<video> elements do not enter 'paused' state when playing to end over AirPlay
authorjer.noble@apple.com <jer.noble@apple.com@268f45cc-cd09-0410-ab3c-d52691b4dbfc>
Fri, 11 Jan 2019 04:46:23 +0000 (04:46 +0000)
committerjer.noble@apple.com <jer.noble@apple.com@268f45cc-cd09-0410-ab3c-d52691b4dbfc>
Fri, 11 Jan 2019 04:46:23 +0000 (04:46 +0000)
commit3b4b8e21d26eb8147164ee4f7988cd4a0a4ef83c
tree2fb6f8f3c9b014754f05b35a72d3db3cb10fba75
parenteb6b2316ecd071c5e368485582bea2d846c444c6
<video> elements do not enter 'paused' state when playing to end over AirPlay
https://bugs.webkit.org/show_bug.cgi?id=193295
<rdar://problem/46708670>

Reviewed by Eric Carlson.

Adopt the -[AVPlayer timeControlStatus] API, which reports whether the AVPlayer is paused, playing, or blocked waiting
for more data before playing. AirPlay devices report this state back from the remote device, and this allows the
MediaPlayerPrivateAVFoundationObjC to differentiate between user-generated pauses and simple stalling.

Adopting this API allows us to remove the heuristic from rateChanged() which inteprets a rate change when the
readyState > HAVE_ENOUGH as an intentional pause.

Drive-by fix: MediaPlayerPrivateAVFoundation had some code to delay calling platformPlay()
until the first frame became available. But this code was entirely undermined by the previous
behavior of setRate(). Fixing setRate()/setRateDouble() to only start playback if playback was
actually requested started making this code work for the first time, and broke some API tests.
Thus, we're removing this previously dead code.

* platform/graphics/avfoundation/MediaPlayerPrivateAVFoundation.cpp:
(WebCore::MediaPlayerPrivateAVFoundation::MediaPlayerPrivateAVFoundation):
(WebCore::MediaPlayerPrivateAVFoundation::play):
(WebCore::MediaPlayerPrivateAVFoundation::pause):
(WebCore::MediaPlayerPrivateAVFoundation::rateChanged):
(WebCore::MediaPlayerPrivateAVFoundation::updateStates):
* platform/graphics/avfoundation/MediaPlayerPrivateAVFoundation.h:
* platform/graphics/avfoundation/objc/MediaPlayerPrivateAVFoundationObjC.h:
* platform/graphics/avfoundation/objc/MediaPlayerPrivateAVFoundationObjC.mm:
(WebCore::MediaPlayerPrivateAVFoundationObjC::cancelLoad):
(WebCore::MediaPlayerPrivateAVFoundationObjC::createAVPlayer):
(WebCore::MediaPlayerPrivateAVFoundationObjC::didEnd):
(WebCore::MediaPlayerPrivateAVFoundationObjC::platformPlay):
(WebCore::MediaPlayerPrivateAVFoundationObjC::platformPause):
(WebCore::MediaPlayerPrivateAVFoundationObjC::seekToTime):
(WebCore::MediaPlayerPrivateAVFoundationObjC::setRateDouble):
(WebCore::MediaPlayerPrivateAVFoundationObjC::setPlayerRate):
(WebCore::MediaPlayerPrivateAVFoundationObjC::timeControlStatusDidChange):
(WebCore::MediaPlayerPrivateAVFoundationObjC::setShouldObserveTimeControlStatus):
(-[WebCoreAVFMovieObserver observeValueForKeyPath:ofObject:change:context:]):

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@239857 268f45cc-cd09-0410-ab3c-d52691b4dbfc
Source/WebCore/ChangeLog
Source/WebCore/platform/graphics/avfoundation/MediaPlayerPrivateAVFoundation.cpp
Source/WebCore/platform/graphics/avfoundation/MediaPlayerPrivateAVFoundation.h
Source/WebCore/platform/graphics/avfoundation/objc/MediaPlayerPrivateAVFoundationObjC.h
Source/WebCore/platform/graphics/avfoundation/objc/MediaPlayerPrivateAVFoundationObjC.mm