No subject

webcam_source_bin and write my own GStreamer sink if I want access to the
webcam... Unfortunately I'm new to GLib, GObjects and GStreamer, but I've
been reading up on it for a couple of days now and have successfully
modified and compiled Cheese (If it still can be called that) without
warnings, errors or any GUI dependencies (GTK, GDK, etc.). However, it won't
execute as I had hoped. I have further removed as much as possible of the
code, includes and linked libraries to narrow down the possible sources of
error without changing the error I get. Compiling and running Cheese without
modification works flawlessly.

To reproduce the error, I compile my modified cheese.c with:

gcc -pthread -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include
-I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include -g -Wall -c -o cheese.o
cheese.c
gcc -g -O2 -Wall -o cheese cheese.o -pthread -ldbus-glib-1
-lgstinterfaces-0.10

And this is my current cheese.c:

---------- cheese.c ----------
#include <dbus/dbus-glib-bindings.h>
#include <stdio.h>
#include <glib/gi18n.h>

G_BEGIN_DECLS

typedef struct {
  GObjectClass parent_class;
  DBusGConnection *connection;
} CheeseDbusClass;

typedef struct _CheeseDbus {
  GObject parent;
} CheeseDbus;

#define CHEESE_TYPE_DBUS (cheese_dbus_get_type ())
#define CHEESE_DBUS_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj),
CHEESE_TYPE_DBUS, CheeseDbusClass))

GType       cheese_dbus_get_type (void);
CheeseDbus *cheese_dbus_new (void);

void     cheese_dbus_set_window (gpointer);
gboolean cheese_dbus_notify (void);

G_END_DECLS

G_BEGIN_DECLS

#define g_marshal_value_peek_pointer(v)  (v)->data[0].v_pointer

extern void dbus_glib_marshal_cheese_dbus_BOOLEAN__POINTER (GClosure
*closure,
                                                            GValue
*return_value,
                                                            guint
n_param_values,
                                                            const GValue
*param_values,
                                                            gpointer
invocation_hint,
                                                            gpointer
marshal_data);
void
dbus_glib_marshal_cheese_dbus_BOOLEAN__POINTER (GClosure     *closure,
                                                GValue       *return_value
G_GNUC_UNUSED,
                                                guint
n_param_values,
                                                const GValue *param_values,
                                                gpointer
invocation_hint G_GNUC_UNUSED,
                                                gpointer      marshal_data)
{
  typedef gboolean (*GMarshalFunc_BOOLEAN__POINTER) (gpointer     data1,
                                                     gpointer     arg_1,
                                                     gpointer     data2);
  register GMarshalFunc_BOOLEAN__POINTER callback;
  register GCClosure *cc = (GCClosure*) closure;
  register gpointer data1, data2;
  gboolean v_return;

  g_return_if_fail (return_value != NULL);
  g_return_if_fail (n_param_values == 2);

  if (G_CCLOSURE_SWAP_DATA (closure))
    {
      data1 = closure->data;
      data2 = g_value_peek_pointer (param_values + 0);
    }
  else
    {
      data1 = g_value_peek_pointer (param_values + 0);
      data2 = closure->data;
    }
  callback = (GMarshalFunc_BOOLEAN__POINTER) (marshal_data ? marshal_data :
cc->callback);

  v_return = callback (data1,
                       g_marshal_value_peek_pointer (param_values + 1),
                       data2);

  g_value_set_boolean (return_value, v_return);
}

G_END_DECLS

static const DBusGMethodInfo dbus_glib_cheese_dbus_methods[] = {
  { (GCallback) cheese_dbus_notify,
dbus_glib_marshal_cheese_dbus_BOOLEAN__POINTER, 0 },
};

const DBusGObjectInfo dbus_glib_cheese_dbus_object_info = {
  0,
  dbus_glib_cheese_dbus_methods,
  1,
"org.gnome.Cheese\0notify\0S\0\0\0",
"\0",
"\0"
};

gpointer window_pointer;

G_DEFINE_TYPE (CheeseDbus, cheese_dbus, G_TYPE_OBJECT);

void cheese_dbus_set_window (gpointer data) {
  if (data != NULL)
    window_pointer = data;
}

gboolean cheese_dbus_notify () {
  return TRUE;
}

void cheese_dbus_class_init (CheeseDbusClass *klass) {
  GError *error = NULL;

  /* Init the DBus connection, per-klass */
  klass->connection = dbus_g_bus_get (DBUS_BUS_SESSION, &error);
  if (klass->connection == NULL) {
    g_warning ("Unable to connect to dbus: %s", error->message);
    g_error_free (error);
    return;
  }

  dbus_g_object_type_install_info (CHEESE_TYPE_DBUS,
&dbus_glib_cheese_dbus_object_info);
}

void cheese_dbus_init (CheeseDbus *server) {
  CheeseDbusClass *klass = CHEESE_DBUS_GET_CLASS (server);

  /* Register DBUS path */
  dbus_g_connection_register_g_object (klass->connection,
"/org/gnome/cheese", G_OBJECT (server));
}

