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-rw-r--r--gst/smpte/gstmask.c124
1 files changed, 124 insertions, 0 deletions
diff --git a/gst/smpte/gstmask.c b/gst/smpte/gstmask.c
new file mode 100644
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+++ b/gst/smpte/gstmask.c
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+/* 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);
+}