1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/skia/trunk/src/core/SkCoreBlitters.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,184 @@
1.4 +/*
1.5 + * Copyright 2006 The Android Open Source Project
1.6 + *
1.7 + * Use of this source code is governed by a BSD-style license that can be
1.8 + * found in the LICENSE file.
1.9 + */
1.10 +
1.11 +#ifndef SkCoreBlitters_DEFINED
1.12 +#define SkCoreBlitters_DEFINED
1.13 +
1.14 +#include "SkBitmapProcShader.h"
1.15 +#include "SkBlitter.h"
1.16 +#include "SkBlitRow.h"
1.17 +#include "SkShader.h"
1.18 +#include "SkSmallAllocator.h"
1.19 +
1.20 +class SkRasterBlitter : public SkBlitter {
1.21 +public:
1.22 + SkRasterBlitter(const SkBitmap& device) : fDevice(device) {}
1.23 +
1.24 +protected:
1.25 + const SkBitmap& fDevice;
1.26 +
1.27 +private:
1.28 + typedef SkBlitter INHERITED;
1.29 +};
1.30 +
1.31 +class SkShaderBlitter : public SkRasterBlitter {
1.32 +public:
1.33 + SkShaderBlitter(const SkBitmap& device, const SkPaint& paint);
1.34 + virtual ~SkShaderBlitter();
1.35 +
1.36 +protected:
1.37 + uint32_t fShaderFlags;
1.38 + SkShader* fShader;
1.39 +
1.40 +private:
1.41 + // illegal
1.42 + SkShaderBlitter& operator=(const SkShaderBlitter&);
1.43 +
1.44 + typedef SkRasterBlitter INHERITED;
1.45 +};
1.46 +
1.47 +///////////////////////////////////////////////////////////////////////////////
1.48 +
1.49 +class SkA8_Coverage_Blitter : public SkRasterBlitter {
1.50 +public:
1.51 + SkA8_Coverage_Blitter(const SkBitmap& device, const SkPaint& paint);
1.52 + virtual void blitH(int x, int y, int width) SK_OVERRIDE;
1.53 + virtual void blitAntiH(int x, int y, const SkAlpha antialias[], const int16_t runs[]) SK_OVERRIDE;
1.54 + virtual void blitV(int x, int y, int height, SkAlpha alpha) SK_OVERRIDE;
1.55 + virtual void blitRect(int x, int y, int width, int height) SK_OVERRIDE;
1.56 + virtual void blitMask(const SkMask&, const SkIRect&) SK_OVERRIDE;
1.57 + virtual const SkBitmap* justAnOpaqueColor(uint32_t*) SK_OVERRIDE;
1.58 +};
1.59 +
1.60 +class SkA8_Blitter : public SkRasterBlitter {
1.61 +public:
1.62 + SkA8_Blitter(const SkBitmap& device, const SkPaint& paint);
1.63 + virtual void blitH(int x, int y, int width);
1.64 + virtual void blitAntiH(int x, int y, const SkAlpha antialias[], const int16_t runs[]);
1.65 + virtual void blitV(int x, int y, int height, SkAlpha alpha);
1.66 + virtual void blitRect(int x, int y, int width, int height);
1.67 + virtual void blitMask(const SkMask&, const SkIRect&);
1.68 + virtual const SkBitmap* justAnOpaqueColor(uint32_t*);
1.69 +
1.70 +private:
1.71 + unsigned fSrcA;
1.72 +
1.73 + // illegal
1.74 + SkA8_Blitter& operator=(const SkA8_Blitter&);
1.75 +
1.76 + typedef SkRasterBlitter INHERITED;
1.77 +};
1.78 +
1.79 +class SkA8_Shader_Blitter : public SkShaderBlitter {
1.80 +public:
1.81 + SkA8_Shader_Blitter(const SkBitmap& device, const SkPaint& paint);
1.82 + virtual ~SkA8_Shader_Blitter();
1.83 + virtual void blitH(int x, int y, int width);
1.84 + virtual void blitAntiH(int x, int y, const SkAlpha antialias[], const int16_t runs[]);
1.85 + virtual void blitMask(const SkMask&, const SkIRect&);
1.86 +
1.87 +private:
1.88 + SkXfermode* fXfermode;
1.89 + SkPMColor* fBuffer;
1.90 + uint8_t* fAAExpand;
1.91 +
1.92 + // illegal
1.93 + SkA8_Shader_Blitter& operator=(const SkA8_Shader_Blitter&);
1.94 +
1.95 + typedef SkShaderBlitter INHERITED;
1.96 +};
1.97 +
1.98 +////////////////////////////////////////////////////////////////
1.99 +
