reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame^] | 1 | /* libs/graphics/sgl/SkSpriteBlitter_ARGB32.cpp |
| 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 | #include "SkSpriteBlitter.h" |
| 19 | #include "SkTemplates.h" |
| 20 | #include "SkUtils.h" |
| 21 | #include "SkColorPriv.h" |
| 22 | |
| 23 | #define D32_S32A_Opaque_Pixel(dst, sc) \ |
| 24 | do { \ |
| 25 | if (sc) { \ |
| 26 | unsigned srcA = SkGetPackedA32(sc); \ |
| 27 | uint32_t result = sc; \ |
| 28 | if (srcA != 0xFF) { \ |
| 29 | result += SkAlphaMulQ(*dst, SkAlpha255To256(255 - srcA)); \ |
| 30 | } \ |
| 31 | *dst = result; \ |
| 32 | } \ |
| 33 | } while (0) |
| 34 | |
| 35 | #define SkSPRITE_CLASSNAME Sprite_D32_S32A_Opaque |
| 36 | #define SkSPRITE_ARGS |
| 37 | #define SkSPRITE_FIELDS |
| 38 | #define SkSPRITE_INIT |
| 39 | #define SkSPRITE_DST_TYPE uint32_t |
| 40 | #define SkSPRITE_SRC_TYPE uint32_t |
| 41 | #define SkSPRITE_DST_GETADDR getAddr32 |
| 42 | #define SkSPRITE_SRC_GETADDR getAddr32 |
| 43 | #define SkSPRITE_PREAMBLE(srcBM, x, y) |
| 44 | #define SkSPRITE_BLIT_PIXEL(dst, src) D32_S32A_Opaque_Pixel(dst, src) |
| 45 | #define SkSPRITE_NEXT_ROW |
| 46 | #define SkSPRITE_POSTAMBLE(srcBM) |
| 47 | #include "SkSpriteBlitterTemplate.h" |
| 48 | |
| 49 | /////////////////////////////////////////////////////////////////////////////// |
| 50 | |
| 51 | class Sprite_D32_S32_Opaque : public SkSpriteBlitter { |
| 52 | public: |
| 53 | Sprite_D32_S32_Opaque(const SkBitmap& source) : SkSpriteBlitter(source) {} |
| 54 | |
| 55 | virtual void blitRect(int x, int y, int width, int height) { |
| 56 | SkASSERT(width > 0 && height > 0); |
| 57 | SK_RESTRICT uint32_t* dst = fDevice->getAddr32(x, y); |
| 58 | const SK_RESTRICT uint32_t* src = fSource->getAddr32(x - fLeft, |
| 59 | y - fTop); |
| 60 | unsigned dstRB = fDevice->rowBytes(); |
| 61 | unsigned srcRB = fSource->rowBytes(); |
| 62 | size_t size = width * sizeof(uint32_t); |
| 63 | |
| 64 | do { |
| 65 | memcpy(dst, src, size); |
| 66 | dst = (SK_RESTRICT uint32_t*)((char*)dst + dstRB); |
| 67 | src = (const SK_RESTRICT uint32_t*)((const char*)src + srcRB); |
| 68 | } while (--height != 0); |
| 69 | } |
| 70 | }; |
| 71 | |
| 72 | /////////////////////////////////////////////////////////////////////////////// |
| 73 | |
| 74 | #include "SkColorFilter.h" |
| 75 | #include "SkXfermode.h" |
| 76 | |
| 77 | class Sprite_D32_XferFilter : public SkSpriteBlitter { |
| 78 | public: |
| 79 | Sprite_D32_XferFilter(const SkBitmap& source, const SkPaint& paint) |
| 80 | : SkSpriteBlitter(source) { |
| 81 | fColorFilter = paint.getColorFilter(); |
| 82 | fColorFilter->safeRef(); |
| 83 | |
| 84 | fXfermode = paint.getXfermode(); |
| 85 | fXfermode->safeRef(); |
