Attachment 368489 Details for Bug 197383 – Patch

[patch] Patch

bug-197383-20190429140125.patch (text/plain), 3.56 KB, created by youenn fablet on 2019-04-29 14:01:27 PDT

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Creator: youenn fablet

Created: 2019-04-29 14:01:27 PDT

Size: 3.56 KB

patch

obsolete

>Subversion Revision: 244694
>diff --git a/Source/WebCore/ChangeLog b/Source/WebCore/ChangeLog
>index 83a5570adea3d55df64ea767b4b5aa71bb39ed4e..0f6028b5b909837d51c3cead3a84722be8079eec 100644
>--- a/Source/WebCore/ChangeLog
>+++ b/Source/WebCore/ChangeLog
>@@ -1,3 +1,22 @@
>+2019-04-29  Youenn Fablet  <youenn@apple.com>
>+
>+        Refactor AudioContext to register/unregister itself at construction/destruction time
>+        https://bugs.webkit.org/show_bug.cgi?id=197383
>+
>+        Reviewed by NOBODY (OOPS!).
>+
>+        Registering/Unregistering is cheap.
>+        Instead of registering/unregistering in initialize/uninitialize,
>+        move this code to constructor/destructor.
>+        No observable change of behavior.
>+
>+        * Modules/webaudio/AudioContext.cpp:
>+        (WebCore::AudioContext::AudioContext):
>+        (WebCore::AudioContext::~AudioContext):
>+        (WebCore::AudioContext::lazyInitialize):
>+        (WebCore::AudioContext::uninitialize):
>+        (WebCore::AudioContext::visibilityStateChanged):
>+
> 2019-04-29  Youenn Fablet  <youenn@apple.com>
> 
>         Make Document audio producers use WeakPtr
>diff --git a/Source/WebCore/Modules/webaudio/AudioContext.cpp b/Source/WebCore/Modules/webaudio/AudioContext.cpp
>index 2e769e511964f96530ad690f3accf068d6788d97..1eda68911dee46b0f24d035d6ed6c34ec2271223 100644
>--- a/Source/WebCore/Modules/webaudio/AudioContext.cpp
>+++ b/Source/WebCore/Modules/webaudio/AudioContext.cpp
>@@ -147,6 +147,11 @@ AudioContext::AudioContext(Document& document)
> 
>     // Initialize the destination node's muted state to match the page's current muted state.
>     pageMutedStateDidChange();
>+
>+    if (!isOfflineContext()) {
>+        document.addAudioProducer(*this);
>+        document.registerForVisibilityStateChangedCallbacks(*this);
>+    }
> }
> 
> // Constructor for offline (non-realtime) rendering.
>@@ -202,6 +207,11 @@ AudioContext::~AudioContext()
>         m_renderingAutomaticPullNodes.resize(m_automaticPullNodes.size());
>     ASSERT(m_renderingAutomaticPullNodes.isEmpty());
>     // FIXME: Can we assert that m_deferredFinishDerefList is empty?
>+
>+    if (!isOfflineContext() && document()) {
>+        document()->removeAudioProducer(*this);
>+        document()->unregisterForVisibilityStateChangedCallbacks(*this);
>+    }
> }
> 
> void AudioContext::lazyInitialize()
>@@ -218,9 +228,6 @@ void AudioContext::lazyInitialize()
>         m_destinationNode->initialize();
> 
>         if (!isOfflineContext()) {
>-            document()->addAudioProducer(*this);
>-            document()->registerForVisibilityStateChangedCallbacks(*this);
>-
>             // This starts the audio thread. The destination node's provideInput() method will now be called repeatedly to render audio.
>             // Each time provideInput() is called, a portion of the audio stream is rendered. Let's call this time period a "render quantum".
>             // NOTE: for now default AudioContext does not need an explicit startRendering() call from JavaScript.
>@@ -265,9 +272,6 @@ void AudioContext::uninitialize()
>     m_isAudioThreadFinished = true;
> 
>     if (!isOfflineContext()) {
>-        document()->removeAudioProducer(*this);
>-        document()->unregisterForVisibilityStateChangedCallbacks(*this);
>-
>         ASSERT(s_hardwareContextCount);
>         --s_hardwareContextCount;
> 
>@@ -378,7 +382,7 @@ bool AudioContext::isSuspended() const
> void AudioContext::visibilityStateChanged()
> {
>     // Do not suspend if audio is audible.
>-    if (mediaState() == MediaProducer::IsPlayingAudio)
>+    if (mediaState() == MediaProducer::IsPlayingAudio || m_isStopScheduled)
>         return;
> 
>     if (document()->hidden()) {

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Attachments on bug 197383: 368486 | 368489 | 368511