gst/effectv/gstrev.h

/* GStreamer
 * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
 *
 * EffecTV:
 * Copyright (C) 2001 FUKUCHI Kentarou
 *
 * EffecTV - Realtime Digital Video Effector
 * Copyright (C) 2001 FUKUCHI Kentarou
 *
 * revTV based on Rutt-Etra Video Synthesizer 1974?

 * (c)2002 Ed Tannenbaum
 *
 * This effect acts like a waveform monitor on each line.
 * It was originally done by deflecting the electron beam on a monitor using
 * additional electromagnets on the yoke of a b/w CRT. 
 * Here it is emulated digitally.

 * Experimaental tapes were made with this system by Bill and 
 * Louise Etra and Woody and Steina Vasulka

 * The line spacing can be controlled using the 1 and 2 Keys.
 * The gain is controlled using the 3 and 4 keys.
 * The update rate is controlled using the 0 and - keys.
 
 * EffecTV is free software. 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., 51 Franklin St, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 */

#ifndef __GST_REV_H__
#define __GST_REV_H__

#include <gst/gst.h>

#include <gst/video/video.h>
#include <gst/video/gstvideofilter.h>

G_BEGIN_DECLS

#define GST_TYPE_REVTV \
  (gst_revtv_get_type())
#define GST_REVTV(obj) \
  (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_REVTV,GstRevTV))
#define GST_REVTV_CLASS(klass) \
  (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_REVTV,GstRevTVClass))
#define GST_IS_REVTV(obj) \
  (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_REVTV))
#define GST_IS_REVTV_CLASS(klass) \
  (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_REVTV))

typedef struct _GstRevTV GstRevTV;
typedef struct _GstRevTVClass GstRevTVClass;

struct _GstRevTV
{
  GstVideoFilter videofilter;

  /* < private > */
  gint vgrabtime;
  gint vgrab;
  gint linespace;
  gint vscale;
};

struct _GstRevTVClass
{
  GstVideoFilterClass parent_class;
};

GType gst_revtv_get_type (void);

G_END_DECLS

#endif /* __GST_REV_H__ */