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gstbin.c: modified so create_plan occurs after the state change of all the child elements.

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Original commit message from CVS:
gstbin.c: modified so create_plan occurs after the state change of all the
child elements.
gstelement.c: set_state now loops such that each element only deals with
one state change at a time, i.e. NULL->READY,READY->PLAYING,
instead of a single NULL->PLAYING.
This commit is contained in:
Erik Walthinsen 2000-11-23 08:13:43 +00:00
parent 587051a384
commit 4638451539
2 changed files with 24 additions and 15 deletions
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16
gst/gstbin.c
View file

@ -221,14 +221,6 @@ gst_bin_change_state (GstElement *element)
_gst_print_statename (GST_STATE (element)), GST_STATE_PENDING (element),
_gst_print_statename (GST_STATE_PENDING (element)));
if (GST_STATE_PENDING (element) == GST_STATE_READY) {
GstObject *parent;
parent = gst_object_get_parent (GST_OBJECT (element));
if (!parent || !GST_IS_BIN (parent))
gst_bin_create_plan (bin);
}
// g_return_val_if_fail(bin->numchildren != 0, GST_STATE_FAILURE);
// g_print("-->\n");
@ -253,6 +245,14 @@ gst_bin_change_state (GstElement *element)
}
// g_print("<-- \"%s\"\n",gst_object_get_name(GST_OBJECT(bin)));
if (GST_STATE_PENDING (element) == GST_STATE_READY) {
GstObject *parent;
parent = gst_object_get_parent (GST_OBJECT (element));
if (!parent || !GST_IS_BIN (parent))
gst_bin_create_plan (bin);
}
return gst_bin_change_state_norecurse (bin);
}

23
gst/gstelement.c
View file

@ -307,6 +307,7 @@ gint
gst_element_set_state (GstElement *element, GstElementState state)
{
GstElementClass *oclass;
GstElementState curpending;
GstElementStateReturn return_val = GST_STATE_SUCCESS;
// g_print("gst_element_set_state(\"%s\",%08lx)\n",
@ -315,14 +316,22 @@ gst_element_set_state (GstElement *element, GstElementState state)
g_return_val_if_fail (element != NULL, GST_STATE_FAILURE);
g_return_val_if_fail (GST_IS_ELEMENT (element), GST_STATE_FAILURE);
// first we set the pending state variable
// FIXME should probably check to see that we don't already have one
GST_STATE_PENDING (element) = state;
curpending = GST_STATE(element);
while (GST_STATE(element) != state) {
if (curpending < state) curpending++;
else curpending--;
// now we call the state change function so it can set the state
oclass = GST_ELEMENT_CLASS (GTK_OBJECT (element)->klass);
if (oclass->change_state)
return_val = (oclass->change_state)(element);
// first we set the pending state variable
// FIXME should probably check to see that we don't already have one
GST_STATE_PENDING (element) = curpending;
// now we call the state change function so it can set the state
oclass = GST_ELEMENT_CLASS (GTK_OBJECT (element)->klass);
if (oclass->change_state)
return_val = (oclass->change_state)(element);
if (return_val == GST_STATE_FAILURE) return return_val;
}
return return_val;
}