/// <summary>
/// Deletes the ID3 tag of the specified tag family type from the MP3 data.
/// </summary>
/// <param name="family">The ID3 tag family type.</param>
public void DeleteTag(Id3TagFamily family)
{
EnsureWritePermissions(Id3Messages.NoWritePermissions_CannotDeleteTag);
IEnumerable <RegisteredId3Handler> registeredHandlers = ExistingHandlers.GetHandlers(family);
RegisteredId3Handler registeredHandler = registeredHandlers.FirstOrDefault();
if (registeredHandler != null)
{
Id3Handler handler = registeredHandler.Handler;
handler.DeleteTag(_stream);
InvalidateExistingHandlers();
}
}
/// <summary>
/// Retrieves an ID3 tag of the specified tag family type - version 2.x or version 1.x.
/// </summary>
/// <param name="family">The ID3 tag family type required.</param>
/// <returns>The ID3 tag of the specified tag family type, or null if it doesn't exist.</returns>
public Id3Tag GetTag(Id3TagFamily family)
{
IEnumerable <RegisteredId3Handler> familyHandlers = ExistingHandlers.GetHandlers(family);
RegisteredId3Handler familyHandler = familyHandlers.FirstOrDefault();
if (familyHandler == null)
{
return(null);
}
Id3Handler handler = familyHandler.Handler;
Id3Tag tag = handler.ReadTag(_stream);
return(tag);
}
public bool WriteTag(Id3Tag tag, WriteConflictAction conflictAction = WriteConflictAction.NoAction)
{
EnsureWritePermissions(Id3Messages.NoWritePermissions_CannotWriteTag);
if (tag == null)
{
throw new ArgumentNullException("tag");
}
//The tag should specify major version number
if (tag.MajorVersion == 0)
{
throw new ArgumentException(Id3Messages.MajorTagVersionMissing, "tag");
}
//Get any existing handlers from the same family as the tag
IEnumerable <RegisteredId3Handler> familyHandlers = ExistingHandlers.GetHandlers(tag.Family);
//If a tag already exists from the same family, but is a different version than the passed tag,
//delete it if conflictAction is Replace.
RegisteredId3Handler familyHandler = familyHandlers.FirstOrDefault();
if (familyHandler != null)
{
Id3Handler handler = familyHandler.Handler;
if (handler.MajorVersion != tag.MajorVersion || handler.MinorVersion != tag.MinorVersion)
{
if (conflictAction == WriteConflictAction.NoAction)
{
return(false);
}
if (conflictAction == WriteConflictAction.Replace)
{
Id3Handler handlerCopy = handler;
handlerCopy.DeleteTag(_stream);
}
}
}
//Write the tag to the file. The handler will know how to overwrite itself.
RegisteredId3Handler registeredHandler = RegisteredHandlers.GetHandler(tag.MajorVersion, tag.MinorVersion);
bool writeSuccessful = registeredHandler.Handler.WriteTag(_stream, tag);
if (writeSuccessful)
{
InvalidateExistingHandlers();
}
return(writeSuccessful);
}