Fraxinus  17.12-rc4
An IGT application
cxLayoutVideoSource.cpp
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1 /*=========================================================================
2 This file is part of CustusX, an Image Guided Therapy Application.
3 
4 Copyright (c) 2008-2014, SINTEF Department of Medical Technology
5 All rights reserved.
6 
7 Redistribution and use in source and binary forms, with or without
8 modification, are permitted provided that the following conditions are met:
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10 1. Redistributions of source code must retain the above copyright notice,
11  this list of conditions and the following disclaimer.
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13 2. Redistributions in binary form must reproduce the above copyright notice,
14  this list of conditions and the following disclaimer in the documentation
15  and/or other materials provided with the distribution.
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17 3. Neither the name of the copyright holder nor the names of its contributors
18  may be used to endorse or promote products derived from this software
19  without specific prior written permission.
20 
21 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
22 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
24 DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
25 FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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29 OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
30 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 =========================================================================*/
32 #include "cxLayoutVideoSource.h"
34 #include "cxViewCollectionWidget.h"
35 #include "vtkImageData.h"
36 #include "cxLogger.h"
37 
38 namespace cx
39 {
40 
42  mWidget(widget),
43  mStreaming(false)
44 {
45  CX_ASSERT(widget);
46  connect(mWidget.data(), &ViewCollectionWidget::rendered, this, &LayoutVideoSource::onRendered);
47 }
48 
50 {
51  return QString("LayoutVideoSource%1").arg(reinterpret_cast<long>(this));
52 }
53 
55 {
56  return QString("LayoutVideoSource");
57 }
58 
60 {
61  return mTimestamp.toMSecsSinceEpoch();
62 }
63 
65 {
66  return TimeInfo(mTimestamp.toMSecsSinceEpoch());
67 }
68 
70 {
71  if (mStreaming)
72  return;
73 
74  mStreaming = true;
75  emit streaming(mStreaming);
76 }
77 
79 {
80  if (!mStreaming)
81  return;
82 
83  mGrabbed = vtkImageDataPtr();
84  mStreaming = false;
85  emit streaming(mStreaming);
86 }
87 
89 {
90  return mStreaming;
91 }
92 
94 {
95  return true;
96 }
97 
99 {
100  return mStreaming;
101 }
102 
103 void LayoutVideoSource::onRendered()
104 {
105  if (!mStreaming)
106  return;
107 
108  mGrabbed = vtkImageDataPtr();
109  mTimestamp = QDateTime::currentDateTime();
110  emit newFrame();
111 }
112 
114 {
115  if (!mStreaming)
116  return vtkImageDataPtr();
117 
118  if (!mGrabbed)
119  {
120  ViewCollectionImageWriter grabber(mWidget);
121  mGrabbed = grabber.grab();
122  }
123  return mGrabbed;
124 }
125 
126 } // namespace cx
virtual TimeInfo getAdvancedTimeInfo()
virtual void stop()
stop streaming
#define CX_ASSERT(statement)
Definition: cxLogger.h:137
virtual bool isConnected() const
return true when a connection to the data source is established.
void streaming(bool on)
emitted when streaming started/stopped
virtual vtkImageDataPtr getVtkImageData()
LayoutVideoSource(ViewCollectionWidget *widget)
virtual void start()
start streaming
virtual double getTimestamp()
vtkSmartPointer< class vtkImageData > vtkImageDataPtr
virtual bool isStreaming() const
return true when the source is streaming data.
virtual bool validData() const
return true is data stream is ok to display. This is a heuristic based on the data rate...
void newFrame()
emitted when a new frame has arrived (getVtkImageData() returns something new). info/status/name/vali...
Namespace for all CustusX production code.