From 268fd2b807aef342b5a4dfec9e6d27103fb7df94 Mon Sep 17 00:00:00 2001
From: Soeren Apel <soeren@apelpie.net>
Date: Thu, 18 Apr 2019 23:02:31 +0200
Subject: [PATCH] Session: Measure acquisition time

---
 pv/session.cpp | 5 +++++
 pv/session.hpp | 3 +++
 2 files changed, 8 insertions(+)

diff --git a/pv/session.cpp b/pv/session.cpp
index ae29f6a..245889d 100644
--- a/pv/session.cpp
+++ b/pv/session.cpp
@@ -820,6 +820,11 @@ void Session::set_capture_state(capture_state state)
 {
 	bool changed;
 
+	if (state == Running)
+		acq_time_.start();
+	if (state == Stopped)
+		qDebug("Acquisition took %.2f s", acq_time_.elapsed() / 1000.);
+
 	{
 		lock_guard<mutex> lock(sampling_mutex_);
 		changed = capture_state_ != state;
diff --git a/pv/session.hpp b/pv/session.hpp
index 345baea..1dd48c9 100644
--- a/pv/session.hpp
+++ b/pv/session.hpp
@@ -38,6 +38,7 @@
 #include <QObject>
 #include <QSettings>
 #include <QString>
+#include <QTime>
 
 #ifdef ENABLE_FLOW
 #include <gstreamermm.h>
@@ -305,6 +306,8 @@ private:
 	bool data_saved_;
 	bool frame_began_;
 
+	QTime acq_time_;
+
 #ifdef ENABLE_FLOW
 	RefPtr<Pipeline> pipeline_;
 	RefPtr<Element> source_;
-- 
2.30.2