[Webkit-unassigned] [Bug 193678] New: Create AVFoundationSoftLink.{h, mm} to reduce dirty memory pages and duplicate code

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=193678

            Bug ID: 193678
           Summary: Create AVFoundationSoftLink.{h,mm} to reduce dirty
                    memory pages and duplicate code
           Product: WebKit
           Version: WebKit Local Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Media Elements
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: ddkilzer at webkit.org
                CC: eric.carlson at apple.com, jer.noble at apple.com,
                    jonlee at apple.com

Create AVFoundationSoftLink.{h,mm} to reduce dirty memory pages and duplicate code.

There are currently 34 source files that appear to soft-link AVFoundation.framework, which means each contains duplicate code to do the symlinking as well as duplicate globals that will cause the memory pages that contain them to become dirty.  Consolidating these into one source file will reduce the duplicate code, and should minimize dirty pages.

$ grep -r 'SOFT_LINK_FRAMEWORK.*(' Source | grep -v '_FOR_SOURCE' | grep -v '_FOR_HEADER' | grep -v '#define' | grep -v ChangeLog | grep AVFoundation | egrep '\.(cpp|mm):' | cut -d':' -f1 | sort | uniq 
Source/WebCore/Modules/plugins/QuickTimePluginReplacement.mm
Source/WebCore/platform/audio/ios/AudioSessionIOS.mm
Source/WebCore/platform/audio/ios/MediaSessionManagerIOS.mm
Source/WebCore/platform/graphics/avfoundation/AVTrackPrivateAVFObjCImpl.mm
Source/WebCore/platform/graphics/avfoundation/AudioSourceProviderAVFObjC.mm
Source/WebCore/platform/graphics/avfoundation/MediaPlaybackTargetMac.mm
Source/WebCore/platform/graphics/avfoundation/MediaSelectionGroupAVFObjC.mm
Source/WebCore/platform/graphics/avfoundation/objc/AVFoundationMIMETypeCache.mm
Source/WebCore/platform/graphics/avfoundation/objc/CDMInstanceFairPlayStreamingAVFObjC.mm
Source/WebCore/platform/graphics/avfoundation/objc/CDMSessionAVContentKeySession.mm
Source/WebCore/platform/graphics/avfoundation/objc/CDMSessionAVFoundationObjC.mm
Source/WebCore/platform/graphics/avfoundation/objc/CDMSessionAVStreamSession.mm
Source/WebCore/platform/graphics/avfoundation/objc/ImageDecoderAVFObjC.mm
Source/WebCore/platform/graphics/avfoundation/objc/InbandTextTrackPrivateAVFObjC.mm
Source/WebCore/platform/graphics/avfoundation/objc/InbandTextTrackPrivateLegacyAVFObjC.mm
Source/WebCore/platform/graphics/avfoundation/objc/MediaPlaybackTargetPickerMac.mm
Source/WebCore/platform/graphics/avfoundation/objc/MediaPlayerPrivateAVFoundationObjC.mm
Source/WebCore/platform/graphics/avfoundation/objc/MediaPlayerPrivateMediaSourceAVFObjC.mm
Source/WebCore/platform/graphics/avfoundation/objc/MediaPlayerPrivateMediaStreamAVFObjC.mm
Source/WebCore/platform/graphics/avfoundation/objc/SourceBufferPrivateAVFObjC.mm
Source/WebCore/platform/graphics/ca/cocoa/PlatformCALayerCocoa.mm
Source/WebCore/platform/ios/PlatformSpeechSynthesizerIOS.mm
Source/WebCore/platform/ios/VideoFullscreenInterfaceAVKit.mm
Source/WebCore/platform/mac/SerializedPlatformRepresentationMac.mm
Source/WebCore/platform/mediarecorder/cocoa/MediaRecorderPrivateWriterCocoa.mm
Source/WebCore/platform/mediastream/ios/AVAudioSessionCaptureDeviceManager.mm
Source/WebCore/platform/mediastream/ios/CoreAudioCaptureSourceIOS.mm
Source/WebCore/platform/mediastream/mac/AVCaptureDeviceManager.mm
Source/WebCore/platform/mediastream/mac/AVVideoCaptureSource.mm
Source/WebKit/Shared/ios/WebIconUtilities.mm
Source/WebKit/Shared/mac/WebCoreArgumentCodersMac.mm
Source/WebKit/UIProcess/Cocoa/UIDelegate.mm
Source/WebKit/WebProcess/WebPage/RemoteLayerTree/PlatformCALayerRemoteCustom.mm
Source/WebKitLegacy/mac/WebView/WebVideoFullscreenController.mm

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