示例#1
0
TEST (AudioDataTest, PrependToNew) {
  KeyFinder::AudioData a;
  KeyFinder::AudioData b;

  ASSERT_NO_THROW(a.prepend(b));
  ASSERT_EQ(0, a.getChannels());
  ASSERT_EQ(0, a.getFrameRate());

  b.setChannels(1);
  b.setFrameRate(1);
  b.addToFrameCount(1);

  ASSERT_NO_THROW(a.prepend(b));
  ASSERT_EQ(1, a.getChannels());
  ASSERT_EQ(1, a.getFrameRate());
  ASSERT_EQ(1, a.getFrameCount());
}
示例#2
0
KeyFinderResultWrapper keyDetectionProcess(const AsyncFileObject& object){

  KeyFinderResultWrapper result;
  result.batchRow = object.batchRow;

  // initialise stream and decode file into it.
  KeyFinder::AudioData* audio = NULL;
  AudioFileDecoder* decoder = NULL;
  try{
    decoder = AudioFileDecoder::getDecoder();
  }catch(KeyFinder::Exception& e){
    delete decoder;
    result.errorMessage = QString(e.what().c_str());
    return result;
  }

  try{
    audio = decoder->decodeFile(object.filePath);
    delete decoder;
  }catch(KeyFinder::Exception& e){
    delete audio;
    delete decoder;
    result.errorMessage = QString(e.what().c_str());
    return result;
  }

  // make audio stream monaural ahead of downsample to reduce load
  audio->reduceToMono();

  // downsample if necessary
  if(object.prefs.getDFactor() > 1){
    Downsampler* ds = Downsampler::getDownsampler(object.prefs.getDFactor(),audio->getFrameRate(),object.prefs.getLastFreq());
    try{
      audio = ds->downsample(audio,object.prefs.getDFactor());
    }catch(KeyFinder::Exception& e){
      delete audio;
      delete ds;
      result.errorMessage = QString(e.what().c_str());
      return result;
    }
    delete ds;
  }

  KeyFinder::KeyFinder* kf = LibKeyFinderSingleton::getInstance()->getKeyFinder();
  result.core = kf->findKey(*audio, object.prefs.core);

  delete audio;

  return result;
}
示例#3
0
TEST (LowPassFilterTest, DoesntAlterAudioMetadata) {
    KeyFinder::AudioData a;
    a.setChannels(1);
    a.setFrameRate(frameRate);
    a.addToSampleCount(frameRate);

    KeyFinder::LowPassFilter* lpf = new KeyFinder::LowPassFilter(filterOrder, frameRate, cornerFrequency, filterFFT);
    KeyFinder::Workspace w;
    lpf->filter(a, w);
    delete lpf;

    ASSERT_EQ(1, a.getChannels());
    ASSERT_EQ(frameRate, a.getFrameRate());
    ASSERT_EQ(frameRate, a.getSampleCount());
}
示例#4
0
TEST (AudioDataTest, DownsamplerResamplesIntegralRelationship) {
  KeyFinder::AudioData a;
  a.setChannels(1);
  a.setFrameRate(100);
  a.addToSampleCount(10);
  for (unsigned int i = 0; i < 5; i++)
    a.setSample(i, 100.0);
  for (unsigned int i = 5; i < 10; i++)
    a.setSample(i, 500.0);

  a.downsample(5);

  ASSERT_EQ(20, a.getFrameRate());
  ASSERT_EQ(2, a.getSampleCount());
  ASSERT_FLOAT_EQ(100.0, a.getSample(0));
  ASSERT_FLOAT_EQ(500.0, a.getSample(1));
}
示例#5
0
TEST (AudioDataTest, DownsamplerResamplesSineWave) {
  unsigned int frameRate = 10000;
  unsigned int frames = frameRate * 4;
  float freq = 20;
  float magnitude = 32768.0;
  unsigned int factor = 5;

  KeyFinder::AudioData a;
  a.setChannels(1);
  a.setFrameRate(frameRate);
  a.addToSampleCount(frames);
  for (unsigned int i = 0; i < frames; i++)
    a.setSample(i, sine_wave(i, freq, frameRate, magnitude));

  a.downsample(factor);

  unsigned int newFrameRate = frameRate / factor;
  unsigned int newFrames = frames / factor;

  ASSERT_EQ(newFrameRate, a.getFrameRate());
  ASSERT_EQ(newFrames, a.getSampleCount());
  for (unsigned int i = 0; i < newFrames; i++)
    ASSERT_NEAR(sine_wave(i, freq, newFrameRate, magnitude), a.getSample(i), magnitude * 0.05);
}
示例#6
0
TEST (AudioDataTest, FrameRate) {
  KeyFinder::AudioData a;
  a.setFrameRate(44100);
  ASSERT_EQ(44100, a.getFrameRate());
  ASSERT_THROW(a.setFrameRate(0), KeyFinder::Exception);
}
示例#7
0
TEST (AudioDataTest, ConstructorWorks) {
  KeyFinder::AudioData a;
  ASSERT_EQ(0, a.getChannels());
  ASSERT_EQ(0, a.getFrameRate());
  ASSERT_EQ(0, a.getSampleCount());
}