| Thanks. That’s an interesting suggestion.
I’m just setting up to branch my existing code to set different stereoStreamFormats for pre-ios 8 & iOS 8. My earlier email was incorrect about the iOS 7 sample storage. I am using Uint 32, not SInt 32.
The approach you suggest should avoid having to make that branch. I’ll have to look into it.
regards,
rob
On Jan 9, 2015, at 10:43 AM, Matt Hart < email@hidden> wrote:
I know this doesn't really answer your question, but I avoid creating AudioStreamFormatDescription structures. Instead, I grab the Info structure from the destination and set that to source.
e.g. get a matrix mixer unit input description: AudioStreamBasicDescription mxmx_Input_asbd = {0}; size = sizeof(mxmx_Input_asbd); result = AudioUnitGetProperty(mxmx_unit[controllerIndex], kAudioUnitProperty_StreamFormat, kAudioUnitScope_Input, 0, &mxmx_Input_asbd, &size);
set that to the source conv unit output description: result = AudioUnitSetProperty(conv_unit, kAudioUnitProperty_StreamFormat, kAudioUnitScope_Output, 0, &mxmx_Input_asbd, sizeof(mxmx_Input_asbd));
On Jan 9, 2015, at 10:38 AM, Robert Carroll < email@hidden> wrote: Hi,
At the tail end of WWDC 2014 session 501, Doug Wyatt mentions in passing that these new classes can be integrated into existing core audio code. Has anyone found any examples/ documentation on how to accomplish this?
iOS 8 has broken the audio output of my audiograph code. I assume its has something to do with the deprecated audiosampletype and audiounitsampletype. On Mac OS I’ve changed these references to Float 32 and everything works as expected. For iOS 7 and earlier float 32 resulted in dangerous full volume white noise output. I found that Sint 32 worked, but apparently not for iOS8.
The developer session states that there is now a common audio format between OS X and iOS, so hopefully Float 32 with the same flags I’m using for Mac will solve the iOS 8 problem, but will require more branching code to continue to support iOS 6 - 7.
thanks,
rob
Robert Carroll RSM Records Toronto
Do not post admin requests to the list. They will be ignored.
Coreaudio-api mailing list (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden
|