X2Go Bug report logs - #707
BPG as bitmap compression engine in NX

Package: libxcomp3; Maintainer for libxcomp3 is X2Go Developers <x2go-dev@lists.x2go.org>; Source for libxcomp3 is src:nx-libs.

Reported by: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>

Date: Thu, 18 Dec 2014 20:40:01 UTC

Severity: wishlist

Tags: wontfix

Done: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>

Bug is archived. No further changes may be made.

Forwarded to https://github.com/ArcticaProject/nx-libs/issues/75

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From: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>
To: submit@bugs.x2go.org
Subject: BPG as bitmap compression engine in NX
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[Message part 1 (text/plain, inline)]
Package: libxcomp3
Severity: wishlist

Hi all,

By Savko Sergey I have just been pointed to the upcoming BPG image  
compression library [1].

Quoting their website:

"""
BPG (Better Portable Graphics) is a new image format. Its purpose is  
to replace the JPEG image format when quality or file size is an  
issue. Its main advantages are:

    High compression ratio. Files are much smaller than JPEG for  
similar quality.
    Supported by most Web browsers with a small Javascript decoder  
(gzipped size: 55 KB).
    Based on a subset of the HEVC open video compression standard.
    Supports the same chroma formats as JPEG (grayscale, YCbCr 4:2:0,  
4:2:2, 4:4:4) to reduce the losses during the conversion. An alpha  
channel is supported. The RGB, YCgCo and CMYK color spaces are also  
supported.
    Native support of 8 to 14 bits per channel for a higher dynamic range.
    Lossless compression is supported.
    Various metadata (such as EXIF, ICC profile, XMP) can be included.
"""

We should take a look at this new compression library and check if it  
is usable in NX.

Mike

[1] http://bellard.org/bpg/

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