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Change the iterate callback functions to a GSignal

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Original commit message from CVS:
Change the iterate callback functions to a GSignal
This commit is contained in:
David Schleef 2003-10-14 00:00:37 +00:00
parent c377174f2c
commit dcb2dce108
3 changed files with 29 additions and 64 deletions
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87
gst/gstbin.c
View file

@ -43,6 +43,9 @@ GstElementDetails gst_bin_details = {
GType _gst_bin_type = 0;
static gboolean _gst_boolean_did_something_accumulator (GSignalInvocationHint *ihint,
GValue *return_accu, const GValue *handler_return, gpointer dummy);
static void gst_bin_dispose (GObject * object);
static GstElementStateReturn gst_bin_change_state (GstElement *element);
@ -72,6 +75,7 @@ enum
{
ELEMENT_ADDED,
ELEMENT_REMOVED,
ITERATE,
LAST_SIGNAL
};
@ -130,6 +134,11 @@ gst_bin_class_init (GstBinClass * klass)
g_signal_new ("element_removed", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GstBinClass, element_removed), NULL, NULL,
gst_marshal_VOID__POINTER, G_TYPE_NONE, 1, G_TYPE_POINTER);
gst_bin_signals[ITERATE] =
g_signal_new ("iterate", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GstBinClass, iterate),
_gst_boolean_did_something_accumulator, NULL,
gst_marshal_BOOLEAN__VOID, G_TYPE_BOOLEAN, 0);
gobject_class->dispose = GST_DEBUG_FUNCPTR (gst_bin_dispose);
@ -149,6 +158,21 @@ gst_bin_class_init (GstBinClass * klass)
klass->iterate = GST_DEBUG_FUNCPTR (gst_bin_iterate_func);
}
static gboolean
_gst_boolean_did_something_accumulator (GSignalInvocationHint *ihint,
GValue *return_accu, const GValue *handler_return, gpointer dummy)
{
gboolean did_something;
did_something = g_value_get_boolean (handler_return);
if (did_something) {
g_value_set_boolean (return_accu, TRUE);
}
/* always continue emission */
return TRUE;
}
static void
gst_bin_init (GstBin * bin)
{
@ -157,11 +181,6 @@ gst_bin_init (GstBin * bin)
bin->numchildren = 0;
bin->children = NULL;
bin->pre_iterate_func = NULL;
bin->post_iterate_func = NULL;
bin->pre_iterate_data = NULL;
bin->post_iterate_data = NULL;
}
/**
@ -1010,26 +1029,17 @@ gst_bin_iterate_func (GstBin * bin)
gboolean
gst_bin_iterate (GstBin *bin)
{
GstBinClass *oclass;
gboolean running = TRUE;
GST_CAT_LOG_OBJECT (GST_CAT_DATAFLOW, bin, "starting iteration");
gboolean running;
g_return_val_if_fail (bin != NULL, FALSE);
g_return_val_if_fail (GST_IS_BIN (bin), FALSE);
oclass = GST_BIN_GET_CLASS (bin);
GST_CAT_LOG_OBJECT (GST_CAT_DATAFLOW, bin, "starting iteration");
gst_object_ref (GST_OBJECT (bin));
if (bin->pre_iterate_func)
(bin->pre_iterate_func) (bin, bin->pre_iterate_data);
if (oclass->iterate)
running = (oclass->iterate) (bin);
if (bin->post_iterate_func)
(bin->post_iterate_func) (bin, bin->post_iterate_data);
running = FALSE;
g_signal_emit (G_OBJECT (bin), gst_bin_signals[ITERATE], 0, &running);
GST_CAT_LOG_OBJECT (GST_CAT_DATAFLOW, bin, "finished iteration");
@ -1047,44 +1057,3 @@ gst_bin_iterate (GstBin *bin)
return running;
}
/**
* gst_bin_set_pre_iterate_function:
* @bin: #Gstbin to attach to
* @func: callback function to call
* @user_data: user data to put in the function call
*
* Attaches a callback which will be run before every iteration of the bin
*
*/
void
gst_bin_set_pre_iterate_function (GstBin *bin, GstBinPrePostIterateFunction func, gpointer user_data)
{
g_return_if_fail (GST_IS_BIN (bin));
if (!GST_FLAG_IS_SET (bin, GST_BIN_FLAG_MANAGER))
g_warning ("setting pre_iterate on a non MANAGER bin has no effect");
bin->pre_iterate_func = func;
bin->pre_iterate_data = user_data;
}
/**
* gst_bin_set_post_iterate_function:
* @bin: #Gstbin to attach to
* @func: callback function to call
* @user_data: user data to put in the function call
*
* Attaches a callback which will be run after every iteration of the bin
*
*/
void
gst_bin_set_post_iterate_function (GstBin *bin, GstBinPrePostIterateFunction func, gpointer user_data)
{
g_return_if_fail (GST_IS_BIN (bin));
if (!GST_FLAG_IS_SET (bin, GST_BIN_FLAG_MANAGER))
g_warning ("setting post_iterate on a non MANAGER bin has no effect");
bin->post_iterate_func = func;
bin->post_iterate_data = user_data;
}

5
gst/gstbin.h
View file

@ -77,11 +77,6 @@ struct _GstBin {
GstElementState child_states[GST_NUM_STATES];
GstBinPrePostIterateFunction pre_iterate_func;
GstBinPrePostIterateFunction post_iterate_func;
gpointer pre_iterate_data;
gpointer post_iterate_data;
GST_OBJECT_PADDING
};

1
gst/gstmarshal.list
View file

@ -9,3 +9,4 @@ VOID:OBJECT,POINTER
VOID:OBJECT,STRING
VOID:INT,INT
VOID:INT64
BOOLEAN:VOID