From 490f3ddb79018d13182fc17bb92943bbe427643d Mon Sep 17 00:00:00 2001
From: Stanislaw Halik <sthalik@misaki.pl>
Date: Sun, 15 Sep 2013 15:00:56 +0200
Subject: New PT from Patrick Ruoff adapted to Linux

---
 FTNoIR_Tracker_PT/FTNoIR_PT_Controls.ui        |   4 +-
 FTNoIR_Tracker_PT/boost-compat.h               |   6 ++
 FTNoIR_Tracker_PT/camera.cpp                   | 135 ++++++++++++++++++++-----
 FTNoIR_Tracker_PT/camera.h                     |  96 +++++++++---------
 FTNoIR_Tracker_PT/frame_observer.cpp           |   4 +-
 FTNoIR_Tracker_PT/frame_observer.h             |   8 +-
 FTNoIR_Tracker_PT/ftnoir_tracker_pt.cpp        |  56 ++++++++--
 FTNoIR_Tracker_PT/ftnoir_tracker_pt.h          |  33 +++++-
 FTNoIR_Tracker_PT/ftnoir_tracker_pt_dialog.cpp |  15 ++-
 FTNoIR_Tracker_PT/ftnoir_tracker_pt_dialog.h   |   6 +-
 FTNoIR_Tracker_PT/ftnoir_tracker_pt_dll.cpp    |  10 +-
 FTNoIR_Tracker_PT/ftnoir_tracker_pt_dll.h      |  18 +++-
 FTNoIR_Tracker_PT/point_extractor.cpp          |   2 +-
 FTNoIR_Tracker_PT/point_extractor.h            |   1 +
 FTNoIR_Tracker_PT/point_tracker.cpp            |  31 +++++-
 FTNoIR_Tracker_PT/point_tracker.h              |   6 +-
 FTNoIR_Tracker_PT/timer.cpp                    |   4 +-
 FTNoIR_Tracker_PT/video_widget.cpp             |  58 ++++++++---
 FTNoIR_Tracker_PT/video_widget.h               |  47 ++++++++-
 19 files changed, 405 insertions(+), 135 deletions(-)
 create mode 100644 FTNoIR_Tracker_PT/boost-compat.h

(limited to 'FTNoIR_Tracker_PT')

diff --git a/FTNoIR_Tracker_PT/FTNoIR_PT_Controls.ui b/FTNoIR_Tracker_PT/FTNoIR_PT_Controls.ui
index 7bb7eb50..1495249a 100644
--- a/FTNoIR_Tracker_PT/FTNoIR_PT_Controls.ui
+++ b/FTNoIR_Tracker_PT/FTNoIR_PT_Controls.ui
@@ -9,8 +9,8 @@
    <rect>
     <x>0</x>
     <y>0</y>
-    <width>395</width>
-    <height>552</height>
+    <width>458</width>
+    <height>590</height>
    </rect>
   </property>
   <property name="sizePolicy">
diff --git a/FTNoIR_Tracker_PT/boost-compat.h b/FTNoIR_Tracker_PT/boost-compat.h
new file mode 100644
index 00000000..aea5e1a2
--- /dev/null
+++ b/FTNoIR_Tracker_PT/boost-compat.h
@@ -0,0 +1,6 @@
+#pragma once
+#include <memory>
+#define shared_ptr auto_ptr
+namespace boost {
+    using std::auto_ptr;
+};
diff --git a/FTNoIR_Tracker_PT/camera.cpp b/FTNoIR_Tracker_PT/camera.cpp
index 21a910c1..a372373d 100644
--- a/FTNoIR_Tracker_PT/camera.cpp
+++ b/FTNoIR_Tracker_PT/camera.cpp
@@ -10,6 +10,69 @@
 
 using namespace cv;
 
+#if defined(OPENTRACK_API) && (defined(__unix) || defined(__linux))
+#include <unistd.h>
+#endif
+
+#ifdef OPENTRACK_API
+void get_camera_device_names(std::vector<std::string>& device_names) {
+#   if defined(_WIN32)
+    // Create the System Device Enumerator.
+    HRESULT hr;
+    ICreateDevEnum *pSysDevEnum = NULL;
+    hr = CoCreateInstance(CLSID_SystemDeviceEnum, NULL, CLSCTX_INPROC_SERVER, IID_ICreateDevEnum, (void **)&pSysDevEnum);
+    if (FAILED(hr))
+    {
+        return ret;
+    }
+    // Obtain a class enumerator for the video compressor category.
+    IEnumMoniker *pEnumCat = NULL;
+    hr = pSysDevEnum->CreateClassEnumerator(CLSID_VideoInputDeviceCategory, &pEnumCat, 0);
+
+    if (hr == S_OK) {
+        // Enumerate the monikers.
+        IMoniker *pMoniker = NULL;
+        ULONG cFetched;
+        while (pEnumCat->Next(1, &pMoniker, &cFetched) == S_OK) {
+            IPropertyBag *pPropBag;
+            hr = pMoniker->BindToStorage(0, 0, IID_IPropertyBag, (void **)&pPropBag);
+            if (SUCCEEDED(hr))	{
+                // To retrieve the filter's friendly name, do the following:
+                VARIANT varName;
+                VariantInit(&varName);
+                hr = pPropBag->Read(L"FriendlyName", &varName, 0);
+                if (SUCCEEDED(hr))
+                {
+                    device_names.push_back(std::string(reinterpret_cast<char const*>(varName.bstrVal)));
+                }
+                VariantClear(&varName);
+
+                ////// To create an instance of the filter, do the following:
+                ////IBaseFilter *pFilter;
+                ////hr = pMoniker->BindToObject(NULL, NULL, IID_IBaseFilter,
+                ////	(void**)&pFilter);
+                // Now add the filter to the graph.
+                //Remember to release pFilter later.
+                pPropBag->Release();
+            }
+            pMoniker->Release();
+        }
+        pEnumCat->Release();
+    }
+    pSysDevEnum->Release();
+#   else
+    for (int i = 0; i < 16; i++) {
+        char buf[128];
+        sprintf(buf, "/dev/video%d", i);
+        if (access(buf, R_OK | W_OK) == 0) {
+            device_names.push_back(std::string(buf));
+        } else {
+            continue;
+        }
+    }
+#   endif
+}
+#else
 // ----------------------------------------------------------------------------
 void get_camera_device_names(std::vector<std::string>& device_names)
 {
@@ -22,6 +85,7 @@ void get_camera_device_names(std::vector<std::string>& device_names)
 		device_names.push_back(device_name);
 	}
 }
+#endif
 
