1 /* 2 ** PCL6Rasterizer.h 3 ** Copyright 2005, Michael Pfeiffer, laplace@users.sourceforge.net. 4 ** All rights reserved. 5 ** Distributed under the terms of the MIT License. 6 */ 7 #ifndef _PCL6_RASTERIZER_H 8 #define _PCL6_RASTERIZER_H 9 10 11 #include "Rasterizer.h" 12 13 14 class PCL6Rasterizer : public Rasterizer 15 { 16 public: 17 PCL6Rasterizer(Halftone* halftone) 18 : 19 Rasterizer(halftone), 20 fOutBuffer(NULL), 21 fOutBufferSize(0) 22 {} 23 24 ~PCL6Rasterizer() 25 { 26 delete[] fOutBuffer; 27 fOutBuffer = NULL; 28 } 29 30 void SetOutBufferSize(int size) 31 { 32 fOutBufferSize = size; 33 } 34 int GetOutBufferSize() 35 { 36 return fOutBufferSize; 37 } 38 uchar* GetOutBuffer() 39 { 40 return fOutBuffer; 41 } 42 43 virtual void InitializeBuffer() 44 { 45 fOutBuffer = new uchar[fOutBufferSize]; 46 } 47 48 virtual int GetOutRowSize() = 0; 49 50 private: 51 uchar* fOutBuffer; 52 int fOutBufferSize; 53 }; 54 55 56 class MonochromeRasterizer : public PCL6Rasterizer 57 { 58 public: 59 MonochromeRasterizer(Halftone* halftone); 60 61 void InitializeBuffer(); 62 63 int GetOutRowSize() 64 { 65 return fOutRowSize; 66 } 67 68 const void* RasterizeLine(int x, int y, 69 const ColorRGB32Little* source); 70 71 private: 72 int fWidthByte; 73 int fOutRowSize; 74 int fPadBytes; 75 int fOutSize; 76 uchar* fOutBuffer; 77 uchar* fCurrentLine; 78 }; 79 80 81 // Output format RGB 8bit per channel 82 class ColorRGBRasterizer : public PCL6Rasterizer 83 { 84 public: 85 ColorRGBRasterizer(Halftone* halftone); 86 87 void InitializeBuffer(); 88 89 int GetOutRowSize() 90 { 91 return fOutRowSize; 92 } 93 94 const void* RasterizeLine(int x, int y, 95 const ColorRGB32Little* source); 96 97 private: 98 int fWidthByte; 99 int fOutRowSize; 100 int fPadBytes; 101 uchar* fCurrentLine; 102 }; 103 104 105 typedef uchar* PlaneBuffer; 106 107 108 // Output format: RGB 1bit per channel 109 // Class Halftone is used for dithering 110 class ColorRasterizer : public PCL6Rasterizer 111 { 112 public: 113 ColorRasterizer(Halftone* halftone); 114 115 ~ColorRasterizer(); 116 117 void InitializeBuffer(); 118 119 int GetOutRowSize() 120 { 121 return fOutRowSize; 122 } 123 124 const void* RasterizeLine(int x, int y, 125 const ColorRGB32Little* source); 126 127 private: 128 void MergePlaneBuffersToCurrentLine(); 129 130 int fWidthByte; 131 int fOutRowSize; 132 int fPadBytes; 133 uchar* fCurrentLine; 134 135 int fPlaneBufferSize; 136 PlaneBuffer fPlaneBuffers[3]; 137 }; 138 139 #endif // _PCL6_RASTERIZER_H 140