New Music Tagreader (1 Viewer)

[hwahrmann]

The existing Tagreader worked very fine and fast.
However we had some problems when it came to exceptions, like a Tag editor not writing the tags correctly, or special encoders not following exactly 100% the specs.

It was quite time consuming to get the bugs fixed.
So we decided to use an open source Tag reader Taglib-Sharp, which supports all file formats that we did with our own tag reader. (well i've added Ape file support yesterday)

our internal tests have shown that it works perfect and with the same speed as the MP Tagreader.

Knowing that there are many people out there with different file format, i encourage you to test as much as possible.

thx,

Helmut

 

[mbuzina]

Hard decision to abandon such a lot of (good) work... Especially only because others can not stick to specs.

So: Is it in the SVN right now? (You didn't really say that ;-) )

 

[hwahrmann]

yeah, it's bad, but on the long run, we've also write support included.

it's in svn and is automatically included in the next nightly build

 

[jms969]

I hate to see you abandon your hard work, but you just keep making MP better and better... Keep up the good work!!!

 

[sukhjinder]

From where to download old TagReader

I'd like to take a look at your TagReader. I tried TagLibSharp and am having some issues with it, like not knowing how to get rating out of Media files. So can you point me to the location of your TagReader.
Thanks
Sukhjinder
http://sukhjinder.co.nr/letsyo

 

[hwahrmann]

Here's how i handle the Rating.

TagLib.File tag = TagLib.File.Create(strFile);
if (tag.MimeType == "taglib/mp3")
{
	// Handle the Rating, which comes from the POPM frame
	TagLib.Id3v2.Tag id32_tag = tag.GetTag(TagLib.TagTypes.Id3v2) as TagLib.Id3v2.Tag;
	if (id32_tag != null)
	{
		TagLib.Id3v2.PopularimeterFrame popm;
		foreach (TagLib.Id3v2.Frame frame in id32_tag)
		{
			popm = frame as TagLib.Id3v2.PopularimeterFrame;
			if (popm != null)
			{
				int rating = popm.Rating;
				// Do whatever needed with rating
			}
		}
	}
}

currently doing it only for mp3 files, where we have the rating in the popm frame.

 

[sukhjinder]

Thanks But What About MP's TagRreader

Thanks for the Reply. I found that the method proposed by you for TagLibSharp woks well. But I'd love to check out the TagReader MediaPortal used to use before switching to TagLibSharp. So can I please have the URl from where to download it.

Thanks...

 

[hwahrmann]

PM me your mail address and i'll drop you a mail

As an alternative you can get the source code of MP from mid of August out of SVN
this contains the tagreader source.

 

[sukhjinder]

Get Rating from WMA files?

Thanks for the code to get the rating from .mp3 files using TagLibSharp. Can you please guide me as to how can I do the same for wma files.

Thanks
Sukhjinder...
http://sukhjinder.co.nr/letsyo

P.S: I understand that this is not a forum for TagLib# but I'm hoping that I will get some help here.

 

[hwahrmann]

As per ASF specification you should find the rating as a dword in the ContentDescriptor. The content descriptor should also be there for title, author, etc.
But it looks like that no one is using it.

WMP inserts some descriptors into the ExtendedContentDescriptors. When you browse a wma file with a hex editor you'll see those as "WM/xxxxxxx".

For rating, we're interested in WM/SharedUserRating which is:
Stars Value

1 1
2 25
3 50
4 75
5 99

Normally you can get the descriptor strings in taglib# with GetDescriptorStrin. However as the rating is a dword, taglib# does return null. I'll talk to Brian about that.

so how to retrieve the value?

// Get the Generic Tag from the WMA file
File tag = File.Create(@"D:\Temp\output.wma");

// Get a tagof type TagLib.Asf.Tag so that we may use the ASF Tag methods
TagLib.Asf.Tag asftag = tag.GetTag(TagTypes.Asf) as TagLib.Asf.Tag;

// Note: This will not work, because rating is a DWORD and Taglib# only return Unicode Values
string rating = asftag.GetDescriptorString("WM/SharedUserRating");

// Because of the above not working, we use the one below to get the rating
foreach (TagLib.Asf.ContentDescriptor desc in asftag.GetDescriptors("WM/SharedUserRating"))
{
     if (desc == null)
        continue;
        rating = desc.ToString();
}

Console.WriteLine(ratin);