[Webkit-unassigned] [Bug 170333] REGRESSION(r213764): [GTK] PNG animations are not played properly

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Mon Apr 3 12:36:43 PDT 2017


--- Comment #3 from Carlos Alberto Lopez Perez <clopez at igalia.com> ---
(In reply to Said Abou-Hallawa from comment #2)
> The animation issue happens because in PNGImageDecoder.h, the implementation
> of repetitionCount() is the following:
> RepetitionCount repetitionCount() const override { return m_playCount-1; }
> Since I changed the definition of RepetitionCount enum values, this function
> should like this:
> RepetitionCount repetitionCount() const override { return m_playCount ?
> m_playCount : RepetitionCountInfinite; }

I tested this, and it is not fixing the problem.
The playback of the image is still weird.

I think this is better explained with a video than with words.

This is what I see (on the WebKitGTK+ MiniBrowser with a build from trunk at r214787) :

video [mp4]  : https://people.igalia.com/clopez/wkbug/170333/elephant_bug.mp4
video [webm] : https://people.igalia.com/clopez/wkbug/170333/elephant_bug.webm

An I see the same after the suggested fix.

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