The AudioFileIO reads HEIC file endlessly

[atamanuk]

The problem

The AudioFileIO reads HEIC file endlessly

Environment

• ATL version: 5.22
• OS/version: MacOS 13.4.1

Details

When I'm creating the Track from HEIC file without mimeType, the constructor of AudioFileIO goes into an endless loop and incessantly writes to log:

  {ATL.Logging.Log.LogItem}
    Level: 1
    Location: "in-memory"
    Message: "moov atom could not be found; aborting read"
    When: {22.04.2024 18:43:30}

Code To Reproduce Issue

  var b = File.ReadAllBytes("./2020-08-25 23-23-33.HEIC");
  using var s = new MemoryStream(b);
  var t = new Track(s);

[Zeugma440]

Thanks for your feedback~

These kind of issues are often specific to a quirk inside the file you're using. Would it be possible to upload it somewhere (e.g. mega, WeTransfer...)?

Thanks in advance

[Zeugma440]

Plus I just realized HEIC is a picture format. This library is an audio library. Are you sure you're using it correctly?

[atamanuk]

I use the library to find out the type of audio. But sometimes incorrect files are sent to the input. It would be nice if the library would return error or throw exception in this case.

2020-08-25 23-23-33.HEIC.zip

[Numpsy]

fwiw, looks like it gets stuck at

atldotnet/ATL/AudioData/AudioFileIO.cs

Line 75 in a8e4217

while (!found && alternate < AudioDataIOFactory.MAX_ALTERNATES)

, because found is always false and alternate doesn't get incremented (the variant of AudioFileIO() that takes a path does exit for comparison)

[Zeugma440]

Well done @Numpsy, you saved me quite some debugging time 😄

The fix will be available on next release ✅

[Zeugma440]

Fix is available on today's v5.23