Phonon::VolumeFaderEffect
#include <phonon/VolumeFaderEffect>
Public Types | |
enum | FadeCurve { Fade3Decibel , Fade6Decibel , Fade9Decibel , Fade12Decibel } |
Properties | |
FadeCurve | fadeCurve |
float | volume |
double | volumeDecibel |
Properties inherited from QObject | |
objectName | |
Public Slots | |
void | fadeIn (int fadeTime) |
void | fadeOut (int fadeTime) |
void | fadeTo (float volume, int fadeTime) |
void | setFadeCurve (FadeCurve curve) |
void | setVolume (float volume) |
void | setVolumeDecibel (double volumeDecibel) |
Detailed Description
Audio effect to gradually fade the audio volume.
This effect differs from gradually changing the output volume in that a dedicated effect can change the volume in the smallest possible steps while every other volume control will make more or less noticeable steps.
- See also
- AudioOutput::volume
Definition at line 48 of file volumefadereffect.h.
Member Enumeration Documentation
◆ FadeCurve
Determines the curve of the volume change.
Definition at line 87 of file volumefadereffect.h.
Property Documentation
◆ fadeCurve
|
readwrite |
◆ volume
|
readwrite |
This is the current volume of the output as voltage factor.
Setting this property changes the volume immediately.
1.0 means 100%, 0.5 means 50% voltage/25% power, 0.0 means 0%
- See also
- volumeDecibel
Definition at line 62 of file volumefadereffect.h.
◆ volumeDecibel
|
readwrite |
This is the current volume of the output in decibel.
Setting this property changes the volume immediately.
0 dB means no change in volume, -6dB means an attenuation of the voltage to 50% and an attenuation of the power to 25%, -inf dB means silence.
- See also
- volume
Definition at line 73 of file volumefadereffect.h.
Member Function Documentation
◆ fadeIn
|
slot |
Tells the Fader to change the volume from the current volume to 100% in fadeTime
milliseconds.
Short for fadeTo
(1.0, fadeTime).
- Parameters
-
fadeTime the fade duration in milliseconds
Definition at line 60 of file volumefadereffect.cpp.
◆ fadeOut
|
slot |
Tells the Fader to change the volume from the current volume to 0% in fadeTime
milliseconds.
Short for fadeTo
(0.0, fadeTime).
- Parameters
-
fadeTime the fade duration in milliseconds
- See also
- fadeTo
Definition at line 65 of file volumefadereffect.cpp.
◆ fadeTo
|
slot |
Tells the Fader to change the volume from the current value to volume
in fadeTime
milliseconds.
Definition at line 70 of file volumefadereffect.cpp.
◆ setVolumeDecibel
|
slot |
Definition at line 54 of file volumefadereffect.cpp.
◆ volumeDecibel()
double Phonon::VolumeFaderEffect::volumeDecibel | ( | ) | const |
Definition at line 49 of file volumefadereffect.cpp.
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