linux-kernel - [PATCH] media: v4l2-ctrls: set AV1 sequence flags for testing

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <20251028062623.12700-1-opensource206@gmail.com>
Date: Tue, 28 Oct 2025 11:56:23 +0530
From: Pavan Bobba <opensource206@...il.com>
To: mchehab@...nel.org,
	hverkuil@...nel.org,
	ribalda@...omium.org,
	laurent.pinchart@...asonboard.com,
	hansg@...nel.org,
	yunkec@...gle.com,
	sakari.ailus@...ux.intel.com,
	james.cowgill@...ize.com
Cc: linux-media@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Pavan Bobba <opensource206@...il.com>
Subject: [PATCH] media: v4l2-ctrls: set AV1 sequence flags for testing

Initialize additional AV1 sequence parameters in std_init_compound()
to make the default AV1 sequence control compatible with compliance
and userspace testing tools.

Specifically, set:
 - enable both SUBSAMPLING_X and SUBSAMPLING_Y flags

These defaults help ensure that V4L2_CID_AV1_SEQUENCE behaves
consistently during validation and v4l2-compliance tests.

Signed-off-by: Pavan Bobba <opensource206@...il.com>
---
 drivers/media/v4l2-core/v4l2-ctrls-core.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/media/v4l2-core/v4l2-ctrls-core.c b/drivers/media/v4l2-core/v4l2-ctrls-core.c
index fa03341588e4..8809912797d2 100644
--- a/drivers/media/v4l2-core/v4l2-ctrls-core.c
+++ b/drivers/media/v4l2-core/v4l2-ctrls-core.c
@@ -160,7 +160,13 @@ static void std_init_compound(const struct v4l2_ctrl *ctrl, u32 idx,
 		break;
 	case V4L2_CTRL_TYPE_AV1_SEQUENCE:
 		p_av1_sequence = p;
+		/*
+		 *setting below parameters to make AV1 sequence compatible
+		 *for the testing
+		 */
 		p_av1_sequence->bit_depth = 8;
+		p_av1_sequence->flags |= V4L2_AV1_SEQUENCE_FLAG_SUBSAMPLING_X |
+			V4L2_AV1_SEQUENCE_FLAG_SUBSAMPLING_Y;
 		break;
 	case V4L2_CTRL_TYPE_FWHT_PARAMS:
 		p_fwht_params = p;
-- 
2.43.0