How to generate audio sample by sample in real time?

[Simmania]

Hi,
I Need to generate audio output sample by sample. For instance to generate a sinewave on left and or right channel of the headphone.
Is that possible?
Is there an example available for this?
When searching for audio, I can find how to play a sound file. But i need to be able to generate the samples my self. In real time.

[SGaist]

Hi,

If using Qt 5, use QAudioOutput::start and write the audio samples you generate in the device.

[Simmania]

But how do I know how much samples to write? So how is are the samples synchronized?
Can I read somehow how many samples still in the buffer?
Or can I get connect a signal to generate the next N samples?

[SGaist]

You know the audio format you use, so adapt to that one.

I don't think you can ge that I formation.