feat: integrate RTL-TCP server support

android/app/src/main/cpp/dsp/devicesamplestatic.h

@@ -0,0 +1,83 @@
+///////////////////////////////////////////////////////////////////////////////////
+// Copyright (C) 2019-2020 Edouard Griffiths, F4EXB <f4exb06@gmail.com>          //
+//                                                                               //
+// 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 as 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 V3 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/>.          //
+///////////////////////////////////////////////////////////////////////////////////
+
+#include <stdint.h>
+
+#include "export.h"
+
+class SDRBASE_API DeviceSampleStatic
+{
+public:
+    typedef enum {
+        FC_POS_INFRA = 0,
+        FC_POS_SUPRA,
+        FC_POS_CENTER
+    } fcPos_t;
+
+    typedef enum {
+        FSHIFT_STD = 0, // Standard Rx independent
+        FSHIFT_TXSYNC   // Follows same scheme as Tx
+    } FrequencyShiftScheme;
+
+    static int64_t calculateSourceDeviceCenterFrequency(
+            uint64_t centerFrequency,
+            int64_t transverterDeltaFrequency,
+            int log2Decim,
+            fcPos_t fcPos,
+            uint32_t devSampleRate,
+            FrequencyShiftScheme frequencyShiftScheme,
+            bool transverterMode = false
+    );
+
+    static int64_t calculateSourceCenterFrequency(
+            uint64_t deviceCenterFrequency,
+            int64_t transverterDeltaFrequency,
+            int log2Decim,
+            fcPos_t fcPos,
+            uint32_t devSampleRate,
+            FrequencyShiftScheme frequencyShiftScheme,
+            bool transverterMode = false
+    );
+
+    static int calculateSourceFrequencyShift(
+            int log2Decim,
+            fcPos_t fcPos,
+            uint32_t devSampleRate,
+            FrequencyShiftScheme frequencyShiftScheme
+    );
+
+    static int64_t calculateSinkDeviceCenterFrequency(
+            uint64_t centerFrequency,
+            int64_t transverterDeltaFrequency,
+            int log2Interp,
+            fcPos_t fcPos,
+            uint32_t devSampleRate,
+            bool transverterMode = false);
+
+    static int64_t calculateSinkCenterFrequency(
+            uint64_t deviceCenterFrequency,
+            int64_t transverterDeltaFrequency,
+            int log2Interp,
+            fcPos_t fcPos,
+            uint32_t devSampleRate,
+            bool transverterMode = false);
+
+    static int calculateSinkFrequencyShift(
+            int log2Interp,
+            fcPos_t fcPos,
+            uint32_t devSampleRate);
+};