blob: 870ac897963abf160dca83c90980f10359bd57d7 (
plain)
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
|
// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#include "qmemoryvideobuffer_p.h"
QT_BEGIN_NAMESPACE
/*!
\class QMemoryVideoBuffer
\brief The QMemoryVideoBuffer class provides a system memory allocated video data buffer.
\internal
QMemoryVideoBuffer is the default video buffer for allocating system memory. It may be used to
allocate memory for a QVideoFrame without implementing your own QAbstractVideoBuffer.
*/
/*!
Constructs a video buffer with an image stride of \a bytesPerLine from a byte \a array.
*/
QMemoryVideoBuffer::QMemoryVideoBuffer(const QByteArray &array, int bytesPerLine)
: QAbstractVideoBuffer(QVideoFrame::NoHandle)
{
data = array;
this->bytesPerLine = bytesPerLine;
}
/*!
Destroys a system memory allocated video buffer.
*/
QMemoryVideoBuffer::~QMemoryVideoBuffer() = default;
/*!
\reimp
*/
QVideoFrame::MapMode QMemoryVideoBuffer::mapMode() const
{
return m_mapMode;
}
/*!
\reimp
*/
QAbstractVideoBuffer::MapData QMemoryVideoBuffer::map(QVideoFrame::MapMode mode)
{
MapData mapData;
if (m_mapMode == QVideoFrame::NotMapped && data.size() && mode != QVideoFrame::NotMapped) {
m_mapMode = mode;
mapData.nPlanes = 1;
mapData.bytesPerLine[0] = bytesPerLine;
mapData.data[0] = reinterpret_cast<uchar *>(data.data());
mapData.size[0] = data.size();
}
return mapData;
}
/*!
\reimp
*/
void QMemoryVideoBuffer::unmap()
{
m_mapMode = QVideoFrame::NotMapped;
}
QT_END_NAMESPACE
|
