#!perl -w
use strict;
-use lib 't';
-use Test::More tests => 101;
+use Test::More;
use Imager qw(:all);
-$^W=1; # warnings during command-line tests
+use Imager::Test qw(is_image is_image_similar test_image test_image_16 test_image_double test_image_raw);
+
+i_has_format("tiff")
+ or plan skip_all => "no tiff support";
+
+plan tests => 215;
+
$|=1; # give us some progress in the test harness
init_log("testout/t106tiff.log",1);
my $blue=i_color_new(0,0,255,255);
my $red=i_color_new(255,0,0,255);
-my $img=Imager::ImgRaw::new(150,150,3);
-
-i_box_filled($img,70,25,130,125,$green);
-i_box_filled($img,20,25,80,125,$blue);
-i_arc($img,75,75,30,0,361,$red);
-i_conv($img,[0.1, 0.2, 0.4, 0.2, 0.1]);
-
-my $timg = Imager::ImgRaw::new(20, 20, 4);
-my $trans = i_color_new(255, 0, 0, 127);
-i_box_filled($timg, 0, 0, 20, 20, $green);
-i_box_filled($timg, 2, 2, 18, 18, $trans);
+my $img=test_image_raw();
+
+my $ver_string = Imager::i_tiff_libversion();
+ok(my ($full, $major, $minor, $point) =
+ $ver_string =~ /Version +((\d+)\.(\d+).(\d+))/,
+ "extract library version")
+ or diag("Could not extract from:\n$ver_string");
+diag("libtiff release $full") if $full;
+# make something we can compare
+my $cmp_ver = sprintf("%03d%03d%03d", $major, $minor, $point);
+if ($cmp_ver lt '003007000') {
+ diag("You have an old version of libtiff - $full, some tests will be skipped");
+}
-SKIP:
-{
- unless (i_has_format("tiff")) {
- my $im = Imager->new;
- ok(!$im->read(file=>"testimg/comp4.tif"), "should fail to read tif");
- is($im->errstr, "format 'tiff' not supported", "check no tiff message");
- $im = Imager->new(xsize=>2, ysize=>2);
- ok(!$im->write(file=>"testout/notiff.tif"), "should fail to write tiff");
- is($im->errstr, 'format not supported', "check no tiff message");
- skip("no tiff support", 97);
- }
+Imager::i_tags_add($img, "i_xres", 0, "300", 0);
+Imager::i_tags_add($img, "i_yres", 0, undef, 250);
+# resolutionunit is centimeters
+Imager::i_tags_add($img, "tiff_resolutionunit", 0, undef, 3);
+Imager::i_tags_add($img, "tiff_software", 0, "t106tiff.t", 0);
+open(FH,">testout/t106.tiff") || die "cannot open testout/t106.tiff for writing\n";
+binmode(FH);
+my $IO = Imager::io_new_fd(fileno(FH));
+ok(i_writetiff_wiol($img, $IO), "write low level")
+ or print "# ", Imager->_error_as_msg, "\n";
+close(FH);
+
+open(FH,"testout/t106.tiff") or die "cannot open testout/t106.tiff\n";
+binmode(FH);
+$IO = Imager::io_new_fd(fileno(FH));
+my $cmpimg = i_readtiff_wiol($IO, -1);
+ok($cmpimg, "read low-level");
+
+close(FH);
+
+print "# tiff average mean square pixel difference: ",sqrt(i_img_diff($img,$cmpimg))/150*150,"\n";
+
+ok(!i_img_diff($img, $cmpimg), "compare written and read image");
+
+# check the tags are ok
+my %tags = map { Imager::i_tags_get($cmpimg, $_) }
+ 0 .. Imager::i_tags_count($cmpimg) - 1;
+ok(abs($tags{i_xres} - 300) < 0.5, "i_xres in range");
+ok(abs($tags{i_yres} - 250) < 0.5, "i_yres in range");
+is($tags{tiff_resolutionunit}, 3, "tiff_resolutionunit");
+is($tags{tiff_software}, 't106tiff.t', "tiff_software");
+is($tags{tiff_photometric}, 2, "tiff_photometric"); # PHOTOMETRIC_RGB is 2
+is($tags{tiff_bitspersample}, 8, "tiff_bitspersample");
+
+$IO = Imager::io_new_bufchain();
+
+ok(Imager::i_writetiff_wiol($img, $IO), "write to buffer chain");
+my $tiffdata = Imager::io_slurp($IO);
+
+open(FH,"testout/t106.tiff");
+binmode FH;
+my $odata;
+{ local $/;
+ $odata = <FH>;
+}
- Imager::i_tags_add($img, "i_xres", 0, "300", 0);
- Imager::i_tags_add($img, "i_yres", 0, undef, 250);
- # resolutionunit is centimeters
- Imager::i_tags_add($img, "tiff_resolutionunit", 0, undef, 3);
- Imager::i_tags_add($img, "tiff_software", 0, "t106tiff.t", 0);
- open(FH,">testout/t106.tiff") || die "cannot open testout/t106.tiff for writing\n";
- binmode(FH);
- my $IO = Imager::io_new_fd(fileno(FH));
- ok(i_writetiff_wiol($img, $IO), "write low level");
- close(FH);
-
- open(FH,"testout/t106.tiff") or die "cannot open testout/t106.tiff\n";
- binmode(FH);
- $IO = Imager::io_new_fd(fileno(FH));
- my $cmpimg = i_readtiff_wiol($IO, -1);
- ok($cmpimg, "read low-level");
-
- close(FH);
-
- print "# tiff average mean square pixel difference: ",sqrt(i_img_diff($img,$cmpimg))/150*150,"\n";
-
- ok(!i_img_diff($img, $cmpimg), "compare written and read image");
-
- # check the tags are ok
- my %tags = map { Imager::i_tags_get($cmpimg, $_) }
- 0 .. Imager::i_tags_count($cmpimg) - 1;
- ok(abs($tags{i_xres} - 300) < 0.5, "i_xres in range");
- ok(abs($tags{i_yres} - 250) < 0.5, "i_yres in range");
- is($tags{tiff_resolutionunit}, 3, "tiff_resolutionunit");
- is($tags{tiff_software}, 't106tiff.t', "tiff_software");
- is($tags{tiff_photometric}, 2, "tiff_photometric"); # PHOTOMETRIC_RGB is 2
- is($tags{tiff_bitspersample}, 8, "tiff_bitspersample");
-
- $IO = Imager::io_new_bufchain();
-
- ok(Imager::i_writetiff_wiol($img, $IO), "write to buffer chain");
- my $tiffdata = Imager::io_slurp($IO);
-
- open(FH,"testout/t106.tiff");
- binmode FH;
- my $odata;
- { local $/;
- $odata = <FH>;
+is($odata, $tiffdata, "same data in file as in memory");
+
+# test Micksa's tiff writer
+# a shortish fax page
+my $faximg = Imager::ImgRaw::new(1728, 2000, 1);
+my $black = i_color_new(0,0,0,255);
+my $white = i_color_new(255,255,255,255);
+# vaguely test-patterny
+i_box_filled($faximg, 0, 0, 1728, 2000, $white);
+i_box_filled($faximg, 100,100,1628, 200, $black);
+my $width = 1;
+my $pos = 100;
+while ($width+$pos < 1628) {
+ i_box_filled($faximg, $pos, 300, $pos+$width-1, 400, $black);
+ $pos += $width + 20;
+ $width += 2;
+}
+open FH, "> testout/t106tiff_fax.tiff"
+ or die "Cannot create testout/t106tiff_fax.tiff: $!";
+binmode FH;
+$IO = Imager::io_new_fd(fileno(FH));
+ok(i_writetiff_wiol_faxable($faximg, $IO, 1), "write faxable, low level");
+close FH;
+
+# test the OO interface
+my $ooim = Imager->new;
+ok($ooim->read(file=>'testout/t106.tiff'), "read OO");
+ok($ooim->write(file=>'testout/t106_oo.tiff'), "write OO");
+
+# OO with the fax image
+my $oofim = Imager->new;
+ok($oofim->read(file=>'testout/t106tiff_fax.tiff'),
+ "read fax OO");
+
+# this should have tags set for the resolution
+%tags = map @$_, $oofim->tags;
+is($tags{i_xres}, 204, "fax i_xres");
+is($tags{i_yres}, 196, "fax i_yres");
+ok(!$tags{i_aspect_only}, "i_aspect_only");
+# resunit_inches
+is($tags{tiff_resolutionunit}, 2, "tiff_resolutionunit");
+is($tags{tiff_bitspersample}, 1, "tiff_bitspersample");
+is($tags{tiff_photometric}, 0, "tiff_photometric");
+
+ok($oofim->write(file=>'testout/t106_oo_fax.tiff', class=>'fax'),
+ "write OO, faxable");
+
+# the following should fail since there's no type and no filename
+my $oodata;
+ok(!$ooim->write(data=>\$oodata), "write with no type and no filename to guess with");
+
+# OO to data
+ok($ooim->write(data=>\$oodata, type=>'tiff'), "write to data")
+ or print "# ",$ooim->errstr, "\n";
+is($oodata, $tiffdata, "check data matches between memory and file");
+
+# make sure we can write non-fine mode
+ok($oofim->write(file=>'testout/t106_oo_faxlo.tiff', class=>'fax', fax_fine=>0), "write OO, fax standard mode");
+
+# paletted reads
+my $img4 = Imager->new;
+ok($img4->read(file=>'testimg/comp4.tif'), "reading 4-bit paletted")
+ or print "# ", $img4->errstr, "\n";
+is($img4->type, 'paletted', "image isn't paletted");
+print "# colors: ", $img4->colorcount,"\n";
+ cmp_ok($img4->colorcount, '<=', 16, "more than 16 colors!");
+#ok($img4->write(file=>'testout/t106_was4.ppm'),
+# "Cannot write img4");
+# I know I'm using BMP before it's test, but comp4.tif started life
+# as comp4.bmp
+my $bmp4 = Imager->new;
+ok($bmp4->read(file=>'testimg/comp4.bmp'), "reading 4-bit bmp!");
+my $diff = i_img_diff($img4->{IMG}, $bmp4->{IMG});
+print "# diff $diff\n";
+ok($diff == 0, "image mismatch");
+my $img4t = Imager->new;
+ok($img4t->read(file => 'testimg/comp4t.tif'), "read 4-bit paletted, tiled")
+ or print "# ", $img4t->errstr, "\n";
+is_image($bmp4, $img4t, "check tiled version matches");
+my $img8 = Imager->new;
+ok($img8->read(file=>'testimg/comp8.tif'), "reading 8-bit paletted");
+is($img8->type, 'paletted', "image isn't paletted");
+print "# colors: ", $img8->colorcount,"\n";
+#ok($img8->write(file=>'testout/t106_was8.ppm'),
+# "Cannot write img8");
+ok($img8->colorcount == 256, "more colors than expected");
+my $bmp8 = Imager->new;
+ok($bmp8->read(file=>'testimg/comp8.bmp'), "reading 8-bit bmp!");
+$diff = i_img_diff($img8->{IMG}, $bmp8->{IMG});
+print "# diff $diff\n";
+ok($diff == 0, "image mismatch");
+my $bad = Imager->new;
+ok($bad->read(file=>'testimg/comp4bad.tif',
+ allow_incomplete=>1), "bad image not returned");
+ok(scalar $bad->tags(name=>'i_incomplete'), "incomplete tag not set");
+ok($img8->write(file=>'testout/t106_pal8.tif'), "writing 8-bit paletted");
+my $cmp8 = Imager->new;
+ok($cmp8->read(file=>'testout/t106_pal8.tif'),
+ "reading 8-bit paletted");
+#print "# ",$cmp8->errstr,"\n";
+is($cmp8->type, 'paletted', "pal8 isn't paletted");
+is($cmp8->colorcount, 256, "pal8 bad colorcount");
+$diff = i_img_diff($img8->{IMG}, $cmp8->{IMG});
+print "# diff $diff\n";
+ok($diff == 0, "written image doesn't match read");
+ok($img4->write(file=>'testout/t106_pal4.tif'), "writing 4-bit paletted");
+ok(my $cmp4 = Imager->new->read(file=>'testout/t106_pal4.tif'),
+ "reading 4-bit paletted");
+is($cmp4->type, 'paletted', "pal4 isn't paletted");
+is($cmp4->colorcount, 16, "pal4 bad colorcount");
+$diff = i_img_diff($img4->{IMG}, $cmp4->{IMG});
+print "# diff $diff\n";
+ok($diff == 0, "written image doesn't match read");
+
+my $work;
+my $seekpos;
+sub io_writer {
+ my ($what) = @_;
+ if ($seekpos > length $work) {
+ $work .= "\0" x ($seekpos - length $work);
}
+ substr($work, $seekpos, length $what) = $what;
+ $seekpos += length $what;
- is($odata, $tiffdata, "same data in file as in memory");
-
- # test Micksa's tiff writer
- # a shortish fax page
- my $faximg = Imager::ImgRaw::new(1728, 2000, 1);
- my $black = i_color_new(0,0,0,255);
