/// <summary>
/// 登出设备
/// </summary>
/// <param name="info">所有操作使用的UseInfo对象</param>
/// <returns>true：操作成功，false：操作失败</returns>
public bool Logout(ref DvrUseInfo info)
{
bool b = false;
//停止回放 Stop playback
if (info.PlaybackId >= 0)
{
b = HikVideoApi.NET_DVR_StopPlayBack(info.PlaybackId);
info.PlaybackId = -1;
}
//停止下载 Stop download
if (info.DownId >= 0)
{
b = HikVideoApi.NET_DVR_StopGetFile(info.DownId);
info.DownId = -1;
}
//注销登录 Logout the device
if (info.UserId >= 0)
{
b = HikApi.NET_DVR_Logout(info.UserId);
info.UserId = -1;
}
return(b);
}
/// <summary>
/// 获取回放进度
/// </summary>
/// <param name="info">执行回放时的UseInfo对象</param>
/// <returns>true:获取成功，false：获取失败，网络异常，或者当完成回放时结束回放失败</returns>
public bool GetPlaybackProgress(ref DvrUseInfo info)
{
uint iOutValue = 0;
int iPos = 0;
IntPtr lpOutBuffer = Marshal.AllocHGlobal(4);
//获取回放进度
if (!HikVideoApi.NET_DVR_PlayBackControl_V40(info.PlaybackId, (uint)PlayBackControlCmd.NET_DVR_PLAYGETPOS, IntPtr.Zero, 0, lpOutBuffer, ref iOutValue))
{
return(false);
}
iPos = (int)Marshal.PtrToStructure(lpOutBuffer, typeof(int));
info.PlaybackProgress = iPos;
if (iPos == 100) //回放结束
{
if (!HikVideoApi.NET_DVR_StopPlayBack(info.PlaybackId))
{
return(false);
}
}
if (iPos == 200) //网络异常，回放失败
{
return(false);
}
Marshal.FreeHGlobal(lpOutBuffer);
return(true);
}
/// <summary>
/// 抓图（在预览时）
/// </summary>
/// <param name="info">登录设备时的UseInfo对象</param>
/// <returns>true：抓图保存成功，false：抓图保存失败</returns>
public bool GetBMPImage(ref DvrUseInfo info)
{
if (info.PlaybackId < 0)
{
return(false);
}
//BMP抓图 Capture a BMP picture
return(HikVideoApi.NET_DVR_PlayBackCaptureFile(info.PlaybackId, info.SaveBMPPath));
}
/// <summary>
/// 撤销报警上传通道
/// </summary>
/// <param name="info">建立报警上传通道时的UserInfo对象</param>
/// <returns>true：成功，false：失败</returns>
public bool CloseAlarmChanV30(ref DvrUseInfo info)
{
if (info.UserId >= 0)
{
return(HikApi.NET_DVR_CloseAlarmChan_V30(info.AlarmId));
}
else
{
return(false);
}
}
/// <summary>
/// 登出设备
/// </summary>
/// <param name="info">所有操作使用的UseInfo对象</param>
/// <returns>true：操作成功，false：操作失败</returns>
public bool Logout(ref DvrUseInfo info)
{
bool b = false;
//注销登录 Logout the device
if (info.UserId >= 0)
{
b = HikApi.NET_DVR_Logout(info.UserId);
info.UserId = -1;
}
return(b);
}
/// <summary>
/// 停止回放
/// </summary>
/// <param name="info">执行回放时使用的UseInfo对象</param>
/// <returns>true：操作成功，false：操作失败</returns>
public bool StopPlayBack(ref DvrUseInfo info)
{
bool b = false;
//停止回放 Stop playback
if (info.PlaybackId >= 0)
{
b = HikVideoApi.NET_DVR_StopPlayBack(info.PlaybackId);
info.PlaybackId = -1;
}
return(b);
}
/// <summary>
/// 停止录像下载
/// </summary>
/// <param name="info">执行下载时的UseInfo对象</param>
/// <returns>true:停止下载执行成功，false：操作执行失败</returns>
private bool StopDownload(ref DvrUseInfo info)
{
