Attachment 346863 Details for Bug 188452 – Patch

[patch] Patch

bug-188452-20180809144804.patch (text/plain), 23.17 KB, created by Jer Noble on 2018-08-09 14:48:05 PDT

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Creator: Jer Noble

Created: 2018-08-09 14:48:05 PDT

Size: 23.17 KB

patch

obsolete

>Subversion Revision: 234695
>diff --git a/Source/WebCore/ChangeLog b/Source/WebCore/ChangeLog
>index 61c2db15b8b8ca5d9c8b2d3f66b75b3b98f1b39c..4d4b1296d5c1da45c25dfc0dfede7510f07e76cd 100644
>--- a/Source/WebCore/ChangeLog
>+++ b/Source/WebCore/ChangeLog
>@@ -1,3 +1,32 @@
>+2018-08-09  Jer Noble  <jer.noble@apple.com>
>+
>+        Video playback is using more power
>+        https://bugs.webkit.org/show_bug.cgi?id=188452
>+        <rdar://problem/42298937>
>+
>+        Reviewed by NOBODY (OOPS!).
>+
>+        Test: TestWebKitAPI/Tests/WebKitCocoa/PreferredAudioBufferSize.mm
>+
>+        When the meaning of PlatformMediaSession::Video changed to "video-only", we failed to update
>+        MediaSessionManagerCocoa::updateSessionState() to use the new PlatformMediaSession::VideoAudio
>+        enum, so Video-only sessions were getting the higher audio buffer size (where it's not needed)
>+        and Video-and-Audio sessions were getting the default value.
>+
>+        To enable testing, add a preferredAudioBufferSize property to Internals. Also, the getter for
>+        AudioSession::preferredBufferSize was using the wrong CoreAudio property address, and was
>+        always returning 0.
>+
>+        * platform/audio/AudioSession.h:
>+        * platform/audio/cocoa/MediaSessionManagerCocoa.cpp:
>+        (MediaSessionManagerCocoa::updateSessionState):
>+        * platform/audio/mac/AudioSessionMac.cpp:
>+        (WebCore::AudioSession::preferredBufferSize const):
>+        * testing/Internals.cpp:
>+        (WebCore::Internals::preferredAudioBufferSize const):
>+        * testing/Internals.h:
>+        * testing/Internals.idl:
>+
> 2018-08-08  Sihui Liu  <sihui_liu@apple.com>
> 
>         Assertion failed in Webcore::Process::setIdentifier()
>diff --git a/Source/WebCore/platform/audio/AudioSession.h b/Source/WebCore/platform/audio/AudioSession.h
>index 2df2050976ee3f656542654a2f63d2d8bf902a93..f2f4f953f2d09111b833b357365d935505f26c17 100644
>--- a/Source/WebCore/platform/audio/AudioSession.h
>+++ b/Source/WebCore/platform/audio/AudioSession.h
>@@ -73,7 +73,7 @@ public:
> 
>     bool tryToSetActive(bool);
> 
>-    size_t preferredBufferSize() const;
>+    WEBCORE_EXPORT size_t preferredBufferSize() const;
>     void setPreferredBufferSize(size_t);
> 
>     class MutedStateObserver {
>diff --git a/Source/WebCore/platform/audio/cocoa/MediaSessionManagerCocoa.cpp b/Source/WebCore/platform/audio/cocoa/MediaSessionManagerCocoa.cpp
>index 5da5127cb6391e3fa0fb6cae035db7162281bdda..03a96bdeaa09549261a41f6fe0359c8cc0f3ec78 100644
>--- a/Source/WebCore/platform/audio/cocoa/MediaSessionManagerCocoa.cpp
>+++ b/Source/WebCore/platform/audio/cocoa/MediaSessionManagerCocoa.cpp
>@@ -48,7 +48,7 @@ void MediaSessionManagerCocoa::updateSessionState()
>     // while having a large enough buffer so that the audio rendering remains stable, hence a computation based on sample rate.
