Hans,
My name is pat brown. I work for motorola solutions.
I am using a 8 megapixel camera and the lib4vl2 library is giving me an error:
libv4l2: error converting / decoding frame data: v4l-convert: error destination buffer too small (16777216 < 23970816)
VIDIOC_DQBUF: Bad address
v4l-utils-HEAD-4dea4af/lib/libv4l2/libv4l2-priv.h
I have tracked it down to the following:
/lib/libv4l2/libv4l2-priv.h:#define V4L2_FRAME_BUF_SIZE (4096 * 4096)
When I changed the value to :
/lib/libv4l2/libv4l2-priv.h:#define V4L2_FRAME_BUF_SIZE (2 * 4096 * 4096)
How can this change be properly integrated. This problem impacts the opencv software package.
Pat,
631 880 1188
________________________________________
From: Hans Verkuil <hansverk@xxxxxxxxx>
Sent: Thursday, December 12, 2013 1:42 AM
To: Brown Patrick-PMH786
Cc: Seiter Paul-VNJW48; Clayton Mark-AMC036; Super Boaz-SUPER1
Subject: Re: problems with larger raw video images
Hi Pat!
The best approach is to post it to the linux-media mailinglist
(linux-media@xxxxxxxxxxxxxxx, no need to subscribe but make sure your
email is normal ascii and not HTML since those are rejected AFAIK)
and Cc Hans de Goede (hdegoede@xxxxxxxxxx) since he maintains
that code.
Regards,
Hans
On 12/11/13 21:29, Brown Patrick-PMH786 wrote:
> Hans,
> My name is pat brown. I work for motorola solutions.
> I am using a 8 megapixel camera and the lib4vl2 library is giving me an error:
>
> libv4l2: error converting / decoding frame data: v4l-convert: error destination buffer too small (16777216 < 23970816)
> VIDIOC_DQBUF: Bad address
>
> v4l-utils-HEAD-4dea4af/lib/libv4l2/libv4l2-priv.h
>
> I have tracked it down to the following:
> /lib/libv4l2/libv4l2-priv.h:#define V4L2_FRAME_BUF_SIZE (4096 * 4096)
>
> When I changed the value to :
> /lib/libv4l2/libv4l2-priv.h:#define V4L2_FRAME_BUF_SIZE (2 * 4096 * 4096)
>
> How can this change be properly integrated. This problem impacts the opencv software package.
> Pat,
> 631 880 1188
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