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Re: Finding the duration of a MidiFile

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Re: Finding the duration of a MidiFile

Subject: Re: Finding the duration of a MidiFile
From: Doug Wyatt <email@hidden>
Date: Wed, 4 Oct 2006 08:45:05 -0700

On Oct 3, 2006, at 21:20 , Peter Zegelin wrote:

Does CoreAudio have an easy way to determine the duration of a MidiFile? I am using the MusicPlayer API and cant find anything relevant.

You can get the length of each track in beats; the length of the longest track is the file's duration in beats (assuming that the end- of-track markers are reasonably close to the ends of the last notes).

But there's no simple way to convert that to seconds without either assuming that the tempo track is trivial (i.e. only has one tempo) or building a tempo map and doing the math.

--
Doug Wyatt
Core Audio, Apple

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Re: Finding the duration of a MidiFile
From: Peter Zegelin <email@hidden>
note to Doug Wyatt
From: jbrave <email@hidden>


References:  
  >Finding the duration of a MidiFile (From: Peter Zegelin <email@hidden>)




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