Retrieves the factors that affect the calculations of 3D sound.
|distf||The distance factor... NULL = don't retrieve it.
|rollf||The rolloff factor... NULL = don't retrieve it.
|doppf||The doppler factor... NULL = don't retrieve it.
If successful, then TRUE is returned, else FALSE is returned. Use BASS_ErrorGetCode to get the error code.
|BASS_ERROR_INIT||BASS_Init has not been successfully called.
|BASS_ERROR_NO3D||The device was not initialized with 3D support.|
When using multiple devices, the current thread's device setting (as set with BASS_SetDevice) determines which device this function call applies to.