}
}
+sub get_mipmap_location {
+ my ($r, $id, $width, $height) = @_;
+ my $dir = POSIX::floor($id / 256);
+
+ return get_base($r) . "cache/$dir/$id-mipmap-$width-$height.jpg";
+}
+
sub update_image_info {
my ($r, $id, $width, $height) = @_;
return ($fname, $size, $mtime);
}
+# Takes in an image ID and a set of resolutions, and returns (generates if needed)
+# the smallest mipmap larger than the largest of them.
+sub make_mipmap {
+ my ($r, $filename, $id, $dbwidth, $dbheight, @res) = @_;
+ my ($img, $mmimg, $width, $height);
+
+ # If we don't know the size, we'll need to read it in anyway
+ if (!defined($dbwidth) || !defined($dbheight)) {
+ $img = read_original_image($r, $id, $dbwidth, $dbheight);
+ $width = $img->Get('columns');
+ $height = $img->Get('rows');
+ } else {
+ $width = $dbwidth;
+ $height = $dbheight;
+ }
+
+ # Generate the list of mipmaps
+ my @mmlist = ();
+
+ my $mmwidth = $width;
+ my $mmheight = $height;
+
+ while ($mmwidth > 1 || $mmheight > 1) {
+ my $new_mmwidth = POSIX::floor($mmwidth / 2);
+ my $new_mmheight = POSIX::floor($mmheight / 2);
+
+ $new_mmwidth = 1 if ($new_mmwidth < 1);
+ $new_mmheight = 1 if ($new_mmheight < 1);
+
+ my $large_enough = 1;
+ for my $i (0..($#res/2)) {
+ my ($xres, $yres) = ($res[$i*2], $res[$i*2+1]);
+ if ($xres > $new_mmwidth || $yres > $new_mmheight) {
+ $large_enough = 0;
+ last;
+ }
+ }
+
+ last if (!$large_enough);
+
+ $mmwidth = $new_mmwidth;
+ $mmheight = $new_mmheight;
+
+ push @mmlist, [ $mmwidth, $mmheight ];
+ }
+
+ # Ensure that all of them are OK
+ my $last_good_mmlocation;
+ for my $i (0..$#mmlist) {
+ my $last = ($i == $#mmlist);
+ my $mmres = $mmlist[$i];
+
+ my $mmlocation = get_mipmap_location($r, $id, $mmres->[0], $mmres->[1]);
+ if (! -r $mmlocation or (-M $mmlocation > -M $filename)) {
+ if (!defined($img)) {
+ if (defined($last_good_mmlocation)) {
+ $img = Image::Magick->new;
+ $img->Read($last_good_mmlocation);
+ } else {
+ $img = read_original_image($r, $id, $dbwidth, $dbheight);
+ }
+ }
+ my $cimg;
+ if ($last) {
+ $cimg = $img;
+ } else {
+ $cimg = $img->Clone();
+ }
+ $r->log->info("Making mipmap for $id: " . $mmres->[0] . " x " . $mmres->[1]);
+ $cimg->Resize(width=>$mmres->[0], height=>$mmres->[1], filter=>'Lanczos');
+ $cimg->Strip();
+ my $err = $cimg->write(
+ filename => $mmlocation,
+ quality => 95,
+ 'sampling-factor' => '1x1'
+ );
+ $img = $cimg;
+ } else {
+ $last_good_mmlocation = $mmlocation;
+ }
+ if ($last && !defined($img)) {
+ # OK, read in the smallest one
+ $img = Image::Magick->new;
+ my $err = $img->Read($mmlocation);
+ }
+ }
+
+ return $img;
+}
+
+sub read_original_image {
+ my ($r, $id, $dbwidth, $dbheight) = @_;
+
+ my $fname = get_disk_location($r, $id);
+
+ # Read in the original image
+ my $magick = new Image::Magick;
+ my $err;
+
+ # ImageMagick can handle NEF files, but it does it by calling dcraw as a delegate.
+ # The delegate support is rather broken and causes very odd stuff to happen when
+ # more than one thread does this at the same time. Thus, we simply do it ourselves.
+ if ($fname =~ /\.nef$/i) {
+ # this would suffice if ImageMagick gets to fix their handling
+ # $fname = "NEF:$fname";
+
+ open DCRAW, "-|", "dcraw", "-w", "-c", $fname
+ or error("dcraw: $!");
+ $err = $magick->Read(file => \*DCRAW);
+ close(DCRAW);
+ } else {
+ # We always want YCbCr JPEGs. Setting this explicitly here instead of using
+ # RGB is slightly faster (no colorspace conversion needed) and works equally
+ # well for our uses, as long as we don't need to draw an information box,
+ # which trickles several ImageMagick bugs related to colorspace handling.
+ # (Ideally we'd be able to keep the image subsampled and
+ # planar, but that would probably be difficult for ImageMagick to expose.)
