/* * 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 */