use URI::Escape;
use File::Basename;
use Crypt::Eksblowfish::Bcrypt;
+use File::Temp;
BEGIN {
use Exporter ();
}
sub get_cache_location {
- my ($id, $width, $height) = @_;
+ my ($id, $width, $height, $format) = @_;
my $dir = POSIX::floor($id / 256);
- return $Sesse::pr0n::Config::image_base . "cache/$dir/$id-$width-$height-nobox.jpg";
+ return $Sesse::pr0n::Config::image_base . "cache/$dir/$id-$width-$height-nobox.$format";
}
sub get_infobox_cache_location {
}
sub ensure_cached {
- my ($r, $filename, $id, $dbwidth, $dbheight, $xres, $yres, @otherres) = @_;
+ my ($r, $avif_ok, $filename, $id, $dbwidth, $dbheight, $xres, $yres, @otherres) = @_;
my $fname = get_disk_location($r, $id);
unless (defined($xres) && (!defined($dbwidth) || !defined($dbheight) || $xres < $dbwidth || $yres < $dbheight || $xres == -1)) {
return ($fname, undef);
}
- my $cachename = get_cache_location($id, $xres, $yres);
+ # See if we have an up-to-date AVIF to serve.
+ # (We never generate them on-the-fly, since they're so slow.)
+ my $cachename = get_cache_location($id, $xres, $yres, 'avif');
+ if ($avif_ok && -r $cachename and (-M $cachename <= -M $fname)) {
+ return ($cachename, 'image/avif');
+ }
+
+ $cachename = get_cache_location($id, $xres, $yres, 'jpg');
if (! -r $cachename or (-M $cachename > -M $fname)) {
# If we are in overload mode (aka Slashdot mode), refuse to generate
# new thumbnails.
error($r, 'System is in overload mode, not doing any scaling');
}
- make_cache($r, $filename, $id, $dbwidth, $dbheight, $xres, $yres, @otherres);
+ make_cache($r, $filename, $id, $dbwidth, $dbheight, 'jpg', $xres, $yres, @otherres);
}
return ($cachename, 'image/jpeg');
}
sub make_cache {
- my ($r, $filename, $id, $dbwidth, $dbheight, $xres, $yres, @otherres) = @_;
+ my ($r, $filename, $id, $dbwidth, $dbheight, $format, $xres, $yres, @otherres) = @_;
my ($img, $new_dbwidth, $new_dbheight) = make_mipmap($r, $filename, $id, $dbwidth, $dbheight, $xres, $yres, @otherres);
my $err;
while (defined($xres) && defined($yres)) {
my ($nxres, $nyres) = (shift @otherres, shift @otherres);
- my $cachename = get_cache_location($id, $xres, $yres);
+ my $cachename = get_cache_location($id, $xres, $yres, $format);
my $cimg;
if (defined($nxres) && defined($nyres)) {
my $height = $img->Get('rows');
my ($nwidth, $nheight) = scale_aspect($width, $height, $xres, $yres);
+ if ($format eq 'avif') { # AVIF uses 4:2:0.
+ ++$nwidth if ($nwidth % 2 == 1);
+ ++$nheight if ($nheight % 2 == 1);
+ }
+
my $filter = 'Lanczos';
my $quality = 87;
my $sf = "1x1";
# Strip EXIF tags etc.
$cimg->Strip();
- {
+ if ($format eq 'jpg') {
my %parms = (
filename => $cachename,
quality => $quality
$parms{'sampling-factor'} = $sf;
}
$err = $cimg->write(%parms);
+ } elsif ($format eq 'avif') {
+ # ImageMagick doesn't have AVIF support until version 7,
+ # and Debian hasn't packaged that even in unstable as of 2021.
+ # So we'll need to do it the manual way. (We don't use /tmp, for security reasons.)
+ (my $dirname = $cachename) =~ s,/[^/]*$,,;
+ my ($fh, $raw_filename) = File::Temp::tempfile('tmp.XXXXXXXX', DIR => $dirname, SUFFIX => '.yuv');
+ # Write a Y4M header, so that we get the chroma siting and color space correct.
+ printf $fh "YUV4MPEG2 W%d H%d F25:1 Ip A1:1 C420jpeg XYSCSS=420JPEG XCOLORRANGE=FULL\nFRAME\n", $nwidth, $nheight;
+ my %parms = (
+ file => $fh,
+ filename => $raw_filename,
+ 'sampling-factor' => '2x2'
+ );
+ $cimg->write(%parms);
+ close($fh);
+ my $ivf_filename;
+ ($fh, $ivf_filename) = File::Temp::tempfile('tmp.XXXXXXXX', DIR => $dirname, SUFFIX => '.ivf');
+ close($fh);
+ system('aomenc', '--quiet', '--cpu-used=0', '--bit-depth=10', '--end-usage=q', '--cq-level=10', '--target-bitrate=0', '--good', '--aq-mode=1', '--color-primaries=bt601', '--matrix-coefficients=bt601', '-o', $ivf_filename, $raw_filename);
+ unlink($raw_filename);
+ system('MP4Box', '-quiet', '-add-image', "$ivf_filename:primary", '-ab', 'avif', '-ab', 'miaf', '-new', $cachename);
+ unlink($ivf_filename);
+ } else {
+ die "Unknown format $format";
}
undef $cimg;
($xres, $yres) = ($nxres, $nyres);
- log_info($r, "New cache: $nwidth x $nheight for $id.jpg");
+ log_info($r, "New cache: $nwidth x $nheight ($format) for $id");
}
undef $img;