Magic Remote

Service URI - luna://com.webos.service.mrcu

Provides methods related to the magic remote sensor. This is used to check the sensor data from the magic remote or to stop receiving sensor data from the magic remote.

Methods

Method	Description	Supported in Emulator
sensor/getSensorData	Subscribes the sensor data from the magic remote.	No
sensor/resetQuaternion	Resets the magic remote's quaternion data.	No

sensor/getSensorData

Description

Subscribes the sensor data from the magic remote. The data includes point coordinates, gyroscope sensor, accelerometer sensor and quaternion value. You can get the sensor data by subscribing a callback function with specified intervals.

Parameters

Name	Required	Type	Description
callbackInterval	Required	Number	Callback interval: 1: 100 pkt/sec 2: 50 pkt/sec 3: 33 pkt/sec 4: 10 pkt/sec
subscribe	Required	Boolean	Flag that decides whether to subscribe or not. true: Subscribe false: Do not subscribe. Call the method only once. (Default) Caution Do not set this to false, one-time calling does not work correctly now.

Note

In webOS TV 1.x, sensor/getSensorData method requires more parameters, which are sleep and autoAlign. If you use sensor/getSensorData method in webOS TV 1.x, set sleep and autoAlign parameters as below:

sleep: true
autoAlign: false

You can find out webOS TV version that user uses via getSystemInfo() method.

Call returns

Name	Required	Type	Description
returnValue	Required	Boolean	Flag that indicates success/failure of the request. true: Success false: Failure
errorCode	Optional	Number	errorCode contains the error code if the method fails. The method will return errorCode only if it fails. See the Error Codes Reference of this method for more details.
errorText	Optional	String	errorText contains the error text if the method fails. The method will return errorText only if it fails. See the Error Codes Reference of this method for more details.
subscribed	Optional	Boolean	Flag that indicates whether the subscription is enabled or not. true: Enabled false: Disabled

Remarks

Subscription is disabled if this interface returns false. So, to keep the subscription, subscribe the sensor data again. This service provides "subscribe " for the subscription.

Error reference

Error Code	Error Text
1001	Magic remote is not ready
1002	Undefined callback interval
1003	Subscription add fail
1004	invalid parameter

Subscription Returns

Name	Required	Type	Description
returnValue	Required	Boolean	Flag that indicates success/failure of the request. true: Success false: Failure
deviceId	Required	String	Magic remote device ID
coordinate	Required	Object	Coordinates information object
gyroscope	Required	Object	Gyroscope sensor information object
acceleration	Required	Object	Accelerometer sensor information object
quaternion	Required	Object	Quaternion sensor information object

Example

var subscriptionHandle;

var webOSTVVersion = "2.0.0";

// Get webOS TV version
var request = webOS.service.request("luna://com.webos.service.tv.systemproperty", {
    method: "getSystemInfo",
    parameters: { "keys":["sdkVersion"] },
    onSuccess: function (inResponse) {
		webOSTVVersion = inResponse.sdkVersion;
		console.log("webOS TV Version: " + inResponse.sdkVersion);
		//To-Do something
		return true;
    },
	onFailure: function (inError) {
		console.log("Failed to get webOS TV Version: " + inResponse.errorText);
		console.log("[" + inError.errorCode + "]: " + inError.errorText);
		// To-Do something
		return;
	}
});

// Set parameters by webOS TV version
var options;
if( webOSTVVersion == "2.0.0") {
    options.callbackInterval = 1;
    options.subscribe = true;
} else {
    options.callbackInterval = 1;
    options.subscribe = true;
    options.sleep = true;
    options.autoAlign = false;
}

// Call sensor/getSensorData with subscription
subscriptionHandle = webOS.service.request("luna://com.webos.service.mrcu", {
    method: "sensor/getSensorData",
    parameters: options,
    onSuccess: function (inResponse) {
		if (inResponse.subscribed == true) {
            console.log("Subscription Enabled");
            // To-Do something
        }

        console.log("Result: " + JSON.stringify(inResponse));
		// To-Do something
		return true;
    },
	onFailure: function (inError) {
		console.log("Failed to get sensor data");
		console.log("[" + inError.errorCode + "]: " + inError.errorText);
		// To-Do something
		return;
	}
);

...
// If you need to unsubscribe the data, use cancel() method as below
subscriptionHandle.cancel();

Return example

// When subscription enabled
{
  "subscribed": true,
  "returnValue": true
}

// Subscription return
{
  "deviceId": 0,
  "coordinate": {
      "x": 1101,
      "y": 518
  },
  "gyroscope": {
      "z": -1.682723,
      "x": 0.304100,
      "y": -0.582472
  },
  "acceleration": {
      "z": 12.035406,
      "x": 9.713932,
      "y": 5.446675
  },
  "returnValue": true,
  "quaternion": {
      "q0": 0.042376,
      "q1": 0.088355,
      "q2": 0.937461,
      "q3": 0.334014
  }
}

sensor/resetQuaternion

Description

Resets the quaternion sensor of the magic remote. Sometimes you need to reset the sensor before the user action, such as when a game starts or magic remote wakes up from sleep mode.

Parameters

None

Call returns

Name	Required	Type	Description
returnValue	Required	Boolean	Flag that indicates success/failure of the request. true: Success false: Failure
errorCode	Optional	Number	errorCode contains the error code if the method fails. The method will return errorCode only if it fails. See the Error Codes Reference of this method for more details.
errorText	Optional	String	errorText contains the error text if the method fails. The method will return errorText only if it fails. See the Error Codes Reference of this method for more details.

Error reference

Error Code	Error Text
1001	Magic remote is not ready
1003	MotionEngine is not ready
1004	Device is no added to the MotionEngine

Note

MotionEngine calculates numeric data from the sensor data of magic remote.

Example

var request = webOS.service.request('luna://com.webos.service.mrcu', {
  method: 'sensor/resetQuaternion',
  onSuccess: function (inResponse) {
    console.log('Succeeded to reset the quaternion sensor');
    // To-Do something
    return true;
  },
  onFailure: function (inError) {
    console.log('Failed to reset sensor: ' + inResponse.errorText);
    console.log('[' + inError.errorCode + ']: ' + inError.errorText);
    // To-Do something
    return;
  },
});

Object

coordinate object

The object that holds the coordinates information from the magic remote.

{
  "x": number,
  "y": number
}

Name	Required	Type	Description
x	Required	number	X coordinate
y	Required	number	Y coordinate

gyroscope object

The object that holds the gyroscope sensor information from the magic remote.

{
  "x": number,
  "y": number,
  "z": number
}

Name	Required	Type	Description
x	Required	number	X-axis value
y	Required	number	Y-axis value
z	Required	number	Z-axis value

acceleration object

Object that holds the acceleration sensor information from magic remote.


{
  "x": number,
  "y": number,
  "z": number
}

Name	Required	Type	Description
x	Required	number	X-axis value
y	Required	number	Y-axis value
z	Required	number	Z-axis value

quaternion object

The object that holds the quaternion sensor information from the magic remote.

{
    "q0": number,
    "q1": number,
    "q2": number,
    "q3": number
}

Name	Required	Type	Description
q0	Required	number	x value
q1	Required	number	y value
q2	Required	number	z value
q3	Required	number	w value

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