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author | Pawel Osciak <p.osciak@samsung.com> | 2010-07-29 14:44:25 -0300 |
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committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2011-03-21 20:31:33 -0300 |
commit | f8f3914cf922f5f9e1d60e9e10f6fb92742907ad (patch) | |
tree | 41441ca44b6dc88a18a1886935aa83b2f9ac30b4 /drivers/media/video/v4l2-ioctl.c | |
parent | 4ec02ea0d88d811f61e2c7765418eff770936871 (diff) | |
download | linux-stable-f8f3914cf922f5f9e1d60e9e10f6fb92742907ad.tar.gz linux-stable-f8f3914cf922f5f9e1d60e9e10f6fb92742907ad.tar.bz2 linux-stable-f8f3914cf922f5f9e1d60e9e10f6fb92742907ad.zip |
[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 <p.osciak@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Reviewed-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video/v4l2-ioctl.c')
-rw-r--r-- | drivers/media/video/v4l2-ioctl.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/media/video/v4l2-ioctl.c b/drivers/media/video/v4l2-ioctl.c index f51327ef6757..1a9d90ab666b 100644 --- a/drivers/media/video/v4l2-ioctl.c +++ b/drivers/media/video/v4l2-ioctl.c @@ -165,6 +165,8 @@ const char *v4l2_type_names[] = { [V4L2_BUF_TYPE_SLICED_VBI_CAPTURE] = "sliced-vbi-cap", [V4L2_BUF_TYPE_SLICED_VBI_OUTPUT] = "sliced-vbi-out", [V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY] = "vid-out-overlay", + [V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE] = "vid-cap-mplane", + [V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE] = "vid-out-mplane", }; EXPORT_SYMBOL(v4l2_type_names); |