This document describes how to access and debug the GME APIs for Windows.

Note

This document applies to GME SDK version 2.8.

Key Considerations for Using GME

GME divides into two services: voice chat service and voice messaging and speech-to-text service.

Important APIs

Important API	Description
Init	Initializes GME
Poll	Triggers event callback
EnterRoom	Enters room (voice chat)
EnableMic	Enables mic (voice chat)
EnableSpeaker	Enables speaker (voice chat)
StartRecordingWithStreamingRecognition	Stream records audio and converts to text (voice messaging and speech-to-text)

Important notes

• Configure your project before using GME; otherwise, the SDK will not take effect.
• After a GME API is called successfully, AV_OK will be returned with the value being 0.
• GME APIs should be called in the same thread.
• The Poll API should be called periodically for GME to trigger event callbacks.
• For detailed error codes, please see Error Codes.

C++ classes

Class	Description
ITMGContext	Key APIs
ITMGRoom	Room APIs
ITMGRoomManager	Room management APIs
ITMGAudioCtrl	Audio APIs
ITMGAudioEffectCtrl	Sound effect and accompaniment APIs
ITMGPTT	Voice messaging and speech-to-text APIs

Key APIs

Before the initialization, the SDK is in the uninitialized status, and you need to initialize it through the Init API before you can use the voice chat and voice messaging and speech-to-text services. If you switch the account, please call UnInit to uninitialize the SDK.

If you have any questions when using the service, please see General.

API	Description
Init	Initializes GME
Poll	Triggers event callback
Pause	Pauses the system
Resume	Resumes the system
Uninit	Uninitializes GME

Importing the header file

#include "auth_buffer.h"
#include "tmg_sdk.h"
#include "AdvanceHeaders/tmg_sdk_adv.h"
#include <vector>

Callback

Setting callback sample

// When initializing the SDK
m_pTmgContext = ITMGContextGetInstance();
m_pTmgContext->SetTMGDelegate(this);
// In the destructor
CTMGSDK_For_AudioDlg::~CTMGSDK_For_AudioDlg()
{
    ITMGContextGetInstance()->SetTMGDelegate(NULL);
}

Message delivery

The API class uses the Delegate method to send callback notifications to the application. ITMG_MAIN_EVENT_TYPE indicates the message type. The data on Windows is in json string format. For the key-value pairs, please see the relevant documentation.

// Declaration in the header file
virtual void OnEvent(ITMG_MAIN_EVENT_TYPE eventType,const char* data);
// Sample code
void CTMGSDK_For_AudioDlg::OnEvent(ITMG_MAIN_EVENT_TYPE eventType, const char* data)
{
    switch(eventType)
    {
    case ITMG_MAIN_EVENT_TYPE_XXXX_XXXX:
        {
            // Process the callback
        }
        break;
    }
}

Getting singleton

The GME SDK is provided in the form of a singleton, all calls begin with ITMGContext, and callbacks are passed to the application through ITMGDelegate, which should be configured first.

Sample code

ITMGContext* m_pTmgContext;
m_pTmgContext->Init(AppID, OpenID);

Initializing the SDK

• This API is used to initialize the GME service. It is recommended to call it when initializing the application.
• The openID uniquely identifies a user with the rules stipulated by the application developer and must be greater than 10,000 and unique in the application (currently, only INT64 is supported).

Note

The SDK must be initialized before a user can enter a voice chat room.

Function prototype

ITMGContext virtual int Init(const char* sdkAppId, const char* openId)

Parameter	Type	Description
sdkAppId	char*	AppId provided by the GME service from the Tencent Cloud Console
openId	char*	OpenId can only be in Int64 type (converted to string) with a value greater than 10,000; otherwise, initialization and room entry will fail.

Returned Value	Description
AV_OK = 0	Initialized SDK successfully.
AV_ERR_SDK_NOT_FULL_UPDATE=7015	Checks whether the SDK file is complete. It is recommended to delete it and then import the SDK again.

The returned value AV_ERR_SDK_NOT_FULL_UPDATE is only a reminder but will not cause an initialization failure.

• If this error is reported during integration, please check the integrity and version of the SDK file as prompted.
• If this error is returned after executable file export, please ignore it and try to avoid displaying it in the UI.

Sample code

#define SDKAPPID3RD "1400089356"
cosnt char* openId="10001";
ITMGContext* context = ITMGContextGetInstance();
context->Init(SDKAPPID3RD, openId);

Triggering event callback

Event callbacks can be triggered by periodically calling the Poll API in update. The Poll API should be called periodically for GME to trigger event callbacks; otherwise, the entire SDK service will run exceptionally.
You can refer to the EnginePollHelper.cpp file in the demo.

Function prototype

class ITMGContext {
protected:
  virtual ~ITMGContext() {}

public:        
virtual void Poll()= 0;
}

Sample code

// Declaration in the header file
// Code implementation
void TMGTestScene::update(float delta)
{
  ITMGContextGetInstance()->Poll();
}

Pausing the system

When a Pause event occurs in the system, the engine should also be notified for pause.

Function prototype

ITMGContext int Pause()

Resuming the system

When a Resume event occurs in the system, the engine should also be notified for resumption. The Resume API only supports resuming voice chat.

Function prototype

ITMGContext int Resume()

Uninitializing SDK

This API is used to uninitialize the SDK to make it uninitialized. Switching accounts requires uninitialization.

Function prototype

ITMGContext int Uninit()

Voice Chat

Voice chat refers to the one-to-one or one-to-many real-time voice call feature.

Voice chat flowchart

Voice chat room call flowchart

Voice Chat Room APIs

You should initialize and call the SDK to enter a room before voice chat can start.
If you have any questions when using the service, please see Sound and Audio.

API	Description
GenAuthBuffer	Initializes authentication
EnterRoom	Enters room
IsRoomEntered	Indicates whether room entry is successful
ExitRoom	Exits room
ChangeRoomType	Modifies user's room audio type
GetRoomType	Gets user's room audio type

Authentication information

Generate AuthBuffer for encryption and authentication of relevant features. For release in the production environment, please use the backend deployment key as detailed in Authentication Key.
To get authentication for voice message and speech-to-text, the room ID parameter must be set to null.

Function prototype

int  QAVSDK_AuthBuffer_GenAuthBuffer(unsigned int dwSdkAppID, const char* strRoomID, const char* strOpenID,
const char* strKey, unsigned char* strAuthBuffer, unsigned int bufferLength);

Parameter	Type	Description
dwSdkAppID	int	AppId from the Tencent Cloud console.
strRoomID	char*	Room ID, which can contain up to 127 characters (for voice messaging and speech-to-text service, enter null).
strOpenID	char*	User ID, which is the same as openID during initialization.
strKey	char*	Permission key from the Tencent Cloud Console
strAuthBuffer	char*	Returned authbuff
bufferLength	int	Length of the authbuff passed in. 500 is recommended.

Sample code

unsigned int bufferLen = 512;
unsigned char retAuthBuff[512] = {0};
QAVSDK_AuthBuffer_GenAuthBuffer(atoi(SDKAPPID3RD), roomId, "10001", AUTHKEY,retAuthBuff,bufferLen);

Entering a room

When a user enters a room with the generated authentication information, the ITMG_MAIN_EVENT_TYPE_ENTER_ROOM message will be received as a callback. Mic and speaker are not enabled by default after room entry. The returned value of AV_OK indicates a success.

