Sensoray 2224 Windows - Manual (Page 28)

int val,
HANDLE hdev
);
Used for S2226_StartDecode only. Set the audio DAC volume.
Parameters
val
0-127 (steps of -0.5 dB, 0=0Db=maximum volume, 127=-63.5dB).
hdev
handle to device (obtained from S2226_OpenBoard).
Returns
0 on success, negative value if error (see mid2226types.h for error codes list).
MID2226_API int S2226_GetAudioOutputVol(
int *val,
HANDLE hdev
);
Retrieves audio output volume setting.
Parameters
val
0-127 (steps of -0.5 dB, 0=0Db=maximum volume, 127=-63.5dB).
hdev
handle to device (obtained from S2226_OpenBoard).
Returns
0 on success, negative value if error (see mid2226types.h for error codes list).
MID2226_API int S2226_SetAudioOutputMono(
int extra_gain,
HANDLE hdev
);
Sets extra gain on the audio mono channel.
28