/usr/local/CPAN/Ocsinventory-Agent/Ocsinventory/Agent/Backend/OS/Generic/Screen.pm
package Ocsinventory::Agent::Backend::OS::Generic::Screen;
# Copyright (C) 2005 Mandriva
# Copyright (C) 2007 Gonéri Le Bouder <goneri@rulezlan.org>
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
# Some part come from Mandriva's (great) monitor-edid
# http://svn.mandriva.com/cgi-bin/viewvc.cgi/soft/monitor-edid/trunk/
#
use strict;
sub check {
return unless (can_run("monitor-get-edid-using-vbe") || can_run("monitor-get-edid") || can_run("get-edid"));
1;
}
sub getEdid {
my $raw_edid;
# Mandriva
$raw_edid = `monitor-get-edid-using-vbe 2>/dev/null`;
# Since monitor-edid 1.15, it's possible to retrieve EDID information
# through DVI link but we need to use monitor-get-edid
if (!$raw_edid) {
$raw_edid = `monitor-get-edid 2>/dev/null`;
}
if (!$raw_edid) {
foreach (1..5) { # Sometime get-edid return an empty string...
$raw_edid = `get-edid 2>/dev/null`;
return 1 if (length($raw_edid) == 128 || length($raw_edid) == 256);
}
}
return unless (length($raw_edid) == 128 || length($raw_edid) == 256);
return $raw_edid;
}
my @CVT_ratios = qw(5/4 4/3 3/2 16/10 15/9 16/9);
my @known_ratios = @CVT_ratios;
my @edid_info = group_by2(
a8 => '_header',
a2 => 'manufacturer_name',
v => 'product_code',
V => 'serial_number',
C => 'week',
C => 'year',
C => 'edid_version',
C => 'edid_revision',
a => 'video_input_definition',
C => 'max_size_horizontal', # in cm, 0 on projectors
C => 'max_size_vertical', # in cm, 0 on projectors
C => 'gamma',
a => 'feature_support',
a10 => '_color_characteristics',
a3 => 'established_timings',
a16 => 'standard_timings',
a72 => 'monitor_details',
C => 'extension_flag',
C => 'checksum',
);
my %subfields = (
manufacturer_name => [ group_by2(
1 => '',
5 => '1',
5 => '2',
5 => '3',
) ],
video_input_definition => [ group_by2(
1 => 'digital',
1 => 'separate_sync',
1 => 'composite_sync',
1 => 'sync_on_green',
2 => '',
2 => 'voltage_level',
) ],
feature_support => [ group_by2(
1 => 'DPMS_standby',
1 => 'DPMS_suspend',
1 => 'DPMS_active_off',
1 => 'rgb',
1 => '',
1 => 'sRGB_compliance',
1 => 'has_preferred_timing',
1 => 'GTF_compliance',
) ],
established_timings => [ group_by2(
1 => '720x400_70',
1 => '720x400_88',
1 => '640x480_60',
1 => '640x480_67',
1 => '640x480_72',
1 => '640x480_75',
1 => '800x600_56',
1 => '800x600_60',
1 => '800x600_72',
1 => '800x600_75',
1 => '832x624_75',
1 => '1024x768_87i',
1 => '1024x768_60',
1 => '1024x768_70',
1 => '1024x768_75',
1 => '1280x1024_75',
) ],
detailed_timing => [ group_by2(
8 => 'horizontal_active',
8 => 'horizontal_blanking',
4 => 'horizontal_active_hi',
4 => 'horizontal_blanking_hi',
8 => 'vertical_active',
8 => 'vertical_blanking',
4 => 'vertical_active_hi',
4 => 'vertical_blanking_hi',
8 => 'horizontal_sync_offset',
8 => 'horizontal_sync_pulse_width',
4 => 'vertical_sync_offset',
4 => 'vertical_sync_pulse_width',
2 => 'horizontal_sync_offset_hi',
2 => 'horizontal_sync_pulse_width_hi',
2 => 'vertical_sync_offset_hi',
2 => 'vertical_sync_pulse_width_hi',
8 => 'horizontal_image_size', # in mm
8 => 'vertical_image_size', # in mm
4 => 'horizontal_image_size_hi',
