From 926593ab0f82b2fdfb44a2f2af1e181397d5e66e Mon Sep 17 00:00:00 2001
From: Timocop <Timocop@hotmail.de>
Date: Thu, 7 Apr 2022 08:00:34 +1200
Subject: [PATCH] limit grab frames

---
 .../PSMoveTracker/PSEye/PSEyeVideoCapture.cpp            | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/psmoveservice/PSMoveTracker/PSEye/PSEyeVideoCapture.cpp b/src/psmoveservice/PSMoveTracker/PSEye/PSEyeVideoCapture.cpp
index ea62bf78..d66a13b3 100644
--- a/src/psmoveservice/PSMoveTracker/PSEye/PSEyeVideoCapture.cpp
+++ b/src/psmoveservice/PSMoveTracker/PSEye/PSEyeVideoCapture.cpp
@@ -523,6 +523,14 @@ class PSEYECaptureCAM_VIRTUAL : public cv::IVideoCapture
 
 	bool grabFrame()
 	{
+		const std::chrono::time_point<std::chrono::high_resolution_clock> now = std::chrono::high_resolution_clock::now();
+		const std::chrono::duration<double, std::milli> timeSinceLast = now - m_lastRequest;
+		if (timeSinceLast.count() < 2.f)
+		{
+			return true;
+		}
+
+		m_lastRequest = now;
 
 		if (capturePipe == INVALID_HANDLE_VALUE)
 		{
@@ -715,6 +723,7 @@ class PSEYECaptureCAM_VIRTUAL : public cv::IVideoCapture
 	HANDLE capturePipe;
 	char pipeBuffer[VRIT_BUFF_SIZE];
 	cv::Mat capFrame;
+	std::chrono::time_point<std::chrono::high_resolution_clock> m_lastRequest;
 };
 
 static bool usingCLEyeDriver()