testpat & kmsprint: improve mode prints

2 files changed, 13 insertions, 0 deletions

diff --git a/kms++/inc/kms++/videomode.h b/kms++/inc/kms++/videomode.h
index f9abaf9..ec16969 100644
--- a/kms++/inc/kms++/videomode.h
+++ b/kms++/inc/kms++/videomode.h
@@ -31,6 +31,9 @@ struct Videomode
         uint16_t vfp() const { return vsync_start - vdisplay; }
         uint16_t vsw() const { return vsync_end - vsync_start; }
         uint16_t vbp() const { return vtotal - vsync_end; }
+
+        bool interlace() const;
+        float calculated_vrefresh() const;
 };
 
 }
diff --git a/kms++/src/videomode.cpp b/kms++/src/videomode.cpp
index 30d47f8..16330bb 100644
--- a/kms++/src/videomode.cpp
+++ b/kms++/src/videomode.cpp
@@ -16,4 +16,14 @@ unique_ptr<Blob> Videomode::to_blob(Card& card) const
         return unique_ptr<Blob>(new Blob(card, &drm_mode, sizeof(drm_mode)));
 }
 
+bool Videomode::interlace() const
+{
+        return flags & DRM_MODE_FLAG_INTERLACE;
+}
+
+float Videomode::calculated_vrefresh() const
+{
+        return (clock * 1000.0) / (htotal * vtotal) * (interlace() ? 2 : 1);
+}
+
 }