[Webkit-unassigned] [Bug 227865] New: [MSE] SourceBuffer.appendState is only ever WaitingForSegment

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=227865

            Bug ID: 227865
           Summary: [MSE] SourceBuffer.appendState is only ever
                    WaitingForSegment
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Media
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: jean-yves.avenard at apple.com

Per MSE spec, a source buffer has a parsing state attribute that can be of any 3 values: WAITING_FOR_SEGMENT, PARSING_INIT_SEGMENT, PARSING_MEDIA_SEGMENT
https://w3c.github.io/media-source/#sourcebuffer-segment-parser-loop

This internal state is used to safeguard incorrectly calling SourceBuffer.setAppendMode [1] or modifying SourceBuffer.timeStampOffset [2] while we're in the middle of processing a media segment and to throw an exception if we are.
https://w3c.github.io/media-source/#dom-sourcebuffer-mode
https://w3c.github.io/media-source/#dom-sourcebuffer-timestampoffset


However, in the current code, SourceBuffer::m_appendState is only ever set to AppendStateType::WaitingForSegment

The state value should be updated in the Segment Parser Loop that is handled by SourceBufferPrivate but isn't.

-- 
You are receiving this mail because:
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.webkit.org/pipermail/webkit-unassigned/attachments/20210712/9967f752/attachment-0001.htm>