event: Remove CONTEXT downstream event

This is going to be implemented with an upstream query instead
for consistency and simplicity.

gst/gstevent.c

@@ -116,7 +116,6 @@ static GstEventQuarks event_quarks[] = {
   {GST_EVENT_BUFFERSIZE, "buffersize", 0},
   {GST_EVENT_SINK_MESSAGE, "sink-message", 0},
   {GST_EVENT_EOS, "eos", 0},
-  {GST_EVENT_CONTEXT, "context", 0},
   {GST_EVENT_SEGMENT_DONE, "segment-done", 0},
   {GST_EVENT_GAP, "gap", 0},
   {GST_EVENT_QOS, "qos", 0},
@@ -1687,56 +1686,3 @@ gst_event_parse_segment_done (GstEvent * event, GstFormat * format,
   if (position != NULL)
     *position = g_value_get_int64 (val);
 }
-
-/**
- * gst_event_new_context:
- * @context: (transfer full): the #GstContext
- *
- * Create a new context event. The purpose of the context event is
- * to pass a pipeline-local context to downstream elements.
- *
- * Returns: (transfer full): a new #GstEvent
- *
- * Since: 1.2
- */
-GstEvent *
-gst_event_new_context (GstContext * context)
-{
-  GstEvent *event;
-  GstStructure *structure;
-
-  g_return_val_if_fail (context != NULL, NULL);
-
-  GST_CAT_INFO (GST_CAT_EVENT, "creating context event");
-
-  structure = gst_structure_new_id (GST_QUARK (EVENT_SEEK),
-      GST_QUARK (CONTEXT), GST_TYPE_CONTEXT, context, NULL);
-  event = gst_event_new_custom (GST_EVENT_CONTEXT, structure);
-  gst_context_unref (context);
-
-  return event;
-}
-
-/**
- * gst_event_parse_context:
- * @event: The event to query
- * @context: (out) (transfer full): a pointer to store the #GstContext in.
- *
- * Parse the context event. Unref @context after usage.
- *
- * Since: 1.2
- */
-void
-gst_event_parse_context (GstEvent * event, GstContext ** context)
-{
-  const GstStructure *structure;
-
-  g_return_if_fail (GST_IS_EVENT (event));
-  g_return_if_fail (GST_EVENT_TYPE (event) == GST_EVENT_CONTEXT);
-
-  structure = GST_EVENT_STRUCTURE (event);
-  if (context)
-    *context =
-        GST_CONTEXT (g_value_dup_boxed (gst_structure_id_get_value
-            (structure, GST_QUARK (CONTEXT))));
-}

gst/gstevent.h

@@ -99,8 +99,6 @@ typedef enum {
  * @GST_EVENT_GAP: Marks a gap in the datastream.
  * @GST_EVENT_TOC: An event which indicates that a new table of contents (TOC)
  *                 was found or updated.
- * @GST_EVENT_CONTEXT: An event to communicate a #GstContext to other
- *                 elements (Since 1.2)
  * @GST_EVENT_QOS: A quality message. Used to indicate to upstream elements
  *                 that the downstream elements should adjust their processing
  *                 rate.
@@ -149,7 +147,6 @@ typedef enum {
   GST_EVENT_SINK_MESSAGE          = GST_EVENT_MAKE_TYPE (100, FLAG(DOWNSTREAM) | FLAG(SERIALIZED) | FLAG(STICKY) | FLAG(STICKY_MULTI)),
   GST_EVENT_EOS                   = GST_EVENT_MAKE_TYPE (110, FLAG(DOWNSTREAM) | FLAG(SERIALIZED) | FLAG(STICKY)),
   GST_EVENT_TOC                   = GST_EVENT_MAKE_TYPE (120, FLAG(DOWNSTREAM) | FLAG(SERIALIZED) | FLAG(STICKY) | FLAG(STICKY_MULTI)),
-  GST_EVENT_CONTEXT               = GST_EVENT_MAKE_TYPE (130, FLAG(DOWNSTREAM) | FLAG(SERIALIZED) | FLAG(STICKY) | FLAG(STICKY_MULTI)),
 
   /* non-sticky downstream serialized */
   GST_EVENT_SEGMENT_DONE          = GST_EVENT_MAKE_TYPE (150, FLAG(DOWNSTREAM) | FLAG(SERIALIZED)),
@@ -579,10 +576,6 @@ void            gst_event_parse_toc_select      (GstEvent *event, gchar **uid);
 GstEvent*       gst_event_new_segment_done      (GstFormat format, gint64 position) G_GNUC_MALLOC;
 void            gst_event_parse_segment_done    (GstEvent *event, GstFormat *format, gint64 *position);
 
-/* context */
-GstEvent*       gst_event_new_context           (GstContext * context) G_GNUC_MALLOC;
-void            gst_event_parse_context         (GstEvent *event, GstContext **context);
-
 G_END_DECLS
 
 #endif /* __GST_EVENT_H__ */

gst/gstquark.c

@@ -66,7 +66,7 @@ static const gchar *_quark_strings[] = {
   "GstMessageResetTime",
   "GstMessageToc", "GstEventTocGlobal", "GstEventTocCurrent",
   "GstEventSegmentDone",
-  "GstEventStreamStart", "stream-id", "GstEventContext", "GstQueryContext",
+  "GstEventStreamStart", "stream-id", "GstQueryContext",
   "GstMessageNeedContext", "GstMessageHaveContext", "context", "context-types",
   "GstMessageStreamStart", "group-id", "uri-redirection"
 };

gst/gstquark.h

@@ -188,16 +188,15 @@ typedef enum _GstQuarkId
   GST_QUARK_EVENT_SEGMENT_DONE = 159,
   GST_QUARK_EVENT_STREAM_START = 160,
   GST_QUARK_STREAM_ID = 161,
-  GST_QUARK_EVENT_CONTEXT = 162,
+  GST_QUARK_QUERY_CONTEXT = 162,
-  GST_QUARK_QUERY_CONTEXT = 163,
+  GST_QUARK_MESSAGE_NEED_CONTEXT = 163,
-  GST_QUARK_MESSAGE_NEED_CONTEXT = 164,
+  GST_QUARK_MESSAGE_HAVE_CONTEXT = 164,
-  GST_QUARK_MESSAGE_HAVE_CONTEXT = 165,
+  GST_QUARK_CONTEXT = 165,
-  GST_QUARK_CONTEXT = 166,
+  GST_QUARK_CONTEXT_TYPES = 166,
-  GST_QUARK_CONTEXT_TYPES = 167,
+  GST_QUARK_MESSAGE_STREAM_START = 167,
-  GST_QUARK_MESSAGE_STREAM_START = 168,
+  GST_QUARK_GROUP_ID = 168,
-  GST_QUARK_GROUP_ID = 169,
+  GST_QUARK_URI_REDIRECTION = 169,
-  GST_QUARK_URI_REDIRECTION = 170,
+  GST_QUARK_MAX = 170
-  GST_QUARK_MAX = 171
 } GstQuarkId;
 
 extern GQuark _priv_gst_quark_table[GST_QUARK_MAX];