if (info.DownId < 0)
{
return(false);
}
if (!HikVideoApi.NET_DVR_StopGetFile(info.DownId))
{
return(false);
}
info.DownId = -1;
return(true);
}
/// <summary>
/// 建立报警上传通道，接收报警信息。
/// </summary>
/// <param name="info">登陆设备时的UserInfo对象</param>
/// <param name="level">布防优先级：0- 一等级（高），1- 二等级（中），2- 三等级（低，保留）</param>
/// <returns>true：成功，false：失败</returns>
public bool SetupAlarmChan_V41(ref DvrUseInfo info, byte level = 1)
{
int alarmId = info.AlarmId;
HikOperate.SetupAlarmChan_V41(info.UserId, ref alarmId, level);
info.AlarmId = alarmId;
if (info.AlarmId < 0)
{
return(false);
}
else
{
return(true);
}
}
/// <summary>
/// 按时间回放录像
/// </summary>
/// <param name="info">登录设备时的UseInfo对象</param>
/// <param name="channel">通道号</param>
/// <param name="Handle">显示图像控件句柄，如PictureBox</param>
/// <param name="startTime">开始时间</param>
/// <param name="endTime">结束时间</param>
/// <returns>true：执行成功，false：执行失败</returns>
public bool PlaybackByTime(ref DvrUseInfo info, int channel, IntPtr Handle, DateTime startTime, DateTime endTime)
{
if (info.PlaybackId >= 0)
{
//如果已经正在回放，先停止回放
if (!HikVideoApi.NET_DVR_StopPlayBack(info.PlaybackId))
{
return(false);
}
info.PlaybackId = -1;
}
NET_DVR_VOD_PARA struVodPara = new NET_DVR_VOD_PARA();
struVodPara.dwSize = (uint)Marshal.SizeOf(struVodPara);
struVodPara.struIDInfo.dwChannel = (uint)iChannelNum[(int)channel]; //通道号 Channel number
struVodPara.hWnd = Handle; //回放窗口句柄
//设置回放的开始时间 Set the starting time to search video files
struVodPara.struBeginTime.dwYear = (uint)startTime.Year;
struVodPara.struBeginTime.dwMonth = (uint)startTime.Month;
struVodPara.struBeginTime.dwDay = (uint)startTime.Day;
struVodPara.struBeginTime.dwHour = (uint)startTime.Hour;
struVodPara.struBeginTime.dwMinute = (uint)startTime.Minute;
struVodPara.struBeginTime.dwSecond = (uint)startTime.Second;
//设置回放的结束时间 Set the stopping time to search video files
struVodPara.struEndTime.dwYear = (uint)endTime.Year;
struVodPara.struEndTime.dwMonth = (uint)endTime.Month;
struVodPara.struEndTime.dwDay = (uint)endTime.Day;
struVodPara.struEndTime.dwHour = (uint)endTime.Hour;
struVodPara.struEndTime.dwMinute = (uint)endTime.Minute;
struVodPara.struEndTime.dwSecond = (uint)endTime.Second;
//按时间回放 Playback by time
info.PlaybackId = HikVideoApi.NET_DVR_PlayBackByTime_V40(info.UserId, ref struVodPara);
if (info.PlaybackId < 0)
{
return(false);
}
uint iOutValue = 0;
return(HikVideoApi.NET_DVR_PlayBackControl_V40(info.PlaybackId, (uint)PlayBackControlCmd.NET_DVR_PLAYSTART, IntPtr.Zero, 0, IntPtr.Zero, ref iOutValue));
}
/// <summary>
/// 根据文件名称下载录像
/// </summary>
/// <param name="info">登陆设备时的UseInfo对象</param>
/// <param name="savePath">保存全路径</param>
/// <returns>true:下载执行成功，false：操作执行失败</returns>
public bool DownloadFileByName(ref DvrUseInfo info, string savePath)
{
