public void TestFolderManager_GetVideoHeader()
{
Assert.IsNull(FolderManager.GetVideoHeader("", DateTime.MinValue, DateTime.MaxValue));
Assert.IsNull(FolderManager.GetVideoHeader(@"D:\视频录像\videoId_2\", DateTime.MinValue, DateTime.MaxValue));
DateTime start = new DateTime(2016, 3, 22, 23, 51, 01, 156);
Assert.IsNull(FolderManager.GetVideoHeader(@"D:\视频录像\videoId_2\2016\03\22", start.Subtract(TimeSpan.FromMinutes(5)), start));
Assert.IsNotNull(FolderManager.GetVideoHeader(@"D:\视频录像\videoId_2\2016\03\22", start, start.AddMinutes(3)));
}
/// <summary>获取某通道视频在某时段对应文件的首个视频头</summary>
public static VideoBasePacket GetVideoBaseInfom(string videoId, int streamId, DateTime beginTime, DateTime endTime)
{
string path = GlobalData.VideoPath(videoId, streamId);
DateTime[] dates = GetFolderPaths(videoId, streamId, beginTime, endTime);
foreach (var date in dates)
{
var header = FolderManager.GetVideoHeader(Path.Combine(path, GlobalProcess.FolderPath(date)), beginTime, endTime);
if (header != null && header.Type == DataType.SysHead)
{
long length = getLength(path, dates, beginTime, endTime, StreamPacket.Encode(header).Length + 4);
return(new VideoBasePacket(header.Buffer, header.Time, length));
}
}
return(null);
}
