1 /* GStreamer

     2  * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>

     3  *

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

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

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

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

     8  *

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

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

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

    12  * Library General Public License for more details.

    13  *

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

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

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

    17  * Boston, MA 02111-1307, USA.

    18  */

    19 

    20 #ifndef __GST_VIDEO_RATE_H__

    21 #define __GST_VIDEO_RATE_H__

    22 

    23 #include <gst/gst.h>

    24 

    25 G_BEGIN_DECLS

    26 

    27 #define GST_TYPE_VIDEO_RATE \

    28   (gst_video_rate_get_type())

    29 #define GST_VIDEO_RATE(obj) \

    30   (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_VIDEO_RATE,GstVideoRate))

    31 #define GST_VIDEO_RATE_CLASS(klass) \

    32   (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_VIDEO_RATE,GstVideoRateClass))

    33 #define GST_IS_VIDEO_RATE(obj) \

    34   (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_VIDEO_RATE))

    35 #define GST_IS_VIDEO_RATE_CLASS(klass) \

    36   (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_VIDEO_RATE))

    37 

    38 typedef struct _GstVideoRate GstVideoRate;

    39 typedef struct _GstVideoRateClass GstVideoRateClass;

    40 

    41 /**

    42  * GstVideoRate:

    43  *

    44  * Opaque data structure.

    45  */

    46 struct _GstVideoRate

    47 {

    48   GstElement element;

    49 

    50   GstPad *sinkpad, *srcpad;

    51 

    52   /* video state */

    53   gint from_rate_numerator, from_rate_denominator;

    54   gint to_rate_numerator, to_rate_denominator;

    55   guint64 next_ts;              /* Timestamp of next buffer to output */

    56   GstBuffer *prevbuf;

    57   guint64 prev_ts;              /* Previous buffer timestamp */

    58 

    59   /* segment handling */

    60   GstSegment segment;

    61 

    62   /* properties */

    63   guint64 in, out, dup, drop;

    64   gboolean silent;

    65   gdouble new_pref;

    66 };

    67 

    68 struct _GstVideoRateClass

    69 {

    70   GstElementClass parent_class;

    71 };

    72 

    73 G_END_DECLS

    74 

    75 #endif /* __GST_VIDEO_RATE_H__ */