linux-kernel - [PATCH v3] media: usb: uvc: Add UVC_GUID_FORMAT

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: <20220418090652.3156-1-Ping-lei.Lin@mediatek.com>
Date:   Mon, 18 Apr 2022 17:06:52 +0800
From:   James_Lin <Ping-lei.Lin@...iatek.com>
To:     <linux-kernel@...r.kernel.org>
CC:     Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Hans Verkuil <hverkuil-cisco@...all.nl>,
        Ezequiel Garcia <ezequiel@...guardiasur.com.ar>,
        Arnd Bergmann <arnd@...db.de>,
        Ricardo Ribalda <ribalda@...omium.org>,
        Sergey Senozhatsky <senozhatsky@...omium.org>,
        Alexandre Courbot <acourbot@...omium.org>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        <linux-media@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>, <ping-lei.lin@...iatek.com>,
        <sherlock.chang@...iatek.com>, <lecopzer.chen@...iatek.com>,
        <max.yan@...iatek.com>, <tm.wu@...iatek.com>,
        James_Lin <Ping-lei.Lin@...iatek.com>
Subject: [PATCH v3] media: usb: uvc: Add UVC_GUID_FORMAT_H265

This patch aims to add UVC_GUID_FORMAT_H265
High Efficiency Video Coding (HEVC), also known as H.265 and MPEG-H Part 2.
They describe the same video encoding method.
So for handling their behavior is the same.
However, when external camera device describes this encoding method, 
some use hevc, some use h265.
There is no uniform specification to describe this encoding method.
So if an external camera device use h265 to describe this encoding method,
driver will not recognize it.
Therefore, this patch is to enable driver to read HEVC/H265 
and convert it to V4L2_PIX_FMT_HEVC.

Signed-off-by: James_Lin <Ping-lei.Lin@...iatek.com>
---
 drivers/media/usb/uvc/uvc_driver.c | 5 +++++
 drivers/media/usb/uvc/uvcvideo.h   | 3 +++
 2 files changed, 8 insertions(+)

diff --git a/drivers/media/usb/uvc/uvc_driver.c b/drivers/media/usb/uvc/uvc_driver.c
index dda0f0aa78b8..e437e9f95890 100644
--- a/drivers/media/usb/uvc/uvc_driver.c
+++ b/drivers/media/usb/uvc/uvc_driver.c
@@ -154,6 +154,11 @@ static struct uvc_format_desc uvc_fmts[] = {
 		.guid		= UVC_GUID_FORMAT_H264,
 		.fcc		= V4L2_PIX_FMT_H264,
 	},
+	{
+		.name		= "H.265",
+		.guid		= UVC_GUID_FORMAT_H265,
+		.fcc		= V4L2_PIX_FMT_HEVC,
+	},
 	{
 		.name		= "Greyscale 8 L/R (Y8I)",
 		.guid		= UVC_GUID_FORMAT_Y8I,
diff --git a/drivers/media/usb/uvc/uvcvideo.h b/drivers/media/usb/uvc/uvcvideo.h
index 143230b3275b..41f4d8c33f2a 100644
--- a/drivers/media/usb/uvc/uvcvideo.h
+++ b/drivers/media/usb/uvc/uvcvideo.h
@@ -139,6 +139,9 @@
 #define UVC_GUID_FORMAT_H264 \
 	{ 'H',  '2',  '6',  '4', 0x00, 0x00, 0x10, 0x00, \
 	 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
+#define UVC_GUID_FORMAT_H265 \
+	{ 'H',  '2',  '6',  '5', 0x00, 0x00, 0x10, 0x00, \
+	 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
 #define UVC_GUID_FORMAT_Y8I \
 	{ 'Y',  '8',  'I',  ' ', 0x00, 0x00, 0x10, 0x00, \
 	 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
-- 
2.18.0