CubicSDR/src/modules/modem/digital/ModemAPSK.cpp

#include "ModemAPSK.h"

ModemAPSK::ModemAPSK() {
    demodAPSK4 = modem_create(LIQUID_MODEM_APSK4);
    demodAPSK8 = modem_create(LIQUID_MODEM_APSK8);
    demodAPSK16 = modem_create(LIQUID_MODEM_APSK16);
    demodAPSK32 = modem_create(LIQUID_MODEM_APSK32);
    demodAPSK64 = modem_create(LIQUID_MODEM_APSK64);
    demodAPSK128 = modem_create(LIQUID_MODEM_APSK128);
    demodAPSK256 = modem_create(LIQUID_MODEM_APSK256);
    demodulatorCons.store(4);
    currentDemodCons.store(0);
    updateDemodulatorCons(4);
}

Modem *ModemAPSK::factory() {
    return new ModemAPSK;
}

ModemAPSK::~ModemAPSK() {
    modem_destroy(demodAPSK4);
    modem_destroy(demodAPSK8);
    modem_destroy(demodAPSK16);
    modem_destroy(demodAPSK32);
    modem_destroy(demodAPSK64);
    modem_destroy(demodAPSK128);
    modem_destroy(demodAPSK256);
}

void ModemAPSK::updateDemodulatorCons(int cons) {
    if (currentDemodCons.load() != cons) {
        currentDemodCons = cons;
        switch (demodulatorCons.load()) {
            case 2:
                demodAPSK = demodAPSK4;
                updateDemodulatorCons(4);
                break;
            case 4:
                demodAPSK = demodAPSK4;
                updateDemodulatorCons(4);
                break;
            case 8:
                demodAPSK = demodAPSK8;
                updateDemodulatorCons(8);
                break;
            case 16:
                demodAPSK = demodAPSK16;
                updateDemodulatorCons(16);
                break;
            case 32:
                demodAPSK = demodAPSK32;
                updateDemodulatorCons(32);
                break;
            case 64:
                demodAPSK = demodAPSK64;
                updateDemodulatorCons(64);
                break;
            case 128:
                demodAPSK = demodAPSK128;
                updateDemodulatorCons(128);
                break;
            case 256:
                demodAPSK = demodAPSK256;
                updateDemodulatorCons(256);
                break;
            default:
                demodAPSK = demodAPSK4;
                break;
        }
    }
}

void ModemAPSK::demodulate(ModemKit *kit, ModemIQData *input, AudioThreadInput *audioOut) {
    ModemKitDigital *dkit = (ModemKitDigital *)kit;
    
    digitalStart(dkit, demodAPSK, input);
    
    for (int i = 0, bufSize = input->data.size(); i < bufSize; i++) {
        modem_demodulate(demodAPSK, input->data[i], &demodOutputDataDigital[i]);
    }
    
    updateDemodulatorLock(demodAPSK, 0.005f);
    
    digitalFinish(dkit, demodAPSK);
}