mirror of https://github.com/FFmpeg/FFmpeg.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
91 lines
2.7 KiB
91 lines
2.7 KiB
/* |
|
* Header file for hardcoded motionpixels 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> |
|
|
|
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 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 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 void motionpixels_tableinit(void) |
|
{ |
|
if (!mp_rgb_yuv_table[0].u) |
|
mp_build_rgb_yuv_table(mp_rgb_yuv_table); |
|
} |
|
#endif /* CONFIG_HARDCODED_TABLES */ |
|
|
|
#endif /* AVCODEC_MOTIONPIXELS_TABLEGEN_H */
|
|
|