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-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <d14b8c18-55b9-472c-897d-3a481892b080@xs4all.nl>
Date: Fri, 14 Mar 2025 10:41:04 +0100
From: Hans Verkuil <hverkuil@...all.nl>
To: Richard Leitner <richard.leitner@...ux.dev>,
 Sakari Ailus <sakari.ailus@...ux.intel.com>,
 Dave Stevenson <dave.stevenson@...pberrypi.com>,
 Mauro Carvalho Chehab <mchehab@...nel.org>, Lee Jones <lee@...nel.org>,
 Pavel Machek <pavel@...nel.org>,
 Laurent Pinchart <laurent.pinchart@...asonboard.com>
Cc: linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
 linux-leds@...r.kernel.org
Subject: Re: [PATCH v2 4/8] Documentation: uAPI: media: add
 V4L2_CID_FLASH_DURATION

On 14/03/2025 09:49, Richard Leitner wrote:
> Add the new strobe_duration control to v4l uAPI documentation.
> 
> Signed-off-by: Richard Leitner <richard.leitner@...ux.dev>
> ---
>  Documentation/userspace-api/media/v4l/ext-ctrls-flash.rst | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/Documentation/userspace-api/media/v4l/ext-ctrls-flash.rst b/Documentation/userspace-api/media/v4l/ext-ctrls-flash.rst
> index d22c5efb806a183a3ad67ec3e6550b002a51659a..03a58ef94be7c870f55d5a9bb09503995dbfb402 100644
> --- a/Documentation/userspace-api/media/v4l/ext-ctrls-flash.rst
> +++ b/Documentation/userspace-api/media/v4l/ext-ctrls-flash.rst
> @@ -186,3 +186,8 @@ Flash Control IDs
>      charged before strobing. LED flashes often require a cooldown period
>      after strobe during which another strobe will not be possible. This
>      is a read-only control.
> +
> +``V4L2_CID_FLASH_DURATION (integer)``
> +    Duration the flash should be on when the flash LED is in flash mode
> +    (V4L2_FLASH_LED_MODE_FLASH). The unit should be microseconds (µs)
> +    if possible.
> 

If this control is present, does that mean that the flash duration always have
to be set manually? Or can there be an 'Auto' mode as well? And if so, how is
that set?

Regards,

	Hans

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