- my $white = i_color_new(255,255,255,255);
- # vaguely test-patterny
- i_box_filled($faximg, 0, 0, 1728, 2000, $white);
- i_box_filled($faximg, 100,100,1628, 200, $black);
- my $width = 1;
- my $pos = 100;
- while ($width+$pos < 1628) {
- i_box_filled($faximg, $pos, 300, $pos+$width-1, 400, $black);
- $pos += $width + 20;
- $width += 2;
- }
- open FH, "> testout/t106tiff_fax.tiff"
- or die "Cannot create testout/t106tiff_fax.tiff: $!";
- binmode FH;
- $IO = Imager::io_new_fd(fileno(FH));
- ok(i_writetiff_wiol_faxable($faximg, $IO, 1), "write faxable, low level");
- close FH;
-
- # test the OO interface
- my $ooim = Imager->new;
- ok($ooim->read(file=>'testout/t106.tiff'), "read OO");
- ok($ooim->write(file=>'testout/t106_oo.tiff'), "write OO");
-
- # OO with the fax image
- my $oofim = Imager->new;
- ok($oofim->read(file=>'testout/t106tiff_fax.tiff'),
- "read fax OO");
-
- # this should have tags set for the resolution
- %tags = map @$_, $oofim->tags;
- is($tags{i_xres}, 204, "fax i_xres");
- is($tags{i_yres}, 196, "fax i_yres");
- ok(!$tags{i_aspect_only}, "i_aspect_only");
- # resunit_inches
- is($tags{tiff_resolutionunit}, 2, "tiff_resolutionunit");
- is($tags{tiff_bitspersample}, 1, "tiff_bitspersample");
- is($tags{tiff_photometric}, 0, "tiff_photometric");
-
- ok($oofim->write(file=>'testout/t106_oo_fax.tiff', class=>'fax'),
- "write OO, faxable");
-
- # the following should fail since there's no type and no filename
- my $oodata;
- ok(!$ooim->write(data=>\$oodata), "write with no type and no filename to guess with");
-
- # OO to data
- ok($ooim->write(data=>\$oodata, type=>'tiff'), "write to data")
- or print "# ",$ooim->errstr, "\n";
- is($oodata, $tiffdata, "check data matches between memory and file");
-
- # make sure we can write non-fine mode
- ok($oofim->write(file=>'testout/t106_oo_faxlo.tiff', class=>'fax', fax_fine=>0), "write OO, fax standard mode");
-
- # paletted reads
- my $img4 = Imager->new;
- ok($img4->read(file=>'testimg/comp4.tif'), "reading 4-bit paletted");
- ok($img4->type eq 'paletted', "image isn't paletted");
- print "# colors: ", $img4->colorcount,"\n";
- ok($img4->colorcount <= 16, "more than 16 colors!");
- #ok($img4->write(file=>'testout/t106_was4.ppm'),
- # "Cannot write img4");
- # I know I'm using BMP before it's test, but comp4.tif started life
- # as comp4.bmp
- my $bmp4 = Imager->new;
- ok($bmp4->read(file=>'testimg/comp4.bmp'), "reading 4-bit bmp!");
- my $diff = i_img_diff($img4->{IMG}, $bmp4->{IMG});
- print "# diff $diff\n";
- ok($diff == 0, "image mismatch");
- my $img8 = Imager->new;
- ok($img8->read(file=>'testimg/comp8.tif'), "reading 8-bit paletted");
- ok($img8->type eq 'paletted', "image isn't paletted");
- print "# colors: ", $img8->colorcount,"\n";
- #ok($img8->write(file=>'testout/t106_was8.ppm'),
- # "Cannot write img8");
- ok($img8->colorcount == 256, "more colors than expected");
- my $bmp8 = Imager->new;
- ok($bmp8->read(file=>'testimg/comp8.bmp'), "reading 8-bit bmp!");
- $diff = i_img_diff($img8->{IMG}, $bmp8->{IMG});
- print "# diff $diff\n";
- ok($diff == 0, "image mismatch");
- my $bad = Imager->new;
- ok($bad->read(file=>'testimg/comp4bad.tif'), "bad image not returned");
- ok(scalar $bad->tags(name=>'i_incomplete'), "incomplete tag not set");
- ok($img8->write(file=>'testout/t106_pal8.tif'), "writing 8-bit paletted");
- my $cmp8 = Imager->new;
- ok($cmp8->read(file=>'testout/t106_pal8.tif'),
- "reading 8-bit paletted");
- #print "# ",$cmp8->errstr,"\n";
- ok($cmp8->type eq 'paletted', "pal8 isn't paletted");
- ok($cmp8->colorcount == 256, "pal8 bad colorcount");
- $diff = i_img_diff($img8->{IMG}, $cmp8->{IMG});
- print "# diff $diff\n";
- ok($diff == 0, "written image doesn't match read");
- ok($img4->write(file=>'testout/t106_pal4.tif'), "writing 4-bit paletted");
- ok(my $cmp4 = Imager->new->read(file=>'testout/t106_pal4.tif'),
- "reading 4-bit paletted");
- ok($cmp4->type eq 'paletted', "pal4 isn't paletted");
- ok($cmp4->colorcount == 16, "pal4 bad colorcount");
- $diff = i_img_diff($img4->{IMG}, $cmp4->{IMG});
- print "# diff $diff\n";
- ok($diff == 0, "written image doesn't match read");
-
- my $work;
- my $seekpos;
- sub io_writer {
- my ($what) = @_;
- if ($seekpos > length $work) {
- $work .= "\0" x ($seekpos - length $work);
- }
- substr($work, $seekpos, length $what) = $what;
- $seekpos += length $what;
-
- 1;
+ 1;
+}
+sub io_reader {
+ my ($size, $maxread) = @_;
+ #print "io_reader($size, $maxread) pos $seekpos\n";
+ my $out = substr($work, $seekpos, $maxread);
+ $seekpos += length $out;
+ $out;
+}
+sub io_reader2 {
+ my ($size, $maxread) = @_;
+ #print "io_reader2($size, $maxread) pos $seekpos\n";
+ my $out = substr($work, $seekpos, $size);
+ $seekpos += length $out;
+ $out;
+}
+use IO::Seekable;
+sub io_seeker {
+ my ($offset, $whence) = @_;
+ #print "io_seeker($offset, $whence)\n";
+ if ($whence == SEEK_SET) {
+ $seekpos = $offset;
}
- sub io_reader {
- my ($size, $maxread) = @_;
