- peak detect: update of peaks without smooting

- send message of existent peak changes (frequency, pos)

- peak manager: added freq message output for channelizer

git-svn-id: http://moon:8086/svn/software/trunk/projects/GnuRadio@493 b431acfa-c32f-4a4a-93f1-934dc6c82436

gr-jay/lib/peak_detect_impl.h

@@ -149,18 +149,23 @@ namespace jay {
 				return pbh > 0;
 			}
 			
-			const Peak& merge(const Peak &other)
+			bool update(const Peak &other)
 			{
-				float beta = 0.5f;
-				float alpha = (1.f-beta);
-				float pos_f = alpha*(float)pos + beta*(float)other.pos;
-				float pbh_f = alpha*(float)pbh + beta*(float)other.pbh;
-				float frequency = alpha*(float)frequency + beta*(float)other.frequency;
-				pos = (int)(pos_f + 0.5f);
-				pbh = (int)(pbh_f + 0.5f);
+				bool changed = false;
+				if (pos != other.pos)
+				{
+					changed = true;
+				}
+				if (std::abs(frequency-other.frequency) >= (0.01*1e6))
+				{
+					changed = true;
+				}
+				frequency = other.frequency;
+				pos = other.pos;
+				pbh = other.pbh;
 				height_rel = other.height_rel;
 				height_abs = other.height_abs;
-				return *this;
+				return changed;
 			}
 			
 			int left() const