4 => 'vertical_image_size_hi',
8 => 'horizontal_border',
8 => 'vertical_border',
1 => 'interlaced',
2 => 'stereo',
2 => 'digital_composite',
1 => 'horizontal_sync_positive',
1 => 'vertical_sync_positive',
1 => '',
) ],
standard_timing => [ group_by2(
8 => 'X',
2 => 'aspect',
6 => 'vfreq',
) ],
monitor_range => [ group_by2(
8 => 'vertical_min',
8 => 'vertical_max',
8 => 'horizontal_min',
8 => 'horizontal_max',
8 => 'pixel_clock_max',
) ],
manufacturer_specified_range_timing => [ group_by2(
# http://www.spwg.org/salisbury_march_19_2002.pdf
# for the glossary: http://www.vesa.org/Public/PSWG/PSWG15v1.pdf
8 => 'horizontal_sync_pulse_width_min', # HSPW (Horizontal Sync Pulse Width)
8 => 'horizontal_sync_pulse_width_max',
8 => 'horizontal_back_porch_min', # t_hbp
8 => 'horizontal_back_porch_max',
8 => 'vertical_sync_pulse_width_min', # VSPW (Vertical Sync Pulse Width)
8 => 'vertical_sync_pulse_width_max',
8 => 'vertical_back_porch_min', # t_vbp (Vertical Back Porch)
8 => 'vertical_back_porch_max',
8 => 'horizontal_blanking_min', # t_hp (Horizontal Period)
8 => 'horizontal_blanking_max',
8 => 'vertical_blanking_min', # t_vp
8 => 'vertical_blanking_max',
8 => 'module_revision',
) ],
);
sub get_many_bits {
my ($s, $field_name) = @_;
my @bits = split('', unpack('B*', $s));
my %h;
foreach (@{$subfields{$field_name}}) {
my ($size, $field) = @$_;
my @l = ('0' x (8 - $size), splice(@bits, 0, $size));
$h{$field} = unpack("C", pack('B*', join('', @l))) if $field && $field !~ /^_/;
}
\%h;
}
sub check_parsed_edid {
my ($edid) = @_;
$edid->{manufacturer_name} ne '@@@' or return 'bad manufacturer_name';
$edid->{edid_version} != 0xff && $edid->{edid_revision} != 0xff or return 'bad edid_version';
if ($edid->{monitor_range}) {
$edid->{monitor_range}{horizontal_min} &&
$edid->{monitor_range}{horizontal_min} <= $edid->{monitor_range}{horizontal_max}
or return 'bad HorizSync';
$edid->{monitor_range}{vertical_min} &&
$edid->{monitor_range}{vertical_min} <= $edid->{monitor_range}{vertical_max}
or return 'bad VertRefresh';
}
'';
}
sub parse_edid {
my ($raw_edid) = @_;
my %edid;
my @vals = unpack(join('', map { $_->[0] } @edid_info), $raw_edid);
my $i;
foreach (@edid_info) {
my ($field, $v) = ($_->[1], $vals[$i++]);
if ($field eq 'year') {
$v += 1990;
} elsif ($field eq 'manufacturer_name') {
my $h = get_many_bits($v, 'manufacturer_name');
$v = join('', map { chr(ord('A') + $h->{$_} - 1) } 1 .. 3);
} elsif ($field eq 'video_input_definition') {
$v = get_many_bits($v, 'video_input_definition');
} elsif ($field eq 'feature_support') {
$v = get_many_bits($v, 'feature_support');
} elsif ($field eq 'established_timings') {
my $h = get_many_bits($v, 'established_timings');
$v = [
sort { $a->{X} <=> $b->{X} || $a->{vfreq} <=> $b->{vfreq} }
map { /(\d+)x(\d+)_(\d+)(i?)/ ? { X => $1, Y => $2, vfreq => $3, $4 ? (interlace => 1) : () } : () }
grep { $h->{$_} } keys %$h ];
} elsif ($field eq 'standard_timings') {
my @aspect2ratio = (
$edid{edid_version} > 1 || $edid{edid_revision} > 2 ? '16/10' : '1/1',
'4/3', '5/4', '16/9',
);
$v = [ map {
my $h = get_many_bits($_, 'standard_timing');
$h->{X} = ($h->{X} + 31) * 8;
