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Subject: [media] v4l: v4l2_subdev userspace format API Author: Laurent Pinchart <[email protected]> Date: Mon Mar 15 20:26:04 2010 -0300 Add a userspace API to get, set and enumerate the media format on a subdev pad. The format at the output of a subdev usually depends on the format at its input(s). The try format operation is thus not suitable for probing format at individual pads, as it can't modify the device state and thus can't remember the format tried at the input to compute the output format. To fix the problem, pass an extra argument to the get/set format operations to select the 'try' or 'active' format. The try format is used when probing the subdev. Setting the try format must not change the device configuration but can store data for later reuse. Data storage is provided at the file-handle level so applications probing the subdev concurently won't interfere with each other. The active format is used when configuring the subdev. It's identical to the format handled by the usual get/set operations. Signed-off-by: Laurent Pinchart <[email protected]> Signed-off-by: Stanimir Varbanov <[email protected]> Signed-off-by: Sakari Ailus <[email protected]> Acked-by: Hans Verkuil <[email protected]> Signed-off-by: Mauro Carvalho Chehab <[email protected]> Documentation/DocBook/Makefile | 5 +- Documentation/DocBook/media-entities.tmpl | 16 + Documentation/DocBook/v4l/dev-subdev.xml | 280 +++ Documentation/DocBook/v4l/subdev-formats.xml | 2416 ++++++++++++++++++++ Documentation/DocBook/v4l/v4l2.xml | 4 + Documentation/DocBook/v4l/vidioc-streamon.xml | 9 + .../DocBook/v4l/vidioc-subdev-enum-frame-size.xml | 154 ++ .../DocBook/v4l/vidioc-subdev-enum-mbus-code.xml | 119 + Documentation/DocBook/v4l/vidioc-subdev-g-fmt.xml | 180 ++ drivers/media/video/v4l2-subdev.c | 49 + include/linux/Kbuild | 1 + include/linux/v4l2-subdev.h | 90 + include/media/v4l2-subdev.h | 10 + 13 files changed, 3332 insertions(+), 1 deletions(-) --- http://git.linuxtv.org/media_tree.git?a=commitdiff;h=a229d6846efa1ff8f3fe9d42028e65838fe02eba <diff discarded since it is too big> _______________________________________________ linuxtv-commits mailing list [email protected] http://www.linuxtv.org/cgi-bin/mailman/listinfo/linuxtv-commits
