add ryfi decoder module

decoder_modules/ryfi_decoder/src/ryfi/conv_codec.h

@@ -0,0 +1,70 @@
+#pragma once
+#include <stdint.h>
+#include "dsp/processor.h"
+
+extern "C" {
+    #include "correct.h"
+}
+
+namespace ryfi {
+    /**
+     * RyFi Convolutional Encoder.
+    */
+    class ConvEncoder : public dsp::Processor<uint8_t, uint8_t> {
+        using base_type = dsp::Processor<uint8_t, uint8_t>;
+    public:
+        /**
+         * Create a convolutional encoder specifying an input stream.
+         * @param in Input stream.
+        */
+        ConvEncoder(dsp::stream<uint8_t>* in = NULL);
+
+        // Destructor
+        ~ConvEncoder();
+
+        /**
+         * Encode data.
+         * @param in Input bytes.
+         * @param out Output bits.
+         * @param count Number of input bytes.
+         * @return Number of output bits.
+        */
+        int encode(const uint8_t* in, uint8_t* out, int count);
+
+    private:
+        int run();
+
+        correct_convolutional* conv;
+    };
+
+    /**
+     * RyFi Convolutional Decoder.
+    */
+    class ConvDecoder : public dsp::Processor<dsp::complex_t, uint8_t> {
+        using base_type = dsp::Processor<dsp::complex_t, uint8_t>;
+    public:
+        /**
+         * Create a convolutional encoder specifying an input stream.
+         * @param in Input stream.
+        */
+        ConvDecoder(dsp::stream<dsp::complex_t>* in = NULL);
+
+        // Destructor
+        ~ConvDecoder();
+
+        /**
+         * Decode soft symbols.
+         * @param in Input soft symbols.
+         * @param out Output bytes.
+         * @param count Number of input bytes.
+         * @return Number of output bits.
+        */
+        int decode(const dsp::complex_t* in, uint8_t* out, int count);
+
+    private:
+        int run();
+
+        correct_convolutional* conv;
+        uint8_t* soft = NULL;
+    };
+}