東進D647數字中繼卡電話銀行的DEMO--註釋

 分析了DEMO中的核心函數的代碼，並添加了註釋。詳情如下：

 

void TrunkWork(int trunkID)
{
    int VoiceID;
    int result;
    char FileName[200];

    result = DJNo7_GetChnState( trunkID/30,trunkID%30);     //檢查中繼通道狀態
    if( result == CH_WAIT_RELEASE )     //
    {
        ResetTrunk(trunkID);    //復位中繼通道
        DJNo7_SetChnState(trunkID/30,trunkID%30, CH_SET_FREE ); //wait app release resource
        return ; //process the next channel
    }
    switch(Trunk[trunkID].State)
    {
    case TRK_FREE:
        if(result==CALLEE_RECV_IAM) //呼叫到達 接收全地址
        {
            DJNo7_GetCalleeNum( trunkID/30,trunkID%30, Trunk[trunkID].CalleeCode);  //獲取被叫
            DJNo7_GetCallerNum( trunkID/30,trunkID%30, Trunk[trunkID].CallerCode);  //獲取主叫
            DJNo7_SetChnStateA( trunkID/30,trunkID%30, CALLEE_SET_ACM, ACM_ADDR_CHARGE | ACM_CALLEE_IDLE | ACM_ALL_NO7_PATH );//send ack signal
            DJNo7_SetChnStateA( trunkID/30,trunkID%30, CALLEE_SET_ANC, CSM_CHARGE );//send offhook signal

            DJTrk_InitDtmfBuf(trunkID); // new add by HJN

            strcpy ( FileName, DJSys_GetInstallDir () );
            strcat ( FileName, "voc\\bank.001");
            DJVoc_PlayFile(trunkID,FileName);   //開始播放歡迎語音
            Trunk[trunkID].State = TRK_WELCOME;
        }
        break;

    case TRK_WELCOME:
        VoiceID = DJTrk_GetTrunkPlayID(trunkID);    //取得給本通道放音的語音通道號
        if(VoiceID<0)
        {
            MessageBox(NULL,"Get Voice ID Error!","Error",MB_OK);
            ResetTrunk(trunkID);
        }
        else
        {
            //DJVoc_CheckVoiceEnd--檢查該語音通道的語音操作是否結束，即錄放音是否到達指定的大小
            //DJTrk_GetReciveDtmfNum--讀取DTMF撥號的位數，用戶按一次鍵該數將遞增，如果在系統DTMF緩衝區中沒有收到DTMF，本函數返回0
            if(DJVoc_CheckVoiceEnd(VoiceID)||(DJTrk_GetReciveDtmfNum(trunkID)>0))
            {
                DJVoc_StopPlayFile(trunkID);    //停止放音
                strcpy(FileName,DJSys_GetInstallDir());
                strcat(FileName,"voc\\bank.002");
                DJVoc_PlayFile(trunkID,FileName);
                Trunk[trunkID].State=TRK_ACCOUNT;
            }
        }
        break;
    case TRK_ACCOUNT:

