To add Audio/Video Group Conference support in your application,

Include the class <MessageSDKFramework/GroupAVChat.h> in the .h file of your class.

All the method calls will invoke their respective callback blocks as defined below.

1. Initialize the GroupAVChat object:

GroupAVChat *groupAVChat = [[GroupAVChat alloc] init];

2. Send conference call request
Send audio/video conference request to all the users of particular chatroom. (Specify chatroomID and chatroomID cannot be nil or empty)

- (void)sendConferenceRequest:(NSString *)chatroomID
                      success:(void (^)(NSDictionary *))success
                      failure:(void (^)(NSError *))failure;

Return type: void
Callback Blocks:
(i). (void(^)(NSDictionary *response))response
Invocation: After audio/video conference request is sent successfully.
Response: NSDictionary containing success message
Eg:

{
    callID = ec6a50f23eed63dc4cd1bf1498d9c4aa;
    chatroomid = 5;
    status = "Conference request sent successfully";
}

(ii). (void(^)(NSError *error))failure
Invocation: If an error occurs while sending audio/video conference request
Response: NSError containing error code and message
Usage:

[groupAVChat sendConferenceRequest:@"5" success:^(NSDictionary *response) {
    } failure:^(NSError *error) {
    }];

3. Join conference
Join the Audio/Video conference started by another member of the current chatroom. HAS STARTED A VIDEO CONVERSATION message is received in the onAVChatMessageReceived callback block. (Ensure that callID specified should be same as the callID received in HAS STARTED A VIDEO CONVERSATION message and also callID cannot be nil or empty)

- (void)joinConference:(NSString *)callID
               success:(void (^)(NSDictionary *response))success
               failure:(void (^)(NSError *error))failure;

Return type: void
Callback Blocks:
(i). (void(^)(NSDictionary *response))response
Invocation: After joining the audio/video conference successfully
Response: NSDictionary containing success message
Eg:

{
   "status" = "Conference joined successfully";
}

(ii). (void(^)(NSError *error))failure
Invocation: If an error occurs while joining audio/video conference.
Response: NSError containing error code and message
Usage:

[groupAVChat joinConference:@"ec6a50f23eed63dc4cd1bf1498d9c4aa" success:^(NSDictionary *response) {
        } failure:^(NSError *error) {
        }];

4. Start Audio/Video call
Once you have sent the request for conference or made join conference request successfully then you can start the conference. Start a conference call within the container view. (Ensure that callID specified here should be the same while sending/accepting a conference request and also callID cannot be nil or empty)

- (void)startConferenceInContainer:(NSString *)callID
                     containerView:(UIView *)container
                changeInAudioRoute:(void(^)(NSDictionary *audioRouteInformation))audioRouteInformation
                           failure:(void (^)(NSError *error))failure;

Return type: void
Callback Blocks:
(i). (void(^)(NSError *error))failure
Invocation: If an error occurs while starting audio/video conference
Response: NSError containing error code and message
Usage:

[groupAVChat startConferenceInContainer:@"ec6a50f23eed63dc4cd1bf1498d9c4aa" containerView:containerView changeInAudioRoute:^(NSDictionary *audioRouteInformation) {
    } failure:^(NSError *error) {
    }];

5. End/Leave conference call
You can leave the conference by calling endConference() function. The conference will end when all the members leave the conference. Specify chatroomID & callID. (Ensure that callID specified should be same as given when starting the audio-video call and also callID cannot be nil or empty)

- (void)endConference:(NSString *)chatroomID
               callID:(NSString *)callID
              success:(void (^)(NSDictionary *response))success
              failure:(void (^)(NSError *error))failure;

Return type: void
Callback Blocks:
(i). (void(^)(NSDictionary *response))response
Invocation: After ending audio video call successfully
Response: NSDictionary containing success message.
Eg:

 {  
   "status"="Conference ended successfully";
}

(ii). (void(^)(NSError *error))failure
Invocation: If an error occurs while ending audio/video conference request
Response: NSError containing error code and message
Usage:

[groupAVChat endConference:@"5" callID:@"ec6a50f23eed63dc4cd1bf1498d9c4aa" success:^(NSDictionary *response) {
        } failure:^(NSError *error) {
        }];

6. Toggle Audio to ON(YES) or OFF(NO) state

- (void)toggleAudio:(BOOL)audioControlFlag;

Return type: void
Usage:

[groupAVChat toggleAudio:YES];

7. Toggle Video to ON(YES) or OFF(NO) state

- (void)toggleVideo:(BOOL)videoControlFlag;

Return type: void
Usage:

[groupAVChat toggleVideo:YES];

8. Switch between front and rear camera in Group Video call

- (void)switchCamera;

Return type: void
Usage:

[groupAVChat switchCamera];

Please refer ‎error codes for failure responses.