- #print "io_reader($size, $maxread) pos $seekpos\n";
- my $out = substr($work, $seekpos, $maxread);
- $seekpos += length $out;
- $out;
+ elsif ($whence == SEEK_CUR) {
+ $seekpos += $offset;
}
- sub io_reader2 {
- my ($size, $maxread) = @_;
- #print "io_reader2($size, $maxread) pos $seekpos\n";
- my $out = substr($work, $seekpos, $size);
- $seekpos += length $out;
- $out;
+ else { # SEEK_END
+ $seekpos = length($work) + $offset;
}
- use IO::Seekable;
- sub io_seeker {
- my ($offset, $whence) = @_;
- #print "io_seeker($offset, $whence)\n";
- if ($whence == SEEK_SET) {
- $seekpos = $offset;
- }
- elsif ($whence == SEEK_CUR) {
- $seekpos += $offset;
- }
- else { # SEEK_END
- $seekpos = length($work) + $offset;
+ #print "-> $seekpos\n";
+ $seekpos;
+}
+my $did_close;
+sub io_closer {
+ ++$did_close;
+}
+
+# read via cb
+$work = $tiffdata;
+$seekpos = 0;
+my $IO2 = Imager::io_new_cb(undef, \&io_reader, \&io_seeker, undef);
+ok($IO2, "new readcb obj");
+my $img5 = i_readtiff_wiol($IO2, -1);
+ok($img5, "read via cb");
+ok(i_img_diff($img5, $img) == 0, "read from cb diff");
+
+# read via cb2
+$work = $tiffdata;
+$seekpos = 0;
+my $IO3 = Imager::io_new_cb(undef, \&io_reader2, \&io_seeker, undef);
+ok($IO3, "new readcb2 obj");
+my $img6 = i_readtiff_wiol($IO3, -1);
+ok($img6, "read via cb2");
+ok(i_img_diff($img6, $img) == 0, "read from cb2 diff");
+
+# write via cb
+$work = '';
+$seekpos = 0;
+my $IO4 = Imager::io_new_cb(\&io_writer, \&io_reader, \&io_seeker,
+ \&io_closer);
+ok($IO4, "new writecb obj");
+ok(i_writetiff_wiol($img, $IO4), "write to cb");
+is($work, $odata, "write cb match");
+ok($did_close, "write cb did close");
+open D1, ">testout/d1.tiff" or die;
+print D1 $work;
+close D1;
+open D2, ">testout/d2.tiff" or die;
+print D2 $tiffdata;
+close D2;
+
+# write via cb2
+$work = '';
+$seekpos = 0;
+$did_close = 0;
+my $IO5 = Imager::io_new_cb(\&io_writer, \&io_reader, \&io_seeker,
+ \&io_closer, 1);
+ok($IO5, "new writecb obj 2");
+ok(i_writetiff_wiol($img, $IO5), "write to cb2");
+is($work, $odata, "write cb2 match");
+ok($did_close, "write cb2 did close");
+
+open D3, ">testout/d3.tiff" or die;
+print D3 $work;
+close D3;
+
+# multi-image write/read
+my @imgs;
+push(@imgs, map $ooim->copy(), 1..3);
+for my $i (0..$#imgs) {
+ $imgs[$i]->addtag(name=>"tiff_pagename", value=>"Page ".($i+1));
+}
+my $rc = Imager->write_multi({file=>'testout/t106_multi.tif'}, @imgs);
+ok($rc, "writing multiple images to tiff");
+my @out = Imager->read_multi(file=>'testout/t106_multi.tif');
+ok(@out == @imgs, "reading multiple images from tiff");
+@out == @imgs or print "# ",scalar @out, " ",Imager->errstr,"\n";
+for my $i (0..$#imgs) {
+ ok(i_img_diff($imgs[$i]{IMG}, $out[$i]{IMG}) == 0,
+ "comparing image $i");
+ my ($tag) = $out[$i]->tags(name=>'tiff_pagename');
+ is($tag, "Page ".($i+1),
+ "tag doesn't match original image");
+}
+
+# writing even more images to tiff - we weren't handling more than five
+# correctly on read
+@imgs = map $ooim->copy(), 1..40;
+$rc = Imager->write_multi({file=>'testout/t106_multi2.tif'}, @imgs);
+ok($rc, "writing 40 images to tiff");
+@out = Imager->read_multi(file=>'testout/t106_multi2.tif');
+ok(@imgs == @out, "reading 40 images from tiff");
+# force some allocation activity - helps crash here if it's the problem
+@out = @imgs = ();
+
+# multi-image fax files
+ok(Imager->write_multi({file=>'testout/t106_faxmulti.tiff', class=>'fax'},
+ $oofim, $oofim), "write multi fax image");
+@imgs = Imager->read_multi(file=>'testout/t106_faxmulti.tiff');
+ok(@imgs == 2, "reading multipage fax");
+ok(Imager::i_img_diff($imgs[0]{IMG}, $oofim->{IMG}) == 0,
+ "compare first fax image");
+ok(Imager::i_img_diff($imgs[1]{IMG}, $oofim->{IMG}) == 0,
+ "compare second fax image");
+
+my ($format) = $imgs[0]->tags(name=>'i_format');
+is($format, 'tiff', "check i_format tag");
+
+my $unit = $imgs[0]->tags(name=>'tiff_resolutionunit');
+ok(defined $unit && $unit == 2, "check tiff_resolutionunit tag");
+my $unitname = $imgs[0]->tags(name=>'tiff_resolutionunit_name');
+is($unitname, 'inch', "check tiff_resolutionunit_name tag");
+
+my $warned = Imager->new;
+ok($warned->read(file=>"testimg/tiffwarn.tif"), "read tiffwarn.tif");
+my ($warning) = $warned->tags(name=>'i_warning');
+ok(defined $warning && $warning =~ /unknown field with tag 28712/,
+ "check that warning tag set and correct");
+
+{ # support for reading a given page
+ # first build a simple test image
+ my $im1 = Imager->new(xsize=>50, ysize=>50);
+ $im1->box(filled=>1, color=>$blue);
+ $im1->addtag(name=>'tiff_pagename', value => "Page One");
+ my $im2 = Imager->new(xsize=>60, ysize=>60);
+ $im2->box(filled=>1, color=>$green);
+ $im2->addtag(name=>'tiff_pagename', value=>"Page Two");
+
+ # read second page
+ my $page_file = 'testout/t106_pages.tif';
+ ok(Imager->write_multi({ file=> $page_file}, $im1, $im2),
+ "build simple multiimage for page tests");
+ my $imwork = Imager->new;
+ ok($imwork->read(file=>$page_file, page=>1),
+ "read second page");
