reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame^] | 1 | /* libs/graphics/sgl/SkCoreBlitters.h |
| 2 | ** |
| 3 | ** Copyright 2006, The Android Open Source Project |
| 4 | ** |
| 5 | ** Licensed under the Apache License, Version 2.0 (the "License"); |
| 6 | ** you may not use this file except in compliance with the License. |
| 7 | ** You may obtain a copy of the License at |
| 8 | ** |
| 9 | ** http://www.apache.org/licenses/LICENSE-2.0 |
| 10 | ** |
| 11 | ** Unless required by applicable law or agreed to in writing, software |
| 12 | ** distributed under the License is distributed on an "AS IS" BASIS, |
| 13 | ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 14 | ** See the License for the specific language governing permissions and |
| 15 | ** limitations under the License. |
| 16 | */ |
| 17 | |
| 18 | #ifndef SkCoreBlitters_DEFINED |
| 19 | #define SkCoreBlitters_DEFINED |
| 20 | |
| 21 | #include "SkBlitter.h" |
| 22 | #include "SkBlitRow.h" |
| 23 | |
| 24 | class SkRasterBlitter : public SkBlitter { |
| 25 | public: |
| 26 | SkRasterBlitter(const SkBitmap& device) : fDevice(device) {} |
| 27 | |
| 28 | protected: |
| 29 | const SkBitmap& fDevice; |
| 30 | |
| 31 | private: |
| 32 | typedef SkBlitter INHERITED; |
| 33 | }; |
| 34 | |
| 35 | class SkShaderBlitter : public SkRasterBlitter { |
| 36 | public: |
| 37 | SkShaderBlitter(const SkBitmap& device, const SkPaint& paint); |
| 38 | virtual ~SkShaderBlitter(); |
| 39 | |
| 40 | protected: |
| 41 | SkShader* fShader; |
| 42 | |
| 43 | private: |
| 44 | // illegal |
| 45 | SkShaderBlitter& operator=(const SkShaderBlitter&); |
| 46 | |
| 47 | typedef SkRasterBlitter INHERITED; |
| 48 | }; |
| 49 | |
| 50 | /////////////////////////////////////////////////////////////////////////////// |
| 51 | |
| 52 | class SkA8_Blitter : public SkRasterBlitter { |
| 53 | public: |
| 54 | SkA8_Blitter(const SkBitmap& device, const SkPaint& paint); |
| 55 | virtual void blitH(int x, int y, int width); |
| 56 | virtual void blitAntiH(int x, int y, const SkAlpha antialias[], const int16_t runs[]); |
| 57 | virtual void blitV(int x, int y, int height, SkAlpha alpha); |
| 58 | virtual void blitRect(int x, int y, int width, int height); |
| 59 | virtual void blitMask(const SkMask&, const SkIRect&); |
| 60 | virtual const SkBitmap* justAnOpaqueColor(uint32_t*); |
| 61 | |
| 62 | private: |
| 63 | unsigned fSrcA; |
| 64 | |
| 65 | // illegal |
| 66 | SkA8_Blitter& operator=(const SkA8_Blitter&); |
| 67 | |
| 68 | typedef SkRasterBlitter INHERITED; |
| 69 | }; |
| 70 | |
| 71 | class SkA8_Shader_Blitter : public SkShaderBlitter { |
| 72 | public: |
| 73 | SkA8_Shader_Blitter(const SkBitmap& device, const SkPaint& paint); |
| 74 | virtual ~SkA8_Shader_Blitter(); |
| 75 | virtual void blitH(int x, int y, int width); |
| 76 | virtual void blitAntiH(int x, int y, const SkAlpha antialias[], const int16_t runs[]); |
| 77 | virtual void blitMask(const SkMask&, const SkIRect&); |
| 78 | |
| 79 | private: |
| 80 | SkXfermode* fXfermode; |
| 81 | SkPMColor* fBuffer; |
| 82 | uint8_t* fAAExpand; |
| 83 | |
| 84 | // illegal |
| 85 | SkA8_Shader_Blitter& operator=(const SkA8_Shader_Blitter&); |
| 86 | |
| 87 | typedef SkShaderBlitter INHERITED; |
| 88 | }; |
| 89 | |
