From 017e5d391b3a867ba6ce016bf58f11ee9ec97dba Mon Sep 17 00:00:00 2001
From: Oliver Jowett <oliver.jowett@flightaware.com>
Date: Wed, 21 Jul 2021 19:42:01 +0800
Subject: [PATCH] Add ADAPTIVE_DYNAMIC_RANGE_TARGET config var

---
 debian/dump1090-fa.default | 2 ++
 debian/start-dump1090-fa   | 1 +
 2 files changed, 3 insertions(+)

diff --git a/debian/dump1090-fa.default b/debian/dump1090-fa.default
index 21bb492..d1ba5e2 100644
--- a/debian/dump1090-fa.default
+++ b/debian/dump1090-fa.default
@@ -15,6 +15,8 @@ RECEIVER_GAIN=60
 
 # Adjust gain to try to achieve optimal dynamic range / noise floor?
 ADAPTIVE_DYNAMIC_RANGE=yes
+# Target dynamic range in dB (leave blank to autoselect based on SDR type)
+ADAPTIVE_DYNAMIC_RANGE_TARGET=
 # Reduce gain when loud message bursts from nearby aircraft are seen?
 ADAPTIVE_BURST=no
 # Gain range to allow when changing gain, in dB (empty = no limit)
diff --git a/debian/start-dump1090-fa b/debian/start-dump1090-fa
index f8b0507..ae7d523 100755
--- a/debian/start-dump1090-fa
+++ b/debian/start-dump1090-fa
@@ -48,6 +48,7 @@ else
     if [ -n "$WISDOM" -a -f "$WISDOM" ]; then OPTS="$OPTS --wisdom $WISDOM"; fi
 
     if [ "$ADAPTIVE_DYNAMIC_RANGE" = "yes" ]; then OPTS="$OPTS --adaptive-range"; fi
+    if [ -n "$ADAPTIVE_DYNAMIC_RANGE_TARGET" ]; then OPTS="$OPTS --adaptive-range-target $ADAPTIVE_DYNAMIC_RANGE_TARGET"; fi
     if [ "$ADAPTIVE_BURST" = "yes" ]; then OPTS="$OPTS --adaptive-burst"; fi
     if [ -n "$ADAPTIVE_MIN_GAIN" ]; then OPTS="$OPTS --adaptive-min-gain $ADAPTIVE_MIN_GAIN"; fi
     if [ -n "$ADAPTIVE_MAX_GAIN" ]; then OPTS="$OPTS --adaptive-max-gain $ADAPTIVE_MAX_GAIN"; fi