update for PT-P950NW

[michaeleekk]

Thank you very much for all the efforts on label printers ! I just made it worked with PT-P950NW and 18mm labels and so I'm trying to contribute back the setting that I used.

Originally I failed without the compression flag. The following is the results,

# works (left)
brother_ql_create -c -m PT-P950NW --label-size 18 ~/Desktop/label_tests/mspaint_test_rotated.png > mspaint_gen3.bin
brother_ql --debug -m PT-P950NW -p usb://0x04f9:0x2086/000M7Z552861 send mspaint_gen3.bin

# works (left)
brother_ql --debug -m PT-P950NW -p usb://0x04f9:0x2086/000M7Z552861 print -c -l 18 ~/Desktop/label_tests/mspaint_test_rotated.png

# doesn't work (right)
brother_ql --debug -m PT-P950NW -p usb://0x04f9:0x2086/000M7Z552861 print -l 18 ~/Desktop/label_tests/mspaint_test_rotated.png

This is the original image,

There are a few points that I would like to mention when I was playing with the commands,

• The number_of_copies update in the opcode list is because when I tried to analyze the binary generated by the printing utility, it found an unknown command. Maybe it's a new command that is only on PT-P900 series ?
• Originally I had the image in landscape, width of the image is longer than height, as I thought that's the default way, or at least the auto rotate will help me do the tricks. In the end, I just rotated the image manually.
• As PT-P950NW changed to 360dpi x 360dpi, I was confused by those converting to 300dpi wording in the readme and in the code, but I realized that the code is just trying to resize the image to the target width pixel.

Thanks again for the nice code base :)

[resba]

I ended up getting this to work by making a similar model using the pt24 as a base but changing the variables to the ones you used for 18mm tape to upscale to 360dpi. +1 @michaeleekk thank you for this!

https://github.com/resba/brother_ql/blob/master/brother_ql/labels.py#L108