***************************************************************************



  Unified Gutenprint/CUPS Backend for various Dye-Sublimation photo printers



  (c) 2007-2013 Solomon Peachy <pizza@shaftnet.org>



  The latest version can be found at

  

    http://git.shaftnet.org/cgit/selphy_print.git



  For a list of known bugs and development plans, see:



    http://bugs.shaftnet.org/index.php?project=4



 ***************************************************************************



  Known Supported Printers:



   Canon SELPHY ES series

   Canon SELPHY CP series

   Kodak Professional 1400

   Kodak 605 Photo Printer

   Kodak 805 Photo Printer

   Kodak 6800 Photo Printer

   Kodak 6850 Photo Printer

   Mitsubishi CP-D70x series

   Shinko/Sinfonia CHC-S2145 (aka "S2")

   Sony UP-DR150



 ***************************************************************************

  Compilation:



     You will need libusbx to build this tool.



     Fedora/RedHat:

	yum install libusbx-devel

     Debian/Ubuntu

	apt-get install libusbx-dev



   And all you need to do after that is type 'make'



 ***************************************************************************

  CUPS backend usage:



   The simple method is to use Gutenprint 5.2.10 or newer, which bundles 

   (possibly older versions of) this backend.  Without Gutenprint to

   rasterize the print data, this backend is useless.



   The backend is called 'gutenprint+usb', and must be installed with 0700

   file permissions and owned by root in order to function properly.



   To install this backend for use with CUPS, simply type 'make install'.



   You may need to restart CUPS afterwards.



   DEVICE_URI=someuri \

       gutenprint+usb job-id user title num-copies options [ filename ]



 ***************************************************************************

  Standalone usage:



    This backend is set up as a multi-call executable; that is to say

    behaivor changes based on the name used to invoke the executable.

    When compiled, a set of symlinks are created, corresponding to each

    of the internal backends.  Alternatively you may set the BACKEND

    environment variable to force a specific backend to be used:



        BACKEND=backend \

    	  gutenprint [ args ]



      (OR)

 

	backend [ args ]



     That said, all internal backends support these invocation options



  	backend filename

	backend - < filename

	somecommand | backend -

        backend [ backend-specific-argument ]



      The 'filename' here refers to the raw spool data generated by

      Gutenprint (eg via its gimp plugin) or the Windows print-to-file 

      output.



      If there is more than one device present that the backend handles,

      the backend will choose the first supported device it finds. If you

      wish to specify the specific device when operating in standalone 

      mode, set the 'DEVICE' environment variable to the target device's

      serial number. For example:



  	  DEVICE=N782 backend filename



      All backends support an additional operational mode, to test out

      unknown models. To use this mode, specify the VID, PID and its 

      type as environment variables. For example:



 	  EXTRA_VID=04a9 EXTRA_PID=3ab1 EXTRA_TYPE=3 backend filename



	EXTRA_VID is the USB VID, in hex

	EXTRA_PID is the USB PID, in hex

	EXTRA_TYPE is:	3 for SELPHY CP790

		   	4 for SELPHY CP520 (or other CP-series model)



      If you have a model the spooler doesn't recognize but it works with

      a VID/PID/TYPE specification, please let me know via e-mail.



      Finally, some backends may support additional arguments; see below:



 *************************************************************************** 

  BACKEND=canonselphy



   Verified supported printers:

  

     ES1, ES2, ES3, ES30, ES40, CP-100, CP-200, CP-300, CP-330, CP400, 

     CP500, CP510, CP710, CP720, CP730, CP740, CP750, CP760, CP770, CP780, 

     CP800, CP900



   Unverified/untested, but should work:



     ES20, CP-220, CP530, CP600, CP810



   Semi-supported (has problems)



     CP-10



   NOT currently supported by libusb backend:  (USB PIDs unknown) 

	

     CP520, CP790



   This backend does not support additional commands



 *************************************************************************** 

  BACKEND=kodak1400



   Verified supported printers:



     Kodak 1400

     Kodak 805



   This backend supports additional commands:



      kodak1400 [command [arg] ]



   Valid commands:



     -stc filename      Set tone curve [1]



  Notes:



    [1]  Format of curvedata file:



    	 256 entries each of Yellow, Magenta, Cyan mappings:

	 Values are unsigned 16-bit big endian, between 0 and ???

