From 001f4956eae9d55bada4967b03e29944a161ced9 Mon Sep 17 00:00:00 2001
From: Oliver Jowett <oliver@mutability.co.uk>
Date: Thu, 15 Sep 2016 15:00:10 +0100
Subject: [PATCH] faup1090: report non-A-class categories.

---
 net_io.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/net_io.c b/net_io.c
index ea7602d..e6759ba 100644
--- a/net_io.c
+++ b/net_io.c
@@ -1800,6 +1800,7 @@ static void writeFATSV()
         int headingValid = 0;
         int headingMagValid = 0;
         int airgroundValid = 0;
+        int categoryValid = 0;
 
         uint64_t minAge;
 
@@ -1827,6 +1828,7 @@ static void writeFATSV()
         speedValid = trackDataValidEx(&a->speed_valid, now, 15000, SOURCE_MODE_S_CHECKED);
         speedIASValid = trackDataValidEx(&a->speed_ias_valid, now, 15000, SOURCE_MODE_S_CHECKED);
         speedTASValid = trackDataValidEx(&a->speed_tas_valid, now, 15000, SOURCE_MODE_S_CHECKED);
+        categoryValid = trackDataValidEx(&a->category_valid, now, 15000, SOURCE_MODE_S_CHECKED);
 
         // If we are definitely on the ground, suppress any unreliable altitude info.
         // When on the ground, ADS-B transponders don't emit an ADS-B message that includes
@@ -2014,6 +2016,15 @@ static void writeFATSV()
             useful = 1;
         }
 
+        if (categoryValid && (a->category & 0xF0) != 0xA0 && a->category_valid.updated > a->fatsv_last_emitted) {
+            // interesting category, not a regular aircraft
+            p += snprintf(p, bufsize(p,end), "\tcategory\t%02X", a->category);
+            if (a->category_valid.source == SOURCE_TISB) {
+                used_tisb = 1;
+            }
+            useful = 1;
+        }
+
         // if we didn't get at least an alt or a speed or a latlon or
         // a heading, bail out. We don't need to do anything special
         // to unwind prepareWrite().