Attachment 349910 Details for Bug 189565 – Patch

[patch] Patch

bug-189565-20180917111853.patch (text/plain), 60.70 KB, created by Jer Noble on 2018-09-17 11:18:54 PDT

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Creator: Jer Noble

Created: 2018-09-17 11:18:54 PDT

Size: 60.70 KB

patch

obsolete

>Subversion Revision: 236018
>diff --git a/Source/WTF/ChangeLog b/Source/WTF/ChangeLog
>index 0461988bd7275865156ca93baf690def8f163e7e..312a005e8206a3bc7c5cbb5cca3e69f4e738f193 100644
>--- a/Source/WTF/ChangeLog
>+++ b/Source/WTF/ChangeLog
>@@ -1,3 +1,18 @@
>+2018-09-12  Jer Noble  <jer.noble@apple.com>
>+
>+        Add support for HEVC codec types in Media Capabilities
>+        https://bugs.webkit.org/show_bug.cgi?id=189565
>+
>+        Reviewed by NOBODY (OOPS!).
>+
>+        Extract the toIntegralType template into its own header.
>+
>+        * wtf/CMakeLists.txt:
>+        * wtf/text/StringConversion.h: Added.
>+        (isCharacterAllowedInBase):
>+        (toIntegralType):
>+        * wtf/text/WTFString.cpp:
>+
> 2018-08-29  Jer Noble  <jer.noble@apple.com>
> 
>         Enable USE_MEDIAREMOTE on iOS
>diff --git a/Source/WebCore/ChangeLog b/Source/WebCore/ChangeLog
>index 3cdbedc2603dd5ed75325ac42bb67361c06c8229..3a0f0c1aac7f774994a91562a90c24da71103882 100644
>--- a/Source/WebCore/ChangeLog
>+++ b/Source/WebCore/ChangeLog
>@@ -1,3 +1,42 @@
>+2018-09-12  Jer Noble  <jer.noble@apple.com>
>+
>+        Add support for HEVC codec types in Media Capabilities
>+        https://bugs.webkit.org/show_bug.cgi?id=189565
>+
>+        Reviewed by NOBODY (OOPS!).
>+
>+        Test: media/hevc-codec-parameters.html
>+
>+        Add some utility methods for parsing HEVC codec strings, and using those parsed
>+        values to query the platform for detailed support for HEVC decoding.
>+
>+        Drive-by fix: Modify MediaEngineConfigurationFactory to allow for null function
>+        pointers in the encode/decode factory pair.
>+
>+        * Sources.txt:
>+        * SourcesCocoa.txt:
>+        * WebCore.xcodeproj/project.pbxproj:
>+        * platform/cocoa/VideoToolboxSoftLink.cpp:
>+        * platform/cocoa/VideoToolboxSoftLink.h:
>+        * platform/graphics/HEVCUtilities.cpp: Added.
>+        (WebCore::parseHEVCCodecParameters):
>+        * platform/graphics/HEVCUtilities.h: Added.
>+        * platform/graphics/cocoa/HEVCUtilitiesCocoa.cpp: Added.
>+        (WebCore::validateHEVCParameters):
>+        * platform/graphics/cocoa/HEVCUtilitiesCocoa.h: Added.
>+        * platform/graphics/cocoa/MediaEngineConfigurationFactoryCocoa.cpp: Added.
>+        (WebCore::videoCodecTypeFromRFC4281Type):
>+        (WebCore::createMediaPlayerDecodingConfigurationCocoa):
>+        * platform/graphics/cocoa/MediaEngineConfigurationFactoryCocoa.h: Added.
>+        * platform/mediacapabilities/MediaEngineConfigurationFactory.cpp:
>+        (WebCore::factories):
>+        (WebCore::MediaEngineConfigurationFactory::createDecodingConfiguration):
>+        (WebCore::MediaEngineConfigurationFactory::createEncodingConfiguration):
>+        * testing/Internals.cpp:
>+        (WebCore::Internals::parseHEVCCodecParameters):
>+        * testing/Internals.h:
>+        * testing/Internals.idl:
>+
> 2018-08-29  Jer Noble  <jer.noble@apple.com>
> 
>         Enable USE_MEDIAREMOTE on iOS
>diff --git a/Source/WTF/WTF.xcodeproj/project.pbxproj b/Source/WTF/WTF.xcodeproj/project.pbxproj
>index e620521105ca4fca0694cef945b57566e6a9faff..7be0a17ad0f1698f4ce1e051c4c00eb4e93e39f4 100644
>--- a/Source/WTF/WTF.xcodeproj/project.pbxproj
>+++ b/Source/WTF/WTF.xcodeproj/project.pbxproj
>@@ -329,6 +329,7 @@
> 		2CDED0EE18115C38004DBA70 /* RunLoopCF.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = RunLoopCF.cpp; sourceTree = "<group>"; };
> 		2CDED0F118115C85004DBA70 /* RunLoop.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = RunLoop.cpp; sourceTree = "<group>"; };
> 		2CDED0F218115C85004DBA70 /* RunLoop.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = RunLoop.h; sourceTree = "<group>"; };
>+		304CA4E41375437EBE931D03 /* Markable.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = Markable.h; sourceTree = "<group>"; };
> 		3137E1D7DBD84AC38FAE4D34 /* IndexSet.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = IndexSet.h; sourceTree = "<group>"; };
> 		313EDEC9778E49C9BEA91CFC /* StackTrace.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = StackTrace.cpp; sourceTree = "<group>"; };
> 		37C7CC291EA40A73007BD956 /* WeakLinking.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = WeakLinking.h; sourceTree = "<group>"; };
>@@ -604,6 +605,7 @@
> 		C4F8A93619C65EB400B2B15D /* Stopwatch.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = Stopwatch.h; sourceTree = "<group>"; };
> 		C6F050790D9C432A99085E75 /* ASCIILiteral.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = ASCIILiteral.cpp; sourceTree = "<group>"; };
> 		C8F597CA2A57417FBAB92FD6 /* RandomDevice.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = RandomDevice.cpp; sourceTree = "<group>"; };
>+		CD00360D21501F7800F4ED4C /* StringToIntegerConversion.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = StringToIntegerConversion.h; sourceTree = "<group>"; };
> 		CD2D0D10212C76E60018C784 /* WeakPtrContainer.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = WeakPtrContainer.h; sourceTree = "<group>"; };
> 		CD5497AA15857D0300B5BC30 /* MediaTime.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = MediaTime.cpp; sourceTree = "<group>"; };
> 		CD5497AB15857D0300B5BC30 /* MediaTime.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = MediaTime.h; sourceTree = "<group>"; };
>@@ -633,7 +635,6 @@
> 		E38D6E261F5522E300A75CC4 /* StringBuilderJSON.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = StringBuilderJSON.cpp; sourceTree = "<group>"; };
> 		E3A32BC21FC830E2007D7E76 /* JSValueMalloc.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = JSValueMalloc.cpp; sourceTree = "<group>"; };
> 		E3A32BC31FC830E2007D7E76 /* JSValueMalloc.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = JSValueMalloc.h; sourceTree = "<group>"; };
>-		304CA4E41375437EBE931D03 /* Markable.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = Markable.h; sourceTree = "<group>"; };
> 		E3CF76902115D6BA0091DE48 /* CompactPointerTuple.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = CompactPointerTuple.h; sourceTree = "<group>"; };
> 		E3E158251EADA53C004A079D /* SystemFree.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = SystemFree.h; sourceTree = "<group>"; };
> 		E431CC4A21187ADB000C8A07 /* DispatchSPI.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = DispatchSPI.h; sourceTree = "<group>"; };
>@@ -1228,6 +1229,7 @@
> 				A8A47328151A825B004123FF /* StringImpl.cpp */,
> 				A8A47329151A825B004123FF /* StringImpl.h */,
> 				A8A4732A151A825B004123FF /* StringOperators.h */,
>+				CD00360D21501F7800F4ED4C /* StringToIntegerConversion.h */,
> 				93F1993D19D7958D00C2390B /* StringView.cpp */,
> 				1A6EB1DF187D0BD30030126F /* StringView.h */,
> 				F72BBDB107FA424886178B9E /* SymbolImpl.cpp */,
>diff --git a/Source/WTF/wtf/CMakeLists.txt b/Source/WTF/wtf/CMakeLists.txt
>index fb348abc3f82d05398581718d64ac0f523dcfca6..83f9a4cc57a9f21b609b8a65e26664ba162361c2 100644
>--- a/Source/WTF/wtf/CMakeLists.txt
>+++ b/Source/WTF/wtf/CMakeLists.txt
>@@ -297,6 +297,7 @@ set(WTF_PUBLIC_HEADERS
>     text/StringCommon.h
>     text/StringConcatenate.h
>     text/StringConcatenateNumbers.h
>+    text/StringConversion.h
>     text/StringHash.h
>     text/StringHasher.h
>     text/StringImpl.h
>diff --git a/Source/WTF/wtf/text/StringToIntegerConversion.h b/Source/WTF/wtf/text/StringToIntegerConversion.h
>new file mode 100644
>index 0000000000000000000000000000000000000000..ed4b2b2c0def130a0faa1d3b484b8a7a4e6bf055
>--- /dev/null
>+++ b/Source/WTF/wtf/text/StringToIntegerConversion.h
>@@ -0,0 +1,131 @@
>+/*
>+ * 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.
