public NvrPlayback(NvrUserSession userSession, bool isDebugEnabled)
{
NvrUserSession = userSession;
isDebugEnabled_ = isDebugEnabled;
// Init timer, that will emit and take number of played frames from NVR SDK
playedFramesTimer_ = new Timer(
state => {
uint unused = 0;
IntPtr outBuffer = IntPtr.Zero;
try {
// Get playback frame count
outBuffer = Marshal.AllocHGlobal(4);
bool isOk = CHCNetSDK.NET_DVR_PlayBackControl_V40(playHandle_, CHCNetSDK.NET_DVR_PLAYGETFRAME, IntPtr.Zero, 0, outBuffer, ref unused);
int frames = (int)Marshal.PtrToStructure(outBuffer, typeof(int));
if (isOk && frames > 0)
{
LastPlayedFrame = frames;
OnFramePlayed?.BeginInvoke(this, frames, null, null);
}
} finally {
Marshal.FreeHGlobal(outBuffer);
}
});
}
/// <summary>
/// Start Preview in realtime.
/// <para><paramref name="playWndHandle"/> - window handle, on fitch will be drawing.</para>
/// <para><paramref name="previewSettings"/> - preview settings.</para>
/// </summary>
public void StartPreview(IntPtr playWndHandle, NvrPreviewSettings previewSettings)
{
if (livePlayer_.RealPlayHandle != -1)
{
throw new NvrBadLogicException("Call StopPreview before calling StartPreview");
}
if (!NvrUserSession.IsSessionValid())
{
throw new NvrBadLogicException("Call StartPreview when NvrUserSession is invalid");
}
livePlayer_ = new LivePlayer(playWndHandle, previewSettings);
CHCNetSDK.NET_DVR_PREVIEWINFO previewInfo = new CHCNetSDK.NET_DVR_PREVIEWINFO()
{
lChannel = NvrUserSession.UserSessionState.SelectedChannelNum,
dwStreamType = livePlayer_.PreviewSettings.StreamType,
dwLinkMode = (uint)livePlayer_.PreviewSettings.LinkMode,
bBlocked = livePlayer_.PreviewSettings.IsBlocked,
dwDisplayBufNum = livePlayer_.PreviewSettings.DisplayBufNum,
byPreviewMode = (byte)livePlayer_.PreviewSettings.PreviewMode
};
switch (previewSettings.PreviewHandleMode)
{
case PreviewHandleType.Direct:
livePlayer_.RealDataCallBackFunc = null;
previewInfo.hPlayWnd = livePlayer_.PlayWndHandlePtr;
break;
case PreviewHandleType.CallBack:
livePlayer_.RealDataCallBackFunc = new CHCNetSDK.REALDATACALLBACK(realDataCallBack); // Real-time stream callback function
previewInfo.hPlayWnd = IntPtr.Zero;
break;
}
livePlayer_.RealPlayHandle = CHCNetSDK.NET_DVR_RealPlay_V40(NvrUserSession.UserSessionState.UserId, ref previewInfo, livePlayer_.RealDataCallBackFunc, IntPtr.Zero);
if (livePlayer_.RealPlayHandle == -1)
{
throw new NvrSdkException(CHCNetSDK.NET_DVR_GetLastError(), "NET_DVR_RealPlay_V40 failed: " + livePlayer_.RealPlayHandle);
}
if (previewSettings.PreviewHandleMode == PreviewHandleType.Direct)
{
livePlayer_.DrawCallBackFunc = new CHCNetSDK.DRAWFUN(drawCallBack);
if (!CHCNetSDK.NET_DVR_RigisterDrawFun(livePlayer_.RealPlayHandle, livePlayer_.DrawCallBackFunc, 0))
{
invokeOnPreviewErrorEvent(PlayCtrl.PlayM4_GetLastError(livePlayer_.RealPlayPort), "NET_DVR_RigisterDrawFun failed");
}
}
debugInfo("NET_DVR_RealPlay_V40 succ!");
}
public NvrRecordLabels(NvrUserSession userSession, bool isDebugEnabled)
{
NvrUserSession = userSession;
isDebugEnabled_ = isDebugEnabled;
}
public NvrLivePlayer(NvrUserSession userSession, bool isDebugEnabled)
{
NvrUserSession = userSession;
isDebugEnabled_ = isDebugEnabled;
livePlayer_ = LivePlayer.Default();
}
public NvrSettings(NvrUserSession userSession, bool isDebugEnabled)
{
NvrUserSession = userSession;
isDebugEnabled_ = isDebugEnabled;
}
