#include <MixerElement.H>

Collaboration diagram for ALSA::MixerElement:

Public Member Functions
	MixerElement ()

	MixerElement (snd_mixer_elem_t *e)

virtual	~MixerElement ()

int	setPlaybackSwitch (int v)

long	setPlaybackVol (long v)

long	setPlaybackVol (snd_mixer_selem_channel_id_t channel, long v)

int	setPlaybackVolDB (double &dB)

long	setPlaybackVolDB (snd_mixer_selem_channel_id_t channel, double &dB)

int	setCaptureSwitch (int v)

long	setCaptureVol (long v)

long	setCaptureVol (snd_mixer_selem_channel_id_t channel, long v)

int	setCaptureVolDB (double &dB)

long	setCaptureVolDB (snd_mixer_selem_channel_id_t channel, double &dB)

Public Attributes
std::string	name
	The mixer element name. More...

snd_mixer_elem_t *	elem
	The pointer to the element. More...

unsigned int	index
	The mixer element index. More...

bool	hasCommonVolume
	element has only one volume control for both playback and capture More...

bool	hasPlaybackVolume
	0 if no control is present, 1 if it's present More...

bool	hasPlaybackVolumeJoined
	0 if control is separated per channel, 1 if control acts on all channels together More...

bool	hasCaptureVolume
	0 if no control is present, 1 if it's present More...

bool	hasCaptureVolumeJoined
	0 if control is separated per channel, 1 if control acts on all channels together More...

bool	hasCommonSwitch
	0 separated control, 1 common control More...

bool	hasPlaybackSwitch
	0 if no control is present, 1 if it's present More...

bool	hasPlaybackSwitchJoined
	0 if control is separated per channel, 1 if control acts on all channels together More...

bool	hasCaptureSwitch
	0 if no control is present, 1 if it's present More...

bool	hasCaptureSwitchJoined
	0 if control is separated per channel, 1 if control acts on all channels together More...

bool	hasCaptureSwitchExclusive
	0 if control is separated per element, 1 if control acts on other elements too (i.e. only one active at a time inside a group) More...

long	playbackVolMax

long	playbackVolMin

double	playbackVolMaxDB

double	playbackVolMinDB

long	captureVolMax

long	captureVolMin

double	captureVolMaxDB

double	captureVolMinDB

std::vector< ChannelPlaybackElement >	playbackVolumes
	Volume setting for each playback channel in this mixer element. More...

std::vector< ChannelCaptureElement >	captureVolumes
	Volume setting for each capture channel in this mixer element. More...

Friends
std::ostream &	operator<< (std::ostream &os, MixerElement &me)

Detailed Description

Class to alter the ALSA hardware mixer

Definition at line 136 of file MixerElement.H.

Constructor & Destructor Documentation

◆ MixerElement() [1/2]

ALSA::MixerElement::MixerElement ( )

inline

Definition at line 164 of file MixerElement.H.

◆ MixerElement() [2/2]

ALSA::MixerElement::MixerElement ( snd_mixer_elem_t * e )

inline

Definition at line 186 of file MixerElement.H.

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◆ ~MixerElement()

virtual ALSA::MixerElement::~MixerElement ( )

inlinevirtual

Definition at line 249 of file MixerElement.H.

Member Function Documentation

◆ setCaptureSwitch()

int ALSA::MixerElement::setCaptureSwitch ( int v )

inline

Set the capture switch state for all channels, returning the current capture switch state

Parameters

v	The value to set

Returns: <0 on error or the current state of the switch

Definition at line 349 of file MixerElement.H.

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◆ setCaptureVol() [1/2]

long ALSA::MixerElement::setCaptureVol ( long v )

inline

Set the capture volume for all channels, returning the current capture volume

Parameters

v	The value to set

Returns: <0 on error or the current state of the volume

Definition at line 366 of file MixerElement.H.

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◆ setCaptureVol() [2/2]

long ALSA::MixerElement::setCaptureVol	(	snd_mixer_selem_channel_id_t	channel,
		long	v
	)

inline

Set the capture volume for one channel, returning the current capture volume for that channel

Parameters

channel	The channel to set the volume on
v	The value to set

Returns: <0 on error or the current state of the volume

Definition at line 384 of file MixerElement.H.

