mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-22 16:26:39 +00:00
123 lines
3.3 KiB
C
123 lines
3.3 KiB
C
/* GStreamer
|
|
*
|
|
* gstv4lsrc.h: BT8x8/V4L 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_V4LSRC_H__
|
|
#define __GST_V4LSRC_H__
|
|
|
|
#include <gstv4lelement.h>
|
|
|
|
G_BEGIN_DECLS
|
|
#define GST_TYPE_V4LSRC \
|
|
(gst_v4lsrc_get_type())
|
|
#define GST_V4LSRC(obj) \
|
|
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_V4LSRC,GstV4lSrc))
|
|
#define GST_V4LSRC_CLASS(klass) \
|
|
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_V4LSRC,GstV4lSrcClass))
|
|
#define GST_IS_V4LSRC(obj) \
|
|
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_V4LSRC))
|
|
#define GST_IS_V4LSRC_CLASS(obj) \
|
|
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_V4LSRC))
|
|
typedef struct _GstV4lSrc GstV4lSrc;
|
|
typedef struct _GstV4lSrcClass GstV4lSrcClass;
|
|
|
|
enum
|
|
{
|
|
QUEUE_STATE_ERROR = -1,
|
|
QUEUE_STATE_READY_FOR_QUEUE, /* the frame is ready to be queued for capture */
|
|
QUEUE_STATE_QUEUED, /* the frame is queued for capture */
|
|
QUEUE_STATE_SYNCED /* the frame is captured */
|
|
};
|
|
|
|
typedef enum
|
|
{
|
|
GST_V4LSRC_SYNC_MODE_CLOCK,
|
|
GST_V4LSRC_SYNC_MODE_PRIVATE_CLOCK,
|
|
GST_V4LSRC_SYNC_MODE_FIXED_FPS,
|
|
GST_V4LSRC_SYNC_MODE_NONE,
|
|
} GstV4lSrcSyncMode;
|
|
|
|
struct _GstV4lSrc
|
|
{
|
|
GstV4lElement v4lelement;
|
|
|
|
/* pads */
|
|
GstPad *srcpad;
|
|
|
|
/* capture/buffer info */
|
|
struct video_mmap mmap;
|
|
struct video_mbuf mbuf;
|
|
guint buffer_size;
|
|
GstClockTime timestamp_sync;
|
|
|
|
/* 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 sync_frame, queue_frame;
|
|
gboolean is_capturing;
|
|
GstClockTimeDiff latency_offset;
|
|
|
|
/* True if we want to stop */
|
|
gboolean quit;
|
|
|
|
/* A/V sync... frame counter and internal cache */
|
|
gulong handled;
|
|
gint last_frame;
|
|
gint need_writes;
|
|
gboolean need_discont;
|
|
GstClockTime last_discont; /* gst_element_get_time () of last discont send */
|
|
|
|
/* 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;
|
|
|
|
/* list of supported colourspaces (as integers) */
|
|
GList *colourspaces;
|
|
|
|
/* how are we going to timestamp buffers? */
|
|
GstV4lSrcSyncMode syncmode;
|
|
|
|
gboolean copy_mode;
|
|
gboolean autoprobe; /* probe on startup ? */
|
|
};
|
|
|
|
struct _GstV4lSrcClass
|
|
{
|
|
GstV4lElementClass parent_class;
|
|
|
|
void (*frame_capture) (GObject * object);
|
|
void (*frame_drop) (GObject * object);
|
|
void (*frame_insert) (GObject * object);
|
|
};
|
|
|
|
GType gst_v4lsrc_get_type (void);
|
|
|
|
|
|
G_END_DECLS
|
|
#endif /* __GST_V4LSRC_H__ */
|