>+ */
>+
>+#pragma once
>+
>+namespace WTF {
>+
>+inline bool isCharacterAllowedInBase(UChar c, int base)
>+{
>+    if (c > 0x7F)
>+        return false;
>+    if (isASCIIDigit(c))
>+        return c - '0' < base;
>+    if (isASCIIAlpha(c)) {
>+        if (base > 36)
>+            base = 36;
>+        return (c >= 'a' && c < 'a' + base - 10)
>+            || (c >= 'A' && c < 'A' + base - 10);
>+    }
>+    return false;
>+}
>+
>+template<typename IntegralType, typename CharacterType>
>+inline IntegralType toIntegralType(const CharacterType* data, size_t length, bool* ok = nullptr, int base = 10)
>+{
>+    static const IntegralType integralMax = std::numeric_limits<IntegralType>::max();
>+    static const bool isSigned = std::numeric_limits<IntegralType>::is_signed;
>+    const IntegralType maxMultiplier = integralMax / base;
>+
>+    IntegralType value = 0;
>+    bool isOk = false;
>+    bool isNegative = false;
>+
>+    if (!data)
>+        goto bye;
>+
>+    // skip leading whitespace
>+    while (length && isSpaceOrNewline(*data)) {
>+        --length;
>+        ++data;
>+    }
>+
>+    if (isSigned && length && *data == '-') {
>+        --length;
>+        ++data;
>+        isNegative = true;
>+    } else if (length && *data == '+') {
>+        --length;
>+        ++data;
>+    }
>+
>+    if (!length || !isCharacterAllowedInBase(*data, base))
>+        goto bye;
>+
>+    while (length && isCharacterAllowedInBase(*data, base)) {
>+        --length;
>+        IntegralType digitValue;
>+        auto c = *data;
>+        if (isASCIIDigit(c))
>+            digitValue = c - '0';
>+        else if (c >= 'a')
>+            digitValue = c - 'a' + 10;
>+        else
>+            digitValue = c - 'A' + 10;
>+
>+        if (value > maxMultiplier || (value == maxMultiplier && digitValue > (integralMax % base) + isNegative))
>+            goto bye;
>+
>+        value = base * value + digitValue;
>+        ++data;
>+    }
>+
>+#if COMPILER(MSVC)
>+#pragma warning(push, 0)
>+#pragma warning(disable:4146)
>+#endif
>+
>+    if (isNegative)
>+        value = -value;
>+
>+#if COMPILER(MSVC)
>+#pragma warning(pop)
>+#endif
>+
>+    // skip trailing space
>+    while (length && isSpaceOrNewline(*data)) {
>+        --length;
>+        ++data;
>+    }
>+
>+    if (!length)
>+        isOk = true;
>+bye:
>+    if (ok)
>+        *ok = isOk;
>+    return isOk ? value : 0;
>+}
>+
>+template<typename IntegralType, typename StringOrStringView>
>+inline IntegralType toIntegralType(const StringOrStringView& stringView, bool* ok = nullptr, int base = 10)
>+{
>+    if (stringView.is8Bit())
>+        return toIntegralType<IntegralType, LChar>(stringView.characters8(), stringView.length(), ok, base);
>+    return toIntegralType<IntegralType, UChar>(stringView.characters16(), stringView.length(), ok, base);
>+}
>+
>+}
>+
>+using WTF::toIntegralType;
>diff --git a/Source/WTF/wtf/text/WTFString.cpp b/Source/WTF/wtf/text/WTFString.cpp
>index a87529fc6b3b82f238ae750ff9c293d648b2c3e7..38b68f5f081c18d73199a36a62a87fef86c91c25 100644
>--- a/Source/WTF/wtf/text/WTFString.cpp
>+++ b/Source/WTF/wtf/text/WTFString.cpp
>@@ -29,9 +29,10 @@
> #include <wtf/HexNumber.h>
> #include <wtf/MathExtras.h>
> #include <wtf/NeverDestroyed.h>
>-#include <wtf/text/CString.h>
> #include <wtf/Vector.h>
> #include <wtf/dtoa.h>
>+#include <wtf/text/CString.h>
>+#include <wtf/text/StringToIntegerConversion.h>
> #include <wtf/unicode/CharacterNames.h>
> #include <wtf/unicode/UTF8.h>
> 
>@@ -930,98 +931,6 @@ String String::fromUTF8WithLatin1Fallback(const LChar* string, size_t size)
> }
> 
> // String Operations
>-
>-static bool isCharacterAllowedInBase(UChar c, int base)
>-{
>-    if (c > 0x7F)
>-        return false;
>-    if (isASCIIDigit(c))
>-        return c - '0' < base;
>-    if (isASCIIAlpha(c)) {
>-        if (base > 36)
>-            base = 36;
>-        return (c >= 'a' && c < 'a' + base - 10)
>-            || (c >= 'A' && c < 'A' + base - 10);
>-    }
>-    return false;
>-}
>-
>-template<typename IntegralType, typename CharacterType>
>-static inline IntegralType toIntegralType(const CharacterType* data, size_t length, bool* ok, int base)
>-{
>-    static const IntegralType integralMax = std::numeric_limits<IntegralType>::max();
>-    static const bool isSigned = std::numeric_limits<IntegralType>::is_signed;
>-    const IntegralType maxMultiplier = integralMax / base;
>-
>-    IntegralType value = 0;
>-    bool isOk = false;
>-    bool isNegative = false;
>-
>-    if (!data)
>-        goto bye;
>-
>-    // skip leading whitespace
>-    while (length && isSpaceOrNewline(*data)) {
>-        --length;
>-        ++data;
>-    }
>-
>-    if (isSigned && length && *data == '-') {
>-        --length;
>-        ++data;
>-        isNegative = true;
>-    } else if (length && *data == '+') {
>-        --length;
>-        ++data;
>-    }
>-
>-    if (!length || !isCharacterAllowedInBase(*data, base))
>-        goto bye;
>-
>-    while (length && isCharacterAllowedInBase(*data, base)) {
>-        --length;
>-        IntegralType digitValue;
>-        auto c = *data;
>-        if (isASCIIDigit(c))
>-            digitValue = c - '0';
>-        else if (c >= 'a')
>-            digitValue = c - 'a' + 10;
>-        else
>-            digitValue = c - 'A' + 10;
>-
>-        if (value > maxMultiplier || (value == maxMultiplier && digitValue > (integralMax % base) + isNegative))
>-            goto bye;
>-
>-        value = base * value + digitValue;
>-        ++data;
>-    }
>-
>-#if COMPILER(MSVC)
>-#pragma warning(push, 0)
>-#pragma warning(disable:4146)
>-#endif
>-
>-    if (isNegative)
>-        value = -value;
>-
>-#if COMPILER(MSVC)
>-#pragma warning(pop)
>-#endif
>-
>-    // skip trailing space
>-    while (length && isSpaceOrNewline(*data)) {
>-        --length;
>-        ++data;
>-    }
>-
>-    if (!length)
>-        isOk = true;
>-bye:
>-    if (ok)
>-        *ok = isOk;
>-    return isOk ? value : 0;
>-}
>-
> template<typename CharacterType>
> static unsigned lengthOfCharactersAsInteger(const CharacterType* data, size_t length)
> {
>diff --git a/Source/WebCore/Sources.txt b/Source/WebCore/Sources.txt
>index 789006d9ce0dd0ecde606ba3ad3af101aa92dca6..a13d20d9391a5cdce73697e7abbfbc1b0b80231e 100644
