gfx/ycbcr/yuv_convert.h

   1 // Copyright (c) 2010 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 "chromium_types.h"
   9 #include "gfxCore.h"
  10
  11 #ifdef HAVE_ARM_NEON
  12 #define HAVE_YCBCR_TO_RGB565 1
  13 #endif
  14
  15 namespace mozilla {
  16
  17 namespace gfx {
  18
  19 // Type of YUV surface.
  20 // The value of these enums matter as they are used to shift vertical indices.
  21 enum YUVType {
  22   YV12 = 0,           // YV12 is half width and half height chroma channels.
  23   YV16 = 1,           // YV16 is half width and full height chroma channels.
  24   YV24 = 2            // YV24 is full width and full height chroma channels.
  25 };
  26
  27 // Mirror means flip the image horizontally, as in looking in a mirror.
  28 // Rotate happens after mirroring.
  29 enum Rotate {
  30   ROTATE_0,           // Rotation off.
  31   ROTATE_90,          // Rotate clockwise.
  32   ROTATE_180,         // Rotate upside down.
  33   ROTATE_270,         // Rotate counter clockwise.
  34   MIRROR_ROTATE_0,    // Mirror horizontally.
  35   MIRROR_ROTATE_90,   // Mirror then Rotate clockwise.
  36   MIRROR_ROTATE_180,  // Mirror vertically.
  37   MIRROR_ROTATE_270   // Transpose.
  38 };
  39
  40 // Filter affects how scaling looks.
  41 enum ScaleFilter {
  42   FILTER_NONE = 0,        // No filter (point sampled).
  43   FILTER_BILINEAR_H = 1,  // Bilinear horizontal filter.
  44   FILTER_BILINEAR_V = 2,  // Bilinear vertical filter.
  45   FILTER_BILINEAR = 3     // Bilinear filter.
  46 };
  47
  48 // Convert a frame of YUV to 16 bit RGB565.
  49 // Pass in YV12 formats
  50 NS_GFX_(void) ConvertYCbCrToRGB565(const uint8* yplane,
  51                                   const uint8* uplane,
  52                                   const uint8* vplane,
  53                                   uint8* rgbframe,
  54                                   int pic_x,
  55                                   int pic_y,
  56                                   int pic_width,
  57                                   int pic_height,
  58                                   int ystride,
  59                                   int uvstride,
  60                                   int rgbstride,
  61                                   YUVType yuv_type);
  62
  63 // Convert a frame of YUV to 32 bit ARGB.
  64 // Pass in YV16/YV12 depending on source format
  65 NS_GFX_(void) ConvertYCbCrToRGB32(const uint8* yplane,
  66                                   const uint8* uplane,
  67                                   const uint8* vplane,
  68                                   uint8* rgbframe,
  69                                   int pic_x,
  70                                   int pic_y,
  71                                   int pic_width,
  72                                   int pic_height,
  73                                   int ystride,
  74                                   int uvstride,
  75                                   int rgbstride,
  76                                   YUVType yuv_type);
  77
  78 // Scale a frame of YUV to 32 bit ARGB.
  79 // Supports rotation and mirroring.
  80 NS_GFX_(void) ScaleYCbCrToRGB32(const uint8* yplane,
  81                                 const uint8* uplane,
  82                                 const uint8* vplane,
  83                                 uint8* rgbframe,
  84                                 int source_width,
  85                                 int source_height,
  86                                 int width,
  87                                 int height,
  88                                 int ystride,
  89                                 int uvstride,
  90                                 int rgbstride,
  91                                 YUVType yuv_type,
  92                                 Rotate view_rotate,
  93                                 ScaleFilter filter);
  94
  95 }  // namespace gfx
  96 }  // namespace mozilla
  97
  98 #endif  // MEDIA_BASE_YUV_CONVERT_H_