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◆ setCaptureVolDB() [1/2]

int ALSA::MixerElement::setCaptureVolDB ( double & dB )

inline

Set the capture volume (in dB) for all channels, returning the current capture volume in dB

Parameters

[in,out] dB The value to set and on return, then actual value

Returns: <0 on error - the current dB of the volume is returned in the parameter dB

Definition at line 403 of file MixerElement.H.

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◆ setCaptureVolDB() [2/2]

long ALSA::MixerElement::setCaptureVolDB	(	snd_mixer_selem_channel_id_t	channel,
		double &	dB
	)

inline

Set the capture volume for one channel, returning the current capture volume for that channel

Parameters

	channel	The channel to set the volume on
[in,out]	dB	The value to set and on return, then actual value

Returns: <0 on error - the current dB of the volume is returned in the parameter dB

Definition at line 422 of file MixerElement.H.

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◆ setPlaybackSwitch()

int ALSA::MixerElement::setPlaybackSwitch ( int v )

inline

Set the playback switch state for all channels, returning the current playback switch state

Parameters

v	The value to set

Returns: <0 on error or the current state of the switch

Definition at line 256 of file MixerElement.H.

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◆ setPlaybackVol() [1/2]

long ALSA::MixerElement::setPlaybackVol ( long v )

inline

Set the playback volume for all channels, returning the current playback volume

Parameters

v	The value to set

Returns: <0 on error or the current state of the volume

Definition at line 273 of file MixerElement.H.

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◆ setPlaybackVol() [2/2]

long ALSA::MixerElement::setPlaybackVol	(	snd_mixer_selem_channel_id_t	channel,
		long	v
	)

inline

Set the playback volume for one channel, returning the current playback volume for that channel

Parameters

channel	The channel to set the volume on
v	The value to set

Returns: <0 on error or the current state of the volume

Definition at line 291 of file MixerElement.H.

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◆ setPlaybackVolDB() [1/2]

int ALSA::MixerElement::setPlaybackVolDB ( double & dB )

inline

Set the playback volume (in dB) for all channels, returning the current playback volume in dB

Parameters

[in,out] dB The value to set and on return, then actual value

Returns: <0 on error - the current dB of the volume is returned in the parameter dB

Definition at line 310 of file MixerElement.H.

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◆ setPlaybackVolDB() [2/2]

long ALSA::MixerElement::setPlaybackVolDB	(	snd_mixer_selem_channel_id_t	channel,
		double &	dB
	)

inline

Set the playback volume for one channel, returning the current playback volume for that channel

Parameters

	channel	The channel to set the volume on
[in,out]	dB	The value to set and on return, then actual value

Returns: <0 on error - the current dB of the volume is returned in the parameter dB

Definition at line 329 of file MixerElement.H.

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Friends And Related Function Documentation

◆ operator<<

std::ostream& operator<<	(	std::ostream &	os,
		MixerElement &	me
	)

friend

Definition at line 438 of file MixerElement.H.

Member Data Documentation

◆ captureVolMax

long ALSA::MixerElement::captureVolMax

Definition at line 156 of file MixerElement.H.

◆ captureVolMaxDB

double ALSA::MixerElement::captureVolMaxDB

Definition at line 158 of file MixerElement.H.

◆ captureVolMin

long ALSA::MixerElement::captureVolMin

Definition at line 157 of file MixerElement.H.

◆ captureVolMinDB

double ALSA::MixerElement::captureVolMinDB

Definition at line 159 of file MixerElement.H.

◆ captureVolumes

std::vector<ChannelCaptureElement> ALSA::MixerElement::captureVolumes

Volume setting for each capture channel in this mixer element.

Definition at line 162 of file MixerElement.H.

◆ elem

snd_mixer_elem_t* ALSA::MixerElement::elem

The pointer to the element.

Definition at line 139 of file MixerElement.H.

◆ hasCaptureSwitch

bool ALSA::MixerElement::hasCaptureSwitch

0 if no control is present, 1 if it's present

Definition at line 149 of file MixerElement.H.

◆ hasCaptureSwitchExclusive

bool ALSA::MixerElement::hasCaptureSwitchExclusive

0 if control is separated per element, 1 if control acts on other elements too (i.e. only one active at a time inside a group)

Definition at line 151 of file MixerElement.H.