CheeseDbus* cheese_dbus_new () {
  CheeseDbus      *server;
  GError          *error = NULL;
  DBusGProxy      *proxy;
  guint            request_ret;
  CheeseDbusClass *klass;

  server = g_object_new (CHEESE_TYPE_DBUS, NULL);

  klass = CHEESE_DBUS_GET_CLASS (server);

  /* Register the service name, the constant here are defined in
dbus-glib-bindings.h */
  proxy = dbus_g_proxy_new_for_name (klass->connection, DBUS_SERVICE_DBUS,
DBUS_PATH_DBUS, DBUS_INTERFACE_DBUS);

  if (!org_freedesktop_DBus_request_name (proxy, "org.gnome.Cheese", 0,
&request_ret, &error)) {
    g_warning ("Unable to register service: %s", error->message);
    g_error_free (error);
  }

  /* check if there is already a instance running -> exit*/
  if (request_ret == DBUS_REQUEST_NAME_REPLY_EXISTS || request_ret ==
DBUS_REQUEST_NAME_REPLY_IN_QUEUE) {
    g_warning ("Another instance of cheese is already running!");

    /* notify the other instance of cheese*/
    proxy = dbus_g_proxy_new_for_name (klass->connection,
"org.gnome.Cheese", "/org/gnome/cheese", "org.gnome.Cheese");

    if (!dbus_g_proxy_call (proxy, "notify", &error, G_TYPE_INVALID,
G_TYPE_INVALID)) {
      /* Method failed, the GError is set, let's warn everyone */
      g_warning ("Notifying the other cheese instance failed: %s",
error->message);
      g_error_free (error);
    }

    g_object_unref (server);
    server = NULL;
  }

  g_object_unref (proxy);

  return server;
}

int main (int argc, char **argv) {
  CheeseDbus *dbus_server;

  g_thread_init (NULL);

  dbus_server = cheese_dbus_new ();
  if (dbus_server == NULL) {
    printf("failed\n");
    return -1;
  }

  printf("success\n");
  return 0;
}
--------------------


The output I get is this:

$ ./cheese

(process:22856): GLib-GObject-CRITICAL **:
/build/buildd/glib2.0-2.18.2/gobject/gtype.c:2458: initialization assertion
failed, use IA__g_type_init() prior to this function

(process:22856): GLib-CRITICAL **: g_once_init_leave: assertion
`initialization_value != 0' failed

(process:22856): GLib-GObject-CRITICAL **: g_object_new: assertion
`G_TYPE_IS_OBJECT (object_type)' failed



Using gdb, I find that the error lies on line 131 (originally on line 94 in
cheese-dbus.c) which is the one that says "server = g_object_new
(CHEESE_TYPE_DBUS, NULL);"


Any idea what the problem is?

Regards
Jostein A. Jacobsen

--0016e6d647b1b8c9c3046504c3cb
Content-Type: text/html; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable

<div class=3D"gmail_quote"><div><div class=3D"h5"><div class=3D"gmail_quote=
">Hi<br><br>I&#39;m trying to modify Cheese for a webcam capture applicatio=
n of my own. I simply need to fetch images from a webcam at the highest pos=
sible rate for further processing in my own program (embedded, no GUI), and=
 Cheese seems compatible with a wide range of cameras and has well-written =
code.<br>


<br>From how I understand the code, I will want to connect to the GstElemen=
t webcam_source_bin and write my own GStreamer sink if I want access to the=
 webcam... Unfortunately I&#39;m new to GLib, GObjects and GStreamer, but I=
&#39;ve been reading up on it for a couple of days now and have successfull=
y modified and compiled Cheese (If it still can be called that) without war=
nings, errors or any GUI dependencies (GTK, GDK, etc.). However, it won&#39=
;t execute as I had hoped. I have further removed as much as possible of th=
e code, includes and linked libraries to narrow down the possible sources o=
f error without changing the error I get. Compiling and running Cheese with=
out modification works flawlessly.<br>


<br>To reproduce the error, I compile my modified cheese.c with:<br><br><sp=
an style=3D"font-family: courier new,monospace;">gcc -pthread -I/usr/includ=
e/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/dbus-1.0 -I/usr/lib/d=
bus-1.0/include -g -Wall -c -o cheese.o cheese.c</span><br style=3D"font-fa=
mily: courier new,monospace;">


<span style=3D"font-family: courier new,monospace;">gcc -g -O2 -Wall -o che=
ese cheese.o -pthread -ldbus-glib-1 -lgstinterfaces-0.10</span><br> <br>And=
 this is my current cheese.c:<br><br>---------- cheese.c ----------<br><spa=
n style=3D"font-family: courier new,monospace;">#include &lt;dbus/dbus-glib=
-bindings.h&gt;</span><br style=3D"font-family: courier new,monospace;">


