How do I output CAF file size in log?

Question

I know the url of blank.caf audio file what I cam creating(recording) in my iPhone app. I am concerned about its size and would like to output its size to the log. I could not find a method to do so. I am also interesting in finding out the audio file's duration.

Can you share some of the code you're using to create the file? APIs are slightly different if you're using Core Audio vs AVFoundation. — dpassage, May 12 '15 at 22:26

score 2 · Accepted Answer · answered May 12 '15 at 22:39

import UIKit
import AVFoundation
extension NSURL {
    var movieDuration:  Double {
        if checkResourceIsReachableAndReturnError(nil) {
            return Double(CMTimeGetSeconds(AVURLAsset(URL: self, options: nil).duration) )
        }
        return 0
    }

}
extension String {
    var fileAttributes:NSDictionary {
        if NSFileManager.defaultManager().fileExistsAtPath(self){
            return NSFileManager.defaultManager().attributesOfItemAtPath(self, error: nil)! as NSDictionary
        }
        return[:]
    }
    var fileSize:Int {
        if NSFileManager.defaultManager().fileExistsAtPath(self){
            return Int( fileAttributes.fileSize() )
        }
        return 0
    }
    var fileSizeKB:String {
        let styler = NSByteCountFormatter()
        styler.allowedUnits = NSByteCountFormatterUnits.UseKB
        styler.countStyle = NSByteCountFormatterCountStyle.File
        return styler.stringFromByteCount(Int64(fileSize))
    }
}

Testing

if let audioURL = NSURL(string:"http://freetone.org/ring/stan/iPhone_5-Alarm.mp3") {
    let documentsDirectoryURL =  NSFileManager().URLsForDirectory(.DocumentDirectory, inDomains: .UserDomainMask).first as! NSURL
    let destinationURL = documentsDirectoryURL.URLByAppendingPathComponent(audioURL.lastPathComponent!)
    if let audioData = NSData(contentsOfURL: audioURL) {
        audioData.writeToURL(destinationURL, atomically: true)
        destinationURL.path!.fileSizeKB    // 182KB
        destinationURL.movieDuration      // 22.704s
    }
}

score 0 · Answer 2 · answered May 12 '15 at 22:38

0

In bytes:

let attributes = NSFileManager.defaultManager()
     .attributesOfItemAtPath(filePath, error: nil) as NSDictionary?
let fileSize : UInt64 = attributes!.fileSize()

answered May 12 '15 at 22:38

Mundi

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How do I output CAF file size in log?

2 Answers2