A HEIF image decoder written purely from scratch
Currently, this crate can parse the ISOBMFF container, extract HEVC parameter sets, and decode image metadata. HEVC slice decoding for actual image reconstruction is still in progress
https://en.wikipedia.org/wiki/High_Efficiency_Video_Coding
https://en.wikipedia.org/wiki/Exponential-Golomb_coding
https://www.adobe.com/creativecloud/file-types/image/raster/heic-file.html
https://www.adobe.com/creativecloud/file-types/image/comparison/heic-vs-jpeg.html