Function prototype

ITMGContext virtual int EnterRoom(const char*  roomID, ITMG_ROOM_TYPE roomType, const char* authBuff, int buffLen)

Parameter	Type	Description
roomId	char*	Room ID, which can contain up to 127 characters
roomType	ITMG_ROOM_TYPE	Room audio type
authBuffer	char*	Authentication key
buffLen	int	Authentication key length

For more information on how to choose a room audio type, please see Sound Quality Selection.

Sample code

ITMGContext* context = ITMGContextGetInstance();
context->EnterRoom(roomID, ITMG_ROOM_TYPE_STANDARD, (char*)retAuthBuff,bufferLen);

Callback for room entry

After the user enters the room, the message ITMG_MAIN_EVENT_TYPE_ENTER_ROOM will be sent and identified in the OnEvent function for callback and processing.

Sample code

void TMGTestScene::OnEvent(ITMG_MAIN_EVENT_TYPE eventType,const char* data){
    switch (eventType) {
        case ITMG_MAIN_EVENT_TYPE_ENTER_ROOM:
        {
            ListMicDevices();
            ListSpeakerDevices();
                std::string strText = "EnterRoom complete: ret=";
            strText += data;
            m_EditMonitor.SetWindowText(MByteToWChar(strText).c_str());
            }
    }
}

Data details

Message	Data	Sample
ITMG_MAIN_EVENT_TYPE_ENTER_ROOM	result; error_info	{"error_info":"","result":0}
ITMG_MAIN_EVENT_TYPE_ROOM_DISCONNECT	result; error_info	{"error_info":"waiting timeout, please check your network","result":0}

Error codes

Error Code Value	Cause and Suggested Solution
7006	Authentication failed. Possible causes: 1. The AppID does not exist or is incorrect. 2. An error occurred while authenticating the authbuff. 3. Authentication expired. 4. The openID is non-compliant.
7007	Already in another room.
1001	The user was already in the process of entering a room but repeated this operation. It is recommended not to call the room entering API until the room entry callback is returned.
1003	The user was already in the room and called the room entering API again.
1101	Make sure that the SDK is initialized, OpenId complies with the rules, the APIs are called in the same thread, and the Poll API is called normally.

Determining whether user has entered room

This API is used to determine whether the user has entered a room. A bool-type value will be returned.

Function prototype

ITMGContext virtual bool IsRoomEntered()

Sample code

ITMGContext* context = ITMGContextGetInstance();
context->IsRoomEntered();

Exiting a room

This API is called to exit the current room. It is an async API. The returned value of AV_OK indicates a successful async delivery.

Note

If there is a scenario in the application where room entry is performed immediately after room exit, you don't need to wait for the RoomExitComplete callback notification from the ExitRoom API during API call; instead, you can directly call the API.

Function prototype

ITMGContext virtual int ExitRoom()

Sample code

ITMGContext* context = ITMGContextGetInstance();
context->ExitRoom();

Callback for room exit

After the user exits a room, a callback will be returned with the message being ITMG_MAIN_EVENT_TYPE_EXIT_ROOM.

Sample code

void TMGTestScene::OnEvent(ITMG_MAIN_EVENT_TYPE eventType,const char* data){
switch (eventType) {
    case ITMG_MAIN_EVENT_TYPE_EXIT_ROOM:
    {
        // Process
        break;
        }
    }
}

Data details

Message	Data	Sample
ITMG_MAIN_EVENT_TYPE_EXIT_ROOM	result; error_info	{"error_info":"","result":0}

Modifying user's room audio type

This API is used to modify a user's room audio type. For the result, please see the callback event. The event type is ITMG_MAIN_EVENT_TYPE_CHANGE_ROOM_TYPE. The audio type of the room is determined by the first user to enter the room. After that, if a member in the room changes the room type, it will take effect for all members there.

Function prototype

IITMGContext TMGRoom public int ChangeRoomType((ITMG_ROOM_TYPE roomType)

Parameter	Type	Description
roomType	ITMG_ROOM_TYPE	Room type to be switched to. For room audio types, please see the EnterRoom API.

Sample code

ITMGContext* context = ITMGContextGetInstance();
ITMGContextGetInstance()->GetRoom()->ChangeRoomType(ITMG_ROOM_TYPE_FLUENCY);

Getting user's room audio type

This API is used to get a user's room audio type. The returned value is the room audio type. Value 0 indicates that an error occurred while getting the user's room audio type. For room audio types, please see the EnterRoom API.

Function prototype

IITMGContext TMGRoom public  int GetRoomType()

Sample code

ITMGContext* context = ITMGContextGetInstance();
ITMGContextGetInstance()->GetRoom()->GetRoomType();

Callback for room type setting completion

After the room type is set, the event message ITMG_MAIN_EVENT_TYPE_CHANGE_ROOM_TYPE will be returned in the callback. The returned parameters include result, error_info, and new_room_type. The new_room_type represents the following information. The event message will be identified in the OnEvent function.

Event Subtype	Parameter	Description
ITMG_ROOM_CHANGE_EVENT_ENTERROOM	1	Indicates that the existing audio type is inconsistent with and changed to that of the entered room.
ITMG_ROOM_CHANGE_EVENT_START	2	Indicates that a user is already in the room and the audio type starts changing (e.g., calling the ChangeRoomType API to change the audio type).
ITMG_ROOM_CHANGE_EVENT_COMPLETE	3	Indicates that a user is already in the room and the audio type has been changed.
ITMG_ROOM_CHANGE_EVENT_REQUEST	4	Indicates that a room member calls the ChangeRoomType API to request a change of room audio type.

Sample code

void TMGTestScene::OnEvent(ITMG_MAIN_EVENT_TYPE eventType,const char* data) {
    if (ITMGContext.ITMG_MAIN_EVENT_TYPE.ITMG_MAIN_EVENT_TYPE_CHANGE_ROOM_TYPE == type)
                {
        // Process room type events
     }
}

Data details

Message	Data	Sample
ITMG_MAIN_EVENT_TYPE_CHANGE_ROOM_TYPE	result; error_info; new_room_type	{"error_info":"","new_room_type":0,"result":0}

Member status change

Notification for this event will be sent only when the status changes. To get member status in real time, cache the notification when it is received at a higher layer. The event message is ITMG_MAIN_EVNET_TYPE_USER_UPDATE, where the data contains event_id and user_list. The event message will be identified in the OnEvent function.
Notifications for audio events are subject to a threshold, and a notification will be sent only when this threshold is exceeded. The notification "A member has stopped sending audio packets" will be sent if no audio packets are received in more than two seconds.

event_id	Description	Maintenance
ITMG_EVENT_ID_USER_ENTER	A member enters the room	Member list
ITMG_EVENT_ID_USER_EXIT	A member exits the room	Member list
ITMG_EVENT_ID_USER_HAS_AUDIO	A member sends audio packets. This event can be used to determine whether a user is speaking and display the voiceprint effect	Chat member list
ITMG_EVENT_ID_USER_NO_AUDIO	A member stops sending audio packets	Chat member list

Room member maintenance flowchart

Sample code

void TMGTestScene::OnEvent(ITMG_MAIN_EVENT_TYPE eventType,const char* data){
switch (eventType) {
           case ITMG_MAIN_EVNET_TYPE_USER_UPDATE:
    {
    // Process
    // Parse the parameter to get `eventID` and `user_list`
        switch (eventID)
            {
            case ITMG_EVENT_ID_USER_ENTER:
                 // A member enters the room
                 break;
            case ITMG_EVENT_ID_USER_EXIT:
                 // A member exits the room
            break;
        case ITMG_EVENT_ID_USER_HAS_AUDIO:
            // A member sends audio packets
            break;
        case ITMG_EVENT_ID_USER_NO_AUDIO:
            // A member stops sending audio packets
            break;
            default:
            break;
        }
    break;
    }
}
}

Data details

Message	Data	Sample
ITMG_MAIN_EVNET_TYPE_USER_UPDATE	event_id; user_list	{"event_id":0,"user_list":""}

The monitoring event of room call quality

The message for quality monitoring event triggered once every two seconds after room entry is ITMG_MAIN_EVENT_TYPE_CHANGE_ROOM_QUALITY. The returned parameters include weight, loss, and delay, which represent the following information.