<span style=3D"font-family: courier new,monospace;">#include &lt;stdio.h&gt=
;</span><br style=3D"font-family: courier new,monospace;"><span style=3D"fo=
nt-family: courier new,monospace;">#include &lt;glib/gi18n.h&gt;</span><br =
style=3D"font-family: courier new,monospace;">


<br style=3D"font-family: courier new,monospace;"><span style=3D"font-famil=
y: courier new,monospace;">G_BEGIN_DECLS</span><br style=3D"font-family: co=
urier new,monospace;"><br style=3D"font-family: courier new,monospace;"><sp=
an style=3D"font-family: courier new,monospace;">typedef struct {</span><br=
 style=3D"font-family: courier new,monospace;">


<span style=3D"font-family: courier new,monospace;">=A0 GObjectClass parent=
_class;</span><br style=3D"font-family: courier new,monospace;"><span style=
=3D"font-family: courier new,monospace;">=A0 DBusGConnection *connection;</=
span><br style=3D"font-family: courier new,monospace;">


<span style=3D"font-family: courier new,monospace;">} CheeseDbusClass;</spa=
n><br style=3D"font-family: courier new,monospace;"><br style=3D"font-famil=
y: courier new,monospace;"><span style=3D"font-family: courier new,monospac=
e;">typedef struct _CheeseDbus {</span><br style=3D"font-family: courier ne=
w,monospace;">


<span style=3D"font-family: courier new,monospace;">=A0 GObject parent;</sp=
an><br style=3D"font-family: courier new,monospace;"><span style=3D"font-fa=
mily: courier new,monospace;">} CheeseDbus;</span><br style=3D"font-family:=
 courier new,monospace;">


<br style=3D"font-family: courier new,monospace;"><span style=3D"font-famil=
y: courier new,monospace;">#define CHEESE_TYPE_DBUS (cheese_dbus_get_type (=
))</span><br style=3D"font-family: courier new,monospace;"><span style=3D"f=
ont-family: courier new,monospace;">#define CHEESE_DBUS_GET_CLASS(obj)=A0 (=
G_TYPE_INSTANCE_GET_CLASS ((obj), CHEESE_TYPE_DBUS, CheeseDbusClass))</span=
><br style=3D"font-family: courier new,monospace;">


<br style=3D"font-family: courier new,monospace;"><span style=3D"font-famil=
y: courier new,monospace;">GType=A0=A0=A0=A0=A0=A0 cheese_dbus_get_type (vo=
id);</span><br style=3D"font-family: courier new,monospace;"><span style=3D=
"font-family: courier new,monospace;">CheeseDbus *cheese_dbus_new (void);</=
span><br style=3D"font-family: courier new,monospace;">


<br style=3D"font-family: courier new,monospace;"><span style=3D"font-famil=
y: courier new,monospace;">void=A0=A0=A0=A0 cheese_dbus_set_window (gpointe=
r);</span><br style=3D"font-family: courier new,monospace;"><span style=3D"=
font-family: courier new,monospace;">gboolean cheese_dbus_notify (void);</s=
pan><br style=3D"font-family: courier new,monospace;">


<br style=3D"font-family: courier new,monospace;"><span style=3D"font-famil=
y: courier new,monospace;">G_END_DECLS</span><br style=3D"font-family: cour=
ier new,monospace;"><br style=3D"font-family: courier new,monospace;"><span=
 style=3D"font-family: courier new,monospace;">G_BEGIN_DECLS</span><br styl=
e=3D"font-family: courier new,monospace;">


<br style=3D"font-family: courier new,monospace;"><span style=3D"font-famil=
y: courier new,monospace;">#define g_marshal_value_peek_pointer(v)=A0 (v)-&=
gt;data[0].v_pointer</span><br style=3D"font-family: courier new,monospace;=
"><br style=3D"font-family: courier new,monospace;">


<span style=3D"font-family: courier new,monospace;">extern void dbus_glib_m=
arshal_cheese_dbus_BOOLEAN__POINTER (GClosure=A0=A0=A0=A0 *closure,</span><=
br style=3D"font-family: courier new,monospace;"><span style=3D"font-family=
: courier new,monospace;">=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=
=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=
=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 GValue=A0=A0=A0=A0=
=A0=A0 *return_value,</span><br style=3D"font-family: courier new,monospace=
;">


<span style=3D"font-family: courier new,monospace;">=A0=A0=A0=A0=A0=A0=A0=
=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=
=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=
=A0=A0 guint=A0=A0=A0=A0=A0=A0=A0=A0 n_param_values,</span><br style=3D"fon=
t-family: courier new,monospace;"><span style=3D"font-family: courier new,m=
onospace;">=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=
=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=
=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 const GValue *param_values,</span><=
br style=3D"font-family: courier new,monospace;">


<span style=3D"font-family: courier new,monospace;">=A0=A0=A0=A0=A0=A0=A0=
=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=
=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=
=A0=A0 gpointer=A0=A0=A0=A0=A0 invocation_hint,</span><br style=3D"font-fam=
ily: courier new,monospace;"><span style=3D"font-family: courier new,monosp=
ace;">=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=
=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=
=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 gpointer=A0=A0=A0=A0=A0 marshal_data);</s=
pan><br style=3D"font-family: courier new,monospace;">


