Cancel a synchronization
#include <mmsync/mmsyncclient.h>
int mm_sync_cancel( mmsync_hdl_t *hdl, unsigned op_id, uint32_t flags )
Cancel a synchronization. You can do this if a device is no longer of interest or if playback is requested from a device that's being synchronized and that has problems with simultaneous playback and synchronization.
0 on success, -1 on failure.