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/*
* 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,
BALL,
HAMMER,
SINUSOIDAL,
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;
int fin_pad, fout_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[2];
float rot_mat[3][3];
float input_mirror_modifier[2];
float output_mirror_modifier[3];
int in_width, in_height;
int out_width, out_height;
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[2], *v[2];
int16_t *ker[2];
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 */
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