On Mon, 2014-06-02 at 13:48 +0200, Greg Knoll wrote: > On Fri, May 30, 2014 at 3:44 PM, Tanu Kaskinen > <tanu.kaskinen at linux.intel.com> wrote: > > (Added pulseaudio-discuss back to cc.) > > > > On Fri, 2014-05-30 at 15:24 +0200, Greg Knoll wrote: > >> Thank you for your response, > >> > >> > >> Yes, I did follow that tutorial. I didn't state it correctly in my > >> question, but I do only use the session bus to get the server > >> address. Then I use > >> > >> > >> *conn = dbus_connection_open(serverAddress, &err); > >> > >> to get the DBusConnection object and use this to make calls. > > > > Ok, I suppose this is not the problem then. Back to the original > > question: > > > >> However, where/how do I listen for the signal? I also tried setting a > >> dbus match rule: > >> dbus_bus_add_match(system_bus, "type='signal',interface='org.PulseAudio.Core1'", &err); > > > > You don't need to add a match rule (trying to do so won't do anything > > useful, because the match rules are managed by the bus daemon, and in a > > peer-to-peer connection there's no bus daemon involved at all). Do you > > register a message filter with dbus_connection_add_filter()? If not, > > then that's the problem. > > > > By the way, please don't top-post on mailing lists, and also plain text > > messages are preferred over HTML. > > > > -- > > Tanu > > > > > > Sorry about the top post. > > I did not register a dbus_connection_add_filter(). I have added a > DBusHandlerResult function based on the examples here: > https://kernel.googlesource.com/pub/scm/bluetooth/bluez/+/utils-3.4/hcid/dbus-error.c > and > http://lists.freedesktop.org/archives/dbus/2003-September/000468.html > > The second one uses an object DBusMessageHandler, which I think is > from glib/dbus-glib. Maybe I'm wrong there. My function looks like > this: > > DBusHandlerResult listen_to_core_Handler(DBusConnection *connection, > DBusMessage *message, void *user_data) > > { > > debug_print("Message received from Pulse Core.\n"); > > debug_print("Signature:%s\n", dbus_message_get_signature(message)); > > } > > and I add a call to dbus_connection_add_filter() in my main thread using: > > dbus_connection_add_filter(PA_bus, listen_to_core_Handler, NULL, NULL); > > > Still nothing. I should also say that the signal name string I'm > using is "org.PulseAudio.Core1.NewModule". > > Thanks for all the help so far. How do you dispatch incoming messages? Do you integrate the D-Bus connection with some event loop, or do you manually call dbus_connection_read_write_dispatch() in a loop or something similar? -- Tanu