Parameter	Type	Description
weight	int	Value range: 1-50. 50 indicates excellent sound quality, 1 indicates very poor (barely usable) sound quality, and 0 represents an initial meaningless value. Generally, if the value is below 30, you can remind users that the network is poor and recommend them to switch the network.
loss	double	Upstream packet loss rate
delay	int	Voice chat delay in ms

Voice Chat Audio APIs

Notes on voice chat audio connection

The voice chat APIs can only be called after SDK initialization and room entry.
When Enable/Disable Mic/Speaker is clicked on the UI, the following practices are recommended:

• For most game applications, it is recommended to call the EnableMic and EnableSpeaker APIs, which is equivalent to calling the EnableAudioCaptureDevice/EnableAudioSend and EnableAudioPlayDevice/EnableAudioRecv APIs.
• For other mobile applications (such as social networking applications), enabling/disabling a capturing device will restart both capturing and playback devices. If the application is playing back background music, it will also be interrupted. Playback will not be interrupted if the mic is enabled/disabled through control of upstreaming/downstreaming. Calling method: call EnableAudioCaptureDevice(true) and EnableAudioPlayDevice(true) once after room entry, and call EnableAudioSend/Recv to send/receive audio streams when Enable/Disable Mic is clicked.
• For more information on how to release only a capturing or playback device, please see the EnableAudioCaptureDevice and EnableAudioPlayDevice.
• Call the pause API to pause the audio engine and call the resume API to resume the audio engine.

Voice chat audio APIs

API	Description
GetMicListCount	Gets the number of mics
GetMicList	Enumerates mics
GetSpeakerListCount	Gets the number of speakers
GetSpeakerList	Enumerates speakers
SelectMic	Selects mic
SelectSpeaker	Selects speakers
EnableMic	Enables/disables mic
GetMicState	Gets mic status
EnableAudioCaptureDevice	Enables/disables capturing device
IsAudioCaptureDeviceEnabled	Gets capturing device status
EnableAudioSend	Enables/disables audio upstreaming
IsAudioSendEnabled	Gets audio upstreaming status
GetMicLevel	Gets real-time mic volume level
GetSendStreamLevel	Gets real-time audio upstreaming volume level
SetMicVolume	Sets mic volume level
GetMicVolume	Gets mic volume level
EnableSpeaker	Enables/disables speaker
GetSpeakerState	Gets speaker status
EnableAudioPlayDevice	Enables/disables playback device
IsAudioPlayDeviceEnabled	Gets playback device status
EnableAudioRecv	Enables/disables audio downstreaming
IsAudioRecvEnabled	Gets audio downstreaming status
GetSpeakerLevel	Gets real-time speaker volume level
GetRecvStreamLevel	Gets real-time downstreaming audio levels of other members in room
SetSpeakerVolume	Sets speaker volume level
GetSpeakerVolume	Gets speaker volume level
EnableLoopBack	Enables/disables in-ear monitoring

Voice Chat Capturing APIs

Getting the number of mics

This API is used to get the number of mics.

Function prototype

ITMGAudioCtrl virtual int GetMicListCount()

Sample code

ITMGContextGetInstance()->GetAudioCtrl()->GetMicListCount();

Enumerating mics

This API is used together with the GetMicListCount API to enumerate mics.

Function prototype

ITMGAudioCtrl virtual int GetMicList(TMGAudioDeviceInfo* ppDeviceInfoList, int nCount)
class TMGAudioDeviceInfo
{
    public:
        const char* pDeviceID;
        const char* pDeviceName;
};

Parameter	Type	Description
ppDeviceInfoList	TMGAudioDeviceInfo	Device list
nCount	int	Gets the number of mics

Sample code

ITMGContextGetInstance()->GetAudioCtrl()->GetMicList(ppDeviceInfoList,nCount);

Selecting mic

This API is used to select a mic. If this API is not called or DEVICEID_DEFAULT is passed in, the default mic will be selected. The device ID is from the list returned by GetMicList.

Function prototype

ITMGAudioCtrl virtual int SelectMic(const char* pMicID)

Parameter	Type	Description
pMicID	char*	Mic device ID

Sample code

const char* pMicID ="{0.0.1.00000000}.{7b0b712d-3b46-4f7a-bb83-bf9be4047f0d}";
ITMGContextGetInstance()->GetAudioCtrl()->SelectMic(pMicID);

Enabling or disabling mic

This API is used to enable/disable the mic. Mic and speaker are not enabled by default after room entry.

EnableMic = EnableAudioCaptureDevice + EnableAudioSend

Function prototype

ITMGAudioCtrl virtual int EnableMic(bool bEnabled)

Parameter	Type	Description
bEnabled	bool	To enable the mic, set this parameter to true, otherwise set it to false.

Sample code

// Enable mic
ITMGContextGetInstance()->GetAudioCtrl()->EnableMic(true);

Getting the mic status

This API is used to get the mic status. The returned value 0 indicates that the mic is off, while 1 on.

Function prototype

ITMGAudioCtrl virtual int GetMicState()

Sample code

ITMGContextGetInstance()->GetAudioCtrl()->GetMicState();

Enabling or disabling capturing device

This API is used to enable/disable a capturing device. The device is not enabled by default after room entry.

• This API can only be called after room entry. The device will be disabled automatically after room exit.
• Operations such as permission application and volume type adjustment will generally be performed when a capturing device is enabled on a mobile device.

Function prototype

ITMGContext virtual int EnableAudioCaptureDevice(bool enable)

Parameter	Type	Description
enable	bool	To enable the capturing device, set this parameter to true, otherwise set it to false.

Sample code

// Enable capturing device
ITMGContextGetInstance()->GetAudioCtrl()->EnableAudioCaptureDevice(true);

Getting the capturing device status

This API is used to get the status of a capturing device.

Function prototype

ITMGContext virtual bool IsAudioCaptureDeviceEnabled()

Sample code

ITMGContextGetInstance()->GetAudioCtrl()->IsAudioCaptureDeviceEnabled();

Enabling or disabling audio upstreaming

This API is used to enable/disable audio upstreaming. If a capturing device is already enabled, it will send captured audio data; otherwise, it will remain mute. For more information on how to enable/disable the capturing device, please see the EnableAudioCaptureDevice API.

Function prototype

ITMGContext  virtual int EnableAudioSend(bool bEnable)

Parameter	Type	Description
enable	bool	To enable the audio upstream, set this parameter to true, otherwise set it to false.

Sample code

ITMGContextGetInstance()->GetAudioCtrl()->EnableAudioSend(true);

Getting audio upstreaming status

This API is used to get the status of audio upstreaming.

Function prototype

ITMGContext virtual bool IsAudioSendEnabled()

Sample code

ITMGContextGetInstance()->GetAudioCtrl()->IsAudioSendEnabled();

Getting the real-time mic volume

This API is used to get the real-time mic volume level. An int-type value in the range of 0-100 will be returned. It is recommended to call this API once every 20 ms.

