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1 // Filename : marksheet.h
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2 // Last Change: 15-Oct-2011.
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3 //
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4 #ifndef __MARKSHEET__
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5 #define __MARKSHEET__
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6
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7
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8 #include "wx/utils.h"
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9 #include "wx/file.h"
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10 #include "wx/string.h"
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11 #include "wx/image.h"
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12
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13 bool IsBlack( int r, int g, int b )
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14 {
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15 if ( r == 0 && g == 0 && b == 0 ) {
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16 return true;
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17 }
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18 return false;
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19 };
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20
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21 wxString GuessHhs( wxString& file )
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22 {
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23 wxString hhs;
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24 wxImage img( file, wxBITMAP_TYPE_JPEG );
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25 int sx = 1800; // start x
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26 int sy = 315;; // start y
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27 int bw = 60; // block width
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28 int bh = 50; // block height
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29 int area = bw * bh;
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30 int black = 0;
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31 int x, y;
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32 unsigned char r, g, b;
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33
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34 int max_n;
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35 float max;
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36 float bk;
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37 for ( int c=0; c<10; c++ ) {
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38 max = 0.0;
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39 max_n = -1;
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40 for ( int n=0; n<10; n++ ) {
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41
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42 for ( x=sx+bw*c; x<sx+bw*(c+1); x++ ) {
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43 for ( y=sy+bh*n; y<sy+bh*(n+1); y++ ) {
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44 r = img.GetRed( x, y );
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45 g = img.GetGreen( x, y );
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46 b = img.GetBlue( x, y );
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47 if( IsBlack( (int)r, (int)g, (int)b ) ) black++;
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48 }
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49 }
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50
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51 bk = (float)black / area;
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52 if ( max < bk ) {
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53 max = bk;
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54 max_n = n;
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55 }
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56 //wxPuts(wxString::Format(wxT("%d %f"),n,bk));
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57 black = 0;
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58 }
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59 hhs.Append( wxString::Format( wxT("%d"), max_n ) );
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60 }
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61
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62 return hhs;
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63 };
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64
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65 bool IsMarksheet( wxString& file, float* brate, long* len )
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66 {
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67 wxImage img( file, wxBITMAP_TYPE_JPEG );
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68 int black = 0;
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69 int x = 2465;
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70 int h = 3500;
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71 unsigned char r, g, b;
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72
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73 for ( int y=0; y<h; y++ ) {
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74 r = img.GetRed( x, y );
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75 g = img.GetGreen( x, y );
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76 b = img.GetBlue( x, y );
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77 if( IsBlack( (int)r, (int)g, (int)b ) ) black++;
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78 }
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79 float z = (float)black / h;
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80 float zmin = 0.095713;
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81 float zmax = 0.108600;
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82
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83 wxFile f( file );
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84 long l = f.Length();
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85 float lmin = 2072393;
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86 float lmax = 2346082;
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87
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88 *brate = z;
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89 *len = l;
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90 //wxPuts(wxString::Format(wxT("z = %f, len = %d"),z,len));
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91 if ( zmin < z && z < zmax
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92 && lmin < l && l < lmax ) {
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93 return true;
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94 }
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95 return false;
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96 };
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97
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98 #endif // __MARKSHEET__
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99
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