*
* An existing pad of an element can be retrieved by name with
* gst_element_get_static_pad(). A new dynamic pad can be created using
- * gst_element_request_pad() with a #GstPadTemplate or
- * gst_element_get_request_pad() with the template name such as "src_\%u".
+ * gst_element_request_pad() with a #GstPadTemplate.
* An iterator of all pads can be retrieved with gst_element_iterate_pads().
*
* Elements can be linked through their pads.
* #GST_ELEMENT_FLAG_REQUIRE_CLOCK() flag is set, a clock should be set on the
* element with gst_element_set_clock().
*
- * Note that clock slection and distribution is normally handled by the
+ * Note that clock selection and distribution is normally handled by the
* toplevel #GstPipeline so the clock functions are only to be used in very
* specific situations.
- *
- * Last reviewed on 2012-03-28 (0.11.3)
*/
#include "gst_private.h"
#include "gst-i18n-lib.h"
#include "glib-compat-private.h"
+#ifndef GST_DISABLE_GST_DEBUG
+#include "printf/printf.h"
+#endif
+
/* Element signals and args */
enum
{
static gboolean gst_element_post_message_default (GstElement * element,
GstMessage * message);
-
static gboolean gst_element_default_send_event (GstElement * element,
GstEvent * event);
static gboolean gst_element_default_query (GstElement * element,
* @pad: the #GstPad to release.
*
* Makes the element free the previously requested pad as obtained
- * with gst_element_get_request_pad().
+ * with gst_element_request_pad().
*
* This does not unref the pad. If the pad was created by using
- * gst_element_get_request_pad(), gst_element_release_request_pad() needs to be
+ * gst_element_request_pad(), gst_element_release_request_pad() needs to be
* followed by gst_object_unref() to free the @pad.
*
* MT safe.
* <note>An element is only required to provide a clock in the PAUSED
* state. Some elements can provide a clock in other states.</note>
*
- * Returns: (transfer full): the GstClock provided by the element or %NULL
- * if no clock could be provided. Unref after usage.
+ * Returns: (transfer full) (nullable): the GstClock provided by the
+ * element or %NULL if no clock could be provided. Unref after usage.
*
* MT safe.
*/
*
* Gets the index from the element.
*
- * Returns: (transfer full): a #GstIndex or %NULL when no index was set on the
- * element. unref after usage.
+ * Returns: (transfer full) (nullable): a #GstIndex or %NULL when no
+ * index was set on the element. unref after usage.
*
* MT safe.
*/
*
* This function is used by plugin developers and should not be used
* by applications. Pads that were dynamically requested from elements
- * with gst_element_get_request_pad() should be released with the
+ * with gst_element_request_pad() should be released with the
* gst_element_release_request_pad() function instead.
*
* Pads are not automatically deactivated so elements should perform the needed
break;
}
element->pads = g_list_remove (element->pads, pad);
+ GST_OBJECT_FLAG_UNSET (pad, GST_PAD_FLAG_NEED_PARENT);
element->numpads--;
element->pads_cookie++;
GST_OBJECT_UNLOCK (element);
* Retrieves a pad from @element by name. This version only retrieves
* already-existing (i.e. 'static') pads.
*
- * Returns: (transfer full): the requested #GstPad if found, otherwise %NULL.
- * unref after usage.
+ * Returns: (transfer full) (nullable): the requested #GstPad if
+ * found, otherwise %NULL. unref after usage.
*
* MT safe.
*/
* This method is slow and will be deprecated in the future. New code should
* use gst_element_request_pad() with the requested template.
*
- * Returns: (transfer full): requested #GstPad if found, otherwise %NULL.
- * Release after usage.
+ * Returns: (transfer full) (nullable): requested #GstPad if found,
+ * otherwise %NULL. Release after usage.
*/
GstPad *
gst_element_get_request_pad (GstElement * element, const gchar * name)
*
* The pad should be released with gst_element_release_request_pad().
*
- * Returns: (transfer full): requested #GstPad if found, otherwise %NULL.
- * Release after usage.
+ * Returns: (transfer full) (nullable): requested #GstPad if found,
+ * otherwise %NULL. Release after usage.