>     else if (has(PlatformMediaSession::MediaStreamCapturingAudio))
>         AudioSession::sharedSession().setPreferredBufferSize(AudioSession::sharedSession().sampleRate() / 50);
>-    else if ((has(PlatformMediaSession::Video) || has(PlatformMediaSession::Audio)) && DeprecatedGlobalSettings::lowPowerVideoAudioBufferSizeEnabled()) {
>+    else if ((has(PlatformMediaSession::VideoAudio) || has(PlatformMediaSession::Audio)) && DeprecatedGlobalSettings::lowPowerVideoAudioBufferSizeEnabled()) {
>         // FIXME: <http://webkit.org/b/116725> Figure out why enabling the code below
>         // causes media LayoutTests to fail on 10.8.
> 
>diff --git a/Source/WebCore/platform/audio/mac/AudioSessionMac.cpp b/Source/WebCore/platform/audio/mac/AudioSessionMac.cpp
>index 6b595ef0912b8afad63c269dca1cae7a5233d4a9..79ab9f41be5ce6de84c88e3a691810d0f49a4391 100644
>--- a/Source/WebCore/platform/audio/mac/AudioSessionMac.cpp
>+++ b/Source/WebCore/platform/audio/mac/AudioSessionMac.cpp
>@@ -147,7 +147,7 @@ size_t AudioSession::preferredBufferSize() const
>     UInt32 bufferSizeSize = sizeof(bufferSize);
> 
>     AudioObjectPropertyAddress preferredBufferSizeAddress = {
>-        kAudioDevicePropertyBufferFrameSizeRange,
>+        kAudioDevicePropertyBufferFrameSize,
>         kAudioObjectPropertyScopeGlobal,
>         kAudioObjectPropertyElementMaster };
>     OSStatus result = AudioObjectGetPropertyData(defaultDevice(), &preferredBufferSizeAddress, 0, 0, &bufferSizeSize, &bufferSize);
>diff --git a/Source/WebCore/testing/Internals.cpp b/Source/WebCore/testing/Internals.cpp
>index 0b348e80199a68ab89d307c0fe9e462dfd9433b9..13b7b707e2738e33f810ce49ccd5a1af0bd72745 100644
>--- a/Source/WebCore/testing/Internals.cpp
>+++ b/Source/WebCore/testing/Internals.cpp
>@@ -4462,6 +4462,14 @@ String Internals::audioSessionCategory() const
>     return emptyString();
> }
> 
>+double Internals::preferredAudioBufferSize() const
>+{
>+#if USE(AUDIO_SESSION)
>+    return AudioSession::sharedSession().preferredBufferSize();
>+#endif
>+    return 0;
>+}
>+
> void Internals::clearCacheStorageMemoryRepresentation(DOMPromiseDeferred<void>&& promise)
> {
>     auto* document = contextDocument();
>diff --git a/Source/WebCore/testing/Internals.h b/Source/WebCore/testing/Internals.h
>index 3884efde17cdbd26af07f96f58a134145db5d004..7e32be804939496b34905ea5da4ef2eab76d7a9b 100644
>--- a/Source/WebCore/testing/Internals.h
>+++ b/Source/WebCore/testing/Internals.h
>@@ -662,6 +662,7 @@ public:
> #endif
> 
>     String audioSessionCategory() const;
>+    double preferredAudioBufferSize() const;
> 
>     void clearCacheStorageMemoryRepresentation(DOMPromiseDeferred<void>&&);
>     void cacheStorageEngineRepresentation(DOMPromiseDeferred<IDLDOMString>&&);
>diff --git a/Source/WebCore/testing/Internals.idl b/Source/WebCore/testing/Internals.idl
>index 750c6f9519dafbf9177bd567f2133bef6ee28842..01148b98d9b0f8bfb454a7d7411a6f6f64c8820f 100644
>--- a/Source/WebCore/testing/Internals.idl
>+++ b/Source/WebCore/testing/Internals.idl
>@@ -630,6 +630,7 @@ enum CompositingPolicy {
>     void setConsoleMessageListener(StringCallback callback);
> 
>     DOMString audioSessionCategory();
>+    double preferredAudioBufferSize();
> 
>     [Conditional=SERVICE_WORKER] Promise<boolean> hasServiceWorkerRegistration(DOMString scopeURL);
>     [Conditional=SERVICE_WORKER] void terminateServiceWorker(ServiceWorker worker);
>diff --git a/Tools/ChangeLog b/Tools/ChangeLog
>index 5beae2a31bd37f2cfddf518eb8684bae1b306128..82e02d9749ef65e3dd1232d3a2c665bbcb33d8ed 100644
>--- a/Tools/ChangeLog
>+++ b/Tools/ChangeLog
>@@ -1,3 +1,16 @@
>+2018-08-09  Jer Noble  <jer.noble@apple.com>
>+
>+        Video playback is using more power
>+        https://bugs.webkit.org/show_bug.cgi?id=188452
>+        <rdar://problem/42298937>
>+
>+        Reviewed by NOBODY (OOPS!).
