Convert RGBA8888 buffer to jpeg buffer in memory

  • Hi,
    I've a buffer that contains RGBA888 ,I want to create another buffer that hold the jpeg format according to RGBA buffer with header and data.
    I would appreciate any idea.

  • Hi!

        // prepare image in RGBA8888 format
        QImage img(600, 400, QImage::Format_RGBA8888);
            QPainter painter(&img);
            painter.drawLine(0, 0, 600, 400);
            painter.drawLine(0, 400, 600, 0);
        // save image as JPEG to buffer
        QByteArray ba; // buffer uses ba as its storage
        QBuffer buf(&ba); // we'll use buf as QIODevice;, "JPEG");

  • Dear @Wieland ,
    Thank you so much.

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