From: Anthony Liguori <anthony@codemonkey.ws>
To: qemu-devel@nongnu.org
Cc: Alexander Graf <agraf@suse.de>
Subject: Re: [Qemu-devel] [5076] VNC: Support for ExtendedKeyEvent client message
Date: Thu, 28 Aug 2008 16:47:11 -0500 [thread overview]
Message-ID: <48B71CDF.6030806@codemonkey.ws> (raw)
In-Reply-To: <28A4FF84-9A3A-4A60-A67B-3533530A728D@df.lth.se>
Christian Brunschen wrote:
>
>>
>> I doubt you'll see a benefit from this. PNG compression is paletted
>> and compressed (just like GIF).
>
> PNG does more than that. PNG supports full colour (up to 16 bits per
> colour component) including a full alpha channel, and has various
> filters that are applied to the image data to improve compression. Not
> to mention PNG is much more than GIF.
Tight also has various filters to improve the compression. The VNC
protocol won't support 16-bit color components or an alpha channel so
this isn't an advantage.
> As an aside - is the Tight protocol documented somewhere? In actual
> documentation rather than source code, I mean?
Just the source code. Although there's a big comment block that
describes it as well as the rest of the VNC protocol docs do.
Regards,
Anthony Liguori
prev parent reply other threads:[~2008-08-28 21:48 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-08-23 23:27 [Qemu-devel] [5076] VNC: Support for ExtendedKeyEvent client message Anthony Liguori
2008-08-27 10:02 ` Alexander Graf
2008-08-27 10:31 ` Daniel P. Berrange
2008-08-28 20:32 ` Anthony Liguori
2008-08-28 20:44 ` Christian Brunschen
2008-08-28 21:47 ` Anthony Liguori [this message]
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