Video Doorbell

Overview

When the app is launched, if the device has been bound with a home and is online, the app can receive calls from the doorbell by listening for MQTT messages. The app can answer, hang up, or decline doorbell calls over MQTT. The Smart Camera SDK encapsulates this process to help you integrate with the doorbell service at a low cost more easily.

When the doorbell rings, the Smart Camera SDK will notify the app through a doorbell call listener. The app can then answer, hang up, or decline doorbell calls.

When MQTT disconnects, for example when the app quits or is running in the background, users can be notified of doorbell calls through push notifications. However, when users tap the push notification, the Smart Camera SDK cannot detect such call events. To address this issue, when users tap on a doorbell call push notification, manually include the call in the Smart Camera SDK management scope. See Process doorbell calls sent from other sources for details.

Other solutions

The doorbell product (type is ac_doorbell) uses the solution mentioned above. However, not all doorbell devices operate on the same call logic as mentioned above.

Using a doorbell with image (type is doorbell) as an example, the app receives notifications for the doorbell call via MQTT. Actions like answering, hanging up, and declining are all performed through DP. You can register doorbell call listener to monitor calls. Use device control methods to answer, hang up, and decline a doorbell call.

If lock devices manage answering, hanging up, and declining doorbell calls through DPs, the doorbell service encapsulation in the Smart Camera SDK is inapplicable.

Get doorbell call management class

Example

Objective-C:

ThingSmartDoorBellManager *manager = [ThingSmartDoorBellManager sharedInstance];

Swift:

let manager = ThingSmartDoorBellManager.sharedInstance()

Doorbell call models

Doorbell calls are encapsulated by the model class ThingSmartDoorBellCallModel. This class is used to store information about doorbell calls and maintain the doorbell call status. Each doorbell ring event has its own ThingSmartDoorBellCallModel model, identified by a unique messageId.

Parameter	Description
type	The type of doorbell call. Valid values: doorbell ac_doorbell Custom type
devId	The device ID.
messageId	The unique identifier of the doorbell call message.
time	The Unix timestamp when the doorbell call is triggered, in seconds.
answeredBySelf	Indicates whether the device owner has answered the doorbell call.
answeredByOther	Indicates whether another member has answered the doorbell call.
canceled	Indicates whether the doorbell call was canceled.

Get doorbell call models

To get the status of a doorbell call, use the model ThingSmartDoorBellCallModel to return the target instance of ThingSmartDoorBellCallModel.

API description

- (ThingSmartDoorBellCallModel *)callModelWithMessageId:(NSString *)messageId;

Parameters

Parameter	Description
messageId	The unique identifier of the doorbell call message.

Register doorbell call listener

The app process must be active before the listener can work as expected. If the app process runs in the background or is terminated, the listener will not work.

API description

- (void)addObserver:(id<ThingSmartDoorBellObserver>)observer;

Parameters

Parameter	Description
ThingSmartDoorBellObserver	The doorbell call listener.

ThingSmartDoorBellObserver

The doorbell call listener involves the callbacks throughout the life cycle of doorbell calls. The following table describes these callbacks.

API name	Parameter list	Return value	Description
didReceivedFromDevice	ThingSmartDoorBellCallModel, ThingSmartDeviceModel	void	The doorbell call event from the device is received.
doorBellCallDidHangUp	ThingSmartDoorBellCallModel	void	The doorbell call was hung up on the device.
doorBellCallDidAnsweredByOther	ThingSmartDoorBellCallModel	void	Another member has answered the doorbell call. The service layer determines whether to automatically cancel or hold the call. To decline the call, call refuseDoorBellCall to end the call. To hold the call, the device owner can pick up and listen to the ongoing call that is being answered by another member but cannot talk through the call.
doorBellCallDidAnswered	ThingSmartDoorBellCallModel	void	The doorbell call was answered.
doorBellCallDidCanceled	ThingSmartDoorBellCallModel, BOOL	void	The doorbell call was canceled. The parameter isTimeOut indicates whether the call is automatically canceled due to timeout or manually canceled on the device.
doorBellCallDidRefuse	ThingSmartDoorBellCallModel	void	The doorbell call was declined.

Example

Objective-C:

@interface CameraDoorbellManager ()<ThingSmartDoorBellObserver>
@property (nonatomic, copy) NSString *messageId;
@end

@implementation CameraDoorbellManager

- (void)doorBellCall:(ThingSmartDoorBellCallModel *)callModel didReceivedFromDevice:(ThingSmartDeviceModel *)deviceModel {
    self.messageId = callModel.messageId;
}

- (void)doorBellCallDidRefuse:(ThingSmartDoorBellCallModel *)callModel {

}

- (void)doorBellCallDidHangUp:(ThingSmartDoorBellCallModel *)callModel {

}

- (void)doorBellCallDidAnsweredByOther:(ThingSmartDoorBellCallModel *)callModel {

}

- (void)doorBellCallDidAnswered:(ThingSmartDoorBellCallModel *)callModel {

}

- (void)doorBellCallDidCanceled:(ThingSmartDoorBellCallModel *)callModel timeOut:(BOOL)isTimeOut {

}

@end

Swift:

class DoorbellManager: NSObject {
    let manager = ThingSmartDoorBellManager.sharedInstance()
    var messageId:String = ""
}

extension DoorbellManager:ThingSmartDoorBellObserver {
    func doorBellCall(_ callModel: ThingSmartDoorBellCallModel!, didReceivedFromDevice deviceModel: ThingSmartDeviceModel!) {
        messageId = callModel.messageId
    }

    func doorBellCallDidRefuse(_ callModel: ThingSmartDoorBellCallModel!) {

    }

    func doorBellCallDidHangUp(_ callModel: ThingSmartDoorBellCallModel!) {

    }

    func doorBellCallDidAnswered(byOther callModel: ThingSmartDoorBellCallModel!) {

    }

    func doorBellCallDidCanceled(_ callModel: ThingSmartDoorBellCallModel!, timeOut isTimeOut: Bool) {

    }
}

Remove doorbell call listener

Remove a doorbell call listener if it is not required.

