What's this?

Eventually this repository will contain C and Python code I'm running on my Pi Zero W to stream music from Spotify to a bluetooth speaker. Since I bought a 2.8" capacitive touch display from Adafruit I wanted to have a custom UI streamlined for use with the tiny (320x200) display resolution...and since I'm usually looking for a challenge I decided to write a tiny UI library in C that uses SDL 1.2 & tslib (https://github.com/kergoth/tslib) to render a UI to the framebuffer.

Why use the outdated SDL1.2 ?

The Adafruit website said that the display can only be used via the framebuffer device and also mentioned that SDL2 doesn't work properly.

Why use tslib and not the touch support from SDL ?

Touch support in SDL1.2 seems to be flaky.

How do you play music on the Raspi ?

I'm going to use the excellent mopidy (https://www.mopidy.com/) framework along with the nice python-mpd2 (https://github.com/Mic92/python-mpd2) module.

How do you interface with Spotify?

I'm going to use the mopidy-spotify plugin

Requirements

Building the C part

You'll need the usual suspects (gcc >=5.4.0,make,ld,etc) and the following packages plus their header files:

• cmake >= 3.5.1
• libsdl 1.2.15
• libsdl-gfx 1.2-5
• libsdl-ttf2.0-0

For the Python part

• python 2.7 (yes, I'm too lazy to learn Python 3.)
• pip install python-mpd2
• mopidy
• mopidy-spotify

Current status

• I'm still developing the C library on my desktop only so the tslib support is not implemented yet. For the time being I'm using the mouse for UI testing.
• The UI library currently only supports very crude click buttons and scrollable list views.
• Apart from a proof-of-concept I didn't start working on the Python code to integrate with mopidy

To do

• A lot...