/* GStreamer

 *

 * gstv4lmjpegsrc.h: hardware MJPEG video source element

 *

 * 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_V4LMJPEGSRC_H__

#define __GST_V4LMJPEGSRC_H__

#include <gstv4lelement.h>

#include <sys/time.h>

#include <videodev_mjpeg.h>

G_BEGIN_DECLS

#define GST_TYPE_V4LMJPEGSRC \

  (gst_v4lmjpegsrc_get_type())

#define GST_V4LMJPEGSRC(obj) \

  (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_V4LMJPEGSRC,GstV4lMjpegSrc))

#define GST_V4LMJPEGSRC_CLASS(klass) \

  (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_V4LMJPEGSRC,GstV4lMjpegSrcClass))

#define GST_IS_V4LMJPEGSRC(obj) \

  (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_V4LMJPEGSRC))

#define GST_IS_V4LMJPEGSRC_CLASS(klass) \

  (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_V4LMJPEGSRC))

typedef struct _GstV4lMjpegSrc GstV4lMjpegSrc;

typedef struct _GstV4lMjpegSrcClass GstV4lMjpegSrcClass;

struct _GstV4lMjpegSrc {

  GstV4lElement v4lelement;

  /* pads */

  GstPad *srcpad;

  /* buffer/capture info */

  struct mjpeg_sync bsync;

  struct mjpeg_requestbuffers breq;

  /* num of queued frames and some GThread stuff

   * to wait if there's not enough */

  gint8 *frame_queue_state;

  GMutex *mutex_queue_state;

  GCond *cond_queue_state;

  gint num_queued;

  gint queue_frame;

  /* True if we want to stop */

  gboolean quit, is_capturing;

  /* A/V sync... frame counter and internal cache */

  gulong handled;

  gint last_frame;

  gint last_size;

  gint need_writes;

  gulong last_seq;

  /* clock */

  GstClock *clock;

  /* time to substract from clock time to get back to timestamp */

  GstClockTime substract_time;

  /* how often are we going to use each frame? */

  gint *use_num_times;

  /* how are we going to push buffers? */

  gboolean use_fixed_fps;

  /* end size */

  gint end_width, end_height;

  /* caching values */

#if 0

  gint x_offset;

  gint y_offset;

  gint frame_width;

  gint frame_height;

#endif

  gint quality;

  gint numbufs;

};

struct _GstV4lMjpegSrcClass {

  GstV4lElementClass parent_class;

  void (*frame_capture) (GObject *object);

  void (*frame_drop)    (GObject *object);

  void (*frame_insert)  (GObject *object);

  void (*frame_lost)    (GObject *object,

                         gint     num_lost);

};

GType gst_v4lmjpegsrc_get_type(void);

G_END_DECLS

#endif /* __GST_V4LMJPEGSRC_H__ */