RE: Apple Lossless ASBD
RE: Apple Lossless ASBD
- Subject: RE: Apple Lossless ASBD
- From: "Edwards, Waverly" <email@hidden>
- Date: Wed, 01 May 2013 04:15:23 -0500
- Acceptlanguage: en-US
- Thread-topic: Apple Lossless ASBD
I figured out my problem
err = AudioFormatGetProperty( kAudioFormatProperty_FormatInfo, 0, NULL, &size, &clientFormat );
should have been
err = AudioFormatGetProperty( kAudioFormatProperty_FormatInfo, 0, NULL, &size, clientFormat );
Sometimes it is the simplest things that trip us up.
Thanks,
W.
________________________________________
From: coreaudio-api-bounces+waverly.edwards=email@hidden [coreaudio-api-bounces+waverly.edwards=email@hidden] On Behalf Of Edwards, Waverly [email@hidden]
Sent: Tuesday, April 30, 2013 5:00 PM
To: email@hidden
Subject: Apple Lossless ASBD
What parameters do you use to return an ASBD for Apple Lossless client?
I've been trying to find this out for a couple of hours without success.
My goal is to setup my ASBD by reference and then write the file to an m4a type but I have not been able to get past here.
I get an error -50 which is a parameter error. The documentation states there are no flags.
I have tried it with and without a flag but haven't found the answer yet.
Would someone mind pointing out my error.
Thank you,
W.
OSStatus SetAppleLosslessAudioASBD( AudioStreamBasicDescription * clientFormat )
{
UInt32 size;
OSStatus err;
size = sizeof( AudioStreamBasicDescription );
memset( clientFormat, 0, size );
clientFormat->mSampleRate = 44100.0;
clientFormat->mFormatID = kAudioFormatAppleLossless;
// clientFormat->mFormatFlags = kAppleLosslessFormatFlag_16BitSourceData;
// clientFormat->mChannelsPerFrame = 2;
err = AudioFormatGetProperty( kAudioFormatProperty_FormatInfo, 0, NULL, &size, &clientFormat );
return err;
}
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