VPU_CMD_ID_SNAPSHOT
ret = vpu_session_send_cmd(inst, VPU_CMD_ID_SNAPSHOT, NULL);
case VPU_CMD_ID_SNAPSHOT: return "snapshot";
{VPU_CMD_ID_SNAPSHOT, VID_API_CMD_SNAPSHOT},
{VPU_CMD_ID_SNAPSHOT, GTB_ENC_CMD_SNAPSHOT},