Re: CAAudioFile writing on Panther
Re: CAAudioFile writing on Panther
- Subject: Re: CAAudioFile writing on Panther
- From: Taybin Rutkin <email@hidden>
- Date: Sun, 10 Sep 2006 18:21:12 -0400
The implementation of CAAudioFile is almost completely different
between 10.3 and 10.4. One uses the AudioFile api and the other uses
the ExtAudioFile api. But since ExtAudioFile is just a wrapper over
AudioFile+AudioConverter, I don't know where that would be causing
trouble.
Taybin
On Sep 8, 2006, at 4:00 PM, Craig Hopson wrote:
Hi,
We have an application that runs on Tiger & Panther (10.3.9).
It is compiled:
SDKROOT = /Developer/SDKs/MacOSX10.4u.sdk
MACOSX_DEPLOYMENT_TARGET = 10.3
It seems to work well in both environments but for one thing -
writing a file. We use the CAAudioFile wrapper. This is a pure
export - that is, we are not playing while writing. On a 500 MHz
Ti Powerbook running Tiger, export is fine. However, on a 2 GHz
dual G5 running Panther the export doesn't work - we get drop outs,
buzzing, etc. Audio playback within the application is fine on all
hardware/OS combinations that we have tested. And, other than
pulling for the audio buffers ourselves (rather than the default
output AU) and calling CAAudioFile::Write() there are no
differences between the export and playback code.
Is Tiger really this much better?
Are we missing something?
Craig Hopson
Red Rock Software
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