How to resolve (com.apple.ShazamKit error 202.) when using ShazamKit - ios

Question

I've been trying to add Shazam matching to my app using the new ShazamKit. I've used Apple's sample code found here and adapted it slightly.
import ShazamKit
import AVFAudio
import Combine
#available(iOS 15.0, *)
class ShazamMatcher: NSObject, ObservableObject, SHSessionDelegate {
// MARK: - Properties
#Published var result: SHMatch?
#Published var isRecording = false
private var isInitialSetupDone = false
private var session: SHSession?
private let audioEngine = AVAudioEngine()
// MARK: - Actions
func match() throws {
result = nil
session = SHSession()
session?.delegate = self
try doInitialSetupIfNeeded()
AVAudioSession.sharedInstance().requestRecordPermission { [weak self] success in
guard success, let self = self else {
return
}
try? self.audioEngine.start()
self.isRecording = true
}
}
func stopMatching() {
audioEngine.stop()
isRecording = false
}
// MARK: - Setup
private func doInitialSetupIfNeeded() throws {
guard !isInitialSetupDone else {
return
}
let audioFormat = AVAudioFormat(
standardFormatWithSampleRate: audioEngine.inputNode.outputFormat(forBus: 0).sampleRate,
channels: 1
)
audioEngine.inputNode.installTap(onBus: 0, bufferSize: 2048, format: audioFormat) { [weak session] buffer, audioTime in
session?.matchStreamingBuffer(buffer, at: audioTime)
}
try AVAudioSession.sharedInstance().setCategory(.record)
isInitialSetupDone = true
}
// MARK: - SHSessionDelegate
func session(_ session: SHSession, didFind match: SHMatch) {
// Handle match here
}
func session(_ session: SHSession, didNotFindMatchFor signature: SHSignature, error: Error?) {
// Handle error here
}
}
However, when calling match(), the delegate eventually reports an error The operation couldn’t be completed. (com.apple.ShazamKit error 202.)
I've added a new key using my bundle identifier for the ShazamKit services and downloaded the .p8 file. Do I need this file and if so, how?
Has anybody been able to resolve this error?

Answer 1

I've found a solution. First, apparently the inter-app audio entitlement has to be enabled.
Second, it seems like you need a SHSignatureGenerator as well (I though it would be enough to call matchStreamingBuffer
Here's code that works:
https://github.com/heysaik/ShazamKit-Demo/blob/main/Shazam/ViewController.swift