add flex decoder menu entry and fix pocsag decoding

decoder_modules/pager_decoder/src/pocsag/decoder.h

@@ -1,28 +1,107 @@
 #pragma once
 #include "../decoder.h"
+#include <signal_path/vfo_manager.h>
 #include <utils/optionlist.h>
 #include <gui/widgets/symbol_diagram.h>
 #include <gui/style.h>
+#include <dsp/sink/handler_sink.h>
+#include "dsp.h"
+#include "pocsag.h"
+
+const char* msgTypes[] = {
+    "Numeric",
+    "Unknown (0b01)",
+    "Unknown (0b10)",
+    "Alphanumeric",
+};
 
 class POCSAGDecoder : public Decoder {
 public:
-    POCSAGDecoder() : diag(0.6, 2400) {
+    POCSAGDecoder(const std::string& name, VFOManager::VFO* vfo) : diag(0.6, 2400) {
+        this->name = name;
+        this->vfo = vfo;
+
         // Define baudrate options
         baudrates.define(512, "512 Baud", 512);
         baudrates.define(1200, "1200 Baud", 1200);
         baudrates.define(2400, "2400 Baud", 2400);
+
+        // Init DSP
+        vfo->setBandwidthLimits(12500, 12500, true);
+        vfo->setSampleRate(24000, 12500);
+        dsp.init(vfo->output, 24000, 2400);
+        reshape.init(&dsp.soft, 2400.0, (2400 / 30.0) - 2400.0);
+        dataHandler.init(&dsp.out, _dataHandler, this);
+        diagHandler.init(&reshape.out, _diagHandler, this);
+
+        // Init decoder
+        decoder.onMessage.bind(&POCSAGDecoder::messageHandler, this);
+    }
+
+    ~POCSAGDecoder() {
+        stop();
     }
 
     void showMenu() {
         ImGui::LeftLabel("Baudrate");
         ImGui::FillWidth();
-        if (ImGui::Combo(("##pager_decoder_proto_" + name).c_str(), &brId, baudrates.txt)) {
+        if (ImGui::Combo(("##pager_decoder_pocsag_br_" + name).c_str(), &brId, baudrates.txt)) {
             // TODO
         }
+
+        ImGui::FillWidth();
+        diag.draw();
+    }
+
+    void setVFO(VFOManager::VFO* vfo) {
+        this->vfo = vfo;
+        vfo->setBandwidthLimits(12500, 12500, true);
+        vfo->setSampleRate(24000, 12500);
+        dsp.setInput(vfo->output);
+    }
+
+    void start() {
+        flog::debug("POCSAG start");
+        dsp.start();
+        reshape.start();
+        dataHandler.start();
+        diagHandler.start();
+    }
+
+    void stop() {
+        flog::debug("POCSAG stop");
+        dsp.stop();
+        reshape.stop();
+        dataHandler.stop();
+        diagHandler.stop();
     }
 
 private:
+    static void _dataHandler(uint8_t* data, int count, void* ctx) {
+        POCSAGDecoder* _this = (POCSAGDecoder*)ctx;
+        _this->decoder.process(data, count);
+    }
+
+    static void _diagHandler(float* data, int count, void* ctx) {
+        POCSAGDecoder* _this = (POCSAGDecoder*)ctx;
+        float* buf = _this->diag.acquireBuffer();
+        memcpy(buf, data, count * sizeof(float));
+        _this->diag.releaseBuffer();
+    }
+
+    void messageHandler(pocsag::Address addr, pocsag::MessageType type, const std::string& msg) {
+        flog::debug("[{}]: '{}'", (uint32_t)addr, msg);
+    }
+
     std::string name;
+    VFOManager::VFO* vfo;
+
+    POCSAGDSP dsp;
+    dsp::buffer::Reshaper<float> reshape;
+    dsp::sink::Handler<uint8_t> dataHandler;
+    dsp::sink::Handler<float> diagHandler;
+
+    pocsag::Decoder decoder;
 
     ImGui::SymbolDiagram diag;
 

decoder_modules/pager_decoder/src/pocsag/dsp.h

@@ -11,7 +11,7 @@
 #include <dsp/digital/binary_slicer.h>
 #include <dsp/routing/doubler.h>
 
-class POCSAGDSP : dsp::Processor<dsp::complex_t, uint8_t> {
+class POCSAGDSP : public dsp::Processor<dsp::complex_t, uint8_t> {
     using base_type = dsp::Processor<dsp::complex_t, uint8_t>;
 public:
     POCSAGDSP() {}