Note

This API is not applicable to the voice messaging service.

Function prototype

ITMGAudioCtrl virtual int GetMicLevel()

Sample code

ITMGContextGetInstance()->GetAudioCtrl()->GetMicLevel();

Getting the real-time audio upstreaming volume

This API is used to get the local real-time audio upstreaming volume level. An int-type value in the range of 0-100 will be returned.

Note

This API is not applicable to the voice messaging service.

Function prototype

ITMGAudioCtrl virtual int GetSendStreamLevel()

Sample code

ITMGContextGetInstance()->GetAudioCtrl()->GetSendStreamLevel();

Setting the mic software volume

This API is used to set the mic volume level. The corresponding parameter is volume, which is equivalent to attenuating or gaining the captured sound. 0 indicates that the audio is mute, while 100 indicates that the volume level remains unchanged. The default value is 100.

Note

This API is not applicable to the voice messaging service.

Function prototype

ITMGAudioCtrl virtual int SetMicVolume(int vol)

Parameter	Type	Description
vol	int	Volume level. Value range: 0-200

Sample code

ITMGContextGetInstance()->GetAudioCtrl()->SetMicVolume(vol);

Getting the mic software volume

This API is used to get the mic volume level. An int-type value will be returned. 101 indicates that the SetMicVolume API has not been called.

Note

This API is not applicable to the voice messaging service.

Function prototype

ITMGAudioCtrl virtual int GetMicVolume()

Sample code

ITMGContextGetInstance()->GetAudioCtrl()->GetMicVolume();

Voice Chat Playback APIs

Getting the number of speakers

This API is used to get the number of speakers.

Function prototype

ITMGAudioCtrl virtual int GetSpeakerListCount()

Sample code

ITMGContextGetInstance()->GetAudioCtrl()->GetSpeakerListCount();

Enumerating speakers

This API is used together with the GetSpeakerListCount API to enumerate speakers.

Function prototype

ITMGAudioCtrl virtual int GetSpeakerList(TMGAudioDeviceInfo* ppDeviceInfoList, int nCount)
class TMGAudioDeviceInfo
{
    public:
        const char* pDeviceID;
        const char* pDeviceName;
};

Parameter	Type	Description
ppDeviceInfoList	TMGAudioDeviceInfo	Device list
nCount	int	Number of speakers obtained

Sample code

ITMGContextGetInstance()->GetAudioCtrl()->GetSpeakerList(ppDeviceInfoList,nCount);

Selecting speaker

This API is used to select a playback device. If this API is not called or DEVICEID_DEFAULT is passed in, the default playback device will be selected. The device ID is from the list returned by GetSpeakerList.

Function prototype

ITMGAudioCtrl virtual int SelectSpeaker(const char* pSpeakerID)

Parameter	Type	Description
pSpeakerID	char*	Speaker device ID

Sample code

const char* pSpeakerID ="{0.0.1.00000000}.{7b0b712d-3b46-4f7a-bb83-bf9be4047f0d}";
ITMGContextGetInstance()->GetAudioCtrl()->SelectSpeaker(pSpeakerID);

Enabling or disabling speaker

This API is used to enable/disable the speaker.
EnableSpeaker = EnableAudioPlayDevice + EnableAudioRecv

Function prototype

ITMGAudioCtrl virtual int EnableSpeaker(bool enabled)

Parameter	Type	Description
enable	bool	To disable the speaker, set this parameter to false; otherwise, set it to true.

Sample code

// Enable the speaker
ITMGContextGetInstance()->GetAudioCtrl()->EnableSpeaker(true);

Getting the speaker status

This API is used to get the speaker status. 0 indicates that the speaker is off, 1 on, and 2 working.

Function prototype

ITMGAudioCtrl virtual int GetSpeakerState()

Sample code

ITMGContextGetInstance()->GetAudioCtrl()->GetSpeakerState();

Enabling or disabling playback device

This API is used to enable/disable a playback device.

Function prototype

ITMGContext virtual int EnableAudioPlayDevice(bool enable) 

Parameter	Type	Description
enable	bool	To disable the playback device, set this parameter to false; otherwise, set it to true.

Sample code

ITMGContextGetInstance()->GetAudioCtrl()->EnableAudioPlayDevice(true);

Getting the playback device status

This API is used to get the status of a playback device.

Function prototype

ITMGContext virtual bool IsAudioPlayDeviceEnabled()

Sample code

ITMGContextGetInstance()->GetAudioCtrl()->IsAudioPlayDeviceEnabled();

Enabling or disabling audio downstreaming

This API is used to enable/disable audio downstreaming. If a playback device is already enabled, it will play back audio data from other members in the room; otherwise, it will remain mute. For more information on how to enable/disable the playback device, please see the EnableAudioPlayDevice API.

Function prototype

ITMGContext virtual int EnableAudioRecv(bool enable)

Parameter	Type	Description
enable	bool	To enable audio downstream, set this parameter to true; otherwise, set it to false.

Sample code

ITMGContextGetInstance()->GetAudioCtrl()->EnableAudioRecv(true);

Getting audio downstreaming status

This API is used to get the status of audio downstreaming.

Function prototype

ITMGContext virtual bool IsAudioRecvEnabled() 

Sample code

ITMGContextGetInstance()->GetAudioCtrl()->IsAudioRecvEnabled();

Getting the real-time speaker volume

This API is used to get the real-time speaker volume level. An int-type value will be returned to indicate the volume level. It is recommended to call this API once every 20 ms.

Function prototype

ITMGAudioCtrl virtual int GetSpeakerLevel()

Sample code

ITMGContextGetInstance()->GetAudioCtrl()->GetSpeakerLevel();

Getting the real-time downstreaming audio levels of other members in room

This API is used to get the real-time audio downstreaming volume levels of other members in the room. An int-type value will be returned. Value range: 0-200.

Function prototype

ITMGAudioCtrl virtual int GetRecvStreamLevel(const char* openId)

Parameter	Type	Description
openId	char*	openId of another member in the room

Sample code

iter->second.level = ITMGContextGetInstance()->GetAudioCtrl()->GetRecvStreamLevel(iter->second.openid.c_str());

Setting the speaker volume

This API is used to set the speaker volume.
The corresponding parameter is volume. 0 indicates that the audio is mute, while 100 indicates that the volume level remains unchanged. The default value is 100.

Function prototype

ITMGAudioCtrl virtual int SetSpeakerVolume(int vol)

Parameter	Type	Description
vol	int	Volume level. Value range: 0-200

Sample code

int vol = 100;
ITMGContextGetInstance()->GetAudioCtrl()->SetSpeakerVolume(vol);

Getting the speaker volume

This API is used to get the speaker volume. An int-type value will be returned to indicate the volume. 101 indicates that the SetSpeakerVolume API has not been called.
Level indicates the real-time volume level, while Volume the speaker volume level. The final volume level equals to Level*Volume%.
For example, if the value of "Level" is 100 and that of "Volume" is 60, then the final volume level will be 60.

Function prototype

ITMGAudioCtrl virtual int GetSpeakerVolume()

Sample code

ITMGContextGetInstance()->GetAudioCtrl()->GetSpeakerVolume();

Enabling in-ear monitoring

This API is used to enable in-ear monitoring. You need to call EnableLoopBack+EnableSpeaker before you can hear your own voice.

