X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=gst%2Fgstevent.c;h=f4bb816863e76472dc42ee663df5ced874b1e40d;hb=b99bca2790e0e63ce573ad2b9a0aa5a72995fa76;hp=815898f5938864ee2422bd3ee172d33e4cdcf58a;hpb=a87b4551a6090663a1714f263d4e20fe75eb46ca;p=platform%2Fupstream%2Fgstreamer.git

diff --git a/gst/gstevent.c b/gst/gstevent.c
index 815898f..f4bb816 100644
--- a/gst/gstevent.c
+++ b/gst/gstevent.c
@@ -228,6 +228,9 @@ _gst_event_free (GstEvent * event)
     gst_structure_set_parent_refcount (s, NULL);
     gst_structure_free (s);
   }
+#ifdef USE_POISONING
+  memset (event, 0xff, sizeof (GstEventImpl));
+#endif
 
   g_slice_free1 (sizeof (GstEventImpl), event);
 }
@@ -293,7 +296,7 @@ gst_event_init (GstEventImpl * event, GstEventType type)
  * New custom events can also be created by subclassing the event type if
  * needed.
  *
- * Returns: (transfer full): the new custom event.
+ * Returns: (transfer full) (nullable): the new custom event.
  */
 GstEvent *
 gst_event_new_custom (GstEventType type, GstStructure * structure)
@@ -333,9 +336,9 @@ had_parent:
  *
  * Access the structure of the event.
  *
- * Returns: The structure of the event. The structure is still
- * owned by the event, which means that you should not free it and
- * that the pointer becomes invalid when you free the event.
+ * Returns: (transfer none) (nullable): The structure of the event. The
+ * structure is still owned by the event, which means that you should not free
+ * it and that the pointer becomes invalid when you free the event.
  *
  * MT safe.
  */
@@ -448,6 +451,8 @@ void
 gst_event_set_seqnum (GstEvent * event, guint32 seqnum)
 {
   g_return_if_fail (GST_IS_EVENT (event));
+  g_return_if_fail (seqnum != GST_SEQNUM_INVALID);
+  g_return_if_fail (gst_event_is_writable (event));
 
   GST_EVENT_SEQNUM (event) = seqnum;
 }
@@ -496,6 +501,7 @@ void
 gst_event_set_running_time_offset (GstEvent * event, gint64 offset)
 {
   g_return_if_fail (GST_IS_EVENT (event));
+  g_return_if_fail (gst_event_is_writable (event));
 
   ((GstEventImpl *) event)->running_time_offset = offset;
 }
@@ -591,9 +597,12 @@ gst_event_parse_flush_stop (GstEvent * event, gboolean * reset_time)
  * The list of @streams corresponds to the "Stream ID" of each stream to be
  * activated. Those ID can be obtained via the #GstStream objects present
  * in #GST_EVENT_STREAM_START, #GST_EVENT_STREAM_COLLECTION or
- * #GST_MESSSAGE_STREAM_COLLECTION.
+ * #GST_MESSAGE_STREAM_COLLECTION.
+ *
+ * Note: The list of @streams can not be empty.
  *
- * Returns: (transfer full): a new select-streams event.
+ * Returns: (transfer full): a new select-streams event or %NULL in case of
+ * an error (like an empty streams list).
  *
  * Since: 1.10
  */
@@ -605,6 +614,8 @@ gst_event_new_select_streams (GList * streams)
   GstStructure *struc;
   GList *tmpl;
 
+  g_return_val_if_fail (streams != NULL, NULL);
+
   GST_CAT_INFO (GST_CAT_EVENT, "Creating new select-streams event");
   struc = gst_structure_new_id_empty (GST_QUARK (EVENT_SELECT_STREAMS));
   g_value_init (&val, GST_TYPE_LIST);
@@ -796,7 +807,7 @@ gst_event_parse_gap (GstEvent * event, GstClockTime * timestamp,
  * synchronized with the buffer flow and contains the format of the buffers
  * that will follow after the event.
  *
- * Returns: (transfer full): the new CAPS event.
+ * Returns: (transfer full) (nullable): the new CAPS event.
  */
 GstEvent *
 gst_event_new_caps (GstCaps * caps)
@@ -874,7 +885,7 @@ gst_event_parse_caps (GstEvent * event, GstCaps ** caps)
  *
  *   time + (TIMESTAMP(buf) - start) * ABS (rate * applied_rate)
  *
- * Returns: (transfer full): the new SEGMENT event.
+ * Returns: (transfer full) (nullable): the new SEGMENT event.
  */
 GstEvent *
 gst_event_new_segment (const GstSegment * segment)
@@ -1123,7 +1134,7 @@ gst_event_parse_buffer_size (GstEvent * event, GstFormat * format,
  * The application can use general event probes to intercept the QoS
  * event and implement custom application specific QoS handling.
  *
- * Returns: (transfer full): a new QOS event.
+ * Returns: (transfer full) (nullable): a new QOS event.
  */
 GstEvent *
 gst_event_new_qos (GstQOSType type, gdouble proportion,
@@ -1249,7 +1260,7 @@ gst_event_parse_qos (GstEvent * event, GstQOSType * type,
  * #GST_QUERY_POSITION and update the playback segment current position with a
  * #GST_SEEK_TYPE_SET to the desired position.
  *
- * Returns: (transfer full): a new seek event.
+ * Returns: (transfer full) (nullable): a new seek event.
  */
 GstEvent *
 gst_event_new_seek (gdouble rate, GstFormat format, GstSeekFlags flags,
@@ -1260,6 +1271,18 @@ gst_event_new_seek (gdouble rate, GstFormat format, GstSeekFlags flags,
 
   g_return_val_if_fail (rate != 0.0, NULL);
 
