From c7537cca968da1d2416981b1bb66bb50a9bd8026 Mon Sep 17 00:00:00 2001
From: lwvmobile <lwvmobile@gmail.com>
Date: Mon, 4 Sep 2023 17:20:42 -0400
Subject: [PATCH] EDACS Analog Call Dotting Sequence Detection;

---
 include/dsd.h   |  1 +
 src/dsd_dibit.c |  3 +--
 src/edacs-fme.c | 22 ++++++++++++++++++++--
 3 files changed, 22 insertions(+), 4 deletions(-)

diff --git a/include/dsd.h b/include/dsd.h
index f84bad1..7c113f5 100644
--- a/include/dsd.h
+++ b/include/dsd.h
@@ -927,6 +927,7 @@ void openAudioInDevice (dsd_opts * opts);
 
 int getDibit (dsd_opts * opts, dsd_state * state);
 int get_dibit_and_analog_signal (dsd_opts * opts, dsd_state * state, int * out_analog_signal);
+int digitize (dsd_opts* opts, dsd_state* state, int symbol);
 
 void skipDibit (dsd_opts * opts, dsd_state * state, int count);
 void saveImbe4400Data (dsd_opts * opts, dsd_state * state, char *imbe_d);
diff --git a/src/dsd_dibit.c b/src/dsd_dibit.c
index ae71f2e..b64039a 100644
--- a/src/dsd_dibit.c
+++ b/src/dsd_dibit.c
@@ -219,8 +219,7 @@ invert_dibit(int dibit)
     return -1;
 }
 
-static int digitize (dsd_opts* opts, dsd_state* state, int symbol)
-//int digitize (dsd_opts* opts, dsd_state* state, int symbol)
+int digitize (dsd_opts* opts, dsd_state* state, int symbol)
 {
   // determine dibit state
   if ((state->synctype == 6) || (state->synctype == 14)|| (state->synctype == 18) || (state->synctype == 37))
diff --git a/src/edacs-fme.c b/src/edacs-fme.c
index 3f6202f..6a4b55c 100644
--- a/src/edacs-fme.c
+++ b/src/edacs-fme.c
@@ -228,8 +228,6 @@ void edacs_analog(dsd_opts * opts, dsd_state * state, int afs, unsigned char lcn
     if (opts->floating_point == 1)
       fprintf (stderr, "Analog Floating Point Output Not Supported");
 
-    if (rms > sql) fprintf (stderr, "\n");
-
     //Update Ncurses Terminal
     if (opts->use_ncurses_terminal == 1)
       ncursesPrinter(opts, state);
@@ -243,6 +241,26 @@ void edacs_analog(dsd_opts * opts, dsd_state * state, int afs, unsigned char lcn
       sf_write_short(opts->wav_out_f, analog2, 960);
       sf_write_short(opts->wav_out_f, analog3, 960);
     }
+
+    //digitize analog samples for a dotting sequence check
+    unsigned long long int sr = 0;
+    for (i = 0; i < 960; i+=5) //Samples Per Symbol is 5, so incrememnt every 5
+    {
+      sr = sr << 1;
+      sr += digitize (opts, state, (int)analog1[i]);
+    }
+
+    //debug
+    // fprintf (stderr, " SR: %016llX", sr);
+
+    if (sr == 0xAAAAAAAAAAAAAAAA || sr == 0x5555555555555555)
+    {
+      fprintf (stderr, " EDACS DOTTING SEQUENCE: ");
+      rms = 0; //break while loop by dropping rms value
+      fprintf (stderr, "\n");
+    }
+
+    if (rms > sql) fprintf (stderr, "\n");
     
   }
 }