Sends a hardware-specific command to the driver.
- macOS 10.2+
An opaque reference handle to an effect object. This is obtained from a previous call to FFDeviceCreateEffect.
Pointer to status flags for the effect. The value can be 0 or one or more of the following constants:
The effect is playing.
The effect is emulated.
If the method succeeds, the return value is FF_OK. If the method fails, the return value can be one of the following error values: