public IEnumerable <IDictionary <Guid, IList <MediaItemAspect> > > ExtractStubItems(IResourceAccessor mediaItemAccessor, IEnumerable <Guid> metadataExtractorIds)
{
List <IDictionary <Guid, IList <MediaItemAspect> > > stubAspects = new List <IDictionary <Guid, IList <MediaItemAspect> > >();
ICollection <IMetadataExtractor> extractors = new List <IMetadataExtractor>();
foreach (Guid extractorId in metadataExtractorIds)
{
IMetadataExtractor extractor;
if (LocalMetadataExtractors.TryGetValue(extractorId, out extractor))
{
extractors.Add(extractor);
}
}
// Execute all metadata extractors in order of their priority
foreach (IMetadataExtractor extractor in extractors.OrderBy(m => m.Metadata.Priority))
{
try
{
List <IDictionary <Guid, IList <MediaItemAspect> > > result = new List <IDictionary <Guid, IList <MediaItemAspect> > >();
if (extractor.TryExtractStubItems(mediaItemAccessor, result))
{
stubAspects.AddRange(result);
}
}
catch (Exception e)
{
MetadataExtractorMetadata mem = extractor.Metadata;
ServiceRegistration.Get <ILogger>().Error("MediaAccessor: Error extracting stub items from metadata extractor '{0}' (Id: '{1}')",
e, mem.Name, mem.MetadataExtractorId);
throw;
}
}
return(stubAspects.Count > 0 ? stubAspects : null);
}
public Task <IDictionary <Guid, IList <MediaItemAspect> > > ExtractMetadataAsync(IResourceAccessor mediaItemAccessor,
IEnumerable <Guid> metadataExtractorIds, IDictionary <Guid, IList <MediaItemAspect> > existingAspects, bool forceQuickMode)
{
ICollection <IMetadataExtractor> extractors = new List <IMetadataExtractor>();
foreach (Guid extractorId in metadataExtractorIds)
{
IMetadataExtractor extractor;
if (LocalMetadataExtractors.TryGetValue(extractorId, out extractor))
{
extractors.Add(extractor);
}
}
return(ExtractMetadataAsync(mediaItemAccessor, extractors, existingAspects, forceQuickMode));
}
public ICollection <Guid> GetMetadataExtractorsForMIATypes(IEnumerable <Guid> miaTypeIDs)
{
return(LocalMetadataExtractors.Where(
extractor => extractor.Value.Metadata.ExtractedAspectTypes.Keys.Intersect(miaTypeIDs).Any()).Select(
kvp => kvp.Key).ToList());
}
