2 * Copyright (c) 2020 - 2023 the ThorVG project. All rights reserved.
4 * Permission is hereby granted, free of charge, to any person obtaining a copy
5 * of this software and associated documentation files (the "Software"), to deal
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8 * copies of the Software, and to permit persons to whom the Software is
9 * furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice shall be included in all
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15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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23 #ifndef _TVG_SW_COMMON_H_
24 #define _TVG_SW_COMMON_H_
26 #include "tvgCommon.h"
27 #include "tvgRender.h"
31 static double timeStamp()
34 gettimeofday(&tv, NULL);
35 return (tv.tv_sec + tv.tv_usec / 1000000.0);
39 #define SW_CURVE_TYPE_POINT 0
40 #define SW_CURVE_TYPE_CUBIC 1
41 #define SW_ANGLE_PI (180L << 16)
42 #define SW_ANGLE_2PI (SW_ANGLE_PI << 1)
43 #define SW_ANGLE_PI2 (SW_ANGLE_PI >> 1)
44 #define SW_ANGLE_PI4 (SW_ANGLE_PI >> 2)
46 using SwCoord = signed long;
47 using SwFixed = signed long long;
53 SwPoint& operator+=(const SwPoint& rhs)
60 SwPoint operator+(const SwPoint& rhs) const
62 return {x + rhs.x, y + rhs.y};
65 SwPoint operator-(const SwPoint& rhs) const
67 return {x - rhs.x, y - rhs.y};
70 bool operator==(const SwPoint& rhs) const
72 return (x == rhs.x && y == rhs.y);
75 bool operator!=(const SwPoint& rhs) const
77 return (x != rhs.x || y != rhs.y);
82 if (x == 0 && y == 0) return true;
89 if (abs(x) < 2 && abs(y) < 2) return true;
102 SwPoint* pts; //the outline's points
103 uint32_t ptsCnt; //number of points in the glyph
104 uint32_t reservedPtsCnt;
105 uint32_t* cntrs; //the contour end points
106 uint16_t cntrsCnt; //number of contours in glyph
107 uint16_t reservedCntrsCnt;
108 uint8_t* types; //curve type
109 bool* closed; //opened or closed path?
133 min.x = min.y = max.x = max.y = 0;
146 float a11, a12, shiftX;
147 float a21, a22, shiftY;
163 struct SwStrokeBorder
169 int32_t start; //index of current sub-path start point
170 bool movable; //true: for ends of lineto borders
179 SwFixed subPathAngle;
180 SwPoint ptStartSubPath;
181 SwFixed subPathLineLength;
186 StrokeJoin joinSaved;
187 SwFill* fill = nullptr;
189 SwStrokeBorder borders[2];
195 bool handleWideStrokes;
212 SwOutline* outline = nullptr;
213 SwStroke* stroke = nullptr;
214 SwFill* fill = nullptr;
215 SwRleData* rle = nullptr;
216 SwRleData* strokeRle = nullptr;
217 SwBBox bbox; //Keep it boundary without stroke region. Using for optimal filling.
219 bool fastTrack = false; //Fast Track: axis-aligned rectangle without any clips?
224 SwOutline* outline = nullptr;
225 SwRleData* rle = nullptr;
226 uint32_t* data = nullptr;
227 uint32_t w, h, stride;
228 int32_t ox = 0; //offset x
229 int32_t oy = 0; //offset y
232 bool direct = false; //draw image directly (with offset)
233 bool scaled = false; //draw scaled image
238 uint32_t (*join)(uint8_t r, uint8_t g, uint8_t b, uint8_t a);
239 uint32_t (*lumaValue)(uint32_t c);
244 struct SwSurface : Surface
246 SwBlender blender; //mandatory
247 SwCompositor* compositor = nullptr; //compositor (optional)
250 struct SwCompositor : Compositor
252 SwSurface* recoverSfc; //Recover surface when composition is started
253 SwCompositor* recoverCmp; //Recover compositor when composition is done
262 SwOutline* strokeOutline;
266 static inline SwCoord TO_SWCOORD(float val)
268 return SwCoord(val * 64.0f);
271 static inline uint32_t ALPHA_BLEND(uint32_t c, uint32_t a)
273 return (((((c >> 8) & 0x00ff00ff) * a + 0x00ff00ff) & 0xff00ff00) +
274 ((((c & 0x00ff00ff) * a + 0x00ff00ff) >> 8) & 0x00ff00ff));
277 static inline uint32_t INTERPOLATE(uint32_t a, uint32_t c0, uint32_t c1)
279 return (((((((c0 >> 8) & 0xff00ff) - ((c1 >> 8) & 0xff00ff)) * a) + (c1 & 0xff00ff00)) & 0xff00ff00) + ((((((c0 & 0xff00ff) - (c1 & 0xff00ff)) * a) >> 8) + (c1 & 0xff00ff)) & 0xff00ff));
282 static inline SwCoord HALF_STROKE(float width)
284 return TO_SWCOORD(width * 0.5f);
287 int64_t mathMultiply(int64_t a, int64_t b);
288 int64_t mathDivide(int64_t a, int64_t b);
289 int64_t mathMulDiv(int64_t a, int64_t b, int64_t c);
290 void mathRotate(SwPoint& pt, SwFixed angle);
291 SwFixed mathTan(SwFixed angle);
292 SwFixed mathAtan(const SwPoint& pt);
293 SwFixed mathCos(SwFixed angle);
294 SwFixed mathSin(SwFixed angle);
