memory leak on QtGui.QLabel.setPixmap

[hexxter]

Hi,

i grep frames from an webcam and display it on a QLabel and it works, but i see an memory leak.

class CameraDisplay(QtGui.QLabel):
    def __init__(self):
        super(CameraDisplay, self).__init__()

    def updateFrame(self, image):
        pm = QtGui.QPixmap.fromImage(image)
        self.setPixmap(pm)

del pm after set has nothing fixed, clear the pixmap cache has not fixed it....

i found this posting and it shows my problem: http://www.mzan.com/article/36663774-qimage-memory-leak.shtml

Info:
Python3.4.3 virtualenv
host: ubuntu 14.04 64bit

[techtonik]

How do you track leaking memory?

[hexxter]

Am 05.05.2016 um 05:11 schrieb anatoly techtonik:

How do you track leaking memory?

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#144 (comment)

Hi,

it was not so easy i reduced the code and i see it by only comment out
one line. But the setPixelmap was wrong i found it on:

#145

i postet my short testprogram. if you comment "image =
QtGui.QImage(data, size[0], size[1], QtGui.QImage.Format_ARGB32)" out
top shows a normal memory usage.
But with this it you see the leak.

BR Alexander

[techtonik]

I see. I thought you were using some automated tool like https://github.com/google/sanitizers/wiki/AddressSanitizerLeakSanitizer

[mutenroshi2]

pm = qimage2ndarray.array2qimage(image) #Solution for the memory leak

[techtonik]

@Ragu25 it is tracked in #145