 // ----------------------------------------------------------------------------
 void Camera::set_device_index(int index)
@@ -81,43 +145,49 @@ bool Camera::get_frame(float dt, cv::Mat* frame)
 }
 
 // ----------------------------------------------------------------------------
-/*
+#ifdef OPENTRACK_API
 void CVCamera::start()
 {
-	cap = cvCreateCameraCapture(desired_index);
+    cap = new VideoCapture(desired_index);
 	// extract camera info
-	if (cap)
+    if (cap->isOpened())
 	{
 		active = true;
 		active_index = desired_index;
-		cam_info.res_x = cvGetCaptureProperty(cap, CV_CAP_PROP_FRAME_WIDTH);
-		cam_info.res_y = cvGetCaptureProperty(cap, CV_CAP_PROP_FRAME_HEIGHT);
+        cam_info.res_x = cap->get(CV_CAP_PROP_FRAME_WIDTH);
+        cam_info.res_y = cap->get(CV_CAP_PROP_FRAME_HEIGHT);
 	}
+    else {
+        delete cap;
+        cap = NULL;
+    }
 }
 
 void CVCamera::stop()
 {
-	if (cap) cvReleaseCapture(&cap);
+    if (cap)
+    {
+        cap->release();
+        delete cap;
+    }
 	active = false;
 }
 
 bool CVCamera::_get_frame(Mat* frame)
 {
-	if (cap && cvGrabFrame(cap) != 0)
+    if (cap)
 	{
-		// retrieve frame
-		IplImage* _img = cvRetrieveFrame(cap, 0);
-		if(_img)
-		{
-			if(_img->origin == IPL_ORIGIN_TL)
-				*frame = Mat(_img);
-			else
-			{
-				Mat temp(_img);
-				flip(temp, *frame, 0);
-			}
-			return true;
-		}
+        Mat img;
+        /*
+         * XXX some Windows webcams fail to decode first
+         *     frames and then some every once in a while
+         * -sh
+         */
+        while (!cap->read(img))\
+            ;;
+
+        *frame = img;
+        return true;
 	}
 	return false;
 }
@@ -134,21 +204,30 @@ void CVCamera::_set_f()
 
 void CVCamera::_set_fps()
 {
-	if (cap) cvSetCaptureProperty(cap, CV_CAP_PROP_FPS, cam_desired.fps);
+    if (cap) cap->set(CV_CAP_PROP_FPS, cam_desired.fps);
 }
 
 void CVCamera::_set_res()
 {
 	if (cap)
 	{
-		cvSetCaptureProperty(cap, CV_CAP_PROP_FRAME_WIDTH,  cam_desired.res_x);
-		cvSetCaptureProperty(cap, CV_CAP_PROP_FRAME_HEIGHT, cam_desired.res_y);
-		cam_info.res_x = cvGetCaptureProperty(cap, CV_CAP_PROP_FRAME_WIDTH);
-		cam_info.res_y = cvGetCaptureProperty(cap, CV_CAP_PROP_FRAME_HEIGHT);
+        cap->set(CV_CAP_PROP_FRAME_WIDTH,  cam_desired.res_x);
+        cap->set(CV_CAP_PROP_FRAME_HEIGHT, cam_desired.res_y);
+        cam_info.res_x = cap->get(CV_CAP_PROP_FRAME_WIDTH);
+        cam_info.res_y = cap->get(CV_CAP_PROP_FRAME_HEIGHT);
 	}
 }
-*/
+void CVCamera::_set_device_index()
+{
+    if (cap)
+    {
+        cap->release();
+        delete cap;
+    }
+    cap = new VideoCapture(desired_index);
+}
 
+#else
 // ----------------------------------------------------------------------------
 VICamera::VICamera() : frame_buffer(NULL)
 {
@@ -234,7 +313,7 @@ void VICamera::_set_res()
 {
 	if (active) restart();
 }
-
+#endif
 
 // ----------------------------------------------------------------------------
 Mat FrameRotation::rotate_frame(Mat frame)
@@ -260,4 +339,4 @@ Mat FrameRotation::rotate_frame(Mat frame)
 	default:
 		return frame;
 	}
-}
\ No newline at end of file
+}
diff --git a/FTNoIR_Tracker_PT/camera.h b/FTNoIR_Tracker_PT/camera.h
index c0876d0a..d1a8104c 100644
--- a/FTNoIR_Tracker_PT/camera.h
+++ b/FTNoIR_Tracker_PT/camera.h
@@ -9,8 +9,13 @@
 #define CAMERA_H
 
