Hi,
On 09/29/2014 11:23 PM, Nicolas Dufresne wrote:
This was initially reported to GStreamer project:
https://bugzilla.gnome.org/show_bug.cgi?id=737521
We track this down to be a regression introduced in v4l2-utils from version
1.4.0. In recent GStreamer we make sure the buffer.length field (retreived
with QUERYBUF) is bigger or equal to the expected sizeimage (as obtained in
S_FMT). This is to fail cleanly and avoid buffer overflow if a driver (or
libv4l2) endup doing a short allocation. Since 1.4.0, this field is always 0
if an emulated format is selected.
Reverting patch 10213c brings back normal behaviour:
http://git.linuxtv.org/cgit.cgi/v4l-utils.git/commit/?id=10213c975afdfcc90aa7de39e66c40cd7e8a57f7
This currently makes use of any emulated format impossible in GStreamer.
v4l2-utils 1.4.0 is being shipped at least in debian/unstable at the moment.
Oops, thanks for the bug report.
I've created a 3 patch patch-set fixing this, which I'll send right after
this mail. The actual fix is in the 2nd patch, the first patch and third
patches fix 2 unrelated bugs which I noticed while working on this.
Regards,
Hans
--
To unsubscribe from this list: send the line unsubscribe linux-media in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
