Colin.Guthr.ie Illegitimi non carborundum

29Jun/092

Configuring audio ports in PulseAudio

As I added support for changing card profiles in PulseAudio, now that pulse supports "ports" it's time for me to get my developer hat on again!

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28Feb/093

Configuring card profiles in PulseAudio

The upcoming 0.9.15 release of PulseAudio will support "card profiles". What in the name of Almighty Bob (where Bob is a deity of questionable existence) is a card profile I hear you all cry. Well in our world of cost savings the majority of sound cards can operating in different but mutually exclusive configurations. For example some devices are capable of outputting 5.1 surround sound, but to do this they use the same jacks as are normally used for sound input, so you cannot record sound from the device when it is playing 5.1 sound.

As expected, information concerning what these capabilities are and under what situation they can be used simultaneously is not supplied to us by the ALSA layer. So to get around this problem,PulseAudio will probe for various configurations for you and provide a handy list which will allow for easy configuration. Sadly there is no GUI to control this. Or rather there was no GUI....

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