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6853c3eea8
Originally, if a buffer arrives with crop meta but downstream doesn't handle crop allocation meta, vapostproc tried to reconfigure itself to non pass-through mode automatically. Sadly, this behavior was based on the wrong assumption that propose_allocation() vmethod would bring downstream allocation query, but it is not. Now, if vapostproc is in pass-through mode, the cropping is passed to downstream. Pass-through mode can be disabled via a parameter. Finally, if pass-through mode isn't enabled, it's assumed the buffer is going to be processed and, if cropping, downstream already negotiated the cropped frame size, thus it's required to do the cropping inside vapostproc to avoid artifacts because of the size of downstream allocated buffers. Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/2443> |
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