1 files changed, 108 insertions, 0 deletions
diff --git a/gst/mxf/mxfessence.c b/gst/mxf/mxfessence.c
new file mode 100644
index 00000000..39350ad5
--- /dev/null
+++ b/gst/mxf/mxfessence.c
@@ -0,0 +1,108 @@
+/* GStreamer
+ * Copyright (C) 2009 Sebastian Dröge <sebastian.droege@collabora.co.uk>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <gst/gst.h>
+#include <string.h>
+
+#include "mxfessence.h"
+
+GST_DEBUG_CATEGORY_EXTERN (mxf_debug);
+#define GST_CAT_DEFAULT mxf_debug
+
+static GSList *_mxf_essence_element_handler_registry = NULL;
+
+void
+mxf_essence_element_handler_register (const MXFEssenceElementHandler * handler)
+{
+  _mxf_essence_element_handler_registry =
+      g_slist_prepend (_mxf_essence_element_handler_registry,
+      (gpointer) handler);
+}
+
+const MXFEssenceElementHandler *
+mxf_essence_element_handler_find (const MXFMetadataTimelineTrack * track)
+{
+  GSList *l;
+  const MXFEssenceElementHandler *ret = NULL;
+
+  for (l = _mxf_essence_element_handler_registry; l; l = l->next) {
+    MXFEssenceElementHandler *current = l->data;
+
+    if (current->handles_track (track)) {
+      ret = current;
+    }
+  }
+
+  return ret;
+}
+
+static GList *_essence_element_writer_registry = NULL;
+static GPtrArray *_essence_element_writer_pad_templates = NULL;
+
+void
+mxf_essence_element_writer_register (const MXFEssenceElementWriter * writer)
+{
+  _essence_element_writer_registry =
+      g_list_prepend (_essence_element_writer_registry, (gpointer) writer);
+
+  if (!_essence_element_writer_pad_templates)
+    _essence_element_writer_pad_templates = g_ptr_array_new ();
+
+  if (_essence_element_writer_pad_templates->len > 0 &&
+      g_ptr_array_index (_essence_element_writer_pad_templates,
+          _essence_element_writer_pad_templates->len - 1) == NULL)
+    g_ptr_array_remove_index (_essence_element_writer_pad_templates,
+        _essence_element_writer_pad_templates->len - 1);
+
+  g_ptr_array_add (_essence_element_writer_pad_templates,
+      (gpointer) writer->pad_template);
+}
+
+const GstPadTemplate **
+mxf_essence_element_writer_get_pad_templates (void)
+{
+  if (!_essence_element_writer_pad_templates
+      || _essence_element_writer_pad_templates->len == 0)
+    return NULL;
+
+  if (g_ptr_array_index (_essence_element_writer_pad_templates,
+          _essence_element_writer_pad_templates->len - 1))
+    g_ptr_array_add (_essence_element_writer_pad_templates, NULL);
+
+  return (const GstPadTemplate **) _essence_element_writer_pad_templates->pdata;
+}
+
+const MXFEssenceElementWriter *
+mxf_essence_element_writer_find (const GstPadTemplate * templ)
+{
+  GList *l = _essence_element_writer_registry;
+
+  for (; l; l = l->next) {
+    MXFEssenceElementWriter *writer = l->data;
+
+    if (writer->pad_template == templ)
+      return writer;
+  }
+
+  return NULL;
+}