[media] media i.MX27 camera: improve discard buffer handling

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The way discard buffer was previously handled lead
to possible races that made a buffer that was not
yet ready to be overwritten by new video data. This
is easily detected at 25fps just adding "#define DEBUG"
to enable the "memset" check and seeing how the image
is corrupted.

A new "discard" queue and two discard buffers have
been added to make them flow trough the pipeline
of queues and thus provide suitable event ordering.

Signed-off-by: Javier Martin <javier.martin@vista-silicon.com>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

...

This commit is contained in:

Javier Martin 2012-02-07 07:14:42 -03:00 • committed by Mauro Carvalho Chehab

parent fb51cbdd3e

commit cdc9d6f191

1 changed files with 161 additions and 126 deletions

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287

drivers/media/video/mx2_camera.c

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