- fix shutter handling

- include manually overriding xflip and yflip
- prepare video capturing mode
- use caption to indicate current settings

9 files changed, 396 insertions, 36 deletions

diff --git a/noncore/multimedia/camera/camera.pro b/noncore/multimedia/camera/camera.pro
index ffd5f37..8aedcea 100644
--- a/noncore/multimedia/camera/camera.pro
+++ b/noncore/multimedia/camera/camera.pro
@@ -5,9 +5,11 @@ TEMPLATE        = app
 CONFIG          = qt warn_on debug
 
-HEADERS         = zcameraio.h \
+HEADERS         = imageio.h \
+                  zcameraio.h \
                   previewwidget.h \
                   mainwindow.h
 
-SOURCES         = zcameraio.cpp \
+SOURCES         = imageio.cpp \
+                  zcameraio.cpp \
                   previewwidget.cpp \
                   mainwindow.cpp \
diff --git a/noncore/multimedia/camera/imageio.cpp b/noncore/multimedia/camera/imageio.cpp
new file mode 100644
index 0000000..f8f5dd0
--- a/dev/null
+++ b/noncore/multimedia/camera/imageio.cpp
@@ -0,0 +1,55 @@
+/**********************************************************************
+** Copyright (C) 2002 Michael 'Mickey' Lauer.  All rights reserved.
+**
+** This file is part of Opie Environment.
+**
+** This file may be distributed and/or modified under the terms of the
+** GNU General Public License version 2 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.
+**
+** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
+** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+**
+**********************************************************************/
+
+#include "imageio.h"
+
+#include <opie2/odebug.h>
+#include <qimage.h>
+
+
+void bufferToImage( int _width, int _height, unsigned char* bp, QImage* image )
+{
+    unsigned char* p;
+
+    image->create( _width, _height, 16 );
+    for ( int i = 0; i < _height; ++i )
+    {
+        p = image->scanLine( i );
+        for ( int j = 0; j < _width; j++ )
+        {
+            *p = *bp;
+            p++;
+            bp++;
+            *p = *bp;
+            p++;
+            bp++;
+        }
+    }
+}
+
+
+void imageToFile( QImage* i, const QString& name, const QString& format, int quality )
+{
+    QImage im = i->convertDepth( 32 );
+    bool result = im.save( name, format, quality );
+    if ( !result )
+    {
+        oerr << "imageio-Problem while writing." << oendl;
+    }
+    else
+    {
+        odebug << format << "-image has been successfully captured" << oendl;
+    }
+}
\ No newline at end of file
diff --git a/noncore/multimedia/camera/imageio.h b/noncore/multimedia/camera/imageio.h
new file mode 100644
index 0000000..8dba2ed
--- a/dev/null
+++ b/noncore/multimedia/camera/imageio.h
@@ -0,0 +1,26 @@
+/**********************************************************************
+** Copyright (C) 2003 Michael 'Mickey' Lauer.  All rights reserved.
+**
+** This file is part of Opie Environment.
+**
+** This file may be distributed and/or modified under the terms of the
+** GNU General Public License version 2 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.
+**
+** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
+** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+**
+**********************************************************************/
+
+#ifndef IMAGEIO_H
+#define IMAGEIO_H
+
+#include <qstring.h>
+
+class QImage;
+
+void bufferToImage( int _width, int height, unsigned char* bp, QImage* image );
+void imageToFile( QImage* i, const QString& name, const QString& format, int quality );
+
+#endif
diff --git a/noncore/multimedia/camera/mainwindow.cpp b/noncore/multimedia/camera/mainwindow.cpp
index 8e89039..6141fd1 100644
--- a/noncore/multimedia/camera/mainwindow.cpp
+++ b/noncore/multimedia/camera/mainwindow.cpp
@@ -17,4 +17,5 @@
 #include "previewwidget.h"
 #include "zcameraio.h"
+#include "imageio.h"
 