+ is($im2->getwidth, $imwork->getwidth, "check width");
+ is($im2->getwidth, $imwork->getheight, "check height");
+ is(i_img_diff($imwork->{IMG}, $im2->{IMG}), 0,
+ "check image content");
+ my ($page_name) = $imwork->tags(name=>'tiff_pagename');
+ is($page_name, 'Page Two', "check tag we set");
+
+ # try an out of range page
+ ok(!$imwork->read(file=>$page_file, page=>2),
+ "check out of range page");
+ is($imwork->errstr, "could not switch to page 2", "check message");
+}
+
+{ # test writing returns an error message correctly
+ # open a file read only and try to write to it
+ open TIFF, "> testout/t106_empty.tif" or die;
+ close TIFF;
+ open TIFF, "< testout/t106_empty.tif"
+ or skip "Cannot open testout/t106_empty.tif for reading", 8;
+ binmode TIFF;
+ my $im = Imager->new(xsize=>100, ysize=>100);
+ ok(!$im->write(fh => \*TIFF, type=>'tiff'),
+ "fail to write to read only handle");
+ cmp_ok($im->errstr, '=~', 'Could not create TIFF object: Error writing TIFF header: write\(\)',
+ "check error message");
+ ok(!Imager->write_multi({ type => 'tiff', fh => \*TIFF }, $im),
+ "fail to write multi to read only handle");
+ cmp_ok(Imager->errstr, '=~', 'Could not create TIFF object: Error writing TIFF header: write\(\)',
+ "check error message");
+ ok(!$im->write(fh => \*TIFF, type=>'tiff', class=>'fax'),
+ "fail to write to read only handle (fax)");
+ cmp_ok($im->errstr, '=~', 'Could not create TIFF object: Error writing TIFF header: write\(\)',
+ "check error message");
+ ok(!Imager->write_multi({ type => 'tiff', fh => \*TIFF, class=>'fax' }, $im),
+ "fail to write multi to read only handle (fax)");
+ cmp_ok(Imager->errstr, '=~', 'Could not create TIFF object: Error writing TIFF header: write\(\)',
+ "check error message");
+}
+
+{ # test reading returns an error correctly - use test script as an
+ # invalid TIFF file
+ my $im = Imager->new;
+ ok(!$im->read(file=>'t/t106tiff.t', type=>'tiff'),
+ "fail to read script as image");
+ # we get different magic number values depending on the platform
+ # byte ordering
+ cmp_ok($im->errstr, '=~',
+ "Error opening file: Not a TIFF (?:or MDI )?file, bad magic number (8483 \\(0x2123\\)|8993 \\(0x2321\\))",
+ "check error message");
+ my @ims = Imager->read_multi(file =>'t/t106tiff.t', type=>'tiff');
+ ok(!@ims, "fail to read_multi script as image");
+ cmp_ok($im->errstr, '=~',
+ "Error opening file: Not a TIFF (?:or MDI )?file, bad magic number (8483 \\(0x2123\\)|8993 \\(0x2321\\))",
+ "check error message");
+}
+
+{ # write_multi to data
+ my $data;
+ my $im = Imager->new(xsize => 50, ysize => 50);
+ ok(Imager->write_multi({ data => \$data, type=>'tiff' }, $im, $im),
+ "write multi to in memory");
+ ok(length $data, "make sure something written");
+ my @im = Imager->read_multi(data => $data);
+ is(@im, 2, "make sure we can read it back");
+ is(Imager::i_img_diff($im[0]{IMG}, $im->{IMG}), 0,
+ "check first image");
+ is(Imager::i_img_diff($im[1]{IMG}, $im->{IMG}), 0,
+ "check second image");
+}
+
+{ # handling of an alpha channel for various images
+ my $photo_rgb = 2;
+ my $photo_cmyk = 5;
+ my $photo_cielab = 8;
+ my @alpha_images =
+ (
+ [ 'srgb.tif', 3, $photo_rgb, '003005005' ],
+ [ 'srgba.tif', 4, $photo_rgb, '003005005' ],
+ [ 'srgbaa.tif', 4, $photo_rgb, '003005005' ],
+ [ 'scmyk.tif', 3, $photo_cmyk, '003005005' ],
+ [ 'scmyka.tif', 4, $photo_cmyk, '003005005' ],
+ [ 'scmykaa.tif', 4, $photo_cmyk, '003005005' ],
+ [ 'slab.tif', 3, $photo_cielab, '003006001' ],
+ );
+
+ for my $test (@alpha_images) {
+ my ($input, $channels, $photo, $need_ver) = @$test;
+
+ SKIP: {
+ my $skipped = $channels == 4 ? 4 : 3;
+ $need_ver le $cmp_ver
+ or skip("Your ancient tifflib is buggy/limited for this test", $skipped);
+ my $im = Imager->new;
+ ok($im->read(file => "testimg/$input"),
+ "read alpha test $input")
+ or print "# ", $im->errstr, "\n";
+ is($im->getchannels, $channels, "channels for $input match");
+ is($im->tags(name=>'tiff_photometric'), $photo,
+ "photometric for $input match");
+ $channels == 4
+ or next;
+ my $c = $im->getpixel(x => 0, 'y' => 7);
+ is(($c->rgba)[3], 0, "bottom row should have 0 alpha");
}
- #print "-> $seekpos\n";
- $seekpos;
- }
- my $did_close;
- sub io_closer {
- ++$did_close;
}
+}
- # read via cb
- $work = $tiffdata;
- $seekpos = 0;
- my $IO2 = Imager::io_new_cb(undef, \&io_reader, \&io_seeker, undef);
- ok($IO2, "new readcb obj");
- my $img5 = i_readtiff_wiol($IO2, -1);
- ok($img5, "read via cb");
- ok(i_img_diff($img5, $img) == 0, "read from cb diff");
-
- # read via cb2
- $work = $tiffdata;
- $seekpos = 0;
- my $IO3 = Imager::io_new_cb(undef, \&io_reader2, \&io_seeker, undef);
- ok($IO3, "new readcb2 obj");
- my $img6 = i_readtiff_wiol($IO3, -1);
- ok($img6, "read via cb2");
- ok(i_img_diff($img6, $img) == 0, "read from cb2 diff");
-
- # write via cb
- $work = '';
- $seekpos = 0;
- my $IO4 = Imager::io_new_cb(\&io_writer, \&io_reader, \&io_seeker,
- \&io_closer);
- ok($IO4, "new writecb obj");
