The Tor Browser / file comparison
comparison: gfx/skia/trunk/include/core/SkBlitRow.h
gfx/skia/trunk/include/core/SkBlitRow.h
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
equal
deleted
inserted
replaced
| -1:000000000000 | 0:5faf43ce5a23 |
|---|---|
| 1 /* | |
| 2 * Copyright 2011 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 SkBlitRow_DEFINED | |
| 9 #define SkBlitRow_DEFINED | |
| 10 | |
| 11 #include "SkBitmap.h" | |
| 12 #include "SkColor.h" | |
| 13 | |
| 14 class SkBlitRow { | |
| 15 public: | |
| 16 enum Flags16 { | |
| 17 //! If set, the alpha parameter will be != 255 | |
| 18 kGlobalAlpha_Flag = 0x01, | |
| 19 //! If set, the src colors may have alpha != 255 | |
| 20 kSrcPixelAlpha_Flag = 0x02, | |
| 21 //! If set, the resulting 16bit colors should be dithered | |
| 22 kDither_Flag = 0x04 | |
| 23 }; | |
| 24 | |
| 25 /** Function pointer that reads a scanline of src SkPMColors, and writes | |
| 26 a corresponding scanline of 16bit colors (specific format based on the | |
| 27 config passed to the Factory. | |
| 28 | |
| 29 The x,y params are useful just for dithering | |
| 30 | |
| 31 @param alpha A global alpha to be applied to all of the src colors | |
| 32 @param x The x coordinate of the beginning of the scanline | |
| 33 @param y THe y coordinate of the scanline | |
| 34 */ | |
| 35 typedef void (*Proc)(uint16_t* dst, | |
| 36 const SkPMColor* src, | |
| 37 int count, U8CPU alpha, int x, int y); | |
| 38 | |
| 39 static Proc Factory(unsigned flags, SkBitmap::Config); | |
| 40 | |
| 41 ///////////// D32 version | |
| 42 | |
| 43 enum Flags32 { | |
| 44 kGlobalAlpha_Flag32 = 1 << 0, | |
| 45 kSrcPixelAlpha_Flag32 = 1 << 1 | |
| 46 }; | |
| 47 | |
| 48 /** Function pointer that blends 32bit colors onto a 32bit destination. | |
| 49 @param dst array of dst 32bit colors | |
| 50 @param src array of src 32bit colors (w/ or w/o alpha) | |
| 51 @param count number of colors to blend | |
| 52 @param alpha global alpha to be applied to all src colors | |
| 53 */ | |
| 54 typedef void (*Proc32)(uint32_t* dst, | |
| 55 const SkPMColor* src, | |
| 56 int count, U8CPU alpha); | |
| 57 | |
| 58 static Proc32 Factory32(unsigned flags32); | |
| 59 | |
| 60 /** Function pointer that blends a single color with a row of 32-bit colors | |
| 61 onto a 32-bit destination | |
| 62 */ | |
| 63 typedef void (*ColorProc)(SkPMColor* dst, const SkPMColor* src, int count, | |
| 64 SkPMColor color); | |
| 65 | |
| 66 /** Blend a single color onto a row of S32 pixels, writing the result | |
| 67 into a row of D32 pixels. src and dst may be the same memory, but | |
| 68 if they are not, they may not overlap. | |
| 69 */ | |
| 70 static void Color32(SkPMColor dst[], const SkPMColor src[], | |
| 71 int count, SkPMColor color); | |
| 72 | |
| 73 //! Public entry-point to return a blit function ptr | |
| 74 static ColorProc ColorProcFactory(); | |
| 75 | |
| 76 /** Function pointer that blends a single color onto a 32-bit rectangle. */ | |
| 77 typedef void (*ColorRectProc)(SkPMColor* dst, int width, int height, | |
| 78 size_t rowBytes, SkPMColor color); | |
| 79 | |
| 80 /** Blend a single color into a rectangle of D32 pixels. */ | |
| 81 static void ColorRect32(SkPMColor* dst, int width, int height, | |
| 82 size_t rowBytes, SkPMColor color); | |
| 83 | |
| 84 //! Public entry-point to return a blit function ptr | |
| 85 static ColorRectProc ColorRectProcFactory(); | |
| 86 | |
| 87 /** These static functions are called by the Factory and Factory32 | |
| 88 functions, and should return either NULL, or a | |
| 89 platform-specific function-ptr to be used in place of the | |
| 90 system default. | |
| 91 */ | |
| 92 | |
| 93 static Proc32 PlatformProcs32(unsigned flags); | |
| 94 static Proc PlatformProcs565(unsigned flags); | |
| 95 static ColorProc PlatformColorProc(); | |
| 96 | |
| 97 private: | |
| 98 enum { | |
| 99 kFlags16_Mask = 7, | |
| 100 kFlags32_Mask = 3 | |
| 101 }; | |
| 102 }; | |
| 103 | |
| 104 #endif |
