public void Close()
{
CancelPreview();
if (reader != null)
{
Reader.Close();
}
reader = null;
bitmapDirty = true;
}
public DataBlock FetchDataBlock(OmReader reader, int blockNumber)
{
lock (this)
{
if (cache.ContainsKey(blockNumber))
{
// Find block in cache
LinkedListNode<int> node = lruNodes[blockNumber];
// Move to end of LRU
lru.Remove(node);
lru.AddLast(node);
// Return block
return cache[blockNumber];
}
}
if (reader == null)
{
return null;
}
// Read block
DataBlock dataBlock = DataBlock.FromReader(reader, blockNumber);
lock (this)
{
// Add to cache
cache[blockNumber] = dataBlock;
LinkedListNode<int> node = new LinkedListNode<int>(blockNumber);
lruNodes[blockNumber] = node;
lru.AddLast(node);
// Trim cache to maximum size
while (lru.Count > cacheSize)
{
int evict = lru.First.Value;
lru.RemoveFirst();
lruNodes.Remove(evict);
cache.Remove(evict);
}
//// Push in to aggregates
//int i = ((1 << (levels - 1)) - 1) + blockNumber;
//for (; ; )
//{
// aggregates[i].Add(dataBlock.Aggregate);
// if (i == 0) { break; }
// i = ((i - 1) / 2);
//}
// Return block
return dataBlock;
}
}
//TS - TODO - Doesn't check if it is already open or not.
public static void Close(OmReader reader)
{
OmApi.OmReaderClose(reader.Handle);
}
public static DataBlock FromReader(OmReader reader, int blockNumber)
{
try
{
reader.Seek(blockNumber);
short[] values = reader.ReadBlock();
if (values == null)
{
return null;
}
DateTime firstTime = reader.TimeForSample(0);
DateTime lastTime;
float light = reader.Light;
float temp = reader.Temp;
float battpercent = reader.Batt;
float battraw = reader.BattRaw;
if (values.Length == 0) { lastTime = firstTime; }
else { lastTime = reader.TimeForSample(values.Length - 1); }
return new DataBlock(firstTime, lastTime, light, temp, battpercent, battraw, values);
}
catch (Exception)
{
return null;
}
}
//TS - TODO - Doesn't check if it is already open or not.
public static void Close(OmReader reader)
{
OmApi.OmReaderClose(reader.Handle);
}