>--- a/Source/WebCore/Sources.txt
>+++ b/Source/WebCore/Sources.txt
>@@ -1622,6 +1622,7 @@ platform/graphics/GraphicsLayer.cpp
> platform/graphics/GraphicsLayerTransform.cpp
> platform/graphics/GraphicsLayerUpdater.cpp
> platform/graphics/GraphicsTypes.cpp
>+platform/graphics/HEVCUtilities.cpp
> platform/graphics/Image.cpp
> platform/graphics/ImageBuffer.cpp
> platform/graphics/ImageDecoder.cpp
>diff --git a/Source/WebCore/SourcesCocoa.txt b/Source/WebCore/SourcesCocoa.txt
>index 8033a36a1e645a4d4bc516ac8fe7a56f1e419f49..62bfd8d8c207a0949893e5c458abce707bcff67f 100644
>--- a/Source/WebCore/SourcesCocoa.txt
>+++ b/Source/WebCore/SourcesCocoa.txt
>@@ -301,8 +301,10 @@ platform/graphics/cocoa/FontCocoa.mm
> platform/graphics/cocoa/FontDescriptionCocoa.cpp
> platform/graphics/cocoa/FontFamilySpecificationCoreText.cpp
> platform/graphics/cocoa/FontPlatformDataCocoa.mm
>+platform/graphics/cocoa/HEVCUtilitiesCocoa.cpp
> platform/graphics/cocoa/IOSurface.mm
> platform/graphics/cocoa/IOSurfacePoolCocoa.mm
>+platform/graphics/cocoa/MediaEngineConfigurationFactoryCocoa.cpp
> platform/graphics/cocoa/WebActionDisablingCALayerDelegate.mm
> platform/graphics/cocoa/WebCoreCALayerExtras.mm
> platform/graphics/cocoa/WebCoreDecompressionSession.mm
>diff --git a/Source/WebCore/WebCore.xcodeproj/project.pbxproj b/Source/WebCore/WebCore.xcodeproj/project.pbxproj
>index 7b3ce3348ab7724d0cb4b7bb6481e163ce063328..6172a038ba3bf57298dd85037ad201e2226aeb80 100644
>--- a/Source/WebCore/WebCore.xcodeproj/project.pbxproj
>+++ b/Source/WebCore/WebCore.xcodeproj/project.pbxproj
>@@ -4033,6 +4033,8 @@
> 		CDA29A171CBDA56C00901CCF /* PlaybackSessionInterfaceMac.h in Headers */ = {isa = PBXBuildFile; fileRef = CDA29A151CBDA56C00901CCF /* PlaybackSessionInterfaceMac.h */; settings = {ATTRIBUTES = (Private, ); }; };
> 		CDA29A301CBF74D400901CCF /* PlaybackSessionInterfaceAVKit.mm in Sources */ = {isa = PBXBuildFile; fileRef = CDA29A2F1CBF73FC00901CCF /* PlaybackSessionInterfaceAVKit.mm */; };
> 		CDA29A321CC01A9500901CCF /* PlaybackSessionInterfaceAVKit.h in Headers */ = {isa = PBXBuildFile; fileRef = CDA29A2E1CBF73FC00901CCF /* PlaybackSessionInterfaceAVKit.h */; settings = {ATTRIBUTES = (Private, ); }; };
>+		CDA595932146DEC300A84185 /* HEVCUtilities.h in Headers */ = {isa = PBXBuildFile; fileRef = CDA595912146DEC300A84185 /* HEVCUtilities.h */; };
>+		CDA595982146DF7800A84185 /* HEVCUtilitiesCocoa.h in Headers */ = {isa = PBXBuildFile; fileRef = CDA595962146DF7800A84185 /* HEVCUtilitiesCocoa.h */; };
> 		CDA79827170A279100D45C55 /* AudioSessionIOS.mm in Sources */ = {isa = PBXBuildFile; fileRef = CDA79825170A279000D45C55 /* AudioSessionIOS.mm */; };
> 		CDA7982A170A3D0000D45C55 /* AudioSession.h in Headers */ = {isa = PBXBuildFile; fileRef = CDA79821170A22DC00D45C55 /* AudioSession.h */; settings = {ATTRIBUTES = (Private, ); }; };
> 		CDA98E0B1603CD6000FEA3B1 /* LegacyCDM.cpp in Sources */ = {isa = PBXBuildFile; fileRef = CDA98E091603CD5900FEA3B1 /* LegacyCDM.cpp */; };
>@@ -4046,6 +4048,7 @@
> 		CDC224281F756966005F077B /* CDMInstanceFairPlayStreamingAVFObjC.mm in Sources */ = {isa = PBXBuildFile; fileRef = CD78A2EC1F75648600DE371B /* CDMInstanceFairPlayStreamingAVFObjC.mm */; };
> 		CDC26B40160A8CC60026757B /* LegacyMockCDM.cpp in Sources */ = {isa = PBXBuildFile; fileRef = CDC26B3C160A62B00026757B /* LegacyMockCDM.cpp */; };
> 		CDC26B41160A8CCE0026757B /* LegacyMockCDM.h in Headers */ = {isa = PBXBuildFile; fileRef = CDC26B3D160A62B00026757B /* LegacyMockCDM.h */; };
>+		CDC48AC92149CF2A0024FD59 /* MediaEngineConfigurationFactoryCocoa.h in Headers */ = {isa = PBXBuildFile; fileRef = CDC48AC72149CF2A0024FD59 /* MediaEngineConfigurationFactoryCocoa.h */; };
> 		CDC675221EAEA9B700727C84 /* AVAudioSessionCaptureDeviceManager.mm in Sources */ = {isa = PBXBuildFile; fileRef = CDC675201EAEA9B700727C84 /* AVAudioSessionCaptureDeviceManager.mm */; };
> 		CDC675231EAEA9B700727C84 /* AVAudioSessionCaptureDeviceManager.h in Headers */ = {isa = PBXBuildFile; fileRef = CDC675211EAEA9B700727C84 /* AVAudioSessionCaptureDeviceManager.h */; };
> 		CDC675271EAEA9D400727C84 /* AVAudioSessionCaptureDevice.h in Headers */ = {isa = PBXBuildFile; fileRef = CDC675251EAEA9D400727C84 /* AVAudioSessionCaptureDevice.h */; };
>@@ -13333,6 +13336,10 @@
> 		CDA29A2D1CBF73FC00901CCF /* WebAVPlayerController.mm */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.objcpp; path = WebAVPlayerController.mm; sourceTree = "<group>"; };
> 		CDA29A2E1CBF73FC00901CCF /* PlaybackSessionInterfaceAVKit.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = PlaybackSessionInterfaceAVKit.h; sourceTree = "<group>"; };
> 		CDA29A2F1CBF73FC00901CCF /* PlaybackSessionInterfaceAVKit.mm */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.objcpp; path = PlaybackSessionInterfaceAVKit.mm; sourceTree = "<group>"; };
>+		CDA595912146DEC300A84185 /* HEVCUtilities.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = HEVCUtilities.h; sourceTree = "<group>"; };
>+		CDA595922146DEC300A84185 /* HEVCUtilities.cpp */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.cpp.cpp; path = HEVCUtilities.cpp; sourceTree = "<group>"; };
>+		CDA595962146DF7800A84185 /* HEVCUtilitiesCocoa.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = HEVCUtilitiesCocoa.h; sourceTree = "<group>"; };
>+		CDA595972146DF7800A84185 /* HEVCUtilitiesCocoa.cpp */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.cpp.cpp; path = HEVCUtilitiesCocoa.cpp; sourceTree = "<group>"; };
> 		CDA79821170A22DC00D45C55 /* AudioSession.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = AudioSession.h; sourceTree = "<group>"; };
> 		CDA79823170A258300D45C55 /* AudioSession.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = AudioSession.cpp; sourceTree = "<group>"; };
> 		CDA79825170A279000D45C55 /* AudioSessionIOS.mm */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.objcpp; path = AudioSessionIOS.mm; sourceTree = "<group>"; };
>@@ -13389,6 +13396,8 @@
> 		CDC1DD4117CC2C48008CB55D /* mediaControlsApple.css */ = {isa = PBXFileReference; lastKnownFileType = text.css; path = mediaControlsApple.css; sourceTree = "<group>"; };
> 		CDC26B3C160A62B00026757B /* LegacyMockCDM.cpp */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.cpp.cpp; path = LegacyMockCDM.cpp; sourceTree = "<group>"; };
