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.
48 lines
1.4 KiB
48 lines
1.4 KiB
/* |
|
* This file is part of Libav. |
|
* |
|
* Libav 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. |
|
* |
|
* Libav 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 Libav; if not, write to the Free Software |
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
|
*/ |
|
|
|
#ifndef AVCODEC_RND_AVG_H |
|
#define AVCODEC_RND_AVG_H |
|
|
|
#include <stddef.h> |
|
#include <stdint.h> |
|
|
|
#define BYTE_VEC32(c) ((c) * 0x01010101UL) |
|
#define BYTE_VEC64(c) ((c) * 0x0001000100010001UL) |
|
|
|
static inline uint32_t rnd_avg32(uint32_t a, uint32_t b) |
|
{ |
|
return (a | b) - (((a ^ b) & ~BYTE_VEC32(0x01)) >> 1); |
|
} |
|
|
|
static inline uint32_t no_rnd_avg32(uint32_t a, uint32_t b) |
|
{ |
|
return (a & b) + (((a ^ b) & ~BYTE_VEC32(0x01)) >> 1); |
|
} |
|
|
|
static inline uint64_t rnd_avg64(uint64_t a, uint64_t b) |
|
{ |
|
return (a | b) - (((a ^ b) & ~BYTE_VEC64(0x01)) >> 1); |
|
} |
|
|
|
static inline uint64_t no_rnd_avg64(uint64_t a, uint64_t b) |
|
{ |
|
return (a & b) + (((a ^ b) & ~BYTE_VEC64(0x01)) >> 1); |
|
} |
|
|
|
#endif /* AVCODEC_RND_AVG_H */
|
|
|