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., 51 Franklin St, Fifth Floor,
17  * Boston, MA 02110-1301, USA.
18  */
19 
20 #ifndef __GST_VIDEO_FLIP_H__
21 #define __GST_VIDEO_FLIP_H__
22 
23 #include <gst/gst.h>
24 #include <gst/video/video.h>
25 #include <gst/video/gstvideofilter.h>
26 
27 G_BEGIN_DECLS
28 
29 /**
30  * GstVideoFlipMethod:
31  * @GST_VIDEO_FLIP_METHOD_IDENTITY: Identity (no rotation)
32  * @GST_VIDEO_FLIP_METHOD_90R: Rotate clockwise 90 degrees
33  * @GST_VIDEO_FLIP_METHOD_180: Rotate 180 degrees
34  * @GST_VIDEO_FLIP_METHOD_90L: Rotate counter-clockwise 90 degrees
35  * @GST_VIDEO_FLIP_METHOD_HORIZ: Flip horizontally
36  * @GST_VIDEO_FLIP_METHOD_VERT: Flip vertically
37  * @GST_VIDEO_FLIP_METHOD_TRANS: Flip across upper left/lower right diagonal
38  * @GST_VIDEO_FLIP_METHOD_OTHER: Flip across upper right/lower left diagonal
39  * @GST_VIDEO_FLIP_METHOD_AUTO: Select flip method based on image-orientation tag
40  *
41  * The different flip methods.
42  */
43 typedef enum {
44   GST_VIDEO_FLIP_METHOD_IDENTITY,
45   GST_VIDEO_FLIP_METHOD_90R,
46   GST_VIDEO_FLIP_METHOD_180,
47   GST_VIDEO_FLIP_METHOD_90L,
48   GST_VIDEO_FLIP_METHOD_HORIZ,
49   GST_VIDEO_FLIP_METHOD_VERT,
50   GST_VIDEO_FLIP_METHOD_TRANS,
51   GST_VIDEO_FLIP_METHOD_OTHER,
52   GST_VIDEO_FLIP_METHOD_AUTO
53 } GstVideoFlipMethod;
54 
55 #define GST_TYPE_VIDEO_FLIP \
56   (gst_video_flip_get_type())
57 #define GST_VIDEO_FLIP(obj) \
58   (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_VIDEO_FLIP,GstVideoFlip))
59 #define GST_VIDEO_FLIP_CLASS(klass) \
60   (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_VIDEO_FLIP,GstVideoFlipClass))
61 #define GST_IS_VIDEO_FLIP(obj) \
62   (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_VIDEO_FLIP))
63 #define GST_IS_VIDEO_FLIP_CLASS(klass) \
64   (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_VIDEO_FLIP))
65 
66 typedef struct _GstVideoFlip GstVideoFlip;
67 typedef struct _GstVideoFlipClass GstVideoFlipClass;
68 
69 /**
70  * GstVideoFlip:
71  *
72  * Opaque datastructure.
73  */
74 struct _GstVideoFlip {
75   GstVideoFilter videofilter;
76 
77   /* < private > */
78   GstVideoOrientationMethod method;
79   GstVideoOrientationMethod tag_method;
80   GstVideoOrientationMethod active_method;
81   void (*process) (GstVideoFlip *videoflip, GstVideoFrame *dest, const GstVideoFrame *src);
82 };
83 
84 struct _GstVideoFlipClass {
85   GstVideoFilterClass parent_class;
86 };
87 
88 GType gst_video_flip_get_type (void);
89 
90 G_END_DECLS
91 
92 #endif /* __GST_VIDEO_FLIP_H__ */
93