Title: [253455] trunk/Source/WebCore
Revision
253455
Author
jer.no...@apple.com
Date
2019-12-12 16:48:03 -0800 (Thu, 12 Dec 2019)

Log Message

Add logging for MediaCapabilities.decodeInfo()
https://bugs.webkit.org/show_bug.cgi?id=205172

Reviewed by Eric Carlson.

Add logging for decodingInfo() that can emit string versions of both the input
MediaConfiguration and the output MediaCapabilitiesInfo objects.

* Modules/mediacapabilities/MediaCapabilities.cpp:
(WebCore::MediaCapabilities::decodingInfo):
* Sources.txt:
* WebCore.xcodeproj/project.pbxproj:
* platform/mediacapabilities/MediaCapabilitiesLogging.cpp: Added.
(WebCore::toJSONObject):
(WebCore::toJSONString):
(WTF::LogArgument<WebCore::VideoConfiguration>::toString):
(WTF::LogArgument<WebCore::AudioConfiguration>::toString):
(WTF::LogArgument<WebCore::MediaConfiguration>::toString):
(WTF::LogArgument<WebCore::MediaDecodingConfiguration>::toString):
(WTF::LogArgument<WebCore::MediaEncodingConfiguration>::toString):
(WTF::LogArgument<WebCore::MediaCapabilitiesInfo>::toString):
(WTF::LogArgument<WebCore::MediaCapabilitiesDecodingInfo>::toString):
(WTF::LogArgument<WebCore::MediaCapabilitiesEncodingInfo>::toString):
(WTF::LogArgument<WebCore::ColorGamut>::toString):
(WTF::LogArgument<WebCore::HdrMetadataType>::toString):
(WTF::LogArgument<WebCore::TransferFunction>::toString):
(WTF::LogArgument<WebCore::MediaDecodingType>::toString):
(WTF::LogArgument<WebCore::MediaEncodingType>::toString):
* platform/mediacapabilities/MediaCapabilitiesLogging.h: Added.

Modified Paths

Added Paths

Diff

Modified: trunk/Source/WebCore/ChangeLog (253454 => 253455)


--- trunk/Source/WebCore/ChangeLog	2019-12-13 00:26:20 UTC (rev 253454)
+++ trunk/Source/WebCore/ChangeLog	2019-12-13 00:48:03 UTC (rev 253455)
@@ -1,3 +1,35 @@
+2019-12-12  Jer Noble  <jer.no...@apple.com>
+
+        Add logging for MediaCapabilities.decodeInfo()
+        https://bugs.webkit.org/show_bug.cgi?id=205172
+
+        Reviewed by Eric Carlson.
+
+        Add logging for decodingInfo() that can emit string versions of both the input
+        MediaConfiguration and the output MediaCapabilitiesInfo objects.
+
+        * Modules/mediacapabilities/MediaCapabilities.cpp:
+        (WebCore::MediaCapabilities::decodingInfo):
+        * Sources.txt:
+        * WebCore.xcodeproj/project.pbxproj:
+        * platform/mediacapabilities/MediaCapabilitiesLogging.cpp: Added.
+        (WebCore::toJSONObject):
+        (WebCore::toJSONString):
+        (WTF::LogArgument<WebCore::VideoConfiguration>::toString):
+        (WTF::LogArgument<WebCore::AudioConfiguration>::toString):
+        (WTF::LogArgument<WebCore::MediaConfiguration>::toString):
+        (WTF::LogArgument<WebCore::MediaDecodingConfiguration>::toString):
+        (WTF::LogArgument<WebCore::MediaEncodingConfiguration>::toString):
+        (WTF::LogArgument<WebCore::MediaCapabilitiesInfo>::toString):
+        (WTF::LogArgument<WebCore::MediaCapabilitiesDecodingInfo>::toString):
+        (WTF::LogArgument<WebCore::MediaCapabilitiesEncodingInfo>::toString):
+        (WTF::LogArgument<WebCore::ColorGamut>::toString):
+        (WTF::LogArgument<WebCore::HdrMetadataType>::toString):
+        (WTF::LogArgument<WebCore::TransferFunction>::toString):
+        (WTF::LogArgument<WebCore::MediaDecodingType>::toString):
+        (WTF::LogArgument<WebCore::MediaEncodingType>::toString):
+        * platform/mediacapabilities/MediaCapabilitiesLogging.h: Added.
+
 2019-12-12  David Kilzer  <ddkil...@apple.com>
 
