[Bluez-devel] C program for capturing AnswerRequested signal

[Bluez-devel] C program for capturing AnswerRequested signal

[Pedro Vivancos]

[-- Attachment #1.1: Type: text/plain, Size: 2024 bytes --]

Dear friends,

I wrote a C program to capture the "AnswerRequested" signal from a bluetooth
headset but it doesn't work. It is based on the DeviceDiscover Howto of the
wiki audio section but it doesn't do anything.

Can you help me to find the error?

Thanks in advance

/* Build with: */
/* glib-genmarshal --prefix=marshal marshal.list --header > marshal.h */
/* glib-genmarshal --prefix=marshal marshal.list --body > marshal.c */
/* gcc `pkg-config --libs --cflags glib-2.0 dbus-1 dbus-glib-1` bluetooth.c
marshal.c -o bluetooth */

#include <stdlib.h>
#include <dbus/dbus.h>
#include <dbus/dbus-glib.h>
#include <glib-object.h>

#include "marshal.h"

static GMainLoop *loop = NULL;

static void answer_requested(DBusGProxy *object, gpointer user_data)
{
        g_print("Signal: AnswerRequested()\n");
}


static void run_mainloop (void)
{
        GMainContext *ctx;

        ctx = g_main_loop_get_context (loop);

        while (g_main_context_pending (ctx))
                g_main_context_iteration (ctx, FALSE);
}

int main(int argc, char* argv[])
{
        GError *error = NULL;
        DBusGConnection * bus = NULL;
        DBusGProxy * obj = NULL;

        g_type_init();
        g_log_set_always_fatal (G_LOG_LEVEL_WARNING);
        loop = g_main_loop_new (NULL, FALSE);

        bus = dbus_g_bus_get(DBUS_BUS_SYSTEM, &error);
        if (error != NULL)
        {
                g_printerr("Connecting to system bus failed: %s\n",
error->message);
                g_error_free(error);
                exit(EXIT_FAILURE);
        }

        // o probar con /org/bluez/audio
        obj = dbus_g_proxy_new_for_name(bus, "org.bluez",
"00:16:94:03:60:1B", "org.bluez.audio.Headset");

        dbus_g_proxy_add_signal(obj, "AnswerRequested", G_TYPE_INVALID);
        dbus_g_proxy_connect_signal(obj, "AnswerRequested",
G_CALLBACK(answer_requested), bus, NULL);

        run_mainloop ();
        dbus_g_connection_flush (bus);
        g_main_loop_run (loop);
        dbus_g_connection_unref(bus);

        return 0;
}

[-- Attachment #1.2: Type: text/html, Size: 3528 bytes --]

[-- Attachment #2: Type: text/plain, Size: 325 bytes --]

-------------------------------------------------------------------------
This SF.net email is sponsored by the 2008 JavaOne(SM) Conference 
Register now and save $200. Hurry, offer ends at 11:59 p.m., 
Monday, April 7! Use priority code J8TLD2. 
http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone

[-- Attachment #3: Type: text/plain, Size: 164 bytes --]

_______________________________________________
Bluez-devel mailing list
Bluez-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/bluez-devel

Re: [Bluez-devel] C program for capturing AnswerRequested signal

[Luiz Augusto von Dentz]

Please install dbus-glib documentation and take a look, some parameters of
dbus_g_proxy_new_for_name are wrong.

You have to call ActivateService then you receive the bus name of the servi=
ce,
the object path is normally /org/bluez/<sevice name>. At this point it shou=
ld
be possible to connect to service signals.

ps: After 3.28 it is not really necessary to call ActivateService anymore, =
the
bus name is actually the same as hcid since service are all plugins now.

-- =

Luiz Augusto von Dentz
Engenheiro de Computa=E7=E3o

-------------------------------------------------------------------------
This SF.net email is sponsored by the 2008 JavaOne(SM) Conference =

Register now and save $200. Hurry, offer ends at 11:59 p.m., =

Monday, April 7! Use priority code J8TLD2. =

http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/java=
one
_______________________________________________
Bluez-devel mailing list
Bluez-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/bluez-devel