videoFormats.cpp
4.44 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Copyright 2012 The MITRE Corporation *
* *
* Licensed under the Apache License, Version 2.0 (the "License"); *
* you may not use this file except in compliance with the License. *
* You may obtain a copy of the License at *
* *
* http://www.apache.org/licenses/LICENSE-2.0 *
* *
* Unless required by applicable law or agreed to in writing, software *
* distributed under the License is distributed on an "AS IS" BASIS, *
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. *
* See the License for the specific language governing permissions and *
* limitations under the License. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
#include <opencv2/highgui/highgui.hpp>
#include <openbr/plugins/openbr_internal.h>
#include <openbr/core/qtutils.h>
#include <openbr/core/opencvutils.h>
using namespace cv;
namespace br
{
/*!
* \ingroup formats
* \brief Read all frames of a video using OpenCV
* \author Charles Otto \cite caotto
*/
class videoFormat : public Format
{
Q_OBJECT
public:
Template read() const
{
if (!file.exists() )
return Template();
VideoCapture videoSource(file.name.toStdString());
videoSource.open(file.name.toStdString() );
Template frames;
if (!videoSource.isOpened()) {
qWarning("video file open failed");
return frames;
}
bool open = true;
while (open) {
cv::Mat frame;
open = videoSource.read(frame);
if (!open) break;
frames.append(cv::Mat());
frames.back() = frame.clone();
}
return frames;
}
void write(const Template &t) const
{
int fourcc = OpenCVUtils::getFourcc();
VideoWriter videoSink(file.name.toStdString(), fourcc, 30, t.begin()->size());
// Did we successfully open the output file?
if (!videoSink.isOpened() ) qFatal("Failed to open output file");
for (Template::const_iterator it = t.begin(); it!= t.end(); ++it) {
videoSink << *it;
}
}
};
BR_REGISTER(Format, videoFormat)
/*!
* \ingroup formats
* \brief Retrieves an image from a webcam.
* \author Josh Klontz \cite jklontz
*/
class webcamFormat : public Format
{
Q_OBJECT
Template read() const
{
static QScopedPointer<VideoCapture> videoCapture;
if (videoCapture.isNull())
videoCapture.reset(new VideoCapture(0));
Mat m;
videoCapture->read(m);
return Template(m);
}
void write(const Template &t) const
{
(void) t;
qFatal("Not supported.");
}
};
BR_REGISTER(Format, webcamFormat)
/*!
* \ingroup formats
* \brief Reads image files.
* \author Josh Klontz \cite jklontz
*/
class DefaultFormat : public Format
{
Q_OBJECT
Template read() const
{
Template t;
if (file.name.startsWith("http://") || file.name.startsWith("https://") || file.name.startsWith("www.")) {
if (Factory<Format>::names().contains("url")) {
File urlFile = file;
urlFile.name.append(".url");
QScopedPointer<Format> url(Factory<Format>::make(urlFile));
t = url->read();
}
} else {
Mat m = imread(file.resolved().toStdString());
if (m.data) {
t.append(m);
} else {
videoFormat videoReader;
videoReader.file = file;
t = videoReader.read();
}
}
return t;
}
void write(const Template &t) const
{
if (t.size() > 1) {
videoFormat videoWriter;
videoWriter.file = file;
videoWriter.write(t);
} else if (t.size() == 1) {
QtUtils::touchDir(QDir(file.path()));
imwrite(file.name.toStdString(), t);
}
}
};
BR_REGISTER(Format, DefaultFormat)
} // namespace br
#include "format/videoFormats.moc"