*/
GstPad *
gst_element_request_pad (GstElement * element,
* that has subclasses, make sure to pass the g_class parameter of the
* #GInstanceInitFunc here.</note>
*
- * Returns: (transfer none): the #GstPadTemplate with the given name, or %NULL
- * if none was found. No unreferencing is necessary.
+ * Returns: (transfer none) (nullable): the #GstPadTemplate with the
+ * given name, or %NULL if none was found. No unreferencing is
+ * necessary.
*/
GstPadTemplate *
gst_element_class_get_pad_template (GstElementClass *
* event handler, the event will be pushed on a random linked sink pad for
* upstream events or a random linked source pad for downstream events.
*
- * This function takes owership of the provided event so you should
+ * This function takes ownership of the provided event so you should
* gst_event_ref() it if you want to reuse the event after this call.
*
* MT safe.
*
* Please note that some queries might need a running pipeline to work.
*
- * Returns: TRUE if the query could be performed.
+ * Returns: %TRUE if the query could be performed.
*
* MT safe.
*/
gboolean
gst_element_query (GstElement * element, GstQuery * query)
{
- GstElementClass *oclass;
- gboolean result = FALSE;
+ GstElementClass *klass;
g_return_val_if_fail (GST_IS_ELEMENT (element), FALSE);
g_return_val_if_fail (query != NULL, FALSE);
- oclass = GST_ELEMENT_GET_CLASS (element);
-
- if (oclass->query) {
+ klass = GST_ELEMENT_GET_CLASS (element);
+ if (klass->query) {
GST_CAT_DEBUG (GST_CAT_ELEMENT_PADS, "send query on element %s",
GST_ELEMENT_NAME (element));
- result = oclass->query (element, query);
+ return klass->query (element, query);
}
- return result;
+
+ return FALSE;
}
static gboolean
GstElementClass *klass;
g_return_val_if_fail (GST_IS_ELEMENT (element), FALSE);
+ g_return_val_if_fail (message != NULL, FALSE);
klass = GST_ELEMENT_GET_CLASS (element);
if (klass->post_message)
/**
* _gst_element_error_printf:
- * @format: the printf-like format to use, or %NULL
+ * @format: (allow-none): the printf-like format to use, or %NULL
*
* This function is only used internally by the gst_element_error() macro.
*
- * Returns: (transfer full): a newly allocated string, or %NULL if the format
- * was %NULL or ""
+ * Returns: (transfer full) (nullable): a newly allocated string, or
+ * %NULL if the format was %NULL or ""
*
* MT safe.
*/
{
va_list args;
gchar *buffer;
+ int len;
if (format == NULL)
return NULL;
return NULL;
va_start (args, format);
- buffer = g_strdup_vprintf (format, args);
+
+ len = __gst_vasprintf (&buffer, format, args);
+
va_end (args);
+
+ if (len < 0)
+ buffer = NULL;
+
return buffer;
}
*
* MT safe.
*
- * Returns: TRUE, if the element's state is locked.
+ * Returns: %TRUE, if the element's state is locked.
*/
gboolean
gst_element_is_locked_state (GstElement * element)
/**
* gst_element_set_locked_state:
* @element: a #GstElement
- * @locked_state: TRUE to lock the element's state
+ * @locked_state: %TRUE to lock the element's state
*
* Locks the state of an element, so state changes of the parent don't affect
* this element anymore.
*
* MT safe.
*
- * Returns: TRUE if the state was changed, FALSE if bad parameters were given
+ * Returns: %TRUE if the state was changed, %FALSE if bad parameters were given
* or the elements state-locking needed no change.
*/
gboolean
* @element: a #GstElement.
*
* Tries to change the state of the element to the same as its parent.
- * If this function returns FALSE, the state of element is undefined.
+ * If this function returns %FALSE, the state of element is undefined.
*
- * Returns: TRUE, if the element's state could be synced to the parent's state.
+ * Returns: %TRUE, if the element's state could be synced to the parent's state.
*
* MT safe.
*/
/**
* gst_element_set_context:
- * @element: a #GstElement to set the bus of.
+ * @element: a #GstElement to set the context of.
* @context: (transfer none): the #GstContext to set.
*
* Sets the context of the element. Increases the refcount of the context.
projects / platform / upstream / gstreamer.git / blobdiff