Dynamic image overlay

[kususe]

I wanna realize a dynamic image overlay.
I think the best way to perform this is using coglogoinsert plugin.
The idea is creating an image saving it with matlab and displaying it on screen, repeating this operatition for an amount of time.
I imagine this idea could cause some accessing problem to the same file by two different thread (my one and the plugin one).
So I decided to create two images: in the first step I save the first figure displaying it; in the second I save the second figure, displaying it; again I save the first one, displaying it and then the second one displaying it.
but it causes a segfault.
Can you have suggestions?

Thanks in advance,
K.

[Zhang, Zheng]

u still have the access confliction, try to use lock before operation.

-Zheng

-----Original Message-----
From: gstreamer-devel-bounces+zheng.zhang=[hidden email] [mailto:gstreamer-devel-bounces+zheng.zhang=[hidden email]] On Behalf Of kususe
Sent: Thursday, March 29, 2012 2:26 AM
To: [hidden email]
Subject: Dynamic image overlay

I wanna realize a dynamic image overlay.
I think the best way to perform this is using coglogoinsert plugin.
The idea is creating an image saving it with matlab and displaying it on screen, repeating this operatition for an amount of time.
I imagine this idea could cause some accessing problem to the same file by two different thread (my one and the plugin one).
So I decided to create two images: in the first step I save the first figure displaying it; in the second I save the second figure, displaying it; again I save the first one, displaying it and then the second one displaying it.
but it causes a segfault.
Can you have suggestions?

Thanks in advance,
K.



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[kususe]

How to use it?
I tried to use Portalocker. But it's used to write on a file.
How to perform this in my case?