        VoiceID=DJTrk_GetTrunkPlayID(trunkID);
        if(VoiceID>=0)
        {
            if(DJVoc_CheckVoiceEnd(VoiceID))
            {
                DJVoc_StopPlayFile(trunkID);
                Trunk[trunkID].State = TRK_GETACCOUNT;
            }
        }
        if(DJTrk_GetReciveDtmfNum(trunkID)>=1)
        {
            if(VoiceID>0) DJVoc_StopPlayFile(trunkID);
            Trunk[trunkID].State = TRK_GETACCOUNT;
        }
        break;
    case TRK_GETACCOUNT:
        if(DJTrk_GetReciveDtmfNum(trunkID)>=8)
        {
            DJTrk_InitDtmfBuf(trunkID);
            strcpy ( FileName, DJSys_GetInstallDir () );
            strcat ( FileName, "voc\\bank.003");
            DJVoc_PlayFile(trunkID,FileName);
            Trunk[trunkID].State = TRK_PASSWORD;
        }
        break;
    case TRK_PASSWORD:
        VoiceID=DJTrk_GetTrunkPlayID(trunkID);
        if(VoiceID>=0)
        {
            if(DJVoc_CheckVoiceEnd(VoiceID))
            {
                DJVoc_StopPlayFile(trunkID);
                Trunk[trunkID].State=TRK_GETPASSWORD;
            }
        }
        if(DJTrk_GetReciveDtmfNum(trunkID)>=1)
        {
            if(VoiceID>0) DJVoc_StopPlayFile(trunkID);
            Trunk[trunkID].State=TRK_GETPASSWORD;
        }
        break;
    case TRK_GETPASSWORD:
        if(DJTrk_GetReciveDtmfNum(trunkID)>=6)
        {
            DJTrk_InitDtmfBuf(trunkID);
            strcpy ( FileName, DJSys_GetInstallDir () );
            strcat ( FileName, "voc\\bank.004");
            DJVoc_PlayFile(trunkID,FileName);
            Trunk[trunkID].State = TRK_SELECT;
        }
        break;
    case TRK_SELECT:
        VoiceID=DJTrk_GetTrunkPlayID(trunkID);
        if(VoiceID>=0)
        {
            if(DJVoc_CheckVoiceEnd(VoiceID))
            {
                DJVoc_StopPlayFile(trunkID);
            }
            VoiceID=-1;
        }
        if(DJTrk_GetReciveDtmfNum(trunkID)>0)
        {
            char Code = DJTrk_GetLastDtmfCode(trunkID);
            DJTrk_InitDtmfBuf(trunkID);
            switch(Code)
            {
            case '1':
                if(VoiceID>0) DJVoc_StopPlayFile(trunkID);
                DJVoc_InitIndexPlayFile(trunkID);   //對某一箇中繼通道初始化文件索引放音
                strcpy ( FileName, DJSys_GetInstallDir () );
                strcat ( FileName, "voc\\bank.005");
                DJVoc_AddIndexPlayFile(trunkID,FileName);   //增加索引放音文件
                strcpy ( FileName, DJSys_GetInstallDir () );
                strcat ( FileName, "voc\\d5");
                DJVoc_AddIndexPlayFile(trunkID,FileName);

                strcpy ( FileName, DJSys_GetInstallDir () );
                strcat ( FileName, "voc\\d8");
                DJVoc_AddIndexPlayFile(trunkID,FileName);

                strcpy ( FileName, DJSys_GetInstallDir () );
                strcat ( FileName, "voc\\d9");
                DJVoc_AddIndexPlayFile(trunkID,FileName);

                strcpy ( FileName, DJSys_GetInstallDir () );
                strcat ( FileName, "voc\\d6");
                DJVoc_AddIndexPlayFile(trunkID,FileName);
                strcpy ( FileName, DJSys_GetInstallDir () );
                strcat ( FileName, "voc\\d15");
                DJVoc_AddIndexPlayFile(trunkID,FileName);

                strcpy ( FileName, DJSys_GetInstallDir () );
                strcat ( FileName, "voc\\d8");
                DJVoc_AddIndexPlayFile(trunkID,FileName);

                strcpy ( FileName, DJSys_GetInstallDir () );
                strcat ( FileName, "voc\\bank.008");
                DJVoc_AddIndexPlayFile(trunkID,FileName);
                DJVoc_StartIndexPlayFile(trunkID);      //開始一次文件索引放音
                Trunk[trunkID].State = TRK_PLAYRESULT;
                break;
            case '2':
                if(VoiceID>0) DJVoc_StopPlayFile(trunkID);
                DJVoc_InitIndexPlayFile(trunkID);
                strcpy(FileName,DJSys_GetInstallDir());
                strcat(FileName,"voc\\bank.006");
                DJVoc_AddIndexPlayFile(trunkID,FileName);
                strcpy ( FileName, DJSys_GetInstallDir () );
                strcat ( FileName, "voc\\d0");
                DJVoc_AddIndexPlayFile(trunkID,FileName);
                strcpy ( FileName, DJSys_GetInstallDir () );
                strcat ( FileName, "voc\\d15");
                DJVoc_AddIndexPlayFile(trunkID,FileName);

