tree ae8e3ed94e9e8e66f9324d2e15f335adb2e7c029
parent 4b0cde4c6d73322a98f395cff494bcdb537b1795
author commit-queue@webkit.org <commit-queue@webkit.org@268f45cc-cd09-0410-ab3c-d52691b4dbfc> 1500054244 +0000
committer commit-queue@webkit.org <commit-queue@webkit.org@268f45cc-cd09-0410-ab3c-d52691b4dbfc> 1500054244 +0000

Report CoreAudioCaptureSource failure in case shared unit stops working properly
https://bugs.webkit.org/show_bug.cgi?id=174494

Patch by Youenn Fablet <youenn@apple.com> on 2017-07-14
Reviewed by Eric Carlson.

Source/WebCore:

Manual test by interrupting an audio capture on Mac.

This patch adds a timer to CoreAudioSharedUnit.
In case the capture callback is not called after one second, the shared unit is said to fail.
Each source is notified that capture is failing.
This will in turn trigger onend track event so that web pages can remedy capture failure.

Timer starts with 10 seconds for audio data to start being captured.
It is then decreased to 2 seconds.

* platform/mediastream/RealtimeMediaSource.cpp:
(WebCore::RealtimeMediaSource::captureFailed):
* platform/mediastream/RealtimeMediaSource.h:
* platform/mediastream/mac/CoreAudioCaptureSource.cpp:
(WebCore::CoreAudioSharedUnit::CoreAudioSharedUnit):
(WebCore::CoreAudioSharedUnit::processMicrophoneSamples):
(WebCore::CoreAudioSharedUnit::startInternal):
(WebCore::CoreAudioSharedUnit::verifyIsCapturing):
(WebCore::CoreAudioSharedUnit::stopInternal):

Source/WebKit:

In case of capture failure, send a CaptureFailure message so that the
correct behavior happens in the Web process.

* UIProcess/Cocoa/UserMediaCaptureManagerProxy.cpp:
* WebProcess/cocoa/UserMediaCaptureManager.cpp:
(WebKit::UserMediaCaptureManager::captureFailed):
* WebProcess/cocoa/UserMediaCaptureManager.h:
* WebProcess/cocoa/UserMediaCaptureManager.messages.in:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@219511 268f45cc-cd09-0410-ab3c-d52691b4dbfc