>+
>+        * TestWebKitAPI/Tests/WebKitCocoa/PreferredAudioBufferSize.mm:
>+        (PreferredAudioBufferSize::createView):
>+        (PreferredAudioBufferSize::preferredAudioBufferSize const):
>+        (TEST_F):
>+
> 2018-08-08  Wenson Hsieh  <wenson_hsieh@apple.com>
> 
>         [iOS] fast/events/ios/contenteditable-autocapitalize.html is a flaky failure
>diff --git a/Tools/TestWebKitAPI/TestWebKitAPI.xcodeproj/project.pbxproj b/Tools/TestWebKitAPI/TestWebKitAPI.xcodeproj/project.pbxproj
>index 3e036c33fd46179f40039012bd08d45fcf609b13..0fbd35f4523f48255fc20fa3cb53fe4bec12b0c8 100644
>--- a/Tools/TestWebKitAPI/TestWebKitAPI.xcodeproj/project.pbxproj
>+++ b/Tools/TestWebKitAPI/TestWebKitAPI.xcodeproj/project.pbxproj
>@@ -720,7 +720,11 @@
> 		CA38459620AE17A900990D3B /* LocalStorageDatabaseTracker.mm in Sources */ = {isa = PBXBuildFile; fileRef = CA38459520AE012E00990D3B /* LocalStorageDatabaseTracker.mm */; };
> 		CD0BD0A61F79924D001AB2CF /* ContextMenuImgWithVideo.mm in Sources */ = {isa = PBXBuildFile; fileRef = CD0BD0A51F799220001AB2CF /* ContextMenuImgWithVideo.mm */; };
> 		CD0BD0A81F79982D001AB2CF /* ContextMenuImgWithVideo.html in Copy Resources */ = {isa = PBXBuildFile; fileRef = CD0BD0A71F7997C2001AB2CF /* ContextMenuImgWithVideo.html */; };
>+		CD227E44211A4D5D00D285AF /* PreferredAudioBufferSize.mm in Sources */ = {isa = PBXBuildFile; fileRef = CD227E43211A4D5D00D285AF /* PreferredAudioBufferSize.mm */; };
> 		CD321B041E3A85FA00EB21C8 /* video-with-muted-audio-and-webaudio.html in Copy Resources */ = {isa = PBXBuildFile; fileRef = CD321B031E3A84B700EB21C8 /* video-with-muted-audio-and-webaudio.html */; };
>+		CD577799211CE0E4001B371E /* web-audio-only.html in Copy Resources */ = {isa = PBXBuildFile; fileRef = CD577798211CDE8F001B371E /* web-audio-only.html */; };
>+		CD57779C211CE91F001B371E /* audio-with-web-audio.html in Copy Resources */ = {isa = PBXBuildFile; fileRef = CD57779A211CE6B7001B371E /* audio-with-web-audio.html */; };
>+		CD57779D211CE91F001B371E /* video-with-audio-and-web-audio.html in Copy Resources */ = {isa = PBXBuildFile; fileRef = CD57779B211CE6CE001B371E /* video-with-audio-and-web-audio.html */; };
> 		CD59F53419E9110D00CF1835 /* file-with-mse.html in Copy Resources */ = {isa = PBXBuildFile; fileRef = CD59F53219E910AA00CF1835 /* file-with-mse.html */; };
> 		CD59F53519E9110D00CF1835 /* test-mse.mp4 in Copy Resources */ = {isa = PBXBuildFile; fileRef = CD59F53319E910BC00CF1835 /* test-mse.mp4 */; };
> 		CD758A6F20572EA00071834A /* video-with-paused-audio-and-playing-muted.html in Copy Resources */ = {isa = PBXBuildFile; fileRef = CD758A6E20572D540071834A /* video-with-paused-audio-and-playing-muted.html */; };
>@@ -916,6 +920,9 @@
> 			dstPath = TestWebKitAPI.resources;
> 			dstSubfolderSpec = 7;
> 			files = (
>+				CD57779C211CE91F001B371E /* audio-with-web-audio.html in Copy Resources */,
>+				CD57779D211CE91F001B371E /* video-with-audio-and-web-audio.html in Copy Resources */,
>+				CD577799211CE0E4001B371E /* web-audio-only.html in Copy Resources */,
> 				1A9E52C913E65EF4006917F5 /* 18-characters.html in Copy Resources */,
