omxiv | OpenMax image viewer for the Raspberry Pi
kandi X-RAY | omxiv Summary
kandi X-RAY | omxiv Summary
OpenMax image viewer for the Raspberry Pi
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QUESTION
In my program I am writing menus direct to the framebuffer on a Raspberry Pi. This program can play videos with omxplayer and call another program to display jpeg-pictures with omxiv. If omxplayer runs before omxiv, the menus becomes invisible afterwards, and I am not able to write to the framebuffer again before I play a video with omxplayer once more. It is no help in restarting the program.
A simple example is shown here. The program draws a blue rectangle on a green background, plays a wideo and then displays an image. I had expected a blue rectangle drawn at last, but it does nt happen. Next time the program is run, the rectangle is invisible. If I play a video after omxiv, everything is OK.
Has user pi lost the permission to write to the framebuffer?
...ANSWER
Answered 2019-Nov-29 at 18:24I solved the problem myself. Omitting the omxplayer's -b option (--blank), solves the problem:
QUESTION
I want to create an image in PILLOW and show it on the screen on the Raspberry Pi with for example omxiv direct from memory without saving it to the memory card, something like this:
Python 2.7:
...ANSWER
Answered 2019-Nov-09 at 14:09The easiest way to do this is to make sure your /tmp
filesystem is mounted on tmpfs
which is purely memory-based and therefore is not written to your SD card. Note that means that the contents are lost on each reboot.
So, you need to become root
and use your favourite editor to edit /etc/fstab
, in my case that would be:
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