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Moved deep notify to GstObject

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Original commit message from CVS:
Moved deep notify to GstObject
This commit is contained in:
Wim Taymans 2002-11-02 13:19:30 +00:00
parent 4992cb5838
commit 6637a949e7
4 changed files with 116 additions and 110 deletions
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121
gst/gstelement.c
View file

@ -41,7 +41,6 @@ enum {
PAD_REMOVED,
ERROR,
EOS,
DEEP_NOTIFY,
LAST_SIGNAL
};
@ -60,7 +59,6 @@ static void gst_element_real_set_property (GObject *object, guint prop_id,
const GValue *value, GParamSpec *pspec);
static void gst_element_real_get_property (GObject *object, guint prop_id, GValue *value,
GParamSpec *pspec);
static void gst_element_dispatch_properties_changed (GObject * object, guint n_pspecs, GParamSpec **pspecs);
static void gst_element_dispose (GObject *object);
@ -137,21 +135,10 @@ gst_element_class_init (GstElementClass *klass)
g_signal_new ("eos", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GstElementClass,eos), NULL, NULL,
gst_marshal_VOID__VOID, G_TYPE_NONE, 0);
gst_element_signals[DEEP_NOTIFY] =
g_signal_new ("deep_notify", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST | G_SIGNAL_NO_RECURSE | G_SIGNAL_DETAILED | G_SIGNAL_NO_HOOKS,
G_STRUCT_OFFSET (GstElementClass, deep_notify), NULL, NULL,
gst_marshal_VOID__OBJECT_PARAM, G_TYPE_NONE,
2, G_TYPE_OBJECT, G_TYPE_PARAM);
gobject_class->set_property = GST_DEBUG_FUNCPTR (gst_element_real_set_property);
gobject_class->get_property = GST_DEBUG_FUNCPTR (gst_element_real_get_property);
/* see the comments at gst_element_dispatch_properties_changed */
gobject_class->dispatch_properties_changed
= GST_DEBUG_FUNCPTR (gst_element_dispatch_properties_changed);
gobject_class->dispose = GST_DEBUG_FUNCPTR (gst_element_dispose);
#ifndef GST_DISABLE_LOADSAVE
@ -214,87 +201,6 @@ gst_element_real_get_property (GObject *object, guint prop_id, GValue *value, GP
(oclass->get_property) (object, prop_id, value, pspec);
}
/* Changing a GObject property of an element will result in "deep_notify"
* signals being emitted by the element itself, as well as in each parent
* element. This is so that an application can connect a listener to the
* top-level bin to catch property-change notifications for all contained
* elements. */
static void
gst_element_dispatch_properties_changed (GObject *object,
guint n_pspecs,
GParamSpec **pspecs)
{
GstObject *gst_object;
guint i;
/* do the standard dispatching */
G_OBJECT_CLASS (parent_class)->dispatch_properties_changed (object, n_pspecs, pspecs);
/* now let the parent dispatch those, too */
gst_object = GST_OBJECT_PARENT (object);
while (gst_object) {
/* need own category? */
for (i = 0; i < n_pspecs; i++) {
GST_DEBUG (GST_CAT_EVENT, "deep notification from %s to %s (%s)", GST_OBJECT_NAME (object),
GST_OBJECT_NAME (gst_object), pspecs[i]->name);
g_signal_emit (gst_object, gst_element_signals[DEEP_NOTIFY], g_quark_from_string (pspecs[i]->name),
(GstObject *) object, pspecs[i]);
}
gst_object = GST_OBJECT_PARENT (gst_object);
}
}
/**