<span style=3D"font-family: courier new,monospace;">void</span><br style=3D=
"font-family: courier new,monospace;"><span style=3D"font-family: courier n=
ew,monospace;">dbus_glib_marshal_cheese_dbus_BOOLEAN__POINTER (GClosure=A0=
=A0=A0=A0 *closure,</span><br style=3D"font-family: courier new,monospace;"=
>


<span style=3D"font-family: courier new,monospace;">=A0=A0=A0=A0=A0=A0=A0=
=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=
=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 GValue=A0=A0=A0=A0=A0=A0 *ret=
urn_value G_GNUC_UNUSED,</span><br style=3D"font-family: courier new,monosp=
ace;"><span style=3D"font-family: courier new,monospace;">=A0=A0=A0=A0=A0=
=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=
=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 guint=A0=A0=A0=A0=A0=A0=
=A0=A0 n_param_values,</span><br style=3D"font-family: courier new,monospac=
e;">


<span style=3D"font-family: courier new,monospace;">=A0=A0=A0=A0=A0=A0=A0=
=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=
=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 const GValue *param_values,</=
span><br style=3D"font-family: courier new,monospace;"><span style=3D"font-=
family: courier new,monospace;">=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=
=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=
=A0=A0=A0=A0=A0=A0=A0=A0 gpointer=A0=A0=A0=A0=A0 invocation_hint G_GNUC_UNU=
SED,</span><br style=3D"font-family: courier new,monospace;">


<span style=3D"font-family: courier new,monospace;">=A0=A0=A0=A0=A0=A0=A0=
=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=
=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 gpointer=A0=A0=A0=A0=A0 marsh=
al_data)</span><br style=3D"font-family: courier new,monospace;"><span styl=
e=3D"font-family: courier new,monospace;">{</span><br style=3D"font-family:=
 courier new,monospace;">


<span style=3D"font-family: courier new,monospace;">=A0 typedef gboolean (*=
GMarshalFunc_BOOLEAN__POINTER) (gpointer=A0=A0=A0=A0 data1,</span><br style=
=3D"font-family: courier new,monospace;"><span style=3D"font-family: courie=
r new,monospace;">=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=
=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=
=A0=A0=A0=A0=A0=A0=A0=A0 gpointer=A0=A0=A0=A0 arg_1,</span><br style=3D"fon=
t-family: courier new,monospace;">


<span style=3D"font-family: courier new,monospace;">=A0=A0=A0=A0=A0=A0=A0=
=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=
=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 gpointer=A0=A0=
=A0=A0 data2);</span><br style=3D"font-family: courier new,monospace;"><spa=
n style=3D"font-family: courier new,monospace;">=A0 register GMarshalFunc_B=
OOLEAN__POINTER callback;</span><br style=3D"font-family: courier new,monos=
pace;">


<span style=3D"font-family: courier new,monospace;">=A0 register GCClosure =
*cc =3D (GCClosure*) closure;</span><br style=3D"font-family: courier new,m=
onospace;"><span style=3D"font-family: courier new,monospace;">=A0 register=
 gpointer data1, data2;</span><br style=3D"font-family: courier new,monospa=
ce;">


<span style=3D"font-family: courier new,monospace;">=A0 gboolean v_return;<=
/span><br style=3D"font-family: courier new,monospace;"><br style=3D"font-f=
amily: courier new,monospace;"><span style=3D"font-family: courier new,mono=
space;">=A0 g_return_if_fail (return_value !=3D NULL);</span><br style=3D"f=
ont-family: courier new,monospace;">


<span style=3D"font-family: courier new,monospace;">=A0 g_return_if_fail (n=
_param_values =3D=3D 2);</span><br style=3D"font-family: courier new,monosp=
ace;"><br style=3D"font-family: courier new,monospace;"><span style=3D"font=
-family: courier new,monospace;">=A0 if (G_CCLOSURE_SWAP_DATA (closure))</s=
pan><br style=3D"font-family: courier new,monospace;">


<span style=3D"font-family: courier new,monospace;">=A0=A0=A0 {</span><br s=
tyle=3D"font-family: courier new,monospace;"><span style=3D"font-family: co=
urier new,monospace;">=A0=A0=A0=A0=A0 data1 =3D closure-&gt;data;</span><br=
 style=3D"font-family: courier new,monospace;">


<span style=3D"font-family: courier new,monospace;">=A0=A0=A0=A0=A0 data2 =
=3D g_value_peek_pointer (param_values + 0);</span><br style=3D"font-family=
: courier new,monospace;"><span style=3D"font-family: courier new,monospace=
;">=A0=A0=A0 }</span><br style=3D"font-family: courier new,monospace;">


<span style=3D"font-family: courier new,monospace;">=A0 else</span><br styl=
e=3D"font-family: courier new,monospace;"><span style=3D"font-family: couri=
er new,monospace;">=A0=A0=A0 {</span><br style=3D"font-family: courier new,=
monospace;">


