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139 lines
4.4 KiB
139 lines
4.4 KiB
// Copyright (c) 2014-2019, The Monero Project
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//
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without modification, are
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// permitted provided that the following conditions are met:
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//
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// 1. Redistributions of source code must retain the above copyright notice, this list of
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// conditions and the following disclaimer.
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//
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// 2. Redistributions in binary form must reproduce the above copyright notice, this list
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// of conditions and the following disclaimer in the documentation and/or other
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// materials provided with the distribution.
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//
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// 3. Neither the name of the copyright holder nor the names of its contributors may be
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// used to endorse or promote products derived from this software without specific
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// prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
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// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
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// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#include "QrScanThread.h"
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#include <QtGlobal>
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#include <QDebug>
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#if QT_VERSION >= QT_VERSION_CHECK(5, 6, 0)
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extern QImage qt_imageFromVideoFrame(const QVideoFrame &f);
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#else
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QImage qt_imageFromVideoFrame(const QVideoFrame &f){
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Q_ASSERT_X(0 != 0, "qt_imageFromVideoFrame", "Should have been managed in .pro");
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return QImage();
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}
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#endif
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QrScanThread::QrScanThread(QObject *parent)
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: QThread(parent)
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,m_running(true)
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{
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m_scanner.set_handler(*this);
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}
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void QrScanThread::image_callback(zbar::Image &image)
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{
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qDebug() << "image_callback : Found Code ! " ;
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for(zbar::Image::SymbolIterator sym = image.symbol_begin();
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sym != image.symbol_end();
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++sym)
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if(!sym->get_count()) {
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QString data = QString::fromStdString(sym->get_data());
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emit decoded(sym->get_type(), data);
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}
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}
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void QrScanThread::processZImage(zbar::Image &image)
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{
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m_scanner.recycle_image(image);
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zbar::Image tmp = image.convert(*(long*)"Y800");
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m_scanner.scan(tmp);
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image.set_symbols(tmp.get_symbols());
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}
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bool QrScanThread::zimageFromQImage(const QImage &qimg, zbar::Image &dst)
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{
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switch( qimg.format() ){
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case QImage::Format_RGB32 :
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case QImage::Format_ARGB32 :
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case QImage::Format_ARGB32_Premultiplied :
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break;
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default :
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emit notifyError(QString("Invalid QImage Format !"));
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return false;
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}
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unsigned int bpl( qimg.bytesPerLine() ), width( bpl / 4), height( qimg.height());
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dst.set_size(width, height);
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dst.set_format("BGR4");
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#if QT_VERSION >= QT_VERSION_CHECK(5, 10, 0)
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unsigned long datalen = qimg.sizeInBytes();
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#else
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unsigned long datalen = qimg.byteCount();
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#endif
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dst.set_data(qimg.bits(), datalen);
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if((width * 4 != bpl) || (width * height * 4 > datalen)){
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emit notifyError(QString("QImage to Zbar::Image failed !"));
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return false;
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}
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return true;
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}
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void QrScanThread::processQImage(const QImage &qimg)
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{
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try {
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m_image = QSharedPointer<zbar::Image>(new zbar::Image());
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if( ! zimageFromQImage(qimg, *m_image) )
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return;
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processZImage(*m_image);
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}
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catch(std::exception &e) {
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qDebug() << "ERROR: " << e.what();
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emit notifyError(e.what());
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}
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}
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void QrScanThread::processVideoFrame(const QVideoFrame &frame)
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{
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processQImage( qt_imageFromVideoFrame(frame) );
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}
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void QrScanThread::stop()
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{
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m_running = false;
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m_waitCondition.wakeOne();
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}
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void QrScanThread::addFrame(const QVideoFrame &frame)
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{
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QMutexLocker locker(&m_mutex);
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m_queue.append(frame);
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m_waitCondition.wakeOne();
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}
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void QrScanThread::run()
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{
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QVideoFrame frame;
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while(m_running) {
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QMutexLocker locker(&m_mutex);
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while(m_queue.isEmpty() && m_running)
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m_waitCondition.wait(&m_mutex);
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if(!m_queue.isEmpty())
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processVideoFrame(m_queue.takeFirst());
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}
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}
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