From 93d2eb5e1a064eb0eb1ad376cca71f2a3519e5ec Mon Sep 17 00:00:00 2001
From: MoroccanMalinois <MoroccanMalinois@protonmail.com>
Date: Tue, 31 Jan 2017 04:36:08 +0000
Subject: add qrcode scanner

---
 src/QR-Code-scanner/QrScanThread.cpp | 132 +++++++++++++++++++++++++++++++++++
 1 file changed, 132 insertions(+)
 create mode 100644 src/QR-Code-scanner/QrScanThread.cpp

(limited to 'src/QR-Code-scanner/QrScanThread.cpp')

diff --git a/src/QR-Code-scanner/QrScanThread.cpp b/src/QR-Code-scanner/QrScanThread.cpp
new file mode 100644
index 00000000..b6e9b9ff
--- /dev/null
+++ b/src/QR-Code-scanner/QrScanThread.cpp
@@ -0,0 +1,132 @@
+// Copyright (c) 2014-2017, The Monero Project
+//
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without modification, are
+// permitted provided that the following conditions are met:
+//
+// 1. Redistributions of source code must retain the above copyright notice, this list of
+//    conditions and the following disclaimer.
+//
+// 2. Redistributions in binary form must reproduce the above copyright notice, this list
+//    of conditions and the following disclaimer in the documentation and/or other
+//    materials provided with the distribution.
+//
+// 3. Neither the name of the copyright holder nor the names of its contributors may be
+//    used to endorse or promote products derived from this software without specific
+//    prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
+// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
+// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#include "QrScanThread.h"
+#include <QtGlobal>
+#include <QDebug>
+
+#if QT_VERSION >= QT_VERSION_CHECK(5, 6, 0)
+extern QImage qt_imageFromVideoFrame(const QVideoFrame &f);
+#else
+QImage qt_imageFromVideoFrame(const QVideoFrame &f){
+    Q_ASSERT_X(0 != 0, "qt_imageFromVideoFrame", "Should have been managed in .pro");
+    return QImage();
+}
+#endif
+
+QrScanThread::QrScanThread(QObject *parent)
+      : QThread(parent)
+       ,m_running(true)
+{
+    m_scanner.set_handler(*this);
+}
+
+void QrScanThread::image_callback(zbar::Image &image)
+{
+    qDebug() << "image_callback :  Found Code ! " ;
+    for(zbar::Image::SymbolIterator sym = image.symbol_begin();
+        sym != image.symbol_end();
+        ++sym)
+        if(!sym->get_count()) {
+            QString data = QString::fromStdString(sym->get_data());
+            emit decoded(sym->get_type(), data);
+        }
+}
+
+void QrScanThread::processZImage(zbar::Image &image)
+{
+    m_scanner.recycle_image(image);
+    zbar::Image tmp = image.convert(*(long*)"Y800");
+    m_scanner.scan(tmp);
+    image.set_symbols(tmp.get_symbols());
+}
+
+bool QrScanThread::zimageFromQImage(const QImage &qimg, zbar::Image &dst)
+{
+    switch( qimg.format() ){
+        case QImage::Format_RGB32 :
+        case QImage::Format_ARGB32 :
+        case QImage::Format_ARGB32_Premultiplied : 
+            break;
+        default :
+            emit notifyError(QString("Invalid QImage Format !"));
+            return false;
+    }
+    unsigned int bpl( qimg.bytesPerLine() ), width( bpl / 4), height( qimg.height());
+    dst.set_size(width, height);
+    dst.set_format("BGR4");
+    unsigned long datalen = qimg.byteCount();
+    dst.set_data(qimg.bits(), datalen);
+    if((width * 4 != bpl) || (width * height * 4 > datalen)){
+        emit notifyError(QString("QImage to Zbar::Image failed !"));
+        return false;
+    }
+    return true;
+}
+void QrScanThread::processQImage(const QImage &qimg)
+{
+    try {
+        m_image = QSharedPointer<zbar::Image>(new zbar::Image());
+        if( ! zimageFromQImage(qimg, *m_image) )
+            return;
+        processZImage(*m_image);
+    }
+    catch(std::exception &e) {
+        qDebug() << "ERROR: " << e.what();
+        emit notifyError(e.what());
+    }
+}
+
+void QrScanThread::processVideoFrame(const QVideoFrame &frame)
+{
+    processQImage( qt_imageFromVideoFrame(frame) );
+}
+
+void QrScanThread::stop()
+{
+    m_running = false;
+}
+
+void QrScanThread::addFrame(const QVideoFrame &frame)
+{
+    QMutexLocker locker(&m_mutex);
+    m_queue.append(frame);
+    m_waitCondition.wakeOne();
+}
+
+void QrScanThread::run()
+{
+    QVideoFrame frame;
+    while(m_running) {
+        QMutexLocker locker(&m_mutex);
+        while(m_queue.isEmpty())
+            m_waitCondition.wait(&m_mutex);
+        processVideoFrame(m_queue.takeFirst());
+    }
+}
+
-- 
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