Function prototype

ITMGAudioCtrl virtual int EnableLoopBack(bool enable)

Parameter	Type	Description
enable	bool	Specifies whether to enable

Sample code

ITMGContextGetInstance()->GetAudioCtrl()->EnableLoopBack(true);

Speech-to-Text

Voice message refers to recording and sending a voice message. At the same time, the voice message can be converted to text and translated.

Note

It is recommended to use the streaming speech-to-text service.

Voice messaging and speech-to-text conversion flowchart

Accessing Voice Message and Speech-to-Text Service

Voice message and speech-to-text APIs

API	Description
ApplyPTTAuthbuffer	Initializes authentication
SetMaxMessageLength	Specifies maximum length of voice message
StartRecording	Starts recording
StartRecordingWithStreamingRecognition	Starts streaming recording
PauseRecording	Pauses recording
ResumeRecording	Resumes recording
StopRecording	Stops recording
CancelRecording	Cancels recording
GetMicLevel	Gets real-time mic volume level
SetMicVolume	Sets recording volume level
GetMicVolume	Gets recording volume level
GetSpeakerLevel	Gets the real-time speaker volume
SetSpeakerVolume	Sets playback volume level
GetSpeakerVolume	Gets playback volume level
UploadRecordedFile	Uploads audio file
DownloadRecordedFile	Downloads audio file
PlayRecordedFile	Plays back audio
StopPlayFile	Stops playing back audio
GetFileSize	Gets audio file size
GetVoiceFileDuration	Gets audio file duration
SpeechToText	Converts speech to text

Initializing SDK

Before the initialization, the SDK is in the uninitialized status, and you need to initialize it through the Init API before you can use the voice chat and voice message services.

If you have any questions when using the service, please see Speech-to-text Conversion.

Initialization APIs

API	Description
Init	Initializes GME
Poll	Triggers event callback
Pause	Pauses the system
Resume	Resumes the system
Uninit	Uninitializes GME

Authentication initialization

Call authentication initialization after initializing the SDK. For more information on how to get the authBuffer, please see QAVSDK_AuthBuffer_GenAuthBuffer (the voice chat authentication information API).

Function prototype

ITMGPTT virtual int ApplyPTTAuthbuffer(const char* authBuffer, int authBufferLen)

Parameter	Type	Description
authBuffer	char*	Authentication
authBufferLen	int	Authentication length

Sample code

ITMGContextGetInstance()->GetPTT()->ApplyPTTAuthbuffer(authBuffer,authBufferLen);

Streaming Speech Recognition

Starting streaming speech recognition

This API is used to start streaming speech recognition. Text obtained from speech-to-text conversion will be returned in real time in its callback. It can specify a language for recognition or translate the information recognized in speech into a specified language and return the translation. To stop recording, call StopRecording.

Function prototype

ITMGPTT virtual int StartRecordingWithStreamingRecognition(const char* filePath) 
ITMGPTT virtual int StartRecordingWithStreamingRecognition(const char* filePath,const char* translateLanguage,const char* translateLanguage) 

Parameter	Type	Description
filePath	char*	Path of stored audio file
speechLanguage	char*	The language in which the audio file is to be converted to text. For parameters, please see Language Parameter Reference List
translateLanguage	char*	The language into which the audio file will be translated. For parameters, please see Language Parameter Reference List (This parameter is currently unavailable. Enter the same value as that of speechLanguage)

Sample code

ITMGContextGetInstance()->GetPTT()->StartRecordingWithStreamingRecognition(filePath,"cmn-Hans-CN","cmn-Hans-CN");

Callback for streaming speech recognition

After streaming speech recognition is started, you need to listen for callback messages in the callback function onEvent. Event messages are divided into:

• ITMG_MAIN_EVNET_TYPE_PTT_STREAMINGRECOGNITION_COMPLETE returns text after the recording is stopped and the recognition is completed, which is equivalent to returning the recognized text after a paragraph of speech.
• ITMG_MAIN_EVNET_TYPE_PTT_STREAMINGRECOGNITION_IS_RUNNING returns the recognized text in real-time during the recording, which is equivalent to returning the recognized text while speaking.
  The event message will be identified in the OnEvent function based on the actual needs. The passed parameters include the following four messages.

Message Name	Description
result	Returns code indicating whether streaming speech recognition is successful.
text	Text converted from speech
file_path	Local path of stored recording file
file_id	Backend URL address of recording file, which will be retained for 90 days

Note

The file_id is empty when the 'ITMG_MAIN_EVNET_TYPE_PTT_STREAMINGRecognition_IS_RUNNING' message is listened.

Error codes

Error Code	Description	Suggested Solution
32775	Streaming speech-to-text conversion failed, but recording succeeded.	Call the UploadRecordedFile API to upload the recording file and then call the SpeechToText API to perform speech-to-text conversion.
32777	Streaming speech-to-text conversion failed, but recording and upload succeeded.	The message returned contains a backend URL after successful upload. Call the SpeechToText API to perform speech-to-text conversion.
32786	Streaming speech-to-text conversion failed.	During streaming recording, wait for the execution result of the streaming recording API to return.

Sample code

void TMGTestScene::OnEvent(ITMG_MAIN_EVENT_TYPE eventType,const char* data){
    switch (eventType) {
        case ITMG_MAIN_EVNET_TYPE_PTT_STREAMINGRECOGNITION_COMPLETE:
        {
            HandleSTREAM2TEXTComplete(data,true);
            break;
        }
        ...
        case ITMG_MAIN_EVNET_TYPE_PTT_STREAMINGRECOGNITION_IS_RUNNING:
        {
            HandleSTREAM2TEXTComplete(data, false);
            break;
        }
    }
}
void CTMGSDK_For_AudioDlg::HandleSTREAM2TEXTComplete(const char* data, bool isComplete)
{
    std::string strText = "STREAM2TEXT: ret=";
    strText += data;
    m_EditMonitor.SetWindowText(MByteToWChar(strText).c_str());
    Json::Reader reader;
    Json::Value root;
    bool parseRet = reader.parse(data, root);
    if (!parseRet) {
        ::SetWindowText(m_EditInfo.GetSafeHwnd(),MByteToWChar(std::string("parse result Json error")).c_str());
    }
        else
        {
            if (isComplete) {
                                ::SetWindowText(m_EditUpload.GetSafeHwnd(), MByteToWChar(root["file_id"].asString()).c_str());
                            }
                            else {
                                    std::string isruning = "STREAMINGRECOGNITION_IS_RUNNING";
                                    ::SetWindowText(m_EditUpload.GetSafeHwnd(), MByteToWChar(isruning).c_str());
                                 }
    }
}

Voice Message Recording

Specifying the maximum duration of voice message

This API is used to specify the maximum duration of a voice message, which can be up to 58 seconds.

Function prototype

ITMGPTT virtual int SetMaxMessageLength(int msTime)

Parameter	Type	Description
msTime	int	Audio duration in ms. Value range: 1000 < msTime <= 58000

Sample code

int msTime = 10000;
ITMGContextGetInstance()->GetPTT()->SetMaxMessageLength(msTime);

Starting recording

This API is used to start recording. The recording file must be uploaded first before you can perform operations such as speech-to-text conversion.

Function prototype

ITMGPTT virtual int StartRecording(const char* fileDir)

Parameter	Type	Description
fileDir	char*	Path of stored audio file

Sample code

ITMGContextGetInstance()->GetPTT()->StartRecording(fileDir);

Callback for recording start

The callback function OnEvent will be called after recording is started. The event message ITMG_MAIN_EVNET_TYPE_PTT_RECORD_COMPLETE will be returned, which will be identified in the OnEvent function.
The passed parameter includes result and file_path.