if ($_ ne "\x20\x20" && $h->{X} > 256) { # cf VALID_TIMING in Xorg edid.h
$h->{vfreq} += 60;
if ($h->{ratio} = $aspect2ratio[$h->{aspect}]) {
delete $h->{aspect};
$h->{Y} = $h->{X} / eval($h->{ratio});
}
$h;
} else { () }
} unpack('a2' x 8, $v) ];
} elsif ($field eq 'monitor_details') {
while ($v) {
(my $pixel_clock, my $vv, $v) = unpack("v a16 a*", $v);
if ($pixel_clock) {
# detailed timing
my $h = get_many_bits($vv, 'detailed_timing');
$h->{pixel_clock} = $pixel_clock / 100; # to have it in MHz
my %detailed_timing_field_size = map { $_->[1], $_->[0] } @{$subfields{detailed_timing}};
foreach my $field (keys %detailed_timing_field_size) {
$field =~ s/_hi$// or next;
my $hi = delete($h->{$field . '_hi'});
$h->{$field} += $hi << $detailed_timing_field_size{$field};
}
push @{$edid{detailed_timings}}, $h
if $h->{horizontal_active} > 0 && $h->{vertical_active} > 0;
} else {
(my $flag, $vv) = unpack("n x a*", $vv);
if ($flag == 0xfd) {
# range
$edid{monitor_range} = get_many_bits($vv, 'monitor_range');
if ($edid{monitor_range}{pixel_clock_max} == 0xff) {
delete $edid{monitor_range}{pixel_clock_max};
} else {
$edid{monitor_range}{pixel_clock_max} *= 10; #- to have it in MHz
}
} elsif ($flag == 0xf) {
my $range = get_many_bits($vv, 'manufacturer_specified_range_timing');
my $e = $edid{detailed_timings}[0];
my $valid = 1;
foreach my $m ('min', 'max') {
my %total;
foreach my $dir ('horizontal', 'vertical') {
$range->{$dir . '_sync_pulse_width_' . $m} *= 2;
$range->{$dir . '_back_porch_' . $m} *= 2;
$range->{$dir . '_blanking_' . $m} *= 2;
if ($e && $e->{$dir . '_active'}) {
$total{$dir} = $e->{$dir . '_active'} + $range->{$dir . '_blanking_' . $m};
}
}
if ($total{horizontal} && $total{vertical}) {
my $hfreq = $e->{pixel_clock} * 1000 / $total{horizontal};
my $vfreq = $hfreq * 1000 / $total{vertical};
$range->{'horizontal_' . ($m eq 'min' ? 'max' : 'min')} = round($hfreq);
$range->{'vertical_' . ($m eq 'min' ? 'max' : 'min')} = round($vfreq);
} else {
$valid = 0;
}
}
$edid{$valid ? 'monitor_range' : 'manufacturer_specified_range_timing'} = $range;
} elsif ($flag == 0xfc) {
my $prev = $edid{monitor_name};
$edid{monitor_name} = ($prev ? "$prev " : '') . unpack('A13', $vv);
} elsif ($flag == 0xfe) {
push @{$edid{monitor_text}}, unpack('A13', $vv);
} elsif ($flag == 0xff) {
push @{$edid{serial_number2}}, unpack('A13', $vv);
} else {
#warn "parse_edid: unknown flag $flag\n";
}
}
}
}
$edid{$field} = $v if $field && $field !~ /^_/;
}
$edid{max_size_precision} = 'cm';
$edid{EISA_ID} = $edid{manufacturer_name} . sprintf('%04x', $edid{product_code}) if $edid{product_code};
if ($edid{monitor_range}) {
$edid{HorizSync} = $edid{monitor_range}{horizontal_min} . '-' . $edid{monitor_range}{horizontal_max};
$edid{VertRefresh} = $edid{monitor_range}{vertical_min} . '-' . $edid{monitor_range}{vertical_max};
}
if ($edid{max_size_vertical}) {
$edid{ratio} = $edid{max_size_horizontal} / $edid{max_size_vertical};
$edid{ratio_name} = ratio_name($edid{max_size_horizontal}, $edid{max_size_vertical}, 'cm');
$edid{ratio_precision} = 'cm';
}
foreach my $h (@{$edid{detailed_timings}}) {
my $horizontal_total = $h->{horizontal_active} + $h->{horizontal_blanking};
