1Image::Info::BMP(3) User Contributed Perl Documentation Image::Info::BMP(3)
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6 Image::Info:BMP - Windows Device Indepdent Bitmap support for
7 Image::Info
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10 use Image::Info qw(image_info dim);
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12 my $info = image_info("image.bmp");
13 if (my $error = $info->{error}) {
14 die "Can't parse image info: $error\n";
15 }
16 my $color = $info->{color_type};
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18 my($w, $h) = dim($info);
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21 This modules supplies the standard key names except for Gamma,
22 Interlace, LastModificationTime, as well as:
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24 BMP_ColorsImportant
25 Specifies the number of color indexes that are required for
26 displaying the bitmap. If this value is zero, all colors are
27 required.
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29 BMP_Origin
30 If true the bitmap is a bottom-up DIB and its origin is the lower-
31 left corner. Otherwise, the bitmap is a top-down DIB and its
32 origin is the upper-left corner.
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34 ColorPalette
35 Reference to an array of all colors used. This key is only present
36 if "image_info" is invoked as "image_info($file, ColorPalette=>1)".
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38 ColorTableSize
39 The number of colors the image uses. If 0 then this is a true
40 color image. The number of color available is 2 ^ BitsPerSample.
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43 process_file()
44 $info->process_file($source, $options);
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46 Processes one file and sets the found info fields in the $info object.
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49 Image::Info
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52 For more information about BMP see:
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54 http://msdn.microsoft.com
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56 Random notes:
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58 warn if height is negative and compress is not RGB or BITFILEDS (0 or 3)
59 ICO and CUR support?
60 ### v5
61 If bit depth is 0, it relies upon underlying JPG/PNG :-(
62 Extra Information
63 DWORD bV5RedMask;
64 DWORD bV5GreenMask;
65 DWORD bV5BlueMask;
66 DWORD bV5AlphaMask;
67 DWORD bV5CSType;
68 CIEXYZTRIPLE bV5EndPoints; #3*CIEXYZ #CIEXYZ = 3*FXPT2DOT30#FXPT2DOT30 = long
69 DWORD bV5GammaRed;
70 DWORD bV5GammaGreen;
71 DWORD bV5GammaBlue;
72 DWORD bV5Intent;
73 DWORD bV5ProfileData;
74 DWORD bV5ProfileSize;
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77 Size mismatch
78 The image may be correct, the filesize does not match the
79 internally stored value.
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82 The current implementation only function on little-endian
83 architectures. Consequently erroneous data concerning compression
84 (including file_ext and file_mime_type) may be reported.
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87 Jerrad Pierce <belg4mit@mit.edu>/<webmaster@pthbb.org>
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89 This library is free software; you can redistribute it and/or modify it
90 under the same terms as Perl itself.
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94perl v5.10.1 2006-03-03 Image::Info::BMP(3)