tree 66b818e3053fa5c69067934e2637a69d52475607
parent c7ac645d28b99f163c46e2b8622ca7b60dc212ce
author Ian Davis <nospam@iandavis.com> 1536422400 +0100
committer Nigel Tao <nigeltao@golang.org> 1537860279 +0000

image/png: pack image data for small bitdepth paletted images

Bit packs image data when writing images with fewer than 16
colors in its palette. Reading of bit packed image data was
already implemented.

Fixes #19879

Change-Id: I0a06f9599a163931e20d3503fc3722e5101f0070
Reviewed-on: https://go-review.googlesource.com/134235
Reviewed-by: Nigel Tao <nigeltao@golang.org>