         REGRESSION (r172814): Don't export inline SQLiteDatabase::disableThreadingChecks() method

Modified: trunk/Source/WebCore/Modules/mediacapabilities/MediaCapabilities.cpp (253454 => 253455)


--- trunk/Source/WebCore/Modules/mediacapabilities/MediaCapabilities.cpp	2019-12-13 00:26:20 UTC (rev 253454)
+++ trunk/Source/WebCore/Modules/mediacapabilities/MediaCapabilities.cpp	2019-12-13 00:48:03 UTC (rev 253455)
@@ -31,13 +31,16 @@
 #include "JSDOMPromiseDeferred.h"
 #include "JSMediaCapabilitiesDecodingInfo.h"
 #include "JSMediaCapabilitiesEncodingInfo.h"
+#include "Logging.h"
 #include "MediaCapabilitiesDecodingInfo.h"
 #include "MediaCapabilitiesEncodingInfo.h"
+#include "MediaCapabilitiesLogging.h"
 #include "MediaDecodingConfiguration.h"
 #include "MediaEncodingConfiguration.h"
 #include "MediaEngineConfigurationFactory.h"
 #include "Settings.h"
 #include <wtf/HashSet.h>
+#include <wtf/Logger.h>
 
 namespace WebCore {
 
@@ -167,10 +170,16 @@
     // 2.4 Media Capabilities Interface
     // https://wicg.github.io/media-capabilities/#media-capabilities-interface
 
+    auto identifier = WTF::Logger::LogSiteIdentifier("MediaCapabilities", __func__, this);
+    Ref<Logger> logger = document.logger();
+
     // 1. If configuration is not a valid MediaConfiguration, return a Promise rejected with a TypeError.
     // 2. If configuration.video is present and is not a valid video configuration, return a Promise rejected with a TypeError.
     // 3. If configuration.audio is present and is not a valid audio configuration, return a Promise rejected with a TypeError.
     if (!isValidMediaConfiguration(configuration)) {
+#if !RELEASE_LOG_DISABLED
+        logger->info(LogMedia, identifier, " - Rejected. configuration: ", configuration);
+#endif
         promise->reject(TypeError);
         return;
     }
@@ -181,10 +190,10 @@
     // 4. Let p be a new promise.
     // 5. In parallel, run the create a MediaCapabilitiesInfo algorithm with configuration and resolve p with its result.
     // 6. Return p.
-    m_taskQueue.enqueueTask([configuration = WTFMove(configuration), promise = WTFMove(promise)] () mutable {
+    m_taskQueue.enqueueTask([configuration = WTFMove(configuration), promise = WTFMove(promise), logger = WTFMove(logger), identifier = WTFMove(identifier)] () mutable {
 
         // 2.2.3 If configuration is of type MediaDecodingConfiguration, run the following substeps:
-        MediaEngineConfigurationFactory::DecodingConfigurationCallback callback = [promise = WTFMove(promise)] (auto info) mutable {
+        MediaEngineConfigurationFactory::DecodingConfigurationCallback callback = [promise = WTFMove(promise), logger = WTFMove(logger), identifier = WTFMove(identifier)] (auto info) mutable {
             // 2.2.3.1. If the user agent is able to decode the media represented by
             // configuration, set supported to true. Otherwise set it to false.
             // 2.2.3.2. If the user agent is able to decode the media represented by
@@ -196,6 +205,9 @@
             // consideration the current power source in order to determine the
             // decoding power efficiency unless the device’s power source has side
             // effects such as enabling different decoding modules.
+#if !RELEASE_LOG_DISABLED
+            logger->info(LogMedia, identifier, "::callback() - Resolved. info: ", info);
+#endif
             promise->resolve<IDLDictionary<MediaCapabilitiesDecodingInfo>>(WTFMove(info));
         };
 

