public void Search(List <Audio> source, Audio referenceItem, object parameters = null)
{
SimilarityOptions Options = parameters as SimilarityOptions;
if (Options == null)
{
throw new ArgumentException("Invalid options");
}
var ReferenceTempogram = referenceItem.GetData <Tempogram>();
var ReferenceVolumDescriptor = referenceItem.GetData <VolumeDescriptor>();
foreach (var Item in source)
{
var Distance = 0f;
var Tempogram = Item.GetData <Tempogram>();
if (Tempogram == null || ReferenceTempogram == null)
{
Distance += 1;
}
else
{
if (Options.LongRhythm)
{
Distance += ReferenceTempogram.LongTempogram.Distance(Tempogram.LongTempogram);
}
if (Options.ShortRhythm)
{
Distance += ReferenceTempogram.ShortTempogram.Distance(Tempogram.ShortTempogram) * 0.3f;
}
if (Options.Intensity)
{
Distance += Math.Abs(ReferenceTempogram.Intensity - Tempogram.Intensity) * 0.2f;
}
}
if (Options.VolumeDistr)
{
var VolumeDescriptor = Item.GetData <VolumeDescriptor>();
if (VolumeDescriptor == null || ReferenceVolumDescriptor == null)
{
Distance += 1f;
}
else
{
Distance += ReferenceVolumDescriptor.Distance(VolumeDescriptor);
}
}
Item.Tag = Distance;
}
source.Sort((a1, a2) => a1.Tag.CompareTo(a2.Tag));
}
public ActionResult Search(int id)
{
var trackList = new List<Track>();
if (db.Tracks.Any())
{
trackList = db.Tracks.ToList();
}
if (id < 0 || id >= ShownItems.Count)
{
return View(new List<Track>());
}
SimilarityOptions Options = new SimilarityOptions()
{
AmpEnvelope = true,
Intensity = true,
LongRhythm = true,
ShortRhythm = true,
VolumeDistr = true
};
var searchItems = ShownItems.SearchBy<SearchBySimilarity>(id, Options);
var showTrackList = new List<Track>();
foreach (var shownItem in searchItems)
{
var track = trackList.FirstOrDefault(t => t.FileName.Contains(shownItem.ShortName));
if (track != null)
{
showTrackList.Add(track);
}
}
return View(showTrackList);
}
private void findSimilarsToolStripMenuItem_Click(object sender, EventArgs e)
{
if (selectedItemIndex < 0 || selectedItemIndex >= items.Count)
return;
try
{
if (findSimilarPropertiesForm.ShowDialog() != DialogResult.OK)
return;
SimilarityOptions Options = new SimilarityOptions()
{
AmpEnvelope = findSimilarPropertiesForm.cbAmpEnvelope.Checked,
Intensity = findSimilarPropertiesForm.cbIntensity.Checked,
LongRhythm = findSimilarPropertiesForm.cbLongRhythm.Checked,
ShortRhythm = findSimilarPropertiesForm.cbShortRhythm.Checked,
VolumeDistr = findSimilarPropertiesForm.cbVolumeDistr.Checked
};
items.SearchBy<SearchBySimilarity>(selectedItemIndex, Options);
ScrollToTopLeft();
selectedItemIndex = 0;
Invalidate();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
