this m4a file yields no events or errors

[andrewrk]

File: http://superjoe.s3.amazonaws.com/temp/node-musicmetadata-broken.m4a

Test case:

var Mm = require('musicmetadata');
var fs = require('fs');
var thefile = "node-musicmetadata-broken.m4a"

var parser = new Mm(fs.createReadStream(thefile));
parser.on('metadata', function(metadata) {
  console.log("metadata", metadata);
});
parser.on('done', function(value) {
  console.log("done");
});

When this script is run, nothing is printed to stdout and no errors occur.

I'll see if I can fix it.

[andrewrk]

I stepped through to see what is happening. In id4.js,

The code gets to this point:

          if (!~CONTAINER_ATOMS.indexOf(v)) {
            // whats the num for ilst?
            cb.state = (cb.atomContainer === 'ilst') ? 2 : -1;
            return new strtok.BufferType(cb.atomLength - 8);
          }

In strtok.js, this while loop terminates:

        while (type !== DONE && type !== DEFER && bufsLen >= type.len) {

Because type is:

{ len: 8577079, get: [Function] }

And bufsLen is 1714.

After the while loop, strtok waits for more data which never comes, and the callback in id4.js is never called.

Do you know how to solve this?