FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavcodec/motionpixels_tablegen.h
Date: 2021-09-24 20:55:06
Exec Total Coverage
Lines: 34 34 100.0%
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1 /*
2 * Header file for hardcoded motion pixels RGB to YUV table
3 *
4 * Copyright (c) 2009 Reimar Döffinger <Reimar.Doeffinger@gmx.de>
5 *
6 * This file is part of FFmpeg.
7 *
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
12 *
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
17 *
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 */
22
23 #ifndef AVCODEC_MOTIONPIXELS_TABLEGEN_H
24 #define AVCODEC_MOTIONPIXELS_TABLEGEN_H
25
26 #include <stdint.h>
27 #include "libavutil/attributes.h"
28
29 typedef struct YuvPixel {
30 int8_t y, v, u;
31 } YuvPixel;
32
33 5793151 static int mp_yuv_to_rgb(int y, int v, int u, int clip_rgb) {
34 5793151 const uint8_t *cm = ff_crop_tab + MAX_NEG_CROP;
35 int r, g, b;
36
37 5793151 r = (1000 * y + 701 * v) / 1000;
38 5793151 g = (1000 * y - 357 * v - 172 * u) / 1000;
39 5793151 b = (1000 * y + 886 * u) / 1000;
40
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5793151 if (clip_rgb)
41 5666143 return ((cm[r * 8] & 0xF8) << 7) | ((cm[g * 8] & 0xF8) << 2) | (cm[b * 8] >> 3);
42
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127008 if ((unsigned)r < 32 && (unsigned)g < 32 && (unsigned)b < 32)
43 33922 return (r << 10) | (g << 5) | b;
44 93086 return 1 << 15;
45 }
46
47 #if CONFIG_HARDCODED_TABLES
48 #define motionpixels_tableinit()
49 #include "libavcodec/motionpixels_tables.h"
50 #else
51 static YuvPixel mp_rgb_yuv_table[1 << 15];
52
53 1024 static av_cold void mp_set_zero_yuv(YuvPixel *p)
54 {
55 int i, j;
56
57
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32768 for (i = 0; i < 31; ++i) {
58
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59
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507904 if (!(p[j].u | p[j].v | p[j].y))
60 11975 p[j] = p[j - 1];
61
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507904 if (!(p[j].u | p[j].v | p[j].y))
63 6066 p[j] = p[j + 1];
64 }
65 1024 }
66
67 1 static av_cold void mp_build_rgb_yuv_table(YuvPixel *p)
68 {
69 int y, v, u, i;
70
71
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33 for (y = 0; y <= 31; ++y)
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2048 for (v = -31; v <= 31; ++v)
73
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129024 for (u = -31; u <= 31; ++u) {
74 127008 i = mp_yuv_to_rgb(y, v, u, 0);
75
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127008 if (i < (1 << 15) && !(p[i].u | p[i].v | p[i].y)) {
76 23226 p[i].y = y;
77 23226 p[i].v = v;
78 23226 p[i].u = u;
79 }
80 }
81
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1025 for (i = 0; i < 1024; ++i)
82 1024 mp_set_zero_yuv(p + i * 32);
83 1 }
84
85 1 static av_cold void motionpixels_tableinit(void)
86 {
87 1 mp_build_rgb_yuv_table(mp_rgb_yuv_table);
88 1 }
89 #endif /* CONFIG_HARDCODED_TABLES */
90
91 #endif /* AVCODEC_MOTIONPIXELS_TABLEGEN_H */
92