From 2e12ab418509deb62d6be71d5c528e3b29a0e7fe Mon Sep 17 00:00:00 2001
From: Stelios Bounanos <vcs@enotty.net>
Date: Tue, 19 Feb 2008 05:14:36 +0000
Subject: [PATCH] Upstream version 2.10E

---
 configure.ac          |  2 +-
 src/include/viewpsk.h |  2 --
 src/psk/psk.cxx       | 51 ++++++++++++++-----------------------------
 src/psk/viewpsk.cxx   | 43 ------------------------------------
 4 files changed, 17 insertions(+), 81 deletions(-)

diff --git a/configure.ac b/configure.ac
index 864158f9..1667b862 100644
--- a/configure.ac
+++ b/configure.ac
@@ -4,7 +4,7 @@
 AC_COPYRIGHT([Copyright (C) 2007 Stelios Bounanos, M0GLD (m0gld AT enotty DOT net)])
 
 AC_PREREQ(2.61)
-AC_INIT([fldigi], [2.10D], [w1hkj AT w1hkj DOT com])
+AC_INIT([fldigi], [2.10E], [w1hkj AT w1hkj DOT com])
 AC_CONFIG_AUX_DIR([build-aux])
 
 # define build, build_cpu, build_vendor, build_os
diff --git a/src/include/viewpsk.h b/src/include/viewpsk.h
index 46aacbde..796fa01c 100644
--- a/src/include/viewpsk.h
+++ b/src/include/viewpsk.h
@@ -81,8 +81,6 @@ private:
 
 	void			findsignal(int);
 	void			afc(int);
-	void			sigdensity();
-	double			sigpeak(int &f, int f1, int f2);
 	
 public:
 	viewpsk(trx_mode mode);
diff --git a/src/psk/psk.cxx b/src/psk/psk.cxx
index 410bd7e6..1aa63c2a 100644
--- a/src/psk/psk.cxx
+++ b/src/psk/psk.cxx
@@ -302,22 +302,16 @@ int waitcount = 0;
 
 void psk::findsignal()
 {
-	double ftest, sigpwr, noise;
-	int searchBW;
+	int ftest, f1, f2;
 	
-// fast search for peak signal frequency
 	if (sigsearch > 0) {
 		sigsearch--;
-		if (mailserver) { 
-// mail server signal search
-			searchBW = progdefaults.ServerOffset;// - (int)bandwidth;
-			ftest = wf->peakFreq((int)(frequency), searchBW + (int)bandwidth/2);
-			sigpwr = wf->powerDensity(ftest,  bandwidth);
-			noise = wf->powerDensity(ftest + 2 * bandwidth, bandwidth / 2) +
-		    	    wf->powerDensity(ftest - 2 * bandwidth, bandwidth / 2) + 1e-20;
-			if (sigpwr/noise > SNTHRESHOLD) { // larger than the search threshold
+		if (mailserver) { // mail server search algorithm
+			f1 = (int)(frequency - progdefaults.ServerOffset);
+			f2 = (int)(frequency + progdefaults.ServerOffset);
+			if (evalpsk->sigpeak(ftest, f1, f2) > SNTHRESHOLD ) {
 				if (progdefaults.PSKmailSweetSpot) {
-					if (fabs(ftest - progdefaults.PSKsweetspot) < searchBW) {
+					if (fabs(ftest - progdefaults.PSKsweetspot) < progdefaults.ServerOffset) {
 						frequency = ftest;
 						set_freq(frequency);
 						freqerr = 0.0;
@@ -338,30 +332,17 @@ void psk::findsignal()
 					sigsearch = SIGSEARCH;
 				}
 			}
-		} else { 
-// normal signal search
-	int ftest;
-	int f1 = (int)(frequency - progdefaults.SearchRange/2);
-	int f2 = (int)(frequency + progdefaults.SearchRange/2);
-	if (evalpsk->sigpeak(ftest, f1, f2) > SNTHRESHOLD ){//SNTHRESHOLD) {
-		frequency = ftest;
-		set_freq(frequency);
-		freqerr = 0.0;
-		sigsearch = 0;
-	}
-//			searchBW = progdefaults.SearchRange;
-//			ftest = wf->peakFreq((int)(frequency), searchBW);
-//			sigpwr = wf->powerDensity(ftest,  bandwidth);
-//			noise = wf->powerDensity(ftest + 2 * bandwidth / 2, bandwidth / 2) +
-//		    	    wf->powerDensity(ftest - 2 * bandwidth / 2, bandwidth / 2) + 1e-20;
-//			if (sigpwr/noise > SNTHRESHOLD) { // larger than the detection threshold)
-//				frequency = ftest;
-//				set_freq(frequency);
-//				freqerr = 0.0;
-//			}
+		} else { // normal signal search algorithm
+			f1 = (int)(frequency - progdefaults.SearchRange/2);
+			f2 = (int)(frequency + progdefaults.SearchRange/2);
+			if (evalpsk->sigpeak(ftest, f1, f2) > SNTHRESHOLD ) {
+				frequency = ftest;
+				set_freq(frequency);
+				freqerr = 0.0;
+				sigsearch = 0;
+			}
 		}
-	}		
-
+	}
 }
 
 void psk::phaseafc()
diff --git a/src/psk/viewpsk.cxx b/src/psk/viewpsk.cxx
index 08c897a9..177d051f 100644
--- a/src/psk/viewpsk.cxx
+++ b/src/psk/viewpsk.cxx
@@ -146,49 +146,6 @@ void viewpsk::restart(trx_mode pskmode)
 	init();
 }
 
-//=============================================================================
-//========================== viewpsk signal evaluation ========================
-//=============================================================================
-void viewpsk::sigdensity() {
-	double sig = 0.0;
-	double val;
-	int hbw = (int)(bandwidth / 2);
-	int twohbw = 2 * hbw;
-	int flower = progdefaults.VIEWERstart - 50;
-	int fupper = flower + 100 * progdefaults.VIEWERchannels + 100;
-	double *vals = new double[twohbw + 1];
-	int j = -1;
-	sigavg = 0.0;
-	sigmin = 1e6;
-	for (int i = flower - hbw; i < fupper + hbw; i++) {
-		j++;
-		if (j == twohbw + 1) j = 0;
-		val = wf->Pwr(i);
-		if (i >= flower + twohbw) {
-			sigpwr[i - hbw - 1] = sig;
-			sig -= vals[j];
-		}
-		vals[j] = val;
-		sig += val;
-		sigavg += val;
-		if (sig > 0 && sig < sigmin) sigmin = sig;
-	}		
-	sigavg /= (fupper - flower - 100);
-}
-
-double viewpsk::sigpeak(int &f, int f1, int f2)
-{
-	double peak = 0;
-	f = (f1 + f2) / 2;
-	for (int i = f1; i <= f2; i++)
-		if (sigpwr[i] > peak) {
-			peak = sigpwr[i];
-			f = i;
-		}
-	return peak / sigavg;
-//	return peak / sigmin;
-}
-
 //=============================================================================
 //========================= viewpsk receive routines ==========================
 //=============================================================================