Developer:Davaar:VolumeService
Contents
Architecture Overview
The Volume service
Volume
Volume can be set to an absolute value or incremented/decremented in single steps. Volume can be adjusted in the range 0-100%. A setting of 80 represents 0dB (unity gain) with reference to the volume of the input signal. Each step adjustment in the volume represents a 1dB change (79=-1dB, 78=-2dB, 100=+20dB).
Volume Limit
The VolumeLimit parameter allows the master volume limit to be reduced. Any attempt to set the master volume above the VolumeLimit will reset the volume to the value of the VolumeLimit. Whenever the VolumeLimit is adjusted, the current master volume is checked and automatically reduced if necessary.
Balance
Balance defines the difference, in dBs, between any left and right channel outputs. Balance can be set to an absolute value or incremented/decremented in single steps. A setting of +1 will apply a -0.5dB offset to all left channels and +0.5dB offset to all right channels.
Fade
Mute
Characterstics
VolumeMax
VolumeUnity
VolumeSteps
VolumeMilliDbPerStep
BalanceMax
FadeMax
Volume Actions
Volume
The Volume action reports the current master volume setting of the product.
SetVolume
The SetVolume action provides a means of setting the Volume to a specific value. The minimum value that can be applied is zero. The maximum value that can be applied is determined by the VolumeMax and VolumeLimit settings. If an attempt is made to set the Volume above VolumeMax, an error will be reported. If an attempt is made to set the Volume above VolumeLimit, the Volume will be set to the VolumLimit value and no error will be repoprted.
Volume Inc
The VolumeInc action provides a means of increasing the Volume by 1.
Volume Dec
The VolumeDec action provides a means of decreasing the Volume by 1.
VolumeLimit
The VolumeLimit action reports the current VolumeLimit setting.
Balance
The Balance action reports the current Balance setting.
SetBalance
The SetBalance action provides a means of setting the Balance to a specific value.
BalanceInc
The BalanceInc action provides a means of increasing the Balance by 1.
BalanceDec
The BalanceDec action provides a means of decreasing the Balance by 1.
Fade
The Fade action reports the current Fade setting of the product.
SetFade
The SetFade action provides a means of setting the Fade to a specific value.
FadeInc
The FadeIncaction provides a means of increasing the Fade by 1.
FadeDec
The FadeDec action provides a means of decreasing the Fade by 1.
Mute
The Mute action reports the current Mute state of the product.
SetMute
The SetMute action provides a means of setting the Mute state.
Characteristics
The Characteristics action returns all six characteristic values of the product.
API Reference
Volume Service Description (XML)
Migration Guide
None.
Upnp Action Name Changes
None.
Obsolete Functions
None.
