tencent cloud

// TRTCMainViewController.h

// Inherit the `ITRTCCloudCallback` callback API class
class TRTCMainViewController : public ITRTCCloudCallback
{
public:
    TRTCMainViewController();
    virtual ~TRTCMainViewController();

    virtual void onError(TXLiteAVError errCode, const char* errMsg, void* arg);
    virtual void onWarning(TXLiteAVWarning warningCode, const char* warningMsg, void* arg);
    virtual void onEnterRoom(uint64_t elapsed);
    virtual void onExitRoom(int reason);
    virtual void onRemoteUserEnterRoom(const char* userId);
    virtual void onRemoteUserLeaveRoom(const char* userId, int reason);
    virtual void onUserVideoAvailable(const char* userId, bool available);
    virtual void onUserAudioAvailable(const char* userId, bool available);
...
private:
    ITRTCCloud * m_pTRTCSDK = NULL；
...
}

// TRTCMainViewController.cpp

TRTCMainViewController::TRTCMainViewController()
{
    // Create a `TRTCCloud` instance
    m_pTRTCSDK = getTRTCShareInstance();

    // Subscribe to the SDK’s events
    m_pTRTCSDK->addCallback(this);
}

TRTCMainViewController::~TRTCMainViewController()
{
    // Unsubscribe from the SDK’s events
    if(m_pTRTCSDK) {
        m_pTRTCSDK->removeCallback(this);
    }

    // Release the `TRTCCloud` instance
      if(m_pTRTCSDK != NULL) {
       destroyTRTCShareInstance();
        m_pTRTCSDK = null;
    }
}

// Error notifications indicate that the SDK has stopped working and therefore must be listened for.
virtual void TRTCMainViewController::onError(TXLiteAVError errCode, const char* errMsg, void* arg)
{
    if (errCode == ERR_ROOM_ENTER_FAIL) {
        LOGE(L"onError errorCode[%d], errorInfo[%s]", errCode, UTF82Wide(errMsg).c_str());
            exitRoom();
     }
}


void TRTCMainViewController::onEnterRoom(uint64_t elapsed)
{
    // Get the handle of the rendering window
    CWnd *pLocalVideoView = GetDlgItem(IDC_LOCAL_VIDEO_VIEW);
    HWND hwnd = pLocalVideoView->GetSafeHwnd();

    if(m_pTRTCSDK)
    {
        // Call the APIs below to set the rendering mode and rendering window
        m_pTRTCSDK->setLocalViewFillMode(TRTCVideoFillMode_Fit);
        m_pTRTCSDK->startLocalPreview(hwnd);
    }

}


// TRTCMainViewController.cpp

void TRTCMainViewController::startBroadCasting()
{
    // For the definition of `TRTCParams`, please see the header file `TRTCCloudDef.h`.
    TRTCParams params;
    params.sdkAppId = sdkappid;
    params.userId   = userid;
    params.userSig  = usersig;
    params.roomId   = 908; // Set it to the ID of the room you want to enter
    params.role     = TRTCRoleAnchor; //Anchor
    if(m_pTRTCSDK)
    {
        m_pTRTCSDK->enterRoom(params, TRTCAppSceneLIVE);
    }
}

void TRTCMainViewController::onError(TXLiteAVError errCode, const char* errMsg, void* arg)
{
    if(errCode == ERR_ROOM_ENTER_FAIL)
    {
        LOGE(L"onError errorCode[%d], errorInfo[%s]", errCode, UTF82Wide(errMsg).c_str());
        // Check whether `userSig` is valid, network is normal, etc.
    }
}

...

void TRTCMainViewController::onEnterRoom(uint64_t elapsed)
{
    LOGI(L"onEnterRoom elapsed[%lld]", elapsed);

    // Enable local video preview. For details, please see the sections below about encoding settings and local video preview
}


void TRTCMainViewController::startPlaying()
{
    // For the definition of `TRTCParams`, please see the header file `TRTCCloudDef.h`.
    TRTCParams params;
    params.sdkAppId = sdkappid;
    params.userId   = userid;
    params.userSig  = usersig;
    params.roomId   = 908; // Set it to the ID of the room you want to enter
    params.role     = TRTCRoleAudience; // Viewer
    if(m_pTRTCSDK)
    {
        m_pTRTCSDK->enterRoom(params, TRTCAppSceneLIVE);
    }
}


void TRTCMainViewController::onUserVideoAvailable(const char* userId, bool available){
    if (available) {
        // Get the handle of the rendering window
        CWnd *pRemoteVideoView = GetDlgItem(IDC_REMOTE_VIDEO_VIEW);
        HWND hwnd = pRemoteVideoView->GetSafeHwnd();  

        // Set the rendering mode of the remote video
        m_pTRTCSDK->setRemoteViewFillMode(TRTCVideoFillMode_Fill);
        // Call the API below to play the remote video
        m_pTRTCSDK->startRemoteView(userId, hwnd);
    } else {
        m_pTRTCSDK->stopRemoteView(userId);
    }    
}