FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavfilter/hermite.h
Date: 2024-07-24 19:24:46
Exec Total Coverage
Lines: 0 12 0.0%
Functions: 0 1 0.0%
Branches: 0 0 -%

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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_HERMITE_H
20 #define AVFILTER_HERMITE_H
21
22 static inline double hermite_interpolation(double x, double x0, double x1,
23 double p0, double p1,
24 double m0, double m1)
25 {
26 double width = x1 - x0;
27 double t = (x - x0) / width;
28 double t2, t3;
29 double ct0, ct1, ct2, ct3;
30
31 m0 *= width;
32 m1 *= width;
33
34 t2 = t*t;
35 t3 = t2*t;
36 ct0 = p0;
37 ct1 = m0;
38
39 ct2 = -3 * p0 - 2 * m0 + 3 * p1 - m1;
40 ct3 = 2 * p0 + m0 - 2 * p1 + m1;
41
42 return ct3 * t3 + ct2 * t2 + ct1 * t + ct0;
43 }
44
45 #endif /* AVFILTER_HERMITE_H */
46