> 				379028B914FAC24C007E6B43 /* acceptsFirstMouse.html in Copy Resources */,
> 				1C2B81871C8925A000A5529F /* Ahem.ttf in Copy Resources */,
>@@ -1916,11 +1923,15 @@
> 		CD0BD0A51F799220001AB2CF /* ContextMenuImgWithVideo.mm */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.cpp.objcpp; path = ContextMenuImgWithVideo.mm; sourceTree = "<group>"; };
> 		CD0BD0A71F7997C2001AB2CF /* ContextMenuImgWithVideo.html */ = {isa = PBXFileReference; lastKnownFileType = text.html; path = ContextMenuImgWithVideo.html; sourceTree = "<group>"; };
> 		CD225C071C45A69200140761 /* ParsedContentRange.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = ParsedContentRange.cpp; sourceTree = "<group>"; };
>+		CD227E43211A4D5D00D285AF /* PreferredAudioBufferSize.mm */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.cpp.objcpp; path = PreferredAudioBufferSize.mm; sourceTree = "<group>"; };
> 		CD321B031E3A84B700EB21C8 /* video-with-muted-audio-and-webaudio.html */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.html; path = "video-with-muted-audio-and-webaudio.html"; sourceTree = "<group>"; };
> 		CD5393C71757BA9700C07123 /* MD5.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = MD5.cpp; sourceTree = "<group>"; };
> 		CD5393C91757BAC400C07123 /* SHA1.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = SHA1.cpp; sourceTree = "<group>"; };
> 		CD5451E919E41F9D0016936F /* CSSParser.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = CSSParser.cpp; sourceTree = "<group>"; };
> 		CD5497B315857F0C00B5BC30 /* MediaTime.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = MediaTime.cpp; sourceTree = "<group>"; };
>+		CD577798211CDE8F001B371E /* web-audio-only.html */ = {isa = PBXFileReference; lastKnownFileType = text.html; path = "web-audio-only.html"; sourceTree = "<group>"; };
>+		CD57779A211CE6B7001B371E /* audio-with-web-audio.html */ = {isa = PBXFileReference; lastKnownFileType = text.html; path = "audio-with-web-audio.html"; sourceTree = "<group>"; };
>+		CD57779B211CE6CE001B371E /* video-with-audio-and-web-audio.html */ = {isa = PBXFileReference; lastKnownFileType = text.html; path = "video-with-audio-and-web-audio.html"; sourceTree = "<group>"; };
> 		CD59F53219E910AA00CF1835 /* file-with-mse.html */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.html; path = "file-with-mse.html"; sourceTree = "<group>"; };
> 		CD59F53319E910BC00CF1835 /* test-mse.mp4 */ = {isa = PBXFileReference; lastKnownFileType = file; path = "test-mse.mp4"; sourceTree = "<group>"; };
> 		CD758A6E20572D540071834A /* video-with-paused-audio-and-playing-muted.html */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.html; path = "video-with-paused-audio-and-playing-muted.html"; sourceTree = "<group>"; };
>@@ -2334,6 +2345,7 @@
> 				3FCC4FE41EC4E8520076E37C /* PictureInPictureDelegate.mm */,
> 				83BAEE8C1EF4625500DDE894 /* PluginLoadClientPolicies.mm */,
> 				C95501BE19AD2FAF0049BE3E /* Preferences.mm */,
>+				CD227E43211A4D5D00D285AF /* PreferredAudioBufferSize.mm */,
> 				7C1AF7931E8DCBAB002645B9 /* PrepareForMoveToWindow.mm */,
> 				518C1152205B04F9001FF4AE /* ProcessSwapOnNavigation.mm */,
