Method processFile

src_cpp/yaafe-core/AudioFileProcessor.cpp:69–174

  }

  int AudioFileProcessor::processFile(Engine& engine, const std::string& filename)
  {
    {
      // check engine inputs
      vector<string> inputs = engine.getInputs();
      if (inputs.size()!=1) {
        cerr << "ERROR: dataflow must have exactly 1 root node" << endl;
        return -1;
      }
      if (inputs[0]!="audio") {
        cerr << "ERROR: root node is not 'audio' node !" << endl;
        return -2;
      }
    }

    int exitCode = 0;
    ComponentFactory* factory = ComponentFactory::instance();
    Component* reader = NULL;
    std::vector<pair<string,Component*> > writers;

    cerr << "process file " << filename << endl;
    clock_t end;
    clock_t start = clock();

    // reset engine state
    engine.reset();

    // determine audio file format and select appropriate reader
    std::string readerComponent = "";
    {
      std::string lowerFilename = filename;
      transform(lowerFilename.begin(),lowerFilename.end(),lowerFilename.begin(),::tolower);
      if (hasEnding(lowerFilename,"mp3")) {
        if (!factory->exists("MP3FileReader")) {
          cerr << "ERROR: cannot read mp3 file ! please compile yaafe with mpg123 support" << endl;
          return -4;
        }
        readerComponent = "MP3FileReader";
      } else {
        if (!factory->exists("AudioFileReader")) {
          cerr << "ERROR: please compile yaafe with libsndfile support" << endl;
          return -3;
        }
        readerComponent = "AudioFileReader";
      }
    }

    // initialize reader
    ParameterMap readerParams = engine.getInputParams("audio");
    readerParams["File"] = filename;
    reader = factory->createComponent(readerComponent);
    Ports<StreamInfo> inports;
    if (!reader->init(readerParams,inports)) {
      cerr << "ERROR: cannot initialize reader " << readerComponent << " for file " << filename << endl;
      exitCode = -6; goto exit;
    }

    // bind audio input