Hi Christian, Thank you for the response. Yes i tried setting Mix and Max to the same value, which always resulted in the control not displaying at all on the generic view. I also tried using |=, and i have just tried setting kAudioUnitParameterFlag_HasCFNameString and kAudioUnitParameterFlag_ValuesHaveStrings. Still nothing.
Apparently Apple just "broke" this option for us in the latest MainStage and Logic. I also checked various audio units, that come with Logic Pro, and none of them had a button on their generic view. 2015-01-19 18:50 GMT+02:00 Christian Rober <[email protected]>: > These are just a few shots in the dark: > > 1. Have you tried setting the max value to the same thing as the min > and the default? I only suggest this because of Mr. Stewart's > comment, in the linked post, about state-less parameters (i.e. > booleans with write-only flag) being perceived by the generic view as > a button. Maybe the host checks the min vs. the max and when it sees > a difference between the two it decides the user needs a state-ful > control. > > 2. Have you tried different combinations of > kAudioUnitParameterFlag_HasCFNameString and > kAudioUnitParameterFlag_ValuesHaveStrings? Maybe the view is trying > to create a button, but is expecting one or both of those flags to be > set. Since it doesn't see them, it might just create an empty button, > or skip creating a button altogether. You may be clobbering those > string flags when you set it to writable. You may just need to set > the writable flag using " |= " instead of " = ". > > --Christian > > On Mon, Jan 19, 2015 at 2:05 AM, Nick <[email protected]> wrote: > > Hello > > I had asked this already, but apparently the message got lost. > > Anyways, sorry if you're reading this a second time. > > > > I have created an Audio unit with an accompanying Cocoa view. > > > > An ordinary audio unit, that we can add to a Logic or MainStage project, > > mainly consists of two parts - an Audio Unit Kernel and an Audio Unit > View, > > and they are designed to be separate things and "communicate" by changing > > parameters. > > > > The Audio Unit view can be presented by the host (by Logic Pro X, for > > example) either as a nicely drawn cocoa view > > (http://rghost.net/60432973/image.png), which is an NSView from a xib, > > loaded from the AudioUnit's bundle, or you can select in a drop-down menu > > the "Controls" option (http://rghost.net/60432978/image.png) and get an > > ascetic dynamically generated view (http://rghost.net/60432987/image.png > ). > > This dynamically generated view (or "Generic" view) is generated by the > host > > application, based on what your audio unit's function returns in its > > AudioUnitParameterInfo parameter: > > > > OSStatus GetParameterInfo(AudioUnitScope inScope, AudioUnitParameterID > > inParameterID, AudioUnitParameterInfo &outParameterInfo) > > > > So if you return the following, you'll get a checkbox with the title "Hey > > there": > > > > AUBase::FillInParameterName (outParameterInfo, > > CFSTR("Hey there"), false); > > > > outParameterInfo.unit = > kAudioUnitParameterUnit_Boolean; > > > > outParameterInfo.minValue = 0; > > > > outParameterInfo.maxValue = 1; > > > > outParameterInfo.defaultValue = 0; > > > > outParameterInfo.flags = > > kAudioUnitParameterFlag_IsWritable | kAudioUnitParameterFlag_IsReadable; > > > > > > This was the introduction. > > Now back to the question. > > > > I would like to have a Push Button on my autogenerated by the host > "Generic > > View". > > And I can't figure out how to do this. > > > > My research showed that this used to be possible by declaring a write > only > > boolean parameter in GetParameterInfo. Here's some links that prove this: > > > > http://lists.apple.com/archives/coreaudio-api/2005/Jun/msg00023.html > > http://lists.apple.com/archives/coreaudio-api/2005/May/msg00280.html > > http://lists.apple.com/archives/coreaudio-api/2005/Jul/msg00032.html > > > > The problem is that when I declare a write only boolean param, no control > > appears in the Generic view of Logic Pro X or Mainstage 3. > > If I declare a read only boolean param, all I see is a disabled control > with > > "< off >" text on it. > > If i declare a read-write boolean param, I am getting a check box (the > last > > is the correct behavior) > > > > Apart from the kAudioUnitParameterUnit_Boolean, I have tried other types > > (kAudioUnitParameterUnit_Indexed, kAudioUnitParameterUnit_Generic), tried > > setting the "kAudioUnitParameterFlag_IsWritable" and > > "kAudioUnitParameterFlag_IsReadable" together and separately. To no > avail - > > I can't manage to get a button on the generic view. > > > > So how to get a regular push button on generic view? > > > > > > > > _______________________________________________ > > 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/recapitch%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]
