/* capabilities */
STREAM_CAN_SEEK, /**< arg1= bool * res=cannot fail*/
STREAM_CAN_FASTSEEK, /**< arg1= bool * res=cannot fail*/
+ STREAM_CAN_PAUSE, /**< arg1= bool * res=cannot fail*/
+ STREAM_CAN_CONTROL_PACE, /**< arg1= bool * res=cannot fail*/
/* */
STREAM_SET_POSITION, /**< arg1= uint64_t res=can fail */