From 882202c2bcd1e286cf83874e2623c5dc5d002f82 Mon Sep 17 00:00:00 2001
From: Dhanya Maliakal <dhanya.maliakal@psi.ch>
Date: Fri, 12 Aug 2016 13:48:30 +0200
Subject: [PATCH] fixed bug show nth frame as in 2nd, 4th etc.

---
 .../include/UDPStandardImplementation.h               |  4 ++++
 slsReceiverSoftware/src/UDPStandardImplementation.cpp | 11 +++++++++++
 2 files changed, 15 insertions(+)

diff --git a/slsReceiverSoftware/include/UDPStandardImplementation.h b/slsReceiverSoftware/include/UDPStandardImplementation.h
index 26f63ddc0..a3af9ab03 100644
--- a/slsReceiverSoftware/include/UDPStandardImplementation.h
+++ b/slsReceiverSoftware/include/UDPStandardImplementation.h
@@ -601,6 +601,8 @@ private:
 	/** Dummy Packet identifier value */
 	const static uint32_t dummyPacketValue = 0xFFFFFFFF;
 
+
+
 	//***receiver to GUI parameters***
 	/** Current Frame copied for GUI */
 	char* latestData;
@@ -617,6 +619,8 @@ private:
 	/** Semaphore to synchronize Writer and GuiReader threads*/
 	sem_t writerGuiSemaphore;
 
+	/** counter for nth frame to gui */
+	int frametoGuiCounter;
 
 
 
diff --git a/slsReceiverSoftware/src/UDPStandardImplementation.cpp b/slsReceiverSoftware/src/UDPStandardImplementation.cpp
index 6ab655ac0..d64692b65 100644
--- a/slsReceiverSoftware/src/UDPStandardImplementation.cpp
+++ b/slsReceiverSoftware/src/UDPStandardImplementation.cpp
@@ -176,6 +176,7 @@ void UDPStandardImplementation::initializeMembers(){
 	guiDataReady = false;
 	guiData = NULL;
 	strcpy(guiFileName,"");
+	frametoGuiCounter = 0;
 
 	//***general and listening thread parameters***
 	threadStarted = false;
@@ -804,6 +805,7 @@ int UDPStandardImplementation::startReceiver(char *c){
 
 	//RESET
 	//reset measurement variables
+	frametoGuiCounter = 0;
 	measurementStarted = false;
 	startFrameIndex = 0;
 	frameIndex = 0;
@@ -2897,6 +2899,9 @@ void UDPStandardImplementation::copyFrameToGui(char* buffer[]){
 		pthread_mutex_unlock(&dataReadyMutex);
 	}
 
+	//if nthe frame, wait for your turn (1st frame always shown as its zero)
+	else if(FrameToGuiFrequency && ((frametoGuiCounter)%FrameToGuiFrequency));
+
 	//random read (gui ready) or nth frame read: gui needs data now or it is the first frame
 	else{
 #ifdef DEBUG4
@@ -2936,6 +2941,12 @@ void UDPStandardImplementation::copyFrameToGui(char* buffer[]){
 		}
 
 	}
+
+	//update the counter for nth frame
+	if(FrameToGuiFrequency)
+		frametoGuiCounter++;
+
+
 }