During the Desktop Summit, Colin and I discussed how Ubuntu best can ship jack detection patches before they are merged upstream, when these patches require protocol extensions. The suggestion was to "reserve" a protocol version by writing an email here. So, I hereby reserve protocol version 24 to mean the following: Every sink and source port has an additional uint32_t field at the end, with the following meaning: PA_PORT_AVAILABLE_UNKNOWN = 0, /**< This port does not support jack detection. */ PA_PORT_AVAILABLE_NO = 1, /**< This port is not available, likely because the jack is not plugged in. */ PA_PORT_AVAILABLE_YES = 2, /**< This port is available, likely because the jack is plugged in. */ -- David Henningsson, Canonical Ltd. http://launchpad.net/~diwic