 #include <opencv2/opencv.hpp>
-#include "videoInput/videoInput.h"
-#include <boost/shared_ptr.hpp>
+#ifndef OPENTRACK_API
+#   include <boost/shared_ptr.hpp>
+#else
+#   include "FTNoIR_Tracker_PT/boost-compat.h"
+#   include <opencv2/highgui.hpp>
+#   include <opencv2/highgui/highgui_c.h>
+#endif
 #include <string>
 
 // ----------------------------------------------------------------------------
@@ -33,50 +38,50 @@ struct CamInfo
 class Camera
 {
 public:
-	Camera() : dt_valid(0), dt_mean(0), desired_index(0), active_index(-1), active(false) {}
-	virtual ~Camera() {}
+        Camera() : dt_valid(0), dt_mean(0), desired_index(0), active_index(-1), active(false) {}
+        virtual ~Camera() {}
 
-	// start/stop capturing
-	virtual void start() = 0;
-	virtual void stop() = 0;
-	void restart() { stop(); start(); }
+        // start/stop capturing
+        virtual void start() = 0;
+        virtual void stop() = 0;
+        void restart() { stop(); start(); }
 
-	// calls corresponding template methods and reinitializes frame rate calculation
-	void set_device_index(int index);
-	void set_f(float f);
-	void set_fps(int fps);
-	void set_res(int x_res, int y_res);
+        // calls corresponding template methods and reinitializes frame rate calculation
+        void set_device_index(int index);
+        void set_f(float f);
+        void set_fps(int fps);
+        void set_res(int x_res, int y_res);
 
-	// gets a frame from the camera, dt: time since last call in seconds
-	bool get_frame(float dt, cv::Mat* frame);
+        // gets a frame from the camera, dt: time since last call in seconds
+        bool get_frame(float dt, cv::Mat* frame);
 
-	// WARNING: returned references are valid as long as object
-	const CamInfo& get_info() const    { return cam_info; }
-	const CamInfo& get_desired() const { return cam_desired; }
+        // WARNING: returned references are valid as long as object
+        const CamInfo& get_info() const    { return cam_info; }
+        const CamInfo& get_desired() const { return cam_desired; }
 
 protected:
-	// get a frame from the camera
-	virtual bool _get_frame(cv::Mat* frame) = 0;
-
-	// update the camera using cam_desired, write res and f to cam_info if successful
-	virtual void _set_device_index() = 0;
-	virtual void _set_f() = 0;
-	virtual void _set_fps() = 0;
-	virtual void _set_res() = 0;
-
-	bool active;
-	int desired_index;
-	int active_index;
-	CamInfo cam_info;
-	CamInfo cam_desired;
-	float dt_valid;
-	float dt_mean;
+        // get a frame from the camera
+        virtual bool _get_frame(cv::Mat* frame) = 0;
+
+        // update the camera using cam_desired, write res and f to cam_info if successful
+        virtual void _set_device_index() = 0;
+        virtual void _set_f() = 0;
+        virtual void _set_fps() = 0;
+        virtual void _set_res() = 0;
+
+        bool active;
+        int desired_index;
+        int active_index;
+        CamInfo cam_info;
+        CamInfo cam_desired;
+        float dt_valid;
+        float dt_mean;
 };
 
 
 // ----------------------------------------------------------------------------
 // camera based on OpenCV's videoCapture
-/*
+#ifdef OPENTRACK_API
 class CVCamera : public Camera
 {
 public:
@@ -92,11 +97,11 @@ protected:
 	virtual void _set_f();
 	virtual void _set_fps();
 	virtual void _set_res();
+    virtual void _set_device_index();
 
-	CvCapture* cap;
+    cv::VideoCapture* cap;
 };
-*/
-
+#else
 // ----------------------------------------------------------------------------
 // Camera based on the videoInput library
 class VICamera : public Camera
@@ -119,19 +124,20 @@ protected:
 	cv::Mat new_frame;
 	unsigned char* frame_buffer;
 };
+#endif
 
+enum RotationType
+{
+    CLOCKWISE = -1,
+    ZERO = 0,
+    COUNTER_CLOCKWISE = 1
+};
 
 // ----------------------------------------------------------------------------
 class FrameRotation 
 {
 public:
-	typedef enum Rotation
-	{
-		CLOCKWISE = -1,
-		ZERO = 0,
-		COUNTER_CLOCKWISE = 1
-	};
-	Rotation rotation;
+    RotationType rotation;
 
 	cv::Mat rotate_frame(cv::Mat frame);
 };
diff --git a/FTNoIR_Tracker_PT/frame_observer.cpp b/FTNoIR_Tracker_PT/frame_observer.cpp
index 7e4bb3e3..281f3d57 100644
--- a/FTNoIR_Tracker_PT/frame_observer.cpp
+++ b/FTNoIR_Tracker_PT/frame_observer.cpp
@@ -11,8 +11,8 @@
 FrameProvider::~FrameProvider()
 {
 	QMutexLocker lock(&observer_mutex);
-	for (auto iter=frame_observers.begin(); iter!=frame_observers.end(); ++iter)
+    for (std::set<FrameObserver*>::iterator iter=frame_observers.begin(); iter!=frame_observers.end(); ++iter)
 	{
 		(*iter)->on_frame_provider_destroy();
 	}
-}
\ No newline at end of file
+}
diff --git a/FTNoIR_Tracker_PT/frame_observer.h b/FTNoIR_Tracker_PT/frame_observer.h
index 4afbd72c..585a6ee7 100644
--- a/FTNoIR_Tracker_PT/frame_observer.h
+++ b/FTNoIR_Tracker_PT/frame_observer.h
@@ -10,7 +10,11 @@
 
