PPDs generated and installed, but now what? (Filter definitions)

[Anonymous]

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> In order to make a driver for the Seike Smart Label Printer Series, I managed to create a seiko-slp-<*>.drv file and to compile it to the different seiko-slp-<*>.ppd files, and I can install them in the cups system, then set paper sizes and other options just fine.
>
> But now what?
>
> The printer is neither PCL nor ESC/P, but some relatively simple custom format, the specification of which can be downloaded with the Smart SLP SDK from their web site, which I have.
>
> Where do I find the interface specification which I need to create a filter for the low-level SLP printer language?
>
> And hopefully some models I can base my filter on?
>
> Since I do not really know C yet, I plan to make a python script first. It could accept raster image data via STDIN and produce the resulting slp language commands and data via STDOUT. But I need the specification of the interface which I did not find so far.
>
> AFAIUnderstand, the interface seems to reside in these parts of the example (of the docs):
>
>  // Include ESC/P driver definitions
> #include <escp.h>
>
> // Specify that this driver uses the ESC/P driver...
> DriverType escp
>
> // Specify the driver options via the model number...
> ModelNumber ($ESCP_ESCK $ESCP_EXT_UNITS $ESCP_EXT_MARGINS $ESCP_USB
>              $ESCP_PAGE_SIZE $ESCP_RASTER_ESCI)
>
> Is this right? So how do I interface a command line tool with this?
>
> And what about these "commandtoescpx" and "rastertoescpx": do I have to create both types?
>
> I made the following statements in my .drv file:
>
> // Driver Definition
> DriverType custom
>
> // Each filter provided by the driver...
> Filter application/vnd.cups-raster 100 rastertoseikoslp
>
> But now, how do I create the rastertoseikoslp filter?
>
> The documentation in cupsddk-1.0/doc/cupsddk.html is not clear to me and seems to lack the oppropriate info. A hint to the info about the filter (and model filters) would be nice.
>
> Thanks
> Peer
>