From e75ab1c53ed49ae6fb7430d42f06de0b94e99ade Mon Sep 17 00:00:00 2001
From: f4exb <f4exb06@gmail.com>
Date: Mon, 14 Sep 2015 02:15:08 +0200
Subject: [PATCH] NFM demod: squelch slider with 0.1 dB precision

---
 plugins/channel/nfm/nfmdemod.cpp    | 4 ++--
 plugins/channel/nfm/nfmdemodgui.cpp | 2 +-
 plugins/channel/nfm/nfmdemodgui.ui  | 9 ++++++---
 3 files changed, 9 insertions(+), 6 deletions(-)

diff --git a/plugins/channel/nfm/nfmdemod.cpp b/plugins/channel/nfm/nfmdemod.cpp
index 3f33e78d2..aaa6e42a2 100644
--- a/plugins/channel/nfm/nfmdemod.cpp
+++ b/plugins/channel/nfm/nfmdemod.cpp
@@ -349,8 +349,8 @@ void NFMDemod::apply()
 
 	if (m_config.m_squelch != m_running.m_squelch)
 	{
-		// input is a power level in dB
-		m_squelchLevel = pow(10.0, m_config.m_squelch / 10.0);
+		// input is a value in tenths of dB
+		m_squelchLevel = pow(10.0, m_config.m_squelch / 100.0);
 		//m_squelchLevel *= m_squelchLevel;
 		m_afSquelch.setThreshold(m_squelchLevel);
 	}
diff --git a/plugins/channel/nfm/nfmdemodgui.cpp b/plugins/channel/nfm/nfmdemodgui.cpp
index 7c27a2e40..ed270d936 100644
--- a/plugins/channel/nfm/nfmdemodgui.cpp
+++ b/plugins/channel/nfm/nfmdemodgui.cpp
@@ -181,7 +181,7 @@ void NFMDemodGUI::on_volume_valueChanged(int value)
 
 void NFMDemodGUI::on_squelch_valueChanged(int value)
 {
-	ui->squelchText->setText(QString("%1 dB").arg(value));
+	ui->squelchText->setText(QString("%1").arg(value / 10.0, 0, 'f', 1));
 	applySettings();
 }
 
diff --git a/plugins/channel/nfm/nfmdemodgui.ui b/plugins/channel/nfm/nfmdemodgui.ui
index f9974a386..85122430c 100644
--- a/plugins/channel/nfm/nfmdemodgui.ui
+++ b/plugins/channel/nfm/nfmdemodgui.ui
@@ -130,8 +130,11 @@
     </item>
     <item row="4" column="4">
      <widget class="QSlider" name="squelch">
+      <property name="toolTip">
+       <string>Threshold min/max in dB</string>
+      </property>
       <property name="minimum">
-       <number>-30</number>
+       <number>-200</number>
       </property>
       <property name="maximum">
        <number>0</number>
@@ -140,7 +143,7 @@
        <number>1</number>
       </property>
       <property name="value">
-       <number>-20</number>
+       <number>-150</number>
       </property>
       <property name="orientation">
        <enum>Qt::Horizontal</enum>
@@ -214,7 +217,7 @@
        </size>
       </property>
       <property name="text">
-       <string>-40 dB</string>
+       <string>-15.0</string>
       </property>
       <property name="alignment">
        <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>