 #include <QMutex>
 #include <opencv2/opencv.hpp>
-#include <boost/shared_ptr.hpp>
+#ifndef OPENTRACK_API
+#   include <boost/shared_ptr.hpp>
+#else
+#   include "FTNoIR_Tracker_PT/boost-compat.h"
+#endif
 #include <set>
 
 //-----------------------------------------------------------------------------
@@ -69,4 +73,4 @@ private:
 	FrameObserver(const FrameObserver&);
 };
 
-#endif //FRAME_OBSERVER_H
\ No newline at end of file
+#endif //FRAME_OBSERVER_H
diff --git a/FTNoIR_Tracker_PT/ftnoir_tracker_pt.cpp b/FTNoIR_Tracker_PT/ftnoir_tracker_pt.cpp
index 88a3fc8d..d4741101 100644
--- a/FTNoIR_Tracker_PT/ftnoir_tracker_pt.cpp
+++ b/FTNoIR_Tracker_PT/ftnoir_tracker_pt.cpp
@@ -12,6 +12,10 @@
 #include <QFile>
 #include <QCoreApplication>
 
+#ifdef OPENTRACK_API
+#   define VideoWidget VideoWidget2
+#endif
+
 using namespace std;
 using namespace cv;
 using namespace boost;
@@ -92,6 +96,9 @@ void Tracker::run()
 				const std::vector<cv::Vec2f>& points = point_extractor.extract_points(frame, dt, has_observers());
 				tracking_valid = point_tracker.track(points, camera.get_info().f, dt);
 				frame_count++;
+#ifdef OPENTRACK_API
+                video_widget->update_image(frame);
+#endif
 			}
 #ifdef PT_PERF_LOG
 			log_stream<<"dt: "<<dt;
@@ -113,12 +120,16 @@ void Tracker::apply(const TrackerSettings& settings)
 	camera.set_res(settings.cam_res_x, settings.cam_res_y);	
 	camera.set_fps(settings.cam_fps);
 	camera.set_f(settings.cam_f);
-	frame_rotation.rotation = static_cast<FrameRotation::Rotation>(settings.cam_roll);
+    frame_rotation.rotation = static_cast<RotationType>(settings.cam_roll);
 	point_extractor.threshold_val = settings.threshold;
 	point_extractor.min_size = settings.min_point_size;
-	point_extractor.max_size = settings.max_point_size;
-	point_tracker.point_model = boost::shared_ptr<PointModel>(new PointModel(settings.M01, settings.M02));
-	point_tracker.dynamic_pose_resolution = settings.dyn_pose_res;
+    point_extractor.max_size = settings.max_point_size;
+#ifdef OPENTRACK_API
+    point_tracker.point_model.reset(new PointModel(settings.M01, settings.M02));
+#else
+    point_tracker.point_model = boost::shared_ptr<PointModel>(new PointModel(settings.M01, settings.M02));
+#endif
+    point_tracker.dynamic_pose_resolution = settings.dyn_pose_res;
 	sleep_time = settings.sleep_time;
 	point_tracker.dt_reset = settings.reset_time / 1000.0;
 	show_video_widget = settings.video_widget;
@@ -181,7 +192,6 @@ void Tracker::update_show_video_widget()
 	{
 		const int VIDEO_FRAME_WIDTH  = 252;
 		const int VIDEO_FRAME_HEIGHT = 189;
-
 		video_widget = new VideoWidget(video_frame, this);
 		QHBoxLayout* video_layout = new QHBoxLayout();
 		video_layout->setContentsMargins(0, 0, 0, 0);
@@ -208,15 +218,28 @@ void Tracker::refreshVideo()
 	if (video_widget) video_widget->update_frame_and_points();
 }
 
+#ifdef OPENTRACK_API
+void Tracker::StartTracker(QFrame *parent_window)
+#else
 void Tracker::StartTracker(HWND parent_window)
+#endif
 {
+#ifdef OPENTRACK_API
+    Initialize(parent_window);
+#endif
 	reset_command(PAUSE);
 }
 
+#ifndef OPENTRACK_API
 void Tracker::StopTracker(bool exit)
 {
 	set_command(PAUSE);
 }
+#endif
+
+#ifdef OPENTRACK_API
+#define THeadPoseData double
+#endif
 
 bool Tracker::GiveHeadPoseData(THeadPoseData *data)
 {
@@ -228,14 +251,20 @@ bool Tracker::GiveHeadPoseData(THeadPoseData *data)
 		FrameTrafo X_CM = point_tracker.get_pose();
 		FrameTrafo X_MH(Matx33f::eye(), t_MH);
 		FrameTrafo X_GH = R_GC * X_CM * X_MH;
-		Matx33f R = X_GH.R * X_GH_0.R.t(); 
+        Matx33f R = X_GH.R * X_GH_0.R.t();
 		Vec3f   t = X_GH.t - X_GH_0.t;		
 
+#ifndef OPENTRACK_API
 		// get translation(s)
 		if (bEnableX) data->x = t[0] / 10.0;	// convert to cm
 		if (bEnableY) data->y = t[1] / 10.0;
 		if (bEnableZ) data->z = t[2] / 10.0;
-
+#else
+        // get translation(s)
+        if (bEnableX) data[TX] = t[0] / 10.0;	// convert to cm
+        if (bEnableY) data[TY] = t[1] / 10.0;
+        if (bEnableZ) data[TZ] = t[2] / 10.0;
+#endif
 		// translate rotation matrix from opengl (G) to roll-pitch-yaw (E) frame
 		// -z -> x, y -> z, x -> -y
 		Matx33f R_EG( 0, 0,-1,
@@ -249,17 +278,26 @@ bool Tracker::GiveHeadPoseData(THeadPoseData *data)
 		alpha = atan2( R(1,0), R(0,0));
 		gamma = atan2( R(2,1), R(2,2));		
 
