/// <summary>
/// Determine and create the directory where the raw data is saved in 1-hour chunks.
/// </summary>
private void DetermineFilePath()
{
if (isActive)
{
if (presentHour != DateTime.Now.Hour)
{
if (bwPLFormat != null)
{
bwPLFormat.CloseFile();
}
presentHour = DateTime.Now.Hour;
// Need to create a new directory and switch the file name
dayPath = DirectoryStructure.DayDirectoryToUse(aRootPathName);
// Make sure hour directory exists
currentDataFile = dayPath + "\\" + presentHour + "\\";
if (!System.IO.Directory.Exists(currentDataFile))
{
System.IO.Directory.CreateDirectory(currentDataFile);
}
currentDataFile = currentDataFile + FILE_TYPE_MONIKER + "." +
DirectoryStructure.GetDate() + "." + COMP_ID + "." + FILE_EXT;
bwPLFormat = new ByteWriter(currentDataFile, true);
bwPLFormat.OpenFile();
// Ensure that the first data point in the new file will start
// with the full, rather than differential, timecode info.
isForceTimestampSave = true;
}
}
}
/// <summary>
/// Saves data to a binary file
/// </summary>
public override void Save()
{
#if (PocketPC)
if (_Saving)
{
#region Determine the head of the data buffer
int currentHead = -1;
currentHead = this._Decoder._Head;
#endregion Determine the head of the data buffer
#region Check if a new binary file need to be created
DateTime now = DateTime.Now;
if (presentHour != now.Hour) //((bw==null)||(presentHour != DateTime.Now.Hour)|| (presentMinute != DateTime.Now.Minute) || (presentSecond!= DateTime.Now.Second))
{
if (bw != null)
{
bw.CloseFile();
}
presentHour = now.Hour;
presentMinute = now.Minute;
presentSecond = now.Second;
// Need to create a new directory and switch the file name
dayPath = DirectoryStructure.DayDirectoryToUse(this._RootStorageDirectory);
// Make sure hour directory exists
currentDataFile = dayPath + "\\" + presentHour + "\\";
if (!System.IO.Directory.Exists(currentDataFile))
{
System.IO.Directory.CreateDirectory(currentDataFile);
}
currentDataFile = currentDataFile + FILE_TYPE_PREFIX + "." +
DirectoryStructure.GetDate() + "." + this._ID + "." + FILE_EXT;
bw = new ByteWriter(currentDataFile, true);
bw.OpenFile(32768);
// Ensure that the first data point in the new file will start
// with the full, rather than differential, timecode info.
isForceTimestampSave = true;
}
#endregion Check if a new binary file need to be created
// Write data as long as the tail is not equal to the head
while (tail != currentHead)
{
#region Populate the acceleration data that need to be written
data = ((AccelerationData)this._Decoder._Data[tail]);
#endregion Populate the acceleration data that need to be written
#region Check for timestamp errors
aUnixTime = data.UnixTimeStamp;
if (aUnixTime < lastUnixTime)
{
lastUnixTime = aUnixTime;
Logger.Error("Accelerometer: Save: Data overwritten without saving Accelerometer.cs Save " + this._ID + " " + aUnixTime + " " + lastUnixTime);
}
#endregion Check for timestamp errors
#region Write Data
if (bw != null)
{
#region Write Timestamp
diffMS = (int)(aUnixTime - lastUnixTime);
if (isForceTimestampSave || (diffMS > 254) || (timeSaveCount == TIMESTAMP_AFTER_SAMPLES))
{
bw.WriteByte((byte)255);
WocketsTimer.GetUnixTimeBytes(aUnixTime, retBytes);
bw.WriteBytes(retBytes, 6);
timeSaveCount = 0;
isForceTimestampSave = false;
}
else
{
bw.WriteByte((byte)diffMS);
timeSaveCount++;
}
#endregion Write Timestamp
#region Write Raw Data
for (int j = 0; j < data._Length; j++)
{
bw.WriteByte(data.RawBytes[j]);
}
#endregion Write Raw Data
}
#endregion Write Data
#region Update Pointers, statistics and time stamps
lastUnixTime = aUnixTime;
this.tailUnixTimestamp = aUnixTime;
if (tail >= this._Decoder._BufferSize - 1)
{
tail = 0;
}
else
{
tail++;
}
this._SavedPackets++;
#endregion Update Pointers, statistics and time stamps
}
if ((bw != null) && (this._Flush))
{
bw.Flush();
}
}
#endif
}