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#include "CameraPointGrey.h"

#include <cstring>

void PrintError(FlyCapture2::Error error){

    error.PrintErrorTrace();

}

vector<CameraInfo> CameraPointGrey::getCameraList(){

    FlyCapture2::Error error;

    FlyCapture2::BusManager busManager;

    unsigned int numCameras;

    error = busManager.GetNumOfCameras(&numCameras);

    vector<CameraInfo> ret;

    if (error != FlyCapture2::PGRERROR_OK){

        PrintError(error);

        return ret;

    }

    for (unsigned int i=0; i < numCameras; i++){

        FlyCapture2::PGRGuid guid;

        error = busManager.GetCameraFromIndex(i, &guid);

        if (error != FlyCapture2::PGRERROR_OK)

            PrintError(error);

        // Connect to camera

        FlyCapture2::Camera cam;

        error = cam.Connect(&guid);

        if (error != FlyCapture2::PGRERROR_OK)

            PrintError( error );

        // Get the camera information

        FlyCapture2::CameraInfo camInfo;

        error = cam.GetCameraInfo(&camInfo);

        if (error != FlyCapture2::PGRERROR_OK)

            PrintError( error );

        CameraInfo camera;

        camera.busID = camInfo.nodeNumber;

        camera.model = camInfo.modelName;

        camera.vendor = "Point Grey Research";

        ret.push_back(camera);

    }

    return ret;

}

CameraPointGrey::CameraPointGrey(unsigned int camNum, CameraTriggerMode triggerMode) : Camera(triggerMode){

    FlyCapture2::Error error;

    // Connect to camera

    FlyCapture2::BusManager busManager;

    FlyCapture2::PGRGuid camGuid;

    busManager.GetCameraFromIndex(camNum, &camGuid);

    error = cam.Connect(&camGuid);

    if (error != FlyCapture2::PGRERROR_OK)

        PrintError(error);

    // Configure video mode and frame rate

    FlyCapture2::VideoMode videoMode = FlyCapture2::VIDEOMODE_640x480Y16;

    FlyCapture2::FrameRate frameRate = FlyCapture2::FRAMERATE_15;

    cam.SetVideoModeAndFrameRate(videoMode, frameRate);

    // Get the camera information

    FlyCapture2::CameraInfo camInfo;

    error = cam.GetCameraInfo(&camInfo);

    if (error != FlyCapture2::PGRERROR_OK)

        PrintError(error);

    std::cout << camInfo.vendorName << "  " << camInfo.modelName << "  " << camInfo.serialNumber << std::endl;

    // Set reasonable default settings

    CameraSettings settings;

    //settings.shutter = 8.33;

    settings.shutter = 33.33;

    settings.gain = 0.0;

    this->setCameraSettings(settings);

    // Start isochronous image transfer

    error = cam.StartCapture();

    if (error != FlyCapture2::PGRERROR_OK)

        PrintError(error);

    return;

}

CameraSettings CameraPointGrey::getCameraSettings(){

    FlyCapture2::Property property;

    // Get settings:

    CameraSettings settings;

    property.type = FlyCapture2::SHUTTER;

    cam.GetProperty(&property);

    settings.shutter = property.absValue;

    property.type = FlyCapture2::GAIN;

    cam.GetProperty(&property);

    settings.gain = property.absValue;

    return settings;

}

void CameraPointGrey::setCameraSettings(CameraSettings settings){

    FlyCapture2::Property property;

    property.onOff = true;

    property.absControl = true;

    property.type = FlyCapture2::SHUTTER;

    property.absValue = settings.shutter;

    cam.SetProperty(&property);

    property.type = FlyCapture2::GAIN;

    property.absValue = settings.gain;

    cam.SetProperty(&property);

}

void CameraPointGrey::startCapture(){

    FlyCapture2::Error error;\

    CameraSettings settings = this->getCameraSettings();

    std::cout << "\tShutter: " << settings.shutter << "ms" << std::endl;

    std::cout << "\tGain: " << settings.gain << "dB" << std::endl;

    if(triggerMode == triggerModeHardware){

        // Configure for hardware trigger

        FlyCapture2::TriggerMode triggerMode;

        triggerMode.onOff = true;

        triggerMode.polarity = 0;

        triggerMode.source = 0;

        triggerMode.mode = 14;

        error = cam.SetTriggerMode(&triggerMode);

        if (error != FlyCapture2::PGRERROR_OK)

            PrintError(error);

        error = cam.StartCapture();

        if (error != FlyCapture2::PGRERROR_OK)

            PrintError(error);

    } else if(triggerMode == triggerModeSoftware){

        // Configure software trigger

        FlyCapture2::TriggerMode triggerMode;

        triggerMode.onOff = true;

        triggerMode.polarity = 0;

        triggerMode.source = 7; // software

        triggerMode.mode = 0;

        error = cam.SetTriggerMode(&triggerMode);

        if (error != FlyCapture2::PGRERROR_OK)

            PrintError(error);

    }

    // Set the trigger timeout to 1000 ms

    FlyCapture2::FC2Config config;

    config.grabTimeout = 1000;

    error = cam.SetConfiguration(&config);

    if (error != FlyCapture2::PGRERROR_OK)

        PrintError(error);

    capturing = true;

}

void CameraPointGrey::stopCapture(){

    FlyCapture2::Error error = cam.StopCapture();

    if (error != FlyCapture2::PGRERROR_OK)

        PrintError(error);

    capturing = false;

}

CameraFrame CameraPointGrey::getFrame(){

    FlyCapture2::Error error;

    if(triggerMode == triggerModeSoftware){

        // Fire software trigger

        // broadcasting not supported on some platforms

        cam.FireSoftwareTrigger(false);

    }

    // Retrieve the image

    FlyCapture2::Image rawImage;

    error = cam.RetrieveBuffer(&rawImage);

    if (error != FlyCapture2::PGRERROR_OK)

        PrintError(error);

    CameraFrame frame;

    frame.timeStamp = rawImage.GetTimeStamp().cycleCount;

    frame.height = rawImage.GetRows();

    frame.width = rawImage.GetCols();

    frame.bitDepth = 16;

    frame.memory = (unsigned short*)rawImage.GetData();

    return frame;

}

size_t CameraPointGrey::getFrameSizeBytes(){

    return 0;

}

size_t CameraPointGrey::getFrameWidth(){

    // How do we poll this from the camera?

    return 640;

}

size_t CameraPointGrey::getFrameHeight(){

    // How do we poll this from the camera?

    return 480;

}

CameraPointGrey::~CameraPointGrey(){

    if(capturing && triggerMode == triggerModeHardware){

        // Stop camera transmission

        cam.StopCapture();

    }

    // Gracefulle destruct the camera

    cam.Disconnect();

}