One way to do it is to create an AudioFileID open for reading and writing using the Audio File Services Reference https://developer.apple.com/library/mac/documentation/MusicAudio/Reference/AudioFileConvertRef/ Then you create a ExtAudioFileID for reading only using ExtAudioFileWrapAudioFileID. This actually works, but writing to Audio file isn't that straightforward if it's not LPCM.
On Fri, Jul 24, 2015 at 9:44 AM, Matthew Pease <[email protected]> wrote: > Hi all - > > I've searched for a previous answer to this question, but did not find one. > > In my IOS app, I record a stream to a file. I then want to provide > playback access to that file starting from any offset. The user can listen > to any part of that file by dragging a slider. > > The problem is that the file is continuously growing while the new stream > data arrives & is appended to the file. > > ExtAudioFileSeek says that its behavior is undefined for files that are > open for writing. Also when I play the file back, I might move past a > point which was the end of the file when the file was originally opened. > > I suppose one way I could do it would be to continuously close & open the > file. open to write, then close it. And then open it again to read the > next part of the stream. I can make the file an uncompressed format so > that seeking within the file will be fast. > > Does this sound like a good plan? Any other possibilties? > > > Thank you- > Matt > > _______________________________________________ > 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/oneill707%40gmail.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]
