add sddc source prototype + add new ATV decoder + fix windows builds

decoder_modules/atv_decoder/src/amplitude.h

@@ -0,0 +1,65 @@
+#pragma once
+#include <dsp/processor.h>
+#include <dsp/math/fast_atan2.h>
+#include <dsp/math/hz_to_rads.h>
+#include <dsp/math/normalize_phase.h>
+
+namespace dsp::demod {
+    class Amplitude : public Processor<complex_t, float> {
+        using base_type = Processor<complex_t, float>;
+    public:
+        Amplitude() {}
+
+        Amplitude(stream<complex_t>* in, double deviation) { init(in, deviation); }
+
+        Amplitude(stream<complex_t>* in, double deviation, double samplerate) { init(in, deviation, samplerate); }
+
+        
+        virtual void init(stream<complex_t>* in, double deviation) {
+            _invDeviation = 1.0 / deviation;
+            base_type::init(in);
+        }
+
+        virtual void init(stream<complex_t>* in, double deviation, double samplerate) {
+            init(in, math::hzToRads(deviation, samplerate));
+        }
+
+        void setDeviation(double deviation) {
+            assert(base_type::_block_init);
+            std::lock_guard<std::recursive_mutex> lck(base_type::ctrlMtx);
+            _invDeviation = 1.0 / deviation;
+        }
+
+        void setDeviation(double deviation, double samplerate) {
+            assert(base_type::_block_init);
+            std::lock_guard<std::recursive_mutex> lck(base_type::ctrlMtx);
+            _invDeviation = 1.0 / math::hzToRads(deviation, samplerate);
+        }
+
+        inline int process(int count, complex_t* in, float* out) {
+            volk_32fc_magnitude_32f(out, (lv_32fc_t*)in, count);
+            return count;
+        }
+
+        void reset() {
+            assert(base_type::_block_init);
+            std::lock_guard<std::recursive_mutex> lck(base_type::ctrlMtx);
+            phase = 0.0f;
+        }
+
+        int run() {
+            int count = base_type::_in->read();
+            if (count < 0) { return -1; }
+
+            process(count, base_type::_in->readBuf, base_type::out.writeBuf);
+
+            base_type::_in->flush();
+            if (!base_type::out.swap(count)) { return -1; }
+            return count;
+        }
+
+    protected:
+        float _invDeviation;
+        float phase = 0.0f;
+    };
+}