gstreamer/gst/adder/gstadder.h
Wim Taymans 80d4778bd4 gst/adder/: Ported adder as an example of a mixer element using collect pads. Needs more negotiation work.
Original commit message from CVS:
* gst/adder/Makefile.am:
* gst/adder/gstadder.c: (gst_adder_setcaps),
(gst_adder_class_init), (gst_adder_init),
(gst_adder_request_new_pad), (gst_adder_collected),
(gst_adder_change_state):
* gst/adder/gstadder.h:
Ported adder as an example of a mixer element using
collect pads. Needs more negotiation work.
2005-05-05 09:46:03 +00:00

93 lines
2.6 KiB
C

/* 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
extern GstElementDetails gst_adder_details;
#define GST_TYPE_ADDER \
(gst_adder_get_type())
#define GST_ADDER(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_ADDER,GstAdder))
#define GST_ADDER_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_ADDER,GstAdderClass))
#define GST_IS_ADDER(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_ADDER))
#define GST_IS_ADDER_CLASS(obj) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_ADDER))
typedef struct _GstAdder GstAdder;
typedef struct _GstAdderClass GstAdderClass;
typedef struct _GstAdderInputChannel GstAdderInputChannel;
typedef enum _GstAdderFormat GstAdderFormat;
enum _GstAdderFormat {
GST_ADDER_FORMAT_UNSET,
GST_ADDER_FORMAT_INT,
GST_ADDER_FORMAT_FLOAT
};
typedef void (*GstAdderFunction) (gpointer out, gpointer in, guint size);
struct _GstAdder {
GstElement element;
GstPad *srcpad;
GstCollectPads *collect;
gint numpads;
/* the next are valid for both int and float */
GstAdderFormat format;
guint rate;
guint channels;
guint width;
guint endianness;
/* the next are valid only for format == GST_ADDER_FORMAT_INT */
guint depth;
gboolean is_signed;
/* function to add samples */
GstAdderFunction func;
/* counters to keep track of timestamps */
gint64 timestamp;
gint64 offset;
};
struct _GstAdderClass {
GstElementClass parent_class;
};
GType gst_adder_get_type (void);
gboolean gst_adder_factory_init (GstElementFactory *factory);
G_END_DECLS
#endif /* __GST_ADDER_H__ */