<span style=3D"font-family: courier new,monospace;">=A0=A0=A0=A0=A0 data1 =
=3D g_value_peek_pointer (param_values + 0);</span><br style=3D"font-family=
: courier new,monospace;"><span style=3D"font-family: courier new,monospace=
;">=A0=A0=A0=A0=A0 data2 =3D closure-&gt;data;</span><br style=3D"font-fami=
ly: courier new,monospace;">


<span style=3D"font-family: courier new,monospace;">=A0=A0=A0 }</span><br s=
tyle=3D"font-family: courier new,monospace;"><span style=3D"font-family: co=
urier new,monospace;">=A0 callback =3D (GMarshalFunc_BOOLEAN__POINTER) (mar=
shal_data ? marshal_data : cc-&gt;callback);</span><br style=3D"font-family=
: courier new,monospace;">


<br style=3D"font-family: courier new,monospace;"><span style=3D"font-famil=
y: courier new,monospace;">=A0 v_return =3D callback (data1,</span><br styl=
e=3D"font-family: courier new,monospace;"><span style=3D"font-family: couri=
er new,monospace;">=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=
=A0=A0=A0=A0 g_marshal_value_peek_pointer (param_values + 1),</span><br sty=
le=3D"font-family: courier new,monospace;">


<span style=3D"font-family: courier new,monospace;">=A0=A0=A0=A0=A0=A0=A0=
=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 data2);</span><br style=3D"fo=
nt-family: courier new,monospace;"><br style=3D"font-family: courier new,mo=
nospace;"><span style=3D"font-family: courier new,monospace;">=A0 g_value_s=
et_boolean (return_value, v_return);</span><br style=3D"font-family: courie=
r new,monospace;">


<span style=3D"font-family: courier new,monospace;">}</span><br style=3D"fo=
nt-family: courier new,monospace;"><br style=3D"font-family: courier new,mo=
nospace;"><span style=3D"font-family: courier new,monospace;">G_END_DECLS</=
span><br style=3D"font-family: courier new,monospace;">


<br style=3D"font-family: courier new,monospace;"><span style=3D"font-famil=
y: courier new,monospace;">static const DBusGMethodInfo dbus_glib_cheese_db=
us_methods[] =3D {</span><br style=3D"font-family: courier new,monospace;">=
<span style=3D"font-family: courier new,monospace;">=A0 { (GCallback) chees=
e_dbus_notify, dbus_glib_marshal_cheese_dbus_BOOLEAN__POINTER, 0 },</span><=
br style=3D"font-family: courier new,monospace;">


<span style=3D"font-family: courier new,monospace;">};</span><br style=3D"f=
ont-family: courier new,monospace;"><br style=3D"font-family: courier new,m=
onospace;"><span style=3D"font-family: courier new,monospace;">const DBusGO=
bjectInfo dbus_glib_cheese_dbus_object_info =3D {</span><br style=3D"font-f=
amily: courier new,monospace;">


<span style=3D"font-family: courier new,monospace;">=A0 0,</span><br style=
=3D"font-family: courier new,monospace;"><span style=3D"font-family: courie=
r new,monospace;">=A0 dbus_glib_cheese_dbus_methods,</span><br style=3D"fon=
t-family: courier new,monospace;">


<span style=3D"font-family: courier new,monospace;">=A0 1,</span><br style=
=3D"font-family: courier new,monospace;"><span style=3D"font-family: courie=
r new,monospace;">&quot;org.gnome.Cheese\0notify\0S\0\0\0&quot;,</span><br =
style=3D"font-family: courier new,monospace;">


<span style=3D"font-family: courier new,monospace;">&quot;\0&quot;,</span><=
br style=3D"font-family: courier new,monospace;"><span style=3D"font-family=
: courier new,monospace;">&quot;\0&quot;</span><br style=3D"font-family: co=
urier new,monospace;">


<span style=3D"font-family: courier new,monospace;">};</span><br style=3D"f=
ont-family: courier new,monospace;"><br style=3D"font-family: courier new,m=
onospace;"><span style=3D"font-family: courier new,monospace;">gpointer win=
dow_pointer;</span><br style=3D"font-family: courier new,monospace;">


<br style=3D"font-family: courier new,monospace;"><span style=3D"font-famil=
y: courier new,monospace;">G_DEFINE_TYPE (CheeseDbus, cheese_dbus, G_TYPE_O=
BJECT);</span><br style=3D"font-family: courier new,monospace;"><br style=
=3D"font-family: courier new,monospace;">


<span style=3D"font-family: courier new,monospace;">void cheese_dbus_set_wi=
ndow (gpointer data) {</span><br style=3D"font-family: courier new,monospac=
e;"><span style=3D"font-family: courier new,monospace;">=A0 if (data !=3D N=
ULL)</span><br style=3D"font-family: courier new,monospace;">


