/* GStreamer

 *

 * gstv4lelement.h: base class for V4L elements

 *

 * Copyright (C) 2001-2002 Ronald Bultje <rbultje@ronald.bitfreak.net>

 *

 * 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_V4LELEMENT_H__

#define __GST_V4LELEMENT_H__

/* Because of some really cool feature in video4linux1, also known as

 * 'not including sys/types.h and sys/time.h', we had to include it

 * ourselves. In all their intelligence, these people decided to fix

 * this in the next version (video4linux2) in such a cool way that it

 * breaks all compilations of old stuff...

 * The real problem is actually that linux/time.h doesn't use proper

 * macro checks before defining types like struct timeval. The proper

 * fix here is to either fuck the kernel header (which is what we do

 * by defining _LINUX_TIME_H, an innocent little hack) or by fixing it

 * upstream, which I'll consider doing later on. If you get compiler

 * errors here, check your linux/time.h && sys/time.h header setup.

 */

#include <sys/types.h>

#define _LINUX_TIME_H

#include <linux/videodev.h>

#include <gst/gst.h>

#include <gst/base/gstpushsrc.h>

G_BEGIN_DECLS

#define GST_TYPE_V4LELEMENT \

  (gst_v4lelement_get_type())

#define GST_V4LELEMENT(obj) \

  (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_V4LELEMENT,GstV4lElement))

#define GST_V4LELEMENT_CLASS(klass) \

  (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_V4LELEMENT,GstV4lElementClass))

#define GST_IS_V4LELEMENT(obj) \

  (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_V4LELEMENT))

#define GST_IS_V4LELEMENT_CLASS(klass) \

  (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_V4LELEMENT))

#define GST_V4LELEMENT_GET_CLASS(klass) \

  (G_TYPE_INSTANCE_GET_CLASS ((klass), GST_TYPE_V4LELEMENT, GstV4lElementClass))

typedef struct _GstV4lElement GstV4lElement;

typedef struct _GstV4lElementClass GstV4lElementClass;

typedef struct _GstV4lXv GstV4lXv;

struct _GstV4lElement {

  GstPushSrc element;

  /* the video device */

  char *videodev;

  /* the video-device's file descriptor */

  gint video_fd;

  /* the video buffer (mmap()'ed) */

  guint8 *buffer;

  /* the video device's capabilities */

  struct video_capability vcap;

  /* the video device's window properties */

  struct video_window vwin;

  /* some more info about the current input's capabilities */

  struct video_channel vchan;

  /* lists... */

  GList *colors;

  GList *norms;

  GList *channels;

  /* X-overlay */

  GstV4lXv *xv;

  gulong xwindow_id;

};

struct _GstV4lElementClass {

  GstPushSrcClass parent_class;

  /* probed devices */

  GList *devices;

  /* actions */

  gboolean (*get_attribute)   (GstElement  *element,

                               const gchar *attr_name,

                               int         *value);

  gboolean (*set_attribute)   (GstElement  *element,

                               const gchar *attr_name,

                               const int    value);

};

GType gst_v4lelement_get_type(void);

G_END_DECLS

#endif /* __GST_V4LELEMENT_H__ */