Log Message:
libheif: update to 1.19.1.

1.19.1

Fixes backwards compatibility of heif_context_set_maximum_image_size_limit() (#1359).

v1.19.0 - tile access for high-resolution images

The major new feature in this release is the decoding of separate image tiles \ 
and also encoding an image tile by tile. This allows to process high-resolution \ 
images that do not fit into memory.
We support three tiling methods:

    grid, which is the default tiling method used in most existing HEIC or AVIF \ 
images.
    unci, which is the built-in tiling method of the ISO 23001-17 uncompressed codec.
    tili, which is a proprietary scheme with much less overhead than grid and \ 
which supports efficient streaming of high-resolution images over networks \ 
without having to download huge amounts of metadata before the first tile can be \ 
decoded. It also supports much larger images than possible with grid. As an \ 
extra, it supports the processing of multi-dimensional images, like 3D image \ 
cubes, or image sets addressed by several parameter dimensions, for example \ 
multi-spectral images. See the specification of this format.

Developers will find more information in the tiling API documentation. Also \ 
check out the example viewer for tiled images and the example images on this \ 
page.
The heif-enc command line tool can now also encode tiled and multi-resolution \ 
pyramids. See the description.

Other changes:

    decoding is faster, especially if you let libheif decide on the best \ 
colorspace to work in by passing heif_colorspace_unknown and heif_chroma_unknown \ 
to heif_decode_image(). It will then use the input colorspace and avoid \ 
unnecessary conversions.
    support for multi-resolution pyramids (pymd) to show downscaled versions of \ 
high-resolution images
    improved reader interface that enables to connect libheif to a network \ 
source. Libheif will request the portions of the image file that have to be \ 
downloaded from the server. This is especially useful in connection with the \ 
tiling / multi-resolution pyramid feature.
    function to generate overlay images
    decoding progress is signaled to the client application and decoding can be \ 
cancelled
    decoding of AVC encoded images through OpenH264
    security limits can be changed to be able to read very large images

This is a big release with the help of many people reporting issues or providing \ 
contributions. Thank you to all of them!