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media: allegro: add control to disable encoder buffer

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The encoder buffer can have a negative impact on the quality of the
encoded video.

Add a control to allow user space to disable the encoder buffer per
channel if the VCU supports the encoder buffer but the quality is not
sufficient.

Signed-off-by: Michael Tretter <m.tretter@pengutronix.de>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
This commit is contained in:
Michael Tretter 2021-09-08 14:03:15 +01:00 • committed by Mauro Carvalho Chehab
parent 98f1cbf65b
commit 7aea2c0b48
2 changed files with 35 additions and 2 deletions
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5
include/uapi/linux/v4l2-controls.h
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@ -211,6 +211,11 @@ enum v4l2_colorfx {
* We reserve 128 controls for this driver.
*/
#define V4L2_CID_USER_CCS_BASE (V4L2_CID_USER_BASE + 0x10f0)
/*
* The base for Allegro driver controls.
* We reserve 16 controls for this driver.
*/
#define V4L2_CID_USER_ALLEGRO_BASE (V4L2_CID_USER_BASE + 0x1170)
/* MPEG-class control IDs */
/* The MPEG controls are applicable to all codec controls