Return-Path: Content-Type: text/plain; charset="iso-8859-1" Date: Wed, 02 Sep 2009 13:52:13 +0200 From: "Peter Kornatowski" Message-ID: <20090902115213.61720@gmx.net> MIME-Version: 1.0 Subject: error in setting speakergain in own application To: linux-bluetooth@vger.kernel.org Sender: linux-bluetooth-owner@vger.kernel.org List-ID: Hi, I have a linux application where i do some stuff with bluez (4.50) over dbus. I have 3 headsets with which I test (Jabra BT530, Sora B-Speech, official PS3-BT headset) and on all I get the same behaviour/error. I would like to set the speakergain of a headset from my linux-app. I tried two methods: a) call the method "SetProperty": GValue value; value.g_type = 0; // also tried: value = { 0 }; guint16 ugain = (guint16)gain; // also tried: guint ugain = (guint)gain; g_value_init(&value, G_TYPE_UINT); g_value_set_uint(&value, ugain); dbus_g_proxy_call(proxy, "SetProperty", &error, G_TYPE_STRING, "SpeakerGain", G_TYPE_VALUE, &value, G_TYPE_INVALID, G_TYPE_INVALID); g_value_unset(&value); >From error->message I always get: Invalid arguments in method call I get the same error when trying to set it through d-feet (but probably because d-feet can't set a value type?). b) call the method "SetSpeakerGain" (it is deprecated, but the deprecated signal "SpeakerGainChanged" still works, too): guint16 ugain = (guint16)gain; // also tried: guint ugain = (guint)gain; dbus_g_proxy_call(proxy, "SetSpeakerGain", &err, G_TYPE_UINT, ugain, G_TYPE_INVALID, G_TYPE_INVALID); >From error->message I always get: Method "SetSpeakerGain" with signature "u" on interface "org.bluez.Headset" doesn't exist Calling this method with d-feet works fine, the new value is transferred to the headset. Does anyone have any idea how this could work? Thanks! Greetings, Peter -- GRATIS f?r alle GMX-Mitglieder: Die maxdome Movie-FLAT! Jetzt freischalten unter http://portal.gmx.net/de/go/maxdome01