TatumQuantizationFitVisualization.cpp

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#include "MirFakes.h"
#include "MirTestUtils.h"
#include "MusicInformationRetrieval.h"
#include "WavMirAudioReader.h"
 
#include <catch2/catch.hpp>
#include <fstream>
 
namespace MIR
{
TEST_CASE("TatumQuantizationFitVisualization")
{
   // This test produces python files containing data. Besides being useful for
   // debugging, after you have run this, you can run
   // `visualize_debug_output.py` to visualize the working of the algorithm, or
   // `visualize_post-processed_STFT.py` to visualize the STFT used to produce
   // the ODF.
 
   if (!runLocally)
      return;
 
   const auto wavFile =
      std::string { CMAKE_CURRENT_SOURCE_DIR } +
      "/benchmarking-dataset/loops/Acoustic Loop Lucaz Collab 116BPM.wav.mp3";
   const WavMirAudioReader audio { wavFile };
   QuantizationFitDebugOutput debugOutput;
   const auto result = GetMusicalMeterFromSignal(
      audio, FalsePositiveTolerance::Lenient, nullptr, &debugOutput);
 
   std::ofstream debug_output_module {
      std::string(CMAKE_CURRENT_SOURCE_DIR) +
      "/TatumQuantizationFitVisualization/debug_output.py"
   };
   debug_output_module << "wavFile = \"" << wavFile << "\"\n";
   debug_output_module << "odfSr = " << debugOutput.odfSr << "\n";
   debug_output_module << "audioFileDuration = "
                       << debugOutput.audioFileDuration << "\n";
   debug_output_module << "score = " << debugOutput.score << "\n";
   debug_output_module << "tatumRate = "
                       << 60. * debugOutput.tatumQuantization.numDivisions /
                             debugOutput.audioFileDuration
                       << "\n";
   debug_output_module << "bpm = " << (result.has_value() ? result->bpm : 0.)
                       << "\n";
   debug_output_module << "lag = " << debugOutput.tatumQuantization.lag << "\n";
   debug_output_module << "odf_peak_indices = [";
   std::for_each(
      debugOutput.odfPeakIndices.begin(), debugOutput.odfPeakIndices.end(),
      [&](int i) { debug_output_module << i << ","; });
   debug_output_module << "]\n";
   PrintPythonVector(debug_output_module, debugOutput.odf, "odf");
   PrintPythonVector(debug_output_module, debugOutput.rawOdf, "rawOdf");
   PrintPythonVector(
      debug_output_module, debugOutput.movingAverage, "movingAverage");
   PrintPythonVector(
      debug_output_module, debugOutput.odfAutoCorr, "odfAutoCorr");
   PrintPythonVector(
      debug_output_module, debugOutput.odfAutoCorrPeakIndices,
      "odfAutoCorrPeakIndices");
 
   std::ofstream stft_log_module {
      std::string { CMAKE_CURRENT_SOURCE_DIR } +
      "/TatumQuantizationFitVisualization/stft_log.py"
   };
   stft_log_module << "wavFile = \"" << wavFile << "\"\n";
   stft_log_module << "sampleRate = " << audio.GetSampleRate() << "\n";
   stft_log_module << "frameRate = " << debugOutput.odfSr << "\n";
   stft_log_module << "stft = [";
   std::for_each(
      debugOutput.postProcessedStft.begin(),
      debugOutput.postProcessedStft.end(), [&](const auto& row) {
         stft_log_module << "[";
         std::for_each(row.begin(), row.end(), [&](float x) {
            stft_log_module << x << ",";
         });
         stft_log_module << "],";
      });
   stft_log_module << "]\n";
}
} // namespace MIR