| 86 | |
| 87 | fBufferSize = 0; |
| 88 | fBuffer = NULL; |
| 89 | } |
| 90 | |
| 91 | virtual ~Sprite_D32_XferFilter() { |
| 92 | delete[] fBuffer; |
| 93 | fXfermode->safeUnref(); |
| 94 | fColorFilter->safeUnref(); |
| 95 | } |
| 96 | |
| 97 | virtual void setup(const SkBitmap& device, int left, int top, |
| 98 | const SkPaint& paint) { |
| 99 | this->INHERITED::setup(device, left, top, paint); |
| 100 | |
| 101 | int width = device.width(); |
| 102 | if (width > fBufferSize) { |
| 103 | fBufferSize = width; |
| 104 | delete[] fBuffer; |
| 105 | fBuffer = new SkPMColor[width]; |
| 106 | } |
| 107 | } |
| 108 | |
| 109 | protected: |
| 110 | SkColorFilter* fColorFilter; |
| 111 | SkXfermode* fXfermode; |
| 112 | int fBufferSize; |
| 113 | SkPMColor* fBuffer; |
| 114 | |
| 115 | private: |
| 116 | typedef SkSpriteBlitter INHERITED; |
| 117 | }; |
| 118 | |
| 119 | /////////////////////////////////////////////////////////////////////////////// |
| 120 | |
| 121 | class Sprite_D32_S32A_XferFilter : public Sprite_D32_XferFilter { |
| 122 | public: |
| 123 | Sprite_D32_S32A_XferFilter(const SkBitmap& source, const SkPaint& paint) |
| 124 | : Sprite_D32_XferFilter(source, paint) {} |
| 125 | |
| 126 | virtual void blitRect(int x, int y, int width, int height) { |
| 127 | SkASSERT(width > 0 && height > 0); |
| 128 | SK_RESTRICT uint32_t* dst = fDevice->getAddr32(x, y); |
| 129 | const SK_RESTRICT uint32_t* src = fSource->getAddr32(x - fLeft, |
| 130 | y - fTop); |
| 131 | unsigned dstRB = fDevice->rowBytes(); |
| 132 | unsigned srcRB = fSource->rowBytes(); |
| 133 | SkColorFilter* colorFilter = fColorFilter; |
| 134 | SkXfermode* xfermode = fXfermode; |
| 135 | |
| 136 | do { |
| 137 | const SkPMColor* tmp = src; |
| 138 | |
| 139 | if (NULL != colorFilter) { |
| 140 | colorFilter->filterSpan(src, width, fBuffer); |
| 141 | tmp = fBuffer; |
| 142 | } |
| 143 | |
| 144 | if (NULL != xfermode) { |
| 145 | xfermode->xfer32(dst, tmp, width, NULL); |
| 146 | } else { |
| 147 | for (int i = 0; i < width; i++) { |
| 148 | dst[i] = SkPMSrcOver(tmp[i], dst[i]); |
| 149 | } |
| 150 | } |
| 151 | |
| 152 | dst = (SK_RESTRICT uint32_t*)((char*)dst + dstRB); |
| 153 | src = (const SK_RESTRICT uint32_t*)((const char*)src + srcRB); |
| 154 | } while (--height != 0); |
| 155 | } |
| 156 | |
| 157 | private: |
| 158 | typedef Sprite_D32_XferFilter INHERITED; |
| 159 | }; |
| 160 | |
| 161 | static void fillbuffer(SK_RESTRICT SkPMColor dst[], |
| 162 | const SK_RESTRICT SkPMColor16 src[], int count) { |
| 163 | SkASSERT(count > 0); |
| 164 | |
| 165 | do { |
| 166 | *dst++ = SkPixel4444ToPixel32(*src++); |
| 167 | } while (--count != 0); |
| 168 | } |
| 169 | |
| 170 | class Sprite_D32_S4444_XferFilter : public Sprite_D32_XferFilter { |
