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How to display a large JPG image?

Question asked by mich.lei on Jun 14, 2018


I have a STM32F746 Discovery board.  I want to show jpg images on its display as background.

There is an example for small images that works, but I don't understand the part where something is actually shown. Buffers, what buffers?

Then there CubeMx which has Libjpeg library and LTDC somewhere. But there is no information of how to use the display. And the code looks unfinished or thin.

And there is the LTDC example I think. Which stores BMP images in ram and then shows them. Is this the way JPG are used also. And I wonder how compatible examples and CubeMX code are.