[pulseaudio-tickets] [Bug 77499] One should be able to modify the volume when audio is mute

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=77499

--- Comment #3 from Raymond <superquad.vortex2 at gmail.com> ---
typedef uint32_t pa_volume_t


Volume specification: PA_VOLUME_MUTED: silence; < PA_VOLUME_NORM: decreased
volume; PA_VOLUME_NORM: normal volume; 

PA_VOLUME_NORM: increased volume


Sinks, sources, sink inputs and samples can all have their own volumes

the pulseaudio internal only have volumes but does not have any independent
mute switch

especially the internal working format is float 

0.0 mean mute 1.0 mean 0dB

While most sound cards volume control's  min volume are not -inf dB but mute
switch is equivalent to -inf dB


for 16bit audio sound card

the  range of volume from -inf dB to -96dB is not controlled by hardware

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