Bug 137648

Summary:

Re-enable progressive JPEG image subsampling in WebCore

Product:

WebKit

Reporter:

David Kilzer (:ddkilzer) <ddkilzer>

Component:

New Bugs

Assignee:

David Kilzer (:ddkilzer) <ddkilzer>

Status:

NEW ---

Severity:

Normal

CC:

commit-queue, dbates, ddkilzer, mitz, psolanki, thorton

Priority:

Keywords:

InRadar

Version:

528+ (Nightly build)

Hardware:

Unspecified

OS:

Unspecified

Attachments:

Description	Flags
Patch v1	none

Description David Kilzer (:ddkilzer) 2014-10-12 08:40:01 PDT

Re-enable progressive image subsampling in WebCore

Comment 1 David Kilzer (:ddkilzer) 2014-10-12 08:41:37 PDT

<rdar://problem/5293410>

Comment 2 David Kilzer (:ddkilzer) 2014-10-12 08:46:28 PDT

(In reply to comment #0)
> Re-enable progressive image subsampling in WebCore

This was turned off long ago (before iPhone OS 1.0 shipped) because enabling it caused hangs in WebCore.  The blocking bug was fixed in ImageIO in iOS 8.0, so we're now able to re-enable subsampling of progressive JPEG images.

Comment 3 David Kilzer (:ddkilzer) 2014-10-12 09:24:04 PDT

Created attachment 239705 [details]
Patch v1

Comment 4 David Kilzer (:ddkilzer) 2014-10-16 10:15:30 PDT

Add CQ+ flag.

Comment 5 David Kilzer (:ddkilzer) 2014-10-16 13:54:15 PDT

Comment on attachment 239705 [details]
Patch v1

Needs more investigation due to failing layout test.