//if (info.DownId >= 0)
//{
// //正在下载，请先停止下载
// return false;
//}
//string sVideoFileName; //录像文件保存路径和文件名 the path and file name to save
//sVideoFileName = "Downtest_" + sPlayBackFileName + ".mp4";
//按文件名下载 Download by file name
info.DownId = HikVideoApi.NET_DVR_GetFileByName(info.UserId, info.DownName, savePath);
if (info.DownId < 0)
{
return(false);
}
return(true);
}
/// <summary>
/// 根据时间下载录像文件
/// </summary>
/// <param name="info">登陆设备时的UseInfo对象</param>
/// <param name="channel">通道号</param>
/// <param name="startTime">开始时间</param>
/// <param name="endTime">结束时间</param>
/// <param name="savePath">保存全路径</param>
/// <returns>true：执行成功，false：执行失败</returns>
public bool DownloadFileByTime(ref DvrUseInfo info, int channel, DateTime startTime, DateTime endTime, string savePath)
{
//if (info.DownId >= 0)
// return false;//(uint)iChannelNum[channel]
NET_DVR_PLAYCOND struDownPara = new NET_DVR_PLAYCOND()
{
dwChannel = (uint)channel /*通道号 Channel number */, byDrawFrame = 0, byStreamType = 0
};
//设置下载的开始时间 Set the starting time
struDownPara.struStartTime.dwYear = (uint)startTime.Year;
struDownPara.struStartTime.dwMonth = (uint)startTime.Month;
struDownPara.struStartTime.dwDay = (uint)startTime.Day;
struDownPara.struStartTime.dwHour = (uint)startTime.Hour;
struDownPara.struStartTime.dwMinute = (uint)startTime.Minute;
struDownPara.struStartTime.dwSecond = (uint)startTime.Second;
//设置下载的结束时间 Set the stopping time
struDownPara.struStopTime.dwYear = (uint)endTime.Year;
struDownPara.struStopTime.dwMonth = (uint)endTime.Month;
struDownPara.struStopTime.dwDay = (uint)endTime.Day;
struDownPara.struStopTime.dwHour = (uint)endTime.Hour;
struDownPara.struStopTime.dwMinute = (uint)endTime.Minute;
struDownPara.struStopTime.dwSecond = (uint)endTime.Second;
//按时间下载 Download by time
info.DownId = HikVideoApi.NET_DVR_GetFileByTime_V40(info.UserId, savePath, ref struDownPara);
if (info.DownId < 0)
{
return(false);
}
uint iOutValue = 0;
if (!HikVideoApi.NET_DVR_PlayBackControl_V40(info.DownId, (uint)PlayBackControlCmd.NET_DVR_PLAYSTART, IntPtr.Zero, 0, IntPtr.Zero, ref iOutValue))
{
int x = HikOperate.GetLastError();
return(false);
}
return(true);
}
/// <summary>
/// 获取模拟通道信息
/// </summary>
/// <param name="info">登录设备时的UseInfo对象</param>
/// <returns>通道属性对象集合</returns>
private List <ChannelState> GetAnalogChannelInfo(ref DvrUseInfo info)
{
NET_DVR_IPPARACFG_V40 m_struIpParaCfgV40 = new NET_DVR_IPPARACFG_V40();
NET_DVR_DEVICEINFO_V30 deviceInfo = new NET_DVR_DEVICEINFO_V30();
List <ChannelState> states = new List <ChannelState>();
uint dwSize = (uint)Marshal.SizeOf(m_struIpParaCfgV40);
IntPtr ptrIpParaCfgV40 = Marshal.AllocHGlobal((Int32)dwSize);
Marshal.StructureToPtr(m_struIpParaCfgV40, ptrIpParaCfgV40, false);
uint dwReturn = 0;
