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CSystemClockSource Class Reference

class CSystemClockSource : public CBase

The CSystemClockSource provides a basic clock source implementation based on the system clock. It will count microseconds since the object was created or Reset() was last called, and return that count from Time() . It does not implement any custom interfaces.

Inherits from

Public Member Functions
~CSystemClockSource ()
TAny * CustomInterface ( TUid )
IMPORT_C CSystemClockSource * NewL ()
IMPORT_C void Reset ()
IMPORT_C void Reset (const TTimeIntervalMicroSeconds &)
IMPORT_C void Resume ()
IMPORT_C void Suspend ()
TTimeIntervalMicroSeconds Time ()
Private Member Functions
CSystemClockSource ()
void ConstructL ()
Inherited Functions
CBase::CBase()
CBase::Delete(CBase *)
CBase::Extension_(TUint,TAny *&,TAny *)
CBase::operator new(TUint)
CBase::operator new(TUint,TAny *)
CBase::operator new(TUint,TLeave)
CBase::operator new(TUint,TLeave,TUint)
CBase::operator new(TUint,TUint)
CBase::~CBase()
Private Attributes
RCriticalSection iCriticalSection
TTime iCurrentTime
TTimeIntervalMicroSeconds iOffset
TTime iStartTime
TBool iSuspended
TTimeIntervalMicroSeconds iTimeSuspended
TTime iTimeWhenSuspended

Constructor & Destructor Documentation

CSystemClockSource()

CSystemClockSource ( ) [private]

~CSystemClockSource()

IMPORT_C ~CSystemClockSource ( )

Destructor.

Member Functions Documentation

ConstructL()

void ConstructL ( ) [private]

CustomInterface(TUid)

TAny * CustomInterface ( TUid aInterface ) [virtual]

No custom interfaces are implemented by this clock source, so this method will always return NULL.

Parameters

TUid aInterface "The interface"

NewL()

IMPORT_C CSystemClockSource * NewL ( ) [static]
Creates a new CSystemClockSource object.
leave
"This method may leave with one of the system-wide error codes."

Reset()

IMPORT_C void Reset ( )

Resets the clock source to zero. Typically called by the DevVideo client at stream start.

Reset(const TTimeIntervalMicroSeconds &)

IMPORT_C void Reset ( const TTimeIntervalMicroSeconds & aOffset )

Resets the clock source to a user-defined offset. Typically called by the DevVideo client when seeking in a file.

Parameters

const TTimeIntervalMicroSeconds & aOffset "The clock offset."

Resume()

IMPORT_C void Resume ( )

Resumes the clock source after a Suspend() method call. This method is used when resuming playback.

Suspend()

IMPORT_C void Suspend ( )

Suspends the clock source. The clock time will not increment until the clock has been resumed. This method is used when pausing playback.

Time()

TTimeIntervalMicroSeconds Time ( ) [virtual]

Retrieves the time that has elapsed since Reset() was last called, subtracting any time during which the clock was suspended.

Member Data Documentation

RCriticalSection iCriticalSection

RCriticalSection iCriticalSection [private]

TTime iCurrentTime

TTime iCurrentTime [private]

TTimeIntervalMicroSeconds iOffset

TTimeIntervalMicroSeconds iOffset [private]

TTime iStartTime

TTime iStartTime [private]

TBool iSuspended

TBool iSuspended [private]

TTimeIntervalMicroSeconds iTimeSuspended

TTimeIntervalMicroSeconds iTimeSuspended [private]

TTime iTimeWhenSuspended

TTime iTimeWhenSuspended [private]

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All rights reserved. Unless otherwise stated, these materials are provided under the terms of the Eclipse Public License v1.0.