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
|
/*
* Copyright (c) 2013 Vittorio Giovara <vittorio.giovara@gmail.com>
*
* This file is part of Libav.
*
* Libav is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* Libav 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <stdint.h>
#include "frame.h"
/**
* List of possible 3D Types
*/
enum AVStereo3DType {
/**
* Video is not stereoscopic (and metadata has to be there).
*/
AV_STEREO3D_2D,
/**
* Views are next to each other.
*
* LLLLRRRR
* LLLLRRRR
* LLLLRRRR
* ...
*/
AV_STEREO3D_SIDEBYSIDE,
/**
* Views are on top of each other.
*
* LLLLLLLL
* LLLLLLLL
* RRRRRRRR
* RRRRRRRR
*/
AV_STEREO3D_TOPBOTTOM,
/**
* Views are alternated temporally.
*
* frame0 frame1 frame2 ...
* LLLLLLLL RRRRRRRR LLLLLLLL
* LLLLLLLL RRRRRRRR LLLLLLLL
* LLLLLLLL RRRRRRRR LLLLLLLL
* ... ... ...
*/
AV_STEREO3D_FRAMESEQUENCE,
/**
* Views are packed in a checkerboard-like structure per pixel.
*
* LRLRLRLR
* RLRLRLRL
* LRLRLRLR
* ...
*/
AV_STEREO3D_CHECKERBOARD,
/**
* Views are next to each other, but when upscaling
* apply a checkerboard pattern.
*
* LLLLRRRR L L L L R R R R
* LLLLRRRR => L L L L R R R R
* LLLLRRRR L L L L R R R R
* LLLLRRRR L L L L R R R R
*/
AV_STEREO3D_SIDEBYSIDE_QUINCUNX,
/**
* Views are packed per line, as if interlaced.
*
* LLLLLLLL
* RRRRRRRR
* LLLLLLLL
* ...
*/
AV_STEREO3D_LINES,
/**
* Views are packed per column.
*
* LRLRLRLR
* LRLRLRLR
* LRLRLRLR
* ...
*/
AV_STEREO3D_COLUMNS,
};
/**
* Inverted views, Right/Bottom represents the left view.
*/
#define AV_STEREO3D_FLAG_INVERT (1 << 0)
/**
* Stereo 3D type: this structure describes how two videos are packed
* within a single video surface, with additional information as needed.
*
* @note The struct must be allocated with av_stereo3d_alloc() and
* its size is not a part of the public ABI.
*/
typedef struct AVStereo3D {
/**
* How views are packed within the video.
*/
enum AVStereo3DType type;
/**
* Additional information about the frame packing.
*/
int flags;
} AVStereo3D;
/**
* Allocate an AVStereo3D structure and set its fields to default values.
* The resulting struct can be freed using av_freep().
*
* @return An AVStereo3D filled with default values or NULL on failure.
*/
AVStereo3D *av_stereo3d_alloc(void);
/**
* Allocate a complete AVFrameSideData and add it to the frame.
*
* @param frame The frame which side data is added to.
*
* @return The AVStereo3D structure to be filled by caller.
*/
AVStereo3D *av_stereo3d_create_side_data(AVFrame *frame);
|
