CODEWITHSUNDEEP
swiftmetadataavassetavplayeritem
F'ed Up Studio
F'ed Up Studio

Reputation: 1

Trying to extract metaData from URL

I am developing a live music streaming application for iOS. What I am trying to do is, extracting the metadata values of the music that is currently playing. Metadata is stored in the URL. Write now I am able to extract this as metaData. 

 Optional([<AVMetadataItem: 0x600001c69860, identifier=common/title, keySpace=comn, key class = __NSCFConstantString, key=title,
 commonKey=title, extendedLanguageTag=(null), dataType=(null),
 time={19392/22050 = 0.879}, duration={INVALID}, startDate=(null),
 extras={ }, value class=__NSCFString, value=Electricity - Silk City &
 Dua Lipa f./Diplo - 03:39 >])

The problem is there is only one common key ie "title" in the metadata item. This common key has a value that consist of song title, artist and song duration. How do I extract only the artist value from this common key..

This is how am I extracting metadata.

I added an observer to the AVPlayerItem for key path "timedMetadata"

playerItem.addObserver(self, forKeyPath: "timedMetadata", options: [], context: nil)




 override func observeValue(forKeyPath keyPath: String?, of object: Any?, change: [NSKeyValueChangeKey : Any]?, context: UnsafeMutableRawPointer?) {


    if keyPath != "timedMetadata" { return }

    var data: AVPlayerItem = object as! AVPlayerItem

    for item in data.timedMetadata as! [AVMetadataItem] {


        if let stringValue = item.value as? String {
            //print(item.commonKey)
            if item.commonKey!.rawValue == "title" {
                print(stringValue.description)
            }



        }

    }


}

Getting this as value : Electricity - Silk City & Dua Lipa f./Diplo - 03:39

This value has the song title, song artists, and song duration. What I want is to get only the song artist as the value. metadata changes it value for each song that is currently being played.

Upvotes: 0

Views: 960

Answers (1)

F&#39;ed Up Studio
F&#39;ed Up Studio

Reputation: 1

Finally have found a way around to solve this problem..

The value i was getting was separated by a common character (-). What I did is converted this single string into array of strings.

let stringValueArray = stringValue.components(separatedBy: "-")

                let title = stringValueArray[0]

                let author = stringValueArray[1]

                let duration = stringValueArray[2]

I know this might not be the right approach, but still it works..

Upvotes: -1

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