media/base/yuv_convert.h

   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 #ifndef MEDIA_BASE_YUV_CONVERT_H_
   6 #define MEDIA_BASE_YUV_CONVERT_H_
   7
   8 #include "base/basictypes.h"
   9 #include "media/base/media_export.h"
  10
  11 // Visual Studio 2010 does not support MMX intrinsics on x64.
  12 // Some win64 yuv_convert code paths use SSE+MMX yasm, so without rewriting
  13 // them, we use yasm EmptyRegisterState_MMX in place of _mm_empty() or
  14 // hide the versions implemented with heavy use of MMX intrinsics.
  15 // TODO(wolenetz): Use MMX intrinsics when compiling win64 with Visual
  16 // Studio 2012? http://crbug.com/173450
  17 #if defined(ARCH_CPU_X86_FAMILY) && \
  18     !(defined(ARCH_CPU_X86_64) && defined(COMPILER_MSVC))
  19 #define MEDIA_MMX_INTRINSICS_AVAILABLE
  20 #endif
  21
  22 namespace media {
  23
  24 // Type of YUV surface.
  25 // The value of these enums matter as they are used to shift vertical indices.
  26 enum YUVType {
  27   YV16 = 0,  // YV16 is half width and full height chroma channels.
  28   YV12 = 1,  // YV12 is half width and half height chroma channels.
  29 };
  30
  31 // Mirror means flip the image horizontally, as in looking in a mirror.
  32 // Rotate happens after mirroring.
  33 enum Rotate {
  34   ROTATE_0,           // Rotation off.
  35   ROTATE_90,          // Rotate clockwise.
  36   ROTATE_180,         // Rotate upside down.
  37   ROTATE_270,         // Rotate counter clockwise.
  38   MIRROR_ROTATE_0,    // Mirror horizontally.
  39   MIRROR_ROTATE_90,   // Mirror then Rotate clockwise.
  40   MIRROR_ROTATE_180,  // Mirror vertically.
  41   MIRROR_ROTATE_270,  // Transpose.
  42 };
  43
  44 // Filter affects how scaling looks.
  45 enum ScaleFilter {
  46   FILTER_NONE = 0,        // No filter (point sampled).
  47   FILTER_BILINEAR_H = 1,  // Bilinear horizontal filter.
  48   FILTER_BILINEAR_V = 2,  // Bilinear vertical filter.
  49   FILTER_BILINEAR = 3,    // Bilinear filter.
  50 };
  51
  52 MEDIA_EXPORT void InitializeCPUSpecificYUVConversions();
  53
  54 // Convert a frame of YUV to 32 bit ARGB.
  55 // Pass in YV16/YV12 depending on source format
  56 MEDIA_EXPORT void ConvertYUVToRGB32(const uint8* yplane,
  57                                     const uint8* uplane,
  58                                     const uint8* vplane,
  59                                     uint8* rgbframe,
  60                                     int width,
  61                                     int height,
  62                                     int ystride,
  63                                     int uvstride,
  64                                     int rgbstride,
  65                                     YUVType yuv_type);
  66
  67 // Convert a frame of YUVA to 32 bit ARGB.
  68 // Pass in YV12A
  69 MEDIA_EXPORT void ConvertYUVAToARGB(const uint8* yplane,
  70                                     const uint8* uplane,
  71                                     const uint8* vplane,
  72                                     const uint8* aplane,
  73                                     uint8* rgbframe,
  74                                     int width,
  75                                     int height,
  76                                     int ystride,
  77                                     int uvstride,
  78                                     int astride,
  79                                     int rgbstride,
  80                                     YUVType yuv_type);
  81
  82 // Scale a frame of YUV to 32 bit ARGB.
  83 // Supports rotation and mirroring.
  84 MEDIA_EXPORT void ScaleYUVToRGB32(const uint8* yplane,
  85                                   const uint8* uplane,
  86                                   const uint8* vplane,
  87                                   uint8* rgbframe,
  88                                   int source_width,
  89                                   int source_height,
  90                                   int width,
  91                                   int height,
  92                                   int ystride,
  93                                   int uvstride,
  94                                   int rgbstride,
  95                                   YUVType yuv_type,
  96                                   Rotate view_rotate,
  97                                   ScaleFilter filter);
  98
  99 // Biliner Scale a frame of YV12 to 32 bits ARGB on a specified rectangle.
 100 // |yplane|, etc and |rgbframe| should point to the top-left pixels of the
 101 // source and destination buffers.
 102 MEDIA_EXPORT void ScaleYUVToRGB32WithRect(const uint8* yplane,
 103                                           const uint8* uplane,
 104                                           const uint8* vplane,
 105                                           uint8* rgbframe,
 106                                           int source_width,
 107                                           int source_height,
 108                                           int dest_width,
 109                                           int dest_height,
 110                                           int dest_rect_left,
 111                                           int dest_rect_top,
 112                                           int dest_rect_right,
 113                                           int dest_rect_bottom,
 114                                           int ystride,
 115                                           int uvstride,
 116                                           int rgbstride);
 117
 118 MEDIA_EXPORT void ConvertRGB32ToYUV(const uint8* rgbframe,
 119                                     uint8* yplane,
 120                                     uint8* uplane,
 121                                     uint8* vplane,
 122                                     int width,
 123                                     int height,
 124                                     int rgbstride,
 125                                     int ystride,
 126                                     int uvstride);
 127
 128 MEDIA_EXPORT void ConvertRGB24ToYUV(const uint8* rgbframe,
 129                                     uint8* yplane,
 130                                     uint8* uplane,
 131                                     uint8* vplane,
 132                                     int width,
 133                                     int height,
 134                                     int rgbstride,
 135                                     int ystride,
 136                                     int uvstride);
 137
 138 MEDIA_EXPORT void ConvertYUY2ToYUV(const uint8* src,
 139                                    uint8* yplane,
 140                                    uint8* uplane,
 141                                    uint8* vplane,
 142                                    int width,
 143                                    int height);
 144
 145 MEDIA_EXPORT void ConvertNV21ToYUV(const uint8* src,
 146                                    uint8* yplane,
 147                                    uint8* uplane,
 148                                    uint8* vplane,
 149                                    int width,
 150                                    int height);
 151
 152 // Empty SIMD register state after calling optimized scaler functions.
 153 MEDIA_EXPORT void EmptyRegisterState();
 154
 155 }  // namespace media
 156
 157 #endif  // MEDIA_BASE_YUV_CONVERT_H_