+  /* SNAP flags only make sense in combination with the KEYUNIT flag. Warn
+   * and unset the SNAP flags if they're set without the KEYUNIT flag */
+  if (!(flags & GST_SEEK_FLAG_KEY_UNIT) &&
+      (flags & (GST_SEEK_FLAG_SNAP_BEFORE | GST_SEEK_FLAG_SNAP_AFTER |
+              GST_SEEK_FLAG_SNAP_NEAREST))) {
+    g_warning ("SNAP seeks only work in combination with the KEY_UNIT "
+        "flag, ignoring SNAP flags");
+    flags &=
+        ~(GST_SEEK_FLAG_SNAP_BEFORE | GST_SEEK_FLAG_SNAP_AFTER |
+        GST_SEEK_FLAG_SNAP_NEAREST);
+  }
+
   if (format == GST_FORMAT_TIME) {
     GST_CAT_INFO (GST_CAT_EVENT,
         "creating seek rate %lf, format TIME, flags %d, "
@@ -1283,7 +1306,9 @@ gst_event_new_seek (gdouble rate, GstFormat format, GstSeekFlags flags,
       GST_QUARK (CUR_TYPE), GST_TYPE_SEEK_TYPE, start_type,
       GST_QUARK (CUR), G_TYPE_INT64, start,
       GST_QUARK (STOP_TYPE), GST_TYPE_SEEK_TYPE, stop_type,
-      GST_QUARK (STOP), G_TYPE_INT64, stop, NULL);
+      GST_QUARK (STOP), G_TYPE_INT64, stop,
+      GST_QUARK (TRICKMODE_INTERVAL), GST_TYPE_CLOCK_TIME, (GstClockTime) 0,
+      NULL);
   event = gst_event_new_custom (GST_EVENT_SEEK, structure);
 
   return event;
@@ -1344,6 +1369,48 @@ gst_event_parse_seek (GstEvent * event, gdouble * rate,
 }
 
 /**
+ * gst_event_set_seek_trickmode_interval:
+ *
+ * Sets a trickmode interval on a (writable) seek event. Elements
+ * that support TRICKMODE_KEY_UNITS seeks SHOULD use this as the minimal
+ * interval between each frame they may output.
+ *
+ * Since: 1.16
+ */
+void
+gst_event_set_seek_trickmode_interval (GstEvent * event, GstClockTime interval)
+{
+  g_return_if_fail (event != NULL);
+  g_return_if_fail (GST_EVENT_TYPE (event) == GST_EVENT_SEEK);
+  g_return_if_fail (gst_event_is_writable (event));
+  g_return_if_fail (GST_CLOCK_TIME_IS_VALID (interval));
+
+  gst_structure_id_set (GST_EVENT_STRUCTURE (event),
+      GST_QUARK (TRICKMODE_INTERVAL), GST_TYPE_CLOCK_TIME, interval, NULL);
+}
+
+/**
+ * gst_event_parse_seek_trickmode_interval:
+ * @interval: (out)
+ *
+ * Retrieve the trickmode interval that may have been set on a
+ * seek event with gst_event_set_seek_trickmode_interval().
+ *
+ * Since: 1.16
+ */
+void
+gst_event_parse_seek_trickmode_interval (GstEvent * event,
+    GstClockTime * interval)
+{
+  g_return_if_fail (event != NULL);
+  g_return_if_fail (interval != NULL);
+  g_return_if_fail (GST_EVENT_TYPE (event) == GST_EVENT_SEEK);
+
+  gst_structure_id_get (GST_EVENT_STRUCTURE (event),
+      GST_QUARK (TRICKMODE_INTERVAL), GST_TYPE_CLOCK_TIME, interval, NULL);
+}
+
+/**
  * gst_event_new_navigation:
  * @structure: (transfer full): description of the event. The event will take
  *     ownership of the structure.
@@ -1430,7 +1497,7 @@ gst_event_parse_latency (GstEvent * event, GstClockTime * latency)
  * The @intermediate flag instructs the pipeline that this step operation is
  * part of a larger step operation.
  *
- * Returns: (transfer full): a new #GstEvent
+ * Returns: (transfer full) (nullable): a new #GstEvent
  */
 GstEvent *
 gst_event_new_step (GstFormat format, guint64 amount, gdouble rate,
@@ -1660,7 +1727,7 @@ gst_event_set_stream (GstEvent * event, GstStream * stream)
 /**
  * gst_event_parse_stream:
  * @event: a stream-start event
- * @stream: (out) (transfer full): adress of variable to store the stream
+ * @stream: (out) (transfer full): address of variable to store the stream
  *
  * Parse a stream-start @event and extract the #GstStream from it.
  *
@@ -2010,7 +2077,7 @@ gst_event_new_protection (const gchar * system_id,
  * string uniquely identifying a content protection system.
  * @data: (out) (allow-none) (transfer none): pointer to store a #GstBuffer
  * holding protection system specific information.
- * @origin: (allow-none) (transfer none): pointer to store a value that
+ * @origin: (out) (allow-none) (transfer none): pointer to store a value that
  * indicates where the protection information carried by @event was extracted
  * from.
  *