c6cbe507c1
The QImage class is a thin wrapper that uses implicit sharing. We can thus embed it in the ViewFinder class instead of allocating it dynamically, and assign it at runtime. This simplifies the code. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
84 lines
1.5 KiB
C++
84 lines
1.5 KiB
C++
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* Copyright (C) 2019, Google Inc.
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*
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* viewfinder.cpp - qcam - Viewfinder
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*/
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#include "viewfinder.h"
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#include <QImage>
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#include <QImageWriter>
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#include <QMutexLocker>
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#include <QPainter>
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#include <QtDebug>
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#include "format_converter.h"
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ViewFinder::ViewFinder(QWidget *parent)
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: QWidget(parent), format_(0)
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{
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}
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ViewFinder::~ViewFinder()
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{
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}
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void ViewFinder::render(libcamera::FrameBuffer *buffer, MappedBuffer *map)
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{
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if (buffer->planes().size() != 1) {
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qWarning() << "Multi-planar buffers are not supported";
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return;
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}
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QMutexLocker locker(&mutex_);
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/*
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* \todo We're not supposed to block the pipeline handler thread
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* for long, implement a better way to save images without
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* impacting performances.
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*/
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converter_.convert(static_cast<unsigned char *>(map->memory),
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buffer->metadata().planes[0].bytesused, &image_);
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update();
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renderComplete(buffer);
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}
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QImage ViewFinder::getCurrentImage()
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{
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QMutexLocker locker(&mutex_);
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return image_.copy();
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}
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int ViewFinder::setFormat(const libcamera::PixelFormat &format,
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const QSize &size)
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{
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int ret;
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ret = converter_.configure(format, size);
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if (ret < 0)
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return ret;
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format_ = format;
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size_ = size;
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image_ = QImage(size_, QImage::Format_RGB32);
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updateGeometry();
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return 0;
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}
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void ViewFinder::paintEvent(QPaintEvent *)
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{
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QPainter painter(this);
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painter.drawImage(rect(), image_, image_.rect());
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}
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QSize ViewFinder::sizeHint() const
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{
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return size_.isValid() ? size_ : QSize(640, 480);
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}
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