@artemious3 said in Creating QIODevice with infinite data:

I'd like to know if you can see some problems with this implementation,

On a cursory inspection...
Let's say your audioData buffer size is 1024 bytes, for example, and the user requests a read of 2048 bytes (because your bytesAvailable says that is available). This line:

currentDataPtr = std::copy(audioData, audioData + remainingBytes, targetData);

will try to copy 2048 bytes out of a 1024 byte buffer.

You should also look at the QIODevice::bytesAvailable() docs regarding what this should return.

And the setBuffer() function you use has exact the same problem.

@SGaist I tried ffmpeg and vlc sadly with those libraries there were 2 seconds of delay. I want stream to be realtime. Plus my friend needs to access each frame in order to process it. With QT we can do such thing thanks to QByteArray and QBuffer.

This works

QBuffer buffer; buffer.open(QIODevice::WriteOnly); QImage qp(fileName()); qp.save(&buffer, "PNG"); QString base64 = buffer.data().toBase64();

https://stackoverflow.com/questions/69165252/how-to-convert-png-image-into-base-64-format-in-qt

@hariny , @onek24 Since this thread was not resolved;
the buffer is not open !!!
your are missing two lines of code:

buffer->open(QIODevice::ReadOnly); buffer->seek(0);