Error codes

Error Code Value	Cause	Suggested Solution
4097	Parameter is empty.	Check whether the API parameters in the code are correct.
4098	Initialization error.	Check whether the device is being used, whether the permissions are normal, and whether the initialization is normal.
4099	Recording is in progress.	Ensure that the SDK recording feature is used at the right time.
4100	Audio data is not captured.	Check whether the mic is working properly.
4101	An error occurred while accessing the file during recording.	Ensure the existence of the file and the validity of the file path.
4102	The mic is not authorized.	Mic permission is required for using the SDK. To add the permission, please see the SDK project configuration document for the corresponding engine or platform.
4103	The recording duration is too short.	The recording duration should be in ms and longer than 1,000 ms.
4104	No recording operation is started.	Check whether the recording starting API has been called.

Sample code

void TMGTestScene::OnEvent(ITMG_MAIN_EVENT_TYPE eventType,const char* data){
switch (eventType) {
    case ITMG_MAIN_EVENT_TYPE_ENTER_ROOM:
    {
    // Process
    break;
        }
    ...
            case ITMG_MAIN_EVNET_TYPE_PTT_RECORD_COMPLETE:
    {
    // Process
    break;
    }
}
}

Pausing recording

This API is used to pause recording. If you want to resume recording, please call the ResumeRecording API.

Function prototype

ITMGPTT virtual int PauseRecording()

Sample code

ITMGContextGetInstance()->GetPTT()->PauseRecording();

Resuming recording

This API is used to resume recording.

Function prototype

ITMGPTT virtual int ResumeRecording()

Sample code

ITMGContextGetInstance()->GetPTT()->ResumeRecording();

Stopping recording

This API is used to stop recording. It is async, and a callback for recording completion will be returned after recording stops. A recording file will be available only after recording succeeds.

Function prototype

ITMGPTT virtual int StopRecording()

Sample code

ITMGContextGetInstance()->GetPTT()->StopRecording();

Canceling recording

This API is used to cancel recording. There is no callback after cancellation.

Function prototype

ITMGPTT virtual int CancelRecording()

Sample code

ITMGContextGetInstance()->GetPTT()->CancelRecording();

Getting the real-time mic volume of voice message

This API is used to get the real-time mic volume level. An int-type value will be returned. Value range: 0-200.

Note

This API is different from the voice chat API and is in ITMGPTT.java.

Function prototype

ITMGPTT virtual int GetMicLevel()

Sample code

ITMGContext.GetInstance(this).GetPTT().GetMicLevel();

Setting the recording volume of voice message

This API is used to set the recording volume level of voice messaging. Value range: 0-200.

Note

This API is different from the voice chat API and is in ITMGPTT.java.

Function prototype

ITMGPTT virtual int SetMicVolume(int vol)

Sample code

ITMGContextGetInstance()->GetPTT()->SetMicVolume(100);

Getting the recording volume of voice message

This API is used to get the recording volume level of voice messaging. An int-type value will be returned. Value range: 0-200.

Note

This API is different from the voice chat API and is in ITMGPTT.

Function prototype

ITMGPTT virtual int GetMicVolume()

Sample code

ITMGContextGetInstance()->GetPTT()->GetMicVolume();

Getting the real-time speaker volume of voice message

This API is used to get the real-time speaker volume level. An int-type value will be returned. Value range: 0-200.

Note

This API is different from the voice chat API and is in ITMGPTT.

Function prototype

ITMGPTT virtual int GetSpeakerLevel()

Sample code

ITMGContextGetInstance()->GetPTT()->GetSpeakerLevel();

Setting the playback volume of voice message

This API is used to set the playback volume level of voice messaging. Value range: 0-200.

Note

This API is different from the voice chat API and is in ITMGPTT.

Function prototype

ITMGPTT virtual int SetSpeakerVolume(int vol)

Sample code

ITMGContextGetInstance()->GetPTT()->SetSpeakerVolume(100);

Getting the playback volume of voice message

This API is used to get the playback volume level of voice messaging. An int-type value will be returned. Value range: 0-200.

Note

This API is different from the voice chat API and is in ITMGPTT.

Function prototype

ITMGPTT virtual int GetSpeakerVolume()

Sample code

ITMGContextGetInstance()->GetPTT()->GetSpeakerVolume();

Voice Message Playback

Playing back audio

This API is used to play back audio.

Function prototype

ITMGPTT virtual int PlayRecordedFile(const char* filePath)

Parameter	Type	Description
filePath	char*	Local audio file path

Error codes

Error Code Value	Cause	Suggested Solution
20485	Playback is not started.	Ensure the existence of the file and the validity of the file path.

Sample code

ITMGContextGetInstance()->GetPTT()->PlayRecordedFile(filePath);

Callback for audio playback

After the audio is played back, the event message ITMG_MAIN_EVNET_TYPE_PTT_PLAY_COMPLETE will be returned, which will be identified in the OnEvent function.
The passed parameter includes result and file_path.

Error codes

Error Code Value	Cause	Suggested Solution
20481	Initialization error.	Check whether the device is being used, whether the permissions are normal, and whether the initialization is normal.
20482	During playback, the client tried to interrupt and play back the next one but failed (which should succeed normally).	Check whether the code logic is correct.
20483	Parameter is empty.	Check whether the API parameters in the code are correct.
20484	Internal error.	An error occurred while initializing the player. This error code is generally caused by failure in decoding, and the error should be located with the aid of logs.

Sample code

void TMGTestScene::OnEvent(ITMG_MAIN_EVENT_TYPE eventType,const char* data){
switch (eventType) {
    case ITMG_MAIN_EVENT_TYPE_ENTER_ROOM:
    {
    // Process
    break;
        }
    ...
            case ITMG_MAIN_EVNET_TYPE_PTT_PLAY_COMPLETE:
    {
    // Process
    break;
    }
}
}

Stopping audio playback

This API is used to stop audio playback. There will be a callback for playback completion when the playback stops.

Function prototype

ITMGPTT virtual int StopPlayFile()

Sample code

ITMGContextGetInstance()->GetPTT()->StopPlayFile();

Getting audio file size

This API is used to get the size of an audio file.

Function prototype

ITMGPTT virtual int GetFileSize(const char* filePath)

Parameter	Type	Description
filePath	char*	Path of audio file, which is a local path.

Sample code

ITMGContextGetInstance()->GetPTT()->GetFileSize(filePath);

Getting audio file duration

This API is used to get the duration of an audio file in milliseconds.

Function prototype

ITMGPTT virtual int GetVoiceFileDuration(const char* filePath)

Parameter	Type	Description
filePath	char*	Path of audio file, which is a local path.

Sample code

ITMGContextGetInstance()->GetPTT()->GetVoiceFileDuration(filePath);

Voice Message Upload and Download

Uploading an audio file

This API is used to upload an audio file.

Function prototype

ITMGPTT virtual int UploadRecordedFile(const char* filePath)

Parameter	Type	Description
filePath	char*	Path of uploaded audio file, which is a local path

Sample code

ITMGContextGetInstance()->GetPTT()->UploadRecordedFile(filePath);

Callback for audio file upload completion

After the audio file is uploaded, the event message ITMG_MAIN_EVNET_TYPE_PTT_UPLOAD_COMPLETE will be returned, which will be identified in the OnEvent function.
The passed parameters include result, file_path, and file_id.