Modified: trunk/Source/WebCore/Sources.txt (253454 => 253455)


--- trunk/Source/WebCore/Sources.txt	2019-12-13 00:26:20 UTC (rev 253454)
+++ trunk/Source/WebCore/Sources.txt	2019-12-13 00:48:03 UTC (rev 253455)
@@ -1958,6 +1958,7 @@
 platform/graphics/transforms/TranslateTransformOperation.cpp
 
 platform/mediacapabilities/MediaEngineConfigurationFactory.cpp
+platform/mediacapabilities/MediaCapabilitiesLogging.cpp
 
 platform/mediarecorder/MediaRecorderPrivateMock.cpp
 

Modified: trunk/Source/WebCore/WebCore.xcodeproj/project.pbxproj (253454 => 253455)


--- trunk/Source/WebCore/WebCore.xcodeproj/project.pbxproj	2019-12-13 00:26:20 UTC (rev 253454)
+++ trunk/Source/WebCore/WebCore.xcodeproj/project.pbxproj	2019-12-13 00:48:03 UTC (rev 253455)
@@ -13718,6 +13718,8 @@
 		CD2F4A2218D89F700063746D /* AudioHardwareListener.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = AudioHardwareListener.h; sourceTree = "<group>"; };
 		CD2F4A2518D8A3490063746D /* AudioHardwareListenerMac.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = AudioHardwareListenerMac.cpp; sourceTree = "<group>"; };
 		CD2F4A2618D8A3490063746D /* AudioHardwareListenerMac.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = AudioHardwareListenerMac.h; sourceTree = "<group>"; };
+		CD30B28623A173AA00D7488B /* MediaCapabilitiesLogging.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; name = MediaCapabilitiesLogging.h; path = mediacapabilities/MediaCapabilitiesLogging.h; sourceTree = "<group>"; };
+		CD30B28723A173AA00D7488B /* MediaCapabilitiesLogging.cpp */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.cpp.cpp; name = MediaCapabilitiesLogging.cpp; path = mediacapabilities/MediaCapabilitiesLogging.cpp; sourceTree = "<group>"; };
 		CD318620199F1E2A0030A0F7 /* CDMPrivateMediaSourceAVFObjC.mm */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.objcpp; path = CDMPrivateMediaSourceAVFObjC.mm; sourceTree = "<group>"; };
 		CD318621199F1E2A0030A0F7 /* CDMPrivateMediaSourceAVFObjC.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = CDMPrivateMediaSourceAVFObjC.h; sourceTree = "<group>"; };
 		CD32A189184EB46A0029B1BB /* mediaControlsiOS.js */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode._javascript_; path = mediaControlsiOS.js; sourceTree = "<group>"; };
@@ -22642,6 +22644,8 @@
 				CDCC9BCE22387E9A00FFB51C /* MediaCapabilitiesDecodingInfo.h */,
 				CDCC9BD022387EAA00FFB51C /* MediaCapabilitiesEncodingInfo.h */,
 				CD0C8B582141C8CA0062F59D /* MediaCapabilitiesInfo.h */,
+				CD30B28723A173AA00D7488B /* MediaCapabilitiesLogging.cpp */,
+				CD30B28623A173AA00D7488B /* MediaCapabilitiesLogging.h */,
 				CDBD3D351FE85CBF0012C545 /* MediaConfiguration.h */,
 				CDBD3D361FE85CC00012C545 /* MediaDecodingConfiguration.h */,
 				CDBD3D381FE85CC00012C545 /* MediaDecodingType.h */,

