Support a rational time class for use by media elements.

https://bugs.webkit.org/show_bug.cgi?id=88787

Source/JavaScriptCore:

Re-export WTF::MediaTime from JavaScriptCore.

Reviewed by Eric Carlson.

* JavaScriptCore.order:
* JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def:

Source/WTF:

Reviewed by Eric Carlson.

Add a new MediaTime class which implements rational math operations.

Add common constructors and assignment operators:
* wtf/MediaTime.cpp: Added.
(WTF::MediaTime::MediaTime):
(WTF::MediaTime::~MediaTime):
(WTF::MediaTime::operator=):

Add common math operators:
* wtf/MediaTime.cpp:
(WTF::MediaTime::operator+):
(WTF::MediaTime::operator-):
(WTF::MediaTime::operator<):
(WTF::MediaTime::operator>):
(WTF::MediaTime::operator==):
(WTF::MediaTime::operator>=):
(WTF::MediaTime::operator<=):

Add functions to check the MeiaTime time type flags:
* wtf/MediaTime.h:
(WTF::MediaTime::isValid):
(WTF::MediaTime::isInvalid):
(WTF::MediaTime::hasBeenRounde):
(WTF::MediaTime::isPositiveInfinite):
(WTF::MediaTime::isNegativeInfinite):
(WTF::MediaTime::isIndefinite):

Add constants for commonly used MediaTime values:
(WTF::MediaTime::zeroTime):
(WTF::MediaTime::invalidTime):
(WTF::MediaTime::positiveInfiniteTime):
(WTF::MediaTime::negativeInfiniteTime):
(WTF::MediaTime::indefiniteTime):

Add explicit conversion functions to convert to and from floating point values.
* wtf/MediaTime.cpp:
(WTF::MediaTime::createWithFloat):
(WTF::MediaTime::createWithDouble):
(WTF::MediaTime::toFloat):
(WTF::MediaTime::toDouble):

Add some useful exported functions:
* wtf/MediaTime.cpp:
(WTF::MediaTime::compare): Master function for the comparison operators above.
(WTF::MediaTime::setTimeScale): Rescale the time value to a new time scale.
(WTF::abs): Return an absolute value for the current MediaTime.

Static utility functions to implement the above:
* wtf/MediaTime.cpp:
(WTF::greatestCommonDivisor):
(WTF::leastCommonMultiple):
(WTF::signum):

Windows-only implementations of isinf and signbit:
* wtf/MediaTime.cpp:
(std::isinf):
(std::signbit):

Add the new class to platform build files:
* GNUmakefile.list.am:
* WTF.gypi:
* WTF.pro:
* WTF.vcproj/WTF.vcproj:
* WTF.xcodeproj/project.pbxproj:

Tools:

Add unit tests for the WTF::MediaTime class.

Reviewed by Eric Carlson.

* TestWebKitAPI/GNUmakefile.am:
* TestWebKitAPI/TestWebKitAPI.gypi:
* TestWebKitAPI/TestWebKitAPI.xcodeproj/project.pbxproj:
* TestWebKitAPI/Tests/WTF/MediaTime.cpp: Added.
* TestWebKitAPI/win/TestWebKitAPI.vcproj:
(WTF::operator<<):
(TestWebKitAPI):
(TestWebKitAPI::TEST):

Canonical link: https://commits.webkit.org/110313@main
git-svn-id: https://svn.webkit.org/repository/webkit/trunk@123878 268f45cc-cd09-0410-ab3c-d52691b4dbfc

Source/JavaScriptCore/ChangeLog

@@ -1,3 +1,15 @@
+2012-07-27  Jer Noble  <jer.noble@apple.com>
+
+        Support a rational time class for use by media elements.
+        https://bugs.webkit.org/show_bug.cgi?id=88787
+
+        Re-export WTF::MediaTime from JavaScriptCore.
+
+        Reviewed by Eric Carlson.
+
+        * JavaScriptCore.order:
+        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def:
+
 2012-07-26  Filip Pizlo  <fpizlo@apple.com>
 
