feat: integrate RTL-TCP server support

2025-11-01 22:39:52 +08:00
parent 356738ac10
commit 5aa19ada14
379 changed files with 109413 additions and 47 deletions
--- a/android/app/src/main/cpp/dsp/downchannelizer.h
+++ b/android/app/src/main/cpp/dsp/downchannelizer.h
@@ -0,0 +1,97 @@
+///////////////////////////////////////////////////////////////////////////////////
+// Copyright (C) 2012 maintech GmbH, Otto-Hahn-Str. 15, 97204 Hoechberg, Germany //
+// written by Christian Daniel                                                   //
+// Copyright (C) 2015-2020, 2023 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/>.          //
+///////////////////////////////////////////////////////////////////////////////////
+
+#ifndef SDRBASE_DSP_DOWNCHANNELIZER_H
+#define SDRBASE_DSP_DOWNCHANNELIZER_H
+
+#include <list>
+#include <vector>
+
+#include "export.h"
+#include "dsp/inthalfbandfiltereo.h"
+
+#include "channelsamplesink.h"
+
+#define DOWNCHANNELIZER_HB_FILTER_ORDER 48
+
+class SDRBASE_API DownChannelizer : public ChannelSampleSink {
+public:
+	DownChannelizer(ChannelSampleSink* sampleSink);
+	virtual ~DownChannelizer();
+
+	virtual void feed(const SampleVector::const_iterator& begin, const SampleVector::const_iterator& end);
+
+    void setDecimation(unsigned int log2Decim, unsigned int filterChainHash);         //!< Define channelizer with decimation factor and filter chain definition
+    void setChannelization(int requestedSampleRate, qint64 requestedCenterFrequency); //!< Define channelizer with requested sample rate and center frequency (shift in the baseband)
+    void setBasebandSampleRate(int basebandSampleRate, bool decim = false);           //!< decim: true => use direct decimation false => use channel configuration
+	int getBasebandSampleRate() const { return m_basebandSampleRate; }
+    int getChannelSampleRate() const { return m_channelSampleRate; }
+	int getChannelFrequencyOffset() const { return m_channelFrequencyOffset; }
+
+protected:
+	struct FilterStage {
+		enum Mode {
+			ModeCenter,
+			ModeLowerHalf,
+			ModeUpperHalf
+		};
+
+#ifdef SDR_RX_SAMPLE_24BIT
+        typedef bool (IntHalfbandFilterEO<qint64, qint64, DOWNCHANNELIZER_HB_FILTER_ORDER, true>::*WorkFunction)(Sample* s);
+        IntHalfbandFilterEO<qint64, qint64, DOWNCHANNELIZER_HB_FILTER_ORDER, true>* m_filter;
+#else
+        typedef bool (IntHalfbandFilterEO<qint32, qint32, DOWNCHANNELIZER_HB_FILTER_ORDER, true>::*WorkFunction)(Sample* s);
+        IntHalfbandFilterEO<qint32, qint32, DOWNCHANNELIZER_HB_FILTER_ORDER, true>* m_filter;
+#endif
+
+		WorkFunction m_workFunction;
+		Mode m_mode;
+		bool m_sse;
+
+		FilterStage(Mode mode);
+		~FilterStage();
+
+		bool work(Sample* sample)
+		{
+			return (m_filter->*m_workFunction)(sample);
+		}
+	};
+	typedef std::list<FilterStage*> FilterStages;
+	FilterStages m_filterStages;
+    bool m_filterChainSetMode;
+	ChannelSampleSink* m_sampleSink; //!< Demodulator
+    int m_basebandSampleRate;
+	int m_requestedOutputSampleRate;
+	int m_requestedCenterFrequency;
+	int m_channelSampleRate;
+    int m_channelFrequencyOffset;
+    unsigned int m_log2Decim;
+    unsigned int m_filterChainHash;
+	SampleVector m_sampleBuffer;
+
+	void applyChannelization();
+    void applyDecimation();
+    static Real channelMinSpace(Real sigStart, Real sigEnd, Real chanStart, Real chanEnd);
+	Real createFilterChain(Real sigStart, Real sigEnd, Real chanStart, Real chanEnd);
+    double setFilterChain(const std::vector<unsigned int>& stageIndexes);
+	void freeFilterChain();
+	void debugFilterChain();
+};
+
+#endif // SDRBASE_DSP_DOWNCHANNELIZER_H