Module content 

Record content, canonical hashing and picture headers. Use the store borrowed through SurfaceCx::content or LaunchInput::content so the host binds reads and writes to the resource’s content lane.

Structs

ContentStore

An app’s handle to binary content: cheap to clone, passed to whatever needs it.

ImageFormat

A picture format, named by its file extension and media type.

Functions

hash_bytes

Hash bytes the way every content address in the system is derived: BLAKE3, lower-case hex.

image_format

The picture format bytes start with, from the signature alone: PNG, JPEG, GIF, WebP or SVG. Unlike [sniff] it needs no complete header, so it also answers for a truncated prefix.

image_size

A PNG, JPEG, GIF or WebP picture’s format and intrinsic width and height, read from its header. None when bytes is no such picture or its header states no size.

valid_hash

Whether hash has the shape of a content address (64 lower- or upper-case hex digits). Addresses arrive from documents and peers, so anything else is refused before it can name a path.