Re: AudioFileGetPropertyInfo() on kAudioFilePropertyDataFormat returning 0?
Re: AudioFileGetPropertyInfo() on kAudioFilePropertyDataFormat returning 0?
- Subject: Re: AudioFileGetPropertyInfo() on kAudioFilePropertyDataFormat returning 0?
- From: john <email@hidden>
- Date: Fri, 18 Nov 2005 19:06:17 -0500
Hi Doug,
Here's the code I'm using:
if (!AudioFileOpen(&audioFileFSRef, fsRdWrPerm, 0, &theAudioFileID))
{
UInt32 propertySize = sizeof(theAudioFileStreamDescription);
if (!AudioFileGetProperty(theAudioFileID,
kAudioFilePropertyDataFormat, &propertySize,
&theAudioFileStreamDescription))
{
// Here theAudioFileStreamDescription will
// have all 0's on certain AIFC files, but most I've tried work
}
}
Thanks.
-- John
So you're calling:
AudioStreamBasicDescription &asbd;
UInt32 propertySize = sizeof(asbd);
err = AudioFileGetProperty(someAudioFileID,
kAudioFilePropertyDataFormat, &propertySize, &asbd);
Are you setting propertySize to sizeof(asbd)? If not and
propertySize happens to be zero, then you'll get exactly the
behavior you describe.
Doug
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