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/* 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__ */
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