+ #if (!$infobox) {
+ # $magick->Set(colorspace=>'YCbCr');
+ #}
+ $err = $magick->Read($fname);
+ }
+
+ if ($err) {
+ $r->log->warn("$fname: $err");
+ $err =~ /(\d+)/;
+ if ($1 >= 400) {
+ undef $magick;
+ error($r, "$fname: $err");
+ }
+ }
+
+ # If we use ->[0] unconditionally, text rendering (!) seems to crash
+ my $img = (scalar @$magick > 1) ? $magick->[0] : $magick;
+
+ my $width = $img->Get('columns');
+ my $height = $img->Get('rows');
+
+ # Update the SQL database if it doesn't contain the required info
+ if (!defined($dbwidth) || !defined($dbheight)) {
+ $r->log->info("Updating width/height for $id: $width x $height");
+ update_image_info($r, $id, $width, $height);
+ }
+
+ return $img;
+}
+
sub ensure_cached {
my ($r, $filename, $id, $dbwidth, $dbheight, $infobox, $xres, $yres, @otherres) = @_;
}
my $cachename = get_cache_location($r, $id, $xres, $yres, $infobox);
+ my $err;
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');
}
- # Need to generate the cache; read in the image
- my $magick = new Image::Magick;
- my $info = Image::ExifTool::ImageInfo($fname);
- my $err;
-
- # ImageMagick can handle NEF files, but it does it by calling dcraw as a delegate.
- # The delegate support is rather broken and causes very odd stuff to happen when
- # more than one thread does this at the same time. Thus, we simply do it ourselves.
- if ($filename =~ /\.nef$/i) {
- # this would suffice if ImageMagick gets to fix their handling
- # $fname = "NEF:$fname";
-
- open DCRAW, "-|", "dcraw", "-w", "-c", $fname
- or error("dcraw: $!");
- $err = $magick->Read(file => \*DCRAW);
- close(DCRAW);
- } else {
- $err = $magick->Read($fname);
- }
-
- if ($err) {
- $r->log->warn("$fname: $err");
- $err =~ /(\d+)/;
- if ($1 >= 400) {
- undef $magick;
- error($r, "$fname: $err");
- }
- }
-
- # If we use ->[0] unconditionally, text rendering (!) seems to crash
- my $img = (scalar @$magick > 1) ? $magick->[0] : $magick;
-
- my $width = $img->Get('columns');
- my $height = $img->Get('rows');
-
- # Update the SQL database if it doesn't contain the required info
- if (!defined($dbwidth) || !defined($dbheight)) {
- $r->log->info("Updating width/height for $id: $width x $height");
- update_image_info($r, $id, $width, $height);
- }
-
- # We always want RGB JPEGs
- if ($img->Get('Colorspace') eq "CMYK") {
- $img->Set(colorspace=>'RGB');
- }
+ my $img = make_mipmap($r, $fname, $id, $dbwidth, $dbheight, $xres, $yres, @otherres);
while (defined($xres) && defined($yres)) {
my ($nxres, $nyres) = (shift @otherres, shift @otherres);
$cimg = $img;
}
+ my $width = $img->Get('columns');
+ my $height = $img->Get('rows');
my ($nwidth, $nheight) = scale_aspect($width, $height, $xres, $yres);
# Use lanczos (sharper) for heavy scaling, mitchell (faster) otherwise
}
if (($nwidth >= 800 || $nheight >= 600 || $xres == -1) && $infobox == 1) {
+ my $info = Image::ExifTool::ImageInfo($fname);
make_infobox($cimg, $info, $r);
}
$r->log->info("New cache: $nwidth x $nheight for $id.jpg");
}
- undef $magick;
undef $img;
if ($err) {
$r->log->warn("$fname: $err");
$err =~ /(\d+)/;
if ($1 >= 400) {
- @$magick = ();
+ #@$magick = ();
error($r, "$fname: $err");
}
}
# Apache2::ServerUtil->server->log_error(join(':', keys %$info));
+ my $iso = undef;
if (defined($info->{'NikonD1-ISOSetting'})) {
- push @classic_fields, [ $info->{'NikonD1-ISOSetting'}->[1] . " ISO", 0 ];
- } elsif (defined($info->{'ISOSetting'})) {
- push @classic_fields, [ $info->{'ISOSetting'} . " ISO" ];
+ $iso = $info->{'NikonD1-ISOSetting'};
} elsif (defined($info->{'ISO'})) {
- push @classic_fields, [ $info->{'ISO'} . " ISO" ];
+ $iso = $info->{'ISO'};
+ } elsif (defined($info->{'ISOSetting'})) {
+ $iso = $info->{'ISOSetting'};
+ }
+ if (defined($iso) && $iso =~ /(\d+)/) {
+ push @classic_fields, [ $1 . " ISO", 0 ];
}
if (defined($info->{'ExposureBiasValue'}) && $info->{'ExposureBiasValue'} ne "0") {
projects / pr0n / blobdiff