- Is there a way to check with code that b4a is downsampling an image ?
- Is it possible to set off this downsampling or know the previous image width and height.
Downsampling happens when there isn't enough memory to load the bitmap. Instead of crashing the process it tries to downsample the image.
You should avoid loading large images with LoadBitmap. Instead load them with LoadBitmapSample. Otherwise a single image can require more memory than is available.