mirror of
https://github.com/storytold/lightcraft.git
synced 2026-11-02 06:27:53 -06:00
midasmatterhorn
8a8fe7e098
A proxy stored the pixels and the camera tone curve only. An edit that reads the file's own facts — a Kelvin white balance through the camera colour model, Camera local tone mapping's gain table map, an AI mask's semantic matte — rendered differently once the original went offline, because the catalog's header facts cannot carry them. The facts now ride in a tail after the JPEG (a length-prefixed JSON blob, then one byte plane per matte), counted from the file's end so a header rewritten in place keeps pointing at it; is_valid requires the JPEG to end right before the tail. ENCODE_VERSION becomes 3, so proxies an older build wrote are rebuilt when their original is readable (offline ones keep their older look, as before). smart::encode now takes the source's SourceInfo and decode returns the restored one. Tests: - tests_import::smart_previews_keep_the_decoder_facts_offline_edits_need: a proxy's own pixels and facts render bit-identically offline for a Kelvin white balance (6144/6144 pixels differ before), a stored sky matte, and a gain table map - smart::tests::facts_and_mattes_travel_with_the_proxy: the facts and mattes round-trip; a proxy cut inside its tail is invalid; an old proxy, and one whose header lies about the tail, read as no facts