hi everyone, Here where I'm stuck : In my audio app, for a new functionality I would like to control volume. Now I'm trying to get a response (dbus signal) when user is changing volume with button (physical). My app has mpris2 control, I monitoring a read to the volume property (of org.mpris.MediaPlayer2.Player ) but never a write. I tried to look for a propertiesChanged in org.freedesktop.DBus.Properties, I'm seeing response in playback status, position, metadata, etc.. but never from volume change.
Right now, I'm looking into pulseaudio with com.meego.mainvolume2 https://wiki.merproject.org/wiki/Nemo/Audio/MainVolume I connect to pulse, I read current volume (CurrentStep), I can see it's changing between my tests, but my slot to the StepsUpdated signal never been called. Here my current code : //****************************************** QDBusConnection bus = QDBusConnection::sessionBus(); QDBusMessage call = QDBusMessage::createMethodCall("org.PulseAudio1", "/org/pulseaudio/server_lookup1", "org.freedesktop.DBus.Properties", "Get" ); call << "org.PulseAudio.ServerLookup1" << "Address"; QDBusReply<QDBusVariant> r = bus.call(call); if (r.isValid()) { pulse = new QDBusConnection(QDBusConnection::connectToPeer( r.value().variant().toString(), "org.PulseAudio1")); //****** this is working **** call = QDBusMessage::createMethodCall("", "/com/meego/mainvolume2", "org.freedesktop.DBus.Properties", "Get"); call << "com.Meego.MainVolume2" << "CurrentStep"; qDebug() << "CurrentStep : " << pulse->call(call).value().variant().toUInt(); //***** connect, but never raise a callback **** //***** doing something similar with org.nemomobile.voicecall.VoiceCall and it's working fine pulse->connect("", "/com/meego/mainvolume2", "com.Meego.MainVolume2", "StepsUpdated", this, SLOT(StepsUpdated(uint,uint))); } // *** my public slot code, never getting an answer void modeNuitService::StepsUpdated(uint StepCount, uint CurrentStep) { qDebug() << "StepsUpdated " << StepCount << " " << CurrentStep; } //****************************************** What do you think ? bad argument, bad method signature or just bad solution ?
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