Soundctrl() - VeriFone MX800 series Programmer's Manual

soundCtrl()

The VeriFone supplied library (libvfisvc.so) contains support for controlling
the audio volume, bass, and treble via the following API:
Prototype
int soundCtrl(int volume, int bass, int treble)
Parameters
Accepted values: 0-100
volume
0
100
Accepted values: 50-100
bass
Accepted values: 50-100
treble
Return Values
0 No error
Less than 0 Error occurred
Sound off
Maximum volume
X
M 800 S
D D
EVICE RIVERS
soundCtrl()
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ERIES ROGRAMMERS UIDE
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