- ok(i_writetiff_wiol($img, $IO4), "write to cb");
- ok($work eq $odata, "write cb match");
- ok($did_close, "write cb did close");
- open D1, ">testout/d1.tiff" or die;
- print D1 $work;
- close D1;
- open D2, ">testout/d2.tiff" or die;
- print D2 $tiffdata;
- close D2;
-
- # write via cb2
- $work = '';
- $seekpos = 0;
- $did_close = 0;
- my $IO5 = Imager::io_new_cb(\&io_writer, \&io_reader, \&io_seeker,
- \&io_closer, 1);
- ok($IO5, "new writecb obj 2");
- ok(i_writetiff_wiol($img, $IO5), "write to cb2");
- ok($work eq $odata, "write cb2 match");
- ok($did_close, "write cb2 did close");
-
- open D3, ">testout/d3.tiff" or die;
- print D3 $work;
- close D3;
-
- # multi-image write/read
- my @imgs;
- push(@imgs, map $ooim->copy(), 1..3);
- for my $i (0..$#imgs) {
- $imgs[$i]->addtag(name=>"tiff_pagename", value=>"Page ".($i+1));
- }
- my $rc = Imager->write_multi({file=>'testout/t106_multi.tif'}, @imgs);
- ok($rc, "writing multiple images to tiff");
- my @out = Imager->read_multi(file=>'testout/t106_multi.tif');
- ok(@out == @imgs, "reading multiple images from tiff");
- @out == @imgs or print "# ",scalar @out, " ",Imager->errstr,"\n";
- for my $i (0..$#imgs) {
- ok(i_img_diff($imgs[$i]{IMG}, $out[$i]{IMG}) == 0,
- "comparing image $i");
- my ($tag) = $out[$i]->tags(name=>'tiff_pagename');
- ok($tag eq "Page ".($i+1),
- "tag doesn't match original image");
- }
+{
+ ok(grep($_ eq 'tiff', Imager->read_types), "check tiff in read types");
+ ok(grep($_ eq 'tiff', Imager->write_types), "check tiff in write types");
+}
- # writing even more images to tiff - we weren't handling more than five
- # correctly on read
- @imgs = map $ooim->copy(), 1..40;
- $rc = Imager->write_multi({file=>'testout/t106_multi2.tif'}, @imgs);
- ok($rc, "writing 40 images to tiff");
- @out = Imager->read_multi(file=>'testout/t106_multi2.tif');
- ok(@imgs == @out, "reading 40 images from tiff");
- # force some allocation activity - helps crash here if it's the problem
- @out = @imgs = ();
-
- # multi-image fax files
- ok(Imager->write_multi({file=>'testout/t106_faxmulti.tiff', class=>'fax'},
- $oofim, $oofim), "write multi fax image");
- @imgs = Imager->read_multi(file=>'testout/t106_faxmulti.tiff');
- ok(@imgs == 2, "reading multipage fax");
- ok(Imager::i_img_diff($imgs[0]{IMG}, $oofim->{IMG}) == 0,
- "compare first fax image");
- ok(Imager::i_img_diff($imgs[1]{IMG}, $oofim->{IMG}) == 0,
- "compare second fax image");
-
- my ($format) = $imgs[0]->tags(name=>'i_format');
- ok(defined $format && $format eq 'tiff', "check i_format tag");
-
- my $unit = $imgs[0]->tags(name=>'tiff_resolutionunit');
- ok(defined $unit && $unit == 2, "check tiff_resolutionunit tag");
- my $unitname = $imgs[0]->tags(name=>'tiff_resolutionunit_name');
- ok(defined $unitname && $unitname eq 'inch',
- "check tiff_resolutionunit_name tag");
-
- my $warned = Imager->new;
- ok($warned->read(file=>"testimg/tiffwarn.tif"), "read tiffwarn.tif");
- my ($warning) = $warned->tags(name=>'i_warning');
- ok(defined $warning && $warning =~ /unknown field with tag 28712/,
- "check that warning tag set and correct");
-
- { # support for reading a given page
- # first build a simple test image
- my $im1 = Imager->new(xsize=>50, ysize=>50);
- $im1->box(filled=>1, color=>$blue);
- $im1->addtag(name=>'tiff_pagename', value => "Page One");
- my $im2 = Imager->new(xsize=>60, ysize=>60);
- $im2->box(filled=>1, color=>$green);
- $im2->addtag(name=>'tiff_pagename', value=>"Page Two");
-
- # read second page
- my $page_file = 'testout/t106_pages.tif';
- ok(Imager->write_multi({ file=> $page_file}, $im1, $im2),
- "build simple multiimage for page tests");
- my $imwork = Imager->new;
- ok($imwork->read(file=>$page_file, page=>1),
- "read second page");
- is($im2->getwidth, $imwork->getwidth, "check width");
- is($im2->getwidth, $imwork->getheight, "check height");
- is(i_img_diff($imwork->{IMG}, $im2->{IMG}), 0,
- "check image content");
- my ($page_name) = $imwork->tags(name=>'tiff_pagename');
- is($page_name, 'Page Two', "check tag we set");
-
- # try an out of range page
- ok(!$imwork->read(file=>$page_file, page=>2),
- "check out of range page");
- is($imwork->errstr, "could not switch to page 2", "check message");
- }
+{ # reading tile based images
+ my $im = Imager->new;
+ ok($im->read(file => 'testimg/pengtile.tif'), "read tiled image")
+ or print "# ", $im->errstr, "\n";
+ # compare it
+ my $comp = Imager->new;
+ ok($comp->read(file => 'testimg/penguin-base.ppm'), 'read comparison image');
+ is_image($im, $comp, 'compare them');
+}
+
+SKIP:
+{ # failing to read tile based images
+ # we grab our tiled image and patch a tile offset to nowhere
+ ok(open(TIFF, '< testimg/pengtile.tif'), 'open pengtile.tif')
+ or skip 'cannot open testimg/pengtile.tif', 4;
+
+ $cmp_ver ge '003005007'
+ or skip("Your ancient tifflib has bad error handling", 4);
+ binmode TIFF;
+ my $data = do { local $/; <TIFF>; };
+
+ # patch a tile offset
+ substr($data, 0x1AFA0, 4) = pack("H*", "00000200");