* gst_element_default_deep_notify:
* @object: the #GObject that signalled the notify.
* @orig: a #GstObject that initiated the notify.
* @pspec: a #GParamSpec of the property.
* @excluded_props: a set of user-specified properties to exclude.
*
* Adds a default deep_notify signal callback to an
* element. The user data should contain a pointer to an array of
* strings that should be excluded from the notify.
* The default handler will print the new value of the property
* using g_print.
*/
void
gst_element_default_deep_notify (GObject *object, GstObject *orig,
GParamSpec *pspec, gchar **excluded_props)
{
GValue value = { 0, }; /* the important thing is that value.type = 0 */
gchar *str = 0;
if (pspec->flags & G_PARAM_READABLE) {
/* let's not print these out for excluded properties... */
while (excluded_props != NULL && *excluded_props != NULL) {
if (strcmp (pspec->name, *excluded_props) == 0)
return;
excluded_props++;
}
g_value_init (&value, G_PARAM_SPEC_VALUE_TYPE (pspec));
g_object_get_property (G_OBJECT (orig), pspec->name, &value);
if (G_IS_PARAM_SPEC_ENUM (pspec)) {
GEnumValue *enum_value;
enum_value = g_enum_get_value (G_ENUM_CLASS (g_type_class_ref (pspec->value_type)),
g_value_get_enum (&value));
str = g_strdup_printf ("%s (%d)", enum_value->value_nick,
enum_value->value);
}
else {
str = g_strdup_value_contents (&value);
}
g_print ("%s: %s = %s\n", GST_OBJECT_NAME (orig), pspec->name, str);
g_free (str);
g_value_unset (&value);
} else {
g_warning ("Parameter %s not readable in %s.",
pspec->name, GST_OBJECT_NAME (orig));
}
}
/**
* gst_element_default_error:
* @object: a #GObject that signalled the error.
@ -1085,11 +991,10 @@ gst_element_get_pad (GstElement *element, const gchar *name)
g_return_val_if_fail (GST_IS_ELEMENT (element), NULL);
g_return_val_if_fail (name != NULL, NULL);
if ((pad = gst_element_get_static_pad (element, name)))
return pad;
pad = gst_element_get_request_pad (element, name);
pad = gst_element_get_static_pad (element, name);
if (!pad)
pad = gst_element_get_request_pad (element, name);
return pad;
}
@ -2201,20 +2106,13 @@ gst_element_change_state (GstElement *element)
break;
}
/* tell the scheduler if we have one */
if (element->sched) {
if (gst_scheduler_state_transition (element->sched, element,
old_transition) != GST_STATE_SUCCESS) {
goto failure;
}
}
parent = GST_ELEMENT_PARENT (element);
GST_DEBUG_ELEMENT (GST_CAT_STATES, element,
"signaling state change from %s to %s",
gst_element_state_get_name (old_state),
gst_element_state_get_name (GST_STATE (element)));
g_signal_emit (G_OBJECT (element), gst_element_signals[STATE_CHANGE],
0, old_state, GST_STATE (element));
@ -2224,11 +2122,20 @@ gst_element_change_state (GstElement *element)
GST_STATE (element), element);
}
/* signal the state change in case somebody is waiting for us */
g_mutex_lock (element->state_mutex);
g_cond_signal (element->state_cond);
g_mutex_unlock (element->state_mutex);
/* tell the scheduler if we have one */
if (element->sched) {
if (gst_scheduler_state_transition (element->sched, element,
old_transition) != GST_STATE_SUCCESS) {
goto failure;
}
}
return GST_STATE_SUCCESS;
failure:

6
gst/gstelement.h
View file

@ -128,6 +128,7 @@ struct _GstElement {
GstElementSetClockFunction setclockfunc;
GstElementGetClockFunction getclockfunc;
GstClock *clock;
GstClockTime base_time;
/* element pads */
guint16 numpads;
@ -160,7 +161,6 @@ struct _GstElementClass {
void (*pad_removed) (GstElement *element, GstPad *pad);
void (*error) (GstElement *element, GstElement *source, gchar *error);
void (*eos) (GstElement *element);
void (*deep_notify) (GstObject *object, GstObject *orig, GParamSpec *pspec);
/* local pointers for get/set */
void (*set_property) (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec);
@ -182,8 +182,8 @@ void gst_element_class_add_pad_template (GstElementClass *klass, GstPadTemplat
void gst_element_class_install_std_props (GstElementClass *klass,
const gchar *first_name, ...);
void gst_element_default_deep_notify (GObject *object, GstObject *orig,
GParamSpec *pspec, gchar **excluded_props);
#define gst_element_default_deep_notify gst_object_default_deep_notify
void gst_element_default_error (GObject *object, GstObject *orig, gchar *error);
GType gst_element_get_type (void);

95
gst/gstobject.c
View file

@ -32,6 +32,7 @@ enum {
#ifndef GST_DISABLE_LOADSAVE_REGISTRY
OBJECT_SAVED,
#endif
DEEP_NOTIFY,
LAST_SIGNAL
};
@ -66,6 +67,9 @@ static void gst_object_set_property (GObject * object, guint prop_id, const G
GParamSpec * pspec);
static void gst_object_get_property (GObject * object, guint prop_id, GValue * value,
GParamSpec * pspec);
static void gst_object_dispatch_properties_changed (GObject *object,
guint n_pspecs,
GParamSpec **pspecs);
static void gst_object_dispose (GObject *object);
static void gst_object_finalize (GObject *object);
@ -133,10 +137,20 @@ gst_object_class_init (GstObjectClass *klass)
klass->restore_thyself = gst_object_real_restore_thyself;
#endif
gst_object_signals[DEEP_NOTIFY] =
g_signal_new ("deep_notify", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST | G_SIGNAL_NO_RECURSE | G_SIGNAL_DETAILED | G_SIGNAL_NO_HOOKS,
G_STRUCT_OFFSET (GstObjectClass, deep_notify), NULL, NULL,
gst_marshal_VOID__OBJECT_PARAM, G_TYPE_NONE,
2, G_TYPE_OBJECT, G_TYPE_PARAM);
klass->path_string_separator = "/";
klass->signal_object = g_object_new (gst_signal_object_get_type (), NULL);
/* see the comments at gst_element_dispatch_properties_changed */
gobject_class->dispatch_properties_changed
= GST_DEBUG_FUNCPTR (gst_object_dispatch_properties_changed);
gobject_class->dispose = gst_object_dispose;
gobject_class->finalize = gst_object_finalize;
@ -265,6 +279,87 @@ gst_object_finalize (GObject *object)
parent_class->finalize (object);
}
/* Changing a GObject property of an element will result in "deep_notify"
* signals being emitted by the element itself, as well as in each parent
* element. This is so that an application can connect a listener to the
* top-level bin to catch property-change notifications for all contained
* elements. */
static void
gst_object_dispatch_properties_changed (GObject *object,
guint n_pspecs,
GParamSpec **pspecs)
{
GstObject *gst_object;
guint i;
/* do the standard dispatching */
G_OBJECT_CLASS (parent_class)->dispatch_properties_changed (object, n_pspecs, pspecs);
/* now let the parent dispatch those, too */
gst_object = GST_OBJECT_PARENT (object);
while (gst_object) {
/* need own category? */
for (i = 0; i < n_pspecs; i++) {
GST_DEBUG (GST_CAT_EVENT, "deep notification from %s to %s (%s)", GST_OBJECT_NAME (object),
GST_OBJECT_NAME (gst_object), pspecs[i]->name);
g_signal_emit (gst_object, gst_object_signals[DEEP_NOTIFY], g_quark_from_string (pspecs[i]->name),
(GstObject *) object, pspecs[i]);
}
gst_object = GST_OBJECT_PARENT (gst_object);
}
}
/**
* gst_object_default_deep_notify:
* @object: the #GObject that signalled the notify.
* @orig: a #GstObject that initiated the notify.
* @pspec: a #GParamSpec of the property.
* @excluded_props: a set of user-specified properties to exclude.
*
* Adds a default deep_notify signal callback to an
* element. The user data should contain a pointer to an array of
* strings that should be excluded from the notify.
* The default handler will print the new value of the property
* using g_print.
*/
void
gst_object_default_deep_notify (GObject *object, GstObject *orig,
GParamSpec *pspec, gchar **excluded_props)
{
GValue value = { 0, }; /* the important thing is that value.type = 0 */
gchar *str = 0;
if (pspec->flags & G_PARAM_READABLE) {
/* let's not print these out for excluded properties... */
while (excluded_props != NULL && *excluded_props != NULL) {
if (strcmp (pspec->name, *excluded_props) == 0)
return;
excluded_props++;
}
g_value_init (&value, G_PARAM_SPEC_VALUE_TYPE (pspec));
g_object_get_property (G_OBJECT (orig), pspec->name, &value);
if (G_IS_PARAM_SPEC_ENUM (pspec)) {
GEnumValue *enum_value;
enum_value = g_enum_get_value (G_ENUM_CLASS (g_type_class_ref (pspec->value_type)),
g_value_get_enum (&value));
str = g_strdup_printf ("%s (%d)", enum_value->value_nick,
enum_value->value);
}
else {
str = g_strdup_value_contents (&value);
}
g_print ("%s: %s = %s\n", GST_OBJECT_NAME (orig), pspec->name, str);
g_free (str);
g_value_unset (&value);
} else {
g_warning ("Parameter %s not readable in %s.",
pspec->name, GST_OBJECT_NAME (orig));
}
}
static void
gst_object_set_name_default (GstObject *object)
{

4
gst/gstobject.h
View file

@ -92,6 +92,7 @@ struct _GstObjectClass {
#ifndef GST_DISABLE_LOADSAVE_REGISTRY
void (*object_saved) (GstObject *object, xmlNodePtr parent);
#endif
void (*deep_notify) (GstObject *object, GstObject *orig, GParamSpec *pspec);
/* functions go here */
void (*destroy) (GstObject *object);
@ -132,6 +133,9 @@ void gst_object_set_parent (GstObject *object, GstObject *parent);
GstObject* gst_object_get_parent (GstObject *object);
void gst_object_unparent (GstObject *object);
void gst_object_default_deep_notify (GObject *object, GstObject *orig,
GParamSpec *pspec, gchar **excluded_props);
gboolean gst_object_check_uniqueness (GList *list, const gchar *name);
#ifndef GST_DISABLE_LOADSAVE_REGISTRY