private IDictionary <int, byte[]> GetImages(DataType dt, int second)
{
try
{
IDictionary <int, byte[]> ret = new Dictionary <int, byte[]>();
if (screenIndexList == null)
{
if (colhelperScreenImage == null)
{
colhelperScreenImage = GetCOLFilerHelper(dt);
}
screenIndexList = colhelperScreenImage.GetIndexList();
}
List <Index> screenImageIndexs = screenIndexList.GetImageIndexBySecond(second);
foreach (Index index in screenImageIndexs)
{
byte[] buf = colhelperScreenImage.SeekData(index.DataOffset, (int)index.DataLength);
ret.Add(new KeyValuePair <int, byte[]>((index.Row * Constants.MAX_ROW_NO + index.Col), buf));
}
return(ret);
}
catch (Exception ex)
{
return(null);
}
finally
{
}
}
List <T> GetDataList <T>(COLFilerHelper colhelper, List <Index> indexlist, IDictionary <int, int> mapindex, int streamSize, TimeSpan tspan)
{
List <T> result = new List <T>();
Index indeximage = null;
if (mapindex.ContainsKey((int)tspan.TotalMinutes))
{
indeximage = indexlist[mapindex[(int)tspan.TotalMinutes]];
}
try
{
if (indeximage != null && indeximage.DataLength > 0)
{
byte[] buf = colhelper.SeekData(indeximage.DataOffset, (int)indeximage.DataLength);
if (buf.Length == indeximage.DataLength)
{
result = Read <T>(streamSize, buf);
}
}
}
catch (Exception e)
{
}
return(result);
}