<span style=3D"font-family: courier new,monospace;">=A0=A0=A0 window_pointe=
r =3D data;</span><br style=3D"font-family: courier new,monospace;"><span s=
tyle=3D"font-family: courier new,monospace;">}</span><br style=3D"font-fami=
ly: courier new,monospace;">


<br style=3D"font-family: courier new,monospace;"><span style=3D"font-famil=
y: courier new,monospace;">gboolean cheese_dbus_notify () {</span><br style=
=3D"font-family: courier new,monospace;"><span style=3D"font-family: courie=
r new,monospace;">=A0 return TRUE;</span><br style=3D"font-family: courier =
new,monospace;">


<span style=3D"font-family: courier new,monospace;">}</span><br style=3D"fo=
nt-family: courier new,monospace;"><br style=3D"font-family: courier new,mo=
nospace;"><span style=3D"font-family: courier new,monospace;">void cheese_d=
bus_class_init (CheeseDbusClass *klass) {</span><br style=3D"font-family: c=
ourier new,monospace;">


<span style=3D"font-family: courier new,monospace;">=A0 GError *error =3D N=
ULL;</span><br style=3D"font-family: courier new,monospace;"><br style=3D"f=
ont-family: courier new,monospace;"><span style=3D"font-family: courier new=
,monospace;">=A0 /* Init the DBus connection, per-klass */</span><br style=
=3D"font-family: courier new,monospace;">


<span style=3D"font-family: courier new,monospace;">=A0 klass-&gt;connectio=
n =3D dbus_g_bus_get (DBUS_BUS_SESSION, &amp;error);</span><br style=3D"fon=
t-family: courier new,monospace;"><span style=3D"font-family: courier new,m=
onospace;">=A0 if (klass-&gt;connection =3D=3D NULL) {</span><br style=3D"f=
ont-family: courier new,monospace;">


<span style=3D"font-family: courier new,monospace;">=A0=A0=A0 g_warning (&q=
uot;Unable to connect to dbus: %s&quot;, error-&gt;message);</span><br styl=
e=3D"font-family: courier new,monospace;"><span style=3D"font-family: couri=
er new,monospace;">=A0=A0=A0 g_error_free (error);</span><br style=3D"font-=
family: courier new,monospace;">


<span style=3D"font-family: courier new,monospace;">=A0=A0=A0 return;</span=
><br style=3D"font-family: courier new,monospace;"><span style=3D"font-fami=
ly: courier new,monospace;">=A0 }</span><br style=3D"font-family: courier n=
ew,monospace;">


<br style=3D"font-family: courier new,monospace;"><span style=3D"font-famil=
y: courier new,monospace;">=A0 dbus_g_object_type_install_info (CHEESE_TYPE=
_DBUS, &amp;dbus_glib_cheese_dbus_object_info);</span><br style=3D"font-fam=
ily: courier new,monospace;">


<span style=3D"font-family: courier new,monospace;">}</span><br style=3D"fo=
nt-family: courier new,monospace;"><br style=3D"font-family: courier new,mo=
nospace;"><span style=3D"font-family: courier new,monospace;">void cheese_d=
bus_init (CheeseDbus *server) {</span><br style=3D"font-family: courier new=
,monospace;">


<span style=3D"font-family: courier new,monospace;">=A0 CheeseDbusClass *kl=
ass =3D CHEESE_DBUS_GET_CLASS (server);</span><br style=3D"font-family: cou=
rier new,monospace;"><br style=3D"font-family: courier new,monospace;"><spa=
n style=3D"font-family: courier new,monospace;">=A0 /* Register DBUS path *=
/</span><br style=3D"font-family: courier new,monospace;">


<span style=3D"font-family: courier new,monospace;">=A0 dbus_g_connection_r=
egister_g_object (klass-&gt;connection, &quot;/org/gnome/cheese&quot;, G_OB=
JECT (server));</span><br style=3D"font-family: courier new,monospace;"><sp=
an style=3D"font-family: courier new,monospace;">}</span><br style=3D"font-=
family: courier new,monospace;">


<br style=3D"font-family: courier new,monospace;"><span style=3D"font-famil=
y: courier new,monospace;">CheeseDbus* cheese_dbus_new () {</span><br style=
=3D"font-family: courier new,monospace;"><span style=3D"font-family: courie=
r new,monospace;">=A0 CheeseDbus=A0=A0=A0=A0=A0 *server;</span><br style=3D=
"font-family: courier new,monospace;">


<span style=3D"font-family: courier new,monospace;">=A0 GError=A0=A0=A0=A0=
=A0=A0=A0=A0=A0 *error =3D NULL;</span><br style=3D"font-family: courier ne=
w,monospace;"><span style=3D"font-family: courier new,monospace;">=A0 DBusG=
Proxy=A0=A0=A0=A0=A0 *proxy;</span><br style=3D"font-family: courier new,mo=
nospace;">


<span style=3D"font-family: courier new,monospace;">=A0 guint=A0=A0=A0=A0=
=A0=A0=A0=A0=A0=A0=A0 request_ret;</span><br style=3D"font-family: courier =
new,monospace;"><span style=3D"font-family: courier new,monospace;">=A0 Che=
eseDbusClass *klass;</span><br style=3D"font-family: courier new,monospace;=
">


