set_instance_state
set_instance_state(inst, VPU_INST_STATE_INIT_SEQ);
set_instance_state(inst, VPU_INST_STATE_PIC_RUN);
set_instance_state(inst, VPU_INST_STATE_STOP);
ret = set_instance_state(inst, VPU_INST_STATE_STOP);
set_instance_state(inst, VPU_INST_STATE_STOP);