[Webkit-unassigned] [Bug 173410] [GTK] fast/canvas/canvas-createPattern-video-loading.html is failing since r218170

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=173410

Ms2ger <Ms2ger at igalia.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |Ms2ger at igalia.com,
                   |                            |zan at falconsigh.net
             Blocks|                            |172427

--- Comment #1 from Ms2ger <Ms2ger at igalia.com> ---
The test fails because drawImageToCanvasAndCheckPixels only find transparent black on the canvas when called from the "playing" callback.

The issue is that MediaPlayerPrivateGStreamerBase::m_sample is set to nullptr in the newly added flushCurrentBuffer() method, called in response to a GST_EVENT_FLUSH_START event. The paint() method then returns early because GST_IS_SAMPLE(m_sample.get()) is false, and the CanvasPattern ends up transparent black.


Referenced Bugs:

https://bugs.webkit.org/show_bug.cgi?id=172427
[Bug 172427] [GStreamerGL] Release GstVideoFrame when there is a flush event from the pipeline
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