+
+ #open PIPE, "| bytedump -a | less" or die;
+ #print PIPE $data;
+ #close PIPE;
+
+ my $allow = Imager->new;
+ ok($allow->read(data => $data, allow_incomplete => 1),
+ "read incomplete tiled");
+ ok($allow->tags(name => 'i_incomplete'), 'i_incomplete set');
+ is($allow->tags(name => 'i_lines_read'), 173,
+ 'check i_lines_read set appropriately');
+
+ my $fail = Imager->new;
+ ok(!$fail->read(data => $data), "read fail tiled");
+}
+
+{ # read 16-bit/sample
+ my $im16 = Imager->new;
+ ok($im16->read(file => 'testimg/rgb16.tif'), "read 16-bit rgb");
+ is($im16->bits, 16, 'got a 16-bit image');
+ my $im16t = Imager->new;
+ ok($im16t->read(file => 'testimg/rgb16t.tif'), "read 16-bit rgb tiled");
+ is($im16t->bits, 16, 'got a 16-bit image');
+ is_image($im16, $im16t, 'check they match');
+
+ my $grey16 = Imager->new;
+ ok($grey16->read(file => 'testimg/grey16.tif'), "read 16-bit grey")
+ or print "# ", $grey16->errstr, "\n";
+ is($grey16->bits, 16, 'got a 16-bit image');
+ is($grey16->getchannels, 1, 'and its grey');
+ my $comp16 = $im16->convert(matrix => [ [ 0.299, 0.587, 0.114 ] ]);
+ is_image($grey16, $comp16, 'compare grey to converted');
+
+ my $grey32 = Imager->new;
+ ok($grey32->read(file => 'testimg/grey32.tif'), "read 32-bit grey")
+ or print "# ", $grey32->errstr, "\n";
+ is($grey32->bits, 'double', 'got a double image');
+ is($grey32->getchannels, 2, 'and its grey + alpha');
+ is($grey32->tags(name => 'tiff_bitspersample'), 32,
+ "check bits per sample");
+ my $base = test_image_double->convert(preset =>'grey')
+ ->convert(preset => 'addalpha');
+ is_image($grey32, $base, 'compare to original');
+}
- { # test writing returns an error message correctly
- # open a file read only and try to write to it
- open TIFF, "> testout/t106_empty.tif" or die;
- close TIFF;
- open TIFF, "< testout/t106_empty.tif"
- or skip "Cannot open testout/t106_empty.tif for reading", 8;
- binmode TIFF;
- my $im = Imager->new(xsize=>100, ysize=>100);
- ok(!$im->write(fh => \*TIFF, type=>'tiff'),
- "fail to write to read only handle");
- cmp_ok($im->errstr, '=~', 'Could not create TIFF object: Error writing TIFF header: write\(\)',
- "check error message");
- ok(!Imager->write_multi({ type => 'tiff', fh => \*TIFF }, $im),
- "fail to write multi to read only handle");
- cmp_ok(Imager->errstr, '=~', 'Could not create TIFF object: Error writing TIFF header: write\(\)',
- "check error message");
- ok(!$im->write(fh => \*TIFF, type=>'tiff', class=>'fax'),
- "fail to write to read only handle (fax)");
- cmp_ok($im->errstr, '=~', 'Could not create TIFF object: Error writing TIFF header: write\(\)',
- "check error message");
- ok(!Imager->write_multi({ type => 'tiff', fh => \*TIFF, class=>'fax' }, $im),
- "fail to write multi to read only handle (fax)");
- cmp_ok(Imager->errstr, '=~', 'Could not create TIFF object: Error writing TIFF header: write\(\)',
- "check error message");
+{ # read 16, 32-bit/sample and compare to the original
+ my $rgba = Imager->new;
+ ok($rgba->read(file => 'testimg/srgba.tif'),
+ "read base rgba image");
+ my $rgba16 = Imager->new;
+ ok($rgba16->read(file => 'testimg/srgba16.tif'),
+ "read 16-bit/sample rgba image");
+ is_image($rgba, $rgba16, "check they match");
+ is($rgba16->bits, 16, 'check we got the right type');
+
+ my $rgba32 = Imager->new;
+ ok($rgba32->read(file => 'testimg/srgba32.tif'),
+ "read 32-bit/sample rgba image");
+ is_image($rgba, $rgba32, "check they match");
+ is($rgba32->bits, 'double', 'check we got the right type');
+
+ my $cmyka16 = Imager->new;
+ ok($cmyka16->read(file => 'testimg/scmyka16.tif'),
+ "read cmyk 16-bit")
+ or print "# ", $cmyka16->errstr, "\n";
+ is($cmyka16->bits, 16, "check we got the right type");
+ is_image_similar($rgba, $cmyka16, 10, "check image data");
+
+ # tiled, non-contig, should fallback to RGBA code
+ my $rgbatsep = Imager->new;
+ ok($rgbatsep->read(file => 'testimg/rgbatsep.tif'),
+ "read tiled, separated rgba image")
+ or diag($rgbatsep->errstr);
+ is_image($rgba, $rgbatsep, "check they match");
+}
+{ # read bi-level
+ my $pbm = Imager->new;
+ ok($pbm->read(file => 'testimg/imager.pbm'), "read original pbm");
+ my $tif = Imager->new;
+ ok($tif->read(file => 'testimg/imager.tif'), "read mono tif");
+ is_image($pbm, $tif, "compare them");
+ is($tif->type, 'paletted', 'check image type');
+ is($tif->colorcount, 2, 'check we got a "mono" image');
+}
+
+{ # check alpha channels scaled correctly for fallback handler
+ my $im = Imager->new;
+ ok($im->read(file=>'testimg/alpha.tif'), 'read alpha check image');
+ my @colors =
+ (
+ [ 0, 0, 0 ],
+ [ 255, 255, 255 ],
+ [ 127, 0, 127 ],
+ [ 127, 127, 0 ],
+ );
+ my @alphas = ( 255, 191, 127, 63 );
+ my $ok = 1;
+ my $msg = 'alpha check ok';
+ CHECKER:
+ for my $y (0 .. 3) {
+ for my $x (0 .. 3) {
+ my $c = $im->getpixel(x => $x, 'y' => $y);
+ my @c = $c->rgba;
+ my $alpha = pop @c;
+ if ($alpha != $alphas[$y]) {
+ $ok = 0;
+ $msg = "($x,$y) alpha mismatch $alpha vs $alphas[$y]";
