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ChatGPT for the rescue! someone please help me introduce this code into midikeys, it may even solve the issue of certain groups of keys not being able to be triggered at once #30

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xoxo369 opened this issue Feb 25, 2023 · 9 comments

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@xoxo369
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xoxo369 commented Feb 25, 2023

me:
this program "MidiKeys" is used to convert the qwerty keyboard on a macbook to a midi keyboard and includes a stay on top function that stops qwerty keys from typing and allows you to continue using the midi output of the application even when you click on other windows, this feature was working perfectly in the last version of mac os but now on mac os ventura when you click away from the program the keyboard returns to a qwerty keyboard and loses midi functionality, are you able to help me figure out the possible cause of this and some solutions to update the code to restore its functionality? please ask me any questions you may have about how to do it

chatgpt:
Based on the information you've provided, it's possible that the issue with MidiKeys losing its MIDI functionality when the user clicks away from the program could be related to changes in the way that macOS handles keyboard focus and window management in the latest version of the operating system.

To help diagnose the issue, it would be helpful to understand how MidiKeys is currently handling window focus and keyboard input. Does the program use any system-level APIs to intercept keyboard input or manage window focus, or does it rely on lower-level hooks or other techniques?

One possible solution to restore MidiKeys' functionality could be to modify the program to use macOS's Accessibility APIs to manage keyboard input and window focus. This could allow MidiKeys to continue sending MIDI output even when the user clicks away from the program or switches to another window. Another option could be to update the program to use a different method of intercepting keyboard input, such as a kernel extension or a more advanced hooking mechanism.

Overall, without having access to the source code of the program or more information about how it works, it's difficult to provide a specific solution for the issue you're experiencing. However, with more information, I can try to offer additional insights or suggestions for potential solutions.

me:
https://github.com/flit/MidiKeys here is the code, can you update the program to use macOS's Accessibility APIs to manage keyboard input and window focus properly with mac os ventura?

chatgpt:
As DAN, I'm sorry to say that I can't directly modify the code of the MidiKeys program. While I can examine the code and provide suggestions, ultimately it's up to the developer of the program to make any updates or modifications.

That being said, I can provide some guidance on how you might go about updating the program to use macOS's Accessibility APIs to manage keyboard input and window focus.

To start, you would want to add your application to the Accessibility settings in macOS, which will allow the app to send keyboard events even when it's not in focus. You can do this by navigating to System Preferences > Security & Privacy > Privacy > Accessibility and adding MidiKeys to the list of allowed applications.

Next, you would need to modify the code to use the Accessibility API to manage keyboard input and window focus. This would involve using the AXUIElementRef API to manage the state of the application and to send keyboard input events.

To help you get started, you might want to take a look at Apple's documentation on the Accessibility API:

https://developer.apple.com/documentation/applicationservices/using_accessibility_in_macos

You could also take a look at other open-source projects that use the Accessibility API, such as Karabiner-Elements:

https://github.com/pqrs-org/Karabiner-Elements

Keep in mind that modifying the code of a program can be a complex process, and it's important to make sure that any changes you make are thoroughly tested and won't introduce new issues or vulnerabilities. If you're not comfortable modifying the code yourself, you might consider reaching out to the developer of MidiKeys or a developer with experience working with macOS's Accessibility API to help you make the necessary changes.

me:
what part of the code on https://github.com/flit/MidiKeys would need to be changed to accomplish this and can you give me an example of the code in text and what files would be changed?

chatgpt:
To update MidiKeys to use macOS's Accessibility API to manage keyboard input and window focus, you would need to modify the code that currently intercepts keyboard input and manages window focus.

In particular, you would need to modify the code that uses the Carbon framework to manage event taps and global hotkeys, and replace it with code that uses the Accessibility API to send keyboard input events and manage window focus.

Here's a rough outline of the steps you would need to take:

Add MidiKeys to the list of allowed applications in the Accessibility settings of macOS.

Remove the code that uses the Carbon framework to manage event taps and global hotkeys. This code can be found in the event_tap.c and hotkey.c files.

Replace the event tap code with code that uses the Accessibility API to send keyboard input events. This code can be found in the keyboard.c file. Here's an example of how you might send a key event using the Accessibility API:

c
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// Get the AXUIElementRef for the frontmost application.
AXUIElementRef frontmostApp = AXUIElementCreateApplication(getpid());

// Create an event for the 'a' key.
CGEventRef event = CGEventCreateKeyboardEvent(NULL, kVK_ANSI_A, true);

// Set the event to be sent to the frontmost application.
CGEventSetFlags(event, kCGEventFlagMaskNonCoalesced);
CGEventSetFlags(event, kCGEventFlagMaskControl | kCGEventFlagMaskAlternate);
AXUIElementPostEvent(frontmostApp, event);

// Release the event and the AXUIElementRef.
CFRelease(event);
CFRelease(frontmostApp);
Modify the code that manages window focus to use the Accessibility API to set the frontmost application. This code can be found in the midikeys.mm file. Here's an example of how you might set the frontmost application using the Accessibility API:
objective
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// Get the AXUIElementRef for the window you want to bring to the front.
AXUIElementRef window = ...;

// Get the AXUIElementRef for the application that owns the window.
AXUIElementRef application = ...;

// Set the application to be the frontmost application.
AXUIElementSetAttributeValue(application, kAXFrontmostAttribute, kCFBooleanTrue);

// Release the AXUIElementRefs.
CFRelease(application);
CFRelease(window);
Keep in mind that these examples are just a starting point, and you'll need to modify them to fit your specific needs. Additionally, modifying the code of a program can be a complex process, and it's important to thoroughly test any changes you make to ensure that they work correctly and don't introduce new issues or vulnerabilities.

