From a3e9aad555c8df59b42cbd630e5a7abd6ed17ec2 Mon Sep 17 00:00:00 2001 From: Anssi Hannula Date: Sun, 3 Jan 2010 04:07:18 +0000 Subject: monitor-parse-edid: correctly parse some interlaced video timings if the Detailed Timing Descriptor specifies field vertical parameters instead of the frame parameters --- NEWS | 3 +++ monitor-parse-edid | 14 ++++++++++++++ 2 files changed, 17 insertions(+) diff --git a/NEWS b/NEWS index 87ee540..d6e07e9 100644 --- a/NEWS +++ b/NEWS @@ -16,6 +16,9 @@ EIA/CEA-861-B) in Video Data Blocks of CEA EDID Timing Extension o set Interlace flag for ModeLines created for interlaced Detailed Timings + o correctly parse some interlaced video timings if the Detailed Timing + Descriptor specifies field vertical parameters instead of the frame + parameters Version 2.5 - 18 October 2009, by Anssi Hannula diff --git a/monitor-parse-edid b/monitor-parse-edid index c29f8e5..a702cc6 100755 --- a/monitor-parse-edid +++ b/monitor-parse-edid @@ -835,6 +835,20 @@ sub parse_edid { foreach my $h (@{$edid{detailed_timings}}) { + # EDID standard is ambiguous on how interlaced modes should be + # specified; workaround clearly broken modes: + if ($h->{interlaced}) { + foreach ("720x480", "1440x480", "2880x480", "720x576", "1440x576", "2880x576", "1920x1080") { + if ($_ eq $h->{horizontal_active} . 'x' . $h->{vertical_active} * 2) { + $h->{vertical_active} *= 2; + $h->{vertical_blanking} *= 2; + $h->{vertical_sync_offset} *= 2; + $h->{vertical_sync_pulse_width} *= 2; + $h->{vertical_blanking} |= 1; + } + } + } + # 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'); -- cgit v1.2.1