my $vertical_total = $h->{vertical_active} + $h->{vertical_blanking};
$h->{ModeLine_comment} = sprintf qq(# Monitor preferred modeline (%.1f Hz vsync, %.1f kHz hsync, ratio %s)),
$h->{pixel_clock} / $horizontal_total / $vertical_total * 1000 * 1000,
$h->{pixel_clock} / $horizontal_total * 1000,
nearest_ratio($h->{horizontal_active} / $h->{vertical_active}, 0.01) || sprintf("%.2f", $h->{horizontal_active} / $h->{vertical_active});
$h->{ModeLine} = sprintf qq("%dx%d" $h->{pixel_clock} %d %d %d %d %d %d %d %d %shsync %svsync),
$h->{horizontal_active}, $h->{vertical_active},
$h->{horizontal_active},
$h->{horizontal_active} + $h->{horizontal_sync_offset},
$h->{horizontal_active} + $h->{horizontal_sync_offset} + $h->{horizontal_sync_pulse_width},
$horizontal_total,
$h->{vertical_active},
$h->{vertical_active} + $h->{vertical_sync_offset},
$h->{vertical_active} + $h->{vertical_sync_offset} + $h->{vertical_sync_pulse_width},
$vertical_total,
$h->{horizontal_sync_positive} ? '+' : '-',
$h->{vertical_sync_positive} ? '+' : '-';
# if the mm size given in the detailed_timing is not far from the cm size
# put it as a more precise cm size
my %in_cm = map { $_ => $h->{$_ . '_image_size'} / 10 } ('horizontal', 'vertical');
my ($error) = sort { $b <=> $a } map { abs($edid{'max_size_' . $_} - $in_cm{$_}) } keys %in_cm;
if ($error <= 0.5) {
$edid{'max_size_' . $_} = $in_cm{$_} foreach keys %in_cm;
$edid{max_size_precision} = 'mm';
}
if ($error < 1 && $in_cm{vertical}) {
# using it for the ratio
$edid{ratio} = $in_cm{horizontal} / $in_cm{vertical};
$edid{ratio_name} = ratio_name($in_cm{horizontal}, $in_cm{vertical}, 'mm');
$edid{ratio_precision} = 'mm';
}
$h->{bad_ratio} = 1 if abs($edid{ratio} - $h->{horizontal_active} / $h->{vertical_active}) > ($edid{ratio_precision} eq 'mm' ? 0.02 : 0.2);
}
$edid{diagonal_size} = sqrt(sqr($edid{max_size_horizontal}) +
sqr($edid{max_size_vertical})) / 2.54;
\%edid;
}
sub nearest_ratio {
my ($ratio, $max_error) = @_;
my @sorted =
sort { $a->[1] <=> $b->[1] }
map {
my $error = abs($ratio - eval($_));
$error > $max_error ? () : [ $_, $error ];
} @known_ratios;
$sorted[0][0];
}
sub ratio_name {
my ($horizontal, $vertical, $precision) = @_;
if ($precision eq 'mm') {
nearest_ratio($horizontal / $vertical, 0.1);
} else {
my $error = 0.5;
my $ratio1 = nearest_ratio(($horizontal + $error) / ($vertical - $error), 0.2);
my $ratio2 = nearest_ratio(($horizontal - $error) / ($vertical + $error), 0.2);
$ratio1 && $ratio2 or return;
if ($ratio1 eq $ratio2) {
$ratio1;
} else {
my $ratio = nearest_ratio($horizontal / $vertical, 0.2);
join(' or ', $ratio, $ratio eq $ratio1 ? $ratio2 : $ratio1);
}
}
}
sub to_MonitorsDB {
my ($edid) = @_;
$edid->{monitor_range} && $edid->{EISA_ID} or return;
my $detailed_timings = $edid->{detailed_timings} || [];
my @preferred_resolutions = map {
join('x', $_->{horizontal_active}, $_->{vertical_active});
} grep { !$_->{bad_ratio} } @$detailed_timings;
(my $monitor_name = $edid->{monitor_name}) =~ s/;/,/g;
my ($raw_vendor, $raw_model) = $edid->{EISA_ID} =~ /(...)(.*)/;
my ($VendorName, $only_Model) =
$monitor_name =~ /(\S+)\s(.*)/ ?
