[meta-freescale] gst1.0-fsl-plugin/4.0.2/4.0.3-r0: bug with reconfigure events
Andrew Murray
amurray at embedded-bits.co.uk
Thu Jul 9 11:57:48 PDT 2015
Hello,
I have created a very simple gst1.0 application based on
input-selector-test.c example, modified such that the pipeline looks
like this:
imxv4l2src ! caps ! valve ! imxv4l2sink
The application changes the state of the valve from drop=false to
drop=true after a specified number of seconds. Unfortunately this
results in the following error:
** Message: Valve is now set to drop
0:00:12.083723335 712 0x3ff260 ERROR imxv4l2src
gst1.0-fsl-plugin/4.0.2-r0/gst1.0-fsl-plugins-4.0.2/plugins/v4l2/gstimxv4l2src.c:463:gst_imx_v4l2src_decide_allocation:<src1>
using v4l2 source allocator.
0:00:12.487820001 712 0x3ff260 ERROR imxv4l2
gst1.0-fsl-plugin/4.0.2-r0/gst1.0-fsl-plugins-4.0.2/libs/v4l2_core/gstimxv4l2.c:1429:gst_imx_v4l2_allocate_buffer:
No more v4l2 buffer for allocating.
0:00:12.488049335 712 0x3ff260 ERROR imxv4l2
gst1.0-fsl-plugin/4.0.2-r0/gst1.0-fsl-plugins-4.0.2/libs/v4l2_core/gstimxv4l2.c:1429:gst_imx_v4l2_allocate_buffer:
No more v4l2 buffer for allocating.
0:00:12.492420668 712 0x3ff260 ERROR imxv4l2
gst1.0-fsl-plugin/4.0.2-r0/gst1.0-fsl-plugins-4.0.2/libs/v4l2_core/gstimxv4l2.c:1398:gst_imx_v4l2_find_buffer:
Can't find the buffer 0x766EF508.
0:00:12.492524001 712 0x3ff260 ERROR imxv4l2src
/gst1.0-fsl-plugin/4.0.2-r0/gst1.0-fsl-plugins-4.0.2/plugins/v4l2/gstimxv4l2src.c:586:gst_imx_v4l2src_acquire_buffer:<src1>
Queue buffer 0x75c09db8 failed.
0:00:12.492610335 712 0x3ff260 WARN basesrc
gstreamer1.0/1.4.1-r0/gstreamer-1.4.1/libs/gst/base/gstbasesrc.c:2933:gst_base_src_loop:<src1>
error: Internal data flow error.
0:00:12.492679335 712 0x3ff260 WARN basesrc
gstreamer1.0/1.4.1-r0/gstreamer-1.4.1/libs/gst/base/gstbasesrc.c:2933:gst_base_src_loop:<src1>
error: streaming task paused, reason error (-5)
Got error message
Error: Internal data flow error.
(video:712): GStreamer-CRITICAL **: gst_mini_object_unref: assertion
'mini_object->refcount > 0' failed
0:00:12.493453335 712 0x400ee0 ERROR imxv4l2
gst1.0-fsl-plugin/4.0.2-r0/gst1.0-fsl-plugins-4.0.2/libs/v4
l2_core/gstimxv4l2.c:1398:gst_imx_v4l2_find_buffer: Can't find the
buffer 0x00000000.
Using gst1.0-fsl-plugin/4.0.3-r0 also results in this similar error:
** Message: Valve is now set to drop
0:00:12.386593002 750 0x1eb8460 ERROR imxv4l2
gst1.0-fsl-plugin/4.0.3-r0/gst1.0-fsl-plugins-4.0.3/libs/v4l2_core/gstimxv4l2.c:1452:gst_imx_v4l2_allocate_buffer:
No more v4l2 buffer for allocating.
0:00:12.386899668 750 0x1eb8460 ERROR imxv4l2
gst1.0-fsl-plugin/4.0.3-r0/gst1.0-fsl-plugins-4.0.3/libs/v4l2_core/gstimxv4l2.c:1452:gst_imx_v4l2_allocate_buffer:
No more v4l2 buffer for allocating.
0:00:12.387092668 750 0x1eb8460 ERROR imxv4l2 ERROR:
v4l2 capture: VIDIOC_QBUF: buffer already
queuedgst1.0-fsl-plugin/4.0.3-r0/gst1.0-fsl-plugins-4.0.3/libs/v4l2_core/gstimxv4l2.c:1452:gst_imx_v4l2_allocate_buffer:
No more v4l2 buffer for allocating.
0:00:12.387223335 750 0x1eb8460 ERROR imxv4l2
gst1.0-fsl-plugin/4.0.3-r0/gst1.0-fsl-plugins-4.0.3/libs/v4l2_core/gstimxv4l2.c:1452:gst_imx_v4l2_allocate_buffer:
No more v4l2 buffer for allocating.
0:00:12.455394002 750 0x1eb8460 WARN imxv4l2
gst1.0-fsl-plugin/4.0.3-r0/gst1.0-fsl-plugins-4.0.3/libs/v4l2_core/gstimxv4l2.c:1686:gst_imx_v4l2_queue_gstbuffer:
new buffer (0x75c09e58) use the same memblk(0x75004a64) with queued
buffer(0x75c09958)
0:00:12.455493668 750 0x1eb8460 WARN imxv4l2
gst1.0-fsl-plugin/4.0.3-r0/gst1.0-fsl-plugins-4.0.3/libs/v4l2_core/gstimxv4l2.c:1689:gst_imx_v4l2_queue_gstbuffer:
gstbuffer(0x75c09958) for (0x7696c750) not dequeued yet but queued
again, index(1975556440).
0:00:12.461249002 750 0x1eb8460 ERROR imxv4l2
gst1.0-fsl-plugin/4.0.3-r0/gst1.0-fsl-plugins-4.0.3/libs/v4l2_core/gstimxv4l2.c:1571:imx_v4l2_do_queue_buffer:
queue v4l2 buffer failed.
0:00:12.461293335 750 0x1eb8460 ERROR imxv4l2
gst1.0-fsl-plugin/4.0.3-r0/gst1.0-fsl-plugins-4.0.3/libs/v4l2_core/gstimxv4l2.c:1693:gst_imx_v4l2_queue_gstbuffer:
queue gstbuffer (0x75c09e58) failed.
(video:750): GStreamer-CRITICAL **: gst_buffer_get_meta: assertion
'buffer != NULL' failed
(video:750): GStreamer-CRITICAL **: gst_buffer_add_meta: assertion
'buffer != NULL' failed
I believe the change in 'drop' state results in a reconfigure event
reaching imxv4l2src which it doesn't appear to handle correctly.
Replacing imxv4l2src with videotestsrc results in the expected
behaviour when the valve is set to drop.
Furthermore, when modifying gstimxv4l2src.c to override the default
GST_EVENT_RECONFIGURE event such that it only clears the event
(gst_pad_check_reconfigure) in then working as expected.
This appears to be a bug - has this been seen before or already fixed?
Are there any suggestions for the correct way of fixing this?
Thanks,
Andrew Murray
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