<br style=3D"font-family: courier new,monospace;"><span style=3D"font-famil=
y: courier new,monospace;">=A0 server =3D g_object_new (CHEESE_TYPE_DBUS, N=
ULL);</span><br style=3D"font-family: courier new,monospace;"><br style=3D"=
font-family: courier new,monospace;">


<span style=3D"font-family: courier new,monospace;">=A0 klass =3D CHEESE_DB=
US_GET_CLASS (server);</span><br style=3D"font-family: courier new,monospac=
e;"><br style=3D"font-family: courier new,monospace;"><span style=3D"font-f=
amily: courier new,monospace;">=A0 /* Register the service name, the consta=
nt here are defined in dbus-glib-bindings.h */</span><br style=3D"font-fami=
ly: courier new,monospace;">


<span style=3D"font-family: courier new,monospace;">=A0 proxy =3D dbus_g_pr=
oxy_new_for_name (klass-&gt;connection, DBUS_SERVICE_DBUS, DBUS_PATH_DBUS, =
DBUS_INTERFACE_DBUS);</span><br style=3D"font-family: courier new,monospace=
;">

<br style=3D"font-family: courier new,monospace;">
<span style=3D"font-family: courier new,monospace;">=A0 if (!org_freedeskto=
p_DBus_request_name (proxy, &quot;org.gnome.Cheese&quot;, 0, &amp;request_r=
et, &amp;error)) {</span><br style=3D"font-family: courier new,monospace;">=
<span style=3D"font-family: courier new,monospace;">=A0=A0=A0 g_warning (&q=
uot;Unable to register service: %s&quot;, error-&gt;message);</span><br sty=
le=3D"font-family: courier new,monospace;">


<span style=3D"font-family: courier new,monospace;">=A0=A0=A0 g_error_free =
(error);</span><br style=3D"font-family: courier new,monospace;"><span styl=
e=3D"font-family: courier new,monospace;">=A0 }</span><br style=3D"font-fam=
ily: courier new,monospace;">


<br style=3D"font-family: courier new,monospace;"><span style=3D"font-famil=
y: courier new,monospace;">=A0 /* check if there is already a instance runn=
ing -&gt; exit*/</span><br style=3D"font-family: courier new,monospace;"><s=
pan style=3D"font-family: courier new,monospace;">=A0 if (request_ret =3D=
=3D DBUS_REQUEST_NAME_REPLY_EXISTS || request_ret =3D=3D DBUS_REQUEST_NAME_=
REPLY_IN_QUEUE) {</span><br style=3D"font-family: courier new,monospace;">


<span style=3D"font-family: courier new,monospace;">=A0=A0=A0 g_warning (&q=
uot;Another instance of cheese is already running!&quot;);</span><br style=
=3D"font-family: courier new,monospace;"><span style=3D"font-family: courie=
r new,monospace;">=A0=A0=A0 </span><br style=3D"font-family: courier new,mo=
nospace;">


<span style=3D"font-family: courier new,monospace;">=A0=A0=A0 /* notify the=
 other instance of cheese*/</span><br style=3D"font-family: courier new,mon=
ospace;"><span style=3D"font-family: courier new,monospace;">=A0=A0=A0 prox=
y =3D dbus_g_proxy_new_for_name (klass-&gt;connection, &quot;org.gnome.Chee=
se&quot;, &quot;/org/gnome/cheese&quot;, &quot;org.gnome.Cheese&quot;);</sp=
an><br style=3D"font-family: courier new,monospace;">


<span style=3D"font-family: courier new,monospace;">=A0=A0=A0 </span><br st=
yle=3D"font-family: courier new,monospace;"><span style=3D"font-family: cou=
rier new,monospace;">=A0=A0=A0 if (!dbus_g_proxy_call (proxy, &quot;notify&=
quot;, &amp;error, G_TYPE_INVALID, G_TYPE_INVALID)) {</span><br style=3D"fo=
nt-family: courier new,monospace;">


<span style=3D"font-family: courier new,monospace;">=A0=A0=A0=A0=A0 /* Meth=
od failed, the GError is set, let&#39;s warn everyone */</span><br style=3D=
"font-family: courier new,monospace;"><span style=3D"font-family: courier n=
ew,monospace;">=A0=A0=A0=A0=A0 g_warning (&quot;Notifying the other cheese =
instance failed: %s&quot;, error-&gt;message);</span><br style=3D"font-fami=
ly: courier new,monospace;">


<span style=3D"font-family: courier new,monospace;">=A0=A0=A0=A0=A0 g_error=
_free (error);</span><br style=3D"font-family: courier new,monospace;"><spa=
n style=3D"font-family: courier new,monospace;">=A0=A0=A0 }</span><br style=
=3D"font-family: courier new,monospace;">