+#ifndef OPENTRACK_API
 		if (bEnableYaw)   data->yaw   =   rad2deg * alpha;
 		if (bEnablePitch) data->pitch = - rad2deg * beta;	// FTNoIR expects a minus here
 		if (bEnableRoll)  data->roll  =   rad2deg * gamma;
+#else
+        if (bEnableYaw)   data[Yaw]  =   rad2deg * alpha;
+        if (bEnablePitch) data[Pitch] = - rad2deg * beta;	// FTNoIR expects a minus here
+        if (bEnableRoll)  data[Roll]  =   rad2deg * gamma;
+#endif
 	}
 	return true;
 }
 
 //-----------------------------------------------------------------------------
+#ifdef OPENTRACK_API
+extern "C" FTNOIR_TRACKER_BASE_EXPORT ITracker* CALLING_CONVENTION GetConstructor()
+#else
 #pragma comment(linker, "/export:GetTracker=_GetTracker@0")
-
 FTNOIR_TRACKER_BASE_EXPORT ITrackerPtr __stdcall GetTracker()
+#endif
 {
 	return new Tracker;
-}
\ No newline at end of file
+}
diff --git a/FTNoIR_Tracker_PT/ftnoir_tracker_pt.h b/FTNoIR_Tracker_PT/ftnoir_tracker_pt.h
index 6eef945a..867378d1 100644
--- a/FTNoIR_Tracker_PT/ftnoir_tracker_pt.h
+++ b/FTNoIR_Tracker_PT/ftnoir_tracker_pt.h
@@ -8,7 +8,12 @@
 #ifndef FTNOIR_TRACKER_PT_H
 #define FTNOIR_TRACKER_PT_H
 
-#include "..\ftnoir_tracker_base\ftnoir_tracker_base.h"
+#ifdef OPENTRACK_API
+#   include "ftnoir_tracker_base/ftnoir_tracker_base.h"
+#   include "facetracknoir/global-settings.h"
+#else
+#   include "..\ftnoir_tracker_base\ftnoir_tracker_base.h"
+#endif
 #include "ftnoir_tracker_pt_settings.h"
 #include "frame_observer.h"
 #include "camera.h"
@@ -19,9 +24,14 @@
 
 #include <QThread>
 #include <QMutex>
+#include <QMutexLocker>
 #include <QTime>
 #include <opencv2/opencv.hpp>
-#include <boost/shared_ptr.hpp>
+#ifndef OPENTRACK_API
+#   include <boost/shared_ptr.hpp>
+#else
+#   include "FTNoIR_Tracker_PT/boost-compat.h"
+#endif
 #include <vector>
 
 //-----------------------------------------------------------------------------
@@ -34,10 +44,16 @@ public:
 
 	// --- ITracker interface ---
 	virtual void Initialize(QFrame *videoframe);
+#ifdef OPENTRACK_API
+    virtual void StartTracker(QFrame* parent_window);
+    virtual void WaitForExit() {}
+    virtual bool GiveHeadPoseData(double* data);
+#else
 	virtual void StartTracker(HWND parent_window);
-	virtual void StopTracker(bool exit);
-	virtual bool GiveHeadPoseData(THeadPoseData *data);
-	virtual void refreshVideo();
+    virtual void StopTracker(bool exit);
+    virtual bool GiveHeadPoseData(THeadPoseData *data);
+#endif
+    virtual void refreshVideo();
 
 	void apply(const TrackerSettings& settings);
 	void center();
@@ -66,7 +82,12 @@ protected:
 	int sleep_time;	
 
 	// --- tracking chain ---
+#ifdef OPENTRACK_API
+#define VideoWidget VideoWidget2
+    CVCamera       camera;
+#else
 	VICamera       camera;
+#endif
 	FrameRotation  frame_rotation;
 	PointExtractor point_extractor;
 	PointTracker   point_tracker;
@@ -96,4 +117,6 @@ protected:
 	Timer time;
 };
 
+#undef VideoWidget
+
 #endif // FTNOIR_TRACKER_PT_H
diff --git a/FTNoIR_Tracker_PT/ftnoir_tracker_pt_dialog.cpp b/FTNoIR_Tracker_PT/ftnoir_tracker_pt_dialog.cpp
index c99f4d67..fe995163 100644
--- a/FTNoIR_Tracker_PT/ftnoir_tracker_pt_dialog.cpp
+++ b/FTNoIR_Tracker_PT/ftnoir_tracker_pt_dialog.cpp
@@ -10,7 +10,11 @@
 #include <QMessageBox>
 #include <QDebug>
 #include <opencv2/opencv.hpp>
-#include <boost/shared_ptr.hpp>
+#ifndef OPENTRACK_API
+#   include <boost/shared_ptr.hpp>
+#else
+#   include "FTNoIR_Tracker_PT/boost-compat.h"
+#endif
 #include <vector>
 
 using namespace std;
@@ -39,7 +43,7 @@ TrackerDialog::TrackerDialog()
 
 	vector<string> device_names;
 	get_camera_device_names(device_names);
-	for (auto iter = device_names.begin(); iter != device_names.end(); ++iter)
+    for (vector<string>::iterator iter = device_names.begin(); iter != device_names.end(); ++iter)
 	{
 		ui.camdevice_combo->addItem(iter->c_str());
 	}
@@ -398,9 +402,12 @@ void TrackerDialog::unRegisterTracker()
 }
 
