1 /* GStreamer

     2  *

     3  * gstv4lsrc.h: BT8x8/V4L video source element

     4  *

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

     6  *

     7  * This library is free software; you can redistribute it and/or

     8  * modify it under the terms of the GNU Library General Public

     9  * License as published by the Free Software Foundation; either

    10  * version 2 of the License, or (at your option) any later version.

    11  *

    12  * This library is distributed in the hope that it will be useful,

    13  * but WITHOUT ANY WARRANTY; without even the implied warranty of

    14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

    15  * Library General Public License for more details.

    16  *

    17  * You should have received a copy of the GNU Library General Public

    18  * License along with this library; if not, write to the

    19  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,

    20  * Boston, MA 02111-1307, USA.

    21  */

    22 

    23 #ifndef __GST_V4LSRC_H__

    24 #define __GST_V4LSRC_H__

    25 

    26 

    27 #include <gstv4lelement.h>

    28 

    29 

    30 G_BEGIN_DECLS

    31 

    32 

    33 #define GST_TYPE_V4LSRC \

    34   (gst_v4lsrc_get_type())

    35 #define GST_V4LSRC(obj) \

    36   (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_V4LSRC,GstV4lSrc))

    37 #define GST_V4LSRC_CLASS(klass) \

    38   (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_V4LSRC,GstV4lSrcClass))

    39 #define GST_IS_V4LSRC(obj) \

    40   (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_V4LSRC))

    41 #define GST_IS_V4LSRC_CLASS(klass) \

    42   (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_V4LSRC))

    43 

    44 

    45 typedef struct _GstV4lSrc GstV4lSrc;

    46 typedef struct _GstV4lSrcClass GstV4lSrcClass;

    47 

    48 

    49 enum

    50 {

    51   QUEUE_STATE_ERROR = -1,

    52   QUEUE_STATE_READY_FOR_QUEUE,  /* the frame is ready to be queued for capture */

    53   QUEUE_STATE_QUEUED,           /* the frame is queued for capture */

    54   QUEUE_STATE_SYNCED            /* the frame is captured */

    55 };

    56 

    57 

    58 struct _GstV4lSrc

    59 {

    60   GstV4lElement v4lelement;

    61 

    62   /* pads */

    63   GstPad *srcpad;

    64 

    65   /* capture/buffer info */

    66   struct video_mmap mmap;

    67   struct video_mbuf mbuf;

    68   guint buffer_size;

    69   GstClockTime timestamp_sync;

    70 

    71   /* num of queued frames and some GThread stuff

    72    * to wait if there's not enough */

    73   gint8 *frame_queue_state;

    74   GMutex *mutex_queue_state;

    75   GCond *cond_queue_state;

    76   gint num_queued;

    77   gint sync_frame, queue_frame;

    78   gboolean is_capturing;

    79   GstClockTimeDiff timestamp_offset;

    80 

    81   /* True if we want to stop */

    82   gboolean quit;

    83 

    84   gint offset;

    85 

    86   /* list of supported colorspaces (as integers) */

    87   GList *colorspaces;

    88 

    89   gboolean autoprobe;           /* probe features on startup ? */

    90   gboolean autoprobe_fps;       /* probe fps on startup ? */

    91   gboolean copy_mode;

    92 

    93   GValue *fps_list;             /* list of fps probed */

    94 };

    95 

    96 struct _GstV4lSrcClass

    97 {

    98   GstV4lElementClass parent_class;

    99 };

   100 

   101 

   102 GType gst_v4lsrc_get_type (void);

   103 

   104 

   105 G_END_DECLS

   106 

   107 

   108 #endif /* __GST_V4LSRC_H__ */