Added: trunk/Source/WebCore/platform/mediacapabilities/MediaCapabilitiesLogging.cpp (0 => 253455)


--- trunk/Source/WebCore/platform/mediacapabilities/MediaCapabilitiesLogging.cpp	                        (rev 0)
+++ trunk/Source/WebCore/platform/mediacapabilities/MediaCapabilitiesLogging.cpp	2019-12-13 00:48:03 UTC (rev 253455)
@@ -0,0 +1,231 @@
+/*
+ * Copyright (C) 2019 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 "MediaCapabilitiesLogging.h"
+
+#include "AudioConfiguration.h"
+#include "JSColorGamut.h"
+#include "JSHdrMetadataType.h"
+#include "JSMediaDecodingType.h"
+#include "JSMediaEncodingType.h"
+#include "JSTransferFunction.h"
+#include "MediaCapabilitiesDecodingInfo.h"
+#include "MediaCapabilitiesEncodingInfo.h"
+#include "MediaDecodingConfiguration.h"
+#include "MediaDecodingType.h"
+#include "MediaEncodingConfiguration.h"
+#include "MediaEncodingType.h"
+#include "VideoConfiguration.h"
+#include <wtf/JSONValues.h>
+
+namespace WebCore {
+
+static Ref<JSON::Object> toJSONObject(const VideoConfiguration& configuration)
+{
+    auto object = JSON::Object::create();
+    object->setString("contentType"_s, configuration.contentType);
+    object->setInteger("width"_s, configuration.width);
+    object->setInteger("height"_s, configuration.height);
+    object->setInteger("bitrate"_s, configuration.bitrate);
+    object->setDouble("framerate"_s, configuration.framerate);
+    if (configuration.alphaChannel)
+        object->setBoolean("alphaChannel"_s, configuration.alphaChannel.value());
+    if (configuration.colorGamut)
+        object->setString("colorGamut"_s, convertEnumerationToString(configuration.colorGamut.value()));
+    if (configuration.hdrMetadataType)
+        object->setString("hdrMetadataType"_s, convertEnumerationToString(configuration.hdrMetadataType.value()));
+    if (configuration.transferFunction)
+        object->setString("transferFunction"_s, convertEnumerationToString(configuration.transferFunction.value()));
+    return object;
+}
+
+static Ref<JSON::Object> toJSONObject(const AudioConfiguration& configuration)
+{
+    auto object = JSON::Object::create();
+    object->setString("contentType"_s, configuration.contentType);
+    object->setString("channels"_s, configuration.channels);
+    object->setInteger("bitrate"_s, configuration.bitrate);
+    object->setDouble("samplerate"_s, configuration.samplerate);
+    return object;
+}
+
+static Ref<JSON::Object> toJSONObject(const MediaConfiguration& configuration)
+{
+    auto object = JSON::Object::create();
+    if (configuration.video)
+        object->setValue("video"_s, toJSONObject(configuration.video.value()));
+    if (configuration.audio)
+        object->setValue("audio"_s, toJSONObject(configuration.audio.value()));
+    return object;
+}
+
+static Ref<JSON::Object> toJSONObject(const MediaDecodingConfiguration& configuration)
+{
+    auto object = toJSONObject(static_cast<const MediaConfiguration&>(configuration));
+    object->setString("type"_s, convertEnumerationToString(configuration.type));
+    return object;
+}
+
+static Ref<JSON::Object> toJSONObject(const MediaEncodingConfiguration& configuration)
+{
+    auto object = toJSONObject(static_cast<const MediaConfiguration&>(configuration));
+    object->setString("type"_s, convertEnumerationToString(configuration.type));
+    return object;
+}
+
+static Ref<JSON::Object> toJSONObject(const MediaCapabilitiesInfo& info)
+{
+    auto object = JSON::Object::create();
+    object->setBoolean("supported"_s, info.supported);
+    object->setBoolean("smooth"_s, info.smooth);
+    object->setBoolean("powerEfficient"_s, info.powerEfficient);
+    return object;
+}
+
