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#!perl -w
use strict;
use Test::More tests => 104;
BEGIN { use_ok(Imager=>qw(:all :handy)) }
init_log("testout/t021sixteen.log", 1);
use Imager::Color::Float;
use Imager::Test qw(test_image is_image image_bounds_checks test_colorf_gpix
test_colorf_glin mask_tests is_color3);
my $im_g = Imager::i_img_16_new(100, 101, 1);
is(Imager::i_img_getchannels($im_g), 1, "1 channel image channel count");
ok(Imager::i_img_getmask($im_g) & 1, "1 channel image mask");
ok(!Imager::i_img_virtual($im_g), "shouldn't be marked virtual");
is(Imager::i_img_bits($im_g), 16, "1 channel image has bits == 16");
is(Imager::i_img_type($im_g), 0, "1 channel image isn't direct");
my @ginfo = i_img_info($im_g);
is($ginfo[0], 100, "1 channel image width");
is($ginfo[1], 101, "1 channel image height");
undef $im_g;
my $im_rgb = Imager::i_img_16_new(100, 101, 3);
is(Imager::i_img_getchannels($im_rgb), 3, "3 channel image channel count");
ok((Imager::i_img_getmask($im_rgb) & 7) == 7, "3 channel image mask");
is(Imager::i_img_bits($im_rgb), 16, "3 channel image bits");
is(Imager::i_img_type($im_rgb), 0, "3 channel image type");
my $redf = NCF(1, 0, 0);
my $greenf = NCF(0, 1, 0);
my $bluef = NCF(0, 0, 1);
# fill with red
for my $y (0..101) {
Imager::i_plinf($im_rgb, 0, $y, ($redf) x 100);
}
pass("fill with red");
# basic sanity
test_colorf_gpix($im_rgb, 0, 0, $redf, 0, "top-left");
test_colorf_gpix($im_rgb, 99, 0, $redf, 0, "top-right");
test_colorf_gpix($im_rgb, 0, 100, $redf, 0, "bottom left");
test_colorf_gpix($im_rgb, 99, 100, $redf, 0, "bottom right");
test_colorf_glin($im_rgb, 0, 0, [ ($redf) x 100 ], "first line");
test_colorf_glin($im_rgb, 0, 100, [ ($redf) x 100 ], "last line");
Imager::i_plinf($im_rgb, 20, 1, ($greenf) x 60);
test_colorf_glin($im_rgb, 0, 1,
[ ($redf) x 20, ($greenf) x 60, ($redf) x 20 ],
"added some green in the middle");
{
my @samples;
is(Imager::i_gsamp_bits($im_rgb, 18, 22, 1, 16, \@samples, 0, 0 .. 2), 12,
"i_gsamp_bits all channels - count")
or print "# ", Imager->_error_as_msg(), "\n";
is_deeply(\@samples, [ 65535, 0, 0, 65535, 0, 0,
0, 65535, 0, 0, 65535, 0 ],
"check samples retrieved");
@samples = ();
is(Imager::i_gsamp_bits($im_rgb, 18, 22, 1, 16, \@samples, 0, 0, 2), 8,
"i_gsamp_bits some channels - count")
or print "# ", Imager->_error_as_msg(), "\n";
is_deeply(\@samples, [ 65535, 0, 65535, 0,
0, 0, 0, 0 ],
"check samples retrieved");
# fail gsamp
is(Imager::i_gsamp_bits($im_rgb, 18, 22, 1, 16, \@samples, 0, 0, 3), undef,
"i_gsamp_bits fail bad channel");
is(Imager->_error_as_msg(), 'No channel 3 in this image', 'check message');
is(Imager::i_gsamp_bits($im_rgb, 18, 22, 1, 17, \@samples, 0, 0, 2), 8,
"i_gsamp_bits succeed high bits");
is($samples[0], 131071, "check correct with high bits");
# write some samples back
my @wr_samples =
(
0, 0, 65535,
65535, 0, 0,
0, 65535, 0,
65535, 65535, 0
);
is(Imager::i_psamp_bits($im_rgb, 18, 2, 16, [ 0 .. 2 ], \@wr_samples),
12, "write 16-bit samples")
or print "# ", Imager->_error_as_msg(), "\n";
@samples = ();
is(Imager::i_gsamp_bits($im_rgb, 18, 22, 2, 16, \@samples, 0, 0 .. 2), 12,
"read them back")
or print "# ", Imager->_error_as_msg(), "\n";
is_deeply(\@samples, \@wr_samples, "check they match");
my $c = Imager::i_get_pixel($im_rgb, 18, 2);
is_color3($c, 0, 0, 255, "check it write to the right places");
}
# basic OO tests
my $oo16img = Imager->new(xsize=>200, ysize=>201, bits=>16);
ok($oo16img, "make a 16-bit oo image");
is($oo16img->bits, 16, "test bits");
isnt($oo16img->is_bilevel, "should not be considered mono");
# make sure of error handling
ok(!Imager->new(xsize=>0, ysize=>1, bits=>16),
"fail to create a 0 pixel wide image");
cmp_ok(Imager->errstr, '=~', qr/Image sizes must be positive/,
"and correct error message");
ok(!Imager->new(xsize=>1, ysize=>0, bits=>16),
"fail to create a 0 pixel high image");
cmp_ok(Imager->errstr, '=~', qr/Image sizes must be positive/,
"and correct error message");
