/// <summary>
/// Creates a resource, given a metadata block of values.
/// </summary>
/// <param name="attribs"></param>
/// <returns></returns>
public static MediaResource CreateResource(ResourceAttributes attribs)
{
MediaResource newRes = new MediaResource();
SetCommonAttributes(newRes, attribs);
return newRes;
}
/// <summary>
/// Creates a resource, given the contentUri and protocolInfo.
/// </summary>
/// <param name="contentUri"></param>
/// <param name="protocolInfo"></param>
/// <returns></returns>
public static MediaResource CreateResource (string contentUri, string protocolInfo)
{
ResourceAttributes attribs = new ResourceAttributes();
attribs.contentUri = contentUri;
attribs.protocolInfo = CdsMetadataCaches.ProtocolInfoStrings.CacheThis(protocolInfo);
MediaResource newRes = new MediaResource();
SetCommonAttributes(newRes, attribs);
return newRes;
}
public static MediaItem PopulateMetaData(MediaResource R, FileInfo F)
{
MediaItem RetVal;
MediaBuilder.item Item = null;
DText parser = new DText();
parser.ATTRMARK = "-";
parser.MULTMARK = ".";
switch(F.Extension.ToUpper())
{
case ".MP3":
Item = ParseMP3_V1(F);
if(Item==null)
{
parser[0] = F.Name;
if(parser.DCOUNT()==2)
{
Item = new MediaBuilder.musicTrack(parser[2,1].Trim());
Item.creator = parser[1].Trim();
((MediaBuilder.musicTrack)Item).artist = new PersonWithRole[1]{new PersonWithRole()};
((MediaBuilder.musicTrack)Item).artist[0].Name = Item.creator;
((MediaBuilder.musicTrack)Item).artist[0].Role = null;
}
}
break;
}
if(Item!=null)
{
RetVal = MediaBuilder.CreateItem(Item);
RetVal.AddResource(R);
return(RetVal);
}
else
{
// Create a Generic Item
string fname = F.Name;
int fnameidx = fname.IndexOf(".");
if(fnameidx!=-1) fname=fname.Substring(0,fnameidx);
MediaBuilder.item genericItem = new MediaBuilder.item(fname);
RetVal = MediaBuilder.CreateItem(genericItem);
RetVal.AddResource(R);
return(RetVal);
}
}
/// <summary>
/// Constructors use this method to set the properties of a resource.
/// Programmers can use this method also, but the method is not
/// guaranteed to be thread safe. As a general rule, programmers shouldn't
/// be changing the values of resources after they've instantiated them.
/// </summary>
/// <param name="res"></param>
/// <param name="attribs"></param>
public static void SetCommonAttributes(MediaResource res, ResourceAttributes attribs)
{
res.ProtocolInfo = attribs.protocolInfo;
res.ContentUri = attribs.contentUri.Trim();
if ((attribs.importUri != null) && (attribs.importUri != ""))
{
res[T[_RESATTRIB.importUri]] = attribs.importUri;
}
TransferValue("bitrate", res, attribs);
TransferValue("bitsPerSample", res, attribs);
TransferValue("colorDepth", res, attribs);
TransferValue("duration", res, attribs);
TransferValue("nrAudioChannels", res, attribs);
TransferValue("protection", res, attribs);
TransferValue("resolution", res, attribs);
TransferValue("sampleFrequency", res, attribs);
TransferValue("size", res, attribs);
}
/// <summary>
/// <para>
/// This method allows a generalized implementation of transfering
/// a value from a
/// <see cref="ResourceBuilder.ResourceAttributes"/>
/// to a
/// <see cref="MediaResource"/>
/// object.
/// </para>
///
/// <para>
/// Classes derived from the
/// <see cref="ResourceBuilder.ResourceAttributes"/>
/// class have fields, with names that match against fields in a
/// <see cref="MediaResource"/>
/// object.
/// </para>
/// </summary>
/// <param name="attribName">name of the attribute to transfer</param>
/// <param name="res">The
/// <see cref="MediaResource"/>
/// object to transfer to.
/// </param>
/// <param name="attribs">
/// The
/// <see cref="ResourceBuilder.ResourceAttributes"/>
/// object to transfer from.
/// </param>
private static void TransferValue(string attribName, MediaResource res, ResourceAttributes attribs)
{
object val = null;
System.Type type = attribs.GetType();
FieldInfo info = type.GetField(attribName);
if (info != null)
{
val = info.GetValue(attribs);
if (val != null)
{
IValueType ivt = val as IValueType;
bool ok = true;
if (ivt != null)
{
ok = ivt.IsValid;
}
if (ok)
{
//res.m_Attributes[attribName] = val;
res[attribName] = val;
}
}
}
}