if (!HikApi.NET_DVR_GetDVRConfig(info.UserId, NET_DVR_GET_IPPARACFG_V40, -1, ptrIpParaCfgV40, dwSize, ref dwReturn))
{
return(states);
}
else
{
m_struIpParaCfgV40 = (NET_DVR_IPPARACFG_V40)Marshal.PtrToStructure(ptrIpParaCfgV40, typeof(NET_DVR_IPPARACFG_V40));
for (int i = 0; i < dwAChanTotalNum; i++)
{
ChannelState state = new ChannelState()
{
Num = i + 1, IsIpChannel = false
};
if (m_struIpParaCfgV40.byAnalogChanEnable[i] == 0)
{
state.IsEnabled = false; //通道已被禁用 This channel has been disabled
}
else
{
state.IsEnabled = true; //通道处于启用状态
}
states.Add(state);
iChannelNum[i] = i + (int)deviceInfo.byStartChan;
}
}
Marshal.FreeHGlobal(ptrIpParaCfgV40);
return(states);
}
/// <summary>
/// 按时文件名放录像
/// </summary>
/// <param name="info">登录设备时的UseInfo对象</param>
/// <param name="Handle">显示图像控件句柄，如PictureBox</param>
/// <returns>true：执行成功，false：执行失败</returns>
public bool PlaybackByName(ref DvrUseInfo info, IntPtr Handle)
{
if (info.PlaybackId >= 0)
{
//如果已经正在回放，先停止回放
if (!HikVideoApi.NET_DVR_StopPlayBack(info.PlaybackId))
{
return(false);
}
info.PlaybackId = -1;
}
//按文件名回放
info.PlaybackId = HikVideoApi.NET_DVR_PlayBackByName(info.UserId, info.PlaybackName, Handle);
if (info.PlaybackId < 0)
{
return(false);
}
uint iOutValue = 0;
return(HikVideoApi.NET_DVR_PlayBackControl_V40(info.PlaybackId, (uint)PlayBackControlCmd.NET_DVR_PLAYSTART, IntPtr.Zero, 0, IntPtr.Zero, ref iOutValue));
}
/// <summary>
/// 获取下载进度
/// </summary>
/// <param name="info">执行下载时的UseInfo对象</param>
/// <returns>true:获取成功，false：获取失败，网络异常，或者当完成下载时结束下载失败</returns>
public bool GetDownProgress(ref DvrUseInfo info)
{
//获取下载进度
int iPos = HikVideoApi.NET_DVR_GetDownloadPos(info.DownId);
info.DownProgress = iPos;
if (iPos == 100) //下载完成
{
HikVideoApi.NET_DVR_StopGetFile(info.DownId); //停止异常
//info.DownId = -1;
//if (!HikDvrApi.NET_DVR_StopGetFile(info.DownId))//停止异常
// return false;
}
else if (iPos == 200 || iPos == -1) //网络异常，下载失败
{
HikVideoApi.NET_DVR_StopGetFile(info.DownId); //停止异常
//info.DownId = -1;
return(false);
}
//else
// return false;
return(true);
}
/// <summary>
/// 登录设备
/// </summary>
/// <param name="info">登录设备所需的信息</param>
/// <returns>true：成功，false：失败</returns>
public bool Login(ref DvrUseInfo info)
{
bool b = false;
if (info.UserId <= -1)
{
string DVRIPAddress = info.DvrIp; //设备IP地址或者域名
short DVRPortNumber = short.Parse(info.DvrPoint.ToString()); //设备服务端口号
string DVRUserName = info.UserName; //设备登录用户名
string DVRPassword = info.UserPwd; //设备登录密码
NET_DVR_DEVICEINFO_V30 DeviceInfo = new NET_DVR_DEVICEINFO_V30();
//登录设备 Login the device
info.UserId = HikApi.NET_DVR_Login_V30(DVRIPAddress, DVRPortNumber, DVRUserName, DVRPassword, ref DeviceInfo);
if (info.UserId < 0)
{
b = false;
}
else
{
b = true;
}
}
return(b);
}
/// <summary>
/// 远程控制
/// </summary>
/// <param name="useInfo">登录设备时的UseInfo对象</param>
