My App (not)

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Hi Rui and all,

I hope you don't mind me asking. I have been trying to make an App for myself in Qt. Failure several times. I downloaded and studied your Qtractor source code (Amazing work by the way), I got so far then got lost. I have an 8 in Audio Card and I have some nice Licensed Channel Strip VST's.

I'd like a QtWindow, (soundcard detect) audio in ->myvstchannel strip-> audio out. The channel strip to be hard coded, not added as a Plug in, like in a Daw.

Could you please give me a clue, I've spent months trying to figure it out!

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hi IanB, one hell of a question you got there :) i'm afraid i can't really answer whether in full or in part, but I can try.

First you probably have to distinguish or separate your problems there:

a. is it your problem to come up with a Qt/widgets application in the first place?
b. or is it that you don't figure how to program/interface/integrate the audio/soundcard/pcm device into a Qt/C++ application?
c. all of the above but those should be separate problems anyway.

To solve problem a. looking at Qtractor is not going to help you much just because it's a horrendous bloat of code, most of it highly specific to its own purposes (an audio/MIDI multi-track sequencer, remember?). You should have picked from the plenty of Qt examples, to begin with.

To approach b. you'll have to come up with a call on whether you wish to rely on JACK or ALSA or whatever. I'd recommend you to RtAudio for a start. It's kinda cross-platform enough so you don't have to learn the hell of specifics to JACK, ALSA, Windows WASAPI, OSX CoreAudio, etc.

hth.
cheers

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Super impressed you replied Rui, I've been asking around, Qt forums couldn't help.The guys there are very helpful, but aren't Audio wizards. I had to show them Qtractor!! I have the SteingbergSDK, JUCE and Qt.

Mostly b. above. Getting the Channel Strip VST into a Qt widget, would be my biggest hurdle. I was thinking of Windows, but I use Linux too

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I only know the Juce basics. building a basic app is easy with the "Projucer", but I'm more familiar with Qt. There is actually a JUCE/Qt exporter, which I've used several times, but it's old and un-maintained. And if I needed any UI controls, I certainly wouldn't use JUCE controls, and importing the Juce Libs into a Qt project is tricky! But, as I don't want to take up your precious time, I'll keep on until I get it! Obrigado!

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