> 		CDC26B3D160A62B00026757B /* LegacyMockCDM.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = LegacyMockCDM.h; sourceTree = "<group>"; };
>+		CDC48AC72149CF2A0024FD59 /* MediaEngineConfigurationFactoryCocoa.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = MediaEngineConfigurationFactoryCocoa.h; sourceTree = "<group>"; };
>+		CDC48AC82149CF2A0024FD59 /* MediaEngineConfigurationFactoryCocoa.cpp */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.cpp.cpp; path = MediaEngineConfigurationFactoryCocoa.cpp; sourceTree = "<group>"; };
> 		CDC675201EAEA9B700727C84 /* AVAudioSessionCaptureDeviceManager.mm */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.cpp.objcpp; path = AVAudioSessionCaptureDeviceManager.mm; sourceTree = "<group>"; };
> 		CDC675211EAEA9B700727C84 /* AVAudioSessionCaptureDeviceManager.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = AVAudioSessionCaptureDeviceManager.h; sourceTree = "<group>"; };
> 		CDC675241EAEA9D400727C84 /* AVAudioSessionCaptureDevice.mm */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.cpp.objcpp; path = AVAudioSessionCaptureDevice.mm; sourceTree = "<group>"; };
>@@ -23715,6 +23724,8 @@
> 				B2A015940AF6CD53006BCE0E /* GraphicsTypes.cpp */,
> 				B2A015950AF6CD53006BCE0E /* GraphicsTypes.h */,
> 				77A17A7A12F2890B004E02F6 /* GraphicsTypes3D.h */,
>+				CDA595922146DEC300A84185 /* HEVCUtilities.cpp */,
>+				CDA595912146DEC300A84185 /* HEVCUtilities.h */,
> 				B27535400B053814002CE64F /* Icon.h */,
> 				B27535410B053814002CE64F /* Image.cpp */,
> 				B27535420B053814002CE64F /* Image.h */,
>@@ -23927,9 +23938,13 @@
> 				B5320D6A122A24E9002D1440 /* FontPlatformDataCocoa.mm */,
> 				49FFBF1C11C8550E006A7118 /* GraphicsContext3DCocoa.mm */,
> 				B277B4030B22F37C0004BEC6 /* GraphicsContextCocoa.mm */,
>+				CDA595972146DF7800A84185 /* HEVCUtilitiesCocoa.cpp */,
>+				CDA595962146DF7800A84185 /* HEVCUtilitiesCocoa.h */,
> 				2D0B4AA918DA1CCD00434DE1 /* IOSurface.h */,
> 				2D0B4AAA18DA1CCD00434DE1 /* IOSurface.mm */,
> 				AD9FF6E01908391D003B61E0 /* IOSurfacePoolCocoa.mm */,
>+				CDC48AC72149CF2A0024FD59 /* MediaEngineConfigurationFactoryCocoa.h */,
>+				CDC48AC82149CF2A0024FD59 /* MediaEngineConfigurationFactoryCocoa.cpp */,
> 				526724F21CB2FDF60075974D /* TextTrackRepresentationCocoa.h */,
> 				526724F11CB2FDF60075974D /* TextTrackRepresentationCocoa.mm */,
> 				2D3EF4441917915C00034184 /* WebActionDisablingCALayerDelegate.h */,
>@@ -28146,6 +28161,8 @@
> 				26EA89A71B4F2B75008C5FD2 /* HashableActionList.h in Headers */,
> 				8482B7461198C35400BFB005 /* HashChangeEvent.h in Headers */,
> 				A8748BE012CBF2DC001FBA41 /* HashTools.h in Headers */,
>+				CDA595932146DEC300A84185 /* HEVCUtilities.h in Headers */,
>+				CDA595982146DF7800A84185 /* HEVCUtilitiesCocoa.h in Headers */,
> 				F55B3DC01251F12D003EF269 /* HiddenInputType.h in Headers */,
> 				515BE19C1D54F6C100DD7C68 /* HIDGamepad.h in Headers */,
> 				515BE19E1D54F6C100DD7C68 /* HIDGamepadProvider.h in Headers */,
>@@ -30261,6 +30278,7 @@
> 				517A534F1F54A8BA00DCDC0A /* ServiceWorkerRegistrationData.h in Headers */,
> 				517A53291F4B90B900DCDC0A /* ServiceWorkerRegistrationKey.h in Headers */,
> 				51F175691F3EBC8300C74950 /* ServiceWorkerRegistrationOptions.h in Headers */,
>+				CDC48AC92149CF2A0024FD59 /* MediaEngineConfigurationFactoryCocoa.h in Headers */,
> 				51BCCE301F8F179E006BA0ED /* ServiceWorkerThread.h in Headers */,
> 				4112B5431F9F9CA000E67875 /* ServiceWorkerThreadProxy.h in Headers */,
> 				515E37F61FAA940200D7F22A /* ServiceWorkerTypes.h in Headers */,
>diff --git a/Source/WebCore/platform/cocoa/VideoToolboxSoftLink.cpp b/Source/WebCore/platform/cocoa/VideoToolboxSoftLink.cpp
>index 23287aae3f3303c2ac3c5e64a82d9649ddb13810..987fbcf61966d24cf05ca084699d0580a2f111df 100644
>--- a/Source/WebCore/platform/cocoa/VideoToolboxSoftLink.cpp
>+++ b/Source/WebCore/platform/cocoa/VideoToolboxSoftLink.cpp
>@@ -45,6 +45,8 @@ SOFT_LINK_FUNCTION_FOR_SOURCE(WebCore, VideoToolbox, VTImageRotationSessionTrans
> SOFT_LINK_FUNCTION_MAY_FAIL_FOR_SOURCE(WebCore, VideoToolbox, VTIsHardwareDecodeSupported, Boolean, (CMVideoCodecType codecType), (codecType))
> SOFT_LINK_FUNCTION_MAY_FAIL_FOR_SOURCE(WebCore, VideoToolbox, VTGetGVADecoderAvailability, OSStatus, (uint32_t* totalInstanceCountOut, uint32_t* freeInstanceCountOut), (totalInstanceCountOut, freeInstanceCountOut))
> SOFT_LINK_FUNCTION_MAY_FAIL_FOR_SOURCE(WebCore, VideoToolbox, VTCreateCGImageFromCVPixelBuffer, OSStatus, (CVPixelBufferRef pixelBuffer, CFDictionaryRef options, CGImageRef* imageOut), (pixelBuffer, options, imageOut))
>+SOFT_LINK_FUNCTION_MAY_FAIL_FOR_SOURCE(WebCore, VideoToolbox, VTCopyHEVCDecoderCapabilitiesDictionary, CFDictionaryRef, (), ())
>+SOFT_LINK_FUNCTION_MAY_FAIL_FOR_SOURCE(WebCore, VideoToolbox, VTGetHEVCCapabilitesForFormatDescription, OSStatus, (CMVideoFormatDescriptionRef formatDescription, CFDictionaryRef decoderCapabilitiesDict, Boolean* isDecodable, Boolean* mayBePlayable), (formatDescription, decoderCapabilitiesDict, isDecodable, mayBePlayable))
> SOFT_LINK_CONSTANT_FOR_SOURCE(WebCore, VideoToolbox, kVTVideoDecoderSpecification_EnableHardwareAcceleratedVideoDecoder, CFStringRef)
> SOFT_LINK_CONSTANT_FOR_SOURCE(WebCore, VideoToolbox, kVTDecompressionPropertyKey_PixelBufferPool, CFStringRef)
> SOFT_LINK_CONSTANT_FOR_SOURCE(WebCore, VideoToolbox, kVTDecompressionPropertyKey_SuggestedQualityOfServiceTiers, CFStringRef)
>@@ -57,3 +59,9 @@ SOFT_LINK_FUNCTION_FOR_SOURCE(WebCore, VideoToolbox, VTPixelTransferSessionTrans
> SOFT_LINK_FUNCTION_FOR_SOURCE(WebCore, VideoToolbox, VTSessionSetProperty, OSStatus, (VTSessionRef session, CFStringRef propertyKey, CFTypeRef propertyValue), (session, propertyKey, propertyValue))
> SOFT_LINK_CONSTANT_FOR_SOURCE(WebCore, VideoToolbox, kVTPixelTransferPropertyKey_ScalingMode, CFStringRef)
> SOFT_LINK_CONSTANT_FOR_SOURCE(WebCore, VideoToolbox, kVTScalingMode_Trim, CFStringRef)
>+
>+SOFT_LINK_CONSTANT_MAY_FAIL_FOR_SOURCE(WebCore, VideoToolbox, kVTHEVCDecoderCapability_SupportedProfiles, CFStringRef)
>+SOFT_LINK_CONSTANT_MAY_FAIL_FOR_SOURCE(WebCore, VideoToolbox, kVTHEVCDecoderCapability_PerProfileSupport, CFStringRef)