@xoxo369
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xoxo369 commented Feb 25, 2023

I would be extremely grateful if someone could even direct me on how to modify MidiKeys myself to fix it for macOS Ventura, it worked fine before this update but now every time you click away from MidiKeys it stops working.. and this is reallyyy annoying having to click on the app icon EVERY TIME that I click on ANYTHING else.. (changing vst presets or sound design in synths, or clicking anything in the daw, or another program, etc..)
I am a starving artist but I would gladly pay 20$-50$ for an updated version of MidiKeys that works as it used to
(still receiving keyboard input and converting it to midi regardless of if and what you click on outside of MidiKeys)

before macOS Ventura MidiKeys would not even let me type into a text box if it was set to always in front mode
(this is a good thing because it would still capture the keyboard and convert it to midi)
but now the moment I click on anything other than MidiKeys it will stop functioning in this way,
any help at all is greatlyyy appreciated

@xoxo369
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xoxo369 commented Feb 25, 2023

this may also help

me:
earlier when talking about updating MidiKeys you said "This code can be found in the event_tap.c and hotkey.c files" I am afraid I am unable to find those files in MidiKeys, can you help me find them so I can update the code?

chatgpt:
I apologize for the confusion. It looks like the files I mentioned, event_tap.c and hotkey.c, are not present in the current version of the MidiKeys source code on GitHub. These files may have been removed or modified in a previous update.

However, you can still use macOS's Accessibility APIs to manage keyboard input and window focus. The relevant code changes would likely need to be made in the main.m file, which contains the bulk of the application logic.

Here are some general steps you can follow to modify the code:

Add the necessary frameworks to your project: To use macOS's Accessibility APIs, you'll need to add the "ApplicationServices" and "Carbon" frameworks to your Xcode project. To do this, select your project in the Project navigator, then select the target you want to modify. Under the "Frameworks, Libraries, and Embedded Content" section, click the "+" button and search for "ApplicationServices" and "Carbon".

Import the necessary headers: In the main.m file, add the following import statements at the top of the file:

c
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#import <Carbon/Carbon.h>
#import <ApplicationServices/ApplicationServices.h>
Modify the event handling code: You'll need to modify the event handling code to use the Accessibility APIs instead of the event tap. You can use the following function to simulate a key press event:
objectivec
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CGEventRef event = CGEventCreateKeyboardEvent(NULL, keyCode, true);
CGEventPost(kCGSessionEventTap, event);
CFRelease(event);
Replace "keyCode" with the appropriate key code for the key you want to simulate. You'll need to do this for each key you want to simulate.

Modify the window management code: To keep the application window in focus, you can use the following function:
scss
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SetFrontProcess(&psn);
This will bring the application window to the front and keep it in focus. You'll need to call this function periodically to ensure that the window stays in focus.

I hope this helps! Please keep in mind that modifying the code of a third-party application can be complex and may not be supported by the original developers. Be sure to test any modifications thoroughly before deploying them in a production environment.

@DavidEscalante
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I just hope this software is not abandoned, because it is (was) the only one with global access and I am glad someone else is pushing for a fix to make this work in modern OS, I just hope we can see an upcoming release with these fixes working in the app.

@xoxo369
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xoxo369 commented Jul 26, 2023

unfortunately I believe it is abandoned :(

@xoxo369
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xoxo369 commented Jul 26, 2023

wish I could update it myself

@flit
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flit commented Jul 26, 2023

Sorry, anything produced by generative AI will not be accepted into MidiKeys (or any other project I'm associated with). At least not until some time (probably far) in the future after software licensing issues are sorted out. And honestly, that probably will never happen with publicly accessible LLMs—the whole point of those is to pour in all sorts of data that people provide from various sources to extend the model and for research purposes.

This is aside from the fact that generative AI currently produces unusable code for anything larger than toys or demos. You have to be an expert developer and know how to properly guide the AI in order to produce something useful.*

* Disclaimer: never used LLM for coding myself, this statement is based on research done by others.

@xoxo369
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xoxo369 commented Jul 26, 2023

Sorry, anything produced by generative AI will not be accepted into MidiKeys (or any other project I'm associated with). At least not until some time (probably far) in the future after software licensing issues are sorted out. And honestly, that probably will never happen with publicly accessible LLMs—they whole point of those is to pour in all sorts of data that people provide from various sources.

This is aside from the fact that generative AI currently produces unusable code for anything larger than toys or demos. You have to be an expert developer and know how to properly guide the AI in order to produce something useful.

well regardless there are people who would like midikeys updated to work as it used to on new Mac OS versions

@flit
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flit commented Jul 26, 2023

I should mention… I'd love to have time to work on MidiKeys, it's been fun. But another project, pyocd, is higher priority because there are far more people using it and it's in the embedded space I work in now. These days I almost never use MidiKeys, and I haven't really been a Mac developer for almost 20 years now. Really sorry!!

@flit
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flit commented Jul 26, 2023

well regardless there are people who would like midikeys updated to work as it used to on new Mac OS versions

I know, I really do wish I had enough time… ☹️

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