nx_webp_vp8l.nx

nx_webp_vp8l.nx -- sovereign WebP VP8L (lossless) pixel decoder. THE LAST MILE. WebP already reaches four layers deep in this tree: sniffed by nx_media_sniff, sized by nx_img_dims, negotiated by nx_cms_image and transfer-validated by nx_manga_get. Nothing turned the bitstream into pixels. This does. VP8L is, in order: a 5-byte header, an optional stack of up to 4 reversible transforms, an optional colour cache, an optional meta-Huffman image that selects which of N Huffman groups applies to each 2^k block, and then one LZ77 stream over ARGB pixels. Decode runs the stream, then UNDOES the transforms in reverse order. Composes: nx_bitstream (LSB-first, matches VP8L exactly), nx_webp_huff (canonical trees incl. the zero-bit single-symbol case). genealogy_id: webp_lossless_bitstream_spec_2012 lineage_id: nx_webp_vp8l_v1 license_tier: ORIGINAL