cxVideoRecorder.cpp

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/*=========================================================================
This file is part of CustusX, an Image Guided Therapy Application.

Copyright (c) 2008-2014, SINTEF Department of Medical Technology
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   this list of conditions and the following disclaimer.

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   may be used to endorse or promote products derived from this software 
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/*
 * sscVideoRecorder.cpp
 *
 *  Created on: Dec 17, 2010
 *      Author: christiana
 */

#include "cxVideoRecorder.h"
#include "vtkImageData.h"
#include "cxTime.h"
#include "cxLogger.h"

namespace cx
{

VideoRecorder::VideoRecorder(VideoSourcePtr source, bool sync) :
        mSource(source)
{
        mSynced = !sync;
        mSyncShift = 0;
}

VideoRecorder::~VideoRecorder()
{
//      std::cout << "deleting VideoRecorder " << mData.size() << std::endl;
//
//  for (DataType::iterator iter=mData.begin(); iter!=mData.end(); ++iter)
//  {
//      if (iter->second->GetReferenceCount()>1)
//      {
//              std::cout << "WARNING found ref count " << iter->second->GetReferenceCount() << std::endl;
//      }
//  }
}

void VideoRecorder::startRecord()
{
        connect(mSource.get(), &VideoSource::newFrame, this, &VideoRecorder::newFrameSlot);
}

void VideoRecorder::stopRecord()
{
        disconnect(mSource.get(), &VideoSource::newFrame, this, &VideoRecorder::newFrameSlot);
}

void VideoRecorder::newFrameSlot()
{
        if (!mSource->validData())
                return;

        double timestamp = mSource->getTimestamp();

        if (!mSynced)
        {
                mSyncShift = getMilliSecondsSinceEpoch() - timestamp;
                report(QString("VideoRecorder found and corrected sync shift: %1 s").arg(double(mSyncShift)/1000, 6, 'f', 3));
//    std::cout << "RealTimeStreamSourceRecorder SyncShift: " << mSyncShift << std::endl;
                mSynced = true;
        }

//  double diff = 0;
//  if (!mData.empty())
//    diff = timestamp - mData.rbegin()->first;
//  std::cout << "timestamp " << timestamp << ", " << diff << std::endl;

        vtkImageDataPtr frame = vtkImageDataPtr::New();
//  std::cout << " RC after construct " << frame->GetReferenceCount() << std::endl;
        frame->DeepCopy(mSource->getVtkImageData());
//  std::cout << " RC after fill " << frame->GetReferenceCount() << std::endl;
        mData[timestamp] = frame;
//  std::cout << " RC after assign " << frame->GetReferenceCount() << std::endl;
//  if (frame->GetReferenceCount()>2)
//      frame->SetReferenceCount(2);
//  std::cout << " RC after explicit set " << frame->GetReferenceCount() << std::endl;
//  mData.clear();
//  std::cout << " RC after clear map " << frame->GetReferenceCount() << std::endl;
        frame = NULL;
//  std::cout << " RC after construct+clear temp " << mData.find(timestamp)->second->GetReferenceCount() << std::endl;
//  std::cout << "============================" << std::endl << std::endl;
}

VideoRecorder::DataType VideoRecorder::getRecording(double start, double stop)
{
        start -= mSyncShift;
        stop -= mSyncShift;
        VideoRecorder::DataType retval = mData;

//  std::cout << std::endl;
//  RealTimeStreamSourceRecorder::DataType::iterator iter;
//  for (iter=retval.begin(); iter!=retval.end(); ++iter)
//  {
//    std::cout << "timestamp pre: " << (iter->first - start) << std::endl;
//  }

        retval.erase(retval.begin(), retval.lower_bound(start)); // erase all data earlier than start
        retval.erase(retval.upper_bound(stop), retval.end()); // erase all data earlier than start

//  std::cout << std::endl;

//  for (iter=retval.begin(); iter!=retval.end(); ++iter)
//  {
//    std::cout << "timestamp post: " << (iter->first - start) << std::endl;
//  }
//  std::cout << std::endl;
//  std::cout << "recording " << retval.size() << "/" << mData.size() << "   start/stop " << start << ", " << stop << std::endl;
//  std::cout << "length " << stop - start << std::endl;
        return retval;
}


} // ssc