>+SOFT_LINK_CONSTANT_MAY_FAIL_FOR_SOURCE(WebCore, VideoToolbox, kVTHEVCDecoderProfileCapability_IsHardwareAccelerated, CFStringRef)
>+SOFT_LINK_CONSTANT_MAY_FAIL_FOR_SOURCE(WebCore, VideoToolbox, kVTHEVCDecoderProfileCapability_MaxDecodeLevel, CFStringRef)
>+SOFT_LINK_CONSTANT_MAY_FAIL_FOR_SOURCE(WebCore, VideoToolbox, kVTHEVCDecoderProfileCapability_MaxPlaybackLevel, CFStringRef)
>diff --git a/Source/WebCore/platform/cocoa/VideoToolboxSoftLink.h b/Source/WebCore/platform/cocoa/VideoToolboxSoftLink.h
>index 7215d3aea34e742638db2f8b299ad77c788291de..f319b188ed160580947612eb37286de22324e25d 100644
>--- a/Source/WebCore/platform/cocoa/VideoToolboxSoftLink.h
>+++ b/Source/WebCore/platform/cocoa/VideoToolboxSoftLink.h
>@@ -57,6 +57,10 @@ SOFT_LINK_FUNCTION_MAY_FAIL_FOR_HEADER(WebCore, VideoToolbox, VTGetGVADecoderAva
> #define VTGetGVADecoderAvailability softLink_VideoToolbox_VTGetGVADecoderAvailability
> SOFT_LINK_FUNCTION_MAY_FAIL_FOR_HEADER(WebCore, VideoToolbox, VTCreateCGImageFromCVPixelBuffer, OSStatus, (CVPixelBufferRef pixelBuffer, CFDictionaryRef options, CGImageRef* imageOut), (pixelBuffer, options, imageOut))
> #define VTCreateCGImageFromCVPixelBuffer softLink_VideoToolbox_VTCreateCGImageFromCVPixelBuffer
>+SOFT_LINK_FUNCTION_MAY_FAIL_FOR_HEADER(WebCore, VideoToolbox, VTCopyHEVCDecoderCapabilitiesDictionary, CFDictionaryRef, (), ())
>+#define VTCopyHEVCDecoderCapabilitiesDictionary softLink_VideoToolbox_VTCopyHEVCDecoderCapabilitiesDictionary
>+SOFT_LINK_FUNCTION_MAY_FAIL_FOR_HEADER(WebCore, VideoToolbox, VTGetHEVCCapabilitesForFormatDescription, OSStatus, (CMVideoFormatDescriptionRef formatDescription, CFDictionaryRef decoderCapabilitiesDict, Boolean* isDecodable, Boolean* mayBePlayable), (formatDescription, decoderCapabilitiesDict, isDecodable, mayBePlayable))
>+#define VTGetHEVCCapabilitesForFormatDescription softLink_VideoToolbox_VTGetHEVCCapabilitesForFormatDescription
> SOFT_LINK_CONSTANT_FOR_HEADER(WebCore, VideoToolbox, kVTVideoDecoderSpecification_EnableHardwareAcceleratedVideoDecoder, CFStringRef)
> #define kVTVideoDecoderSpecification_EnableHardwareAcceleratedVideoDecoder get_VideoToolbox_kVTVideoDecoderSpecification_EnableHardwareAcceleratedVideoDecoder()
> SOFT_LINK_CONSTANT_FOR_HEADER(WebCore, VideoToolbox, kVTDecompressionPropertyKey_PixelBufferPool, CFStringRef)
>@@ -81,3 +85,14 @@ SOFT_LINK_CONSTANT_FOR_HEADER(WebCore, VideoToolbox, kVTPixelTransferPropertyKey
> #define kVTPixelTransferPropertyKey_ScalingMode get_VideoToolbox_kVTPixelTransferPropertyKey_ScalingMode()
> SOFT_LINK_CONSTANT_FOR_HEADER(WebCore, VideoToolbox, kVTScalingMode_Trim, CFStringRef)
> #define kVTScalingMode_Trim get_VideoToolbox_kVTScalingMode_Trim()
>+
>+SOFT_LINK_CONSTANT_MAY_FAIL_FOR_HEADER(WebCore, VideoToolbox, kVTHEVCDecoderCapability_SupportedProfiles, CFStringRef)
>+#define kVTHEVCDecoderCapability_SupportedProfiles get_VideoToolbox_kVTHEVCDecoderCapability_SupportedProfiles()
>+SOFT_LINK_CONSTANT_MAY_FAIL_FOR_HEADER(WebCore, VideoToolbox, kVTHEVCDecoderCapability_PerProfileSupport, CFStringRef)
>+#define kVTHEVCDecoderCapability_PerProfileSupport get_VideoToolbox_kVTHEVCDecoderCapability_PerProfileSupport()
>+SOFT_LINK_CONSTANT_MAY_FAIL_FOR_HEADER(WebCore, VideoToolbox, kVTHEVCDecoderProfileCapability_IsHardwareAccelerated, CFStringRef)
>+#define kVTHEVCDecoderProfileCapability_IsHardwareAccelerated get_VideoToolbox_kVTHEVCDecoderProfileCapability_IsHardwareAccelerated()
>+SOFT_LINK_CONSTANT_MAY_FAIL_FOR_HEADER(WebCore, VideoToolbox, kVTHEVCDecoderProfileCapability_MaxDecodeLevel, CFStringRef)
>+#define kVTHEVCDecoderProfileCapability_MaxDecodeLevel get_VideoToolbox_kVTHEVCDecoderProfileCapability_MaxDecodeLevel()
>+SOFT_LINK_CONSTANT_MAY_FAIL_FOR_HEADER(WebCore, VideoToolbox, kVTHEVCDecoderProfileCapability_MaxPlaybackLevel, CFStringRef)
>+#define kVTHEVCDecoderProfileCapability_MaxPlaybackLevel get_VideoToolbox_kVTHEVCDecoderProfileCapability_MaxPlaybackLevel()
>diff --git a/Source/WebCore/platform/graphics/HEVCUtilities.cpp b/Source/WebCore/platform/graphics/HEVCUtilities.cpp
>new file mode 100644
>index 0000000000000000000000000000000000000000..d17600c91bf706121e43ae7595b87fb1e56b9dad
>--- /dev/null
>+++ b/Source/WebCore/platform/graphics/HEVCUtilities.cpp
>@@ -0,0 +1,113 @@
>+/*
>+ * 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 "HEVCUtilities.h"
>+
>+#include <wtf/text/StringToIntegerConversion.h>
>+
>+namespace WebCore {
>+
>+std::optional<HEVCParameterSet> parseHEVCCodecParameters(const String& codecString)
>+{
>+    // The format of the 'hevc' codec string is specified in ISO/IEC 14496-15:2014, Annex E.3.
>+    StringView codecView(codecString);
>+    auto codecSplit = codecView.split('.');
>+    auto nextElement = codecSplit.begin();
>+    if (nextElement == codecSplit.end())
>+        return std::nullopt;
>+
>+    HEVCParameterSet parameters;
>+
>+    // Codec identifier: legal values are specified in ISO/IEC 14496-15:2014, section 8:
>+    parameters.codecName = (*nextElement).toString();
>+    if (!equal(parameters.codecName, "hvc1") && !equal(parameters.codecName, "hev1"))
>+        return std::nullopt;
>+
>+    if (++nextElement == codecSplit.end())
>+        return std::nullopt;
>+
>+    // First element: Optional General Profile Space parameter ['A', 'B', 'C'], mapping to [1, 2, 3]
>+    // and [0] for absent, then General Profile IDC as a 5-bit decimal number.
>+    auto profileSpace = *nextElement;
>+    if (!profileSpace.length())
>+        return std::nullopt;
>+
>+    auto firstCharacter = profileSpace[0];
>+    bool hasProfileSpace = firstCharacter >= 'A' && firstCharacter <= 'C';
>+    if (hasProfileSpace) {
>+        parameters.generalProfileSpace = 1 + (firstCharacter - 'A');
>+        profileSpace = profileSpace.substring(1);
>+    }
>+
>+    bool isValidProfileIDC = false;
>+    parameters.generalProfileIDC = toIntegralType<uint8_t>(profileSpace, &isValidProfileIDC);
>+    if (!isValidProfileIDC)
>+        return std::nullopt;
>+
>+    if (++nextElement == codecSplit.end())
>+        return std::nullopt;
>+
>+    // Second element: 32 bit of General Profile Compatibility Flags, in reverse bit order,
>+    // in hex with leading zeros omitted.