/// <param name="control">控制类型</param>
/// <param name="lpInBuffer">窗口号或者解码文件信息</param>
/// <returns>成功：true，失败：false</returns>
public bool RemoteControl(ref DvrUseInfo useInfo, RemoteControl control, IntPtr lpInBuffer)
{
return(HikApi.NET_DVR_RemoteControl(useInfo.UserId, (uint)control, lpInBuffer, 0));
}
/// <summary>
/// 获取IP通道信息
/// </summary>
/// <param name="info">登录设备时的UseInfo对象</param>
/// <returns>通道属性对象集合</returns>
private List <ChannelState> GetIPChannelInfo(ref DvrUseInfo info)
{
NET_DVR_IPPARACFG_V40 m_struIpParaCfgV40 = new NET_DVR_IPPARACFG_V40();
NET_DVR_GET_STREAM_UNION m_unionGetStream = new NET_DVR_GET_STREAM_UNION();
NET_DVR_IPCHANINFO m_struChanInfo = new NET_DVR_IPCHANINFO();
List <ChannelState> states = new List <ChannelState>();
uint dwSize = (uint)Marshal.SizeOf(m_struIpParaCfgV40);
IntPtr ptrIpParaCfgV40 = Marshal.AllocHGlobal((Int32)dwSize);
Marshal.StructureToPtr(m_struIpParaCfgV40, ptrIpParaCfgV40, false);
uint dwReturn = 0;
if (!HikApi.NET_DVR_GetDVRConfig(info.UserId, NET_DVR_GET_IPPARACFG_V40, -1, ptrIpParaCfgV40, dwSize, ref dwReturn))
{
return(states);
}
else
{
m_struIpParaCfgV40 = (NET_DVR_IPPARACFG_V40)Marshal.PtrToStructure(ptrIpParaCfgV40, typeof(NET_DVR_IPPARACFG_V40));
byte byStreamType;
for (int i = 0; i < m_struIpParaCfgV40.dwDChanNum; i++)
{
ChannelState state = new ChannelState();
iChannelNum[i + dwAChanTotalNum] = i + (int)m_struIpParaCfgV40.dwStartDChan;
byStreamType = m_struIpParaCfgV40.struStreamMode[i].byGetStreamType;
m_unionGetStream = m_struIpParaCfgV40.struStreamMode[i].uGetStream;
switch (byStreamType)
{
//目前NVR仅支持 0- 直接从设备取流一种方式
case 0:
dwSize = (uint)Marshal.SizeOf(m_unionGetStream);
IntPtr ptrChanInfo = Marshal.AllocHGlobal((Int32)dwSize);
Marshal.StructureToPtr(m_unionGetStream, ptrChanInfo, false);
m_struChanInfo = (NET_DVR_IPCHANINFO)Marshal.PtrToStructure(ptrChanInfo, typeof(NET_DVR_IPCHANINFO));
state.Num = i + 1;
state.IsIpChannel = true;
if (m_struChanInfo.byIPID == 0)
{
state.IsNull = true; //通道空闲，没有添加前端设备
}
else
{
state.IsNull = false;
if (m_struChanInfo.byEnable == 0)
{
state.IsOnline = false; //通道不在线
}
else
{
state.IsOnline = true; //通道在线
}
}
Marshal.FreeHGlobal(ptrChanInfo);
states.Add(state);
break;
default:
break;
}
}
}
Marshal.FreeHGlobal(ptrIpParaCfgV40);
return(states);
}
//private void Preview(DvrUseInfo info)
//{
// HikVideoApi.NET_DVR_StopRealPlay(info.RealId);
// var hwnd = ptzImage.Handle;
// NET_DVR_PREVIEWINFO lpPreviewInfo = new NET_DVR_PREVIEWINFO();
// lpPreviewInfo.hPlayWnd = hwnd;//预览窗口
// lpPreviewInfo.lChannel = cbxPTZChannel.SelectedIndex + 1;//预te览的设备通道
// lpPreviewInfo.dwStreamType = 0;//码流类型：0-主码流，1-子码流，2-码流3，3-码流4，以此类推
// lpPreviewInfo.dwLinkMode = 0;//连接方式：0- TCP方式，1- UDP方式，2- 多播方式，3- RTP方式，4-RTP/RTSP，5-RSTP/HTTP
// lpPreviewInfo.bBlocked = true; //0- 非阻塞取流，1- 阻塞取流
