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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 "SkRasterPipeline.h"
     12 #include "SkTypes.h"
     13 #include "SkXfermodePriv.h"
     14 
     15 struct SkBitmapProcState;
     16 
     17 namespace SkOpts {
     18     // Call to replace pointers to portable functions with pointers to CPU-specific functions.
     19     // Thread-safe and idempotent.
     20     // Called by SkGraphics::Init().
     21     void Init();
     22 
     23     // Declare function pointers here...
     24 
     25     // May return nullptr if we haven't specialized the given Mode.
     26     extern SkXfermode* (*create_xfermode)(SkBlendMode);
     27 
     28     extern void (*blit_mask_d32_a8)(SkPMColor*, size_t, const SkAlpha*, size_t, SkColor, int, int);
     29     extern void (*blit_row_s32a_opaque)(SkPMColor*, const SkPMColor*, int, U8CPU);
     30 
     31     // Swizzle input into some sort of 8888 pixel, {premul,unpremul} x {rgba,bgra}.
     32     typedef void (*Swizzle_8888_u32)(uint32_t*, const uint32_t*, int);
     33     extern Swizzle_8888_u32 RGBA_to_BGRA,          // i.e. just swap RB
     34                             RGBA_to_rgbA,          // i.e. just premultiply
     35                             RGBA_to_bgrA,          // i.e. swap RB and premultiply
     36                             inverted_CMYK_to_RGB1, // i.e. convert color space
     37                             inverted_CMYK_to_BGR1; // i.e. convert color space
     38 
     39     typedef void (*Swizzle_8888_u8)(uint32_t*, const uint8_t*, int);
     40     extern Swizzle_8888_u8 RGB_to_RGB1,     // i.e. insert an opaque alpha
     41                            RGB_to_BGR1,     // i.e. swap RB and insert an opaque alpha
     42                            gray_to_RGB1,    // i.e. expand to color channels + an opaque alpha
     43                            grayA_to_RGBA,   // i.e. expand to color channels
     44                            grayA_to_rgbA;   // i.e. expand to color channels and premultiply
     45 
     46     extern void (*memset16)(uint16_t[], uint16_t, int);
     47     extern void SK_API (*memset32)(uint32_t[], uint32_t, int);
     48     extern void (*memset64)(uint64_t[], uint64_t, int);
     49 
     50     // The fastest high quality 32-bit hash we can provide on this platform.
     51     extern uint32_t (*hash_fn)(const void*, size_t, uint32_t seed);
     52     static inline uint32_t hash(const void* data, size_t bytes, uint32_t seed=0) {
     53         return hash_fn(data, bytes, seed);
     54     }
     55 
     56     // SkBitmapProcState optimized Shader, Sample, or Matrix procs.
     57     // This is the only one that can use anything past SSE2/NEON.
     58     extern void (*S32_alpha_D32_filter_DX)(const SkBitmapProcState&,
     59                                            const uint32_t* xy, int count, SkPMColor*);
     60 
     61 #define M(st) +1
     62     // We can't necessarily express the type of SkJumper stage functions here,
     63     // so we just use this void(*)(void) as a stand-in.
     64     using StageFn = void(*)(void);
     65     extern StageFn stages_highp[SK_RASTER_PIPELINE_STAGES(M)], just_return_highp;
     66     extern StageFn stages_lowp [SK_RASTER_PIPELINE_STAGES(M)], just_return_lowp;
     67 
     68     extern void (*start_pipeline_highp)(size_t,size_t,size_t,size_t, void**);
     69     extern void (*start_pipeline_lowp )(size_t,size_t,size_t,size_t, void**);
     70 #undef M
     71 }
     72 
     73 #endif//SkOpts_DEFINED
     74