111 lines
2.8 KiB
C++
111 lines
2.8 KiB
C++
// Copyright (c) Charles J. Cliffe
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// SPDX-License-Identifier: GPL-2.0+
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#include "ModemQAM.h"
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ModemQAM::ModemQAM() : ModemDigital() {
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demodQAM4 = modem_create(LIQUID_MODEM_QAM4);
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demodQAM8 = modem_create(LIQUID_MODEM_QAM8);
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demodQAM16 = modem_create(LIQUID_MODEM_QAM16);
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demodQAM32 = modem_create(LIQUID_MODEM_QAM32);
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demodQAM64 = modem_create(LIQUID_MODEM_QAM64);
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demodQAM128 = modem_create(LIQUID_MODEM_QAM128);
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demodQAM256 = modem_create(LIQUID_MODEM_QAM256);
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demodQAM = demodQAM4;
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cons = 4;
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}
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ModemBase *ModemQAM::factory() {
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return new ModemQAM;
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}
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std::string ModemQAM::getName() {
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return "QAM";
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}
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ModemQAM::~ModemQAM() {
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modem_destroy(demodQAM4);
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modem_destroy(demodQAM8);
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modem_destroy(demodQAM16);
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modem_destroy(demodQAM32);
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modem_destroy(demodQAM64);
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modem_destroy(demodQAM128);
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modem_destroy(demodQAM256);
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}
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ModemArgInfoList ModemQAM::getSettings() {
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ModemArgInfoList args;
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ModemArgInfo consArg;
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consArg.key = "cons";
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consArg.name = "Constellation";
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consArg.description = "Modem Constellation Pattern";
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consArg.value = std::to_string(cons);
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consArg.type = ModemArgInfo::STRING;
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std::vector<std::string> consOpts;
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consOpts.push_back("4");
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consOpts.push_back("8");
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consOpts.push_back("16");
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consOpts.push_back("32");
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consOpts.push_back("64");
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consOpts.push_back("128");
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consOpts.push_back("256");
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consArg.options = consOpts;
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args.push_back(consArg);
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return args;
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}
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void ModemQAM::writeSetting(std::string setting, std::string value) {
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if (setting == "cons") {
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int newCons = std::stoi(value);
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updateDemodulatorCons(newCons);
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}
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}
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std::string ModemQAM::readSetting(std::string setting) {
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if (setting == "cons") {
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return std::to_string(cons);
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}
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return "";
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}
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void ModemQAM::updateDemodulatorCons(int cons) {
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this->cons = cons;
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switch (cons) {
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case 4:
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demodQAM = demodQAM4;
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break;
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case 8:
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demodQAM = demodQAM8;
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break;
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case 16:
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demodQAM = demodQAM16;
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break;
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case 32:
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demodQAM = demodQAM32;
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break;
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case 64:
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demodQAM = demodQAM64;
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break;
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case 128:
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demodQAM = demodQAM128;
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break;
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case 256:
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demodQAM = demodQAM256;
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break;
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}
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}
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void ModemQAM::demodulate(ModemKit *kit, ModemIQData *input, AudioThreadInput *audioOut) {
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ModemKitDigital *dkit = (ModemKitDigital *)kit;
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digitalStart(dkit, demodQAM, input);
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for (size_t i = 0, bufSize = input->data.size(); i < bufSize; i++) {
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modem_demodulate(demodQAM, input->data[i], &demodOutputDataDigital[i]);
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}
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updateDemodulatorLock(demodQAM, 0.5f);
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digitalFinish(dkit, demodQAM);
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}
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