| Summary: | Checking if frame is complete and access duration doesn't need a decode | ||
|---|---|---|---|
| Product: | WebKit | Reporter: | Ryosuke Niwa <rniwa> |
| Component: | Images | Assignee: | Nobody <webkit-unassigned> |
| Status: | RESOLVED DUPLICATE | ||
| Severity: | Normal | CC: | barraclough, benjamin, kling, koivisto, mjs, ossy |
| Priority: | P2 | Keywords: | BlinkMergeCandidate |
| Version: | 528+ (Nightly build) | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
|
Description
Ryosuke Niwa
2013-05-08 20:57:00 PDT
Consider merging the above change. hecking if frame is complete and access duration doesn't need a decode The goal of this change is to minimize image decoding on the main thread. This change is to avoid image decoding for these two operations: 1. frameIsCompleteAtIndex 2. frameDurationAtIndex These two operations are moved to ImageDecoder interface and are now const to prevent future regression. We are now able to check if a frame is complete by parsing the entire GIF file without decoding. This also provides information like frame duration such that controller the animation doesn't require any decoding. This change is critical to moving animated image decoding off the main thread. *** This bug has been marked as a duplicate of bug 116041 *** |