mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-06-26 09:50:39 +00:00
- make child_state_change a virtual function
Original commit message from CVS: - make child_state_change a virtual function - remove unneeded != NULL checks - implement gst_bin_sync_children_state
This commit is contained in:
Benjamin Otte
parent
78b4079072
commit
64a6a1d2bd
90
gst/gstbin.c
90
gst/gstbin.c
|
|
@ -55,6 +55,8 @@ static void gst_bin_set_index (GstElement *element, GstIndex *index);
|
|||
|
||||
static void gst_bin_add_func (GstBin *bin, GstElement *element);
|
||||
static void gst_bin_remove_func (GstBin *bin, GstElement *element);
|
||||
static void gst_bin_child_state_change_func (GstBin *bin, GstElementState oldstate,
|
||||
GstElementState newstate, GstElement *child);
|
||||
|
||||
static GstClock* gst_bin_get_clock_func (GstElement *element);
|
||||
static void gst_bin_set_clock_func (GstElement *element, GstClock *clock);
|
||||
|
|
@ -144,6 +146,7 @@ gst_bin_class_init (GstBinClass * klass)
|
|||
|
||||
klass->add_element = GST_DEBUG_FUNCPTR (gst_bin_add_func);
|
||||
klass->remove_element = GST_DEBUG_FUNCPTR (gst_bin_remove_func);
|
||||
klass->child_state_change = GST_DEBUG_FUNCPTR (gst_bin_child_state_change_func);
|
||||
klass->iterate = GST_DEBUG_FUNCPTR (gst_bin_iterate_func);
|
||||
}
|
||||
|
||||
|
|
@ -220,7 +223,6 @@ gst_bin_get_clock (GstBin *bin)
|
|||
void
|
||||
gst_bin_use_clock (GstBin *bin, GstClock *clock)
|
||||
{
|
||||
g_return_if_fail (bin != NULL);
|
||||
g_return_if_fail (GST_IS_BIN (bin));
|
||||
|
||||
gst_bin_set_clock_func (GST_ELEMENT (bin), clock);
|
||||
|
|
@ -235,7 +237,6 @@ gst_bin_use_clock (GstBin *bin, GstClock *clock)
|
|||
void
|
||||
gst_bin_auto_clock (GstBin *bin)
|
||||
{
|
||||
g_return_if_fail (bin != NULL);
|
||||
g_return_if_fail (GST_IS_BIN (bin));
|
||||
|
||||
if (GST_ELEMENT_SCHED (bin))
|
||||
|
|
@ -384,8 +385,6 @@ gst_bin_add_many (GstBin *bin, GstElement *element_1, ...)
|
|||
{
|
||||
va_list args;
|
||||
|
||||
g_return_if_fail (bin != NULL);
|
||||
g_return_if_fail (element_1 != NULL);
|
||||
g_return_if_fail (GST_IS_BIN (bin));
|
||||
g_return_if_fail (GST_IS_ELEMENT (element_1));
|
||||
|
||||
|
|
@ -459,9 +458,7 @@ gst_bin_add (GstBin *bin, GstElement *element)
|
|||
{
|
||||
GstBinClass *bclass;
|
||||
|
||||
g_return_if_fail (bin != NULL);
|
||||
g_return_if_fail (GST_IS_BIN (bin));
|
||||
g_return_if_fail (element != NULL);
|
||||
g_return_if_fail (GST_IS_ELEMENT (element));
|
||||
|
||||
GST_DEBUG (GST_CAT_PARENTAGE, "adding element \"%s\" to bin \"%s\"",
|
||||
|
|
@ -540,9 +537,7 @@ gst_bin_remove (GstBin *bin, GstElement *element)
|
|||
|
||||
GST_DEBUG_ELEMENT (GST_CAT_PARENTAGE, bin, "trying to remove child %s", GST_ELEMENT_NAME (element));
|
||||
|
||||
g_return_if_fail (bin != NULL);
|
||||
g_return_if_fail (GST_IS_BIN (bin));
|
||||
g_return_if_fail (element != NULL);
|
||||
g_return_if_fail (GST_IS_ELEMENT (element));
|
||||
g_return_if_fail (bin->children != NULL);
|
||||
|
||||
|
|
@ -572,8 +567,6 @@ gst_bin_remove_many (GstBin *bin, GstElement *element_1, ...)
|
|||
{
|
||||
va_list args;
|
||||
|
||||
g_return_if_fail (bin != NULL);
|
||||
g_return_if_fail (element_1 != NULL);
|
||||
g_return_if_fail (GST_IS_BIN (bin));
|
||||
g_return_if_fail (GST_IS_ELEMENT (element_1));
|
||||
|
||||
|
|
@ -599,15 +592,35 @@ gst_bin_remove_many (GstBin *bin, GstElement *element_1, ...)
|
|||
* of a child.
