--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gst_plugins_base/gst/adder/gstadder.h	Thu Dec 17 08:53:32 2009 +0200
@@ -0,0 +1,105 @@
+/* GStreamer
+ * Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
+ *                    2000 Wim Taymans <wtay@chello.be>
+ *
+ * gstadder.h: Header for GstAdder element
+ *
+ * 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.
+ */
+
+#ifndef __GST_ADDER_H__
+#define __GST_ADDER_H__
+
+#include <gst/gst.h>
+#include <gst/base/gstcollectpads.h>
+
+G_BEGIN_DECLS
+
+#define GST_TYPE_ADDER            (gst_adder_get_type())
+#define GST_ADDER(obj)            (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_ADDER,GstAdder))
+#define GST_IS_ADDER(obj)         (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_ADDER))
+#define GST_ADDER_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST((klass) ,GST_TYPE_ADDER,GstAdderClass))
+#define GST_IS_ADDER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass) ,GST_TYPE_ADDER))
+#define GST_ADDER_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS((obj) ,GST_TYPE_ADDER,GstAdderClass))
+
+typedef struct _GstAdder             GstAdder;
+typedef struct _GstAdderClass        GstAdderClass;
+typedef struct _GstAdderInputChannel GstAdderInputChannel;
+
+typedef enum {
+  GST_ADDER_FORMAT_UNSET,
+  GST_ADDER_FORMAT_INT,
+  GST_ADDER_FORMAT_FLOAT
+} GstAdderFormat;
+
+typedef void (*GstAdderFunction) (gpointer out, gpointer in, guint size);
+
+/**
+ * GstAdder:
+ *
+ * The adder object structure.
+ */
+struct _GstAdder {
+  GstElement      element;
+
+  GstPad         *srcpad;
+  GstCollectPads *collect;
+  /* pad counter, used for creating unique request pads */
+  gint            padcount;
+
+  /* the next are valid for both int and float */
+  GstAdderFormat  format;
+  gint            rate;
+  gint            channels;
+  gint            width;
+  gint            endianness;
+
+  /* the next are valid only for format == GST_ADDER_FORMAT_INT */
+  gint            depth;
+  gboolean        is_signed;
+
+  /* number of bytes per sample, actually width/8 * channels */
+  gint            bps;
+
+  /* function to add samples */
+  GstAdderFunction func;
+
+  /* counters to keep track of timestamps */
+  gint64          timestamp;
+  gint64          offset;
+
+  /* sink event handling */
+  GstPadEventFunction  collect_event;
+  GstSegment      segment;
+  gboolean        segment_pending;
+  guint64         segment_position;
+  gdouble         segment_rate;
+};
+
+struct _GstAdderClass {
+  GstElementClass parent_class;
+};
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+
+GType    gst_adder_get_type (void);
+
+G_END_DECLS
+
+
+#endif /* __GST_ADDER_H__ */