API description

- (void)removeObserver:(id<ThingSmartDoorBellObserver>)observer;

Example

Objective-C:

[[ThingSmartDoorBellManager sharedInstance] removeObserver:self];

Swift:

ThingSmartDoorBellManager.sharedInstance()?.remove(self)

Ignore subsequent calls from a specific doorbell

Specify whether to automatically ignore subsequent calls from a specific doorbell when users are already on a call from another doorbell.

Property description

@property (nonatomic, assign) BOOL ignoreWhenCalling;

Property	Description
ignoreWhenCalling	YES: Ignore NO: Not ignore Default value: YES.

Set timeout for all doorbell calls

Set the timeout for doorbell calls. If a doorbell call is not answered within the specified period, the callback doorBellCallDidCanceled will be invoked to send a notification and end the call.

Property description

@property (nonatomic, assign) NSInteger doorbellRingTimeOut;

Property	Description
doorbellRingTimeOut	The timeout for doorbell calls, in seconds, defaulting to 25.

Set timeout for a specific doorbell call

Set the timeout for doorbell calls by device ID. If a doorbell call is not answered within the specified period, the callback doorBellCallDidCanceled will be invoked to send a notification and end the call.

Property description

@property (nonatomic, weak) id<ThingSmartDoorBellConfigDataSource> doorBellConfigDataSource;

Parameters

Parameter	Description
ThingSmartDoorBellConfigDataSource	The data source for the doorbell settings.

ThingSmartDoorBellConfigDataSource

The data source for the doorbell settings is shown below.

API name	Parameter list	Return value	Description
doorbellRingTimeOut	NSInteger, NSString *	NSInteger	Set the timeout for doorbell calls by device ID.

Answer doorbell call

Answer a doorbell call when it rings. The call may fail if it was answered, canceled, or for other reasons. In case of failure, the reason is returned as an error message. For more information, see Error codes.

API description

- (ThingDoorBellError)answerDoorBellCall:(NSString *)messageId;

Example

Objective-C:

[[ThingSmartDoorBellManager sharedInstance] answerDoorBellCall:self.messageId];

Swift:

ThingSmartDoorBellManager.sharedInstance()?.answerDoorBellCall(messageId)

Decline doorbell call

Decline a doorbell call when it rings.

API description

- (void)refuseDoorBellCall:(NSString *)messageId;

Example

Objective-C:

[[ThingSmartDoorBellManager sharedInstance] refuseDoorBellCall:self.messageId];

Swift:

ThingSmartDoorBellManager.sharedInstance()?.refuseDoorBellCall(messageId)

Hang up doorbell call

Hang up a doorbell call after it is received. The call might fail to be hung up if it goes unanswered or for other reasons. In case of failure, the reason is returned as an error message. For more information, see Error codes.

API description

- (ThingDoorBellError)hangupDoorBellCall:(NSString *)messageId;

Example

Objective-C:

[[ThingSmartDoorBellManager sharedInstance] hangupDoorBellCall:self.messageId];

Swift:

ThingSmartDoorBellManager.sharedInstance()?.hangupDoorBellCall(messageId)

Process doorbell calls sent from other sources

Handle the doorbell call received via push notification instead of MQTT. Generate a doorbell call model based on the passed parameters to implement operations such as answering, hanging up, or declining the call.

API description

- (void)generateCall:(NSDictionary *)params;

Parameters

Parameter	Description
params	The call message data. See Demo for the push message details.

Description of key-value pairs in params

key	value
devId	The device ID.
cid	The nodeId of the device.
edata	The message ID.
eType	The type of the received call message.
time	The timestamp of the received call message.

Example

For more information, see Demo.

Error code

For more information, see SDK Error Codes.

Enum value	Error code	Description
ThingDoorBellError_NoError	0	The operation is successful without errors.
ThingDoorBellError_CallFailed	-2300	Failed to process the call. Possible reason: The call event ended. For example, it was hung up or declined. Same reason as that of ThingDoorBellError_NotSupport.
ThingDoorBellError_AnsweredByOther	-2301	The doorbell call is being answered by another user.
ThingDoorBellError_DidCanceled	-2302	The doorbell call was canceled on the device.
ThingDoorBellError_TimeOut	-2303	The doorbell call timed out.
ThingDoorBellError_AnsweredBySelf	-2304	The doorbell call was answered.
ThingDoorBellError_NotAnswered	-2305	The doorbell call was hung up, without being answered.
ThingDoorBellError_NotSupport	-2306	The device type such as doorbell is not supported.

Doorbell audio resource file

To implement the features of the low-power doorbell, you must download the default resource file resources.zip, decompress it, and then add the resources to your project. You can also add a custom audio file with the default file name.