private void OpenPlaybackSession()
{
if (_viewItemManager.SelectedCamera != null)
{
_selectedItem = Configuration.Instance.GetItem(_viewItemManager.SelectedCamera.FQID);
if (_selectedItem != null)
{
labelName.Text = _selectedItem.Name;
lock (_bitmapVideoSourceNextLock)
{
_bitmapVideoSourceNext = new BitmapVideoSource(_selectedItem);
_bitmapVideoSourceNext.Width = pictureBox.Width;
_bitmapVideoSourceNext.Height = pictureBox.Height;
_bitmapVideoSourceNext.SetKeepAspectRatio(true, true);
}
_nextToFetchTime = DateTime.UtcNow;
_stopPlayback = false;
}
}
}
private void BitmapFetchThread()
{
bool errorRecovery = false;
BitmapVideoSource _bitmapVideoSource = null;
while (!_stop)
{
if (_performCloseVideoSource)
{
if (_bitmapVideoSource != null)
{
_bitmapVideoSource.Close();
_bitmapVideoSource = null;
}
_performCloseVideoSource = false;
}
if (_newlySelectedItem != null)
{
_selectedItem = _newlySelectedItem;
_bitmapVideoSource = new BitmapVideoSource(_selectedItem);
_bitmapVideoSource.Width = pictureBox.Width;
_bitmapVideoSource.Height = pictureBox.Height;
_bitmapVideoSource.SetKeepAspectRatio(true, true);
try
{
_bitmapVideoSource.Init();
BitmapData bitmapData = _bitmapVideoSource.GetAtOrBefore(DateTime.Now) as BitmapData;
if (bitmapData != null)
{
ShowBitmap(bitmapData);
}
else
{
ShowError(""); // Clear any error messages
}
_newlySelectedItem = null;
errorRecovery = false;
BeginInvoke(new MethodInvoker(delegate() { groupBoxPlayback.Enabled = true; }));
} catch (Exception ex)
{
if (ex is CommunicationMIPException)
{
ShowError("Connection lost to server ...");
}
else
{
ShowError(ex.Message);
}
errorRecovery = true;
_bitmapVideoSource = null;
_newlySelectedItem = _selectedItem; // Redo the Initialization
}
}
if (errorRecovery || _bitmapVideoSource == null)
{
if (this.IsHandleCreated)
{
BeginInvoke(new MethodInvoker(delegate() { groupBoxPlayback.Enabled = false; }));
}
if (_mode != PlaybackData.PlayStop)
{
buttonStop_Click(null, null);
}
Thread.Sleep(3000);
continue;
}
if (_performReSize)
{
_bitmapVideoSource.Width = _reSizeWidth;
_bitmapVideoSource.Height = _reSizeHeight;
_bitmapVideoSource.SetWidthHeight();
if (_mode == PlaybackPlayModeData.Stop)
{
_nextToFetchTime = _currentShownTime;
_redisplay = true;
}
}
if (_nextCommand != MyPlayCommand.None && _requestInProgress == false)
{
try
{
BitmapData bitmapData = null;
switch (_nextCommand)
{
case MyPlayCommand.Start:
bitmapData = _bitmapVideoSource.GetBegin();
break;
case MyPlayCommand.End:
bitmapData = _bitmapVideoSource.GetEnd();
break;
case MyPlayCommand.PrevSequence:
bitmapData = _bitmapVideoSource.GetPreviousSequence();
break;
case MyPlayCommand.NextSequence:
bitmapData = _bitmapVideoSource.GetNextSequence();
break;
case MyPlayCommand.PrevFrame:
bitmapData = _bitmapVideoSource.GetPrevious();
break;
case MyPlayCommand.NextFrame:
bitmapData = _bitmapVideoSource.GetNext() as BitmapData;
break;
}
if (bitmapData != null)
{
ShowBitmap(bitmapData);
bitmapData.Dispose();
}
}
catch (Exception ex)
{
if (ex is CommunicationMIPException)
{
ShowError("Connection lost to server ...");
}
else
{
ShowError(ex.Message);
}
errorRecovery = true;
_bitmapVideoSource = null;
_newlySelectedItem = _selectedItem; // Redo the Initialization
_nextCommand = MyPlayCommand.None;
Thread.Sleep(3000);
continue;
}
_nextCommand = MyPlayCommand.None;
}
if (_nextToFetchTime != DateTime.MinValue && _requestInProgress == false)
{
Debug.WriteLine("NextToFetch = " + _nextToFetchTime.ToString());
DateTime time = _nextToFetchTime;
DateTime localTime = time.Kind == DateTimeKind.Local ? time : time.ToLocalTime();
DateTime utcTime = time.Kind == DateTimeKind.Local ? time.ToUniversalTime() : time;
// Next 10 lines new for MIPSDK 2014
bool willResultInSameFrame = false;
// Lets validate if we are just asking for the same frame
if (_currentTimeInformation != null)
{
if (_mode == PlaybackPlayModeData.Forward &&
_currentTimeInformation.NextTime > utcTime)
{
willResultInSameFrame = true;
}
if (_mode == PlaybackPlayModeData.Reverse &&
_currentTimeInformation.PreviousTime < utcTime)
{
willResultInSameFrame = true;
}
}
_nextToFetchTime = DateTime.MinValue;
if (willResultInSameFrame)
{
// Same frame -> Ignore request
}
else
{
try
{
BeginInvoke(
new MethodInvoker(delegate() { textBoxAsked.Text = localTime.ToString("yyyy-MM-dd HH:mm:ss.fff"); }));
BitmapData bitmapData = null;
switch (_mode)
{
case PlaybackPlayModeData.Stop:
bitmapData = _bitmapVideoSource.GetAtOrBefore(utcTime) as BitmapData;
// Next 2 lines new for MIPSDK 2014
if (bitmapData != null && bitmapData.IsPreviousAvailable == false)
{
bitmapData.PreviousDateTime = bitmapData.DateTime - TimeSpan.FromMilliseconds(10);
}
break;
case PlaybackPlayModeData.Forward:
_bitmapVideoSource.GoTo(utcTime, _mode);
bitmapData = _bitmapVideoSource.GetNext() as BitmapData;
// Next 2 lines new for MIPSDK 2014
if (bitmapData != null && bitmapData.IsPreviousAvailable == false)
{
if (utcTime - TimeSpan.FromMilliseconds(10) < bitmapData.DateTime)
{
bitmapData.PreviousDateTime = utcTime - TimeSpan.FromMilliseconds(10);
}
else
{
bitmapData.PreviousDateTime = bitmapData.DateTime;
}
}
break;
case PlaybackPlayModeData.Reverse:
_bitmapVideoSource.GoTo(utcTime, _mode);
bitmapData = _bitmapVideoSource.GetPrevious();
// Next 2 lines new for MIPSDK 2014
if (bitmapData != null && bitmapData.IsPreviousAvailable == false)
{
bitmapData.PreviousDateTime = bitmapData.DateTime - TimeSpan.FromMilliseconds(10);
}
break;
}
if (bitmapData != null)
{
ShowBitmap(bitmapData);
bitmapData.Dispose();
}
}
catch (Exception ex)
{
if (ex is CommunicationMIPException)
{
ShowError("Connection lost to server ...");
}
else
{
ShowError(ex.Message);
}
errorRecovery = true;
_bitmapVideoSource = null;
_nextCommand = MyPlayCommand.None;
_newlySelectedItem = _selectedItem; // Redo the Initialization
}
}
}
}
_fetchThread = null;
}