| 90 | //////////////////////////////////////////////////////////////// |
| 91 | |
| 92 | class SkARGB32_Blitter : public SkRasterBlitter { |
| 93 | public: |
| 94 | SkARGB32_Blitter(const SkBitmap& device, const SkPaint& paint); |
| 95 | virtual void blitH(int x, int y, int width); |
| 96 | virtual void blitAntiH(int x, int y, const SkAlpha antialias[], const int16_t runs[]); |
| 97 | virtual void blitV(int x, int y, int height, SkAlpha alpha); |
| 98 | virtual void blitRect(int x, int y, int width, int height); |
| 99 | virtual void blitMask(const SkMask&, const SkIRect&); |
| 100 | virtual const SkBitmap* justAnOpaqueColor(uint32_t*); |
| 101 | |
| 102 | protected: |
| 103 | SkColor fPMColor; |
| 104 | |
| 105 | private: |
| 106 | unsigned fSrcA, fSrcR, fSrcG, fSrcB; |
| 107 | |
| 108 | // illegal |
| 109 | SkARGB32_Blitter& operator=(const SkARGB32_Blitter&); |
| 110 | |
| 111 | typedef SkRasterBlitter INHERITED; |
| 112 | }; |
| 113 | |
| 114 | class SkARGB32_Black_Blitter : public SkARGB32_Blitter { |
| 115 | public: |
| 116 | SkARGB32_Black_Blitter(const SkBitmap& device, const SkPaint& paint) |
| 117 | : SkARGB32_Blitter(device, paint) {} |
| 118 | virtual void blitMask(const SkMask&, const SkIRect&); |
| 119 | virtual void blitAntiH(int x, int y, const SkAlpha antialias[], const int16_t runs[]); |
| 120 | |
| 121 | private: |
| 122 | typedef SkARGB32_Blitter INHERITED; |
| 123 | }; |
| 124 | |
| 125 | class SkARGB32_Opaque_Blitter : public SkARGB32_Blitter { |
| 126 | public: |
| 127 | SkARGB32_Opaque_Blitter(const SkBitmap& device, const SkPaint& paint) |
| 128 | : SkARGB32_Blitter(device, paint) { SkASSERT(paint.getAlpha() == 0xFF); } |
| 129 | virtual void blitMask(const SkMask&, const SkIRect&); |
| 130 | |
| 131 | private: |
| 132 | typedef SkARGB32_Blitter INHERITED; |
| 133 | }; |
| 134 | |
| 135 | class SkARGB32_Shader_Blitter : public SkShaderBlitter { |
| 136 | public: |
| 137 | SkARGB32_Shader_Blitter(const SkBitmap& device, const SkPaint& paint); |
| 138 | virtual ~SkARGB32_Shader_Blitter(); |
| 139 | virtual void blitH(int x, int y, int width); |
| 140 | virtual void blitAntiH(int x, int y, const SkAlpha antialias[], const int16_t runs[]); |
| 141 | |
| 142 | private: |
| 143 | SkXfermode* fXfermode; |
| 144 | SkPMColor* fBuffer; |
| 145 | |
| 146 | // illegal |
| 147 | SkARGB32_Shader_Blitter& operator=(const SkARGB32_Shader_Blitter&); |
| 148 | |
| 149 | typedef SkShaderBlitter INHERITED; |
| 150 | }; |
| 151 | |
| 152 | //////////////////////////////////////////////////////////////// |
| 153 | |
| 154 | class SkRGB16_Blitter : public SkRasterBlitter { |
| 155 | public: |
| 156 | SkRGB16_Blitter(const SkBitmap& device, const SkPaint& paint); |
| 157 | virtual void blitH(int x, int y, int width); |
| 158 | virtual void blitAntiH(int x, int y, const SkAlpha antialias[], const int16_t runs[]); |
| 159 | virtual void blitV(int x, int y, int height, SkAlpha alpha); |
| 160 | virtual void blitRect(int x, int y, int width, int height); |
| 161 | virtual void blitMask(const SkMask&, const SkIRect&); |
| 162 | virtual const SkBitmap* justAnOpaqueColor(uint32_t*); |
| 163 | |
| 164 | private: |
| 165 | SkPMColor fSrcColor32; |
| 166 | unsigned fScale; |
| 167 | uint16_t fColor16; // already scaled by fScale |
| 168 | uint16_t fRawColor16; // unscaled |
