shmsink freez on default shm-size

[Olivier Crête]

Hi,

On Wed, 2016-12-28 at 13:02 -0800, LC wrote:
> Hello ! 
> 
> I experienced strange behavior with this scenario. 
> I have .m4 file in size of 19Mb. I am pushing those frames to shared
> memory
> and than i run another pipeline to see those images. 
> 
> I use these pipelines : 
> # Sender : gst-launch-1.0 -vv filesrc location=file2.mp4 ! decodebin
> !
> typefind ! socket-path=/dev/shm/file
> # Receiver: gst-launch-1.0 shmsrc socket-path=/dev/shm/file !
> video/x-raw,
> format=Y444, width=1920, height=1080, interlace-mode=progressive,
> pixel-aspect-ratio=1/1, chroma-site=mpeg2, colorimetry=bt709,
> framerate=30/1
> ! videoconvert! ximagesink
> 
> It works for a little time and video freezes. Than i changed the
> shmsink
> shm-size to maximum like this : 
> # Sender : gst-launch-1.0 -vv filesrc location=file2.mp4 ! decodebin
> !
> typefind ! shmsink shm-size=4294967295 socket-path=/dev/shm/file and
> it
> worked. 
> 
> The problem is that i could have large mp4 and that it will freez
> once 4GB
> limit of shmsink is over . 
> 
> Is it possible to use pipeline from file to shmsink with shmsrc ->
> ximagesink ?
> 
> What should i do to solve the bug of freez ? 
> 

Does it really freeze with that super large shm-size? 4GB is probably
too much, you just need it to be big enough for the amount of memory
used at the receiver and sender.

-- 
Olivier Crête
olivier.crete at collabora.com