FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavfilter/preserve_color.h
Date: 2022-12-05 20:26:17
Exec Total Coverage
Lines: 0 36 0.0%
Functions: 0 3 0.0%
Branches: 0 43 0.0%

Line Branch Exec Source
1 /*
2 * This file is part of FFmpeg.
3 *
4 * FFmpeg is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
8 *
9 * FFmpeg is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
13 *
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with FFmpeg; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17 */
18
19 #ifndef AVFILTER_PRESERVE_COLOR_H
20 #define AVFILTER_PRESERVE_COLOR_H
21
22 #include <math.h>
23
24 #include "libavutil/macros.h"
25
26 enum {
27 P_NONE,
28 P_LUM,
29 P_MAX,
30 P_AVG,
31 P_SUM,
32 P_NRM,
33 P_PWR,
34 NB_PRESERVE
35 };
36
37 static inline float normalize(float r, float g, float b, float max)
38 {
39 r /= max;
40 g /= max;
41 b /= max;
42 return sqrtf(r * r + g * g + b * b);
43 }
44
45 static inline float power(float r, float g, float b, float max)
46 {
47 r /= max;
48 g /= max;
49 b /= max;
50 return cbrtf(r * r * r + g * g * g + b * b * b);
51 }
52
53 static inline void preserve_color(int preserve_color,
54 float ir, float ig, float ib,
55 float r, float g, float b,
56 float max,
57 float *icolor, float *ocolor)
58 {
59 switch (preserve_color) {
60 case P_LUM:
61 *icolor = FFMAX3(ir, ig, ib) + FFMIN3(ir, ig, ib);
62 *ocolor = FFMAX3( r, g, b) + FFMIN3( r, g, b);
63 break;
64 case P_MAX:
65 *icolor = FFMAX3(ir, ig, ib);
66 *ocolor = FFMAX3( r, g, b);
67 break;
68 case P_AVG:
69 *icolor = (ir + ig + ib + 1.f) / 3.f;
70 *ocolor = ( r + g + b + 1.f) / 3.f;
71 break;
72 case P_SUM:
73 *icolor = ir + ig + ib;
74 *ocolor = r + g + b;
75 break;
76 case P_NRM:
77 *icolor = normalize(ir, ig, ib, max);
78 *ocolor = normalize( r, g, b, max);
79 break;
80 case P_PWR:
81 *icolor = power(ir, ig, ib, max);
82 *ocolor = power( r, g, b, max);
83 break;
84 }
85 }
86
87 #endif /* AVFILTER_PRESERVE_COLOR_H */
88