1.100 +class SkARGB32_Blitter : public SkRasterBlitter {
1.101 +public:
1.102 + SkARGB32_Blitter(const SkBitmap& device, const SkPaint& paint);
1.103 + virtual void blitH(int x, int y, int width);
1.104 + virtual void blitAntiH(int x, int y, const SkAlpha antialias[], const int16_t runs[]);
1.105 + virtual void blitV(int x, int y, int height, SkAlpha alpha);
1.106 + virtual void blitRect(int x, int y, int width, int height);
1.107 + virtual void blitMask(const SkMask&, const SkIRect&);
1.108 + virtual const SkBitmap* justAnOpaqueColor(uint32_t*);
1.109 +
1.110 +protected:
1.111 + SkColor fColor;
1.112 + SkPMColor fPMColor;
1.113 + SkBlitRow::ColorProc fColor32Proc;
1.114 + SkBlitRow::ColorRectProc fColorRect32Proc;
1.115 +
1.116 +private:
1.117 + unsigned fSrcA, fSrcR, fSrcG, fSrcB;
1.118 +
1.119 + // illegal
1.120 + SkARGB32_Blitter& operator=(const SkARGB32_Blitter&);
1.121 +
1.122 + typedef SkRasterBlitter INHERITED;
1.123 +};
1.124 +
1.125 +class SkARGB32_Opaque_Blitter : public SkARGB32_Blitter {
1.126 +public:
1.127 + SkARGB32_Opaque_Blitter(const SkBitmap& device, const SkPaint& paint)
1.128 + : INHERITED(device, paint) { SkASSERT(paint.getAlpha() == 0xFF); }
1.129 + virtual void blitMask(const SkMask&, const SkIRect&);
1.130 +
1.131 +private:
1.132 + typedef SkARGB32_Blitter INHERITED;
1.133 +};
1.134 +
1.135 +class SkARGB32_Black_Blitter : public SkARGB32_Opaque_Blitter {
1.136 +public:
1.137 + SkARGB32_Black_Blitter(const SkBitmap& device, const SkPaint& paint)
1.138 + : INHERITED(device, paint) {}
1.139 + virtual void blitAntiH(int x, int y, const SkAlpha antialias[], const int16_t runs[]);
1.140 +
1.141 +private:
1.142 + typedef SkARGB32_Opaque_Blitter INHERITED;
1.143 +};
1.144 +
1.145 +class SkARGB32_Shader_Blitter : public SkShaderBlitter {
1.146 +public:
1.147 + SkARGB32_Shader_Blitter(const SkBitmap& device, const SkPaint& paint);
1.148 + virtual ~SkARGB32_Shader_Blitter();
1.149 + virtual void blitH(int x, int y, int width) SK_OVERRIDE;
1.150 + virtual void blitV(int x, int y, int height, SkAlpha alpha) SK_OVERRIDE;
1.151 + virtual void blitRect(int x, int y, int width, int height) SK_OVERRIDE;
1.152 + virtual void blitAntiH(int x, int y, const SkAlpha[], const int16_t[]) SK_OVERRIDE;
1.153 + virtual void blitMask(const SkMask&, const SkIRect&) SK_OVERRIDE;
1.154 +
1.155 +private:
1.156 + SkXfermode* fXfermode;
1.157 + SkPMColor* fBuffer;
1.158 + SkBlitRow::Proc32 fProc32;
1.159 + SkBlitRow::Proc32 fProc32Blend;
1.160 + bool fShadeDirectlyIntoDevice;
1.161 + bool fConstInY;
1.162 +
1.163 + // illegal
1.164 + SkARGB32_Shader_Blitter& operator=(const SkARGB32_Shader_Blitter&);
1.165 +
1.166 + typedef SkShaderBlitter INHERITED;
1.167 +};
1.168 +
1.169 +///////////////////////////////////////////////////////////////////////////////
1.170 +
1.171 +/* These return the correct subclass of blitter for their device config.
1.172 +
1.173 + Currently, they make the following assumptions about the state of the
1.174 + paint:
1.175 +
1.176 + 1. If there is an xfermode, there will also be a shader
1.177 + 2. If there is a colorfilter, there will be a shader that itself handles
1.178 + calling the filter, so the blitter can always ignore the colorfilter obj
1.179 +
1.180 + These pre-conditions must be handled by the caller, in our case
1.181 + SkBlitter::Choose(...)
1.182 + */
1.183 +
1.184 +SkBlitter* SkBlitter_ChooseD565(const SkBitmap& device, const SkPaint& paint,
1.185 + SkTBlitterAllocator* allocator);
1.186 +
1.187 +#endif
