Delphi XE10编写的《海康摄像机SDK测试DEMO》

type TShowStr = record X: Word; Y: Word; S: array [0 .. 43] of AnsiChar; end; type TCamera = record pHWND: HWND; strict private aCam: LongInt; g_nPort: LongInt; struDeviceInfo: NET_DVR_DEVICEINFO_V30; lRealHandle: LongInt; struPlayInfo: NET_DVR_CLIENTINFO; pUser: Pointer; dwRet: Integer; public property ErrCode: Integer read dwRet; procedure HCLogin(IP, User, Psd: String; Port: Word); procedure HCPlay(aHWND: HWND); procedure HCAddChar(str: TArray<TShowStr>); procedure HCAddChar_V30(str: TArray<TShowStr>); function HCGetJpeg(JpgName: String; JpgSize: Word = 0; JpgQua: Word = 19): Boolean; procedure HCStop; procedure HCLogout; end; {$ENDIF //} implementation procedure TCamera.HCLogin(IP, User, Psd: String; Port: Word); begin NET_DVR_Init(); lRealHandle := -1; dwRet := 0; aCam := NET_DVR_Login_V30(PAnsiChar(ansistring(IP)), Port, PAnsiChar(ansistring(User)), PAnsiChar(ansistring(Psd)), @struDeviceInfo); dwRet := NET_DVR_GetLastError; end; procedure TCamera.HCPlay(aHWND: HWND); begin struPlayInfo.lChannel := 1; struPlayInfo.lLinkMode := 0; struPlayInfo.sMultiCastIP := NIL; struPlayInfo.hPlayWnd := aHWND; lRealHandle := NET_DVR_RealPlay_V30(aCam, @struPlayInfo, nil, pUser, true); dwRet := NET_DVR_GetLastError; end; procedure TCamera.HCAddChar(str: TArray<TShowStr>); var i: Integer; aStr: NET_DVR_SHOWSTRING; begin if length(str) > MAX_STRINGNUM then begin setlength(str, MAX_STRINGNUM); end; for i := 0 to length(str) - 1 do begin aStr.struStringInfo[i].wShowString := 1; aStr.struStringInfo[i].wStringSize := length(str[i].S); aStr.struStringInfo[i].wShowStringTopLeftX := str[i].X; aStr.struStringInfo[i].wShowStringTopLeftY := str[i].Y; move(str[i].S[0], aStr.struStringInfo[i].sString[0], length(str[i].S)); end; aStr.dwSize := sizeof(aStr); NET_DVR_SetDVRConfig(aCam, NET_DVR_SET_SHOWSTRING, 1, @aStr, sizeof(NET_DVR_SHOWSTRING)); dwRet := NET_DVR_GetLastError; end; procedure TCamera.HCAddChar_V30(str: TArray<TShowStr>); var i: Integer; aStr: NET_DVR_SHOWSTRING_V30; begin if length(str) > MAX_STRINGNUM_V30 then begin setlength(str, MAX_STRINGNUM_V30); end; for i := 0 to length(str) - 1 do begin aStr.struStringInfo[i].wShowString := 1; aStr.struStringInfo[i].wStringSize := length(str[i].S); aStr.struStringInfo[i].wShowStringTopLeftX := str[i].X; aStr.struStringInfo[i].wShowStringTopLeftY := str[i].Y; move(str[i].S[0], aStr.struStringInfo[i].sString[0], length(str[i].S)); end; aStr.dwSize := sizeof(aStr); NET_DVR_SetDVRConfig(aCam, NET_DVR_SET_SHOWSTRING_V30, 1, @aStr, sizeof(NET_DVR_SET_SHOWSTRING_V30)); dwRet := NET_DVR_GetLastError; end; function TCamera.HCGetJpeg(JpgName: String; JpgSize: Word = 0; JpgQua: Word = 19): Boolean; var aJpg: NET_DVR_JPEGPARA; begin aJpg.wPicSize := JpgSize; aJpg.wPicQuality := JpgQua; if aCam >= 0 then begin result := NET_DVR_CaptureJPEGPicture(aCam, 1, aJpg, PAnsiChar(ansistring(JpgName))); dwRet := NET_DVR_GetLastError(); end else result := false; dwRet := NET_DVR_GetLastError; end; procedure TCamera.HCStop; begin if lRealHandle >= 0 then begin NET_DVR_StopRealPlay(lRealHandle); lRealHandle := -1; end; PlayM4_CloseStream(g_nPort); PlayM4_FreePort(g_nPort); end; procedure TCamera.HCLogout; begin if lRealHandle > -1 then begin HCStop; end; if aCam >= 0 then begin NET_DVR_Logout_V30(aCam); aCam := -1; end; NET_DVR_Cleanup(); end;