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sdrangel/plugins/channelrx/demoddatv/ldpctool/mods_handler.cpp
2021-03-07 00:36:48 +01:00

65 lines
2.2 KiB
C++

/*
LDPC modulations handler
Copyright 2018 Ahmet Inan <xdsopl@gmail.com>
*/
#include <cstring>
#include <cmath>
#include <algorithm>
#include "psk.h"
#include "qam.h"
#include "modulation.h"
#include "testbench.h"
using namespace ldpctool;
template <typename TYPE, typename CODE>
constexpr typename TYPE::value_type PhaseShiftKeying<4, TYPE, CODE>::rcp_sqrt_2;
template <typename TYPE, typename CODE>
constexpr TYPE PhaseShiftKeying<8, TYPE, CODE>::rot_acw;
template <typename TYPE, typename CODE>
constexpr TYPE PhaseShiftKeying<8, TYPE, CODE>::rot_cw;
template <typename TYPE, typename CODE>
constexpr typename TYPE::value_type QuadratureAmplitudeModulation<16, TYPE, CODE>::AMP;
template <typename TYPE, typename CODE>
constexpr typename TYPE::value_type QuadratureAmplitudeModulation<64, TYPE, CODE>::AMP;
template <typename TYPE, typename CODE>
constexpr typename TYPE::value_type QuadratureAmplitudeModulation<256, TYPE, CODE>::AMP;
template <typename TYPE, typename CODE>
constexpr typename TYPE::value_type QuadratureAmplitudeModulation<1024, TYPE, CODE>::AMP;
template <int LEN>
ModulationInterface<complex_type, code_type> *create_modulation(char *name)
{
if (!strcmp(name, "BPSK"))
return new Modulation<PhaseShiftKeying<2, complex_type, code_type>, LEN>();
if (!strcmp(name, "QPSK"))
return new Modulation<PhaseShiftKeying<4, complex_type, code_type>, LEN / 2>();
if (!strcmp(name, "8PSK"))
return new Modulation<PhaseShiftKeying<8, complex_type, code_type>, LEN / 3>();
if (!strcmp(name, "QAM16"))
return new Modulation<QuadratureAmplitudeModulation<16, complex_type, code_type>, LEN / 4>();
if (!strcmp(name, "QAM64"))
return new Modulation<QuadratureAmplitudeModulation<64, complex_type, code_type>, LEN / 6>();
if (!strcmp(name, "QAM256"))
return new Modulation<QuadratureAmplitudeModulation<256, complex_type, code_type>, LEN / 8>();
if (!strcmp(name, "QAM1024"))
return new Modulation<QuadratureAmplitudeModulation<1024, complex_type, code_type>, LEN / 10>();
return 0;
}
ModulationInterface<complex_type, code_type> *create_modulation(char *name, int len)
{
switch (len) {
case 16200:
return create_modulation<16200>(name);
case 32400:
return create_modulation<32400>(name);
case 64800:
return create_modulation<64800>(name);
}
return 0;
}