+static Ref<JSON::Object> toJSONObject(const MediaCapabilitiesDecodingInfo& info)
+{
+    auto object = toJSONObject(static_cast<const MediaCapabilitiesInfo&>(info));
+    object->setValue("supportedConfiguration"_s, toJSONObject(info.supportedConfiguration));
+    return object;
+}
+
+static Ref<JSON::Object> toJSONObject(const MediaCapabilitiesEncodingInfo& info)
+{
+    auto object = toJSONObject(static_cast<const MediaCapabilitiesInfo&>(info));
+    object->setValue("supportedConfiguration"_s, toJSONObject(info.supportedConfiguration));
+    return object;
+}
+
+static String toJSONString(const VideoConfiguration& configuration)
+{
+    return toJSONObject(configuration)->toJSONString();
+}
+
+static String toJSONString(const AudioConfiguration& configuration)
+{
+    return toJSONObject(configuration)->toJSONString();
+}
+
+static String toJSONString(const MediaConfiguration& configuration)
+{
+    return toJSONObject(configuration)->toJSONString();
+}
+
+static String toJSONString(const MediaDecodingConfiguration& configuration)
+{
+    return toJSONObject(configuration)->toJSONString();
+}
+
+static String toJSONString(const MediaEncodingConfiguration& configuration)
+{
+    return toJSONObject(configuration)->toJSONString();
+}
+
+static String toJSONString(const MediaCapabilitiesInfo& info)
+{
+    return toJSONObject(info)->toJSONString();
+}
+
+static String toJSONString(const MediaCapabilitiesDecodingInfo& info)
+{
+    return toJSONObject(info)->toJSONString();
+}
+
+static String toJSONString(const MediaCapabilitiesEncodingInfo& info)
+{
+    return toJSONObject(info)->toJSONString();
+}
+
+}
+
+namespace WTF {
+
+String LogArgument<WebCore::VideoConfiguration>::toString(const WebCore::VideoConfiguration& configuration)
+{
+    return toJSONString(configuration);
+}
+
+String LogArgument<WebCore::AudioConfiguration>::toString(const WebCore::AudioConfiguration& configuration)
+{
+    return toJSONString(configuration);
+}
+
+String LogArgument<WebCore::MediaConfiguration>::toString(const WebCore::MediaConfiguration& configuration)
+{
+    return toJSONString(configuration);
+}
+
+String LogArgument<WebCore::MediaDecodingConfiguration>::toString(const WebCore::MediaDecodingConfiguration& configuration)
+{
+    return toJSONString(configuration);
+}
+
+String LogArgument<WebCore::MediaEncodingConfiguration>::toString(const WebCore::MediaEncodingConfiguration& configuration)
+{
+    return toJSONString(configuration);
+}
+
+String LogArgument<WebCore::MediaCapabilitiesInfo>::toString(const WebCore::MediaCapabilitiesInfo& info)
+{
+    return toJSONString(info);
+}
+
+String LogArgument<WebCore::MediaCapabilitiesDecodingInfo>::toString(const WebCore::MediaCapabilitiesDecodingInfo& info)
+{
+    return toJSONString(info);
+}
+
+String LogArgument<WebCore::MediaCapabilitiesEncodingInfo>::toString(const WebCore::MediaCapabilitiesEncodingInfo& info)
+{
+    return toJSONString(info);
+}
+
+String LogArgument<WebCore::ColorGamut>::toString(const WebCore::ColorGamut& type)
+{
+    return convertEnumerationToString(type);
+}
+
+String LogArgument<WebCore::HdrMetadataType>::toString(const WebCore::HdrMetadataType& type)
+{
+    return convertEnumerationToString(type);
+}
+
+String LogArgument<WebCore::TransferFunction>::toString(const WebCore::TransferFunction& type)
+{
+    return convertEnumerationToString(type);
+}
+
+String LogArgument<WebCore::MediaDecodingType>::toString(const WebCore::MediaDecodingType& type)
+{
+    return convertEnumerationToString(type);
+}
+
+String LogArgument<WebCore::MediaEncodingType>::toString(const WebCore::MediaEncodingType& type)
+{
+    return convertEnumerationToString(type);
+}
+
+}

