mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-23 12:43:46 +02:00
92 lines
2.7 KiB
C
92 lines
2.7 KiB
C
/*
|
|
* Header file for hardcoded motion pixels RGB to YUV table
|
|
*
|
|
* Copyright (c) 2009 Reimar Döffinger <Reimar.Doeffinger@gmx.de>
|
|
*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* FFmpeg is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#ifndef AVCODEC_MOTIONPIXELS_TABLEGEN_H
|
|
#define AVCODEC_MOTIONPIXELS_TABLEGEN_H
|
|
|
|
#include <stdint.h>
|
|
#include "libavutil/attributes.h"
|
|
|
|
typedef struct YuvPixel {
|
|
int8_t y, v, u;
|
|
} YuvPixel;
|
|
|
|
static int mp_yuv_to_rgb(int y, int v, int u, int clip_rgb) {
|
|
const uint8_t *cm = ff_crop_tab + MAX_NEG_CROP;
|
|
int r, g, b;
|
|
|
|
r = (1000 * y + 701 * v) / 1000;
|
|
g = (1000 * y - 357 * v - 172 * u) / 1000;
|
|
b = (1000 * y + 886 * u) / 1000;
|
|
if (clip_rgb)
|
|
return ((cm[r * 8] & 0xF8) << 7) | ((cm[g * 8] & 0xF8) << 2) | (cm[b * 8] >> 3);
|
|
if ((unsigned)r < 32 && (unsigned)g < 32 && (unsigned)b < 32)
|
|
return (r << 10) | (g << 5) | b;
|
|
return 1 << 15;
|
|
}
|
|
|
|
#if CONFIG_HARDCODED_TABLES
|
|
#define motionpixels_tableinit()
|
|
#include "libavcodec/motionpixels_tables.h"
|
|
#else
|
|
static YuvPixel mp_rgb_yuv_table[1 << 15];
|
|
|
|
static av_cold void mp_set_zero_yuv(YuvPixel *p)
|
|
{
|
|
int i, j;
|
|
|
|
for (i = 0; i < 31; ++i) {
|
|
for (j = 31; j > i; --j)
|
|
if (!(p[j].u | p[j].v | p[j].y))
|
|
p[j] = p[j - 1];
|
|
for (j = 0; j < 31 - i; ++j)
|
|
if (!(p[j].u | p[j].v | p[j].y))
|
|
p[j] = p[j + 1];
|
|
}
|
|
}
|
|
|
|
static av_cold void mp_build_rgb_yuv_table(YuvPixel *p)
|
|
{
|
|
int y, v, u, i;
|
|
|
|
for (y = 0; y <= 31; ++y)
|
|
for (v = -31; v <= 31; ++v)
|
|
for (u = -31; u <= 31; ++u) {
|
|
i = mp_yuv_to_rgb(y, v, u, 0);
|
|
if (i < (1 << 15) && !(p[i].u | p[i].v | p[i].y)) {
|
|
p[i].y = y;
|
|
p[i].v = v;
|
|
p[i].u = u;
|
|
}
|
|
}
|
|
for (i = 0; i < 1024; ++i)
|
|
mp_set_zero_yuv(p + i * 32);
|
|
}
|
|
|
|
static av_cold void motionpixels_tableinit(void)
|
|
{
|
|
mp_build_rgb_yuv_table(mp_rgb_yuv_table);
|
|
}
|
|
#endif /* CONFIG_HARDCODED_TABLES */
|
|
|
|
#endif /* AVCODEC_MOTIONPIXELS_TABLEGEN_H */
|