## MMPM/2 Device Driver Reference

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### DDCMD_CONTROL Parameter - pParmIn

pParmIn (PDDCMDCONTROL) A pointer to a DDCMDCONTROL data structure. The pParm and ulParmSize fields refer to the CONTROL_PARM data structure. Values for ulCmd include:

DDCMD_START Start a device.

DDCMD_STOP Stop a device and return current position.

DDCMD_PAUSE Pause a device and return current position.

DDCMD_RESUME Resume a paused device

DDCMD_ENABLE_EVENT Enable event detection.

DDCMD_DISABLE_EVENT Disable event detection in the device driver.

DDCMD_PAUSE_TIME Pause time but do not pause stream.

DDCMD_RESUME_TIME Resume time.