LCOV - code coverage report
Current view: top level - libavcodec - rnd_avg.h (source / functions) Hit Total Coverage
Test: coverage.info Lines: 6 6 100.0 %
Date: 2017-12-16 01:21:47 Functions: 3 3 100.0 %

          Line data    Source code
       1             : /*
       2             :  * Copyright (c) 2001-2003 BERO <bero@geocities.co.jp>
       3             :  * Copyright (c) 2011 Oskar Arvidsson
       4             :  *
       5             :  * This file is part of FFmpeg.
       6             :  *
       7             :  * FFmpeg is free software; you can redistribute it and/or
       8             :  * modify it under the terms of the GNU Lesser General Public
       9             :  * License as published by the Free Software Foundation; either
      10             :  * version 2.1 of the License, or (at your option) any later version.
      11             :  *
      12             :  * FFmpeg is distributed in the hope that it will be useful,
      13             :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
      14             :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      15             :  * Lesser General Public License for more details.
      16             :  *
      17             :  * You should have received a copy of the GNU Lesser General Public
      18             :  * License along with FFmpeg; if not, write to the Free Software
      19             :  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
      20             :  */
      21             : 
      22             : #ifndef AVCODEC_RND_AVG_H
      23             : #define AVCODEC_RND_AVG_H
      24             : 
      25             : #include <stddef.h>
      26             : #include <stdint.h>
      27             : 
      28             : #define BYTE_VEC32(c) ((c) * 0x01010101UL)
      29             : #define BYTE_VEC64(c) ((c) * 0x0001000100010001UL)
      30             : 
      31  2032699914 : static inline uint32_t rnd_avg32(uint32_t a, uint32_t b)
      32             : {
      33  2032699914 :     return (a | b) - (((a ^ b) & ~BYTE_VEC32(0x01)) >> 1);
      34             : }
      35             : 
      36   142274340 : static inline uint32_t no_rnd_avg32(uint32_t a, uint32_t b)
      37             : {
      38   142274340 :     return (a & b) + (((a ^ b) & ~BYTE_VEC32(0x01)) >> 1);
      39             : }
      40             : 
      41    13749000 : static inline uint64_t rnd_avg64(uint64_t a, uint64_t b)
      42             : {
      43    13749000 :     return (a | b) - (((a ^ b) & ~BYTE_VEC64(0x01)) >> 1);
      44             : }
      45             : 
      46             : static inline uint64_t no_rnd_avg64(uint64_t a, uint64_t b)
      47             : {
      48             :     return (a & b) + (((a ^ b) & ~BYTE_VEC64(0x01)) >> 1);
      49             : }
      50             : 
      51             : #endif /* AVCODEC_RND_AVG_H */

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