ok(!Imager->new(xsize=>-1, ysize=>1, bits=>16),
"fail to create a negative width image");
cmp_ok(Imager->errstr, '=~', qr/Image sizes must be positive/,
"and correct error message");
ok(!Imager->new(xsize=>1, ysize=>-1, bits=>16),
"fail to create a negative height image");
cmp_ok(Imager->errstr, '=~', qr/Image sizes must be positive/,
"and correct error message");
ok(!Imager->new(xsize=>-1, ysize=>-1, bits=>16),
"fail to create a negative width/height image");
cmp_ok(Imager->errstr, '=~', qr/Image sizes must be positive/,
"and correct error message");
ok(!Imager->new(xsize=>1, ysize=>1, bits=>16, channels=>0),
"fail to create a zero channel image");
cmp_ok(Imager->errstr, '=~', qr/channels must be between 1 and 4/,
"and correct error message");
ok(!Imager->new(xsize=>1, ysize=>1, bits=>16, channels=>5),
"fail to create a five channel image");
cmp_ok(Imager->errstr, '=~', qr/channels must be between 1 and 4/,
"and correct error message");
{
# https://rt.cpan.org/Ticket/Display.html?id=8213
# check for handling of memory allocation of very large images
# only test this on 32-bit machines - on a 64-bit machine it may
# result in trying to allocate 4Gb of memory, which is unfriendly at
# least and may result in running out of memory, causing a different
# type of exit
SKIP: {
use Config;
$Config{intsize} == 4
or skip("don't want to allocate 4Gb", 8);
my $uint_range = 256 ** $Config{intsize};
print "# range $uint_range\n";
my $dim1 = int(sqrt($uint_range/2))+1;
my $im_b = Imager->new(xsize=>$dim1, ysize=>$dim1, channels=>1, bits=>16);
is($im_b, undef, "integer overflow check - 1 channel");
$im_b = Imager->new(xisze=>$dim1, ysize=>1, channels=>1, bits=>16);
ok($im_b, "but same width ok");
$im_b = Imager->new(xisze=>1, ysize=>$dim1, channels=>1, bits=>16);
ok($im_b, "but same height ok");
cmp_ok(Imager->errstr, '=~', qr/integer overflow/,
"check the error message");
# do a similar test with a 3 channel image, so we're sure we catch
# the same case where the third dimension causes the overflow
my $dim3 = int(sqrt($uint_range / 3 / 2))+1;
$im_b = Imager->new(xsize=>$dim3, ysize=>$dim3, channels=>3, bits=>16);
is($im_b, undef, "integer overflow check - 3 channel");
$im_b = Imager->new(xisze=>$dim3, ysize=>1, channels=>3, bits=>16);
ok($im_b, "but same width ok");
$im_b = Imager->new(xisze=>1, ysize=>$dim3, channels=>3, bits=>16);
ok($im_b, "but same height ok");
cmp_ok(Imager->errstr, '=~', qr/integer overflow/,
"check the error message");
# check we can allocate a scanline, unlike double images the scanline
# in the image itself is smaller than a line of i_fcolor
# divide by 2 to get to int range, by 2 for 2 bytes/pixel, by 3 to
# fit the image allocation in, but for the floats to overflow
my $dim4 = $uint_range / 2 / 2 / 3;
my $im_o = Imager->new(xsize=>$dim4, ysize=>1, channels=>1, bits=>16);
is($im_o, undef, "integer overflow check - scanline");
cmp_ok(Imager->errstr, '=~',
qr/integer overflow calculating scanline allocation/,
"check error message");
}
}
{ # check the channel mask function
my $im = Imager->new(xsize => 10, ysize=>10, bits=>16);
mask_tests($im, 1.0/65535);
}
{ # convert to rgb16
my $im = test_image();
my $im16 = $im->to_rgb16;
print "# check conversion to 16 bit\n";
is($im16->bits, 16, "check bits");
is_image($im, $im16, "check image data matches");
}
{ # bounds checks
my $im = Imager->new(xsize => 10, ysize => 10, bits => 16);
image_bounds_checks($im);
}
{
my $im = Imager->new(xsize => 10, ysize => 10, bits => 16, channels => 3);
my @wr_samples = map int(rand 65536), 1..30;
is($im->setsamples('y' => 1, data => \@wr_samples, type => '16bit'),
30, "write 16-bit to OO image")
or print "# ", $im->errstr, "\n";
my @samples;
is($im->getsamples(y => 1, target => \@samples, type => '16bit'),
30, "read 16-bit from OO image")
or print "# ", $im->errstr, "\n";
is_deeply(\@wr_samples, \@samples, "check it matches");
}
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