protected virtual bool TryParseDuration(BassSkipSilenceStreamAdvisorBehaviour behaviour, string value, out TimeSpan duration)
{
if (string.IsNullOrEmpty(value))
{
duration = TimeSpan.Zero;
return(false);
}
var parts = value.Split(new[] { ':' }, 2);
if (parts.Length != 2)
{
duration = TimeSpan.Zero;
return(false);
}
var threshold = default(int);
if (!int.TryParse(parts[0], out threshold) || behaviour.Threshold != threshold)
{
Logger.Write(typeof(BassSkipSilenceStreamAdvisor), LogLevel.Warn, "Ignoring lead in/out value \"{0}\": Invalid threshold.", parts[0]);
duration = TimeSpan.Zero;
return(false);
}
if (!TimeSpan.TryParse(parts[1], out duration))
{
Logger.Write(typeof(BassSkipSilenceStreamAdvisor), LogLevel.Warn, "Ignoring lead in/out value \"{0}\": Invalid duration.", parts[1]);
duration = TimeSpan.Zero;
return(false);
}
return(true);
}
public BassSkipSilenceStreamComponent(BassSkipSilenceStreamAdvisorBehaviour behaviour, BassOutputStream stream)
{
this.Behaviour = behaviour;
this.Rate = behaviour.Output.Rate;
this.Channels = stream.Channels;
this.Flags = BassFlags.Decode;
if (this.Behaviour.Output.Float)
{
this.Flags |= BassFlags.Float;
}
}
protected virtual bool TryGetMetaData(BassSkipSilenceStreamAdvisorBehaviour behaviour, PlaylistItem playlistItem, out TimeSpan leadIn, out TimeSpan leadOut)
{
if (playlistItem.MetaDatas == null)
{
//This shouldn't happen.
leadIn = default(TimeSpan);
leadOut = default(TimeSpan);
return(false);
}
Logger.Write(typeof(BassSkipSilenceStreamAdvisor), LogLevel.Debug, "Attempting to fetch lead in/out for file \"{0}\" from meta data.", playlistItem.FileName);
var leadInMetaDataItem = default(MetaDataItem);
var leadOutMetaDataItem = default(MetaDataItem);
lock (playlistItem.MetaDatas)
{
var metaDatas = playlistItem.MetaDatas.ToDictionary(
metaDataItem => metaDataItem.Name,
StringComparer.OrdinalIgnoreCase
);
metaDatas.TryGetValue(CustomMetaData.LeadIn, out leadInMetaDataItem);
metaDatas.TryGetValue(CustomMetaData.LeadOut, out leadOutMetaDataItem);
if (leadInMetaDataItem == null && leadOutMetaDataItem == null)
{
Logger.Write(typeof(BassSkipSilenceStreamAdvisor), LogLevel.Debug, "Lead in/out meta data does not exist for file \"{0}\".", playlistItem.FileName);
leadIn = default(TimeSpan);
leadOut = default(TimeSpan);
return(false);
}
}
if (leadInMetaDataItem == null)
{
leadIn = TimeSpan.Zero;
}
else if (!this.TryParseDuration(behaviour, leadInMetaDataItem.Value, out leadIn))
{
Logger.Write(typeof(BassSkipSilenceStreamAdvisor), LogLevel.Debug, "Lead in meta data value \"{0}\" for file \"{1}\" is not valid.", leadInMetaDataItem.Value, playlistItem.FileName);
leadIn = default(TimeSpan);
leadOut = default(TimeSpan);
return(false);
}
if (leadOutMetaDataItem == null)
{
leadOut = TimeSpan.Zero;
}
else if (!this.TryParseDuration(behaviour, leadOutMetaDataItem.Value, out leadOut))
{
Logger.Write(typeof(BassSkipSilenceStreamAdvisor), LogLevel.Debug, "Lead out meta data value \"{0}\" for file \"{1}\" is not valid.", leadOutMetaDataItem.Value, playlistItem.FileName);
leadIn = default(TimeSpan);
leadOut = default(TimeSpan);
return(false);
}
Logger.Write(typeof(BassSkipSilenceStreamAdvisor), LogLevel.Debug, "Successfully fetched lead in/out from meta data for file \"{0}\": {1}/{2}", playlistItem.FileName, leadIn, leadOut);
return(true);
}
