aom_ports/msvc.h

   1 /*
   2  * Copyright (c) 2016, Alliance for Open Media. All rights reserved
   3  *
   4  * This source code is subject to the terms of the BSD 2 Clause License and
   5  * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
   6  * was not distributed with this source code in the LICENSE file, you can
   7  * obtain it at www.aomedia.org/license/software. If the Alliance for Open
   8  * Media Patent License 1.0 was not distributed with this source code in the
   9  * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
  10  */
  11
  12 #ifndef AOM_PORTS_MSVC_H_
  13 #define AOM_PORTS_MSVC_H_
  14 #ifdef _MSC_VER
  15
  16 #include "./aom_config.h"
  17
  18 #if _MSC_VER < 1900  // VS2015 provides snprintf
  19 #define snprintf _snprintf
  20 #endif  // _MSC_VER < 1900
  21
  22 #if _MSC_VER < 1800  // VS2013 provides round
  23 #include <math.h>
  24 static INLINE double round(double x) {
  25   if (x < 0)
  26     return ceil(x - 0.5);
  27   else
  28     return floor(x + 0.5);
  29 }
  30
  31 static INLINE float roundf(float x) {
  32   if (x < 0)
  33     return (float)ceil(x - 0.5f);
  34   else
  35     return (float)floor(x + 0.5f);
  36 }
  37
  38 static INLINE long lroundf(float x) {
  39   if (x < 0)
  40     return (long)(x - 0.5f);
  41   else
  42     return (long)(x + 0.5f);
  43 }
  44 #endif  // _MSC_VER < 1800
  45
  46 #if HAVE_AVX
  47 #include <immintrin.h>
  48 // Note:
  49 // _mm256_insert_epi16 intrinsics is available from vs2017.
  50 // We define this macro for vs2015 and earlier. The
  51 // intrinsics used here are in vs2015 document:
  52 // https://msdn.microsoft.com/en-us/library/hh977022.aspx
  53 // Input parameters:
  54 // a: __m256i,
  55 // d: int16_t,
  56 // indx: imm8 (0 - 15)
  57 #if _MSC_VER <= 1900
  58 #define _mm256_insert_epi16(a, d, indx)                                      \
  59   _mm256_insertf128_si256(                                                   \
  60       a,                                                                     \
  61       _mm_insert_epi16(_mm256_extractf128_si256(a, indx >> 3), d, indx % 8), \
  62       indx >> 3)
  63
  64 static INLINE int _mm256_extract_epi32(__m256i a, const int i) {
  65   return a.m256i_i32[i & 7];
  66 }
  67 static INLINE __m256i _mm256_insert_epi32(__m256i a, int b, const int i) {
  68   __m256i c = a;
  69   c.m256i_i32[i & 7] = b;
  70   return c;
  71 }
  72 #endif  // _MSC_VER <= 1900
  73 #endif  // HAVE_AVX
  74 #endif  // _MSC_VER
  75 #endif  // AOM_PORTS_MSVC_H_