v4l2src allocator fails

[Nicolas Dufresne]

Sudhir,

see my replay on your bug report. And yes, USERPTR, DMABUF and DMABUF 
Importation is now supported through manual setting. That only works if 
you disable libv4l2 though.

Nicolas

Le 2014-11-07 05:49, Sudhir a écrit :
> Hi All,
>
> Recently I migrated from Gstreamer 1.2.2 to Gstreamer 1.4.4.
>
> I am facing problem with v4l2src. v4l2src working in 1.2.2, but in 1.4.4
> below given pipeline throwing errors.
>
> gst-launch v4l2src ! checksumsink --gst-debug=3
>
> WARN                    v4l2
> gstv4l2object.c:1604:gst_v4l2_object_add_aspect_ratio:<v4l2src0> Failed to
> probe pixel aspect ratio with VIDIOC_CROPCAP: Invalid argument
> WARN           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
> WARN                    v4l2
> gstv4l2bufferpool.c:995:gst_v4l2_buffer_pool_poll:<v4l2src0> error: poll
> error 1: Invalid argument (22)
> WARN                 v4l2src gstv4l2src.c:749:gst_v4l2src_create:<v4l2src0>
> error: Failed to allocate a buffer
> WARN                 basesrc gstbasesrc.c:2980:gst_base_src_loop:<v4l2src0>
> error: Internal data flow error.
> ERROR: from element /GstPipeline:pipeline0/GstV4l2Src:v4l2src0: Could not
> read from resource.
> WARN                 basesrc gstbasesrc.c:2980:gst_base_src_loop:<v4l2src0>
> error: streaming task paused, reason error (-5)
>
> gstv4l2allocator.c:776:gst_v4l2_allocator_stop:<v4l2src0:pool:src:allocator>
> error releasing buffers buffers: Invalid argument
>
> In source code,
> gst_v4l2_allocator_new function, allocator probe is happening only for
> GST_V4L2_IO_MMAP, USERPTR and DMABUF.. Probe is not happening for RW,
> USERPTR, DMABUF IO mode.
>
> Does new v4lsrc supports RW, USERPTR, DMABUF IO modes?
> OR
> Am I missing some thing while configuring source element?
>
> ~ Sudhir
>
>
>
> --
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