 //-----------------------------------------------------------------------------
+#ifdef OPENTRACK_API
+extern "C" FTNOIR_TRACKER_BASE_EXPORT ITrackerDialog* CALLING_CONVENTION GetDialog( )
+#else
 #pragma comment(linker, "/export:GetTrackerDialog=_GetTrackerDialog@0")
-
 FTNOIR_TRACKER_BASE_EXPORT ITrackerDialogPtr __stdcall GetTrackerDialog( )
+#endif
 {
 	return new TrackerDialog;
-}
\ No newline at end of file
+}
diff --git a/FTNoIR_Tracker_PT/ftnoir_tracker_pt_dialog.h b/FTNoIR_Tracker_PT/ftnoir_tracker_pt_dialog.h
index bf0a90f2..14df7ede 100644
--- a/FTNoIR_Tracker_PT/ftnoir_tracker_pt_dialog.h
+++ b/FTNoIR_Tracker_PT/ftnoir_tracker_pt_dialog.h
@@ -8,7 +8,11 @@
 #ifndef FTNOIR_TRACKER_PT_DIALOG_H
 #define FTNOIR_TRACKER_PT_DIALOG_H
 
+#ifdef OPENTRACK_API
+#include "ftnoir_tracker_base/ftnoir_tracker_base.h"
+#else
 #include "..\ftnoir_tracker_base\ftnoir_tracker_base.h"
+#endif
 #include "ftnoir_tracker_pt_settings.h"
 #include "ftnoir_tracker_pt.h"
 #include "trans_calib.h"
@@ -113,4 +117,4 @@ protected:
 	Ui::UICPTClientControls ui;
 };
 
-#endif //FTNOIR_TRACKER_PT_DIALOG_H
\ No newline at end of file
+#endif //FTNOIR_TRACKER_PT_DIALOG_H
diff --git a/FTNoIR_Tracker_PT/ftnoir_tracker_pt_dll.cpp b/FTNoIR_Tracker_PT/ftnoir_tracker_pt_dll.cpp
index 3a73f679..be1705c0 100644
--- a/FTNoIR_Tracker_PT/ftnoir_tracker_pt_dll.cpp
+++ b/FTNoIR_Tracker_PT/ftnoir_tracker_pt_dll.cpp
@@ -6,7 +6,6 @@
  */
 
 #include "ftnoir_tracker_pt_dll.h"
-
 #include <QIcon>
 
 //-----------------------------------------------------------------------------
@@ -31,10 +30,13 @@ void TrackerDll::getIcon(QIcon *icon)
 }
 
 
-//-----------------------------------------------------------------------------
-#pragma comment(linker, "/export:GetTrackerDll=_GetTrackerDll@0")
-
+#ifdef OPENTRACK_API
+#   include "facetracknoir/global-settings.h"
+extern "C" FTNOIR_TRACKER_BASE_EXPORT Metadata* CALLING_CONVENTION GetMetadata()
+#else
+#   pragma comment(linker, "/export:GetTrackerDll=_GetTrackerDll@0")
 FTNOIR_TRACKER_BASE_EXPORT ITrackerDllPtr __stdcall GetTrackerDll()
+#endif
 {
 	return new TrackerDll;
 }
diff --git a/FTNoIR_Tracker_PT/ftnoir_tracker_pt_dll.h b/FTNoIR_Tracker_PT/ftnoir_tracker_pt_dll.h
index 15ad63aa..18283837 100644
--- a/FTNoIR_Tracker_PT/ftnoir_tracker_pt_dll.h
+++ b/FTNoIR_Tracker_PT/ftnoir_tracker_pt_dll.h
@@ -5,15 +5,27 @@
  * copyright notice and this permission notice appear in all copies.
  */
 
-#include "..\ftnoir_tracker_base\ftnoir_tracker_base.h"
+#if defined(OPENTRACK_API)
+#   include "ftnoir_tracker_base/ftnoir_tracker_base.h"
+#   include "facetracknoir/global-settings.h"
+#else
+#   include "../ftnoir_tracker_base/ftnoir_tracker_base.h"
+#endif
 
 //-----------------------------------------------------------------------------
-class TrackerDll : public ITrackerDll
+class TrackerDll :
+#if defined(OPENTRACK_API)
+        public Metadata
+#else
+        public ITrackerDll
+#endif
 {
 	// ITrackerDll interface
+#ifndef OPENTRACK_API
 	void Initialize() {}
+#endif
 	void getFullName(QString *strToBeFilled);
 	void getShortName(QString *strToBeFilled);
 	void getDescription(QString *strToBeFilled);
 	void getIcon(QIcon *icon);
-};
\ No newline at end of file
+};
diff --git a/FTNoIR_Tracker_PT/point_extractor.cpp b/FTNoIR_Tracker_PT/point_extractor.cpp
index 76a152a7..261de60f 100644
--- a/FTNoIR_Tracker_PT/point_extractor.cpp
+++ b/FTNoIR_Tracker_PT/point_extractor.cpp
@@ -22,7 +22,7 @@ const vector<Vec2f>& PointExtractor::extract_points(Mat frame, float dt, bool dr
 
 	// convert to grayscale
 	Mat frame_gray;
-	cvtColor(frame, frame_gray, CV_RGB2GRAY);
+    cvtColor(frame, frame_gray, CV_RGB2GRAY);
 
