mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-23 12:43:46 +02:00
7944b0ce94
They are unused and colorspace.h is not a installed header Found-by: Timo Rothenpieler <timo@rothenpieler.org> Reviewed-by: Clément Bœsch <u@pkh.me> Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
100 lines
3.1 KiB
C
100 lines
3.1 KiB
C
/*
|
|
* Colorspace conversion defines
|
|
* Copyright (c) 2001, 2002, 2003 Fabrice Bellard
|
|
*
|
|
* 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
|
|
*/
|
|
|
|
/**
|
|
* @file
|
|
* Various defines for YUV<->RGB conversion
|
|
*/
|
|
|
|
#ifndef AVUTIL_COLORSPACE_H
|
|
#define AVUTIL_COLORSPACE_H
|
|
|
|
#define SCALEBITS 10
|
|
#define ONE_HALF (1 << (SCALEBITS - 1))
|
|
#define FIX(x) ((int) ((x) * (1<<SCALEBITS) + 0.5))
|
|
|
|
#define YUV_TO_RGB1_CCIR(cb1, cr1)\
|
|
{\
|
|
cb = (cb1) - 128;\
|
|
cr = (cr1) - 128;\
|
|
r_add = FIX(1.40200*255.0/224.0) * cr + ONE_HALF;\
|
|
g_add = - FIX(0.34414*255.0/224.0) * cb - FIX(0.71414*255.0/224.0) * cr + \
|
|
ONE_HALF;\
|
|
b_add = FIX(1.77200*255.0/224.0) * cb + ONE_HALF;\
|
|
}
|
|
|
|
#define YUV_TO_RGB2_CCIR(r, g, b, y1)\
|
|
{\
|
|
y = ((y1) - 16) * FIX(255.0/219.0);\
|
|
r = cm[(y + r_add) >> SCALEBITS];\
|
|
g = cm[(y + g_add) >> SCALEBITS];\
|
|
b = cm[(y + b_add) >> SCALEBITS];\
|
|
}
|
|
|
|
#define YUV_TO_RGB1(cb1, cr1)\
|
|
{\
|
|
cb = (cb1) - 128;\
|
|
cr = (cr1) - 128;\
|
|
r_add = FIX(1.40200) * cr + ONE_HALF;\
|
|
g_add = - FIX(0.34414) * cb - FIX(0.71414) * cr + ONE_HALF;\
|
|
b_add = FIX(1.77200) * cb + ONE_HALF;\
|
|
}
|
|
|
|
#define YUV_TO_RGB2(r, g, b, y1)\
|
|
{\
|
|
y = (y1) << SCALEBITS;\
|
|
r = cm[(y + r_add) >> SCALEBITS];\
|
|
g = cm[(y + g_add) >> SCALEBITS];\
|
|
b = cm[(y + b_add) >> SCALEBITS];\
|
|
}
|
|
|
|
#define Y_CCIR_TO_JPEG(y)\
|
|
cm[((y) * FIX(255.0/219.0) + (ONE_HALF - 16 * FIX(255.0/219.0))) >> SCALEBITS]
|
|
|
|
#define Y_JPEG_TO_CCIR(y)\
|
|
(((y) * FIX(219.0/255.0) + (ONE_HALF + (16 << SCALEBITS))) >> SCALEBITS)
|
|
|
|
#define C_CCIR_TO_JPEG(y)\
|
|
cm[(((y) - 128) * FIX(127.0/112.0) + (ONE_HALF + (128 << SCALEBITS))) >> SCALEBITS]
|
|
|
|
/* NOTE: the clamp is really necessary! */
|
|
static inline int C_JPEG_TO_CCIR(int y) {
|
|
y = (((y - 128) * FIX(112.0/127.0) + (ONE_HALF + (128 << SCALEBITS))) >> SCALEBITS);
|
|
if (y < 16)
|
|
y = 16;
|
|
return y;
|
|
}
|
|
|
|
|
|
#define RGB_TO_Y_CCIR(r, g, b) \
|
|
((FIX(0.29900*219.0/255.0) * (r) + FIX(0.58700*219.0/255.0) * (g) + \
|
|
FIX(0.11400*219.0/255.0) * (b) + (ONE_HALF + (16 << SCALEBITS))) >> SCALEBITS)
|
|
|
|
#define RGB_TO_U_CCIR(r1, g1, b1, shift)\
|
|
(((- FIX(0.16874*224.0/255.0) * r1 - FIX(0.33126*224.0/255.0) * g1 + \
|
|
FIX(0.50000*224.0/255.0) * b1 + (ONE_HALF << shift) - 1) >> (SCALEBITS + shift)) + 128)
|
|
|
|
#define RGB_TO_V_CCIR(r1, g1, b1, shift)\
|
|
(((FIX(0.50000*224.0/255.0) * r1 - FIX(0.41869*224.0/255.0) * g1 - \
|
|
FIX(0.08131*224.0/255.0) * b1 + (ONE_HALF << shift) - 1) >> (SCALEBITS + shift)) + 128)
|
|
|
|
#endif /* AVUTIL_COLORSPACE_H */
|