FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavutil/spherical.c
Date: 2024-02-16 17:37:06
Exec Total Coverage
Lines: 19 26 73.1%
Functions: 3 4 75.0%
Branches: 3 10 30.0%

Line Branch Exec Source
1 /*
2 * Copyright (c) 2016 Vittorio Giovara <vittorio.giovara@gmail.com>
3 *
4 * This file is part of FFmpeg.
5 *
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21 #include "avstring.h"
22 #include "macros.h"
23 #include "mem.h"
24 #include "spherical.h"
25
26 7 AVSphericalMapping *av_spherical_alloc(size_t *size)
27 {
28 7 AVSphericalMapping *spherical = av_mallocz(sizeof(AVSphericalMapping));
29
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7 if (!spherical)
30 return NULL;
31
32
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7 if (size)
33 7 *size = sizeof(*spherical);
34
35 7 return spherical;
36 }
37
38 15 void av_spherical_tile_bounds(const AVSphericalMapping *map,
39 size_t width, size_t height,
40 size_t *left, size_t *top,
41 size_t *right, size_t *bottom)
42 {
43 /* conversion from 0.32 coordinates to pixels */
44 15 uint64_t orig_width = (uint64_t) width * UINT32_MAX /
45 15 (UINT32_MAX - map->bound_right - map->bound_left);
46 15 uint64_t orig_height = (uint64_t) height * UINT32_MAX /
47 15 (UINT32_MAX - map->bound_bottom - map->bound_top);
48
49 /* add a (UINT32_MAX - 1) to round up integer division */
50 15 *left = (orig_width * map->bound_left + UINT32_MAX - 1) / UINT32_MAX;
51 15 *top = (orig_height * map->bound_top + UINT32_MAX - 1) / UINT32_MAX;
52 15 *right = orig_width - width - *left;
53 15 *bottom = orig_height - height - *top;
54 15 }
55
56 static const char *const spherical_projection_names[] = {
57 [AV_SPHERICAL_EQUIRECTANGULAR] = "equirectangular",
58 [AV_SPHERICAL_CUBEMAP] = "cubemap",
59 [AV_SPHERICAL_EQUIRECTANGULAR_TILE] = "tiled equirectangular",
60 };
61
62 15 const char *av_spherical_projection_name(enum AVSphericalProjection projection)
63 {
64
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15 if ((unsigned)projection >= FF_ARRAY_ELEMS(spherical_projection_names))
65 return "unknown";
66
67 15 return spherical_projection_names[projection];
68 }
69
70 int av_spherical_from_name(const char *name)
71 {
72 int i;
73
74 for (i = 0; i < FF_ARRAY_ELEMS(spherical_projection_names); i++) {
75 if (av_strstart(name, spherical_projection_names[i], NULL))
76 return i;
77 }
78
79 return -1;
80 }
81