#2301 am decoder enhancements. New squelch control and filter enhancements. (#2556)

Co-authored-by: denny <dennis.sheirer@gmail.com>

src/test/java/io/github/dsheirer/audio/playback/AudioProviderPcmTest.java

@@ -0,0 +1,44 @@
+/*
+ * *****************************************************************************
+ * Copyright (C) 2014-2026 Dennis Sheirer
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>
+ * ****************************************************************************
+ */
+package io.github.dsheirer.audio.playback;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import org.junit.jupiter.api.Test;
+
+/**
+ * Unit tests for audio provider sample conversion
+ */
+class AudioProviderPcmTest
+{
+    @Test
+    void outOfRangeSamplesAreLimitedInsteadOfWrapping()
+    {
+        assertEquals(Short.MAX_VALUE, AudioProvider.toPcm(1.35f));
+        assertEquals(-Short.MAX_VALUE, AudioProvider.toPcm(-26.0f));
+    }
+
+    @Test
+    void inRangeSamplesAreScaled()
+    {
+        assertEquals(0, AudioProvider.toPcm(0.0f));
+        assertEquals(16383, AudioProvider.toPcm(0.5f));
+        assertEquals(Short.MAX_VALUE, AudioProvider.toPcm(1.0f));
+    }
+}