/usr/share/perl5/Graphics/Color/YUV.pm is in libgraphics-color-perl 0.29-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 | package Graphics::Color::YUV;
BEGIN {
$Graphics::Color::YUV::VERSION = '0.29';
}
use Moose;
use MooseX::Aliases;
extends qw(Graphics::Color);
# ABSTRACT: YUV color space
use Graphics::Color::Types qw(NumberOneOrLess);
has 'luma' => (
is => 'rw',
isa => NumberOneOrLess,
default => 0,
alias => 'y'
);
has 'blue_luminance' => (
is => 'rw',
isa => NumberOneOrLess,
default => 0,
alias => 'u'
);
has 'red_luminance' => (
is => 'rw',
isa => NumberOneOrLess,
default => 0,
alias => 'v'
);
has 'name' => ( is => 'rw', isa => 'Str' );
sub as_string {
my ($self) = @_;
return sprintf('%s,%s,%s',
$self->luma, $self->blue_luminance, $self->red_luminance
);
}
sub as_array {
my ($self) = @_;
return ($self->luma, $self->blue_luminance, $self->red_luminance);
}
sub equal_to {
my ($self, $other) = @_;
return 0 unless defined($other);
unless($self->luma == $other->luma) {
return 0;
}
unless($self->blue_luminance == $other->blue_luminance) {
return 0;
}
unless($self->red_luminance == $other->red_luminance) {
return 0;
}
return 1;
}
# TODO RGB Conversion
# OLD STYLE : Y' = 0.299R + 0.587G + 0.114B
# NEW STYLE: Y' = 0.2125R + 0.7154G + 0.0721B
# U = B - Y'
# V = R - Y'
#
# http://www.fourcc.org/fccyvrgb.php
__PACKAGE__->meta->make_immutable;
no Moose;
1;
__END__
=pod
=head1 NAME
Graphics::Color::YUV - YUV color space
=head1 VERSION
version 0.29
=head1 SYNOPSIS
use Graphics::Color::YUV;
my $color = Graphics::Color::YUV->new({
luma => .5,
blue_luminance => .5,
red_luminance => .25,
});
=head1 DESCRIPTION
Graphics::Color::YUV represents a Color in an Y'UV color space.
=head1 ATTRIBUTES
=head2 luma
=head2 y
Set/Get the luma (Y') component of this Color. Aliased to y.
=head2 blue_luminance
=head2 u
Set/Get the blue_luminance component of this Color. Aliased to u.
=head2 red_luminance
=head2 v
Set/Get the red_luminance component of this Color. Aliased to v.
=head1 METHODS
=head2 name
Get the name of this color. Only valid if the color was created by name.
=head2 as_string
Get a string version of this Color in the form of:
LUMA,BLUE_LUMINENCE,RED_LUMINANCE
=head2 as_array
Get the YUV values as an array
=head2 equal_to
Compares this color to the provided one. Returns 1 if true, else 0;
=head2 not_equal_to
The opposite of equal_to.
=head1 AUTHOR
Cory G Watson <gphat@cpan.org>
=head1 COPYRIGHT AND LICENSE
This software is copyright (c) 2011 by Cold Hard Code, LLC.
This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.
=cut
|