media/base/simd/convert_yuv_to_rgb_x86.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #if defined(_MSC_VER)
   6 #include <intrin.h>
   7 #else
   8 #include <mmintrin.h>
   9 #endif
  10
  11 #include "media/base/simd/convert_yuv_to_rgb.h"
  12 #include "media/base/yuv_convert.h"
  13
  14 namespace media {
  15
  16 void ConvertYUVAToARGB_MMX(const uint8* yplane,
  17                            const uint8* uplane,
  18                            const uint8* vplane,
  19                            const uint8* aplane,
  20                            uint8* rgbframe,
  21                            int width,
  22                            int height,
  23                            int ystride,
  24                            int uvstride,
  25                            int astride,
  26                            int rgbstride,
  27                            YUVType yuv_type) {
  28   unsigned int y_shift = GetVerticalShift(yuv_type);
  29   for (int y = 0; y < height; ++y) {
  30     uint8* rgb_row = rgbframe + y * rgbstride;
  31     const uint8* y_ptr = yplane + y * ystride;
  32     const uint8* u_ptr = uplane + (y >> y_shift) * uvstride;
  33     const uint8* v_ptr = vplane + (y >> y_shift) * uvstride;
  34     const uint8* a_ptr = aplane + y * astride;
  35
  36     ConvertYUVAToARGBRow_MMX(y_ptr,
  37                              u_ptr,
  38                              v_ptr,
  39                              a_ptr,
  40                              rgb_row,
  41                              width,
  42                              GetLookupTable(yuv_type));
  43   }
  44
  45   EmptyRegisterState();
  46 }
  47
  48 void ConvertYUVToRGB32_SSE(const uint8* yplane,
  49                            const uint8* uplane,
  50                            const uint8* vplane,
  51                            uint8* rgbframe,
  52                            int width,
  53                            int height,
  54                            int ystride,
  55                            int uvstride,
  56                            int rgbstride,
  57                            YUVType yuv_type) {
  58   unsigned int y_shift = GetVerticalShift(yuv_type);
  59   for (int y = 0; y < height; ++y) {
  60     uint8* rgb_row = rgbframe + y * rgbstride;
  61     const uint8* y_ptr = yplane + y * ystride;
  62     const uint8* u_ptr = uplane + (y >> y_shift) * uvstride;
  63     const uint8* v_ptr = vplane + (y >> y_shift) * uvstride;
  64
  65     ConvertYUVToRGB32Row_SSE(y_ptr,
  66                              u_ptr,
  67                              v_ptr,
  68                              rgb_row,
  69                              width,
  70                              GetLookupTable(yuv_type));
  71   }
  72
  73   EmptyRegisterState();
  74 }
  75
  76 }  // namespace media