add qrcode scanner

src/QR-Code-scanner/QrCodeScanner.cpp

@@ -0,0 +1,108 @@
+// 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 "QrCodeScanner.h"
+#include <WalletManager.h>
+#include <QVideoProbe>
+#include <QCamera>
+
+QrCodeScanner::QrCodeScanner(QObject *parent)
+    : QObject(parent)
+    , m_processTimerId(-1)
+    , m_processInterval(750)
+    , m_enabled(true)
+{
+#ifdef WITH_SCANNER
+    m_probe = new QVideoProbe(this);
+    m_thread = new QrScanThread(this);
+    m_thread->start();
+    QObject::connect(m_thread, SIGNAL(decoded(int,QString)), this, SLOT(processCode(int,QString)));
+    QObject::connect(m_thread, SIGNAL(notifyError(const QString &, bool)), this, SIGNAL(notifyError(const QString &, bool)));
+    connect(m_probe, SIGNAL(videoFrameProbed(QVideoFrame)), this, SLOT(processFrame(QVideoFrame)));
+#endif
+}
+void QrCodeScanner::setSource(QCamera *camera)
+{
+    m_probe->setSource(camera);
+}
+void QrCodeScanner::processCode(int type, const QString &data)
+{
+    if (! m_enabled) return;
+    qDebug() << "decoded - type: " << type << " data: " << data;
+    QString address, payment_id, tx_description, recipient_name, error;
+    QVector<QString> unknown_parameters;
+    uint64_t amount(0);
+    if( ! WalletManager::instance()->parse_uri(data, address, payment_id, amount, tx_description, recipient_name, unknown_parameters, error) )
+    {
+        qDebug() << "Failed to parse_uri : " << error;
+        emit notifyError(error);
+        return;
+    }
+    if(unknown_parameters.size() > 0)
+    {
+        qDebug() << "unknown parameters " << unknown_parameters;
+        emit notifyError(error, true);
+    }
+    qDebug() << "Parsed URI : " << address << " " << payment_id << " " << amount << " " << tx_description << " " << recipient_name << " " << error;
+    QString s_amount = WalletManager::instance()->displayAmount(amount);
+    qDebug() << "Amount passed " << s_amount ;
+    emit decoded(address, payment_id, s_amount, tx_description, recipient_name);
+}
+void QrCodeScanner::processFrame(QVideoFrame frame)
+{
+    if(frame.isValid()){
+        m_curFrame = frame;
+    }
+}
+bool QrCodeScanner::enabled() const
+{
+    return m_enabled;
+}
+void QrCodeScanner::setEnabled(bool enabled)
+{
+    m_enabled = enabled;
+    if(!enabled && (m_processTimerId != -1) )
+    {
+        this->killTimer(m_processTimerId);
+        m_processTimerId = -1;
+    }
+    else if (enabled && (m_processTimerId == -1) )
+    {
+        m_processTimerId = this->startTimer(m_processInterval);
+    }
+    emit enabledChanged();
+}
+#ifdef WITH_SCANNER
+void QrCodeScanner::timerEvent(QTimerEvent *event)
+{
+    if( (event->timerId() == m_processTimerId) ){
+        m_thread->addFrame(m_curFrame);
+    }
+}
+#endif
+

src/QR-Code-scanner/QrCodeScanner.h

@@ -0,0 +1,79 @@
+// 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.
+
+#ifndef QRCODESCANNER_H_
+#define QRCODESCANNER_H_
+
+#include <QImage>
+#include <QVideoFrame>
+#ifdef WITH_SCANNER
+#include "QrScanThread.h"
+#endif
+
+class QVideoProbe;
+class QCamera;
+
+class QrCodeScanner : public QObject
+{
+    Q_OBJECT
+
+    Q_PROPERTY(bool enabled READ enabled WRITE setEnabled NOTIFY enabledChanged)
+
+public:
+    QrCodeScanner(QObject *parent = Q_NULLPTR);
+
+    void setSource(QCamera*);
+
+    bool enabled() const;
+    void setEnabled(bool enabled);
+
+public Q_SLOTS:
+    void processCode(int type, const QString &data);
+    void processFrame(QVideoFrame);
+
+Q_SIGNALS:
+    void enabledChanged();
+
+    void decoded(const QString &address, const QString &payment_id, const QString &amount, const QString &tx_description, const QString &recipient_name);
+    void decode(int type, const QString &data);
+    void notifyError(const QString &error, bool warning = false);
+
+protected:
+#ifdef WITH_SCANNER
+    void timerEvent(QTimerEvent *);
+    QrScanThread *m_thread;
+#endif
+    int m_processTimerId;
+    int m_processInterval;
+    int m_enabled;
+    QVideoFrame m_curFrame;
+    QVideoProbe *m_probe;
+};
+
+#endif
+

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());
+    }
+}
+

src/QR-Code-scanner/QrScanThread.h

@@ -0,0 +1,69 @@
+// 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.
+
+#ifndef _QRSCANTHREAD_H_
+#define _QRSCANTHREAD_H_
+
+#include <QThread>
+#include <QMutex>
+#include <QWaitCondition>
+#include <QEvent>
+#include <QVideoFrame>
+#include <QCamera>
+#include <zbar.h>
+
+class QrScanThread : public QThread, public zbar::Image::Handler
+{
+    Q_OBJECT
+
+public:
+    QrScanThread(QObject *parent = Q_NULLPTR);
+    void addFrame(const QVideoFrame &frame);
+
+Q_SIGNALS:
+    void decoded(int type, const QString &data);
+    void notifyError(const QString &error, bool warning = false);
+
+protected:
+    virtual void run();
+    virtual void stop();
+    void processVideoFrame(const QVideoFrame &);
+    void processQImage(const QImage &);
+    void processZImage(zbar::Image &image);
+    virtual void image_callback(zbar::Image &image);
+    bool zimageFromQImage(const QImage&, zbar::Image &);
+
+private:
+    zbar::ImageScanner m_scanner;
+    QSharedPointer<zbar::Image> m_image;
+    bool m_running;
+    QMutex m_mutex;
+    QWaitCondition m_waitCondition;
+    QList<QVideoFrame> m_queue;
+};
+#endif