Module image_codecs 

Image format decoders: PNG, JPEG (baseline DCT), GIF (87a/89a)

All decoders are no_std-compatible, use integer/fixed-point math only (no floating point), and produce pixel buffers suitable for the desktop compositing pipeline.

Supported Formats

• PNG: Full critical chunk support (IHDR, PLTE, IDAT, IEND), ancillary chunks (tRNS, gAMA), DEFLATE decompression, all 5 filter types, Adam7 interlacing, color types 0/2/3/4/6, bit depths 1/2/4/8/16
• JPEG: Baseline DCT (SOF0), Huffman entropy coding, integer IDCT, YCbCr-to-RGB via fixed-point, chroma subsampling 4:4:4/4:2:2/4:2:0, restart intervals
• GIF: 87a/89a, LZW decompression, global/local color tables, animation frames, disposal methods, transparency, interlaced rendering

Re-exports

pub use gif::decode_gif;

pub use gif::DecodedGif;

pub use gif::GifDisposal;

pub use gif::GifFrame;

pub use jpeg::decode_jpeg;

pub use png::decode_png;

Modules

gif

GIF decoder (87a/89a) with LZW decompression.

jpeg

JPEG decoder (Baseline DCT, SOF0).

png

PNG decoder with full DEFLATE/zlib decompression.

Structs

DecodedImage

A decoded image frame with RGBA8888 pixels.

Enums

ImageCodecError

Errors produced by the image decoders.

ImageCodecFormat

Detected image codec format.

Functions

decode_image

Auto-detect format and decode.

detect_codec_format

Detect whether data is PNG, JPEG, or GIF.