Re: Thunderbolt port audio programmability
> On Mar 12, 2020, at 5:31 PM, Carl Hoefs > wrote: > > In iOS, what is the current way to generate precise audio tones? > AVFoundation? CoreAudio? AudioUnits? AudioUnits. It's been a long time since I worked with that API, but I'm pretty sure I recall some sample code showing a generator AU that emits a sine wave. —Jens ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Thunderbolt port audio programmability
On Thu, 12 Mar 2020 10:27:25 -0700, you wrote: >I'm looking at creating an iPhone/iPad app that acts as a dual-channel >waveform generator. > >I see two options for the output signal medium: > (a) using the audio jack (on suitable devices), or > (b) using the Thunderbolt port As already noted in other messages, there is no Thunderbolt port (at least not yet). But you can't assume a lightning connector/port either, as the iPad Pro's use a USB-C connector/port. So depending on the use you envision, you might be best going with whateaver audio is available whether it is an audio device connected through the lightning/USB-C ports or via Bluetooth. ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
How to ask user to grant access ?
PS:
So far, I am not even getting permissions within the same app invocation.
What I have tried is, when I hit an alias that is also a directory,
I open an NSOpenPanel with setDirectoryURL: resolved URL of the alias.
The user hits OK, then I try to set up an enumerator with that URL.
However, the enumerator's error handler gives me
Error Domain=NSCocoaErrorDomain Code=257 "The file “images” couldn’t be
opened because you don’t have permission to view it."
("images" is the directory name I was trying to enumerate.)
I have checked that the resolved URL of the alias does point to the correct
directory.
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How to ask user to grant access ?
I am doing a directory enumeration , collecting a list of files for accessing them later. When I encounter aliases / symlinks, I would like to follow them. As far as I understand, in a sandboxed app, I need to ask the user to grant my app access to the directories the aliases point to. I guess I have to do that using an NSOpenPanel. I can point the openPanel to the directory I am asking permission for, but can I prevent the user from navigating away from that directory? Thanks a lot in advance. Best regards, Gabriel ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