 #include <qapplication.h>
@@ -28,6 +29,8 @@
 #include <qlabel.h>
 #include <qpopupmenu.h>
+#include <qprogressbar.h>
 #include <qpushbutton.h>
 #include <qmessagebox.h>
+#include <qlayout.h>
 #include <qdirectpainter_qws.h>
 #include <qpe/global.h>
@@ -37,11 +40,18 @@
 #include <opie/odevice.h>
 using namespace Opie;
-
 #include <opie2/odebug.h>
 
 #include <assert.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <string.h>
+#include <errno.h>
+#include <unistd.h>
+
+#define CAPTUREFILE "/tmp/capture.dat"
 
 CameraMainWindow::CameraMainWindow( QWidget * parent, const char * name, WFlags f )
-           :QMainWindow( parent, name, f ), _pics( 0 )
+           :QMainWindow( parent, name, f ), _capturing( false ), _pics( 0 )
 {
     #ifdef QT_NO_DEBUG
@@ -79,4 +89,7 @@ CameraMainWindow::CameraMainWindow( QWidget * parent, const char * name, WFlags
 
     connect( ZCameraIO::instance(), SIGNAL( shutterClicked() ), this, SLOT( shutterClicked() ) );
+
+    updateCaption();
+
 };
 
@@ -90,4 +103,5 @@ void CameraMainWindow::init()
 {
     // TODO: Save this stuff in config
+    flip = 'A'; // auto
     quality = 50;
     zoom = 1;
@@ -122,4 +136,12 @@ void CameraMainWindow::init()
     new QAction( "x 2", 0, 0, zoomg, 0, true );
 
+    flipg = new QActionGroup( 0, "flip", true );
+    flipg->setToggleAction( true );
+    ( new QAction( "Auto (recommended)", 0, 0, flipg, 0, true ) )->setOn( true );
+    new QAction( "0 (always off)", 0, 0, flipg, 0, true );
+    new QAction( "X (always horizontal)", 0, 0, flipg, 0, true );
+    new QAction( "Y (always vertical)", 0, 0, flipg, 0, true );
+    new QAction( "* (always both)", 0, 0, flipg, 0, true );
+
     outputg = new QActionGroup( 0, "output", true );
     outputg->setToggleAction( true );
@@ -127,9 +149,12 @@ void CameraMainWindow::init()
     new QAction( "PNG", 0, 0, outputg, 0, true );
     new QAction( "BMP", 0, 0, outputg, 0, true );
+    new QAction( "AVI", 0, 0, outputg, 0, true );
 
     connect( resog, SIGNAL( selected(QAction*) ), this, SLOT( resoMenuItemClicked(QAction*) ) );
     connect( qualityg, SIGNAL( selected(QAction*) ), this, SLOT( qualityMenuItemClicked(QAction*) ) );
     connect( zoomg, SIGNAL( selected(QAction*) ), this, SLOT( zoomMenuItemClicked(QAction*) ) );
+    connect( flipg, SIGNAL( selected(QAction*) ), this, SLOT( flipMenuItemClicked(QAction*) ) );
     connect( outputg, SIGNAL( selected(QAction*) ), this, SLOT( outputMenuItemClicked(QAction*) ) );
+
 }
 
@@ -170,4 +195,5 @@ void CameraMainWindow::changeZoom( int zoom )
 }
 
+
 void CameraMainWindow::showContextMenu()
 {
@@ -180,4 +206,8 @@ void CameraMainWindow::showContextMenu()
     qualityg->addTo( &quality );
 