|
||||
*/
|
||||
void
|
||||
gst_bin_child_state_change (GstBin *bin, GstElementState oldstate, GstElementState newstate,
|
||||
GstElement *child)
|
||||
gst_bin_child_state_change (GstBin *bin, GstElementState oldstate,
|
||||
GstElementState newstate, GstElement *child)
|
||||
{
|
||||
gint old_idx = 0, new_idx = 0, i;
|
||||
GstBinClass *bclass;
|
||||
|
||||
g_return_if_fail (GST_IS_BIN (bin));
|
||||
g_return_if_fail (GST_IS_ELEMENT (child));
|
||||
|
||||
GST_INFO (GST_CAT_STATES, "child %s changed state in bin %s from %s to %s",
|
||||
GST_ELEMENT_NAME (child), GST_ELEMENT_NAME (bin),
|
||||
gst_element_state_get_name (oldstate), gst_element_state_get_name (newstate));
|
||||
|
||||
bclass = GST_BIN_GET_CLASS (bin);
|
||||
|
||||
if (bclass->child_state_change) {
|
||||
bclass->child_state_change (bin, oldstate, newstate, child);
|
||||
}
|
||||
else {
|
||||
g_warning ("cannot signal state change of child %s to bin %s\n",
|
||||
GST_ELEMENT_NAME (child), GST_ELEMENT_NAME (bin));
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
gst_bin_child_state_change_func (GstBin *bin, GstElementState oldstate,
|
||||
GstElementState newstate, GstElement *child)
|
||||
{
|
||||
gint old_idx = 0, new_idx = 0, i;
|
||||
|
||||
while (oldstate >>= 1) old_idx++;
|
||||
while (newstate >>= 1) new_idx++;
|
||||
|
||||
|
|
@ -843,12 +856,60 @@ gst_bin_get_by_name_recurse_up (GstBin * bin, const gchar * name)
|
|||
const GList *
|
||||
gst_bin_get_list (GstBin * bin)
|
||||
{
|
||||
g_return_val_if_fail (bin != NULL, NULL);
|
||||
g_return_val_if_fail (GST_IS_BIN (bin), NULL);
|
||||
|
||||
return bin->children;
|
||||
}
|
||||
|
||||
/**
|
||||
* gst_bin_sync_children_state:
|
||||
* @bin: #Gstbin to sync state
|
||||
*
|
||||
* Tries to set the state of the children of this bin to the same state of the
|
||||
* bin by calling gst_element_set_state for each child not already having a
|
||||
* synchronized state.
|
||||
*
|
||||
* Returns: The worst return value of any gst_element_set_state. So if one child
|
||||
* returns #GST_STATE_FAILURE while all others return #GST_STATE_SUCCESS
|
||||
* this function returns #GST_STATE_FAILURE.
|
||||
*/
|
||||
GstElementStateReturn
|
||||
gst_bin_sync_children_state (GstBin *bin)
|
||||
{
|
||||
GList *children;
|
||||
GstElement *element;
|
||||
GstElementState state;
|
||||
GstElementStateReturn ret = GST_STATE_SUCCESS;
|
||||
|
||||
g_return_val_if_fail (GST_IS_BIN (bin), GST_STATE_FAILURE);
|
||||
|
||||
state = GST_STATE (bin);
|
||||
children = bin->children;
|
||||
GST_INFO (GST_CAT_STATES, "syncing state of children with bin \"%s\"'s state %s",
|
||||
GST_ELEMENT_NAME (bin), gst_element_state_get_name (state));
|
||||
|
||||
while (children) {
|
||||
element = GST_ELEMENT (children->data);
|
||||
children = children->next;
|
||||
if (GST_STATE(element) != state) {
|
||||
switch (gst_element_set_state (element, state)) {
|
||||
case GST_STATE_SUCCESS:
|
||||
break;
|
||||
case GST_STATE_ASYNC:
|
||||
if (ret == GST_STATE_SUCCESS)
|
||||
ret = GST_STATE_ASYNC;
|
||||
break;
|
||||
case GST_STATE_FAILURE:
|
||||
ret = GST_STATE_FAILURE;
|
||||
default:
|
||||
/* make sure gst_element_set_state never returns this */
|
||||
g_assert_not_reached ();
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
#ifndef GST_DISABLE_LOADSAVE
|
||||
static xmlNodePtr
|
||||
gst_bin_save_thyself (GstObject * object, xmlNodePtr parent)
|
||||
|
|
@ -1022,4 +1083,3 @@ gst_bin_set_post_iterate_function (GstBin *bin, GstBinPrePostIterateFunction fun
|
|||
bin->post_iterate_func = func;
|
||||
bin->post_iterate_data = user_data;
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -91,6 +91,8 @@ struct _GstBinClass {
|
|||
/* vtable */
|
||||
void (*add_element) (GstBin *bin, GstElement *element);
|
||||
void (*remove_element) (GstBin *bin, GstElement *element);
|
||||
void (*child_state_change) (GstBin *bin, GstElementState oldstate,
|
||||
GstElementState newstate, GstElement *element);
|
||||
|
||||
/* run a full iteration of operation */
|
||||
gboolean (*iterate) (GstBin *bin);
|
||||
|
|
@ -122,6 +124,8 @@ void gst_bin_use_clock (GstBin *bin, GstClock *clock);
|
|||
GstClock* gst_bin_get_clock (GstBin *bin);
|
||||
void gst_bin_auto_clock (GstBin *bin);
|
||||
|
||||
GstElementStateReturn gst_bin_sync_children_state (GstBin *bin);
|
||||
|
||||
/* internal */
|
||||
/* one of our childs signaled a state change */
|
||||
void gst_bin_child_state_change (GstBin *bin, GstElementState oldstate,
|
||||
|
|
@ -138,4 +142,3 @@ G_END_DECLS
|
|||
|
||||
|
||||
#endif /* __GST_BIN_H__ */
|
||||
|
||||
|
|
|
|||
Loading…
Reference in a new issue