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cxVideoRecorder.cpp
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2 This file is part of CustusX, an Image Guided Therapy Application.
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32 
33 
34 /*
35  * sscVideoRecorder.cpp
36  *
37  * Created on: Dec 17, 2010
38  * Author: christiana
39  */
40 
41 #include "cxVideoRecorder.h"
42 #include "vtkImageData.h"
43 #include "cxTime.h"
44 #include "cxLogger.h"
45 
46 namespace cx
47 {
48 
50  mSource(source)
51 {
52  mSynced = !sync;
53  mSyncShift = 0;
54 }
55 
57 {
58 // std::cout << "deleting VideoRecorder " << mData.size() << std::endl;
59 //
60 // for (DataType::iterator iter=mData.begin(); iter!=mData.end(); ++iter)
61 // {
62 // if (iter->second->GetReferenceCount()>1)
63 // {
64 // std::cout << "WARNING found ref count " << iter->second->GetReferenceCount() << std::endl;
65 // }
66 // }
67 }
68 
70 {
71  connect(mSource.get(), &VideoSource::newFrame, this, &VideoRecorder::newFrameSlot);
72 }
73 
75 {
76  disconnect(mSource.get(), &VideoSource::newFrame, this, &VideoRecorder::newFrameSlot);
77 }
78 
79 void VideoRecorder::newFrameSlot()
80 {
81  if (!mSource->validData())
82  return;
83 
84  double timestamp = mSource->getTimestamp();
85 
86  if (!mSynced)
87  {
88  mSyncShift = getMilliSecondsSinceEpoch() - timestamp;
89  report(QString("VideoRecorder found and corrected sync shift: %1 s").arg(double(mSyncShift)/1000, 6, 'f', 3));
90 // std::cout << "RealTimeStreamSourceRecorder SyncShift: " << mSyncShift << std::endl;
91  mSynced = true;
92  }
93 
94 // double diff = 0;
95 // if (!mData.empty())
96 // diff = timestamp - mData.rbegin()->first;
97 // std::cout << "timestamp " << timestamp << ", " << diff << std::endl;
98 
99  vtkImageDataPtr frame = vtkImageDataPtr::New();
100 // std::cout << " RC after construct " << frame->GetReferenceCount() << std::endl;
101  frame->DeepCopy(mSource->getVtkImageData());
102 // std::cout << " RC after fill " << frame->GetReferenceCount() << std::endl;
103  mData[timestamp] = frame;
104 // std::cout << " RC after assign " << frame->GetReferenceCount() << std::endl;
105 // if (frame->GetReferenceCount()>2)
106 // frame->SetReferenceCount(2);
107 // std::cout << " RC after explicit set " << frame->GetReferenceCount() << std::endl;
108 // mData.clear();
109 // std::cout << " RC after clear map " << frame->GetReferenceCount() << std::endl;
110  frame = NULL;
111 // std::cout << " RC after construct+clear temp " << mData.find(timestamp)->second->GetReferenceCount() << std::endl;
112 // std::cout << "============================" << std::endl << std::endl;
113 }
114 
116 {
117  start -= mSyncShift;
118  stop -= mSyncShift;
119  VideoRecorder::DataType retval = mData;
120 
121 // std::cout << std::endl;
122 // RealTimeStreamSourceRecorder::DataType::iterator iter;
123 // for (iter=retval.begin(); iter!=retval.end(); ++iter)
124 // {
125 // std::cout << "timestamp pre: " << (iter->first - start) << std::endl;
126 // }
127 
128  retval.erase(retval.begin(), retval.lower_bound(start)); // erase all data earlier than start
129  retval.erase(retval.upper_bound(stop), retval.end()); // erase all data earlier than start
130 
131 // std::cout << std::endl;
132 
133 // for (iter=retval.begin(); iter!=retval.end(); ++iter)
134 // {
135 // std::cout << "timestamp post: " << (iter->first - start) << std::endl;
136 // }
137 // std::cout << std::endl;
138 // std::cout << "recording " << retval.size() << "/" << mData.size() << " start/stop " << start << ", " << stop << std::endl;
139 // std::cout << "length " << stop - start << std::endl;
140  return retval;
141 }
142 
143 
144 } // ssc
VideoRecorder(VideoSourcePtr source, bool sync=true)
double getMilliSecondsSinceEpoch()
Definition: cxTime.cpp:65
std::map< double, vtkImageDataPtr > DataType
<timestamp, frame>
virtual void startRecord()
virtual DataType getRecording(double start, double stop)
virtual void stopRecord()
boost::shared_ptr< class VideoSource > VideoSourcePtr
void report(QString msg)
Definition: cxLogger.cpp:90
vtkSmartPointer< class vtkImageData > vtkImageDataPtr
void newFrame()
emitted when a new frame has arrived (getVtkImageData() returns something new). info/status/name/vali...