>+    auto compatibilityFlags = *nextElement;
>+    bool isValidCompatibilityFlags = false;
>+    parameters.generalProfileCompatibilityFlags = toIntegralType<uint32_t>(compatibilityFlags, &isValidCompatibilityFlags, 16);
>+    if (!isValidCompatibilityFlags)
>+        return std::nullopt;
>+
>+    if (++nextElement == codecSplit.end())
>+        return std::nullopt;
>+
>+    // Third element: General Tier Flag ['L', 'H'], mapping to [false, true], followed by
>+    // General Level IDC as a 8-bit decimal number.
>+    auto generalTier = *nextElement;
>+    firstCharacter = generalTier[0];
>+    if (firstCharacter != 'L' && firstCharacter != 'H')
>+        return std::nullopt;
>+
>+    parameters.generalTierFlag = firstCharacter == 'H';
>+    bool isValidGeneralLevelIDC = false;
>+    parameters.generalLevelIDC = toIntegralType<uint8_t>(generalTier.substring(1), &isValidGeneralLevelIDC);
>+    if (!isValidGeneralLevelIDC)
>+        return std::nullopt;
>+
>+    // Optional fourth and remaning elements: a sequence of 6 1-byte constraint flags, each byte encoded
>+    // in hex, and separated by a period, with trailing zero bytes omitted.
>+    parameters.constraintFlags.fill(0, 6);
>+    for (auto& flag : parameters.constraintFlags) {
>+        if (++nextElement == codecSplit.end())
>+            break;
>+
>+        bool isValidFlag = false;
>+        flag = toIntegralType<uint8_t>(*nextElement, &isValidFlag, 16);
>+        if (!isValidFlag)
>+            return std::nullopt;
>+    }
>+
>+    return WTFMove(parameters);
>+}
>+
>+}
>diff --git a/Source/WebCore/platform/graphics/HEVCUtilities.h b/Source/WebCore/platform/graphics/HEVCUtilities.h
>new file mode 100644
>index 0000000000000000000000000000000000000000..466d9ff0886fb27b5b642f9cefffde9f6dcf34ce
>--- /dev/null
>+++ b/Source/WebCore/platform/graphics/HEVCUtilities.h
>@@ -0,0 +1,45 @@
>+/*
>+ * 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.
>+ */
>+
>+#pragma once
>+
>+#include <wtf/Vector.h>
>+#include <wtf/text/WTFString.h>
>+
>+namespace WebCore {
>+
>+struct HEVCParameterSet {
>+    String codecName;
>+    unsigned short generalProfileSpace { 0 };
>+    unsigned short generalProfileIDC { 0 };
>+    uint32_t generalProfileCompatibilityFlags { 0 };
>+    bool generalTierFlag { false };
>+    unsigned short generalLevelIDC { 0 };
>+    Vector<unsigned short> constraintFlags { 6, 0 };
>+};
>+
>+WEBCORE_EXPORT std::optional<HEVCParameterSet> parseHEVCCodecParameters(const String& codecString);
>+
>+}
>diff --git a/Source/WebCore/platform/graphics/cocoa/HEVCUtilitiesCocoa.cpp b/Source/WebCore/platform/graphics/cocoa/HEVCUtilitiesCocoa.cpp
>new file mode 100644
>index 0000000000000000000000000000000000000000..f6719a8ec61206defa1da811b6e56238326d2bb1
>--- /dev/null
>+++ b/Source/WebCore/platform/graphics/cocoa/HEVCUtilitiesCocoa.cpp
>@@ -0,0 +1,101 @@
>+/*
>+ * 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 "HEVCUtilitiesCocoa.h"
>+
>+#if PLATFORM(COCOA)
>+
>+#include "HEVCUtilities.h"
>+#include "MediaCapabilitiesInfo.h"
>+
>+#include "VideoToolboxSoftLink.h"
>+
>+namespace WebCore {
>+
>+bool validateHEVCParameters(HEVCParameterSet& parameters, MediaCapabilitiesInfo& info)
>+{
>+    if (!canLoad_VideoToolbox_VTCopyHEVCDecoderCapabilitiesDictionary()
>+        || !canLoad_VideoToolbox_kVTHEVCDecoderCapability_SupportedProfiles()
>+        || !canLoad_VideoToolbox_kVTHEVCDecoderCapability_PerProfileSupport()
>+        || !canLoad_VideoToolbox_kVTHEVCDecoderProfileCapability_IsHardwareAccelerated()
>+        || !canLoad_VideoToolbox_kVTHEVCDecoderProfileCapability_MaxDecodeLevel()
>+        || !canLoad_VideoToolbox_kVTHEVCDecoderProfileCapability_MaxPlaybackLevel())
>+        return false;
>+
>+    RetainPtr<CFDictionaryRef> capabilities = adoptCF(VTCopyHEVCDecoderCapabilitiesDictionary());
>+    if (!capabilities)
>+        return false;
>+
>+    auto supportedProfiles = (CFArrayRef)CFDictionaryGetValue(capabilities.get(), kVTHEVCDecoderCapability_SupportedProfiles);
>+    if (!supportedProfiles || CFGetTypeID(supportedProfiles) != CFArrayGetTypeID())
>+        return false;
>+
>+    int16_t generalProfileIDC = parameters.generalProfileIDC;
>+    auto cfGeneralProfileIDC = adoptCF(CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt16Type, &generalProfileIDC));
>+    auto searchRange = CFRangeMake(0, CFArrayGetCount(supportedProfiles));
>+    if (!CFArrayContainsValue(supportedProfiles, searchRange, cfGeneralProfileIDC.get()))
>+        return false;
>+
>+    auto perProfileSupport = (CFDictionaryRef)CFDictionaryGetValue(capabilities.get(), kVTHEVCDecoderCapability_PerProfileSupport);
>+    if (!perProfileSupport || CFGetTypeID(perProfileSupport) != CFDictionaryGetTypeID())
>+        return false;
>+
>+    auto generalProfileIDCString = String::number(generalProfileIDC).createCFString();
>+    auto profileSupport = (CFDictionaryRef)CFDictionaryGetValue(perProfileSupport, generalProfileIDCString.get());
>+    if (!profileSupport || CFGetTypeID(profileSupport) != CFDictionaryGetTypeID())
>+        return false;
>+
>+    auto isHardwareAccelerated = (CFBooleanRef)CFDictionaryGetValue(profileSupport, kVTHEVCDecoderProfileCapability_IsHardwareAccelerated);
>+    if (isHardwareAccelerated && CFGetTypeID(isHardwareAccelerated) == CFBooleanGetTypeID())
>+        info.powerEfficient = CFBooleanGetValue(isHardwareAccelerated);
>+
>+    auto cfMaxDecodeLevel = (CFNumberRef)CFDictionaryGetValue(profileSupport, kVTHEVCDecoderProfileCapability_MaxDecodeLevel);
>+    if (cfMaxDecodeLevel && CFGetTypeID(cfMaxDecodeLevel) == CFNumberGetTypeID()) {
>+        int16_t maxDecodeLevel = 0;
>+        if (!CFNumberGetValue(cfMaxDecodeLevel, kCFNumberSInt16Type, &maxDecodeLevel))
>+            return false;
>+
>+        if (parameters.generalLevelIDC > maxDecodeLevel)
>+            return false;
>+
>+        info.supported = true;
>+    }
>+
>+    auto cfMaxPlaybackLevel = (CFNumberRef)CFDictionaryGetValue(profileSupport, kVTHEVCDecoderProfileCapability_MaxPlaybackLevel);
>+    if (cfMaxPlaybackLevel && CFGetTypeID(cfMaxPlaybackLevel) == CFNumberGetTypeID()) {
>+        int16_t maxPlaybackLevel = 0;
>+        if (!CFNumberGetValue(cfMaxPlaybackLevel, kCFNumberSInt16Type, &maxPlaybackLevel))
>+            return false;
>+
>+        info.smooth = parameters.generalLevelIDC <= maxPlaybackLevel;
>+    }
>+
>+    return true;
>+}
>+
>+}
>+
>+#endif // PLATFORM(COCOA)
>diff --git a/Source/WebCore/platform/graphics/cocoa/HEVCUtilitiesCocoa.h b/Source/WebCore/platform/graphics/cocoa/HEVCUtilitiesCocoa.h
>new file mode 100644
>index 0000000000000000000000000000000000000000..ec5f74295f51db27561d5d12a29b292303563d75
>--- /dev/null
>+++ b/Source/WebCore/platform/graphics/cocoa/HEVCUtilitiesCocoa.h
>@@ -0,0 +1,40 @@
>+/*
>+ * 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.