+    QPopupMenu flip;
+    flip.setCheckable( true );
+    flipg->addTo( &flip );
+
     QPopupMenu zoom;
     zoom.setCheckable( true );
@@ -191,4 +221,5 @@ void CameraMainWindow::showContextMenu()
     m.insertItem( "&Resolution", &reso );
     m.insertItem( "&Zoom", &zoom );
+    m.insertItem( "&Flip", &flip );
     m.insertItem( "&Quality", &quality );
     m.insertItem( "&Output As", &output );
@@ -202,4 +233,5 @@ void CameraMainWindow::resoMenuItemClicked( QAction* a )
     captureY = a->text().right(3).toInt();
     odebug << "Capture Resolution now: " << captureX << ", " << captureY << oendl;
+    updateCaption();
 }
 
@@ -209,4 +241,5 @@ void CameraMainWindow::qualityMenuItemClicked( QAction* a )
     quality = a->text().left(3).toInt();
     odebug << "Quality now: " << quality << oendl;
+    updateCaption();
 }
 
@@ -214,7 +247,27 @@ void CameraMainWindow::qualityMenuItemClicked( QAction* a )
 void CameraMainWindow::zoomMenuItemClicked( QAction* a )
 {
-    zoom = QString( a->text()[2] ).toInt();
+    zoom = QString( a->text().at(2) ).toInt();
     odebug << "Zoom now: " << zoom << oendl;
     ZCameraIO::instance()->setZoom( zoom );
+    updateCaption();
+}
+
+
+void CameraMainWindow::flipMenuItemClicked( QAction* a )
+{
+    flip = QString( a->text().at(0) );
+    odebug << "Flip now: " << flip << oendl;
+    if ( flip == "A" )
+        ZCameraIO::instance()->setFlip( ZCameraIO::AUTOMATICFLIP );
+    else if ( flip == "0" )
+        ZCameraIO::instance()->setFlip( ZCameraIO::XNOFLIP | ZCameraIO::YNOFLIP );
+    else if ( flip == "X" )
+        ZCameraIO::instance()->setFlip( ZCameraIO::XFLIP );
+    else if ( flip == "Y" )
+        ZCameraIO::instance()->setFlip( ZCameraIO::YFLIP );
+    else if ( flip == "*" )
+        ZCameraIO::instance()->setFlip( ZCameraIO::XFLIP | ZCameraIO::YFLIP );
+
+    updateCaption();
 }
 
@@ -224,4 +277,5 @@ void CameraMainWindow::outputMenuItemClicked( QAction* a )
     captureFormat = a->text();
     odebug << "Output format now: " << captureFormat << oendl;
+    updateCaption();
 }
 
@@ -229,9 +283,23 @@ void CameraMainWindow::outputMenuItemClicked( QAction* a )
 void CameraMainWindow::shutterClicked()
 {
-    Global::statusMessage( "CAPTURING..." );
-    qApp->processEvents();
+    if ( captureFormat != "AVI" ) // capture one photo per shutterClick
+    {
+        Global::statusMessage( "CAPTURING..." );
+        qApp->processEvents();
 
-    odebug << "Shutter has been pressed" << oendl;
-    ODevice::inst()->touchSound();
+        odebug << "Shutter has been pressed" << oendl;
+        ODevice::inst()->touchSound();
+
+        performCapture( captureFormat );
+    }
+    else // capture video! start with one shutter click and stop with the next
+    {
+        !_capturing ? startVideoCapture() : stopVideoCapture();
+    }
+}
+
+
+void CameraMainWindow::performCapture( const QString& format )
+{
     QString name;
     name.sprintf( "/tmp/image-%d_%d_%d_q%d.%s", _pics++, captureX, captureY, quality, (const char*) captureFormat.lower() );
@@ -239,5 +307,5 @@ void CameraMainWindow::shutterClicked()
     ZCameraIO::instance()->captureFrame( captureX, captureY, zoom, &i );
     QImage im = i.convertDepth( 32 );
-    bool result = im.save( name, captureFormat, quality );
+    bool result = im.save( name, format, quality );
     if ( !result )
     {
@@ -252,2 +320,116 @@ void CameraMainWindow::shutterClicked()
 }
 