> 				5798E2AF1CAF5C2800C5CBA0 /* ProvisionalURLNotChange.mm */,
>@@ -2714,6 +2726,9 @@
> 				51714EB31CF8C761004723C4 /* WebProcessKillIDBCleanup-2.html */,
> 				5120C83B1E674E350025B250 /* WebsiteDataStoreCustomPaths.html */,
> 				2E131C171D83A97E001BA36C /* wide-autoplaying-video-with-audio.html */,
>+				CD577798211CDE8F001B371E /* web-audio-only.html */,
>+				CD57779A211CE6B7001B371E /* audio-with-web-audio.html */,
>+				CD57779B211CE6CE001B371E /* video-with-audio-and-web-audio.html */,
> 			);
> 			name = Resources;
> 			sourceTree = "<group>";
>@@ -3729,6 +3744,7 @@
> 				CD78E11D1DB7EA660014A2DE /* FullscreenDelegate.mm in Sources */,
> 				7C83E0BD1D0A650C00FEBCF3 /* FullscreenTopContentInset.mm in Sources */,
> 				CDBFCC451A9FF45300A7B691 /* FullscreenZoomInitialFrame.mm in Sources */,
>+				CD227E44211A4D5D00D285AF /* PreferredAudioBufferSize.mm in Sources */,
> 				83DB79691EF63B3C00BFA5E5 /* Function.cpp in Sources */,
> 				7CCE7EF81A411AE600447C4C /* Geolocation.cpp in Sources */,
> 				631EFFF61E7B5E8D00D2EBB8 /* Geolocation.mm in Sources */,
>diff --git a/Tools/TestWebKitAPI/Tests/WebKit/PreferredAudioBufferSize.mm b/Tools/TestWebKitAPI/Tests/WebKit/PreferredAudioBufferSize.mm
>new file mode 100644
>index 0000000000000000000000000000000000000000..77557ac2e93338a5a4fa3e9bc71bb33cdda469ba
>--- /dev/null
>+++ b/Tools/TestWebKitAPI/Tests/WebKit/PreferredAudioBufferSize.mm
>@@ -0,0 +1,27 @@
>+/*
>+ * Copyright (C) 2018 Apple Inc. All rights reserved.
>+ *
>+ * Redistribution and use in source and binary forms, with or without
>+ * modification, are permitted provided that the following conditions
>+ * are met:
>+ * 1. Redistributions of source code must retain the above copyright
>+ *    notice, this list of conditions and the following disclaimer.
>+ * 2. Redistributions in binary form must reproduce the above copyright
>+ *    notice, this list of conditions and the following disclaimer in the
>+ *    documentation and/or other materials provided with the distribution.
>+ *
>+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
>+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
>+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
>+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
>+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
>+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
>+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
>+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
>+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
>+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
>+ * THE POSSIBILITY OF SUCH DAMAGE.
>+ */
>+
>+#include "config.h"
>+#include "PreferredAudioBufferSize.h"
>diff --git a/Tools/TestWebKitAPI/Tests/WebKitCocoa/PreferredAudioBufferSize.mm b/Tools/TestWebKitAPI/Tests/WebKitCocoa/PreferredAudioBufferSize.mm
>new file mode 100644
>index 0000000000000000000000000000000000000000..05dd87f67d37f86bd75bde3d35b085537defde7b
>--- /dev/null
>+++ b/Tools/TestWebKitAPI/Tests/WebKitCocoa/PreferredAudioBufferSize.mm
>@@ -0,0 +1,119 @@
>+/*
>+ * Copyright (C) 2018 Apple Inc. All rights reserved.
