/*

  * Copyright (c) 2001-2003 BERO <bero@geocities.co.jp>
  * Copyright (c) 2011 Oskar Arvidsson

  *

  * 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_RND_AVG_H
 #define AVCODEC_RND_AVG_H
 

 #include <stddef.h>

 #include <stdint.h>
 

 #define CALL_2X_PIXELS(a, b, n)\
 static void a(uint8_t *block, const uint8_t *pixels, ptrdiff_t line_size, int h){\
     b(block  , pixels  , line_size, h);\
     b(block+n, pixels+n, line_size, 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 */