Error codes

Error Code Value	Cause	Suggested Solution
8193	An error occurred while accessing the file during upload.	Ensure the existence of the file and the validity of the file path.
8194	Signature verification failed.	Check whether the authentication key is correct and whether the voice message and speech-to-text feature is initialized.
8195	A network error occurred.	Check whether the device can access the internet.
8196	The network failed while getting the upload parameters.	Check whether the authentication is correct and whether the device can access the internet.
8197	The packet returned during the process of getting the upload parameters is empty.	Check whether the authentication is correct and whether the device network can normally access the internet.
8198	Failed to decode the packet returned during the process of getting the upload parameters.	Check whether the authentication is correct and whether the device can access the internet.
8200	No appinfo is set.	Check whether the apply API is called or whether the input parameters are empty.

Sample code

void TMGTestScene::OnEvent(ITMG_MAIN_EVENT_TYPE eventType,const char* data){
switch (eventType) {
    case ITMG_MAIN_EVENT_TYPE_ENTER_ROOM:
    {
    // Process
    break;
        }
    ...
            case ITMG_MAIN_EVNET_TYPE_PTT_UPLOAD_COMPLETE:
    {
    // Process
    break;
    }
}
}

Downloading the audio file

This API is used to download an audio file.

Function prototype

ITMGPTT virtual int DownloadRecordedFile(const char* fileId, const char* filePath) 

Parameter	Type	Description
fileId	char*	URL path of file
filePath	char*	Local path of saved file

Sample code

ITMGContextGetInstance()->GetPTT()->DownloadRecordedFile(fileID,filePath);

Callback for audio file download completion

After the audio file is downloaded, the event message ITMG_MAIN_EVNET_TYPE_PTT_DOWNLOAD_COMPLETE will be returned, which will be identified in the OnEvent function.
The passed parameters include result, file_path, and file_id.

Error codes

Error Code Value	Cause	Suggested Solution
12289	An error occurred while accessing the file during download.	Check whether the file path is valid.
12290	Signature verification failed.	Check whether the authentication key is correct and whether the voice message and speech-to-text feature is initialized.
12291	Network storage system exception	The server failed to get the audio file. Check whether the API parameter fileid is correct, whether the network is normal, and whether the file exists in COS.
12292	Server file system error.	Check whether the device can access the internet and whether the file exists on the server.
12293	The HTTP network failed during the process of getting the download parameters.	Check whether the device can access the internet.
12294	The packet returned during the process of getting the download parameters is empty.	Check whether the device can access the internet.
12295	Failed to decode the packet returned during the process of getting the download parameters.	Check whether the device can access the internet.
12297	No appinfo is set.	Check whether the authentication key is correct and whether the voice message and speech-to-text feature is initialized.

Sample code

void TMGTestScene::OnEvent(ITMG_MAIN_EVENT_TYPE eventType,const char* data){
switch (eventType) {
    case ITMG_MAIN_EVENT_TYPE_ENTER_ROOM:
    {
    // Process
    break;
        }
    ...
            case ITMG_MAIN_EVNET_TYPE_PTT_DOWNLOAD_COMPLETE:
    {
    // Process
    break;
    }
}
}

Speech-to-Text Service

Converting audio file to text

This API is used to convert a specified audio file to text.

Function prototype

ITMGPTT virtual void SpeechToText(const char* fileID)

Parameter	Type	Description
fileID	char*	URL of audio file

Sample code

ITMGContextGetInstance()->GetPTT()->SpeechToText(fileID);

Translating audio file into text in specified language

This API can specify a language for recognition or translate the information recognized in speech into a specified language and return the translation.

Function prototype

ITMGPTT virtual int SpeechToText(const char* fileID,const char* speechLanguage,const char* translateLanguage)

Parameter	Type	Description
fileID	char*	URL of audio file, which will be retained on the server for 90 days
speechLanguage	char*	The language in which the audio file is to be converted to text. For parameters, please see Language Parameter Reference List
translatelanguage	char*	The language into which the audio file will be translated. For parameters, please see Language Parameter Reference List. This parameter is currently unavailable. Enter the same value as that of speechLanguage.

Sample code

ITMGContextGetInstance()->GetPTT()->SpeechToText(filePath,"cmn-Hans-CN","cmn-Hans-CN");

Callback for recognition

After the specified audio file is converted to text, the event message ITMG_MAIN_EVNET_TYPE_PTT_SPEECH2TEXT_COMPLETE will be returned, which will be identified in the OnEvent function.
The passed parameters include result, file_path and text (recognized text).

Error codes

Error Code Value	Cause	Suggested Solution
32769	An internal error occurred.	Analyze logs, get the actual error code returned from the backend to the client, and ask backend personnel for assistance.
32770	Network failed.	Check whether the device can access the internet.
32772	Failed to decode the returned packet.	Analyze logs, get the actual error code returned from the backend to the client, and ask backend personnel for assistance.
32774	No appinfo is set.	Check whether the authentication key is correct and whether the voice message and speech-to-text feature is initialized.
32776	authbuffer check failed.	Check whether authbuffer is correct.
32784	Incorrect speech-to-text conversion parameter.	Check whether the API parameter fileid in the code is empty.
32785	Speech-to-text translation returned an error.	Error with the backend of voice message and speech-to-text feature. Analyze logs, get the actual error code returned from the backend to the client, and ask backend personnel for assistance.

Sample code

void TMGTestScene::OnEvent(ITMG_MAIN_EVENT_TYPE eventType,const char* data){
switch (eventType) {
    case ITMG_MAIN_EVENT_TYPE_ENTER_ROOM:
    {
    // Process
    break;
        }
    ...
            case ITMG_MAIN_EVNET_TYPE_PTT_SPEECH2TEXT_COMPLETE:
    {
    // Process
    break;
    }
}
}

Advanced APIs

Getting the diagnostic messages

This API is used to get information on the quality of real-time audio/video calls, which is mainly used to view real-time call quality and troubleshoot and can be ignored on the business side.

Function prototype

ITMGRoom virtual const char* GetQualityTips()

Sample code

ITMGContextGetInstance()->GetRoom()->GetQualityTips();

Getting version number

Function prototype

ITMGContext virtual const char* GetSDKVersion()

Sample code

ITMGContextGetInstance()->GetSDKVersion();

Setting log printing level

This API is used to set the level of logs to be printed. It is recommended to keep the default level.

Function prototype

ITMGContext int SetLogLevel(ITMG_LOG_LEVEL levelWrite, ITMG_LOG_LEVEL levelPrint)

Parameter description

Parameter	Type	Description
levelWrite	ITMG_LOG_LEVEL	Sets the level of logs to be written. TMG_LOG_LEVEL_NONE indicates not to write. Default value: TMG_LOG_LEVEL_INFO
levelPrint	ITMG_LOG_LEVEL	Sets the level of logs to be printed. TMG_LOG_LEVEL_NONE indicates not to print. Default value: TMG_LOG_LEVEL_ERROR

ITMG_LOG_LEVEL	Description
TMG_LOG_LEVEL_NONE=0	Does not print logs
TMG_LOG_LEVEL_ERROR=1	Prints error logs (default)
TMG_LOG_LEVEL_INFO=2	Prints info logs
TMG_LOG_LEVEL_DEBUG=3	Prints debug logs
TMG_LOG_LEVEL_VERBOSE=4	Prints verbose logs

Sample code

ITMGContext* context = ITMGContextGetInstance();
context->SetLogLevel(TMG_LOG_LEVEL_INFO,TMG_LOG_LEVEL_INFO);

Setting the log printing path

This API is used to set the log printing path.
The default path is %appdata%\Tencent\GME\ProcessName|.