>+ *
>+ * Redistribution and use in source and binary forms, with or without
>+ * modification, are permitted provided that the following conditions
>+ * are met:
>+ * 1. Redistributions of source code must retain the above copyright
>+ *    notice, this list of conditions and the following disclaimer.
>+ * 2. Redistributions in binary form must reproduce the above copyright
>+ *    notice, this list of conditions and the following disclaimer in the
>+ *    documentation and/or other materials provided with the distribution.
>+ *
>+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
>+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
>+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
>+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
>+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
>+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
>+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
>+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
>+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
>+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
>+ * THE POSSIBILITY OF SUCH DAMAGE.
>+ */
>+
>+#include "config.h"
>+
>+#if WK_HAVE_C_SPI && WK_API_ENABLED
>+
>+#import "PlatformUtilities.h"
>+#import "Test.h"
>+#import "TestWKWebView.h"
>+#import "WebCoreTestSupport.h"
>+#import <JavaScriptCore/JSContext.h>
>+#import <WebKit/WKPreferencesPrivate.h>
>+#import <WebKit/WKUIDelegatePrivate.h>
>+#import <WebKit/_WKFullscreenDelegate.h>
>+#import <wtf/RetainPtr.h>
>+
>+class PreferredAudioBufferSize : public testing::Test {
>+public:
>+    void SetUp() override
>+    {
>+        configuration = adoptNS([[WKWebViewConfiguration alloc] init]);
>+        WKRetainPtr<WKContextRef> context(AdoptWK, TestWebKitAPI::Util::createContextForInjectedBundleTest("InternalsInjectedBundleTest"));
>+        configuration.get().processPool = (WKProcessPool *)context.get();
>+        configuration.get().preferences._lowPowerVideoAudioBufferSizeEnabled = YES;
>+    }
>+
>+    void createView()
>+    {
>+        webView = adoptNS([[TestWKWebView alloc] initWithFrame:NSMakeRect(0, 0, 300, 300) configuration:configuration.get() addToWindow:YES]);
>+    }
>+
>+    double preferredAudioBufferSize() const
>+    {
>+        return [webView stringByEvaluatingJavaScript:@"window.internals.preferredAudioBufferSize()"].doubleValue;
>+    }
>+
>+    RetainPtr<WKWebViewConfiguration> configuration;
>+    RetainPtr<TestWKWebView> webView;
>+};
>+
>+TEST_F(PreferredAudioBufferSize, Empty)
>+{
>+    createView();
>+    [webView synchronouslyLoadHTMLString:@""];
>+    EXPECT_EQ(512, preferredAudioBufferSize());
>+}
>+
>+TEST_F(PreferredAudioBufferSize, AudioElement)
>+{
>+    createView();
>+    [webView synchronouslyLoadTestPageNamed:@"audio-only"];
>+    [webView waitForMessage:@"playing"];
>+    EXPECT_EQ(4096, preferredAudioBufferSize());
>+}
>+
>+TEST_F(PreferredAudioBufferSize, WebAudio)
>+{
>+    createView();
>+    [webView synchronouslyLoadTestPageNamed:@"web-audio-only"];
>+    [webView waitForMessage:@"playing"];
>+    EXPECT_EQ(128, preferredAudioBufferSize());
>+}
>+
>+TEST_F(PreferredAudioBufferSize, VideoOnly)
>+{
>+    createView();
>+    [webView synchronouslyLoadTestPageNamed:@"video-without-audio"];
>+    [webView waitForMessage:@"playing"];
>+    EXPECT_EQ(512, preferredAudioBufferSize());
>+}
>+
>+TEST_F(PreferredAudioBufferSize, VideoWithAudio)
>+{
>+    createView();
>+    [webView synchronouslyLoadTestPageNamed:@"video-with-audio"];
>+    [webView waitForMessage:@"playing"];
>+    EXPECT_EQ(4096, preferredAudioBufferSize());
>+}
>+
>+TEST_F(PreferredAudioBufferSize, AudioWithWebAudio)
>+{
>+    createView();
