A MediaTime timescale must never be zero

[Eric Carlson]

The MediaTime's timescale is frequently used as a divisor, so don't allow it to be zero.

[Eric Carlson]

Created attachment 358385 [details]
Patch

[Eric Carlson]

<rdar://problem/32504501>

[Eric Carlson]

Created attachment 358398 [details]
Patch

[EWS Watchlist]

Comment on attachment 358398 [details]
Patch

Attachment 358398 [details] did not pass mac-wk2-ews (mac-wk2):
Output: https://webkit-queues.webkit.org/results/10635031

New failing tests:
imported/w3c/web-platform-tests/webaudio/the-audio-api/the-mediaelementaudiosourcenode-interface/mediaElementAudioSourceToScriptProcessorTest.html
webaudio/silence-after-playback.html

[EWS Watchlist]

Created attachment 358406 [details]
Archive of layout-test-results from ews104 for mac-sierra-wk2

The attached test failures were seen while running run-webkit-tests on the mac-wk2-ews.
Bot: ews104  Port: mac-sierra-wk2  Platform: Mac OS X 10.12.6

[EWS Watchlist]

Comment on attachment 358398 [details]
Patch

Attachment 358398 [details] did not pass mac-ews (mac):
Output: https://webkit-queues.webkit.org/results/10635317

New failing tests:
imported/w3c/web-platform-tests/webaudio/the-audio-api/the-mediaelementaudiosourcenode-interface/mediaElementAudioSourceToScriptProcessorTest.html
webaudio/silence-after-playback.html

[EWS Watchlist]

Created attachment 358407 [details]
Archive of layout-test-results from ews102 for mac-sierra

The attached test failures were seen while running run-webkit-tests on the mac-ews.
Bot: ews102  Port: mac-sierra  Platform: Mac OS X 10.12.6

[EWS Watchlist]

Comment on attachment 358398 [details]
Patch

Attachment 358398 [details] did not pass ios-sim-ews (ios-simulator-wk2):
Output: https://webkit-queues.webkit.org/results/10635436

New failing tests:
imported/w3c/web-platform-tests/webaudio/the-audio-api/the-mediaelementaudiosourcenode-interface/mediaElementAudioSourceToScriptProcessorTest.html

[EWS Watchlist]

Created attachment 358417 [details]
Archive of layout-test-results from ews121 for ios-simulator-wk2

The attached test failures were seen while running run-webkit-tests on the ios-sim-ews.
Bot: ews121  Port: ios-simulator-wk2  Platform: Mac OS X 10.13.6

[EWS Watchlist]

Comment on attachment 358398 [details]
Patch

Attachment 358398 [details] did not pass mac-debug-ews (mac):
Output: https://webkit-queues.webkit.org/results/10635518

New failing tests:
http/wpt/css/css-animations/start-animation-001.html
webaudio/silence-after-playback.html

[EWS Watchlist]

Created attachment 358420 [details]
Archive of layout-test-results from ews114 for mac-sierra

The attached test failures were seen while running run-webkit-tests on the mac-debug-ews.
Bot: ews114  Port: mac-sierra  Platform: Mac OS X 10.12.6

[Eric Carlson]

Created attachment 358442 [details]
Patch

[Jer Noble]

Comment on attachment 358442 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=358442&action=review

r=me with nit:

> Source/WTF/wtf/MediaTime.cpp:90
> +    if (value < 0)
> +        *this = negativeInfiniteTime();
> +    else
> +        *this = positiveInfiniteTime();

Nit: in other places you use a ternary operator for this kind of thing.

[Eric Carlson]

Created attachment 358510 [details]
Patch for landing

[WebKit Commit Bot]

Comment on attachment 358510 [details]
Patch for landing

Clearing flags on attachment: 358510

Committed r239688: <https://trac.webkit.org/changeset/239688>

[WebKit Commit Bot]

All reviewed patches have been landed.  Closing bug.