| 171 | public: |
| 172 | Sprite_D32_S4444_XferFilter(const SkBitmap& source, const SkPaint& paint) |
| 173 | : Sprite_D32_XferFilter(source, paint) {} |
| 174 | |
| 175 | virtual void blitRect(int x, int y, int width, int height) { |
| 176 | SkASSERT(width > 0 && height > 0); |
| 177 | SK_RESTRICT SkPMColor* dst = fDevice->getAddr32(x, y); |
| 178 | const SK_RESTRICT SkPMColor16* src = fSource->getAddr16(x - fLeft, |
| 179 | y - fTop); |
| 180 | unsigned dstRB = fDevice->rowBytes(); |
| 181 | unsigned srcRB = fSource->rowBytes(); |
| 182 | SK_RESTRICT SkPMColor* buffer = fBuffer; |
| 183 | SkColorFilter* colorFilter = fColorFilter; |
| 184 | SkXfermode* xfermode = fXfermode; |
| 185 | |
| 186 | do { |
| 187 | fillbuffer(buffer, src, width); |
| 188 | |
| 189 | if (NULL != colorFilter) { |
| 190 | colorFilter->filterSpan(buffer, width, buffer); |
| 191 | } |
| 192 | if (NULL != xfermode) { |
| 193 | xfermode->xfer32(dst, buffer, width, NULL); |
| 194 | } else { |
| 195 | for (int i = 0; i < width; i++) { |
| 196 | dst[i] = SkPMSrcOver(buffer[i], dst[i]); |
| 197 | } |
| 198 | } |
| 199 | |
| 200 | dst = (SK_RESTRICT SkPMColor*)((char*)dst + dstRB); |
| 201 | src = (const SK_RESTRICT SkPMColor16*)((const char*)src + srcRB); |
| 202 | } while (--height != 0); |
| 203 | } |
| 204 | |
| 205 | private: |
| 206 | typedef Sprite_D32_XferFilter INHERITED; |
| 207 | }; |
| 208 | |
| 209 | /////////////////////////////////////////////////////////////////////////////// |
| 210 | |
| 211 | static void src_row(SK_RESTRICT SkPMColor dst[], |
| 212 | const SK_RESTRICT SkPMColor16 src[], int count) { |
| 213 | do { |
| 214 | *dst = SkPixel4444ToPixel32(*src); |
| 215 | src += 1; |
| 216 | dst += 1; |
| 217 | } while (--count != 0); |
| 218 | } |
| 219 | |
| 220 | class Sprite_D32_S4444_Opaque : public SkSpriteBlitter { |
| 221 | public: |
| 222 | Sprite_D32_S4444_Opaque(const SkBitmap& source) : SkSpriteBlitter(source) {} |
| 223 | |
| 224 | virtual void blitRect(int x, int y, int width, int height) { |
| 225 | SkASSERT(width > 0 && height > 0); |
| 226 | SK_RESTRICT SkPMColor* dst = fDevice->getAddr32(x, y); |
| 227 | const SK_RESTRICT SkPMColor16* src = fSource->getAddr16(x - fLeft, |
| 228 | y - fTop); |
| 229 | unsigned dstRB = fDevice->rowBytes(); |
| 230 | unsigned srcRB = fSource->rowBytes(); |
| 231 | |
| 232 | do { |
| 233 | src_row(dst, src, width); |
| 234 | dst = (SK_RESTRICT SkPMColor*)((char*)dst + dstRB); |
| 235 | src = (const SK_RESTRICT SkPMColor16*)((const char*)src + srcRB); |
| 236 | } while (--height != 0); |
| 237 | } |
| 238 | }; |
| 239 | |
| 240 | static void srcover_row(SK_RESTRICT SkPMColor dst[], |
| 241 | const SK_RESTRICT SkPMColor16 src[], int count) { |
