/// <summary>
/// 查询单个录像播放的进度
/// </summary>
/// <param name="replayStatus"></param>
private void QueryReplayStatus(RelayStatusModel replayStatus)
{
if (replayStatus == null)
{
return;
}
//非播放状态下的录像回放无需进行进度查询
if (!IsNeedQueryReplayPosition(replayStatus))
{
return;
}
//查询失败或得到错误的结果时不做任何处理
DateTime replayDateTime = ReplayAdapter.GetReplayPositon(replayStatus.PlayingHandle);
if (replayDateTime == DateTime.MinValue)
{
return;
}
//如果播放时间进度已经超过录像文件的最大时间，则通知消息订阅者停止播放
if (VideoRecordCache.IsTimeBeyondTimeRangeOfVideoFiles(replayStatus.Camera.ChannelID, replayDateTime))
{
ReplayPositionChangedEvent?.Invoke(replayStatus.PlayingScreenHandle, DateTime.MaxValue);
return;
}
ReplayPositionChangedEvent?.Invoke(replayStatus.PlayingScreenHandle, replayDateTime);
}
public bool SetReplayPosition(IntPtr screenHandle, DateTime replayTime)
{
RelayStatusModel replayStatus;
if (!TryGetReplayStatusByScreenHandle(screenHandle, out replayStatus))
{
return(false);
}
if (!VideoRecordCache.HasTimeSpecificRecordFile(replayStatus.Camera.ChannelID, replayTime))
{
ReplayPositionChangedEvent?.Invoke(screenHandle, DateTime.MaxValue);
return(false);
}
if (replayStatus.StartPlayDateTime < replayTime)//跳放的时间点在录像播放起始时间点后，则直接跳放
{
return(DirectlySetReplayPosition(replayStatus, replayTime));
}
else//跳放的时间点在录像播放起始点前，则需要重新播放
{
return(RestartReplay(screenHandle, replayTime));
}
}