($1, $2) :
($raw_vendor, $monitor_name || $raw_model);
join('; ',
$VendorName, "$VendorName $only_Model", $edid->{EISA_ID},
sprintf("%u-%u", $edid->{monitor_range}{horizontal_min}, $edid->{monitor_range}{horizontal_max}),
sprintf("%u-%u", $edid->{monitor_range}{vertical_min}, $edid->{monitor_range}{vertical_max}),
@$detailed_timings == 1 ? @preferred_resolutions : (),
);
}
sub print_edid {
my ($edid, $verbose) = @_;
print "Name: $edid->{monitor_name}\n" if $edid->{monitor_name};
print "EISA ID: $edid->{EISA_ID}\n" if $edid->{EISA_ID};
printf "Screen size: %.1f cm x %.1f cm (%3.2f inches%s)\n",
$edid->{max_size_horizontal},
$edid->{max_size_vertical},
$edid->{diagonal_size},
$edid->{ratio_name} ? sprintf(", aspect ratio %s = %.2f", $edid->{ratio_name}, $edid->{ratio}) :
$edid->{ratio} ? sprintf(", aspect ratio %.2f", $edid->{ratio}) : '';
print "Gamma: ", $edid->{gamma} / 100 + 1, "\n";
printf "%s signal\n", $edid->{video_input_definition}{digital} ? 'Digital' : 'Analog';
if ($verbose) {
foreach (@{$edid->{established_timings} || []}) {
print "Standard resolution: $_->{X}x$_->{Y} @ $_->{vfreq} Hz (established timing)\n" if !$_->{interlace};
}
foreach (@{$edid->{standard_timings} || []}) {
print "Standard resolution: $_->{X}x$_->{Y} @ $_->{vfreq} Hz, ratio $_->{ratio}",
$edid->{ratio_name} && index($edid->{ratio_name}, $_->{ratio}) == -1 ? ' (!)' : '',
"\n";
}
}
if ($edid->{monitor_range}) {
printf "Max video bandwidth: %u MHz\n", $edid->{monitor_range}{pixel_clock_max} if $edid->{monitor_range}{pixel_clock_max};
print "\n";
printf "\tHorizSync %u-%u\n", $edid->{monitor_range}{horizontal_min}, $edid->{monitor_range}{horizontal_max};
printf "\tVertRefresh %u-%u\n", $edid->{monitor_range}{vertical_min}, $edid->{monitor_range}{vertical_max};
}
foreach my $h (@{$edid->{detailed_timings}}) {
print "\n";
print "\t", $h->{ModeLine_comment}, $h->{bad_ratio} ? ' (bad ratio)' : '', "\n";
print "\tModeLine ", $h->{ModeLine}, "\n";
}
}
sub _getManifacturerFromCode {
my $code = shift;
my $h = {
"ACT" => "Targa",
"ADI" => "ADI Corporation http://www.adi.com.tw",
"AOC" => "AOC International (USA) Ltd.",
"API" => "Acer America Corp.",
"APP" => "Apple Computer, Inc.",
"ART" => "ArtMedia",
"AST" => "AST Research",
"CPL" => "Compal Electronics, Inc. / ALFA",
"CPQ" => "COMPAQ Computer Corp.",
"CTX" => "CTX - Chuntex Electronic Co.",
"DEC" => "Digital Equipment Corporation",
"DEL" => "Dell Computer Corp.",
"DPC" => "Delta Electronics, Inc.",
"DWE" => "Daewoo Telecom Ltd",
"ECS" => "ELITEGROUP Computer Systems",
"EIZ" => "EIZO",
"FCM" => "Funai Electric Company of Taiwan",
"FUS" => "Fujitsu Siemens",
"GSM" => "LG Electronics Inc. (GoldStar Technology, Inc.)",
"GWY" => "Gateway 2000",
