Updates uvcengine and adjusts output precision

Since we now have sub-millisecond precision in the data, we control output
width based on the fractional part so we don't lose precision

EyeRecToo/src/FrameGrabber.cpp

@@ -11,19 +11,15 @@ FrameGrabber::FrameGrabber(QString id, int code, QObject* parent)
     , code(code)
     , yuvBuffer(nullptr)
     , yuvBufferSize(0)
+    , watchdog(new QTimer(this))
     , timeoutMs(2e3)
 {
 #ifdef TURBOJPEG
     tjh = tjInitDecompress();
 #endif
 
-    watchdog = new QTimer(this);
     connect(watchdog, SIGNAL(timeout()), this, SIGNAL(timedout()));
 
-    // for the first frame, we give a bit of extra leeway becase gstreamer is slow...
-    //watchdog->start(timeoutMs);
-    watchdog->start(15e3);
-
     pmIdx = gPerformanceMonitor.enrol(id, "Frame Grabber");
 }
 
@@ -160,7 +156,7 @@ void FrameGrabber::setColorCode(int code)
 
 bool FrameGrabber::jpeg2bmp(const QVideoFrame& in, cv::Mat& cvFrame)
 {
-    unsigned char* frame = const_cast<unsigned char*>(in.bits());
+    auto frame = const_cast<unsigned char*>(in.bits());
     int len = in.mappedBytes();
 
 #ifdef TURBOJPEG

EyeRecToo/src/utils.cpp

@@ -9,7 +9,7 @@ const char Token::HeaderEntry = 'H';
 const char Token::MarkerIdDelimiter = ':';
 const char Token::MarkerValueDelimiter = 'x';
 const char Token::MarkerEnd = ';';
-const int Token::Precision = 6;
+const int Token::Precision = 4;
 
 const Timestamp maxTimestamp = std::numeric_limits<Timestamp>::max();
 

EyeRecToo/src/utils.h

@@ -47,7 +47,7 @@ inline QString journalField(const T& v)
 template <>
 inline QString journalField<double>(const double& v)
 {
-    return QString("%1%2").arg(v, 0, 'g', Token::Precision).arg(Token::Delimiter);
+    return QString("%1%2").arg(v, 0, 'f', Token::Precision).arg(Token::Delimiter);
 }
 template <>
 inline QString journalField<float>(const float& v)