	 (unsure as to the bit usage)



 *************************************************************************** 

  BACKEND=kodak6800



   Verified supported printers:



     Kodak 6800

     Kodak 6850



   This backend supports additional commands:



      kodak6800 [command [arg] ]



   Valid commands:



     -qtc filename      Query tone curve [1]

     -stc filename      Set tone curve   [1]



  Notes:



    [1]  Format of curvedata file:



    	 256 entries each of Yellow, Magenta, Cyan mappings:

	 Values are unsigned 16-bit big endian, between 0 and 16383

	 (ie 14-bit)



 *************************************************************************** 

  BACKEND=kodak605



   Verified supported printers:



     Kodak 605



   Valid commands:



     -qs                 Query printer status (Not fully decoded yet)

     -qm		 Query supported media (Not fully decoded yet)

     -stc filename       Set tone curve [1]



  Notes:



    [1]  Format of curvedata file:



    	 256 entries each of Yellow, Magenta, Cyan mappings:

	 Values are unsigned 16-bit big endian, between 0 and ???

	 (unsure as to the bit usage)



 *************************************************************************** 

  BACKEND=shinkos2145



   Verified supported printers:



     Shinko/Sinfonia CHC-S2145 (aka "S2")



   Development was sponsored by:



        LiveLink Technology [ www.livelinktechnology.net ]



   In order to use this backend, you will need to ensure the printer is

   configured to use the 'DRV' (as opposed to 'DLL') operating mode.  See 

   the printer documentation for details on how to set this.



   This backend supports additional commands:



      shinkos2145 [command [arg] ]



   Valid commands:



     -qs                Query printer status

     -qm		Query media information

     -qf		Query firmware version

     -qe		Query Error log

     -qu		Query User String

     -qtu filename	Query User tone curve (stored in flash)  [2]

     -qtc filename	Query Current tone curve (stored in RAM) [2]

     -su  somestring    Set User String to 'somestring'

     -stu filename      Set User tone curve (stored in flash)    [2]

     -stc filename      Set Current tone curve (stored in RAM)   [2]

     -pc  id            Cancel print job 'id'                    [1]

     -fl  		Flash printer LEDs for five seconds.

     -ru		Reset User tone curve to default         [3]

     -rp		Reset printer to factory defaults

     -b1		Enable printer control panel buttons

     -b0		Disable printer control panel buttons

     -f 		Enable fast return                       [4]



  Notes:



    [1]  Job ID is the Internal Job ID (reported via status)

    	   This cancels a multi-copy print job.

	   To see which jobs are active/pending, see the output of the

	   '-qs' command, specifically the 'Bank' output.



    [2]  Format of curvedata file:



	 256 entries each of Yellow, Magenta, Cyan mappings:

	 Values are unsigned 16-bit big endian, between 0 and 2047 

	 (ie only 11 bits used)



    [3]  Default printer tone curve is a linear 'val << 3'



    [4]  This terminates the backend as soon as the printer has acknowledged

         the print job, without waiting for the print job to complete.

         This can also be enabled by setting the 'FAST_RETURN' environment

         variable.



 *************************************************************************** 

  BACKEND=sonyupdr150



   Verified supported printers:



    Sony UP-DR150



   Theoretically supportable printers: (Unknown USB PID)



    Sony UP-DR200



   This backend does not support additional commands



 *************************************************************************** 

  BACKEND=mitsu70x



   Theoretically supported printers:  (Untested)



    Mitsubishi CP-D70DW

    Mitsubishi CP-D707DW



   Theoretically supportable printers: (Unknown USB PID)



    Mitsubishi CP-K60DW-S



   Valid commands:



     -qs                 Query printer status (Not fully decoded yet)