I haven't tested with m4a lossless, but I have played about 14 or so lossless wav simultaneously as well as that many m4a compressed files. They are all buffered though.
On Jan 11, 2015, at 7:08 PM, Robert Carroll <[email protected]> wrote: > Hi. > > Thanks. I am doing that with the same function call. > > Further investigation is pointing to some other issue. My code that reads the > ExtAudioFile objects is playing single m4a files, but not multiple files set > up on different mixer buses. I was testing with a single A440.if file then > with 3 m4a lossless files for C4, E4, G4 which should play simultaneously. > > On iOS 7 it works, on iOS 8 I get a brief burst of vicious white noise. > > I’m inclined to think this is back to the storage type for the sample data. > Since, I haven’t found an answer to a replacement for the AudioUnitSampleType > on iOS, I had reverted my code to using that type. > > rob > >> On Jan 11, 2015, at 6:25 PM, Matt Hart <[email protected]> wrote: >> >> I use this with iOS 8 and 7 without any issues. Did you set the expected >> client data format onto the audio file property? >> >> status = ExtAudioFileSetProperty(_audioFile, >> kExtAudioFileProperty_ClientDataFormat, sizeof(_targetAudioDescription), >> &_targetAudioDescription); >> >> >> On Jan 11, 2015, at 1:56 PM, Robert Carroll <[email protected]> wrote: >> >>> I am attempting to narrow down the options why my audiograph code is >>> failing on iOS 8. >>> >>> I am using ExtAudioFileRead to extract data from applelossless source files >>> and load structs set up for this purpose. >>> The buffers and audioData parts of the struct are typed as >>> AudioUnitSampleType. >>> >>> All of this works as it should on iOS’s up to 7.x. Running on iOS 8.1.2 I >>> can play aiff source files with this code but get distortion if I load the >>> m4a (lossless) files. >>> >>> What changed in iOS 8 with extaudiofile that would account for this issue? >>> >>> thanks >>> >>> rob >>> >>> >>> Robert Carroll >>> RSM Records >>> Toronto >>> http://www.rsmrecords.com >>> >>> >>> >>> _______________________________________________ >>> Do not post admin requests to the list. They will be ignored. >>> Coreaudio-api mailing list ([email protected]) >>> Help/Unsubscribe/Update your Subscription: >>> https://lists.apple.com/mailman/options/coreaudio-api/matt%40matthart.com >>> >>> This email sent to [email protected] >> >
_______________________________________________ Do not post admin requests to the list. They will be ignored. Coreaudio-api mailing list ([email protected]) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/coreaudio-api/archive%40mail-archive.com This email sent to [email protected]