Added: trunk/Source/WebCore/platform/mediacapabilities/MediaCapabilitiesLogging.h (0 => 253455)


--- trunk/Source/WebCore/platform/mediacapabilities/MediaCapabilitiesLogging.h	                        (rev 0)
+++ trunk/Source/WebCore/platform/mediacapabilities/MediaCapabilitiesLogging.h	2019-12-13 00:48:03 UTC (rev 253455)
@@ -0,0 +1,119 @@
+/*
+ * Copyright (C) 2019 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/text/WTFString.h>
+
+namespace WebCore {
+
+struct VideoConfiguration;
+struct AudioConfiguration;
+struct MediaConfiguration;
+struct MediaDecodingConfiguration;
+struct MediaEncodingConfiguration;
+struct MediaCapabilitiesInfo;
+struct MediaCapabilitiesDecodingInfo;
+struct MediaCapabilitiesEncodingInfo;
+
+enum class ColorGamut;
+enum class HdrMetadataType;
+enum class TransferFunction;
+enum class MediaDecodingType;
+enum class MediaEncodingType;
+
+}
+
+namespace WTF {
+
+template<typename>
+struct LogArgument;
+
+template <>
+struct LogArgument<WebCore::VideoConfiguration> {
+    static String toString(const WebCore::VideoConfiguration&);
+};
+
+template <>
+struct LogArgument<WebCore::AudioConfiguration> {
+    static String toString(const WebCore::AudioConfiguration&);
+};
+
+template <>
+struct LogArgument<WebCore::MediaConfiguration> {
+    static String toString(const WebCore::MediaConfiguration&);
+};
+
+template <>
+struct LogArgument<WebCore::MediaDecodingConfiguration> {
+    static String toString(const WebCore::MediaDecodingConfiguration&);
+};
+
+template <>
+struct LogArgument<WebCore::MediaEncodingConfiguration> {
+    static String toString(const WebCore::MediaEncodingConfiguration&);
+};
+
+template <>
+struct LogArgument<WebCore::MediaCapabilitiesInfo> {
+    static String toString(const WebCore::MediaCapabilitiesInfo&);
+};
+
+template <>
+struct LogArgument<WebCore::MediaCapabilitiesDecodingInfo> {
+    static String toString(const WebCore::MediaCapabilitiesDecodingInfo&);
+};
+
+template <>
+struct LogArgument<WebCore::MediaCapabilitiesEncodingInfo> {
+    static String toString(const WebCore::MediaCapabilitiesEncodingInfo&);
+};
+
+template <>
+struct LogArgument<WebCore::ColorGamut> {
+    static String toString(const WebCore::ColorGamut&);
+};
+
+template <>
+struct LogArgument<WebCore::HdrMetadataType> {
+    static String toString(const WebCore::HdrMetadataType&);
+};
+
+template <>
+struct LogArgument<WebCore::TransferFunction> {
+    static String toString(const WebCore::TransferFunction&);
+};
+
+template <>
+struct LogArgument<WebCore::MediaDecodingType> {
+    static String toString(const WebCore::MediaDecodingType&);
+};
+
+template <>
+struct LogArgument<WebCore::MediaEncodingType> {
+    static String toString(const WebCore::MediaEncodingType&);
+};
+
+}
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