (Collapse) | Author | Age | Files | Lines |
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Note1: when the EOF pts is not accurate enough, the last frame
can be dropped by vf_fps with default rounding.
Note2: vf_scale use framesync since e82a3997cdd6c0894869b33ba42430ac3,
so this is a very commonplace scenario.
For example:
./ffprobe -f lavfi testsrc=d=1,scale,fps -of flat \
-count_frames -show_entries stream=nb_read_frames
Before:
streams.stream.0.nb_read_frames="24"
After:
streams.stream.0.nb_read_frames="25"
Signed-off-by: Anton Khirnov <anton@khirnov.net>
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Callers of ff_framesync_get_frame() generally do not expect the result
to be writable, those that do (e.g. ff_framesync_dualinput_get_writable())
ensure writability themselves.
Significantly reduces memory consumption in complex graphs with
framesync-based filters (e.g. scale, ssim).
Reported-By: Mark Shwartzman
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Signed-off-by: James Almer <jamrial@gmail.com>
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And rename to ff_framesync_class. More convenient for downstream users.
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There are lots of files that don't need it: The number of object
files that actually need it went down from 2011 to 884 here.
Keep it for external users in order to not cause breakages.
Also improve the other headers a bit while just at it.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
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Makes it robust against adding fields before it, which will be useful in
following commits.
Majority of the patch generated by the following Coccinelle script:
@@
typedef AVOption;
identifier arr_name;
initializer list il;
initializer list[8] il1;
expression tail;
@@
AVOption arr_name[] = { il, { il1,
- tail
+ .unit = tail
}, ... };
with some manual changes, as the script:
* has trouble with options defined inside macros
* sometimes does not handle options under an #else branch
* sometimes swallows whitespace
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Fixes OOM when caller keeps adding frames into filtergraph
that reached EOF by other means, for example EOF is signalled
by other filter in filtergraph or by buffersink.
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Reviewed-by: Sean McGovern <gseanmcg@gmail.com>
Reviewed-by: Nicolas George <george@nsup.org>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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secondary input timestamps
Include two values for it, a default one that sets/keeps the current behavior,
where the frame event generated by the primary input will have a timestamp
equal or higher than frames in secondary input, plus a new one where the
secondary input frame will be that with the absolute closest timestamp to that
of the frame event one.
Addresses ticket #9689, where the new optional behavior produces better frame
syncronization.
Reviewed-by: Nicolas George <george@nsup.org>
Signed-off-by: James Almer <jamrial@gmail.com>
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Every filter exposing the framesync options via its child_next
callback already calls framesync_preinit() in its preinit callback.
So the filter is already preinited whenever its child_next is called.
Reviewed-by: Nicolas George <george@nsup.org>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
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Shifted check of shortest to after repeatlast,
to ensure shortest=1 is always honoured.
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Fix CID 1416960.
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Fix an infinite loop in forward_status_change().
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It has no longer any effect.
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Signed-off-by: Paul B Mahol <onemda@gmail.com>
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Compared to dualinput, this API can handle more than two
inputs and can generate frames synchronized to any or all
input streams.
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