+ last CHECKER;
+ }
+ my $expect = $colors[$x];
+ for my $ch (0 .. 2) {
+ if (abs($expect->[$ch]-$c[$ch]) > 3) {
+ $ok = 0;
+ $msg = "($x,$y)[$ch] color mismatch got $c[$ch] vs expected $expect->[$ch]";
+ last CHECKER;
+ }
+ }
+ }
}
+ ok($ok, $msg);
+}
- { # test reading returns an error correctly - use test script as an
- # invalid TIFF file
- my $im = Imager->new;
- ok(!$im->read(file=>'t/t106tiff.t', type=>'tiff'),
- "fail to read script as image");
- # we get different magic number values depending on the platform
- # byte ordering
- cmp_ok($im->errstr, '=~',
- "Error opening file: Not a TIFF file, bad magic number (8483 \\(0x2123\\)|8993 \\(0x2321\\))",
- "check error message");
- my @ims = Imager->read_multi(file =>'t/t106tiff.t', type=>'tiff');
- ok(!@ims, "fail to read_multi script as image");
- cmp_ok($im->errstr, '=~',
- "Error opening file: Not a TIFF file, bad magic number (8483 \\(0x2123\\)|8993 \\(0x2321\\))",
- "check error message");
+{ # check alpha channels scaled correctly for greyscale
+ my $im = Imager->new;
+ ok($im->read(file=>'testimg/gralpha.tif'), 'read alpha check grey image');
+ my @greys = ( 0, 255, 52, 112 );
+ my @alphas = ( 255, 191, 127, 63 );
+ my $ok = 1;
+ my $msg = 'alpha check ok';
+ CHECKER:
+ for my $y (0 .. 3) {
+ for my $x (0 .. 3) {
+ my $c = $im->getpixel(x => $x, 'y' => $y);
+ my ($grey, $alpha) = $c->rgba;
+ if ($alpha != $alphas[$y]) {
+ $ok = 0;
+ $msg = "($x,$y) alpha mismatch $alpha vs $alphas[$y]";
+ last CHECKER;
+ }
+ if (abs($greys[$x] - $grey) > 3) {
+ $ok = 0;
+ $msg = "($x,$y) grey mismatch $grey vs $greys[$x]";
+ last CHECKER;
+ }
+ }
}
+ ok($ok, $msg);
}
+
+{ # 16-bit writes
+ my $orig = test_image_16();
+ my $data;
+ ok($orig->write(data => \$data, type => 'tiff',
+ tiff_compression => 'none'), "write 16-bit/sample");
+ my $im = Imager->new;
+ ok($im->read(data => $data), "read it back");
+ is_image($im, $orig, "check read data matches");
+ is($im->tags(name => 'tiff_bitspersample'), 16, "correct bits");
+ is($im->bits, 16, 'check image bits');
+ is($im->tags(name => 'tiff_photometric'), 2, "correct photometric");
+ is($im->tags(name => 'tiff_compression'), 'none', "no compression");
+ is($im->getchannels, 3, 'correct channels');
+}
+
+{ # 8-bit writes
+ # and check compression
+ my $compress = Imager::i_tiff_has_compression('lzw') ? 'lzw' : 'packbits';
+ my $orig = test_image()->convert(preset=>'grey')
+ ->convert(preset => 'addalpha');
+ my $data;
+ ok($orig->write(data => \$data, type => 'tiff',
+ tiff_compression=> $compress),
+ "write 8 bit")
+ or print "# ", $orig->errstr, "\n";
+ my $im = Imager->new;
+ ok($im->read(data => $data), "read it back");
+ is_image($im, $orig, "check read data matches");
+ is($im->tags(name => 'tiff_bitspersample'), 8, 'correct bits');
+ is($im->bits, 8, 'check image bits');
+ is($im->tags(name => 'tiff_photometric'), 1, 'correct photometric');
+ is($im->tags(name => 'tiff_compression'), $compress,
+ "$compress compression");
+ is($im->getchannels, 2, 'correct channels');
+}
+
+{ # double writes
+ my $orig = test_image_double()->convert(preset=>'addalpha');
+ my $data;
+ ok($orig->write(data => \$data, type => 'tiff',
+ tiff_compression => 'none'),
+ "write 32-bit/sample from double")
+ or print "# ", $orig->errstr, "\n";
+ my $im = Imager->new;
+ ok($im->read(data => $data), "read it back");
+ is_image($im, $orig, "check read data matches");
+ is($im->tags(name => 'tiff_bitspersample'), 32, "correct bits");
+ is($im->bits, 'double', 'check image bits');
+ is($im->tags(name => 'tiff_photometric'), 2, "correct photometric");
+ is($im->tags(name => 'tiff_compression'), 'none', "no compression");
+ is($im->getchannels, 4, 'correct channels');
+}
+
+{ # bilevel
+ my $im = test_image()->convert(preset => 'grey')
+ ->to_paletted(make_colors => 'mono',
+ translate => 'errdiff');
+ my $faxdata;
+
+ # fax compression is written as miniswhite
+ ok($im->write(data => \$faxdata, type => 'tiff',
+ tiff_compression => 'fax3'),
+ "write bilevel fax compressed");
+ my $fax = Imager->new;
+ ok($fax->read(data => $faxdata), "read it back");
+ ok($fax->is_bilevel, "got a bi-level image back");
+ is($fax->tags(name => 'tiff_compression'), 'fax3',
+ "check fax compression used");
+ is_image($fax, $im, "compare to original");
+
+ # other compresion written as minisblack
+ my $packdata;
+ ok($im->write(data => \$packdata, type => 'tiff',
+ tiff_compression => 'jpeg'),
+ "write bilevel packbits compressed");
+ my $packim = Imager->new;
+ ok($packim->read(data => $packdata), "read it back");
+ ok($packim->is_bilevel, "got a bi-level image back");
+ is($packim->tags(name => 'tiff_compression'), 'packbits',
+ "check fallback compression used");
+ is_image($packim, $im, "compare to original");
+}
+
+{ # fallback handling of tiff
+ is(Imager::i_tiff_has_compression('none'), 1, "can always do uncompresed");
+ is(Imager::i_tiff_has_compression('xxx'), '', "can't do xxx compression");
+}
+
+
projects / imager.git / blobdiff