AUAudioFilePlayer
AUAudioFilePlayer
- Subject: AUAudioFilePlayer
- From: Christopher Ashworth <email@hidden>
- Date: Sun, 23 Dec 2007 16:29:30 -0500
Hi all,
I'm looking at rewriting my application to use AUAudioFilePlayer in
place of my own file playing class.
I have a few questions about its behavior:
- If frames are dropped during playback, does AUAudioFilePlayer
guarantee that later frames are synchronized with what should have
been their proper playback time, or does the "sample-accurate timing"
only apply to the first scheduled sample? Another way of putting
this is: Does AUAudioFilePlayer pause or skip when it can't keep up?
- Related to above: If I have a number of separate AUGraphs, each with
an AUAudioFilePlayer, and I schedule each to start at the same host
time, will this effectively provide guaranteed sample-accurate sync
across all the AUGraphs?
- mStartFrame / mFramesToPlay: If the AUAudioFilePlayer performs
sample rate conversion to match the audio file to the unit's output
rate, what is the "coordinate system" of these properties? Both in
file frames? Both in output frames?
Thanks very much!
Chris
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