// Sources/iMessageMax/Enrichment/AudioProcessor.swift
import Foundation
import AVFoundation
struct AudioProcessor {
func getDuration(at path: String) -> Double? {
let url = URL(fileURLWithPath: (path as NSString).expandingTildeInPath)
let asset = AVAsset(url: url)
let duration = asset.duration
return duration.seconds.isFinite ? duration.seconds : nil
}
struct AudioMetadata {
let duration: Double
let codec: String?
}
func getMetadata(at path: String) -> AudioMetadata? {
guard let duration = getDuration(at: path) else { return nil }
let url = URL(fileURLWithPath: (path as NSString).expandingTildeInPath)
let asset = AVAsset(url: url)
var codec: String?
if let track = asset.tracks(withMediaType: .audio).first {
for desc in track.formatDescriptions {
let formatDesc = desc as! CMFormatDescription
let mediaSubType = CMFormatDescriptionGetMediaSubType(formatDesc)
codec = String(format: "%c%c%c%c",
(mediaSubType >> 24) & 0xFF,
(mediaSubType >> 16) & 0xFF,
(mediaSubType >> 8) & 0xFF,
mediaSubType & 0xFF)
break
}
}
return AudioMetadata(duration: duration, codec: codec)
}
}
