Module image_protocol 

Pure terminal-graphics encoders: Kitty graphics protocol and Sixel. Decodes nothing and touches no terminal; callers pass a decoded RgbaImage. Mirrors render/image_render discipline: plain inputs, byte outputs, exhaustively unit-tested.

Functions

encode_kitty

Encode an image as a Kitty graphics-protocol “transmit and display” command. Format f=32 (RGBA), chunked at 4096 base64 chars with the m=1/m=0 convention.

encode_sixel

Encode an image as a Sixel data stream. Quantizes each pixel to the xterm 256-color palette via rgb_to_256 (shared with --truecolor downsampling), then emits palette definitions and run-length-compressed sixel bands.