Add tempo cnn extractor

src/examples/standard_tempocnn.cpp

@@ -0,0 +1,100 @@
+/*
+ * Copyright (C) 2006-2021  Music Technology Group - Universitat Pompeu Fabra
+ *
+ * This file is part of Essentia
+ *
+ * Essentia is free software: you can redistribute it and/or modify it under
+ * the terms of the GNU Affero General Public License as published by the Free
+ * Software Foundation (FSF), either version 3 of the License, or (at your
+ * option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the Affero GNU General Public License
+ * version 3 along with this program.  If not, see http://www.gnu.org/licenses/
+ */
+
+#include <iostream>
+#include <fstream>
+#include <essentia/algorithmfactory.h>
+#include <essentia/pool.h>
+#include "credit_libav.h"
+using namespace std;
+using namespace essentia;
+using namespace standard;
+
+int main(int argc, char* argv[]) {
+
+  if (argc != 4) {
+    cout << "Error: incorrect number of arguments." << endl;
+    cout << "Usage: " << argv[0] << " audio_input output_file graph_file" << endl;
+    creditLibAV();
+    exit(1);
+  }
+
+  string audioFilename = argv[1];
+  string outputFilename = argv[2];
+
+  // define graphFilePath
+  string graphFilePath = argv[3];
+
+  // register the algorithms in the factory(ies)
+  essentia::init();
+
+  Pool pool;
+
+  /////// PARAMS //////////////
+  Real sampleRate = 11025.0;
+  int resampleQuality = 4;
+
+  AlgorithmFactory& factory = AlgorithmFactory::instance();
+
+  Algorithm* audioLoader = factory.create("MonoLoader",
+                                          "filename", audioFilename,
+                                          "sampleRate", sampleRate,
+                                          "resampleQuality", resampleQuality);
+
+  Algorithm* tempoCNN = factory.create("TempoCNN",
+                                        "graphFilename", graphFilePath);
+
+  // inputs and outputs
+  vector<Real> audio;
+  Real globalTempo;
+  vector<Real> localTempo;
+  vector<Real> localTempoProbabilities;
+
+  // process
+  audioLoader->output("audio").set(audio);
+  audioLoader->compute();
+
+  tempoCNN->input("audio").set(audio);
+  tempoCNN->output("globalTempo").set(globalTempo);
+  tempoCNN->output("localTempo").set(localTempo);
+  tempoCNN->output("localTempoProbabilities").set(localTempoProbabilities);
+  tempoCNN->compute();
+
+  pool.add("tempoCNN.global_tempo", globalTempo);
+  pool.add("tempoCNN.localTempo", localTempo);
+  pool.add("tempoCNN.localTempoProbabilities", localTempoProbabilities);
+
+  // output results
+  cout << "------------- writing results to file " << outputFilename << " -------------" << endl;
+
+  Algorithm* json = factory.create("YamlOutput",
+                                    "filename", outputFilename,
+                                    "format", "json");
+  json->input("pool").set(pool);
+  json->compute();
+
+  // cleanup
+  delete audioLoader;
+  delete tempoCNN;
+  delete json;
+
+  essentia::shutdown();
+
+  return 0;
+}

src/examples/wscript

@@ -43,6 +43,7 @@ example_sources_fileio = [
     ('standard_loudnessebur128_double_input', ),
     ('standard_saturationdetector', ),
     ('standard_snr', ),
+    ('standard_tempocnn',),
     ('standard_welch', ),
     ('streaming_humdetector', ),