media: imx-jpeg: Align upwards buffer size

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The hardware can support any image size WxH,
with arbitrary W (image width) and H (image height) dimensions.

Align upwards buffer size for both encoder and decoder.
and leave the picture resolution unchanged.

For decoder, the risk of memory out of bounds can be avoided.
For both encoder and decoder, the driver will lift the limitation of
resolution alignment.

For example, the decoder can support jpeg whose resolution is 227x149
the encoder can support nv12 1080P, won't change it to 1920x1072.

Fixes: 2db16c6ed7 ("media: imx-jpeg: Add V4L2 driver for i.MX8 JPEG Encoder/Decoder")
Signed-off-by: Ming Qian <ming.qian@nxp.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

...

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Ming Qian 2022-05-30 08:49:19 +01:00 • committed by Mauro Carvalho Chehab

parent 6285cdea19

commit 9e7aa76cdb

1 changed files with 37 additions and 51 deletions

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drivers/media/platform/nxp/imx-jpeg/mxc-jpeg.c

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