[Webkit-unassigned] [Bug 199619] New: [GStreamer] Protect against null samples and samples with null buffers

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=199619

            Bug ID: 199619
           Summary: [GStreamer] Protect against null samples and samples
                    with null buffers
           Product: WebKit
           Version: Other
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Media
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: eocanha at igalia.com

Under some circumstances (eg: after flushCurrentBuffer()), the (GstSample)m_sample stored by MediaPlayerPrivateGStreamerBase can contain a null GstBuffer. The GstVideoFrameHolder code and the MediaPlayerPrivateGStreamerBase::pushTextureToCompositor(), copyVideoTextureToPlatformTexture() and nativeImageForCurrentTime() methods don't properly manage that scenario, triggering crashes.

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