this PR introduces a better quality of image recoding, consuming max.
900k instead of 500k (average is much less). the PR roughly doubles the
number of pixels sent in an image.
the old 1280px were set 8 years ago,
data and storage has improved since then,
so it is reasonable to double the number if pixels used for sending an
image.
this will be a quality boost for many images,
while not resulting in a doubled size for all of them; many images will
only be a little larger in bytes, see test.
we could always go higher, of course, but it comes at costs of relay
storage and data, so we stay conservative, even in that increase.
the "worse quality" setting is not adapted on purpose, there we really
stay at the end of what is bearable :)
cc @adbenitez
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Co-authored-by: l <link2xt@testrun.org>
Otherwise, e.g. if a message is a large GIF, but its viewtype is set to `Image` by the app, this GIF
will be recoded to JPEG to reduce its size. GIFs and other special viewtypes must be always detected
and sent as is.
Check if a sticker has at least one fully transparent corner and otherwise change the Sticker type
to Image. This would fix both Android and iOS at the same time and prevent similar bug on future
platforms that may get this bug like Ubuntu Touch.
I.e. > 500K for the balanced media quality and 130K for the worse one. This can remove animation and
transparency from PNG/WebP, but then a user always can send an image as a file.
Also don't reduce wide/high images if they aren't huge. Among other benefits, this way most of PNG
screenshots aren't touched.
Also remove Exif from all images, not from JPEGs only.
