src/thirdparty/VirtualDub/h/vd2/Kasumi/region.h

   1 //      VirtualDub - Video processing and capture application
   2 //      Graphics support library
   3 //      Copyright (C) 1998-2009 Avery Lee
   4 //
   5 //      This program is free software; you can redistribute it and/or modify
   6 //      it under the terms of the GNU General Public License as published by
   7 //      the Free Software Foundation; either version 2 of the License, or
   8 //      (at your option) any later version.
   9 //
  10 //      This program is distributed in the hope that it will be useful,
  11 //      but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 //      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 //      GNU General Public License for more details.
  14 //
  15 //      You should have received a copy of the GNU General Public License
  16 //      along with this program; if not, write to the Free Software
  17 //      Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18
  19 #ifndef f_VD2_KASUMI_REGION_H
  20 #define f_VD2_KASUMI_REGION_H
  21
  22 struct VDPixmap;
  23
  24 #include <vd2/system/vectors.h>
  25 #include <vd2/system/vdstl.h>
  26
  27 class VDPixmapRegion {
  28 public:
  29         void swap(VDPixmapRegion& x);
  30         void clear();
  31
  32 public:
  33         vdfastvector<uint32> mSpans;
  34         vdrect32        mBounds;
  35 };
  36
  37 class VDPixmapPathRasterizer {
  38 public:
  39         VDPixmapPathRasterizer();
  40         VDPixmapPathRasterizer(const VDPixmapPathRasterizer&);  // no-op
  41         ~VDPixmapPathRasterizer();
  42
  43         VDPixmapPathRasterizer& operator=(const VDPixmapPathRasterizer&);       // no-op
  44
  45         void Clear();
  46         void QuadraticBezier(const vdint2 pts[4]);
  47         void CubicBezier(const vdint2 pts[4]);
  48         void Line(const vdint2& pt1, const vdint2& pt2);
  49         void FastLine(int x0, int y0, int x1, int y1);
  50
  51         void ScanConvert(VDPixmapRegion& region);
  52
  53 protected:
  54         void ClearEdgeList();
  55         void FreeEdgeLists();
  56         void ClearScanBuffer();
  57         void ReallocateScanBuffer(int ymin, int ymax);
  58
  59         struct Edge {
  60                 Edge *next;
  61                 int posandflag;
  62         };
  63
  64         enum { kEdgeBlockMax = 1024 };
  65
  66         struct EdgeBlock {
  67                 EdgeBlock *next;
  68                 Edge edges[1024];
  69
  70                 EdgeBlock(EdgeBlock *p) : next(p) {}
  71         };
  72
  73         struct Scan {
  74                 Edge *chain;
  75                 uint32 count;
  76         };
  77
  78         EdgeBlock *mpEdgeBlocks;
  79         EdgeBlock *mpFreeEdgeBlocks;
  80         int mEdgeBlockIdx;
  81         Scan *mpScanBuffer;
  82         Scan *mpScanBufferBiased;
  83         int mScanYMin;
  84         int mScanYMax;
  85 };
  86
  87 bool VDPixmapFillRegion(const VDPixmap& dst, const VDPixmapRegion& region, int x, int y, uint32 color);
  88 bool VDPixmapFillRegionAntialiased8x(const VDPixmap& dst, const VDPixmapRegion& region, int x, int y, uint32 color);
  89
  90 void VDPixmapCreateRoundRegion(VDPixmapRegion& dst, float r);
  91 void VDPixmapConvolveRegion(VDPixmapRegion& dst, const VDPixmapRegion& r1, const VDPixmapRegion& r2, VDPixmapRegion *tempCache = NULL);
  92
  93 #endif