Re: Speeding up MusicPlayerStart()?
Re: Speeding up MusicPlayerStart()?
- Subject: Re: Speeding up MusicPlayerStart()?
- From: Edwin Vane <email@hidden>
- Date: Mon, 10 Oct 2005 11:53:57 -0400
- Mail-followup-to: CoreAudio/Midi List <email@hidden>
After finding example code for MusicPlayer in the AUViewTest I noticed
that by creating the graph with a DLSSynth in it yourself and using
AUGraphStart(), when you call MusicPlayerStart() later the delay is less than
1ms.
On Sun, Oct 09, 2005 at 12:46:51PM -0400, Edwin Vane wrote:
> Hi,
>
> I've been looking at the MusicPlayer API. I find that calling
> MusicPlayerStart() can take about 1s to complete (measured using a pair
> of calls to the host time retrieval functions). I was hoping to use
> MusicPlayer inside QuickTime (specifically inside a derived media
> handler to play midi data). However, using Start and Stop for play and
> stop in quicktime doesn't seem like a good idea if it incurs a second
> delay (which may cause tracks to become unsynchronized). Is there a way
> to speed up MusicPlayerStart() or some other method to implement start
> and stop of music without incurring the delay? Or should I look into
> some sort of workaround (setting a NULL sequence perhaps, although I
> haven't tried that).
>
> --
>
> Edwin Vane
> MMath Candidate
> Computer Graphics Lab
> School of Computer Science
> University of Waterloo
>
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--
Edwin Vane
MMath Candidate
Computer Graphics Lab
School of Computer Science
University of Waterloo
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