Crate otf_pixels_codec_gif 

GIF codec for otf-pixels, implemented from scratch.

Decode covers the whole format: all frames, both interlace layouts, transparency, and every disposal method. Encode is single-frame with palette quantization, which is SPEC §Formats’ stated v1 scope — animation pipelines are v2.

Frames and the engine

Decoder yields one image, so GifDecoder presents the first frame composited onto the canvas. Every existing pipeline therefore works on a GIF unchanged, and the engine stays frame-unaware.

Callers who want the animation use GifDecoder::next_frame, which walks the remaining frames and applies disposal between them. That keeps “animation pipelines are v2” honest: the decode is complete, and only the graph integration is deferred.

Structs

Frame

One decoded frame, with the animation metadata that came with it.

GifCodec

The GIF entry in a sniffing registry.

GifDecoder

Decodes a GIF stream.

GifEncoder

Encodes a single-frame GIF.

GraphicControl

State from a graphic control extension, applying to the next image.

ImageDescriptor

An image descriptor: where a frame sits on the canvas and how it is coded.

Palette

A colour table of at most 256 entries.

Screen

The logical screen descriptor: the canvas every frame is drawn onto.

Enums

Disposal

How the canvas is treated after a frame is displayed (§23.c.iv).

Dither

How colour error is handled when mapping pixels to a palette.

Functions

build_palette

Build a palette of at most size entries for pixels.

probe

Whether prefix starts with a GIF signature.

quantize

Map pixels onto palette, returning one index per pixel.