2 * Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
3 * 2000 Wim Taymans <wtay@chello.be>
5 * gstadder.h: Header for GstAdder element
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Library General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Library General Public License for more details.
17 * You should have received a copy of the GNU Library General Public
18 * License along with this library; if not, write to the
19 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
20 * Boston, MA 02111-1307, USA.
23 #ifndef __GST_ADDER_H__
24 #define __GST_ADDER_H__
27 #include <gst/base/gstcollectpads.h>
31 #define GST_TYPE_ADDER (gst_adder_get_type())
32 #define GST_ADDER(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_ADDER,GstAdder))
33 #define GST_IS_ADDER(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_ADDER))
34 #define GST_ADDER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass) ,GST_TYPE_ADDER,GstAdderClass))
35 #define GST_IS_ADDER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass) ,GST_TYPE_ADDER))
36 #define GST_ADDER_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS((obj) ,GST_TYPE_ADDER,GstAdderClass))
38 typedef struct _GstAdder GstAdder;
39 typedef struct _GstAdderClass GstAdderClass;
40 typedef struct _GstAdderInputChannel GstAdderInputChannel;
43 GST_ADDER_FORMAT_UNSET,
45 GST_ADDER_FORMAT_FLOAT
48 typedef void (*GstAdderFunction) (gpointer out, gpointer in, guint size);
53 * The adder object structure.
59 GstCollectPads *collect;
60 /* pad counter, used for creating unique request pads */
63 /* the next are valid for both int and float */
64 GstAdderFormat format;
71 /* the next are valid only for format == GST_ADDER_FORMAT_INT */
75 /* number of bytes per sample, actually width/8 * channels */
78 /* function to add samples */
79 GstAdderFunction func;
81 /* counters to keep track of timestamps */
84 /* sink event handling */
85 GstPadEventFunction collect_event;
87 gboolean segment_pending;
88 /* src event handling */
89 gboolean flush_stop_pending;
94 /* Pending inline events */
95 GList *pending_events;
98 struct _GstAdderClass {
99 GstElementClass parent_class;
102 GType gst_adder_get_type (void);
107 #endif /* __GST_ADDER_H__ */