net.luniks.linux.jv4linfo
Class V4L2Ctrl

java.lang.Object
  net.luniks.linux.jv4linfo.V4L2Ctrl

public class V4L2Ctrl

extends java.lang.Object

Class to query and control a v4l2 device such as getting or setting the currently selected video standard

Author:

Torsten Römer, www.luniks.net

Field Summary

private java.lang.String	device
private V4L2Info	info

Constructor Summary

V4L2Ctrl(java.lang.String device)

Method Summary

V4L2Info	getInfo()
int	getSelectedAudiomode() Looks at all inputs starting with index '0' and returns the audiomode of the tuner associated with the first input of type tuner
V4L2Frequency	getSelectedFrequency() Looks at all inputs starting with index '0' and returns the frequency of the tuner associated with the first input of type tuner as V4L2Frequency instance
V4L2Input	getSelectedInput() Returns the currently selected input as V4L2Input instance.
V4L2Standard	getSelectedStandard() Returns the currently selected standard as V4L2Standard instance.
V4L2Tuner	getTuner() Looks at all inputs starting with index '0' and returns the tuner associated with the first input of type tuner
void	setMuted(boolean mute) Mutes or unmutes the device
void	setSelectedAudiomode(int value) Looks at all inputs starting with index '0' and sets the audiomode of the tuner associated with the first input of type tuner to the audiomode value given as argument
void	setSelectedFrequency(int units) Looks at all inputs starting with index '0' and sets the frequency of the tuner associated with the first input of type tuner to the frequency value given as argument in units of 62.5 Hz if V4L2Tuner.isCapLow() returns true, in units of 62.5 kHz otherwise.
void	setSelectedInput(int index) Sets the selected input by the index given as argument
void	setSelectedStandard(int index) Sets the selected standard by the index given as argument
void	setSelectedStandard(long id) Sets the selected standard by the id given as argument
java.lang.String	toString() String representation of the current selection

Methods inherited from class java.lang.Object

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

Field Detail

device

private java.lang.String device

info

private V4L2Info info

Constructor Detail

V4L2Ctrl

public V4L2Ctrl(java.lang.String device)
         throws JV4LInfoException

Method Detail

getInfo

public V4L2Info getInfo()

getSelectedInput

public V4L2Input getSelectedInput()
                           throws JV4LInfoException

Returns the currently selected input as V4L2Input instance.

Returns:

the currently selected input

Throws:

JV4LInfoException

getSelectedStandard

public V4L2Standard getSelectedStandard()
                                 throws JV4LInfoException

Returns the currently selected standard as V4L2Standard instance.

Returns:

the currently selected standard

Throws:

JV4LInfoException

getTuner

public V4L2Tuner getTuner()
                   throws JV4LInfoException

Looks at all inputs starting with index '0' and returns the tuner associated with the first input of type tuner

Returns:

the tuner

Throws:

JV4LInfoException

getSelectedFrequency

public V4L2Frequency getSelectedFrequency()
                                   throws JV4LInfoException

Looks at all inputs starting with index '0' and returns the frequency of the tuner associated with the first input of type tuner as V4L2Frequency instance

Returns:

the frequency

Throws:

JV4LInfoException

getSelectedAudiomode

public int getSelectedAudiomode()
                         throws JV4LInfoException

Looks at all inputs starting with index '0' and returns the audiomode of the tuner associated with the first input of type tuner

Returns:

the frequency

Throws:

JV4LInfoException

setSelectedInput

public void setSelectedInput(int index)
                      throws JV4LInfoException

Sets the selected input by the index given as argument

Parameters:

index - the index to set the input to

Throws:

JV4LInfoException

setSelectedStandard

public void setSelectedStandard(long id)
                         throws JV4LInfoException

Sets the selected standard by the id given as argument

Parameters:

id - the id to set the standard to

Throws:

JV4LInfoException

setSelectedStandard

public void setSelectedStandard(int index)
                         throws JV4LInfoException

Sets the selected standard by the index given as argument

Parameters:

index - the index to set the standard to

Throws:

JV4LInfoException

setSelectedFrequency

public void setSelectedFrequency(int units)
                          throws JV4LInfoException

Looks at all inputs starting with index '0' and sets the frequency of the tuner associated with the first input of type tuner to the frequency value given as argument in units of 62.5 Hz if V4L2Tuner.isCapLow() returns true, in units of 62.5 kHz otherwise.

Parameters:

units - the units to set the frequency to

Throws:

JV4LInfoException

setSelectedAudiomode

public void setSelectedAudiomode(int value)
                          throws JV4LInfoException

Looks at all inputs starting with index '0' and sets the audiomode of the tuner associated with the first input of type tuner to the audiomode value given as argument

Parameters:

value - the value of the audiomode to be set

Throws:

JV4LInfoException

setMuted

public void setMuted(boolean mute)
              throws JV4LInfoException

Mutes or unmutes the device

Parameters:

mute - true to mute, false to unmute

Throws:

JV4LInfoException

toString

public java.lang.String toString()

String representation of the current selection