+2005-11-21 Tim-Philipp Müller <tim at centricular dot net>
+
+ * gst/gstmessage.c:
+ Improve docs for DURATION message (usage of duration parameter)
+ (#320113)
+
2005-11-20 Wim Taymans <wim@fluendo.com>
* check/Makefile.am:
* Create a new duration message. This message is posted by elements that
* know the duration of a stream in a specific format. This message
* is received by bins and is used to calculate the total duration of a
- * pipeline.
+ * pipeline. Elements may post a duration message with a duration of
+ * GST_CLOCK_TIME_NONE to indicate that the duration has changed and the
+ * cached duration should be discarded. The new duration can then be
+ * retrieved via a query.
*
* Returns: The new duration message.
*
* @format: Result location for the format
* @duration: Result location for the duration
*
- * Extracts the duration and format from the duration message.
+ * Extracts the duration and format from the duration message. The duration
+ * might be GST_CLOCK_TIME_NONE, which indicates that the duration has
+ * changed. Applications should always use a query to retrieve the duration
+ * of a pipeline.
*
* MT safe.
*/