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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