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
|
/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Copyright (C) 2019, Google Inc.
*
* viewfinder.cpp - qcam - Viewfinder
*/
#include "viewfinder.h"
#include <QImage>
#include <QImageWriter>
#include <QMutexLocker>
#include <QPainter>
#include <QtDebug>
#include "format_converter.h"
ViewFinder::ViewFinder(QWidget *parent)
: QWidget(parent), format_(0), image_(nullptr)
{
}
ViewFinder::~ViewFinder()
{
delete image_;
}
void ViewFinder::display(const libcamera::FrameBuffer *buffer,
MappedBuffer *map)
{
if (buffer->planes().size() != 1) {
qWarning() << "Multi-planar buffers are not supported";
return;
}
QMutexLocker locker(&mutex_);
/*
* \todo We're not supposed to block the pipeline handler thread
* for long, implement a better way to save images without
* impacting performances.
*/
converter_.convert(static_cast<unsigned char *>(map->memory),
buffer->metadata().planes[0].bytesused, image_);
update();
}
QImage ViewFinder::getCurrentImage()
{
QMutexLocker locker(&mutex_);
return image_->copy();
}
int ViewFinder::setFormat(const libcamera::PixelFormat &format,
const QSize &size)
{
int ret;
ret = converter_.configure(format, size);
if (ret < 0)
return ret;
format_ = format;
size_ = size;
delete image_;
image_ = new QImage(size_, QImage::Format_RGB32);
updateGeometry();
return 0;
}
void ViewFinder::paintEvent(QPaintEvent *)
{
QPainter painter(this);
painter.drawImage(rect(), *image_, image_->rect());
}
QSize ViewFinder::sizeHint() const
{
return size_.isValid() ? size_ : QSize(640, 480);
}
|
