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motionpixels_tablegen.h
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1 /*
2  * Header file for hardcoded motionpixels 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 static int mp_yuv_to_rgb(int y, int v, int u, int clip_rgb) {
35  int r, g, b;
36 
37  r = (1000 * y + 701 * v) / 1000;
38  g = (1000 * y - 357 * v - 172 * u) / 1000;
39  b = (1000 * y + 886 * u) / 1000;
40  if (clip_rgb)
41  return ((cm[r * 8] & 0xF8) << 7) | ((cm[g * 8] & 0xF8) << 2) | (cm[b * 8] >> 3);
42  if ((unsigned)r < 32 && (unsigned)g < 32 && (unsigned)b < 32)
43  return (r << 10) | (g << 5) | b;
44  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 
54 {
55  int i, j;
56 
57  for (i = 0; i < 31; ++i) {
58  for (j = 31; j > i; --j)
59  if (!(p[j].u | p[j].v | p[j].y))
60  p[j] = p[j - 1];
61  for (j = 0; j < 31 - i; ++j)
62  if (!(p[j].u | p[j].v | p[j].y))
63  p[j] = p[j + 1];
64  }
65 }
66 
68 {
69  int y, v, u, i;
70 
71  for (y = 0; y <= 31; ++y)
72  for (v = -31; v <= 31; ++v)
73  for (u = -31; u <= 31; ++u) {
74  i = mp_yuv_to_rgb(y, v, u, 0);
75  if (i < (1 << 15) && !(p[i].u | p[i].v | p[i].y)) {
76  p[i].y = y;
77  p[i].v = v;
78  p[i].u = u;
79  }
80  }
81  for (i = 0; i < 1024; ++i)
82  mp_set_zero_yuv(p + i * 32);
83 }
84 
86 {
87  if (!mp_rgb_yuv_table[0].u)
88  mp_build_rgb_yuv_table(mp_rgb_yuv_table);
89 }
90 #endif /* CONFIG_HARDCODED_TABLES */
91 
92 #endif /* AVCODEC_MOTIONPIXELS_TABLEGEN_H */
const char * g
Definition: vf_curves.c:108
const char * b
Definition: vf_curves.c:109
#define MAX_NEG_CROP
Definition: mathops.h:30
static av_cold void mp_set_zero_yuv(YuvPixel *p)
Macro definitions for various function/variable attributes.
uint8_t
#define av_cold
Definition: attributes.h:82
#define cm
Definition: dvbsubdec.c:36
const char * r
Definition: vf_curves.c:107
static int mp_yuv_to_rgb(int y, int v, int u, int clip_rgb)
static av_cold void motionpixels_tableinit(void)
#define u(width,...)
#define ff_crop_tab
static av_cold void mp_build_rgb_yuv_table(YuvPixel *p)
static YuvPixel mp_rgb_yuv_table[1<< 15]