// lpPreviewInfo.dwDisplayBufNum = 15; //播放库播放缓冲区最大缓冲帧数
// REALDATACALLBACK RealData = new REALDATACALLBACK(RealDataCallBack);//预览实时流回调函数
// IntPtr pUser = new IntPtr();//用户数据
// 打开预览 Start live view
// info.RealId = HikVideoApi.NET_DVR_RealPlay_V40(info.UserId, ref lpPreviewInfo, null/*RealData*/, pUser);
// realId = info.RealId;
// dvrUseInfos.Find(o => o.DvrIp == cbxPTZIp.Text).RealId = info.RealId;
// TxtPTZMsg(AppLogHelper.GetLogStr(string.Format("DvrIp：{0} 端口：{1} 名称：{2} {3} ({4})", info.DvrIp, info.DvrPoint, info.DvrName, realId >= 0 ? "预览图像成功" : "预览图像失败:" + HikOperate.GetLastError(), DateTime.Now), "图像预览"));
//}
#endregion
#region 录像查找
/// <summary>
/// 录像文件查找
/// </summary>
/// <param name="info">登录设备时的UseInfo对象</param>
/// <param name="channel">通道号</param>
/// <param name="startTime">开始时间</param>
/// <param name="endTime">结束时间</param>
/// <param name="useCardNo">是否带ATM信息进行查询</param>
/// <param name="fileType">录象文件类型（根据dwUseCardNo参数是否带卡号查找分为两类,参考枚举 NocardSelectFileType 和 UseCardSelectFileType）</param>
/// <param name="isLocked">是否锁定：0-未锁定文件，1-锁定文件，0xff表示所有文件（包括锁定和未锁定）</param>
/// <returns>返回文件列表</returns>
public List <BackFile> SearchBackFile(ref DvrUseInfo info, int channel, DateTime startTime, DateTime endTime, uint useCardNo = (uint)UseCardSelectWay.带ATM信息, uint fileType = 0xff, uint isLocked = 0xff)
{
List <BackFile> files = new List <BackFile>();
NET_DVR_FILECOND_V40 struFileCond_V40 = new NET_DVR_FILECOND_V40()
{
lChannel = channel, /*通道号 Channel number*/ dwFileType = fileType, /*0xff-全部，0-定时录像，1-移动侦测，2-报警触发，...*/ dwIsLocked = isLocked /*0-未锁定文件，1-锁定文件，0xff表示所有文件（包括锁定和未锁定）*/, dwUseCardNo = useCardNo
};
//设置录像查找的开始时间 Set the starting time to search video files
struFileCond_V40.struStartTime.dwYear = (uint)startTime.Year;
struFileCond_V40.struStartTime.dwMonth = (uint)startTime.Month;
struFileCond_V40.struStartTime.dwDay = (uint)startTime.Day;
struFileCond_V40.struStartTime.dwHour = (uint)startTime.Hour;
struFileCond_V40.struStartTime.dwMinute = (uint)startTime.Minute;
struFileCond_V40.struStartTime.dwSecond = (uint)startTime.Second;
//设置录像查找的结束时间 Set the stopping time to search video files
struFileCond_V40.struStopTime.dwYear = (uint)endTime.Year;
struFileCond_V40.struStopTime.dwMonth = (uint)endTime.Month;
struFileCond_V40.struStopTime.dwDay = (uint)endTime.Day;
struFileCond_V40.struStopTime.dwHour = (uint)endTime.Hour;
struFileCond_V40.struStopTime.dwMinute = (uint)endTime.Minute;
struFileCond_V40.struStopTime.dwSecond = (uint)endTime.Second;
//开始录像文件查找 Start to search video files
int m_lFindHandle = HikVideoApi.NET_DVR_FindFile_V40(info.UserId, ref struFileCond_V40);
if (m_lFindHandle >= 0)
{
NET_DVR_FINDDATA_V30 struFileData = new NET_DVR_FINDDATA_V30();;
while (true)
{
//逐个获取查找到的文件信息 Get file information one by one.
