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pad: Add API to get the current state of a task

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Avoiding the user to need to deal with the locking himself etc.

API:
  gst_pad_task_get_state

https://bugzilla.gnome.org/show_bug.cgi?id=778830
This commit is contained in:
Thibault Saunier 2017-02-17 15:48:17 -03:00
parent d6dba3fd6f
commit 6326c764ee
3 changed files with 36 additions and 0 deletions
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1
docs/gst/gstreamer-sections.txt
View file

@ -2058,6 +2058,7 @@ gst_pad_chain_list
gst_pad_start_task
gst_pad_pause_task
gst_pad_stop_task
gst_pad_task_get_state
gst_pad_set_active

34
gst/gstpad.c
View file

@ -6069,6 +6069,40 @@ no_task:
}
}
/**
* gst_pad_get_task_state:
* @pad: the #GstPad to get task state from
*
* Get @pad task state. If no task is currently
* set, GST_TASK_STOPPED is returned.
*
* Returns: The current state of @pad's task.
*/
GstTaskState
gst_pad_get_task_state (GstPad * pad)
{
GstTask *task;
GstTaskState res;
g_return_val_if_fail (GST_IS_PAD (pad), GST_TASK_STOPPED);
GST_OBJECT_LOCK (pad);
task = GST_PAD_TASK (pad);
if (task == NULL)
goto no_task;
res = gst_task_get_state (task);
GST_OBJECT_UNLOCK (pad);
return res;
no_task:
{
GST_DEBUG_OBJECT (pad, "pad has no task");
GST_OBJECT_UNLOCK (pad);
return GST_TASK_STOPPED;
}
}
/**
* gst_pad_stop_task:
* @pad: the #GstPad to stop the task of

1
gst/gstpad.h
View file

@ -1417,6 +1417,7 @@ gboolean gst_pad_start_task (GstPad *pad, GstTaskFunction func,
gpointer user_data, GDestroyNotify notify);
gboolean gst_pad_pause_task (GstPad *pad);
gboolean gst_pad_stop_task (GstPad *pad);
GstTaskState gst_pad_get_task_state (GstPad *pad);
/* internal links */
void gst_pad_set_iterate_internal_links_function_full (GstPad * pad,