[Digikam-users] [HS] use of Canon seplhy 910

[jdd]

Hello,

This post is partly HS because it do not concern digikam, but I don't 
see where I can find a larger Linux photo group.

The photo printer Canon Selphy CP 910 is not (yet) supported by linux, 
because (Gutenprint dixit) Cnon changed the way the printer discusses 
with the computer, so even using the previous drivers is not possible. 
This is only partially true, but is not my subject.

One can use the printer because it prints directly from sd card (or usb 
device, I guess), so no computer is really necessary.

But, some time, the jpeg image is not read at all. The card is readable, 
but not all images.

it's usually enough to read it (for example with showfoto), make any 
minimum change to be able to save it again et then it works. But it's 
unfriendly.

I can't find any specification on the Canon web site about any jpg 
format. I'm sure it's not being too big or too small, because I could 
print smaller and bigger images than the one with problem.

I can't share ther image (family), but here are the mediainfo 
indications (below)

any idea?

thanks
jdd

bad image:

General
Complete name                            : 
/data/multimedia/temp/DSC02619-me-bad.jpg
Format                                   : JPEG
File size                                : 205 KiB

Image
Format                                   : JPEG
Width                                    : 800 pixels
Height                                   : 600 pixels
Color space                              : YUV
Chroma subsampling                       : 4:2:2
Bit depth                                : 8 bits
Compression mode                         : Lossy
Stream size                              : 205 KiB (100%)


same with color change in showfoto:

General
Complete name                            : 
/data/multimedia/temp/DSC02595-me.jpg
Format                                   : JPEG
File size                                : 134 KiB

Image
Format                                   : JPEG
Width                                    : 800 pixels
Height                                   : 600 pixels
Color space                              : YUV
Chroma subsampling                       : 4:2:2
Bit depth                                : 8 bits
Compression mode                         : Lossy
Stream size                              : 134 KiB (100%)