1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
|
/* GStreamer video sink base class
* Copyright (C) <2003> Julien Moutte <julien@moutte.net>
* Copyright (C) <2009> Tim-Philipp Müller <tim centricular 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., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
/* FIXME 0.11: turn this into a proper base class */
#ifndef __GST_VIDEO_SINK_H__
#define __GST_VIDEO_SINK_H__
#include <gst/gst.h>
#include <gst/base/gstbasesink.h>
#include <gst/video/video-prelude.h>
#include <gst/video/video-info.h>
G_BEGIN_DECLS
#define GST_TYPE_VIDEO_SINK (gst_video_sink_get_type())
#define GST_VIDEO_SINK(obj) \
(G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_VIDEO_SINK, GstVideoSink))
#define GST_VIDEO_SINK_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_VIDEO_SINK, GstVideoSinkClass))
#define GST_IS_VIDEO_SINK(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_VIDEO_SINK))
#define GST_IS_VIDEO_SINK_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_VIDEO_SINK))
#define GST_VIDEO_SINK_GET_CLASS(klass) \
(G_TYPE_INSTANCE_GET_CLASS ((klass), GST_TYPE_VIDEO_SINK, GstVideoSinkClass))
/**
* GST_VIDEO_SINK_CAST:
* @obj: a #GstVideoSink or derived object
*
* Cast @obj to a #GstVideoSink without runtime type check.
*/
#define GST_VIDEO_SINK_CAST(obj) ((GstVideoSink *) (obj))
/**
* GST_VIDEO_SINK_PAD:
* @obj: a #GstVideoSink
*
* Get the sink #GstPad of @obj.
*/
#define GST_VIDEO_SINK_PAD(obj) GST_BASE_SINK_PAD(obj)
#define GST_VIDEO_SINK_WIDTH(obj) (GST_VIDEO_SINK_CAST (obj)->width)
#define GST_VIDEO_SINK_HEIGHT(obj) (GST_VIDEO_SINK_CAST (obj)->height)
typedef struct _GstVideoSink GstVideoSink;
typedef struct _GstVideoSinkClass GstVideoSinkClass;
typedef struct _GstVideoRectangle GstVideoRectangle;
typedef struct _GstVideoSinkPrivate GstVideoSinkPrivate;
/**
* GstVideoRectangle:
* @x: X coordinate of rectangle's top-left point
* @y: Y coordinate of rectangle's top-left point
* @w: width of the rectangle
* @h: height of the rectangle
*
* Helper structure representing a rectangular area.
*/
struct _GstVideoRectangle {
gint x;
gint y;
gint w;
gint h;
};
/**
* GstVideoSink:
* @height: video height (derived class needs to set this)
* @width: video width (derived class needs to set this)
*
* The video sink instance structure. Derived video sinks should set the
* @height and @width members.
*/
struct _GstVideoSink {
GstBaseSink element; /* FIXME 0.11: this should not be called 'element' */
/*< public >*/
gint width, height;
/*< private >*/
GstVideoSinkPrivate *priv;
gpointer _gst_reserved[GST_PADDING];
};
/**
* GstVideoSinkClass:
* @parent_class: the parent class structure
* @show_frame: render a video frame. Maps to #GstBaseSinkClass.render() and
* #GstBaseSinkClass.preroll() vfuncs. Rendering during preroll will be
* suppressed if the #GstVideoSink:show-preroll-frame property is set to
* %FALSE.
*
* The video sink class structure. Derived classes should override the
* @show_frame virtual function.
*/
struct _GstVideoSinkClass {
GstBaseSinkClass parent_class;
GstFlowReturn (*show_frame) (GstVideoSink *video_sink, GstBuffer *buf);
/**
* GstVideoSinkClass::set_info:
* @caps: A #GstCaps.
* @info: A #GstVideoInfo corresponding to @caps.
*
* Notifies the subclass of changed #GstVideoInfo.
*
* Since: 1.20
*/
gboolean (*set_info) (GstVideoSink *video_sink, GstCaps *caps, const GstVideoInfo *info);
/*< private >*/
gpointer _gst_reserved[GST_PADDING-1];
};
GST_VIDEO_API
GType gst_video_sink_get_type (void);
GST_VIDEO_DEPRECATED_FOR(gst_video_center_rect)
void gst_video_sink_center_rect (GstVideoRectangle src, GstVideoRectangle dst,
GstVideoRectangle *result, gboolean scaling);
GST_VIDEO_API
void gst_video_center_rect (const GstVideoRectangle * src,
const GstVideoRectangle * dst,
GstVideoRectangle * result,
gboolean scaling);
G_DEFINE_AUTOPTR_CLEANUP_FUNC(GstVideoSink, gst_object_unref)
G_END_DECLS
#endif /* __GST_VIDEO_SINK_H__ */
|
