0,0 → 1,91 |
/* |
* 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_cropTbl + 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]; |
} |
} |
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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); |
} |
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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 */ |
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#endif /* AVCODEC_MOTIONPIXELS_TABLEGEN_H */ |