loadFromData() of QImage crash in case of .gif loading

[santosh.kumar]

Your image header contains zeroes while it should contain a proper GIF header that informs about things as the dimensions of the image, depth, then the color map, etc.
To me it seems you are only passing (partial) pixel data and this is not enough. Either create a proper gif header and include it in your buffer or create the QImage object manually and use QImage::bits() to fill it with data in a format compliant with the pixel format (e.g. premultiplied RGBA) of the image you passed when constructing your QImage object.

/*Your image header contains zeroes while it should contain a proper GIF header that informs about things as the dimensions of the image, depth, then the color map, etc.*/

In our code, buffer contains the GIF data in hex format, and ofcourse it contains the Starting Header of GIF in Hexformat.


/*To me it seems you are only passing (partial) pixel data and this is not enough.*/
No we are sending complete size of GIF data up to files size.

/*or create the QImage object manually and use QImage::bits() to fill it with data in a format compliant with the pixel format (e.g. premultiplied RGBA) of the image you passed when constructing your QImage object.*/

Kindly we can work in last sent solution. But we have no QImage's object so how we can

uchar* imagedata = image.bits();
we have buffer up to Imagesize, we can use loadFromData() in this case.

Can I use like this

QImage image;
uchar *data1 = QImage::bits();
memcpy(data1,pBuffer,size);
loadFromData(data1,size,"GIF");

QImage image;
uchar *data1 = QImage::bits();
memcpy(data1,pBuffer,size);
loadFromData(data1,size,"GIF");

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Kindly sent one example for this...