com.sun.media
类 BasicClock

java.lang.Object
  com.sun.media.BasicClock

所有已实现的接口：

Clock

public class BasicClock
extends java.lang.Object
implements Clock

BasicClock implements javax.media.Clock. This is not a running thread that implements the clock ticks. It just implements the math and maintains the correct states to perform the computations from media-time to time-base-time.

字段摘要

static int	STARTED
static int	STOPPED

从接口 javax.media.Clock 继承的字段

RESET

构造方法摘要

BasicClock()

方法摘要

long	getMediaNanoseconds() Get the current media time in nanoseconds.
Time	getMediaTime() Return the current media time.
float	getRate() Get the current presentation speed.
int	getState() Return the current state of the clock in either started or stopped state.
Time	getStopTime() Return the preset stop time.
Time	getSyncTime() Return the Sync Time.
TimeBase	getTimeBase() Get the Time Base that the clock is currently using.
Time	mapToTimeBase(Time t) Map the the given media-time to time-base-time.
protected void	setMediaLength(long t) Set the upper bound of the media time.
protected void	setMediaStart(long t) Set the lower bound of the media time.
void	setMediaTime(Time now) Set the media time.
float	setRate(float factor) Set the rate of presentation: 1.0: normal, 2.0: twice the speed
void	setStopTime(Time t) Preset a stop time in media time.
void	setTimeBase(TimeBase master) Set a time base on the clock.
void	stop() Stop the clock immediately.
void	syncStart(Time tbt) Start the clock with the given time-base-time
protected void	throwError(java.lang.Error e)

从类 java.lang.Object 继承的方法

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

字段详细信息

STOPPED

public static final int STOPPED

另请参见：

常量字段值

STARTED

public static final int STARTED

另请参见：

常量字段值

构造方法详细信息

BasicClock

public BasicClock()

方法详细信息

setTimeBase

public void setTimeBase(TimeBase master)
                 throws IncompatibleTimeBaseException

Set a time base on the clock. All media-time to time-base-time will be computed with the given time base.

指定者：

接口 Clock 中的 setTimeBase

参数：

master - the new master time base.

抛出：

IncompatibleTimeBaseException - thrown if clock cannot accept the given time base.

syncStart

public void syncStart(Time tbt)

Start the clock with the given time-base-time

指定者：

接口 Clock 中的 syncStart

参数：

the - time base time to start the clock.

stop

public void stop()

Stop the clock immediately.

指定者：

接口 Clock 中的 stop

setStopTime

public void setStopTime(Time t)

Preset a stop time in media time.

指定者：

接口 Clock 中的 setStopTime

参数：

t - the preset stop time.

getStopTime

public Time getStopTime()

Return the preset stop time.

指定者：

接口 Clock 中的 getStopTime

返回：

the preset stop time.

setMediaTime

public void setMediaTime(Time now)

Set the media time. This will be the media presented at the clock's start time.

指定者：

接口 Clock 中的 setMediaTime

参数：

the - media time to set to.

getMediaTime

public Time getMediaTime()

Return the current media time.

指定者：

接口 Clock 中的 getMediaTime

返回：

the current media time.

getMediaNanoseconds

public long getMediaNanoseconds()

Get the current media time in nanoseconds.

指定者：

接口 Clock 中的 getMediaNanoseconds

返回：

the current media time in nanoseconds.

setMediaStart

protected void setMediaStart(long t)

Set the lower bound of the media time.

参数：

t - the lower bound of the media time.

setMediaLength

protected void setMediaLength(long t)

Set the upper bound of the media time.

参数：

t - the upper bound of the media time.

getState

public int getState()

Return the current state of the clock in either started or stopped state.

返回：

the current clock state.

getSyncTime

public Time getSyncTime()

Return the Sync Time. Not yet implementated.

指定者：

接口 Clock 中的 getSyncTime

getTimeBase

public TimeBase getTimeBase()

Get the Time Base that the clock is currently using.

指定者：

接口 Clock 中的 getTimeBase

返回：

the Time Base that the clock is currently using.

mapToTimeBase

public Time mapToTimeBase(Time t)
                   throws ClockStoppedException

Map the the given media-time to time-base-time.

指定者：

接口 Clock 中的 mapToTimeBase

参数：

t - media time

返回：

time base time.

抛出：

ClockStoppedException - is thrown if this method is invoked on a stopped clock.

setRate

public float setRate(float factor)

Set the rate of presentation: 1.0: normal, 2.0: twice the speed. -2.0: twice the speed in reverse.

指定者：

接口 Clock 中的 setRate

参数：

the - speed factor.

返回：

the actual rate the clock is set to.

getRate

public float getRate()

Get the current presentation speed.

指定者：

接口 Clock 中的 getRate

返回：

the current presentation speed.

throwError

protected void throwError(java.lang.Error e)