Closed Bug 386268 Opened 17 years ago Closed 17 years ago

Animated GIF doesn't loop properly.

Categories

(Core :: Graphics: ImageLib, defect)

x86
All
defect
Not set
major

Tracking

()

VERIFIED FIXED
mozilla1.9alpha8

People

(Reporter: Dolske, Assigned: alfredkayser)

References

()

Details

(Keywords: regression)

Attachments

(1 file, 1 obsolete file)

I noticed today that this little animation only seems to play a few frames before repeating. Looks like a regression from 196295... From IRC: <ispiked> I confirmed it regressed between 2007-06-25-04 and 2007-06-26-04, if you want to add that to the bug.
Flags: blocking1.9?
Hmm, I looked at some other animated gifs created with Adobe ImageReady, and none of them play properly.
Might be fixed by the patch in bug 386269 or the new patch in bug 196295?
Found it, the problem is in handling of broken gif's. The code before: /* Make sure there are still rows left. If the GIF data */ /* is corrupt, we may not get an explicit terminator. */ if (gs->rows_remaining == 0) { /* This is an illegal GIF, but we remain tolerant. */ #ifdef DONT_TOLERATE_BROKEN_GIFS gs->state = gif_error; break; #else GETN(1, gif_sub_block); #endif } was with my patch changed to: /* Make sure there are still rows left. If the GIF data */ /* is corrupt, we may not get an explicit terminator. */ if (gs->rows_remaining == 0) { /* This is an illegal GIF, but we remain tolerant. */ #ifdef DONT_TOLERATE_BROKEN_GIFS gs->state = gif_error; #else GETN(1, gif_sub_block); #endif } break; This resulted in aborting of decoding of 'broken' gif images.
Attachment #270246 - Attachment is obsolete: true
Attachment #270312 - Flags: review?(gavin.sharp)
Comment on attachment 270312 [details] [diff] [review] Patch to fix the broken 'broken gif' handling You'll have to ask a peer for this module for review.
Attachment #270312 - Flags: review?(gavin.sharp)
Comment on attachment 270312 [details] [diff] [review] Patch to fix the broken 'broken gif' handling Christian, can you review this?
Attachment #270312 - Flags: review?(cbiesinger)
May want to ask andrew (asmith, iirc) or stuart for review if biesi doesn't get to it.
Flags: blocking1.9? → blocking1.9+
Attachment #270312 - Flags: review?(cbiesinger) → review?(pavlov)
Attachment #270312 - Flags: review?(pavlov) → review+
Attachment #270312 - Flags: superreview?(tor)
OK -> ALL as this occurs in Windows and Linux as well.
OS: Mac OS X → All
Attachment #270312 - Flags: superreview?(tor) → superreview+
Who can do the checkin for me?
Keywords: checkin-needed
Blocks: slowGIF
Looks like there aren't many people around who can do checkins and look for / care about "checkin-needed" bugs. If it takes too long (e.g. blocks your work in other bugs), you might want to ask directly in #developers.
Target Milestone: --- → mozilla1.9 M8
Assignee: nobody → alfredkayser
Status: NEW → ASSIGNED
Checking in modules/libpr0n/decoders/gif/nsGIFDecoder2.cpp; /cvsroot/mozilla/modules/libpr0n/decoders/gif/nsGIFDecoder2.cpp,v <-- nsGIFDecoder2.cpp new revision: 1.79; previous revision: 1.78 done
Status: ASSIGNED → RESOLVED
Closed: 17 years ago
Keywords: checkin-needed
Resolution: --- → FIXED
Status: RESOLVED → VERIFIED
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