| 242 | do { |
| 243 | *dst = SkPMSrcOver(SkPixel4444ToPixel32(*src), *dst); |
| 244 | src += 1; |
| 245 | dst += 1; |
| 246 | } while (--count != 0); |
| 247 | } |
| 248 | |
| 249 | class Sprite_D32_S4444 : public SkSpriteBlitter { |
| 250 | public: |
| 251 | Sprite_D32_S4444(const SkBitmap& source) : SkSpriteBlitter(source) {} |
| 252 | |
| 253 | virtual void blitRect(int x, int y, int width, int height) { |
| 254 | SkASSERT(width > 0 && height > 0); |
| 255 | SK_RESTRICT SkPMColor* dst = fDevice->getAddr32(x, y); |
| 256 | const SK_RESTRICT SkPMColor16* src = fSource->getAddr16(x - fLeft, |
| 257 | y - fTop); |
| 258 | unsigned dstRB = fDevice->rowBytes(); |
| 259 | unsigned srcRB = fSource->rowBytes(); |
| 260 | |
| 261 | do { |
| 262 | srcover_row(dst, src, width); |
| 263 | dst = (SK_RESTRICT SkPMColor*)((char*)dst + dstRB); |
| 264 | src = (const SK_RESTRICT SkPMColor16*)((const char*)src + srcRB); |
| 265 | } while (--height != 0); |
| 266 | } |
| 267 | }; |
| 268 | |
| 269 | /////////////////////////////////////////////////////////////////////////////// |
| 270 | |
| 271 | #include "SkTemplatesPriv.h" |
| 272 | |
| 273 | SkSpriteBlitter* SkSpriteBlitter::ChooseD32(const SkBitmap& source, |
| 274 | const SkPaint& paint, |
| 275 | void* storage, size_t storageSize) { |
| 276 | if (paint.getMaskFilter() != NULL || paint.getAlpha() != 0xFF) { |
| 277 | return NULL; |
| 278 | } |
| 279 | |
| 280 | SkXfermode* xfermode = paint.getXfermode(); |
| 281 | SkColorFilter* filter = paint.getColorFilter(); |
| 282 | SkSpriteBlitter* blitter = NULL; |
| 283 | |
| 284 | switch (source.getConfig()) { |
| 285 | case SkBitmap::kARGB_4444_Config: |
| 286 | if (xfermode || filter) { |
| 287 | SK_PLACEMENT_NEW_ARGS(blitter, Sprite_D32_S4444_XferFilter, |
| 288 | storage, storageSize, (source, paint)); |
| 289 | } else if (source.isOpaque()) { |
| 290 | SK_PLACEMENT_NEW_ARGS(blitter, Sprite_D32_S4444_Opaque, |
| 291 | storage, storageSize, (source)); |
| 292 | } else { |
| 293 | SK_PLACEMENT_NEW_ARGS(blitter, Sprite_D32_S4444, |
| 294 | storage, storageSize, (source)); |
| 295 | } |
| 296 | break; |
| 297 | case SkBitmap::kARGB_8888_Config: |
| 298 | if (xfermode || filter) { |
| 299 | SK_PLACEMENT_NEW_ARGS(blitter, Sprite_D32_S32A_XferFilter, |
| 300 | storage, storageSize, (source, paint)); |
| 301 | } else if (source.isOpaque()) { |
| 302 | SK_PLACEMENT_NEW_ARGS(blitter, Sprite_D32_S32_Opaque, |
| 303 | storage, storageSize, (source)); |
| 304 | } else { |
| 305 | SK_PLACEMENT_NEW_ARGS(blitter, Sprite_D32_S32A_Opaque, |
| 306 | storage, storageSize, (source)); |
| 307 | } |
| 308 | break; |
| 309 | default: |
| 310 | break; |
| 311 | } |
| 312 | return blitter; |
| 313 | } |
| 314 | |