| 169 | uint16_t fRawDither16; // unscaled |
| 170 | SkBool8 fDoDither; |
| 171 | |
| 172 | // illegal |
| 173 | SkRGB16_Blitter& operator=(const SkRGB16_Blitter&); |
| 174 | |
| 175 | typedef SkRasterBlitter INHERITED; |
| 176 | }; |
| 177 | |
| 178 | class SkRGB16_Black_Blitter : public SkRGB16_Blitter { |
| 179 | public: |
| 180 | SkRGB16_Black_Blitter(const SkBitmap& device, const SkPaint& paint); |
| 181 | |
| 182 | virtual void blitMask(const SkMask&, const SkIRect&); |
| 183 | virtual void blitAntiH(int x, int y, const SkAlpha antialias[], const int16_t runs[]); |
| 184 | |
| 185 | private: |
| 186 | typedef SkRGB16_Blitter INHERITED; |
| 187 | }; |
| 188 | |
| 189 | class SkRGB16_Shader_Blitter : public SkShaderBlitter { |
| 190 | public: |
| 191 | SkRGB16_Shader_Blitter(const SkBitmap& device, const SkPaint& paint); |
| 192 | virtual ~SkRGB16_Shader_Blitter(); |
| 193 | virtual void blitH(int x, int y, int width); |
| 194 | virtual void blitAntiH(int x, int y, const SkAlpha antialias[], const int16_t runs[]); |
| 195 | |
| 196 | protected: |
| 197 | SkPMColor* fBuffer; |
| 198 | SkBlitRow::Proc fOpaqueProc; |
| 199 | SkBlitRow::Proc fAlphaProc; |
| 200 | |
| 201 | private: |
| 202 | // illegal |
| 203 | SkRGB16_Shader_Blitter& operator=(const SkRGB16_Shader_Blitter&); |
| 204 | |
| 205 | typedef SkShaderBlitter INHERITED; |
| 206 | }; |
| 207 | |
| 208 | // used only if the shader can perform shadSpan16 |
| 209 | class SkRGB16_Shader16_Blitter : public SkRGB16_Shader_Blitter { |
| 210 | public: |
| 211 | SkRGB16_Shader16_Blitter(const SkBitmap& device, const SkPaint& paint); |
| 212 | virtual void blitH(int x, int y, int width); |
| 213 | virtual void blitAntiH(int x, int y, const SkAlpha antialias[], const int16_t runs[]); |
| 214 | |
| 215 | private: |
| 216 | typedef SkRGB16_Shader_Blitter INHERITED; |
| 217 | }; |
| 218 | |
| 219 | class SkRGB16_Shader_Xfermode_Blitter : public SkShaderBlitter { |
| 220 | public: |
| 221 | SkRGB16_Shader_Xfermode_Blitter(const SkBitmap& device, const SkPaint& paint); |
| 222 | virtual ~SkRGB16_Shader_Xfermode_Blitter(); |
| 223 | virtual void blitH(int x, int y, int width); |
| 224 | virtual void blitAntiH(int x, int y, const SkAlpha antialias[], const int16_t runs[]); |
| 225 | |
| 226 | private: |
| 227 | SkXfermode* fXfermode; |
| 228 | SkPMColor* fBuffer; |
| 229 | uint8_t* fAAExpand; |
| 230 | |
| 231 | // illegal |
| 232 | SkRGB16_Shader_Xfermode_Blitter& operator=(const SkRGB16_Shader_Xfermode_Blitter&); |
| 233 | |
| 234 | typedef SkShaderBlitter INHERITED; |
| 235 | }; |
| 236 | |
| 237 | ///////////////////////////////////////////////////////////////////////////// |
| 238 | |
| 239 | class SkA1_Blitter : public SkRasterBlitter { |
| 240 | public: |
| 241 | SkA1_Blitter(const SkBitmap& device, const SkPaint& paint); |
| 242 | virtual void blitH(int x, int y, int width); |
| 243 | |
| 244 | private: |
| 245 | uint8_t fSrcA; |
| 246 | |
| 247 | // illegal |
| 248 | SkA1_Blitter& operator=(const SkA1_Blitter&); |
| 249 | |
| 250 | typedef SkRasterBlitter INHERITED; |
| 251 | }; |
| 252 | |
| 253 | |
| 254 | extern SkBlitter* SkBlitter_ChooseD4444(const SkBitmap& device, |
| 255 | const SkPaint& paint, |
| 256 | void* storage, size_t storageSize); |
| 257 | |
| 258 | #endif |
| 259 | |