         JSObject::reallocateStorageIfNecessary is neither used nor defined

Source/JavaScriptCore/JavaScriptCore.order

@@ -2494,3 +2494,16 @@ __ZN3WTF6VectorIN3JSC10ASTBuilder14AssignmentInfoELm10EE14expandCapacityEm
 _cti_op_put_by_id_direct_generic
 __ZN3WTF9HashTableIPN3JSC16FunctionBodyNodeESt4pairIS3_jENS_18PairFirstExtractorIS5_EENS_7PtrHashIS3_EENS_14PairHashTraitsINS_10HashTraitsIS3_EENSB_IjEEEESC_E4findIS3_NS_22IdentityHashTranslatorIS3_S5_S9_EEEENS_17HashTableIteratorIS3_S5_S7_S9_SE_SC_EERKT_
 __ZN3WTF9HashTableIPN3JSC16FunctionBodyNodeESt4pairIS3_jENS_18PairFirstExtractorIS5_EENS_7PtrHashIS3_EENS_14PairHashTraitsINS_10HashTraitsIS3_EENSB_IjEEEESC_E6expandEv
+__ZN3WTF3absERKNS_9MediaTimeE
+__ZN3WTF9MediaTime11invalidTimeEv
+__ZN3WTF9MediaTime14indefiniteTimeEv
+__ZN3WTF9MediaTime15createWithFloatEfi
+__ZN3WTF9MediaTime16createWithDoubleEdi
+__ZN3WTF9MediaTime20negativeInfiniteTimeEv
+__ZN3WTF9MediaTime20positiveInfiniteTimeEv
+__ZN3WTF9MediaTimeD1Ev
+__ZNK3WTF9MediaTimegtERKS0_
+__ZNK3WTF9MediaTimeltERKS0_
+__ZNK3WTF9MediaTimemiERKS0_
+__ZNK3WTF9MediaTimeplERKS0_
+

Source/JavaScriptCore/JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def

@@ -379,6 +379,23 @@ EXPORTS
     ?writable@PropertyDescriptor@JSC@@QBE_NXZ
     ?writeBarrier@HandleSet@JSC@@QAEXPAVJSValue@2@ABV32@@Z
     ?yield@WTF@@YAXXZ
+    ?toDouble@MediaTime@WTF@@QBENXZ 
+    ?toFloat@MediaTime@WTF@@QBEMXZ 
+    ?createWithDouble@MediaTime@WTF@@SA?AV12@NH@Z 
+    ?createWithFloat@MediaTime@WTF@@SA?AV12@MH@Z 
+    ?abs@WTF@@YA?AVMediaTime@1@ABV21@@Z 
+    ?zeroTime@MediaTime@WTF@@SAABV12@XZ 
+    ??GMediaTime@WTF@@QBE?AV01@ABV01@@Z 
+    ??HMediaTime@WTF@@QBE?AV01@ABV01@@Z 
+    ??1MediaTime@WTF@@QAE@XZ 
+    ??0MediaTime@WTF@@QAE@_JHI@Z 
+    ?indefiniteTime@MediaTime@WTF@@SAABV12@XZ 
+    ?invalidTime@MediaTime@WTF@@SAABV12@XZ 
+    ??8MediaTime@WTF@@QBE_NABV01@@Z 
+    ??MMediaTime@WTF@@QBE_NABV01@@Z 
+    ??OMediaTime@WTF@@QBE_NABV01@@Z 
+    ?positiveInfiniteTime@MediaTime@WTF@@SAABV12@XZ 
+    ?negativeInfiniteTime@MediaTime@WTF@@SAABV12@XZ
     WTFGetBacktrace
     WTFInvokeCrashHook
     WTFLog

