Memory leak while converting images with FreeImage.Net

Question

When loading the image with the nuget package, (FreeImage 3.18.0.0) it does not unload memory even if '''dib.SetNull()''' was set.

var dib = FreeImage.Load(FREE_IMAGE_FORMAT.FIF_PNG, pngFile.FullName,
FREE_IMAGE_LOAD_FLAGS.DEFAULT);
FreeImage.Save(FREE_IMAGE_FORMAT.FIF_JP2, dib, jpgFile.FullName, FREE_IMAGE_SAVE_FLAGS.JPEG_OPTIMIZE);
dib.SetNull();

score 2 · Accepted Answer · answered Aug 27 '21 at 08:08

2

FreeImage has additional copy of image you need to unload. FreeImage_Load Memory Leak

try: FreeImage.Unload(dib);

var dib = FreeImage.Load(FREE_IMAGE_FORMAT.FIF_PNG, pngFile.FullName,
FREE_IMAGE_LOAD_FLAGS.DEFAULT);
FreeImage.Save(FREE_IMAGE_FORMAT.FIF_JP2, dib, jpgFile.FullName, FREE_IMAGE_SAVE_FLAGS.JPEG_OPTIMIZE);
FreeImage.Unload(dib);
dib.SetNull();

answered Aug 27 '21 at 08:08

Nasenbaer

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While memory was increased over the time up to crashing computer system, now all is working perfect without memory leak anymore. Thank you. – Tib Schott Aug 27 '21 at 10:02
1

I would put it in a `try/finally` to guarantee unload – Charlieface Aug 27 '21 at 10:28

Memory leak while converting images with FreeImage.Net

1 Answers1