int result = HikVideoApi.NET_DVR_FindNextFile_V30(m_lFindHandle, ref struFileData);
if (result == (int)SelectFileState.NET_DVR_ISFINDING) //正在查找请等待 Searching, please wait
{
continue;
}
else if (result == (int)SelectFileState.NET_DVR_FILE_SUCCESS) //获取文件信息成功 Get the file information successfully
{
files.Add(new BackFile()
{
FileName = struFileData.sFileName, StartTime = new DateTime((int)struFileData.struStartTime.dwYear, (int)struFileData.struStartTime.dwMonth, (int)struFileData.struStartTime.dwDay, (int)struFileData.struStartTime.dwHour, (int)struFileData.struStartTime.dwMinute, (int)struFileData.struStartTime.dwSecond), EndTime = new DateTime((int)struFileData.struStopTime.dwYear, (int)struFileData.struStopTime.dwMonth, (int)struFileData.struStopTime.dwDay, (int)struFileData.struStopTime.dwHour, (int)struFileData.struStopTime.dwMinute, (int)struFileData.struStopTime.dwSecond), FileSize = (int)struFileData.dwFileSize, FileType = (int)struFileData.byFileType, Locked = (int)struFileData.byLocked, CardNum = struFileData.sCardNum
});
}
else if (result == (int)SelectFileState.NET_DVR_FILE_NOFIND || result == (int)SelectFileState.NET_DVR_NOMOREFILE)
{
break; //未查找到文件或者查找结束，退出 No file found or no more file found, search is finished
}
else
{
break;
}
}
HikVideoApi.NET_DVR_FindClose_V30(m_lFindHandle);
}
else
{
int error = HikOperate.GetLastError();
if (error == 19 || error == 4)
{
HikVideoApi.NET_DVR_FindClose_V30(m_lFindHandle);
return(files);
}
if (error == 7 || error == 73)
{
return(null);
}
}
return(files);
}
/// <summary>
/// 正放切为倒放
/// </summary>
/// <param name="info">执行回放时的UseInfo对象</param>
/// <returns>true：执行成功，false：执行失败</returns>
public bool PlaybackReverse(ref DvrUseInfo info)
{
uint iOutValue = 0;
return(HikVideoApi.NET_DVR_PlayBackControl_V40(info.PlaybackId, (uint)PlayBackControlCmd.NET_DVR_PLAY_REVERSE, IntPtr.Zero, 0, IntPtr.Zero, ref iOutValue));
}
/// <summary>
/// 倒放切为正放
/// </summary>
/// <param name="info">执行回放时的UseInfo对象</param>
/// <returns>true：执行成功，false：执行失败</returns>
public bool PlaybackForWard(ref DvrUseInfo info)
{
uint iOutValue = 0;
return(HikVideoApi.NET_DVR_PlayBackControl_V40(info.PlaybackId, (uint)PlayBackControlCmd.NET_DVR_PLAY_FORWARD, IntPtr.Zero, 0, IntPtr.Zero, ref iOutValue));
}
/// <summary>
/// 恢复播放
/// </summary>
/// <param name="info">执行回放时的UseInfo对象</param>
/// <returns>true：执行成功，false：执行失败</returns>
public bool PlayReStart(ref DvrUseInfo info)
{
uint iOutValue = 0;
return(HikVideoApi.NET_DVR_PlayBackControl_V40(info.PlaybackId, (uint)PlayBackControlCmd.NET_DVR_PLAYRESTART, IntPtr.Zero, 0, IntPtr.Zero, ref iOutValue));
}
/// <summary>
/// 控制录像回放状态
/// </summary>
/// <param name="info">执行回放时的UseInfo对象</param>
/// <param name="cmd">控制录像回放状态命令</param>
/// <returns>true：执行成功，false：执行失败</returns>
public bool PlaybackControl(ref DvrUseInfo info, PlayBackControlCmd cmd)
{
uint iOutValue = 0;
return(HikVideoApi.NET_DVR_PlayBackControl_V40(info.PlaybackId, (uint)cmd, IntPtr.Zero, 0, IntPtr.Zero, ref iOutValue));
}