◆ hasCaptureSwitchJoined

bool ALSA::MixerElement::hasCaptureSwitchJoined

0 if control is separated per channel, 1 if control acts on all channels together

Definition at line 150 of file MixerElement.H.

◆ hasCaptureVolume

bool ALSA::MixerElement::hasCaptureVolume

0 if no control is present, 1 if it's present

Definition at line 144 of file MixerElement.H.

◆ hasCaptureVolumeJoined

bool ALSA::MixerElement::hasCaptureVolumeJoined

0 if control is separated per channel, 1 if control acts on all channels together

Definition at line 145 of file MixerElement.H.

◆ hasCommonSwitch

bool ALSA::MixerElement::hasCommonSwitch

0 separated control, 1 common control

Definition at line 146 of file MixerElement.H.

◆ hasCommonVolume

bool ALSA::MixerElement::hasCommonVolume

element has only one volume control for both playback and capture

Definition at line 141 of file MixerElement.H.

◆ hasPlaybackSwitch

bool ALSA::MixerElement::hasPlaybackSwitch

0 if no control is present, 1 if it's present

Definition at line 147 of file MixerElement.H.

◆ hasPlaybackSwitchJoined

bool ALSA::MixerElement::hasPlaybackSwitchJoined

0 if control is separated per channel, 1 if control acts on all channels together

Definition at line 148 of file MixerElement.H.

◆ hasPlaybackVolume

bool ALSA::MixerElement::hasPlaybackVolume

0 if no control is present, 1 if it's present

Definition at line 142 of file MixerElement.H.

◆ hasPlaybackVolumeJoined

bool ALSA::MixerElement::hasPlaybackVolumeJoined

0 if control is separated per channel, 1 if control acts on all channels together

Definition at line 143 of file MixerElement.H.

◆ index

unsigned int ALSA::MixerElement::index

The mixer element index.

Definition at line 140 of file MixerElement.H.

◆ name

std::string ALSA::MixerElement::name

The mixer element name.

Definition at line 138 of file MixerElement.H.

◆ playbackVolMax

long ALSA::MixerElement::playbackVolMax

Definition at line 152 of file MixerElement.H.

◆ playbackVolMaxDB

double ALSA::MixerElement::playbackVolMaxDB

Definition at line 154 of file MixerElement.H.

◆ playbackVolMin

long ALSA::MixerElement::playbackVolMin

Definition at line 153 of file MixerElement.H.

◆ playbackVolMinDB

double ALSA::MixerElement::playbackVolMinDB

Definition at line 155 of file MixerElement.H.

◆ playbackVolumes

std::vector<ChannelPlaybackElement> ALSA::MixerElement::playbackVolumes

Volume setting for each playback channel in this mixer element.

Definition at line 161 of file MixerElement.H.

The documentation for this class was generated from the following file:

/tmp/gtkiostream/include/ALSA/MixerElement.H

Public Member Functions

Public Attributes

Friends

Detailed Description

Constructor & Destructor Documentation

◆ MixerElement() [1/2]

◆ MixerElement() [2/2]

◆ ~MixerElement()

Member Function Documentation

◆ setCaptureSwitch()

◆ setCaptureVol() [1/2]

◆ setCaptureVol() [2/2]

◆ setCaptureVolDB() [1/2]

◆ setCaptureVolDB() [2/2]

◆ setPlaybackSwitch()

◆ setPlaybackVol() [1/2]

◆ setPlaybackVol() [2/2]

◆ setPlaybackVolDB() [1/2]

◆ setPlaybackVolDB() [2/2]

Friends And Related Function Documentation

◆ operator<<

Member Data Documentation

◆ captureVolMax

◆ captureVolMaxDB

◆ captureVolMin

◆ captureVolMinDB

◆ captureVolumes

◆ elem

◆ hasCaptureSwitch

◆ hasCaptureSwitchExclusive

◆ hasCaptureSwitchJoined

◆ hasCaptureVolume

◆ hasCaptureVolumeJoined

◆ hasCommonSwitch

◆ hasCommonVolume

◆ hasPlaybackSwitch

◆ hasPlaybackSwitchJoined

◆ hasPlaybackVolume

◆ hasPlaybackVolumeJoined

◆ index

◆ name

◆ playbackVolMax

◆ playbackVolMaxDB

◆ playbackVolMin

◆ playbackVolMinDB

◆ playbackVolumes