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      1 /*
      2  * Copyright 2015 Google Inc.
      3  *
      4  * Use of this source code is governed by a BSD-style license that can be
      5  * found in the LICENSE file.
      6  */
      7 
      8 #ifndef SkOpts_DEFINED
      9 #define SkOpts_DEFINED
     10 
     11 #include "SkMatrix.h"
     12 #include "SkTextureCompressor.h"
     13 #include "SkTypes.h"
     14 #include "SkXfermode.h"
     15 
     16 struct ProcCoeff;
     17 
     18 namespace SkOpts {
     19     // Call to replace pointers to portable functions with pointers to CPU-specific functions.
     20     // Thread-safe and idempotent.
     21     // Called by SkGraphics::Init(), and automatically #if SK_ALLOW_STATIC_GLOBAL_INITIALIZERS.
     22     void Init();
     23 
     24     // Declare function pointers here...
     25 
     26     // May return nullptr if we haven't specialized the given Mode.
     27     extern SkXfermode* (*create_xfermode)(const ProcCoeff&, SkXfermode::Mode);
     28 
     29     typedef void (*BoxBlur)(const SkPMColor*, int, const SkIRect& srcBounds, SkPMColor*, int, int, int, int, int);
     30     extern BoxBlur box_blur_xx, box_blur_xy, box_blur_yx;
     31 
     32     typedef void (*Morph)(const SkPMColor*, SkPMColor*, int, int, int, int, int);
     33     extern Morph dilate_x, dilate_y, erode_x, erode_y;
     34 
     35     typedef bool (*TextureCompressor)(uint8_t* dst, const uint8_t* src,
     36                                       int width, int height, size_t rowBytes);
     37     extern TextureCompressor (*texture_compressor)(SkColorType, SkTextureCompressor::Format);
     38     extern bool (*fill_block_dimensions)(SkTextureCompressor::Format, int* x, int* y);
     39 
     40     extern void (*blit_mask_d32_a8)(SkPMColor*, size_t, const SkAlpha*, size_t, SkColor, int, int);
     41     extern void (*blit_row_color32)(SkPMColor*, const SkPMColor*, int, SkPMColor);
     42 
     43     // This function is an optimized version of SkColorCubeFilter::filterSpan
     44     extern void (*color_cube_filter_span)(const SkPMColor[],
     45                                           int,
     46                                           SkPMColor[],
     47                                           const int * [2],
     48                                           const SkScalar * [2],
     49                                           int,
     50                                           const SkColor*);
     51 
     52     extern SkMatrix::MapPtsProc matrix_translate, matrix_scale_translate, matrix_affine;
     53 
     54     // Swizzle input into some sort of 8888 pixel, {premul,unpremul} x {rgba,bgra}.
     55     typedef void (*Swizzle_8888)(uint32_t*, const void*, int);
     56     extern Swizzle_8888 RGBA_to_BGRA,          // i.e. just swap RB
     57                         RGBA_to_rgbA,          // i.e. just premultiply
     58                         RGBA_to_bgrA,          // i.e. swap RB and premultiply
     59                         RGB_to_RGB1,           // i.e. insert an opaque alpha
     60                         RGB_to_BGR1,           // i.e. swap RB and insert an opaque alpha
     61                         gray_to_RGB1,          // i.e. expand to color channels + an opaque alpha
     62                         grayA_to_RGBA,         // i.e. expand to color channels
     63                         grayA_to_rgbA,         // i.e. expand to color channels and premultiply
     64                         inverted_CMYK_to_RGB1, // i.e. convert color space
     65                         inverted_CMYK_to_BGR1; // i.e. convert color space
     66 
     67     extern void (*half_to_float)(float[], const uint16_t[], int);
     68     extern void (*float_to_half)(uint16_t[], const float[], int);
     69 }
     70 
     71 #endif//SkOpts_DEFINED
     72