>+ */
>+
>+#pragma once
>+
>+#if PLATFORM(COCOA)
>+
>+#include "HEVCUtilities.h"
>+
>+namespace WebCore {
>+
>+struct MediaCapabilitiesInfo;
>+
>+extern bool validateHEVCParameters(HEVCParameterSet&, MediaCapabilitiesInfo&);
>+
>+}
>+
>+#endif
>diff --git a/Source/WebCore/platform/graphics/cocoa/MediaEngineConfigurationFactoryCocoa.cpp b/Source/WebCore/platform/graphics/cocoa/MediaEngineConfigurationFactoryCocoa.cpp
>new file mode 100644
>index 0000000000000000000000000000000000000000..685573a1fcaaed22ee61ce94dc583349367323b4
>--- /dev/null
>+++ b/Source/WebCore/platform/graphics/cocoa/MediaEngineConfigurationFactoryCocoa.cpp
>@@ -0,0 +1,104 @@
>+/*
>+ * 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 "MediaEngineConfigurationFactoryCocoa.h"
>+
>+#if PLATFORM(COCOA)
>+
>+#include "HEVCUtilitiesCocoa.h"
>+#include "MediaCapabilitiesInfo.h"
>+#include "MediaDecodingConfiguration.h"
>+#include "MediaPlayer.h"
>+
>+#include "VideoToolboxSoftLink.h"
>+
>+namespace WebCore {
>+
>+static CMVideoCodecType videoCodecTypeFromRFC4281Type(String type)
>+{
>+    if (type.startsWith("mp4v"))
>+        return kCMVideoCodecType_MPEG4Video;
>+    if (type.startsWith("avc1") || type.startsWith("avc3"))
>+        return kCMVideoCodecType_H264;
>+    if (type.startsWith("hvc1") || type.startsWith("hev1"))
>+        return kCMVideoCodecType_HEVC;
>+    return 0;
>+}
>+
>+void createMediaPlayerDecodingConfigurationCocoa(MediaDecodingConfiguration& configuration, WTF::Function<void(MediaCapabilitiesInfo&&)>&& callback)
>+{
>+    MediaCapabilitiesInfo info;
>+    if (configuration.video) {
>+        auto& videoConfiguration = configuration.video.value();
>+        MediaEngineSupportParameters parameters { };
>+        parameters.type = ContentType(videoConfiguration.contentType);
>+        parameters.isMediaSource = configuration.type == MediaDecodingType::MediaSource;
>+        if (MediaPlayer::supportsType(parameters) != MediaPlayer::IsSupported) {
>+            callback({ });
>+            return;
>+        }
>+        info.supported = true;
>+
>+        auto codecs = parameters.type.codecs();
>+        if (codecs.size() != 1) {
>+            callback({ });
>+            return;
>+        }
>+
>+        info.supported = true;
>+        auto& codec = codecs[0];
>+        auto videoCodecType = videoCodecTypeFromRFC4281Type(codec);
>+        if (!videoCodecType) {
>+            callback({ });
>+            return;
>+        }
>+
>+        if (videoCodecType == kCMVideoCodecType_HEVC) {
>+            auto parameters = parseHEVCCodecParameters(codec);
>+            if (!parameters || !validateHEVCParameters(parameters.value(), info)) {
>+                callback({ });
>+                return;
>+            }
>+        } else if (canLoad_VideoToolbox_VTIsHardwareDecodeSupported())
>+            info.powerEfficient = VTIsHardwareDecodeSupported(videoCodecType);
>+    }
>+
>+    if (configuration.audio) {
>+        MediaEngineSupportParameters parameters { };
>+        parameters.type = ContentType(configuration.audio.value().contentType);
>+        parameters.isMediaSource = configuration.type == MediaDecodingType::MediaSource;
>+        if (MediaPlayer::supportsType(parameters) != MediaPlayer::IsSupported) {
>+            callback({ });
>+            return;
>+        }
>+        info.supported = true;
>+    }
>+
>+    callback(WTFMove(info));
>+}
>+
>+}
>+#endif
>diff --git a/Source/WebCore/platform/graphics/cocoa/MediaEngineConfigurationFactoryCocoa.h b/Source/WebCore/platform/graphics/cocoa/MediaEngineConfigurationFactoryCocoa.h
>new file mode 100644
>index 0000000000000000000000000000000000000000..362b6b620d7b5643b01ed9fb8604929ccc6adf0f
>--- /dev/null
>+++ b/Source/WebCore/platform/graphics/cocoa/MediaEngineConfigurationFactoryCocoa.h
>@@ -0,0 +1,39 @@
>+/*
>+ * 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.
>+ */
>+
>+#pragma once
>+
>+#if PLATFORM(COCOA)
>+
>+namespace WebCore {
>+
>+struct MediaCapabilitiesInfo;
>+struct MediaDecodingConfiguration;
>+
>+extern void createMediaPlayerDecodingConfigurationCocoa(MediaDecodingConfiguration&, WTF::Function<void(MediaCapabilitiesInfo&&)>&&);
>+
>+}
>+
>+#endif
>diff --git a/Source/WebCore/platform/mediacapabilities/MediaEngineConfigurationFactory.cpp b/Source/WebCore/platform/mediacapabilities/MediaEngineConfigurationFactory.cpp
>index c0a1c0d9e4045c88bf77b8f731e2d529baa2e6c4..329e294ca2f6019aca49f39a61178dd526691661 100644
>--- a/Source/WebCore/platform/mediacapabilities/MediaEngineConfigurationFactory.cpp
>+++ b/Source/WebCore/platform/mediacapabilities/MediaEngineConfigurationFactory.cpp
>@@ -35,6 +35,10 @@
> #include <wtf/NeverDestroyed.h>
> #include <wtf/Vector.h>
> 
>+#if PLATFORM(COCOA)
>+#include "MediaEngineConfigurationFactoryCocoa.h"
>+#endif
>+
> namespace WebCore {
> 
> static bool& mockEnabled()
>@@ -51,7 +55,11 @@ struct MediaEngineFactory {
> using FactoryVector = Vector<MediaEngineFactory>;
> static const FactoryVector& factories()
> {
>-    static NeverDestroyed<FactoryVector> factories = makeNeverDestroyed(FactoryVector({ }));
>+    static NeverDestroyed<FactoryVector> factories = makeNeverDestroyed(FactoryVector({
>+#if PLATFORM(COCOA)
>+        { &createMediaPlayerDecodingConfigurationCocoa, nullptr },
>+#endif
>+    }));
>     return factories;
> }
> 
>@@ -69,6 +77,11 @@ void MediaEngineConfigurationFactory::createDecodingConfiguration(MediaDecodingC
>         }
> 
>         auto& factory = *nextFactory;
>+        if (!factory.createDecodingConfiguration) {
>+            callback({ });
>+            return;
>+        }
>+
>         factory.createDecodingConfiguration(config, [factoryCallback, nextFactory, config, callback = WTFMove(callback)] (auto&& info) mutable {
>             if (info.supported) {
>                 callback(WTFMove(info));
>@@ -95,6 +108,11 @@ void MediaEngineConfigurationFactory::createEncodingConfiguration(MediaEncodingC
>         }
> 
>         auto& factory = *nextFactory;
>+        if (!factory.createEncodingConfiguration) {
>+            callback({ });
>+            return;
>+        }
>+
>         factory.createEncodingConfiguration(config, [factoryCallback, nextFactory, config, callback = WTFMove(callback)] (auto&& info) mutable {
>             if (info.supported) {
>                 callback(WTFMove(info));
>diff --git a/Source/WebCore/testing/Internals.cpp b/Source/WebCore/testing/Internals.cpp
>index ec2e733d28154f7de6ecd0a3f1b3ae8cb529b96f..92f468e7a829e00828bab10252b65788625b3d2d 100644
>--- a/Source/WebCore/testing/Internals.cpp
>+++ b/Source/WebCore/testing/Internals.cpp
>@@ -74,6 +74,7 @@
> #include "FrameView.h"
> #include "GCObservation.h"
> #include "GridPosition.h"
>+#include "HEVCUtilities.h"
> #include "HTMLAnchorElement.h"
