FM Radio in Rhythmbox – The Code
Previously, I posted about the FM radio plugin I was working on. I just posted the code to bug 168735. A few notes about the implementation:
- The code only supports Video4Linux 2 radio tuners (since that’s the interface my device supports, and the V4L1 compatibility layer doesn’t work for it). It should be possible to port it support both protocols if someone is interested.
- It does not pass the audio through the GStreamer pipeline. Instead, you need to configure your mixer settings to pass the audio through (e.g. unmute the Line-in source and set the volume appropriately). It plugs in a GStreamer source that generates silence to work with the rest of the Rhythmbox infrastructure. This does mean that the volume control and visualisations won’t work
- No properties dialog yet. If you want to set titles on the stations, you’ll need to edit rhythmdb.xml directly at the moment.
- The code assumes that the radio device is /dev/radio0.
Other than that, it all works quite well (I’ve been using it for the last few weeks).
Development
I developed this plugin in Bazaar using Jelmer‘s bzr-svn plugin. It produces a repeatable import, so I should be able to cross merge with anyone else producing branches with it.
It is also possible to use bzr-svn to merge Bazaar branches back into the original Subversion repository through the use of a lightweight checkout.
For anyone wanting to play with my Bazaar branch, it is published in Launchpad and can be grabbed with the following command:
bzr branch lp:~jamesh/rhythmbox/fmradio rhythmbox