Make sure that the pointer to the compressed frame does not
get out of the buffer.
Signed-off-by: Dafna Hirschfeld <dafna3@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Add support for the selection api for the crop and compose targets.
The driver rounds up the coded width and height such that
all planes dimensions are multiple of 8.
Signed-off-by: Dafna Hirschfeld <dafna3@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
In the fwht_encode_frame, 'encoding = encode_plane'
should be replaced with 'encoding |= encode_plane'
so existing flags won't be overwrriten.
Signed-off-by: Dafna Hirschfeld <dafna3@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Add support for formats with 4 planes: V4L2_PIX_FMT_ABGR32,
V4L2_PIX_FMT_ARGB32.
Also add alpha plane related flags to the header of the encoded file.
Signed-off-by: Dafna Hirschfeld <dafna3@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
[hans.verkuil@cisco.com: fix line-too-long warnings]
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Add support for single plane greyscale format V4L2_PIX_FMT_GREY.
Also change the header of the encoded file to include the number
of components.
Signed-off-by: Dafna Hirschfeld <dafna3@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
[hans.verkuil@cisco.com: fix line-too-long warnings]
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Add fields to the structs `fwht_raw_frame`, `v4l2_fwht_pixfmts`
to support various number of planes - formats
with alpha channel that have 4 planes and greyscale formats
that have 1 plane.
Signed-off-by: Dafna Hirschfeld <dafna3@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
The FWHT codec can also be used by userspace utilities and libraries, but
since the current license is GPL and not LGPL it is not possible to include
it in e.g. gstreamer, since LGPL is required for that.
Change the license of these four files to LGPL.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Tom aan de Wiel <tom.aandewiel@gmail.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
While decoding you need to make sure you do not get values < 0
or > 255. Note that since this code will also be used in userspace
utilities the clamp macro isn't used since that is kernel-only.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
The codec source is generic and not vicodec specific. It can be used
by other drivers or userspace as well. So rename the source and header
to something more generic (codec-fwht.c/h) and prefix the defines, types
and functions with fwht_.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
