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41 
42 #ifndef _GRFMT_BMP_H_
43 #define _GRFMT_BMP_H_
44 
45 #include "grfmt_base.h"
46 
47 enum BmpCompression
48 {
49     BMP_RGB = 0,
50     BMP_RLE8 = 1,
51     BMP_RLE4 = 2,
52     BMP_BITFIELDS = 3
53 };
54 
55 
56 // Windows Bitmap reader
57 class GrFmtBmpReader : public GrFmtReader
58 {
59 public:
60 
61     GrFmtBmpReader( const char* filename );
62     ~GrFmtBmpReader();
63 
64     bool  ReadData( uchar* data, int step, int color );
65     bool  ReadHeader();
66     void  Close();
67 
68 protected:
69 
70     RLByteStream    m_strm;
71     PaletteEntry    m_palette[256];
72     int             m_bpp;
73     int             m_offset;
74     BmpCompression  m_rle_code;
75 };
76 
77 
78 // ... writer
79 class GrFmtBmpWriter : public GrFmtWriter
80 {
81 public:
82 
83     GrFmtBmpWriter( const char* filename );
84     ~GrFmtBmpWriter();
85 
86     bool  WriteImage( const uchar* data, int step,
87                       int width, int height, int depth, int channels );
88 protected:
89 
90     WLByteStream  m_strm;
91 };
92 
93 
94 // ... and filter factory
95 class GrFmtBmp : public GrFmtFilterFactory
96 {
97 public:
98 
99     GrFmtBmp();
100     ~GrFmtBmp();
101 
102     GrFmtReader* NewReader( const char* filename );
103     GrFmtWriter* NewWriter( const char* filename );
104 
105 };
106 
107 #endif/*_GRFMT_BMP_H_*/
108