 	// convert to binary
 	Mat frame_bin;
diff --git a/FTNoIR_Tracker_PT/point_extractor.h b/FTNoIR_Tracker_PT/point_extractor.h
index b142d2bb..c62d34f9 100644
--- a/FTNoIR_Tracker_PT/point_extractor.h
+++ b/FTNoIR_Tracker_PT/point_extractor.h
@@ -9,6 +9,7 @@
 #define POINTEXTRACTOR_H
 
 #include <opencv2/opencv.hpp>
+#include <opencv2/imgproc/imgproc_c.h>
 
 // ----------------------------------------------------------------------------
 // Extracts points from an opencv image
diff --git a/FTNoIR_Tracker_PT/point_tracker.cpp b/FTNoIR_Tracker_PT/point_tracker.cpp
index acde9154..8b508897 100644
--- a/FTNoIR_Tracker_PT/point_tracker.cpp
+++ b/FTNoIR_Tracker_PT/point_tracker.cpp
@@ -69,6 +69,13 @@ PointModel::PointModel(Vec3f M01, Vec3f M02)
 	get_d_order(points, d_order);
 }
 
+#ifdef OPENTRACK_API
+static bool d_vals_sort(const pair<float,int> a, const pair<float,int> b)
+{
+    return a.first < b.first;
+}
+#endif
+
 void PointModel::get_d_order(const std::vector<cv::Vec2f>& points, int d_order[]) const
 {
 	// get sort indices with respect to d scalar product
@@ -77,10 +84,17 @@ void PointModel::get_d_order(const std::vector<cv::Vec2f>& points, int d_order[]
 		d_vals.push_back(pair<float, int>(d.dot(points[i]), i));
 
 	struct
-	{
-		bool operator()(const pair<float, int>& a, const pair<float, int>& b) { return a.first < b.first; }
-	} comp;
-	sort(d_vals.begin(), d_vals.end(), comp);
+    {
+        bool operator()(const pair<float, int>& a, const pair<float, int>& b) { return a.first < b.first; }
+    } comp;
+    std::sort(d_vals.begin(),
+              d_vals.end(),
+#ifdef OPENTRACK_API
+              d_vals_sort
+#else
+              comp
+#endif
+              );
 
 	for (int i = 0; i<points.size(); ++i)
 		d_order[i] = d_vals[i].second;
@@ -126,8 +140,15 @@ bool PointTracker::track(const vector<Vec2f>& points, float f, float dt)
 		reset();
 	}
 
+    bool no_model =
+#ifdef OPENTRACK_API
+        point_model.get() == NULL;
+#else
+        !point_model;
+#endif
+
 	// if there is a pointtracking problem, reset the velocities
-	if (!point_model || points.size() != PointModel::N_POINTS) 
+    if (no_model || points.size() != PointModel::N_POINTS)
 	{
 		//qDebug()<<"Wrong number of points!";
 		reset_velocities();
diff --git a/FTNoIR_Tracker_PT/point_tracker.h b/FTNoIR_Tracker_PT/point_tracker.h
index f52e9dd7..11034100 100644
--- a/FTNoIR_Tracker_PT/point_tracker.h
+++ b/FTNoIR_Tracker_PT/point_tracker.h
@@ -9,7 +9,11 @@
 #define POINTTRACKER_H
 
 #include <opencv2/opencv.hpp>
-#include <boost/shared_ptr.hpp>
+#ifndef OPENTRACK_API
+#   include <boost/shared_ptr.hpp>
+#else
+#   include "FTNoIR_Tracker_PT/boost-compat.h"
+#endif
 #include <list>
 
 // ----------------------------------------------------------------------------
diff --git a/FTNoIR_Tracker_PT/timer.cpp b/FTNoIR_Tracker_PT/timer.cpp
index 363b5b09..ed7606e5 100644
--- a/FTNoIR_Tracker_PT/timer.cpp
+++ b/FTNoIR_Tracker_PT/timer.cpp
@@ -55,7 +55,7 @@ double Timer::elapsed()
     startTime = startCount.QuadPart * (1e3 / frequency.QuadPart);
     endTime = endCount.QuadPart * (1e3 / frequency.QuadPart);
 #else
-    if(!stopped)
+    if(running)
         gettimeofday(&endCount, NULL);
 
     startTime = (startCount.tv_sec * 1e3) + startCount.tv_usec;
@@ -63,4 +63,4 @@ double Timer::elapsed()
 #endif
 
     return endTime - startTime;
-}
\ No newline at end of file
+}
diff --git a/FTNoIR_Tracker_PT/video_widget.cpp b/FTNoIR_Tracker_PT/video_widget.cpp
index 236faaf7..0d31620f 100644
--- a/FTNoIR_Tracker_PT/video_widget.cpp
+++ b/FTNoIR_Tracker_PT/video_widget.cpp
@@ -14,8 +14,10 @@
 
 using namespace cv;
 using namespace std;
+#ifndef OPENTRACK_API
 using namespace boost;
-
+#endif
+#ifndef OPENTRACK_API
 // ----------------------------------------------------------------------------
 void VideoWidget::initializeGL()
 {
@@ -100,20 +102,44 @@ void VideoWidget::update_frame_and_points()
 	updateGL();
 }
 
