[Bug 739771] v4l2src allocator fails

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=739771
  GStreamer | gst-plugins-good | 1.4.4

--- Comment #7 from Sudhir Kesti <vndkst at yahoo.com> 2014-11-10 07:56:24 UTC ---
Created an attachment (id=290307)
 --> (https://bugzilla.gnome.org/attachment.cgi?id=290307)
Log Files

Thank you very much for the reply.

I have attached log files of below given pipeline for Gstreamer 1.2.2 and
1.4.4.

GST_DEBUG="v4l2*:7" gst-launch-1.0 v4l2src ! video/x-raw,width=720,height=576 !
checksumsink

File info:
v4l2src_1_2_2.txt > gstreamer 1.2.2 
v4l2src_1_4_4.txt > gstreamer 1.4.4 

My understanding after going through the log files(I may be wrong), In 1.2.2
buffer type is configured as MMAP and it is successful, but in 1.4.4
GST_V4L2_ALLOCATOR_PROBE fails to probe allocator type MMAP and throws the
following warning

v4l2allocator
gstv4l2allocator.c:651:gst_v4l2_allocator_new:<v4l2src0:pool:src:allocator>
Could not probe supported memory type, assuming MMAP is supported, this is
expected for older drivers not  yet ported to videobuf2 framework.

(Same warning is marked as error in 1.4.1).

 >  1. Try and fix the format, tell me if it works, give me the trace if it
doesn't.
  Could you please elaborate on this. What you mean by format?? 
  Attached log files are without any source code modification in 1.4.4.

 About the device driver.
 Device driver supports videobuf2. I am collecting additional data on this.

 Thanks,
 ~ Sudhir

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