[meta-freescale] Gstreamer pipeline problem

[Chris Tapp]

On 11 Jul 2013, at 09:39, Thomas Senyk wrote:

> On Wednesday, 10 July, 2013 20:53:58 Chris Tapp wrote:
>> On 10 Jul 2013, at 20:19, Chris Tapp wrote:
>>> I've got an application which uses playbin2 to capture video. The pipeline
>>> is of the form:
>>> 
>>> playbin2 uri=... video-sink="queue2 ! videoscale ! video/x-raw-rgb,
>>> pixel-aspect-ratio=1/1, width=<capture-width>, height=<capture-height> !
>>> fakesink"
>>> 
>>> I then get the "frame" property from the pipeline and use this to grab the
>>> latest frame.
>>> 
>>> This works on my development system (Ubuntu 11.10) and a Cedar Trail /
>>> Yocto system, but the pipeline fails on the Wandboard Quad. I think this
>>> is related to:
>>> 
>>> 0:00:13.028151336  1349 0x4442d520 WARN           basetransform
>>> /media/SSD-RAID/build-danny-wandboard/tmp/work/armv7a-vfp-neon-poky-linux
>>> -gnueabi/gstreamer/0.10.36-r2/gstreamer-0.10.36/libs/gst/base/gstbasetrans
>>> form.c:1304:gst_base_transform_setcaps:<videoscale0x2ab820> transform
>>> could not transform video/x-raw-yuv, width=(int)854, height=(int)480,
>>> framerate=(fraction)24/1, format=(fourcc)I420, interlaced=(boolean)false
>>> in anything we support
>>> 
>>> I added an ffmpegcolorspace element betwween the queue2 and the videoscale
>>> to get round this and the pipeline now builds, but only a few frames are
>>> captured. There are different diagnostics showing:
>>> 
>>> 0:00:02.881403000  1361   0x28da60 WARN                  vpudec
>>> vpudec.c:914:gst_vpudec_core_create_and_register_frames: Allocate
>>> Internal framebuffers!!!! Message Callback : Element playbin0x250b68
>>> changed state from READY to PAUSED. 0:00:03.237675000  1361   0x28da60
>>> WARN                  vpudec vpudec.c:1578:gst_vpudec_chain: Got no frame
>>> buffer message, return 0x89, 8 frames in displaying queue!!
>>> 0:00:03.242324334  1361   0x28da60 WARN                  vpudec
>>> vpudec.c:1578:gst_vpudec_chain: Got no frame buffer message, return 0x89,
>>> 8 frames in displaying queue!!
>>> 
>>> <lots of repeats>
>>> 
>>> 0:00:08.499914334  1382   0x28d860 WARN                  vpudec
>>> vpudec.c:1655:gst_vpudec_chain: Retry too many times, maybe BUG!!
>>> 0:00:08.500784667  1382   0x28d860 WARN                  vpudec
>>> vpudec.c:1578:gst_vpudec_chain: Got no frame buffer message, return 0x88,
>>> 8 frames in displaying queue!!
>>> 
>>> <lots of repeats>
>>> 
>>> Message Callback : Element playbin0x250aa0 changed state from PAUSED to
>>> PLAYING. 0:00:09.253202667  1382   0x28d860 WARN                  vpudec
>>> vpudec.c:1578:gst_vpudec_chain: Got no frame buffer message, return 0x88,
>>> 8 frames in displaying queue!!
>>> 
>>> 0:00:13.364523335  1460   0x142ec0 WARN             mfw_v4lsink
>>> mfw_gst_v4l_buffer.c:435:mfw_gst_v4l2_new_buffer: Try new buffer failed,
>>> ret 2 No such file or directory queued 0
>>> 
>>> 
>>> The "Message Callback" events are my own logging to try and see what's
>>> happening in my app.
>>> 
>>> Is this something I'm doing wrong, or are these messages a real issue
>>> somewhere?
>> This is when playing a .webm. The results for an .flv are as expected.
> 
> is it the same when you use v4l2 sink instead of fakesink?
> Is playbin (without defining the pipeline) behaving the same?

I've not got that in the build at the moment - I'll add it in and give it a try.

I was going to try v4l2 out on my development system as I've not used it before, but I can't even get:

gst-launch videotestsrc ! v4l2sink

to work as there's no /dev/video1 ! Does anyone know where I can find instructions on how to get v4l2 working under Ubuntu 12.04 for a radeon HD 5450 card? Google has not been my friend ;-)

>> 
>> Chris Tapp
>> 
>> opensource at keylevel.com
>> www.keylevel.com
>> 
>> 
>> 
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Chris Tapp

opensource at keylevel.com
www.keylevel.com