/**
 * The called party responses
 * The called party receives the call from the calling party
 * @param fromID
 */
virtual void onCalling(string fromID);

/**
 * The receiver responses the audio call
 * The called party receives the audio call from the calling party
 * @param fromID
 */
virtual void onAudioCalling(string fromID);

/**
 * The called party responses
 * The calling party hangs up before the called party answers (the call is cancelled)
 * @param fromID
 */
virtual void onCancled(string fromID);

/**
 * The calling party response
 * The called party refused to connect (the call was refused)
 * @param fromID
 */
virtual void onRefused(string fromID);

/**
 * The calling party response
 * The called party is busy (the other party is in a call)
 * @param fromID
 */
virtual void onBusy(string fromID);

/**
 * Missed calls during a call
 */
virtual void onMiss(CIMMessage* pMsg);

/**
 * The calling party response
 * The called party is connected (the call is starting)
 * @param fromID
 */
virtual void onConnected(string fromID);

/**
 * The other party has hung up
 * @param fromID
 */
virtual void onHangup(string fromID);

/**
 * voip error
 * @param errorCode
 */
virtual void onError(string errorCode);

/**
 * Receive real-time data
 * @param data
 */
virtual void onReceiveRealtimeData(uint8_t* data, int length);

/**
 * Receive video data
 * @param data
 */
virtual int getVideoRaw(string strUserId, int w, int h, uint8_t* videoData, int videoDataLen);

/**
* Data transfer mode has changed
* @param state
*/
virtual void onTransStateChanged(int state);

/**
* Set the media type (audio and video, audio, video)
* @param mediaTypeEnum media type
*/
void setRtcMediaType(int mediaTypeEnum);

/**
* Get the media type（audio and video, audio, video）
*/
int getRtcMediaType();

/**
 * The calling party call the function
 * Start a video call
 * @param strTargetId The called user ID
 */
bool call(string strTargetId);

/**
 * The calling call the function
 * Start an audio call
 * @param strTargetId 对方ID
 */
bool audioCall(string strTargetId);

/**
* The calling call the function
* Before the other party answers or rejects, the calling party cancels the call actively.
*/
void cancel();

/**
 * It is called by the called party
 * Agree to talk to the calling party
 * @param fromID
 */
void accept(string fromID);

/**
 * It is called by the called party
 * Refuse to talk to the calling party
 */
void refuse();

/**
 * Both sieds can call the function
 * hangup
 */
void hangup(int isActive);	

/**
 * Insert audio data
 * @param audioData
 * @param dataLen
 */
void insertAudioRaw(uint8_t* audioData, int dataLen);
/**
 * Insert video data
 * @param videoData
 * @param dataLen
 * @param isBig
 */
void insertVideoRaw(uint8_t* videoData, int dataLen, int isBig);
/**
 * Crop the video data
 */
int cropVideoRawNV12(int w, int h, uint8_t* videoData, int dataLen, int yuvProcessPlan, int rotation, int needMirror, uint8_t* outVideoDataBig, uint8_t* outVideoDataSmall);	
/**
 * Query the audio data
 */
void querySoundData(uint8_t** pData, int* nLength);