Sets the direct input monitoring state.
|input||The input to set the monitoring state of... -1 = all.
|output||The suggested output for the monitoring.
|gain||Suggested output gain... ranging 0 (silent) - 0x7FFFFFFF (+12 dB), 0x20000000 = 0 dB.
|state||Monitoring state... 0 = off, 1 = on. Other settings may be possible depending on the drivers.
|pan||Suggested output pan... 0 = left, 0x7FFFFFFF = right.
If successful, TRUE is returned, else FALSE is returned. Use BASS_ASIO_ErrorGetCode to get the error code.
|BASS_ERROR_INIT||BASS_ASIO_Init has not been successfully called.
|BASS_ERROR_UNKNOWN||Some other mystery problem!
Not all devices/drivers support monitoring. The output, gain and pan settings are also just suggestions, and may be ignored by the device/driver.