INNER CODE UNIT · Swift

extractWaveformFromFile

cometchat/cometchat-uikit-flutter · packages/cometchat_uikit/ios/Classes/SwiftCometchatChatUikitPlugin.swift:556

    private func extractWaveformFromFile(filePath: String, sampleCount: Int, completion: @escaping ([Double]) -> Void) {
        let fileUrl = URL(fileURLWithPath: filePath)
        
        guard FileManager.default.fileExists(atPath: filePath) else {
            completion([])
            return
        }
        
        DispatchQueue.global(qos: .userInitiated).async {
            do {
                let audioFile = try AVAudioFile(forReading: fileUrl)
                let format = audioFile.processingFormat
                let frameCount = UInt32(audioFile.length)
                
                guard frameCount > 0 else {
                    DispatchQueue.main.async { completion([]) }
                    return
                }

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