> #include "HTMLCanvasElement.h"
> #include "HTMLIFrameElement.h"
>@@ -4724,4 +4725,9 @@ unsigned Internals::primaryScreenDisplayID()
> #endif
> }
> 
>+std::optional<HEVCParameterSet> Internals::parseHEVCCodecParameters(const String& codecString)
>+{
>+    return WebCore::parseHEVCCodecParameters(codecString);
>+}
>+
> } // namespace WebCore
>diff --git a/Source/WebCore/testing/Internals.h b/Source/WebCore/testing/Internals.h
>index 9564d274e00ee7479199d200ebed3dbef1ae6087..65aeef308a8fc7da4e777edb393bbea5f17d0c8b 100644
>--- a/Source/WebCore/testing/Internals.h
>+++ b/Source/WebCore/testing/Internals.h
>@@ -29,6 +29,7 @@
> #include "CSSComputedStyleDeclaration.h"
> #include "ContextDestructionObserver.h"
> #include "ExceptionOr.h"
>+#include "HEVCUtilities.h"
> #include "JSDOMPromiseDeferred.h"
> #include "OrientationNotifier.h"
> #include "PageConsoleClient.h"
>@@ -736,6 +737,9 @@ public:
> 
>     unsigned primaryScreenDisplayID();
>         
>+    using HEVCParameterSet = WebCore::HEVCParameterSet;
>+    std::optional<HEVCParameterSet> parseHEVCCodecParameters(const String& codecString);
>+
> private:
>     explicit Internals(Document&);
>     Document* contextDocument() const;
>diff --git a/Source/WebCore/testing/Internals.idl b/Source/WebCore/testing/Internals.idl
>index 2184fd21dd1ac188dbf041885805c873e1b61f8f..d78e118d899369e19df6137c0ea2a71f6e981322 100644
>--- a/Source/WebCore/testing/Internals.idl
>+++ b/Source/WebCore/testing/Internals.idl
>@@ -122,6 +122,19 @@ enum CompositingPolicy {
>     double right;
> };
> 
>+[
>+    ExportMacro=WEBCORE_TESTSUPPORT_EXPORT,
>+    JSGenerateToJSObject,
>+] dictionary HEVCParameterSet {
>+    DOMString codecName;
>+    unsigned short generalProfileSpace;
>+    unsigned short generalProfileIDC;
>+    unsigned long generalProfileCompatibilityFlags;
>+    boolean generalTierFlag;
>+    unsigned short generalLevelIDC;
>+    sequence<unsigned short> constraintFlags;
>+};
>+
> [
>     ExportMacro=WEBCORE_TESTSUPPORT_EXPORT,
>     NoInterfaceObject,
>@@ -670,4 +683,6 @@ enum CompositingPolicy {
>     void notifyResourceLoadObserver();
> 
>     unsigned long primaryScreenDisplayID();
>+
>+    HEVCParameterSet? parseHEVCCodecParameters(DOMString codecParameters);
> };
>diff --git a/LayoutTests/ChangeLog b/LayoutTests/ChangeLog
>index 6e5c96fe2913c9632804769194aa3d968edb4b60..cb95957eca066f943080b2fb0e0a52453f5865eb 100644
>--- a/LayoutTests/ChangeLog
>+++ b/LayoutTests/ChangeLog
>@@ -1,3 +1,13 @@
>+2018-09-12  Jer Noble  <jer.noble@apple.com>
>+
>+        Add support for HEVC codec types in Media Capabilities
>+        https://bugs.webkit.org/show_bug.cgi?id=189565
>+
>+        Reviewed by NOBODY (OOPS!).
>+
>+        * media/hevc-codec-parameters-expected.txt: Added.
>+        * media/hevc-codec-parameters.html: Added.
>+
> 2018-09-14  Jer Noble  <jer.noble@apple.com>
> 
>         Refactoring: eliminate raw pointer usage in Fullscreen code
>diff --git a/LayoutTests/media/hevc-codec-parameters-expected.txt b/LayoutTests/media/hevc-codec-parameters-expected.txt
>new file mode 100644
>index 0000000000000000000000000000000000000000..f6def5859a9e4f8fc7d4c8727fb317936ffd1eae
>--- /dev/null
>+++ b/LayoutTests/media/hevc-codec-parameters-expected.txt
>@@ -0,0 +1,9 @@
>+EXPECTED (internals.parseHEVCCodecParameters("bad-parameter") == 'null') OK
>+EXPECTED (internals.parseHEVCCodecParameters("hvc1") == 'null') OK
>+EXPECTED (internals.parseHEVCCodecParameters("hev1.1.6.L93") === '{ 0, 1, 6, false, 93 }') OK
>+EXPECTED (internals.parseHEVCCodecParameters("hev1.A4.41.H120") === '{ 1, 4, 65, true, 120 }') OK
>+EXPECTED (internals.parseHEVCCodecParameters("hev1.B1.4.L63") === '{ 2, 1, 4, false, 63 }') OK
>+EXPECTED (internals.parseHEVCCodecParameters("hev1.D1.4.L63") == 'null') OK
>+EXPECTED (internals.parseHEVCCodecParameters("hev1.B1.4.L68000") == 'null') OK
>+END OF TEST
>+
>diff --git a/LayoutTests/media/hevc-codec-parameters.html b/LayoutTests/media/hevc-codec-parameters.html
>new file mode 100644
>index 0000000000000000000000000000000000000000..1ddcd9cf9c711017969ee02070ac08b64772c7e6
>--- /dev/null
>+++ b/LayoutTests/media/hevc-codec-parameters.html
>@@ -0,0 +1,46 @@
>+<!DOCTYPE html>
>+<html>
>+<head>
>+    <script src="video-test.js"></script>
>+    <script>
>+    function HEVCParameterSetToString(set) {
>+        return `{ ${set.generalProfileSpace }, ${set.generalProfileIDC }, ${set.generalProfileCompatibilityFlags }, ${set.generalTierFlag }, ${set.generalLevelIDC } }`;
>+    }
>+    function isEqualHEVCParameterSet(setA, setB) {
>+        return setA.generalProfileSpace === setB.generalProfileSpace
>+            && setA.generalProfileIDC === setB.generalProfileIDC
>+            && setA.generalProfileCompatibilityFlags === setB.generalProfileCompatibilityFlags
>+            && setA.generalTierFlag === setB.generalTierFlag
>+            && setA.generalLevelIDC === setB.generalLevelIDC
>+    }
>+    function makeHEVCParameterSet(generalProfileSpace, generalProfileIDC, generalProfileCompatibilityFlags, generalTierFlag, generalLevelIDC)
>+    {
>+        return {
>+            generalProfileSpace: generalProfileSpace,
>+            generalProfileIDC: generalProfileIDC,
>+            generalProfileCompatibilityFlags: generalProfileCompatibilityFlags,
>+            generalTierFlag: generalTierFlag,
>+            generalLevelIDC: generalLevelIDC,
>+        };
>+    }
>+    function testExpectedHEVCParameterSet(testFuncString, expected)
>+    {
>+        let observed = eval(testFuncString);
>+        let success = isEqualHEVCParameterSet(observed, expected);
>+        reportExpected(success, testFuncString, '===', HEVCParameterSetToString(expected), HEVCParameterSetToString(observed));
>+    }
>+    window.addEventListener('load', event => {
>+        testExpected('internals.parseHEVCCodecParameters("bad-parameter")', null);
>+        testExpected('internals.parseHEVCCodecParameters("hvc1")', null);
>+        testExpectedHEVCParameterSet('internals.parseHEVCCodecParameters("hev1.1.6.L93")', makeHEVCParameterSet(0, 1, 6, false, 93));
>+        testExpectedHEVCParameterSet('internals.parseHEVCCodecParameters("hev1.A4.41.H120")', makeHEVCParameterSet(1, 4, 65, true, 120));
>+        testExpectedHEVCParameterSet('internals.parseHEVCCodecParameters("hev1.B1.4.L63")', makeHEVCParameterSet(2, 1, 4, false, 63));
>+        testExpected('internals.parseHEVCCodecParameters("hev1.D1.4.L63")', null);
>+        testExpected('internals.parseHEVCCodecParameters("hev1.B1.4.L68000")', null);
>+        endTest();
>+    }, { once: true });
>+    </script>
>+</head>
>+<body>
>+</body>
>+</html>

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Attachments on bug 189565: 349595 | 349596 | 349610 | 349616 | 349908 | 349910 | 349912 | 349921 | 349922