+#else
+void VideoWidget2::update_image(const cv::Mat& frame)
+{
+    QMutexLocker foo(&mtx);
+    QImage qframe = QImage(frame.cols, frame.rows, QImage::Format_RGB888);
+    uchar* data = qframe.bits();
+    const int pitch = qframe.bytesPerLine();
+    for (int y = 0; y < frame.rows; y++)
+        for (int x = 0; x < frame.cols; x++)
+        {
+            const int pos = 3 * (y*frame.cols + x);
+            data[y * pitch + x * 3 + 0] = frame.data[pos + 2];
+            data[y * pitch + x * 3 + 1] = frame.data[pos + 1];
+            data[y * pitch + x * 3 + 2] = frame.data[pos + 0];
+        }
+    qframe = qframe.scaled(size(), Qt::IgnoreAspectRatio, Qt::FastTransformation);
+    pixmap = QPixmap::fromImage(qframe);
+}
+#endif
+
 // ----------------------------------------------------------------------------
-VideoWidgetDialog::VideoWidgetDialog(QWidget *parent, FrameProvider* provider) 
-	: QDialog(parent),
-	  video_widget(NULL)
+VideoWidgetDialog::VideoWidgetDialog(QWidget *parent, FrameProvider* provider)
+    : QDialog(parent),
+      video_widget(NULL)
 {
-	const int VIDEO_FRAME_WIDTH  = 640;
-	const int VIDEO_FRAME_HEIGHT = 480;
-
-	video_widget = new VideoWidget(this, provider);
-
-	QHBoxLayout* layout = new QHBoxLayout();
-	layout->setContentsMargins(0, 0, 0, 0);
-	layout->addWidget(video_widget);
-	if (this->layout()) delete this->layout();
-	setLayout(layout);
-	resize(VIDEO_FRAME_WIDTH, VIDEO_FRAME_HEIGHT);
-}
\ No newline at end of file
+    const int VIDEO_FRAME_WIDTH  = 640;
+    const int VIDEO_FRAME_HEIGHT = 480;
+
+#ifdef OPENTRACK_API
+    video_widget = new VideoWidget2(this, provider);
+#else
+    video_widget = new VideoWidget(this, provider);
+#endif
+
+    QHBoxLayout* layout = new QHBoxLayout();
+    layout->setContentsMargins(0, 0, 0, 0);
+    layout->addWidget(video_widget);
+    if (this->layout()) delete this->layout();
+    setLayout(layout);
+    resize(VIDEO_FRAME_WIDTH, VIDEO_FRAME_HEIGHT);
+}
diff --git a/FTNoIR_Tracker_PT/video_widget.h b/FTNoIR_Tracker_PT/video_widget.h
index dd5fb642..3164dacc 100644
--- a/FTNoIR_Tracker_PT/video_widget.h
+++ b/FTNoIR_Tracker_PT/video_widget.h
@@ -10,12 +10,23 @@
 
 #include "frame_observer.h"
 
-#include <QGLWidget>
 #include <QTime>
 #include <QDialog>
 #include <opencv2/opencv.hpp>
-#include <boost/shared_ptr.hpp>
+#ifndef OPENTRACK_API
+#   include <QGLWidget>
+#   include <boost/shared_ptr.hpp>
+#else
+#   include "FTNoIR_Tracker_PT/boost-compat.h"
+#   if defined(_WIN32)
+#       include <dshow.h>
+#   endif
+#endif
+#include <QPainter>
+#include <QPaintEvent>
+#include <QTimer>
 
+#ifndef OPENTRACK_API
 // ----------------------------------------------------------------------------
 // OpenGL based widget to display an OpenCV image with some points on top
 class VideoWidget : public QGLWidget, public FrameObserver
@@ -23,7 +34,7 @@ class VideoWidget : public QGLWidget, public FrameObserver
 	Q_OBJECT
 
 public:
-	VideoWidget(QWidget *parent, FrameProvider* provider) : QGLWidget(parent), FrameObserver(provider) {}
+    VideoWidget(QWidget *parent, FrameProvider* provider) : QGLWidget(parent), FrameObserver(provider) {}
 
 	virtual void initializeGL();
 	virtual void resizeGL(int w, int h);
@@ -40,19 +51,45 @@ private:
 
 	boost::shared_ptr< std::vector<cv::Vec2f> > points;
 };
+#else
+/* Qt moc likes to skip over preprocessor directives -sh */
+class VideoWidget2 : public QWidget, public FrameObserver
+{
+    Q_OBJECT
+
+public:
+    VideoWidget2(QWidget *parent, FrameProvider* provider) : QWidget(parent), /* to avoid linker errors */ FrameObserver(provider) {
+        connect(&timer, SIGNAL(timeout()), this, SLOT(update()));
+        timer.start(45);
+    }
+    void update_image(const cv::Mat &frame);
+    void update_frame_and_points() {}
+protected slots:
+    void paintEvent( QPaintEvent* e ) {
+        QMutexLocker foo(&mtx);
+        QPainter painter(this);
+        painter.drawPixmap(e->rect(), pixmap, e->rect());
+    }
+private:
+    QMutex mtx;
+    QPixmap pixmap;
+    QTimer timer;
+};
+#endif
 
 // ----------------------------------------------------------------------------
 // A VideoWidget embedded in a dialog frame
 class VideoWidgetDialog : public QDialog
 {
+    Q_OBJECT
 public:
 	VideoWidgetDialog(QWidget *parent, FrameProvider* provider);
 	virtual ~VideoWidgetDialog() {}
 
-	VideoWidget* get_video_widget() { return video_widget; }
+    VideoWidget2* get_video_widget() { return video_widget; }
 
 private:
-	VideoWidget* video_widget;
+    VideoWidget2* video_widget;
 };
 
 #endif // VIDEOWIDGET_H
-- 
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