From 0b9582045e57b35833ebabee41531302325c5378 Mon Sep 17 00:00:00 2001
From: f4exb <f4exb06@gmail.com>
Date: Sat, 14 Jan 2017 07:17:06 +0100
Subject: [PATCH] Added options to specify own position

---
 dsd_main.cpp   | 16 +++++++++++++++-
 messagefile.md |  4 ++--
 2 files changed, 17 insertions(+), 3 deletions(-)

diff --git a/dsd_main.cpp b/dsd_main.cpp
index 4f428df..b8fe1e6 100644
--- a/dsd_main.cpp
+++ b/dsd_main.cpp
@@ -148,6 +148,10 @@ void usage()
     fprintf(stderr, "                You must have compiled with serialDV support (see Readme.md)\n");
     fprintf(stderr, "                Device name is the corresponding TTY USB device e.g /dev/ttyUSB0\n");
 #endif
+    fprintf(stderr, "  -P <float>    Own latitude in decimal degrees. Latitude is positive to the North. Default 0\n");
+    fprintf(stderr, "  -Q <float>    Own longitue in decimal degrees. Longitude is positive to the East. Default 0\n");
+    fprintf(stderr, "                This is useful when status messages (see -M option) contain geographical data\n");
+    fprintf(stderr, "                Practically this is only applicable to D-Star\n");
     fprintf(stderr, "\n");
     exit(0);
 }
@@ -181,6 +185,8 @@ int main(int argc, char **argv)
     int dvGain_dB = 0;
     int slots = 1;
     Mixer mixer;
+    float lat = 0.0f;
+    float lon = 0.0f;
 
     fprintf(stderr, "Digital Speech Decoder DSDcc\n");
 
@@ -188,7 +194,7 @@ int main(int argc, char **argv)
     signal(SIGINT, sigfun);
 
     while ((c = getopt(argc, argv,
-            "hep:qtv:i:o:g:nR:f:u:U:lL:D:d:T:M:m:")) != -1)
+            "hep:qtv:i:o:g:nR:f:u:U:lL:D:d:T:M:m:P:Q:")) != -1)
     {
         opterr = 0;
         switch (c)
@@ -352,12 +358,20 @@ int main(int argc, char **argv)
         case 'l':
             dsdDecoder.enableCosineFiltering(false);
             break;
+        case 'P':
+            sscanf(optarg, "%f", &lat);
+            break;
+        case 'Q':
+            sscanf(optarg, "%f", &lon);
+            break;
         default:
             usage();
             exit(0);
         }
     }
 
+    dsdDecoder.setMyPoint(lat, lon);
+
     if (strlen(log_file) > 0) {
         dsdDecoder.setLogFile(log_file);
     }
diff --git a/messagefile.md b/messagefile.md
index 01366ff..06aa016 100644
--- a/messagefile.md
+++ b/messagefile.md
@@ -96,8 +96,8 @@ There is one line per polling occurence with a fixed format depending on the pro
   - **7**: Destination repeater callsign (RPT2)
   - **8**: Informative text
   - **9**: 6 character locator a.k.a. Maidenhead locator
-  - **A**: Bearing to the station when own position is specified (option TBD)
-  - **B**: Distance to the station when own position is specified (option TBD)
+  - **A**: Bearing to the origin station when locator is defined and own position is specified (options -P and -Q)
+  - **B**: Distance to the origin station when locator is defined and own position is specified (options -P and -Q)
   
 <h3>YSF (Yaesu System Fusion)</h3>