NAME

       Image::Info::BMP - Windows Device Independent Bitmap support for Image::Info

SYNOPSIS

        use Image::Info qw(image_info dim);

        my $info = image_info("image.bmp");
        if (my $error = $info->{error}) {
            die "Can't parse image info: $error\n";
        }
        my $color = $info->{color_type};

        my($w, $h) = dim($info);

DESCRIPTION

       This module supplies the standard key names except for Gamma, Interlace, LastModificationTime, as well
       as:

       BMP_ColorsImportant
           Specifies  the  number of color indexes that are required for displaying the bitmap. If this value is
           zero, all colors are required.

       BMP_Origin
           If true the bitmap is a bottom-up DIB and its origin is the lower-left corner.  Otherwise, the bitmap
           is a top-down DIB and its origin is the upper-left corner.

       ColorPalette
           Reference to an array of all colors used.  This key is only present if  "image_info"  is  invoked  as
           "image_info($file, ColorPalette=>1)".

       ColorTableSize
           The  number  of  colors  the image uses.  If 0 then this is a true color image.  The number of colors
           available is 2 ^ BitsPerSample.

METHODS

   process_file()
               $info->process_file($source, $options);

       Processes one file and sets the found info fields in the $info object.

SEE ALSO

       Image::Info

NOTES

       For more information about BMP see <http://msdn.microsoft.com>.

       Random notes:

         warn if height is negative and compress is not RGB or BITFILEDS (0 or 3)
         ICO and CUR support?
         ### v5
         If bit depth is 0, it relies upon underlying JPG/PNG :-(
         Extra Information
           DWORD        bV5RedMask;
           DWORD        bV5GreenMask;
           DWORD        bV5BlueMask;
           DWORD        bV5AlphaMask;
           DWORD        bV5CSType;
           CIEXYZTRIPLE bV5EndPoints; #3*CIEXYZ #CIEXYZ = 3*FXPT2DOT30#FXPT2DOT30 = long
           DWORD        bV5GammaRed;
           DWORD        bV5GammaGreen;
           DWORD        bV5GammaBlue;
           DWORD        bV5Intent;
           DWORD        bV5ProfileData;
           DWORD        bV5ProfileSize;

DIAGNOSTICS

       Size mismatch
           The image may be correct, but the filesize does not match the internally stored value.

BUGS

       The current implementation only functions on little-endian architectures.   Consequently  erroneous  data
       concerning compression (including file_ext and file_mime_type) may be reported.

AUTHOR

       Jerrad Pierce <belg4mit@mit.edu>/<webmaster@pthbb.org>

       This  library  is  free  software;  you can redistribute it and/or modify it under the same terms as Perl
       itself.

perl v5.38.2                                       2024-02-01                              Image::Info::BMP(3pm)