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
154
155
156
157
158
159
160
161
162
163
164
165
166
|
/*
* Copyright (c) 2019 Eugene Lyapustin
*
* This file is part of FFmpeg.
*
* FFmpeg 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.
*
* FFmpeg 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 FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVFILTER_V360_H
#define AVFILTER_V360_H
#include "avfilter.h"
enum StereoFormats {
STEREO_2D,
STEREO_SBS,
STEREO_TB,
NB_STEREO_FMTS,
};
enum Projections {
EQUIRECTANGULAR,
CUBEMAP_3_2,
CUBEMAP_6_1,
EQUIANGULAR,
FLAT,
DUAL_FISHEYE,
BARREL,
CUBEMAP_1_6,
STEREOGRAPHIC,
MERCATOR,
NB_PROJECTIONS,
};
enum InterpMethod {
NEAREST,
BILINEAR,
BICUBIC,
LANCZOS,
NB_INTERP_METHODS,
};
enum Faces {
TOP_LEFT,
TOP_MIDDLE,
TOP_RIGHT,
BOTTOM_LEFT,
BOTTOM_MIDDLE,
BOTTOM_RIGHT,
NB_FACES,
};
enum Direction {
RIGHT, ///< Axis +X
LEFT, ///< Axis -X
UP, ///< Axis +Y
DOWN, ///< Axis -Y
FRONT, ///< Axis -Z
BACK, ///< Axis +Z
NB_DIRECTIONS,
};
enum Rotation {
ROT_0,
ROT_90,
ROT_180,
ROT_270,
NB_ROTATIONS,
};
enum RotationOrder {
YAW,
PITCH,
ROLL,
NB_RORDERS,
};
typedef struct XYRemap {
uint16_t u[4][4];
uint16_t v[4][4];
float ker[4][4];
} XYRemap;
typedef struct V360Context {
const AVClass *class;
int in, out;
int interp;
int width, height;
char *in_forder;
char *out_forder;
char *in_frot;
char *out_frot;
char *rorder;
int in_cubemap_face_order[6];
int out_cubemap_direction_order[6];
int in_cubemap_face_rotation[6];
int out_cubemap_face_rotation[6];
int rotation_order[3];
int in_stereo, out_stereo;
float in_pad, out_pad;
float yaw, pitch, roll;
int ih_flip, iv_flip;
int h_flip, v_flip, d_flip;
int in_transpose, out_transpose;
float h_fov, v_fov, d_fov;
float flat_range[3];
float rot_mat[3][3];
float input_mirror_modifier[2];
float output_mirror_modifier[3];
int pr_width[4], pr_height[4];
int in_offset_w[4], in_offset_h[4];
int out_offset_w[4], out_offset_h[4];
int planewidth[4], planeheight[4];
int inplanewidth[4], inplaneheight[4];
int uv_linesize[4];
int nb_planes;
int nb_allocated;
int elements;
uint16_t *u[4], *v[4];
int16_t *ker[4];
unsigned map[4];
void (*in_transform)(const struct V360Context *s,
const float *vec, int width, int height,
uint16_t us[4][4], uint16_t vs[4][4], float *du, float *dv);
void (*out_transform)(const struct V360Context *s,
int i, int j, int width, int height,
float *vec);
void (*calculate_kernel)(float du, float dv, const XYRemap *rmap,
uint16_t *u, uint16_t *v, int16_t *ker);
int (*remap_slice)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs);
void (*remap_line)(uint8_t *dst, int width, const uint8_t *src, ptrdiff_t in_linesize,
const uint16_t *u, const uint16_t *v, const int16_t *ker);
} V360Context;
void ff_v360_init(V360Context *s, int depth);
void ff_v360_init_x86(V360Context *s, int depth);
#endif /* AVFILTER_V360_H */
|