Source/WTF/ChangeLog

@@ -1,3 +1,75 @@
+2012-07-27  Jer Noble  <jer.noble@apple.com>
+
+        Support a rational time class for use by media elements.
+        https://bugs.webkit.org/show_bug.cgi?id=88787
+
+        Reviewed by Eric Carlson.
+
+        Add a new MediaTime class which implements rational math operations.
+
+        Add common constructors and assignment operators:
+        * wtf/MediaTime.cpp: Added.
+        (WTF::MediaTime::MediaTime):
+        (WTF::MediaTime::~MediaTime):
+        (WTF::MediaTime::operator=):
+
+        Add common math operators:
+        * wtf/MediaTime.cpp:
+        (WTF::MediaTime::operator+):
+        (WTF::MediaTime::operator-):
+        (WTF::MediaTime::operator<):
+        (WTF::MediaTime::operator>):
+        (WTF::MediaTime::operator==):
+        (WTF::MediaTime::operator>=):
+        (WTF::MediaTime::operator<=):
+
+        Add functions to check the MeiaTime time type flags:
+        * wtf/MediaTime.h:
+        (WTF::MediaTime::isValid):
+        (WTF::MediaTime::isInvalid):
+        (WTF::MediaTime::hasBeenRounde):
+        (WTF::MediaTime::isPositiveInfinite):
+        (WTF::MediaTime::isNegativeInfinite):
+        (WTF::MediaTime::isIndefinite):
+
+        Add constants for commonly used MediaTime values:
+        (WTF::MediaTime::zeroTime):
+        (WTF::MediaTime::invalidTime):
+        (WTF::MediaTime::positiveInfiniteTime):
+        (WTF::MediaTime::negativeInfiniteTime):
+        (WTF::MediaTime::indefiniteTime):
+
+        Add explicit conversion functions to convert to and from floating point values.
+        * wtf/MediaTime.cpp:
+        (WTF::MediaTime::createWithFloat):
+        (WTF::MediaTime::createWithDouble):
+        (WTF::MediaTime::toFloat):
+        (WTF::MediaTime::toDouble):
+
+        Add some useful exported functions:
+        * wtf/MediaTime.cpp:
+        (WTF::MediaTime::compare): Master function for the comparison operators above.
+        (WTF::MediaTime::setTimeScale): Rescale the time value to a new time scale.
+        (WTF::abs): Return an absolute value for the current MediaTime.
+
+        Static utility functions to implement the above:
+        * wtf/MediaTime.cpp:
+        (WTF::greatestCommonDivisor):
+        (WTF::leastCommonMultiple):
+        (WTF::signum):
+
+        Windows-only implementations of isinf and signbit:
+        * wtf/MediaTime.cpp:
+        (std::isinf):
+        (std::signbit):
+
+        Add the new class to platform build files:
+        * GNUmakefile.list.am:
+        * WTF.gypi:
+        * WTF.pro:
+        * WTF.vcproj/WTF.vcproj:
+        * WTF.xcodeproj/project.pbxproj:
+
 2012-07-27  Wei James  <james.wei@intel.com>
 
         set WTF_USE_LOCKFREE_THREADSAFEREFCOUNTED for chromium android

Source/WTF/GNUmakefile.list.am

@@ -76,6 +76,8 @@ wtf_sources += \
     Source/WTF/wtf/MainThread.h \
     Source/WTF/wtf/MallocZoneSupport.h \
     Source/WTF/wtf/MathExtras.h \
+    Source/WTF/wtf/MediaTime.h \
+    Source/WTF/wtf/MediaTime.cpp \
     Source/WTF/wtf/MessageQueue.h \
     Source/WTF/wtf/MetaAllocator.cpp \
     Source/WTF/wtf/MetaAllocator.h \

Source/WTF/WTF.gypi

@@ -152,6 +152,8 @@
             'wtf/MD5.cpp',
             'wtf/MainThread.cpp',
             'wtf/MallocZoneSupport.h',
+            'wtf/MediaTime.h',
+            'wtf/MediaTime.cpp',
             'wtf/NullPtr.cpp',
             'wtf/NumberOfCores.cpp',
             'wtf/NumberOfCores.h',

Source/WTF/WTF.pro

@@ -80,6 +80,7 @@ HEADERS += \
     MallocZoneSupport.h \
     MathExtras.h \
     MD5.h \
+    MediaTime.h \
     MessageQueue.h \
     MetaAllocator.h \
     MetaAllocatorHandle.h \
@@ -194,6 +195,7 @@ SOURCES += \
     HashTable.cpp \
     MD5.cpp \
     MainThread.cpp \
+    MediaTime.cpp \
     MetaAllocator.cpp \
     NullPtr.cpp \
     NumberOfCores.cpp \

