NAME¶
Image::Info:BMP - Windows Device Indepdent 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 modules 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 color 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, the filesize does not match the internally
stored value.
BUGS¶
The current implementation only function 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.