Function prototype

ITMGContext virtual int SetLogPath(const char* logDir) 

Parameter	Type	Description
logDir	char*	Path

Sample code

cosnt char* logDir = ""// Set a path by yourself
ITMGContext* context = ITMGContextGetInstance();
context->SetLogPath(logDir);

Blocking audio data

This API is used to add an ID to the audio data blocklist. This operation blocks audio from someone and only applies to the local device. A returned value of 0 indicates the call is successful. Assume that users A, B, and C are all speaking using their mic in a room:

• If A blocks C, A can only hear B;
• If B blocks neither A nor C, B can hear both of them;
• If C blocks neither A nor B, C can hear both of them.

Function prototype

ITMGContext ITMGAudioCtrl int AddAudioBlackList(const char* openId)

Parameter	Type	Description
openId	char*	ID to be blocked

Sample code

ITMGContextGetInstance()->GetAudioCtrl()->AddAudioBlackList(openId);

Unblocking audio data

This API is used to remove an ID from the audio data blocklist. A returned value of 0 indicates the call is successful.

Function prototype

ITMGContext ITMGAudioCtrl int RemoveAudioBlackList(const char* openId)

Parameter	Type	Description
openId	char*	ID to be unblocked

Sample code

ITMGContextGetInstance()->GetAudioCtrl()->RemoveAudioBlackList(openId);

Callback Messages

Message list

Message	Description
ITMG_MAIN_EVENT_TYPE_ENTER_ROOM	Indicates that a member enters an audio room.
ITMG_MAIN_EVENT_TYPE_EXIT_ROOM	Indicates that a member exits an audio room.
ITMG_MAIN_EVENT_TYPE_ROOM_DISCONNECT	Indicates that a room is disconnected for network or other reasons.
ITMG_MAIN_EVENT_TYPE_CHANGE_ROOM_TYPE	Indicates a room type change event.
ITMG_MAIN_EVENT_TYPE_MIC_NEW_DEVICE	Indicates that a new mic is added
ITMG_MAIN_EVENT_TYPE_MIC_LOST_DEVICE	Indicates that a mic is lost
ITMG_MAIN_EVENT_TYPE_SPEAKER_NEW_DEVICE	Indicates that a new speaker is added
ITMG_MAIN_EVENT_TYPE_SPEAKER_LOST_DEVICE	Indicates that a speaker is lost
ITMG_MAIN_EVENT_TYPE_ACCOMPANY_FINISH	Indicates that the accompaniment is over.
ITMG_MAIN_EVNET_TYPE_USER_UPDATE	Indicates that the room members are updated.
ITMG_MAIN_EVENT_TYPE_NUMBER_OF_USERS_UPDATE	Indicates that the room member quantity is updated.
ITMG_MAIN_EVENT_TYPE_NUMBER_OF_AUDIOSTREAMS_UPDATE	Indicates that the room audio stream quantity is updated.
ITMG_MAIN_EVENT_TYPE_CHANGE_ROOM_QUALITY	Indicates the room quality information.
ITMG_MAIN_EVNET_TYPE_PTT_RECORD_COMPLETE	Indicates that PTT recording is completed.
ITMG_MAIN_EVNET_TYPE_PTT_UPLOAD_COMPLETE	Indicates that PTT upload is completed.
ITMG_MAIN_EVNET_TYPE_PTT_DOWNLOAD_COMPLETE	Indicates that PTT download is completed.
ITMG_MAIN_EVNET_TYPE_PTT_PLAY_COMPLETE	Indicates that PTT playback is completed.
ITMG_MAIN_EVNET_TYPE_PTT_SPEECH2TEXT_COMPLETE	Indicates that speech-to-text conversion is completed.

Data list

Message	Data	Sample
ITMG_MAIN_EVENT_TYPE_ENTER_ROOM	result; error_info	{"error_info":"","result":0}
ITMG_MAIN_EVENT_TYPE_EXIT_ROOM	result; error_info	{"error_info":"","result":0}
ITMG_MAIN_EVENT_TYPE_ROOM_DISCONNECT	result; error_info	{"error_info":"waiting timeout, please check your network","result":0}
ITMG_MAIN_EVENT_TYPE_CHANGE_ROOM_TYPE	result; error_info; sub_event_type; new_room_type	{"error_info":"","new_room_type":0,"result":0}
ITMG_MAIN_EVENT_TYPE_SPEAKER_NEW_DEVICE	result; error_info	{"deviceID":"{0.0.0.00000000}.{a4f1e8be-49fa-43e2-b8cf-dd00542b47ae}","deviceName":"Speaker (Realtek High Definition Audio)","error_info":"","isNewDevice":true,"isUsedDevice":false,"result":0}
ITMG_MAIN_EVENT_TYPE_SPEAKER_LOST_DEVICE	result; error_info	{"deviceID":"{0.0.0.00000000}.{a4f1e8be-49fa-43e2-b8cf-dd00542b47ae}","deviceName":"Speaker (Realtek High Definition Audio)","error_info":"","isNewDevice":false,"isUsedDevice":false,"result":0}
ITMG_MAIN_EVENT_TYPE_MIC_NEW_DEVICE	result; error_info	{"deviceID":"{0.0.1.00000000}.{5fdf1a5b-f42d-4ab2-890a-7e454093f229}","deviceName":"Mic (Realtek High Definition Audio)","error_info":"","isNewDevice":true,"isUsedDevice":true,"result":0}
ITMG_MAIN_EVENT_TYPE_MIC_LOST_DEVICE	result; error_info	{"deviceID":"{0.0.1.00000000}.{5fdf1a5b-f42d-4ab2-890a-7e454093f229}","deviceName":"Mic (Realtek High Definition Audio)","error_info":"","isNewDevice":false,"isUsedDevice":true,"result":0}
ITMG_MAIN_EVNET_TYPE_USER_UPDATE	user_list; event_id	{"event_id":1,"user_list":["0"]}
ITMG_MAIN_EVENT_TYPE_NUMBER_OF_USERS_UPDATE	AllUser; AccUser; ProxyUser	{"AllUser":3,"AccUser":2,"ProxyUser":1}
ITMG_MAIN_EVENT_TYPE_NUMBER_OF_AUDIOSTREAMS_UPDATE	AudioStreams	{"AudioStreams":3}
ITMG_MAIN_EVENT_TYPE_CHANGE_ROOM_QUALITY	weight; loss; delay	{"weight":5,"loss":0.1,"delay":1}
ITMG_MAIN_EVNET_TYPE_PTT_RECORD_COMPLETE	result; file_path	{"file_path":"","result":0}
ITMG_MAIN_EVNET_TYPE_PTT_UPLOAD_COMPLETE	result; file_path;file_id	{"file_id":"","file_path":"","result":0}
ITMG_MAIN_EVNET_TYPE_PTT_DOWNLOAD_COMPLETE	result; file_path;file_id	{"file_id":"","file_path":"","result":0}
ITMG_MAIN_EVNET_TYPE_PTT_PLAY_COMPLETE	result; file_path	{"file_path":"","result":0}
ITMG_MAIN_EVNET_TYPE_PTT_SPEECH2TEXT_COMPLETE	result; text;file_id	{"file_id":"","text":"","result":0}
ITMG_MAIN_EVNET_TYPE_PTT_STREAMINGRECOGNITION_COMPLETE	result; file_path; text;file_id	{"file_id":"","file_path":","text":"","result":0}