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-rw-r--r--NEWS3
-rwxr-xr-xmonitor-parse-edid19
2 files changed, 20 insertions, 2 deletions
diff --git a/NEWS b/NEWS
index 883fefe..89243c6 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,6 @@
+- monitor-parse-edid:
+ o compute and display the "dpi" of the preferred modelines
+
Version 2.0 - 8 April 2008
- change license from LGPLv2+ to GPLv3+
diff --git a/monitor-parse-edid b/monitor-parse-edid
index d8b76b9..e976814 100755
--- a/monitor-parse-edid
+++ b/monitor-parse-edid
@@ -316,13 +316,28 @@ sub parse_edid {
$h->{bad_ratio} = 1 if abs($edid{ratio} - $h->{horizontal_active} / $h->{vertical_active}) > ($edid{ratio_precision} eq 'mm' ? 0.02 : 0.2);
+ if ($edid{max_size_vertical}) {
+ $h->{vertical_dpi} = $h->{vertical_active} / $edid{max_size_vertical} * 2.54;
+ }
+ if ($edid{max_size_horizontal}) {
+ $h->{horizontal_dpi} = $h->{horizontal_active} / $edid{max_size_horizontal} * 2.54;
+ }
+ my $dpi_string = '';
+ if ($h->{vertical_dpi} && $h->{horizontal_dpi}) {
+ $dpi_string =
+ abs($h->{vertical_dpi} / $h->{horizontal_dpi} - 1) < 0.05 ?
+ sprintf("%d dpi", $h->{horizontal_dpi}) :
+ sprintf("%dx%d dpi", $h->{horizontal_dpi}, $h->{vertical_dpi});
+ }
+
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->{ModeLine_comment} = sprintf qq(# Monitor preferred modeline (%.1f Hz vsync, %.1f kHz hsync, ratio %s%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} / $h->{vertical_active});
+ nearest_ratio($h->{horizontal_active} / $h->{vertical_active}, 0.01) || sprintf("%.2f", $h->{horizontal_active} / $h->{vertical_active}),
+ $dpi_string ? ", $dpi_string" : '';
$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},