Hello,
imho I found an error in the jpeg image writer method. I have observed
that on writing images of this type the resolution I have set in my
Image object is not visible in the written file. After inspection I
think that a couple of code lines in OSGJPGImageFileType.cpp at line 532
should be moved after the jpeg_set_defaults(&cinfo); call.
I.e. it should be something like...
/*
cinfo.density_unit = 1; // dpi
cinfo.X_density = UInt16(pImage->getResX() < 0.0f ?
pImage->getResX() - 0.5f :
pImage->getResX() + 0.5f);
cinfo.Y_density = UInt16(pImage->getResY() < 0.0f ?
pImage->getResY() - 0.5f :
pImage->getResY() + 0.5f);
*/
jpeg_create_compress(&cinfo);
DestinationManager *destinationManager =
new ((*cinfo.mem->alloc_small)(j_common_ptr(&cinfo),
JPOOL_IMAGE,
sizeof(DestinationManager)))
DestinationManager(&cinfo, os);
cinfo.dest =
reinterpret_cast<jpeg_destination_mgr*>(destinationManager);
jpeg_set_defaults(&cinfo);
cinfo.density_unit = 1; // dpi
cinfo.X_density = UInt16(pImage->getResX() < 0.0f ?
pImage->getResX() - 0.5f :
pImage->getResX() + 0.5f);
cinfo.Y_density = UInt16(pImage->getResY() < 0.0f ?
pImage->getResY() - 0.5f :
pImage->getResY() + 0.5f);
cinfo.image_width = pImage->getWidth();
cinfo.image_height = pImage->getHeight();
cinfo.input_components = pImage->getBpp();
cinfo.in_color_space = (pImage->getBpp() == 1) ? JCS_GRAYSCALE :
JCS_RGB;
Could someone please check and change the code base.
Best,
Johannes
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