libdabdemod provides a subsytem to demodulate a stream of complex baseband samples into OFDM symbols. The baseband symbols are can be acquired using libdabdevice for example. The library is designed to be run on a separate thread, since demodulation is a computationally very expensive process.

The demodulated symbols will be placed in a user-provided queue, which can be used to feed them to libdabdecode in order to acquire the transported payload data from a DAB/DAB+ ensemble.

#include <dabdemod.h>
#include <types/common_types.h>

#include <future>

int main(int argc, char * * argv)
  {
  using namespace dab::literals;

  dab::sample_queue_t samples{};
  dab::symbol_queue_t symbols{};

  /*
   * Asynchronously fill the sample queue
   */

  dab::demodulator demod{samples, symbols, dab::transmission_modes::kTransmissionMode1};
  auto demodRunner = std::async(std::launch::async, [&]{ demod.run(); });

  /*
   * Asynchronously process the recovered symbols
   */
  }

You first need to check out the source code and the respective submodules:

$ git clone --recursive https://github.com/Opendigitalradio/libdabdemod.git

Like the other members of the libdabXYZ family, libdabdemod uses CMake as it build environment. There are several configuration option that you can choose from when building libdabdemod:

To build the library, enter the build directory and run cmake or ccmake to configure the build environment to you liking. Afterward, you can use cmake --build . to build the library. Depending on your selection, the built library will be in the directory products/{Debug|Release}/lib. If you chose to build the documentation, the pdf will be found in dabdemod_doc/latex/refman.pdf.

You can use this library as a subproject in any CMake based project.