[Webkit-unassigned] [Bug 70061] New: Feature request: a way to schedule callbacks without relying on setTimeout

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=70061

           Summary: Feature request: a way to schedule callbacks without
                    relying on setTimeout
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: Web Audio
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: smus at google.com
                CC: crogers at google.com


To do things like scheduling playback of multiple tracks into the future, currently need to rely on setTimeout calls, as in the following example:

  var duration = bufferNowPlaying.duration;
  ctx.timer = setTimeout(function() {
    playNextSong(bufferToPlayNext);
  }, duration * 1000);

setTimeout is not precise, especially if dealing with a page that isn't in the foreground. Since Web Audio provides an accurate timing engine, we should use that instead!

For example, we could have a method scheduleCallbackAtTime(time, function) on the AudioContext, that would take a time (in ms) and a callback function to call at that precise time.

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