Source/WTF/WTF.vcproj/WTF.vcproj

@@ -884,6 +884,14 @@
 			RelativePath="..\wtf\MD5.h"
 			>
 		</File>
+		<File
+			RelativePath="..\wtf\MediaTime.h"
+			>
+		</File>
+		<File
+			RelativePath="..\wtf\MediaTime.cpp"
+			>
+		</File>
 		<File
 			RelativePath="..\wtf\MessageQueue.h"
 			>

Source/WTF/WTF.xcodeproj/project.pbxproj

@@ -245,6 +245,8 @@
 		A8A47486151A825B004123FF /* WTFThreadData.cpp in Sources */ = {isa = PBXBuildFile; fileRef = A8A4737A151A825B004123FF /* WTFThreadData.cpp */; };
 		A8A47487151A825B004123FF /* WTFThreadData.h in Headers */ = {isa = PBXBuildFile; fileRef = A8A4737B151A825B004123FF /* WTFThreadData.h */; };
 		A8A4748C151A8264004123FF /* config.h in Headers */ = {isa = PBXBuildFile; fileRef = A8A4748B151A8264004123FF /* config.h */; };
+		CD5497AC15857D0300B5BC30 /* MediaTime.cpp in Sources */ = {isa = PBXBuildFile; fileRef = CD5497AA15857D0300B5BC30 /* MediaTime.cpp */; };
+		CD5497AD15857D0300B5BC30 /* MediaTime.h in Headers */ = {isa = PBXBuildFile; fileRef = CD5497AB15857D0300B5BC30 /* MediaTime.h */; };
 /* End PBXBuildFile section */
 
 /* Begin PBXFileReference section */
@@ -496,6 +498,8 @@
 		A8A4737A151A825B004123FF /* WTFThreadData.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = WTFThreadData.cpp; sourceTree = "<group>"; };
 		A8A4737B151A825B004123FF /* WTFThreadData.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = WTFThreadData.h; sourceTree = "<group>"; };
 		A8A4748B151A8264004123FF /* config.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = config.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>"; };
 /* End PBXFileReference section */
 
 /* Begin PBXFrameworksBuildPhase section */
@@ -634,6 +638,8 @@
 				A8A472C9151A825B004123FF /* MathExtras.h */,
 				A8A472CA151A825B004123FF /* MD5.cpp */,
 				A8A472CB151A825B004123FF /* MD5.h */,
+				CD5497AA15857D0300B5BC30 /* MediaTime.cpp */,
+				CD5497AB15857D0300B5BC30 /* MediaTime.h */,
 				A8A472CC151A825B004123FF /* MessageQueue.h */,
 				A8A472CD151A825B004123FF /* MetaAllocator.cpp */,
 				A8A472CE151A825B004123FF /* MetaAllocator.h */,
@@ -954,6 +960,7 @@
 				A8A473E7151A825B004123FF /* MallocZoneSupport.h in Headers */,
 				A8A473E8151A825B004123FF /* MathExtras.h in Headers */,
 				A8A473EA151A825B004123FF /* MD5.h in Headers */,
+				CD5497AD15857D0300B5BC30 /* MediaTime.h in Headers */,
 				A8A473EB151A825B004123FF /* MessageQueue.h in Headers */,
 				A8A473ED151A825B004123FF /* MetaAllocator.h in Headers */,
 				A8A473EE151A825B004123FF /* MetaAllocatorHandle.h in Headers */,
@@ -1168,6 +1175,7 @@
 				A8A473D8151A825B004123FF /* HashTable.cpp in Sources */,
 				A8A473E5151A825B004123FF /* MainThread.cpp in Sources */,
 				A8A473E4151A825B004123FF /* MainThreadMac.mm in Sources */,
+				CD5497AC15857D0300B5BC30 /* MediaTime.cpp in Sources */,
 				A8A473E9151A825B004123FF /* MD5.cpp in Sources */,
 				A8A473EC151A825B004123FF /* MetaAllocator.cpp in Sources */,
 				A8A473F2151A825B004123FF /* NullPtr.cpp in Sources */,