295 void mathSplitCubic(SwPoint* base);
296 SwFixed mathDiff(SwFixed angle1, SwFixed angle2);
297 SwFixed mathLength(const SwPoint& pt);
298 bool mathSmallCubic(const SwPoint* base, SwFixed& angleIn, SwFixed& angleMid, SwFixed& angleOut);
299 SwFixed mathMean(SwFixed angle1, SwFixed angle2);
300 SwPoint mathTransform(const Point* to, const Matrix* transform);
301 bool mathUpdateOutlineBBox(const SwOutline* outline, const SwBBox& clipRegion, SwBBox& renderRegion, bool fastTrack);
302 bool mathClipBBox(const SwBBox& clipper, SwBBox& clipee);
304 void shapeReset(SwShape* shape);
305 bool shapePrepare(SwShape* shape, const Shape* sdata, const Matrix* transform, const SwBBox& clipRegion, SwBBox& renderRegion, SwMpool* mpool, unsigned tid, bool hasComposite);
306 bool shapePrepared(const SwShape* shape);
307 bool shapeGenRle(SwShape* shape, const Shape* sdata, bool antiAlias);
308 void shapeDelOutline(SwShape* shape, SwMpool* mpool, uint32_t tid);
309 void shapeResetStroke(SwShape* shape, const Shape* sdata, const Matrix* transform);
310 bool shapeGenStrokeRle(SwShape* shape, const Shape* sdata, const Matrix* transform, const SwBBox& clipRegion, SwBBox& renderRegion, SwMpool* mpool, unsigned tid);
311 void shapeFree(SwShape* shape);
312 void shapeDelStroke(SwShape* shape);
313 bool shapeGenFillColors(SwShape* shape, const Fill* fill, const Matrix* transform, SwSurface* surface, uint32_t opacity, bool ctable);
314 bool shapeGenStrokeFillColors(SwShape* shape, const Fill* fill, const Matrix* transform, SwSurface* surface, uint32_t opacity, bool ctable);
315 void shapeResetFill(SwShape* shape);
316 void shapeResetStrokeFill(SwShape* shape);
317 void shapeDelFill(SwShape* shape);
318 void shapeDelStrokeFill(SwShape* shape);
320 void strokeReset(SwStroke* stroke, const Shape* shape, const Matrix* transform);
321 bool strokeParseOutline(SwStroke* stroke, const SwOutline& outline);
322 SwOutline* strokeExportOutline(SwStroke* stroke, SwMpool* mpool, unsigned tid);
323 void strokeFree(SwStroke* stroke);
325 bool imagePrepare(SwImage* image, Polygon* triangles, uint32_t triangleCount, const Matrix* transform, const SwBBox& clipRegion, SwBBox& renderRegion, SwMpool* mpool, unsigned tid);
326 bool imageGenRle(SwImage* image, const SwBBox& renderRegion, bool antiAlias);
327 void imageDelOutline(SwImage* image, SwMpool* mpool, uint32_t tid);
328 void imageReset(SwImage* image);
329 void imageFree(SwImage* image);
331 bool fillGenColorTable(SwFill* fill, const Fill* fdata, const Matrix* transform, SwSurface* surface, uint32_t opacity, bool ctable);
332 void fillReset(SwFill* fill);
333 void fillFree(SwFill* fill);
334 void fillFetchLinear(const SwFill* fill, uint32_t* dst, uint32_t y, uint32_t x, uint32_t len);
335 void fillFetchRadial(const SwFill* fill, uint32_t* dst, uint32_t y, uint32_t x, uint32_t len);
337 SwRleData* rleRender(SwRleData* rle, const SwOutline* outline, const SwBBox& renderRegion, bool antiAlias);
338 void rleFree(SwRleData* rle);
339 void rleReset(SwRleData* rle);
340 void rleClipPath(SwRleData *rle, const SwRleData *clip);
341 void rleClipRect(SwRleData *rle, const SwBBox* clip);
343 SwMpool* mpoolInit(uint32_t threads);
344 bool mpoolTerm(SwMpool* mpool);
345 bool mpoolClear(SwMpool* mpool);
346 SwOutline* mpoolReqOutline(SwMpool* mpool, unsigned idx);
347 void mpoolRetOutline(SwMpool* mpool, unsigned idx);
348 SwOutline* mpoolReqStrokeOutline(SwMpool* mpool, unsigned idx);
349 void mpoolRetStrokeOutline(SwMpool* mpool, unsigned idx);
351 bool rasterCompositor(SwSurface* surface);
352 bool rasterGradientShape(SwSurface* surface, SwShape* shape, unsigned id);
353 bool rasterShape(SwSurface* surface, SwShape* shape, uint8_t r, uint8_t g, uint8_t b, uint8_t a);
354 bool rasterImage(SwSurface* surface, SwImage* image, const Matrix* transform, const SwBBox& bbox, uint32_t opacity);
355 bool rasterImageMesh(SwSurface* surface, SwImage* image, const Polygon* triangles, const uint32_t triangleCount, const Matrix* transform, const SwBBox& bbox, uint32_t opacity);
356 bool rasterStroke(SwSurface* surface, SwShape* shape, uint8_t r, uint8_t g, uint8_t b, uint8_t a);
357 bool rasterGradientStroke(SwSurface* surface, SwShape* shape, unsigned id);
358 bool rasterClear(SwSurface* surface);
359 void rasterRGBA32(uint32_t *dst, uint32_t val, uint32_t offset, int32_t len);
360 void rasterUnpremultiply(SwSurface* surface);
362 #endif /* _TVG_SW_COMMON_H_ */