>+    [webView synchronouslyLoadTestPageNamed:@"audio-with-web-audio"];
>+    [webView waitForMessage:@"playing"];
>+    EXPECT_EQ(128, preferredAudioBufferSize());
>+}
>+
>+TEST_F(PreferredAudioBufferSize, VideoWithAudioAndWebAudio)
>+{
>+    createView();
>+    [webView synchronouslyLoadTestPageNamed:@"video-with-audio-and-web-audio"];
>+    [webView waitForMessage:@"playing"];
>+    EXPECT_EQ(128, preferredAudioBufferSize());
>+}
>+
>+#endif // WK_HAVE_C_SPI && WK_API_ENABLED
>diff --git a/Tools/TestWebKitAPI/Tests/WebKitCocoa/audio-with-web-audio.html b/Tools/TestWebKitAPI/Tests/WebKitCocoa/audio-with-web-audio.html
>new file mode 100644
>index 0000000000000000000000000000000000000000..a32661f2e9e1e9e4a06beb8d50e63dc911b6547f
>--- /dev/null
>+++ b/Tools/TestWebKitAPI/Tests/WebKitCocoa/audio-with-web-audio.html
>@@ -0,0 +1,21 @@
>+<!DOCTYPE html>
>+<html>
>+<head>
>+    <script>
>+        window.addEventListener('load', async event => {
>+            let context = new webkitAudioContext();
>+            let node = context.createBufferSource();
>+            node.connect(context.destination);
>+
>+            let audio = new Audio();
>+            audio.src = "video-with-audio.mp4";
>+            
>+            Promise.all([context.resume(), audio.play()]).then(() => {
>+                window.webkit.messageHandlers.testHandler.postMessage('playing');
>+            }, () => {
>+                window.webkit.messageHandlers.testHandler.postMessage('not playing');
>+            });
>+        });
>+    </script>
>+</head>
>+</html>
>diff --git a/Tools/TestWebKitAPI/Tests/WebKitCocoa/video-with-audio-and-web-audio.html b/Tools/TestWebKitAPI/Tests/WebKitCocoa/video-with-audio-and-web-audio.html
>new file mode 100644
>index 0000000000000000000000000000000000000000..33485d9a2b304fb92da7008bc8d15f4f12655b5c
>--- /dev/null
>+++ b/Tools/TestWebKitAPI/Tests/WebKitCocoa/video-with-audio-and-web-audio.html
>@@ -0,0 +1,22 @@
>+
>+<!DOCTYPE html>
>+<html>
>+<head>
>+    <script>
>+        window.addEventListener('load', event => {
>+            let context = new webkitAudioContext();
>+            let node = context.createBufferSource();
>+            node.connect(context.destination);
>+
>+            let video = document.querySelector('video');
>+            
>+            Promise.all([context.resume(), video.play()]).then(() => {
>+                window.webkit.messageHandlers.testHandler.postMessage('playing');
>+            }, () => {
>+                window.webkit.messageHandlers.testHandler.postMessage('not playing');
>+            });
>+        });
>+    </script>
>+</head>
>+    <video src="video-with-audio.mp4"></video>
>+</html>
>diff --git a/Tools/TestWebKitAPI/Tests/WebKitCocoa/web-audio-only.html b/Tools/TestWebKitAPI/Tests/WebKitCocoa/web-audio-only.html
>new file mode 100644
>index 0000000000000000000000000000000000000000..2167c9dc24fbedb8860b5bc9e62ade4442ddf578
>--- /dev/null
>+++ b/Tools/TestWebKitAPI/Tests/WebKitCocoa/web-audio-only.html
>@@ -0,0 +1,21 @@
>+<!DOCTYPE html>
>+<html>
>+<head>
>+    <script>
>+    window.addEventListener('load', async event => {
>+        var context = new webkitAudioContext();
>+        context.addEventListener('statechange', statechange);
>+        node = context.createBufferSource();
>+        node.connect(context.destination);
>+        context.resume();
>+    });
>+    
>+    function statechange(event) {
>+        var context = event.target;
>+        var message = context.state === 'running' ? 'playing' : 'not playing';
>+        window.webkit.messageHandlers.testHandler.postMessage(message);
>+    }
>+    </script>
>+</head>
>+</html>
>+

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Attachments on bug 188452: 346863 | 346864 | 346865