swill

swill is a work-in-progress sixel library. I was dissatisfied with the existing libsixel, which seems primarily designed not as a general-purpose library, but rather to implement its demo applications. For example, the sixel_encoder object provided in the public API actually handles img2sixel's option processing, and is only capable of outputting to a file or stdout. The lower-level sixel_encode provided in the public API is also heavily focused on outputting to files. There wasn't any way provided to get the sixel as a buffer -- or at least not any documented means.

swill therefore has the following priorities:

• Provide essential sixel conversion capabilities, and leave handling the data to the developer.
• Publically provide general-purpose methods, rather than providing "batteries-included" interfaces that might be unsuitable for some uses.
• Be thoroughly and clearly documented.