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Solution for Pygame and Touchscreens on Raspbian Buster OS

Posted: Tue Aug 27, 2019 4:59 am
by peppy.player
The current version of the Pygame library leverages libsdl1.2. The version of the libsdl1.2 on Raspbian Buster OS has the issues with touchscreens. One of the solutions is to build that library with proper touchscreen support. This solution was suggested by Gerhard the author of NewtronRadio https://forum-raspberrypi.de/forum/thre ... tron-radio On his behalf I'm creating this post hoping that it will be also helpful for other developers.

You can either download the patched libsdl1.2 package from the Gerhard's Dropbox account:
https://www.dropbox.com/s/0tkdym8ojhcmb ... _armhf.deb
and then install the package:

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wget https://www.dropbox.com/s/0tkdym8ojhcmbu2/libsdl1.2debian_1.2.15+veloci1-1_armhf.deb
sudo dpkg -i libsdl1.2debian_1.2.15+veloci1-1_armhf.deb
sudo apt-get -f install
Or you can build that library yourself by following these steps:

1. Install libts-dev

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sudo apt install libts-dev

2. Get the required packages

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wget http://deb.debian.org/debian/pool/main/libs/libsdl1.2/libsdl1.2_1.2.15+dfsg2.orig.tar.gz
wget http://deb.debian.org/debian/pool/main/libs/libsdl1.2/libsdl1.2_1.2.15+dfsg2-4.debian.tar.xz

3. Extract the packages

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tar xvzf libsdl1.2_1.2.15+dfsg2.orig.tar.gz
cd SDL-1.2.15
tar xvfJ ../libsdl1.2_1.2.15+dfsg2-4.debian.tar.xz

4. Install libSDL dependencies (can be found in debian/control)

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sudo apt install libx11-dev libxext-dev libxt-dev libxv-dev x11proto-core-dev libpulse-dev libgl1-mesa-dev libasound2-dev libcaca-dev libglu1-mesa-dev

5. Install packages for building .deb-packages

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sudo apt install build-essential debhelper

6. Add libts-dev to the "Build-Depends:"-section and to the "Depends:"-section for "Package: libsdl1.2-dev" in /home/pi/SDL-1.2.15/debian/control

7. Remove the "opts="-line in /home/pi/SDL-1.2.15/debian/watch so that it looks like this:

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# run "uscan --report" to check or "gpb import-orig --uscan" to update
version=4
https://www.libsdl.org/release/SDL-([\d.]+)\.tar\.(?:gz|bz2|xz|lzma)
8. Edit /home/pi/SDL-1.2.15/debian/changelog (add to top)

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libsdl1.2 (1.2.15+veloci1-1) unstable; urgency=medium

  * re-add support for libts
  
 -- veloci <veloci@gmx.de>  Thu, 11 Jul 2019 11:12:13 +0200
 
9. Rename libsdl1.2_1.2.15+dfsg2.orig.tar.gz to libsdl1.2_1.2.15+veloci1.orig.tar.gz

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mv /home/pi/SDL-1.2.15/libsdl1.2_1.2.15+dfsg2.orig.tar.gz /home/pi/SDL-1.2.15/libsdl1.2_1.2.15+veloci1.orig.tar.gz

10. Build the whole thing (in folder /home/pi/SDL-1.2.15)

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debian/rules clean
dpkg-source -b .
debian/rules build

11. Create the packages (in folder /home/pi/SDL-1.2.15)

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fakeroot debian/rules binary
12. Install new package

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cd ..
sudo dpkg -i libsdl1.2debian_1.2.15+veloci1-1_armhf.deb
Many thanks to Gerhard for the suggested solution!

Re: Solution for Pygame and Touchscreens on Raspbian Buster OS

Posted: Fri Sep 06, 2019 2:52 pm
by JKOORNNEEF
I have serious problems with your solution on my configuration: Buster, RPi B+, Linux 4.19.58+, Python 2.7.16, Pygame 1.9.4.post1, Watterott 2.8".
The initial installation of your precompiled libsdl1.2debian_1.2.15+veloci1-1_armhf.deb package failed due to the absence of libts0. After installing libts0_1.19-1_armhf.deb a rerun of your .deb completed.
But now, my Python script exits from Python with the "Illegal instruction" message directly after "import pygame".
I have been struggling with getting the touch capability to work for weeks, and would like your solution to work. Can you help?

Re: Solution for Pygame and Touchscreens on Raspbian Buster OS

Posted: Sun Sep 15, 2019 12:31 pm
by veloci
What does "dpkg -s libsdl1.2debian" show?