From: Pawel Osciak Date: Thu, 29 Jul 2010 17:44:25 +0000 (-0300) Subject: [media] v4l: Add multi-planar API definitions to the V4L2 API X-Git-Tag: v2.6.39-rc1~86^2~437 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f8f3914cf922f5f9e1d60e9e10f6fb92742907ad;p=pandora-kernel.git [media] v4l: Add multi-planar API definitions to the V4L2 API Multi-planar API is as a backwards-compatible extension of the V4L2 API, which allows video buffers to consist of one or more planes. Planes are separate memory buffers; each has its own mapping, backed by usually separate physical memory buffers. Many different uses for the multi-planar API are possible, examples include: - embedded devices requiring video components to be placed in physically separate buffers, e.g. for Samsung S3C/S5P SoC series' video codec, Y and interleaved Cb/Cr components reside in buffers in different memory banks; - applications may receive (or choose to store) video data of one video buffer in separate memory buffers; such data would have to be temporarily copied together into one buffer before passing it to a V4L2 device; - applications or drivers may want to pass metadata related to a buffer and it may not be possible to place it in the same buffer, together with video data. [mchehab@redhat.com: CodingStyle fixes] Signed-off-by: Pawel Osciak Signed-off-by: Kyungmin Park Reviewed-by: Marek Szyprowski Signed-off-by: Marek Szyprowski Reviewed-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- Reading git-diff-tree failed