#2542 bladeRF SDR tuner support (#2543)

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

src/test/java/io/github/dsheirer/source/tuner/bladerf/BladeRfTunerTest.java

@@ -0,0 +1,98 @@
+/*
+ * *****************************************************************************
+ * 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.source.tuner.bladerf;
+
+import static org.junit.jupiter.api.Assertions.assertArrayEquals;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertInstanceOf;
+
+import com.fasterxml.jackson.databind.DeserializationFeature;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import io.github.dsheirer.bladerf.GainMode;
+import io.github.dsheirer.source.tuner.TunerClass;
+import io.github.dsheirer.source.tuner.TunerType;
+import io.github.dsheirer.source.tuner.configuration.TunerConfiguration;
+import java.util.List;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Tests for the parts of the bladeRF tuner that don't require a device.
+ */
+class BladeRfTunerTest
+{
+    private static final float SCALE = 2048.0f;
+
+    @Test
+    void lookupFindsEachUsbProduct()
+    {
+        assertEquals(TunerClass.BLADERF, TunerClass.lookup((short)0x2CF0, (short)0x5250));
+        assertEquals(TunerClass.BLADERF, TunerClass.lookup((short)0x2CF0, (short)0x5246));
+        assertEquals(TunerClass.BLADERF, TunerClass.lookup((short)0x1D50, (short)0x6066));
+    }
+
+    @Test
+    void scalesSamples()
+    {
+        short[] samples = {2047, -2048, 1024, -1024};
+
+        assertArrayEquals(new float[]{2047 / SCALE, -1.0f, 0.5f, -0.5f}, BladeRfTunerController.scale(samples));
+    }
+
+    @Test
+    void sampleRatesAreLimitedByTheDevice()
+    {
+        List<BladeRfSampleRate> rates = BladeRfSampleRate.getRates(4_000_000);
+
+        assertEquals(List.of(BladeRfSampleRate.RATE_1_25, BladeRfSampleRate.RATE_2_5), rates);
+        assertEquals(BladeRfSampleRate.RATE_2_5, BladeRfSampleRate.getClosest(rates, BladeRfSampleRate.DEFAULT.getRate()));
+        assertEquals(BladeRfSampleRate.RATE_1_25, BladeRfSampleRate.getClosest(rates, 1));
+    }
+
+    @Test
+    void sampleRatesDivideIntoPolyphaseChannels()
+    {
+        for(BladeRfSampleRate rate : BladeRfSampleRate.values())
+        {
+            assertEquals(0, rate.getRate() % 50_000, rate.toString());
+        }
+    }
+
+    @Test
+    void configurationSurvivesSerialization() throws Exception
+    {
+        BladeRfTunerConfiguration configuration = new BladeRfTunerConfiguration("test");
+        configuration.setSampleRate(BladeRfSampleRate.RATE_5_0.getRate());
+        configuration.setGainMode(GainMode.SLOW_ATTACK_AGC);
+        configuration.setGain(12);
+        configuration.setBiasT(true);
+
+        ObjectMapper mapper = new ObjectMapper();
+        mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
+        String json = mapper.writeValueAsString(configuration);
+        TunerConfiguration restored = mapper.readValue(json, TunerConfiguration.class);
+
+        BladeRfTunerConfiguration bladeRf = assertInstanceOf(BladeRfTunerConfiguration.class, restored);
+        assertEquals(TunerType.BLADERF, bladeRf.getTunerType());
+        assertEquals(BladeRfSampleRate.RATE_5_0.getRate(), bladeRf.getSampleRate());
+        assertEquals(GainMode.SLOW_ATTACK_AGC, bladeRf.getGainMode());
+        assertEquals(12, bladeRf.getGain());
+        assertEquals(true, bladeRf.isBiasT());
+        assertEquals("test", bladeRf.getUniqueID());
+    }
+}