"HEI" => "Hyundai Electronics Industries Co., Ltd.",
"HIT" => "Hitachi",
"HSL" => "Hansol Electronics",
"HTC" => "Hitachi Ltd. / Nissei Sangyo America Ltd.",
"HWP" => "Hewlett Packard",
"IBM" => "IBM PC Company",
"ICL" => "Fujitsu ICL",
"IVM" => "Idek Iiyama North America, Inc.",
"KFC" => "KFC Computek",
"LKM" => "ADLAS / AZALEA",
"LNK" => "LINK Technologies, Inc.",
"LTN" => "Lite-On",
"MAG" => "MAG InnoVision",
"MAX" => "Maxdata Computer GmbH",
"MEI" => "Panasonic Comm. & Systems Co.",
"MEL" => "Mitsubishi Electronics",
"MIR" => "miro Computer Products AG",
"MTC" => "MITAC",
"NAN" => "NANAO",
"NEC" => "NEC Technologies, Inc.",
"NOK" => "Nokia",
"OQI" => "OPTIQUEST",
"PBN" => "Packard Bell",
"PGS" => "Princeton Graphic Systems",
"PHL" => "Philips Consumer Electronics Co.",
"REL" => "Relisys",
"SAM" => "Samsung",
"SMI" => "Smile",
"SMC" => "Samtron",
"SNI" => "Siemens Nixdorf",
"SNY" => "Sony Corporation",
"SPT" => "Sceptre",
"SRC" => "Shamrock Technology",
"STN" => "Samtron",
"STP" => "Sceptre",
"TAT" => "Tatung Co. of America, Inc.",
"TRL" => "Royal Information Company",
"TSB" => "Toshiba, Inc.",
"UNM" => "Unisys Corporation",
"VSC" => "ViewSonic Corporation",
"WTC" => "Wen Technology",
"ZCM" => "Zenith Data Systems",
"___" => "Targa" };
return $h->{$code} if (exists ($h->{$code}) && $h->{$code});
return "Unknown manufacturer code ".$code;
}
sub sqr { $_[0] * $_[0] }
sub round { int($_[0] + 0.5) }
sub group_by2 {
my @l;
for (my $i = 0; $i < @_; $i += 2) {
push @l, [ $_[$i], $_[$i+1] ];
}
@l;
}
sub run {
my $params = shift;
my $inventory = $params->{inventory};
my $logger = $params->{logger};
my $raw_perl = 1;
my $verbose;
my $MonitorsDB;
my $base64;
my $uuencode;
my $raw_edid;
foreach (1..5) { # Sometime get-edid return an empty string...
$raw_edid = getEdid();
last if (length($raw_edid) == 128 || length($raw_edid) == 256);
}
return unless $raw_edid;
length($raw_edid) == 128 || length($raw_edid) == 256 or
$logger->debug("incorrect lenght: bad edid");
my $edid = parse_edid($raw_edid);
if (my $err = check_parsed_edid($edid)) {
$logger->debug("check failed: bad edid: $err");
}
my $caption = $edid->{monitor_name};
my $description = $edid->{week}."/".$edid->{year};
my $manufacturer = _getManifacturerFromCode($edid->{manufacturer_name});
my $serial = $edid->{serial_number2}[0];
eval "use MIME::Base64;";
$base64 = encode_base64($raw_edid) if !$@;
if (can_run("uuencode")) {
$uuencode = `echo $raw_edid|uuencode -`;
if (!$base64) {
$base64 = `echo $raw_edid|uuencode -m -`;
}
}
$inventory->addMonitors ({
BASE64 => $base64,
CAPTION => $caption,
DESCRIPTION => $description,
MANUFACTURER => $manufacturer,
SERIAL => $serial,
UUENCODE => $uuencode,
});
}
1;