gstreamer/sys/v4l2/gstv4l2src.h
Peter Seiderer f160625ea6 v4l2src: device sequence/offset correction in case of renegotiation
The v4l2 device restarts the sequence counter in case of streamoff/streamon,
the GST offset values are supposed to increment strictly monotonic, so
adjust the sequence counter/offset values in case of caps
renegotiation.

https://bugzilla.gnome.org/show_bug.cgi?id=745441
2015-04-02 17:40:20 -04:00

85 lines
2.1 KiB
C

/* GStreamer
*
* Copyright (C) 2001-2002 Ronald Bultje <rbultje@ronald.bitfreak.net>
* 2006 Edgard Lima <edgard.lima@indt.org.br>
*
* gstv4l2src.h: BT8x8/V4L2 source 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., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef __GST_V4L2SRC_H__
#define __GST_V4L2SRC_H__
#include <gstv4l2object.h>
#include <gstv4l2bufferpool.h>
GST_DEBUG_CATEGORY_EXTERN (v4l2src_debug);
G_BEGIN_DECLS
#define GST_TYPE_V4L2SRC \
(gst_v4l2src_get_type())
#define GST_V4L2SRC(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_V4L2SRC,GstV4l2Src))
#define GST_V4L2SRC_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_V4L2SRC,GstV4l2SrcClass))
#define GST_IS_V4L2SRC(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_V4L2SRC))
#define GST_IS_V4L2SRC_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_V4L2SRC))
typedef struct _GstV4l2Src GstV4l2Src;
typedef struct _GstV4l2SrcClass GstV4l2SrcClass;
/**
* GstV4l2Src:
*
* Opaque object.
*/
struct _GstV4l2Src
{
GstPushSrc pushsrc;
/*< private >*/
GstV4l2Object * v4l2object;
guint64 offset;
/* offset adjust after renegotiation */
guint64 renegotiation_adjust;
GstClockTime ctrl_time;
gboolean pending_set_fmt;
/* Timestamp sanity check */
GstClockTime last_timestamp;
gboolean has_bad_timestamp;
};
struct _GstV4l2SrcClass
{
GstPushSrcClass parent_class;
GList *v4l2_class_devices;
};
GType gst_v4l2src_get_type (void);
G_END_DECLS
#endif /* __GST_V4L2SRC_H__ */