public static void MergeStreamsThreadInit(MergeStreamsManager manager)
{
int imageCtr = 0;
bool isMessageDequeueSuccess;
int nQueues = manager.input.nInputQueues;
bool[] isInputDequeueSuccess = new bool[nQueues];
StreamLoopState state = StreamLoopState.Waiting;
Tuple <Mat, FrameMetaData>[][] input;
while (true)
{
UpdateLoopState();
if (state == StreamLoopState.Waiting)
{
Thread.Sleep(100); continue;
}
else if (state == StreamLoopState.Exit)
{
return;
}
input = new Tuple <Mat, FrameMetaData> [nQueues][];
for (int i = 0; i < nQueues; i++)
{
while (true)
{
isInputDequeueSuccess[i] = manager.input.streamQueues[i].TryDequeue(out input[i]);
if (isInputDequeueSuccess[i])
{
isInputDequeueSuccess[i] = false;
break;
}
else
{
UpdateLoopState();
if (state == StreamLoopState.Streaming)
{
continue;
}
else if (state == StreamLoopState.Waiting)
{
Thread.Sleep(100);
}
else if (state == StreamLoopState.Exit)
{
return;
}
}
}
}
ProcessInput();
continue;
void ProcessInput()
{
imageCtr += 1;
if (imageCtr % manager.output.outputChannels[0].enqueueOrDequeueRate != 0)
{
input[0][0].Item1.Dispose();
input[1][0].Item1.Dispose();
return;
}
Mat outputMat = new Mat(size: manager.output.outputChannels[0].imageSize, type: Emgu.CV.CvEnum.DepthType.Cv8U, channels: 1);
CvInvoke.VConcat(src1: input[0][0].Item1, src2: input[1][0].Item1, dst: outputMat);
FrameMetaData outputMeta = input[0][0].Item2;
Tuple <Mat, FrameMetaData>[] output = Util.GetStreamOutput(mat: outputMat, metaData: outputMeta);
manager.output.displayQueue.Enqueue(item: output);
}
void UpdateLoopState()
{
isMessageDequeueSuccess = manager.messageQueue.TryDequeue(out ButtonCommands message);
if (isMessageDequeueSuccess)
{
if (message == ButtonCommands.BeginStreaming)
{
Console.WriteLine("BeginStreaming command received in MergeStreamsThread");
state = StreamLoopState.Streaming;
}
else if (message == ButtonCommands.EndStreaming)
{
Console.WriteLine("EndStreaming command received in MergeStreamsThread");
state = StreamLoopState.Waiting;
}
else if (message == ButtonCommands.Exit)
{
state = StreamLoopState.Exit;
}
}
}
}
}
public static void SingleStreamThreadInit(int idx, SingleStreamManager manager)
{
int imageCtr = 0;
bool isResizeNeeded = false;
Mat background = new Mat(size: manager.output.outputChannels[0].imageSize, type: Emgu.CV.CvEnum.DepthType.Cv8U, channels: 1);
bool resetBackground = true;
bool saveThisImage = false;
bool isMessageDequeueSuccess;
bool isInputDequeueSuccess;
StreamLoopState state = StreamLoopState.Waiting;
while (true)
{
isInputDequeueSuccess = manager.input.streamQueue.TryDequeue(out Tuple <Mat, FrameMetaData>[] input);
if (isInputDequeueSuccess)
{
ProcessInput();
}
UpdateLoopState();
if (state == StreamLoopState.Streaming)
{
continue;
}
else if (state == StreamLoopState.Waiting)
{
Thread.Sleep(100);
}
else if (state == StreamLoopState.Exit)
{
return;
}
void ProcessInput()
{
imageCtr += 1;
if (imageCtr % manager.input.inputChannels[0].enqueueOrDequeueRate != 0)
{
input[0].Item1.Dispose();
return;
}
if (isResizeNeeded)
{
// TODO: Implement resize operation
}
if (saveThisImage)
{
Console.WriteLine("SaveThisImage message received on SingleStreamThread");
saveThisImage = false;
}
if (resetBackground)
{
Console.WriteLine("ResetBackground message received on SingleStreamThread");
input[0].Item1.CopyTo(background);
resetBackground = false;
Console.WriteLine("resetBackground = false");
}
if (imageCtr % manager.output.outputChannels[0].enqueueOrDequeueRate != 0)
{
input[0].Item1.Dispose();
return;
}
else
{
manager.output.streamQueue.Enqueue(item: input);
}
}
void UpdateLoopState()
{
isMessageDequeueSuccess = manager.messageQueue.TryDequeue(out ButtonCommands message);
if (isMessageDequeueSuccess)
{
if (message == ButtonCommands.BeginStreaming)
{
Console.WriteLine("BeginStreaming command received in SingleStreamThread");
state = StreamLoopState.Streaming;
}
else if (message == ButtonCommands.ResetBackgroundImage)
{
resetBackground = true;
}
else if (message == ButtonCommands.SaveThisImage)
{
saveThisImage = true;
}
else if (message == ButtonCommands.EndStreaming)
{
state = StreamLoopState.Waiting;
}
else if (message == ButtonCommands.Exit)
{
state = StreamLoopState.Exit;
}
}
}
}
}
