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#
# Multi::Image - Image compressing and resizing
#
package Multi::Image;
use strict;
use warnings;
use POE;
use Image::Magick;
use Time::HiRes 'time';
use VNDBUtil 'imgsize';
sub spawn {
my $p = shift;
POE::Session->create(
package_states => [
$p => [qw| _start
_start shutdown cv_check cv_process scr_check scr_process
|],
],
heap => {
cvpath => $VNDB::ROOT.'/static/cv',
sfpath => $VNDB::ROOT.'/static/sf',
stpath => $VNDB::ROOT.'/static/st',
check_delay => 3600,
@_,
},
);
}
sub _start {
$_[KERNEL]->alias_set('image');
$_[KERNEL]->sig(shutdown => 'shutdown');
$_[KERNEL]->post(pg => listen => coverimage => 'cv_check', screenshot => 'scr_check');
$_[KERNEL]->yield('cv_check');
$_[KERNEL]->yield('scr_check');
}
sub shutdown {
$_[KERNEL]->post(pg => unlisten => 'coverimage', 'screenshot');
$_[KERNEL]->delay('cv_check');
$_[KERNEL]->delay('scr_check');
$_[KERNEL]->alias_remove('image');
}
sub cv_check {
$_[KERNEL]->delay('cv_check');
$_[KERNEL]->post(pg => query => 'SELECT image FROM vn_rev WHERE image < 0 LIMIT 1', undef, 'cv_process');
}
sub cv_process { # num, res
return $_[KERNEL]->delay(cv_check => $_[HEAP]{check_delay}) if $_[ARG0] == 0;
my $id = -1*$_[ARG1][0]{image};
my $start = time;
my $img = sprintf '%s/%02d/%d.jpg', $_[HEAP]{cvpath}, $id%100, $id;
my $os = -s $img;
my $im = Image::Magick->new;
$im->Read($img);
$im->Set(magick => 'JPEG');
my($ow, $oh) = ($im->Get('width'), $im->Get('height'));
my($nw, $nh) = imgsize($ow, $oh, @{$VNDB::S{cv_size}});
$im->Thumbnail(width => $nw, height => $nh);
$im->Set(quality => 80);
$im->Write($img);
$_[KERNEL]->post(pg => do => 'UPDATE vn_rev SET image = image*-1 WHERE image = ?', [ -1*$id ]);
$_[KERNEL]->call(core => log => 'Processed cover image %d in %.2fs: %.2fkB (%dx%d) -> %.2fkB (%dx%d)',
$id, time-$start, $os/1024, $ow, $oh, (-s $img)/1024, $nw, $nh);
$_[KERNEL]->yield('cv_check');
}
sub scr_check {
$_[KERNEL]->delay('scr_check');
$_[KERNEL]->post(pg => query => 'SELECT id FROM screenshots WHERE processed = false LIMIT 1', undef, 'scr_process');
}
sub scr_process { # num, res
return $_[KERNEL]->delay(scr_check => $_[HEAP]{check_delay}) if $_[ARG0] == 0;
my $id = $_[ARG1][0]{id};
my $start = time;
my $sf = sprintf '%s/%02d/%d.jpg', $_[HEAP]{sfpath}, $id%100, $id;
my $st = sprintf '%s/%02d/%d.jpg', $_[HEAP]{stpath}, $id%100, $id;
my $os = -s $sf;
# convert/compress full-size image
my $im = Image::Magick->new;
$im->Read($sf);
$im->Set(magick => 'JPEG');
$im->Set(quality => 90);
$im->Write($sf);
# create thumbnail
my($ow, $oh) = ($im->Get('width'), $im->Get('height'));
my($nw, $nh) = imgsize($ow, $oh, @{$VNDB::S{scr_size}});
$im->Thumbnail(width => $nw, height => $nh);
$im->Set(quality => 90);
$im->Write($st);
$_[KERNEL]->post(pg => do =>
'UPDATE screenshots SET processed = true, width = ?, height = ? WHERE id = ?',
[ $ow, $oh, $id ]
);
$_[KERNEL]->call(core => log =>
'Processed screenshot #%d in %.2fs: %.1fkB -> %.1fkB (%dx%d), thumb: %.1fkB (%dx%d)',
$id, time-$start, $os/1024, (-s $sf)/1024, $ow, $oh, (-s $st)/1024, $nw, $nh
);
$_[KERNEL]->yield('scr_check');
}
1;
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