mirror of
https://git.ffmpeg.org/ffmpeg.git
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202 lines
4.4 KiB
C
202 lines
4.4 KiB
C
/*
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* Copyright (c) 2019 Eugene Lyapustin
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef AVFILTER_V360_H
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#define AVFILTER_V360_H
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#include "avfilter.h"
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enum StereoFormats {
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STEREO_2D,
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STEREO_SBS,
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STEREO_TB,
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NB_STEREO_FMTS,
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};
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enum Projections {
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EQUIRECTANGULAR,
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CUBEMAP_3_2,
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CUBEMAP_6_1,
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EQUIANGULAR,
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FLAT,
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DUAL_FISHEYE,
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BARREL,
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CUBEMAP_1_6,
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STEREOGRAPHIC,
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MERCATOR,
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BALL,
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HAMMER,
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SINUSOIDAL,
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FISHEYE,
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PANNINI,
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CYLINDRICAL,
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PERSPECTIVE,
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TETRAHEDRON,
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BARREL_SPLIT,
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TSPYRAMID,
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HEQUIRECTANGULAR,
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EQUISOLID,
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ORTHOGRAPHIC,
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OCTAHEDRON,
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CYLINDRICALEA,
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NB_PROJECTIONS,
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};
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enum InterpMethod {
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NEAREST,
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BILINEAR,
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LAGRANGE9,
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BICUBIC,
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LANCZOS,
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SPLINE16,
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GAUSSIAN,
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MITCHELL,
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NB_INTERP_METHODS,
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};
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enum Faces {
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TOP_LEFT,
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TOP_MIDDLE,
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TOP_RIGHT,
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BOTTOM_LEFT,
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BOTTOM_MIDDLE,
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BOTTOM_RIGHT,
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NB_FACES,
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};
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enum Direction {
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RIGHT, ///< Axis +X
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LEFT, ///< Axis -X
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UP, ///< Axis +Y
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DOWN, ///< Axis -Y
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FRONT, ///< Axis -Z
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BACK, ///< Axis +Z
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NB_DIRECTIONS,
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};
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enum Rotation {
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ROT_0,
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ROT_90,
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ROT_180,
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ROT_270,
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NB_ROTATIONS,
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};
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enum RotationOrder {
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YAW,
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PITCH,
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ROLL,
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NB_RORDERS,
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};
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typedef struct XYRemap {
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int16_t u[4][4];
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int16_t v[4][4];
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float ker[4][4];
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} XYRemap;
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typedef struct SliceXYRemap {
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int16_t *u[2], *v[2];
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int16_t *ker[2];
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uint8_t *mask;
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} SliceXYRemap;
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typedef struct V360Context {
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const AVClass *class;
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int in, out;
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int interp;
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int alpha;
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int reset_rot;
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int width, height;
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char *in_forder;
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char *out_forder;
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char *in_frot;
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char *out_frot;
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char *rorder;
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int in_cubemap_face_order[6];
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int out_cubemap_direction_order[6];
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int in_cubemap_face_rotation[6];
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int out_cubemap_face_rotation[6];
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int rotation_order[3];
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int in_stereo, out_stereo;
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float in_pad, out_pad;
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int fin_pad, fout_pad;
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float yaw, pitch, roll;
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float h_offset, v_offset;
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int ih_flip, iv_flip;
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int h_flip, v_flip, d_flip;
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int in_transpose, out_transpose;
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float h_fov, v_fov, d_fov;
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float ih_fov, iv_fov, id_fov;
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float flat_range[2];
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float iflat_range[2];
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float rot_quaternion[2][4];
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float output_mirror_modifier[3];
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int in_width, in_height;
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int out_width, out_height;
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int pr_width[4], pr_height[4];
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int in_offset_w[4], in_offset_h[4];
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int out_offset_w[4], out_offset_h[4];
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int planewidth[4], planeheight[4];
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int inplanewidth[4], inplaneheight[4];
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int uv_linesize[4];
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int nb_planes;
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int nb_allocated;
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int elements;
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int mask_size;
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int max_value;
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int nb_threads;
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SliceXYRemap *slice_remap;
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unsigned map[4];
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int (*in_transform)(const struct V360Context *s,
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const float *vec, int width, int height,
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int16_t us[4][4], int16_t vs[4][4], float *du, float *dv);
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int (*out_transform)(const struct V360Context *s,
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int i, int j, int width, int height,
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float *vec);
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void (*calculate_kernel)(float du, float dv, const XYRemap *rmap,
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int16_t *u, int16_t *v, int16_t *ker);
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int (*remap_slice)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs);
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void (*remap_line)(uint8_t *dst, int width, const uint8_t *const src, ptrdiff_t in_linesize,
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const int16_t *const u, const int16_t *const v, const int16_t *const ker);
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} V360Context;
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void ff_v360_init(V360Context *s, int depth);
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void ff_v360_init_x86(V360Context *s, int depth);
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#endif /* AVFILTER_V360_H */
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