Added the base framework for the SMPTE transitions and wipes.

Original commit message from CVS:
Added the base framework for the SMPTE transitions and wipes.

1 files changed, 124 insertions, 0 deletions

diff --git a/gst/smpte/gstmask.c b/gst/smpte/gstmask.c
new file mode 100644
index 00000000..a26d7190
--- /dev/null
+++ b/gst/smpte/gstmask.c
@@ -0,0 +1,124 @@
+/* GStreamer
+ * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
+ *
+ * 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.
+ */
+
+
+#include "gstmask.h"
+
+extern void _gst_barboxwipes_register (void);
+
+static GList *masks = NULL;
+
+void
+_gst_mask_init (void)
+{
+  _gst_barboxwipes_register ();
+}
+
+static gint
+gst_mask_compare (GstMaskDefinition *def1,
+		  GstMaskDefinition *def2)
+{
+  return (def1->type - def2->type);
+}
+
+void
+_gst_mask_register (GstMaskDefinition *definition)
+{
+  masks = g_list_insert_sorted (masks, definition, (GCompareFunc) gst_mask_compare);
+}
+
+const GList*
+gst_mask_get_definitions (void)
+{
+  return masks;
+}
+
+static GstMaskDefinition*
+gst_mask_find_definition (gint type)
+{
+  GList *walk = masks;
+
+  while (walk) {
+    GstMaskDefinition *def = (GstMaskDefinition *) walk->data;
+
+    if (def->type == type)
+      return def;
+    
+    walk = g_list_next (walk);
+  }
+  return NULL;
+}
+
+GstMask*
+gst_mask_factory_new (gint type, gint bpp, gint width, gint height)
+{
+  GstMaskDefinition *definition;
+  GstMask *mask = NULL;
+
+  definition = gst_mask_find_definition (type);
+  if (definition) {
+    mask = definition->new_func (definition, bpp, width, height);
+  }
+
+  return mask;
+}
+
+GstMask*
+_gst_mask_default_new (GstMaskDefinition *definition,
+		       gint bpp, gint width, gint height)
+{
+  GstMask *mask;
+
+  mask = g_new0 (GstMask, 1);
+
+  mask->type = definition->type;
+  mask->bpp = bpp;
+  mask->width = width;
+  mask->height = height;
+  mask->update_func = definition->update_func;
+  mask->destroy_func = definition->destroy_func;
+  mask->data = g_malloc (width * height * (bpp+7)>>3);
+  
+  return mask;
+}
+
+void
+_gst_mask_default_destroy (GstMask *mask)
+{
+  g_free (mask->data);
+  g_free (mask);
+}
+
+void
+gst_mask_destroy (GstMask *mask)
+{
+  if (mask->destroy_func)
+    mask->destroy_func (mask);
+}
+
+void
+gst_mask_update (GstMask *mask,
+		 GstClockTime position, 
+		 GstClockTime duration)
+{
+  g_return_if_fail (mask != NULL);
+
+  if (mask->update_func)
+    mask->update_func (mask, position, duration);
+}