                strcpy ( FileName, DJSys_GetInstallDir () );
                strcat ( FileName, "voc\\d4");
                DJVoc_AddIndexPlayFile(trunkID,FileName);
                strcpy ( FileName, DJSys_GetInstallDir () );
                strcat ( FileName, "voc\\d8");
                DJVoc_AddIndexPlayFile(trunkID,FileName);

                strcpy ( FileName, DJSys_GetInstallDir () );
                strcat ( FileName, "voc\\bank.008");
                DJVoc_AddIndexPlayFile(trunkID,FileName);
                DJVoc_StartIndexPlayFile(trunkID);
                Trunk[trunkID].State = TRK_PLAYRESULT;
                break;
            case '3':
                if(VoiceID>0) DJVoc_StopPlayFile(trunkID);
                DJVoc_InitIndexPlayFile(trunkID);
                strcpy(FileName,DJSys_GetInstallDir());
                strcat(FileName,"voc\\bank.007");
                DJVoc_AddIndexPlayFile(trunkID,FileName);
                strcpy ( FileName, DJSys_GetInstallDir () );
                strcat ( FileName, "voc\\d3");
                DJVoc_AddIndexPlayFile(trunkID,FileName);
                strcpy ( FileName, DJSys_GetInstallDir () );
                strcat ( FileName, "voc\\d7");
                DJVoc_AddIndexPlayFile(trunkID,FileName);
                strcpy ( FileName, DJSys_GetInstallDir () );
                strcat ( FileName, "voc\\d0");
                DJVoc_AddIndexPlayFile(trunkID,FileName);
                strcpy ( FileName, DJSys_GetInstallDir () );
                strcat ( FileName, "voc\\d0");
                DJVoc_AddIndexPlayFile(trunkID,FileName);
                strcpy ( FileName, DJSys_GetInstallDir () );
                strcat ( FileName, "voc\\d0");
                DJVoc_AddIndexPlayFile(trunkID,FileName);

                strcpy ( FileName, DJSys_GetInstallDir () );
                strcat ( FileName, "voc\\bank.008");
                DJVoc_AddIndexPlayFile(trunkID,FileName);
                DJVoc_StartIndexPlayFile(trunkID);
                Trunk[trunkID].State = TRK_PLAYRESULT;
                break;
        default:
                break;
            }
        }
        break;
    case TRK_PLAYRESULT:
        if(DJVoc_CheckIndexPlayEnd(trunkID))
        {
            DJVoc_StopIndexPlayFile(trunkID);
            Trunk[trunkID].State = TRK_HANGUP;
        }
        break;
    case TRK_RECORDFILE:
        VoiceID = DJTrk_GetTrunkPlayID(trunkID);
        if(DJVoc_CheckVoiceEnd(VoiceID))
        {
            DJVoc_StopRecordFile(trunkID);
            Trunk[trunkID].State = TRK_HANGUP;
            break;
        }
        if(DJTrk_GetReciveDtmfNum(trunkID) >= 1)
        {
            if(DJTrk_GetLastDtmfCode(trunkID) == '5')
            {
                DJVoc_StopRecordFile(trunkID);
                Trunk[trunkID].State = TRK_HANGUP;
            }
        }
        break;
    case TRK_PLAYRECORD:
        VoiceID=DJTrk_GetTrunkPlayID(trunkID);
        if(VoiceID<0)
        {
            MessageBox(NULL,"Get Voice ID Error!","Error",MB_OK);
            Trunk[trunkID].State = TRK_HANGUP;
        }
        else
        {
            if(DJVoc_CheckVoiceEnd(VoiceID))
            {
                DJVoc_StopPlayFile(trunkID);
                Trunk[trunkID].State = TRK_HANGUP;
            }
        }
        break;
    case TRK_HANGUP:
        DJNo7_SetChnState(trunkID/30,trunkID%30, CALLEE_SET_CBK );
        Trunk[trunkID].State = TRK_WAITFREE;
        break;
    case TRK_WAITFREE:
        break;

    }//end switch
}