Re: Compressed SVG? (and a couple of announcements)

On Tue, Oct 14, 2014 at 8:07 AM, Sairus Patel <sppatel@adobe.com> wrote:

>  Behdad,
>
>  This is great. I’m glad everyone’s in agreement.
>
>  I’d suggest you bring up this proposal on the OFF list (and, if you
> like, the OT list), even though they may not be ready to formally move
> forward with it immediately. This way, the OFF/OT folks will be informed
> early on on how this part of the spec is evolving.
>

Just did that.  Lets see how that goes.


> And since bumping the (“minor”) version of the SVG table won’t buy us
> anything, we should leave the version as it is.
>

Agreed.  As long as the Firefox implementation is happy, we can all work
around the version number.

b


> Thanks!
>
>  Sairus
>
>
>   From: <Levantovsky>, Vladimir Levantovsky <
> Vladimir.Levantovsky@monotype.com>
> Date: Tuesday, October 14, 2014 at 7:30 AM
> To: Behdad Esfahbod <behdad@google.com>, Leonard Rosenthol <
> lrosenth@adobe.com>
> Cc: Robert O'Callahan <robert@ocallahan.org>, Sairus Patel <
> sppatel@adobe.com>, "public-svgopentype@w3.org" <public-svgopentype@w3.org
> >
> Subject: RE: Compressed SVG? (and a couple of announcements)
>
>   As far as the formalities are concerned, we are very late in the ISO
> process to be able to accommodate the changes like this in the current
> version of the standard. The 3rd edition OFF document is under final DIS
> ballot (so the substantial changes can’t be introduced at this time), and
> to make this change we will need to open a new amendment.
>
>
>
> As far as timing is concerned, the next MPEG meeting will happen the very
> next week, so again we are late to introduce a proposal for an amendment,
> so this can be done at the meeting after next, in Feb 2015.
>
>
>
> Thank you,
>
> Vlad
>
>
>
>
>
> *From:* Behdad Esfahbod [mailto:behdad@google.com <behdad@google.com>]
> *Sent:* Tuesday, October 14, 2014 1:29 AM
> *To:* Leonard Rosenthol
> *Cc:* Robert O'Callahan; Sairus Patel; public-svgopentype@w3.org
> *Subject:* Re: Compressed SVG? (and a couple of announcements)
>
>
>
> Ok, great: we have an agreement.
>
>
>
> Sairus, Robert, please advise how to proceed.
>
>
>
> Thanks,
>
> behdad
>
>
>
> On Sun, Oct 12, 2014 at 6:29 AM, Leonard Rosenthol <lrosenth@adobe.com>
> wrote:
>
> If you are using gzip and not simple flate – then yes.  But you need to
> make that VERY clear since most folks will assume that you are not doing
> that…
>
>
>
> Leonard
>
>
>
> *From: *Behdad Esfahbod <behdad@google.com>
> *Date: *Friday, October 10, 2014 at 2:30 AM
> *To: *Robert O'Callahan <robert@ocallahan.org>
> *Cc: *Sairus Patel <sppatel@adobe.com>, "public-svgopentype@w3.org" <
> public-svgopentype@w3.org>
> *Subject: *Re: Compressed SVG? (and a couple of announcements)
> *Resent-From: *"public-svgopentype@w3.org" <public-svgopentype@w3.org>
> *Resent-Date: *Friday, October 10, 2014 at 2:31 AM
>
>
>
> On Wed, Oct 8, 2014 at 1:02 PM, Robert O'Callahan <robert@ocallahan.org>
> wrote:
>
> On Tue, Oct 7, 2014 at 11:10 PM, Behdad Esfahbod <behdad@google.com>
> wrote:
>
>   On Tue, Oct 7, 2014 at 10:37 PM, Robert O'Callahan <robert@ocallahan.org>
> wrote:
>
> On Tue, Oct 7, 2014 at 1:36 AM, Behdad Esfahbod <behdad@google.com> wrote:
>
>   Robert, Jonathan, are you willing to support this in Firefox?
>
>
>   I'm not sure what exactly your proposal is. As I understand it, you're
> proposing to allow each SVG document to be optionally, independently
> compressed via zlib.
>
>
>
> I was thinking gzip instead of zlib, since gzip-compressed svg is in
> common use as sgvz.
>
>
>
>  How does the UA distinguish compressed documents from not-compressed
> documents?
>
>
>
> If the data stream starts with 0x1f 0x8b (gzip signature), then process as
> svgz, otherwise process as svg.
>
>
>
> That sounds reasonable.
>
> The gzip header contains the uncompressed data size.
>
>
>
> Great point.  Thanks Rob.  The *last* four bytes of the gzip-compressed
> data is the uncompressed size.
>
>
>
>
>
>   Doesn't that mean concerns about knowing the uncompressed size are
> already addressed?
>
>
>
> I hope so.  Sairus, Leonard, does that address your concerns?
>
>
>
>  Rob
>
>
>