Bug 171497 – Ensure RealtimeOutgoingVideoSource sends a black frame when its related source is muted

• Component: Media
• Status: RESOLVED FIXED

[youenn fablet]

As per the spec, a black frame should be sent when a track is muted.
We are currently doing so at track consumer level.

[youenn fablet]

Created attachment 308729 [details]
Patch

[Build Bot]

Comment on attachment 308729 [details]
Patch

Attachment 308729 [details] did not pass mac-wk2-ews (mac-wk2):
Output: http://webkit-queues.webkit.org/results/3652157

New failing tests:
webrtc/video-mute.html

[Build Bot]

Created attachment 308735 [details]
Archive of layout-test-results from ews106 for mac-elcapitan-wk2

The attached test failures were seen while running run-webkit-tests on the mac-wk2-ews.
Bot: ews106  Port: mac-elcapitan-wk2  Platform: Mac OS X 10.11.6

[Build Bot]

Comment on attachment 308729 [details]
Patch

Attachment 308729 [details] did not pass ios-sim-ews (ios-simulator-wk2):
Output: http://webkit-queues.webkit.org/results/3652191

New failing tests:
webrtc/video-mute.html

[Build Bot]

Created attachment 308740 [details]
Archive of layout-test-results from ews123 for ios-simulator-wk2

The attached test failures were seen while running run-webkit-tests on the ios-sim-ews.
Bot: ews123  Port: ios-simulator-wk2  Platform: Mac OS X 10.11.6

[Eric Carlson]

Comment on attachment 308729 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=308729&action=review

> Source/WebCore/ChangeLog:11
> +        VideoToolBox sometimes do not output a frame until receveing the other.

Nit: "sometimes do not" -> "sometimes does not"

"until receveing the other -> "until it receives another"

> Source/WebCore/platform/mediastream/mac/RealtimeOutgoingVideoSource.cpp:84
> +        sendBlackFrame();
> +        // FIXME: We should not need to send two black frames but VTB requires that so we are sure a black frame is sent over the wire.
> +        m_blackFrameTimer.startOneShot(0_s);

Nit: this could be put into a helper function since it is repeated in sourceEnabledChanged.

> Source/WebCore/platform/mediastream/mac/RealtimeOutgoingVideoSource.h:95
> +    uint32_t m_width { 0 };
> +    uint32_t m_height { 0 };

Nit: can you use an IntSize here?

[youenn fablet]

Thanks for the review.

(In reply to Eric Carlson from comment #6)
> Comment on attachment 308729 [details]
> Patch
> 
> View in context:
> https://bugs.webkit.org/attachment.cgi?id=308729&action=review
> 
> > Source/WebCore/ChangeLog:11
> > +        VideoToolBox sometimes do not output a frame until receveing the other.
> 
> Nit: "sometimes do not" -> "sometimes does not"
> 
> "until receveing the other -> "until it receives another"

OK

> > Source/WebCore/platform/mediastream/mac/RealtimeOutgoingVideoSource.cpp:84
> > +        sendBlackFrame();
> > +        // FIXME: We should not need to send two black frames but VTB requires that so we are sure a black frame is sent over the wire.
> > +        m_blackFrameTimer.startOneShot(0_s);
> 
> Nit: this could be put into a helper function since it is repeated in
> sourceEnabledChanged.

OK

> > Source/WebCore/platform/mediastream/mac/RealtimeOutgoingVideoSource.h:95
> > +    uint32_t m_width { 0 };
> > +    uint32_t m_height { 0 };
> 
> Nit: can you use an IntSize here?

IntSize is int-based while settings is uint32_t based, which seems better for values that can only be positive.

[youenn fablet]

Created attachment 308782 [details]
Patch for landing

[Build Bot]

Comment on attachment 308782 [details]
Patch for landing

Attachment 308782 [details] did not pass ios-sim-ews (ios-simulator-wk2):
Output: http://webkit-queues.webkit.org/results/3654423

New failing tests:
webrtc/video-mute.html

[Build Bot]

Created attachment 308792 [details]
Archive of layout-test-results from ews125 for ios-simulator-wk2

The attached test failures were seen while running run-webkit-tests on the ios-sim-ews.
Bot: ews125  Port: ios-simulator-wk2  Platform: Mac OS X 10.11.6

[youenn fablet]

Created attachment 308794 [details]
Patch for landing

[WebKit Commit Bot]

Comment on attachment 308794 [details]
Patch for landing

Clearing flags on attachment: 308794

Committed r216054: <http://trac.webkit.org/changeset/216054>

[WebKit Commit Bot]

All reviewed patches have been landed.  Closing bug.

[Jon Lee]

rdar://problem/29265874