/// ------------------------------------------------------------------------------------
public static Dictionary <double, double> SegmentAudioFile(string audioFile,
int silenceThreshold, float clusterDuration, int clusterThreshold,
float[] onsetDetectionValues)
{
var rubyScript =
FileLocator.GetFileDistributedWithApplication("AutoSegmenter", "rubyscripts", "segmenter.rb");
var libAubioFolder = Path.GetDirectoryName(
FileLocator.GetFileDistributedWithApplication("AutoSegmenter", "libaudio", "aubioonset.exe"));
if (!libAubioFolder.EndsWith(Path.DirectorySeparatorChar.ToString(CultureInfo.InvariantCulture)))
{
libAubioFolder += Path.DirectorySeparatorChar;
}
var runtime = Ruby.CreateRuntime();
var engine = runtime.GetEngine("rb");
var paths = engine.GetSearchPaths().ToList();
paths.Add(Path.GetDirectoryName(rubyScript));
engine.SetSearchPaths(paths);
engine.Runtime.ExecuteFile(rubyScript);
var segmenterObj = engine.Runtime.Globals.GetVariable("Segmenter");
var segmenterInst = engine.Operations.CreateInstance(segmenterObj);
engine.Operations.InvokeMember(segmenterInst, "initFromCSharp",
silenceThreshold, clusterDuration, clusterThreshold, onsetDetectionValues);
IronRuby.Builtins.Hash returnValues = engine.Operations.InvokeMember(segmenterInst,
"processFromCSharp", libAubioFolder, audioFile);
return(returnValues.ToDictionary(kvp => (double)kvp.Key, kvp => (double)kvp.Value));
}
protected static IronRuby.Builtins.Hash ParseObject(char[] json, ref int index, ref bool success)
{
IronRuby.Builtins.Hash table = RhoRuby.createHash();
int token;
// {
NextToken(json, ref index);
bool done = false;
while (!done)
{
token = LookAhead(json, index);
if (token == TOKEN_NONE)
{
success = false;
return(null);
}
else if (token == TOKEN_COMMA)
{
NextToken(json, ref index);
}
else if (token == TOKEN_CURLY_CLOSE)
{
NextToken(json, ref index);
return(table);
}
else
{
// name
object name = ParseString(json, ref index, ref success);
if (!success)
{
success = false;
return(null);
}
// :
token = NextToken(json, ref index);
if (token != TOKEN_COLON)
{
success = false;
return(null);
}
// value
object value = ParseValue(json, ref index, ref success);
if (!success)
{
success = false;
return(null);
}
table[name] = value;
}
}
return(table);
}