<span style=3D"font-family: courier new,monospace;">=A0=A0=A0 </span><br st=
yle=3D"font-family: courier new,monospace;"><span style=3D"font-family: cou=
rier new,monospace;">=A0=A0=A0 g_object_unref (server);</span><br style=3D"=
font-family: courier new,monospace;">


<span style=3D"font-family: courier new,monospace;">=A0=A0=A0 server =3D NU=
LL;</span><br style=3D"font-family: courier new,monospace;"><span style=3D"=
font-family: courier new,monospace;">=A0 }</span><br style=3D"font-family: =
courier new,monospace;">


<span style=3D"font-family: courier new,monospace;">=A0 </span><br style=3D=
"font-family: courier new,monospace;"><span style=3D"font-family: courier n=
ew,monospace;">=A0 g_object_unref (proxy);</span><br style=3D"font-family: =
courier new,monospace;">


<span style=3D"font-family: courier new,monospace;">=A0 </span><br style=3D=
"font-family: courier new,monospace;"><span style=3D"font-family: courier n=
ew,monospace;">=A0 return server;</span><br style=3D"font-family: courier n=
ew,monospace;">


<span style=3D"font-family: courier new,monospace;">}</span><br style=3D"fo=
nt-family: courier new,monospace;"><br style=3D"font-family: courier new,mo=
nospace;"><span style=3D"font-family: courier new,monospace;">int main (int=
 argc, char **argv) {</span><br style=3D"font-family: courier new,monospace=
;">


<span style=3D"font-family: courier new,monospace;">=A0 CheeseDbus *dbus_se=
rver;</span><br style=3D"font-family: courier new,monospace;"><span style=
=3D"font-family: courier new,monospace;">=A0 </span><br style=3D"font-famil=
y: courier new,monospace;">


<span style=3D"font-family: courier new,monospace;">=A0 g_thread_init (NULL=
);</span><br style=3D"font-family: courier new,monospace;"><span style=3D"f=
ont-family: courier new,monospace;">=A0 </span><br style=3D"font-family: co=
urier new,monospace;">


<span style=3D"font-family: courier new,monospace;">=A0 dbus_server =3D che=
ese_dbus_new ();</span><br style=3D"font-family: courier new,monospace;"><s=
pan style=3D"font-family: courier new,monospace;">=A0 if (dbus_server =3D=
=3D NULL) {</span><br style=3D"font-family: courier new,monospace;">


<span style=3D"font-family: courier new,monospace;">=A0=A0=A0 printf(&quot;=
failed\n&quot;);</span><br style=3D"font-family: courier new,monospace;"><s=
pan style=3D"font-family: courier new,monospace;">=A0=A0=A0 return -1;</spa=
n><br style=3D"font-family: courier new,monospace;">


<span style=3D"font-family: courier new,monospace;">=A0 }</span><br style=
=3D"font-family: courier new,monospace;"><span style=3D"font-family: courie=
r new,monospace;">=A0 </span><br style=3D"font-family: courier new,monospac=
e;"><span style=3D"font-family: courier new,monospace;">=A0 printf(&quot;su=
ccess\n&quot;);</span><br style=3D"font-family: courier new,monospace;">


<span style=3D"font-family: courier new,monospace;">=A0 return 0;</span><br=
 style=3D"font-family: courier new,monospace;"><span style=3D"font-family: =
courier new,monospace;">}</span><br>--------------------<br><br><br>The out=
put I get is this:<br>


<br style=3D"font-family: courier new,monospace;"><span style=3D"font-famil=
y: courier new,monospace;">$ ./cheese</span><br style=3D"font-family: couri=
er new,monospace;"><br style=3D"font-family: courier new,monospace;"><span =
style=3D"font-family: courier new,monospace;">(process:22856): GLib-GObject=
-CRITICAL **: /build/buildd/glib2.0-2.18.2/gobject/gtype.c:2458: initializa=
tion assertion failed, use IA__g_type_init() prior to this function</span><=
br style=3D"font-family: courier new,monospace;">


<br style=3D"font-family: courier new,monospace;"><span style=3D"font-famil=
y: courier new,monospace;">(process:22856): GLib-CRITICAL **: g_once_init_l=
eave: assertion `initialization_value !=3D 0&#39; failed</span><br style=3D=
"font-family: courier new,monospace;">


<br style=3D"font-family: courier new,monospace;"><span style=3D"font-famil=
y: courier new,monospace;">(process:22856): GLib-GObject-CRITICAL **: g_obj=
ect_new: assertion `G_TYPE_IS_OBJECT (object_type)&#39; failed</span><br><b=
r>


<br><br>Using gdb, I find that the error lies on line 131 (originally on li=
ne 94 in cheese-dbus.c) which is the one that says &quot;server =3D g_objec=
t_new (CHEESE_TYPE_DBUS, NULL);&quot;<br><br><br>Any idea what the problem =
is?<br>


<br>Regards<br>Jostein A. Jacobsen<br>
</div><br>
</div></div></div><br>

--0016e6d647b1b8c9c3046504c3cb--