+
+void CameraMainWindow::startVideoCapture()
+{
+    //ODevice::inst()->touchSound();
+    ODevice::inst()->setLedState( Led_Mail, Led_BlinkSlow );
+
+    _capturefd = ::open( CAPTUREFILE, O_WRONLY | O_CREAT );
+    if ( _capturefd == -1 )
+    {
+        owarn << "can't open capture file: " << strerror(errno) << oendl;
+        return;
+    }
+
+    _capturebuf = new unsigned char[captureX*captureY*2];
+    _capturing = true;
+    _videopics = 0;
+    updateCaption();
+    _time.start();
+    preview->setRefreshingRate( 1000 );
+    startTimer( 100 ); // too fast but that is ok
+}
+
+
+void CameraMainWindow::timerEvent( QTimerEvent* )
+{
+    if ( !_capturing )
+    {
+        owarn << "timer event in CameraMainWindow without capturing video ?" << oendl;
+        return;
+    }
+
+    ZCameraIO::instance()->captureFrame( captureX, captureY, zoom, _capturebuf );
+    _videopics++;
+    ::write( _capturefd, _capturebuf, captureX*captureY*2 );
+    setCaption( QString().sprintf( "Capturing %dx%d @ %.2f fps %d",
+        captureX, captureY, 1000.0 / (_time.elapsed()/_videopics), _videopics ) );
+}
+
+
+void CameraMainWindow::stopVideoCapture()
+{
+    killTimers();
+    //ODevice::inst()->touchSound();
+    ODevice::inst()->setLedState( Led_Mail, Led_Off );
+    _capturing = false;
+    updateCaption();
+    ::close( _capturefd );
+
+    //postProcessVideo();
+
+    #ifndef QT_NO_DEBUG
+    preview->setRefreshingRate( 1500 );
+    #else
+    preview->setRefreshingRate( 200 );
+    #endif
+
+    //delete[] _capturebuf; //FIXME: close memory leak
+}
+
+void CameraMainWindow::postProcessVideo()
+{
+    preview->setRefreshingRate( 0 );
+
+    /*
+
+    QDialog* fr = new QDialog( this, "splash" ); //, false, QWidget::WStyle_NoBorder | QWidget::WStyle_Customize );
+    fr->setCaption( "Please wait..." );
+    QVBoxLayout* box = new QVBoxLayout( fr, 2, 2 );
+    QProgressBar* bar = new QProgressBar( fr );
+    bar->setCenterIndicator( true );
+    bar->setTotalSteps( _videopics-1 );
+    QLabel* label = new QLabel( "Post processing frame bla/bla", fr );
+    box->addWidget( bar );
+    box->addWidget( label );
+    fr->show();
+    qApp->processEvents();
+
+    for ( int i = 0; i < _videopics; ++i )
+    {
+        label->setText( QString().sprintf( "Post processing frame %d / %d", i+1, _videopics ) );
+        bar->setProgress( i );
+        qApp->processEvents();
+    }
+
+    */
+
+    int infd = ::open( CAPTUREFILE, O_RDONLY );
+    if ( infd == -1 )
+    {
+        owarn << "couldn't open capture file: " << strerror(errno) << oendl;
+        return;
+    }
+
+    int outfd = ::open( "/tmp/output.avi", O_WRONLY );
+    if ( outfd == -1 )
+    {
+        owarn << "couldn't open output file: " << strerror(errno) << oendl;
+        return;
+    }
+
+
+
+
+}
+
+void CameraMainWindow::updateCaption()
+{
+    if ( !_capturing )
+        setCaption( QString().sprintf( "Opie-Camera: %dx%d %s q%d z%d (%s)", captureX, captureY, (const char*) captureFormat.lower(), quality, zoom, (const char*) flip ) );
+    else
+        setCaption( "Opie-Camera: => CAPTURING <=" );
+}
+
+
diff --git a/noncore/multimedia/camera/mainwindow.h b/noncore/multimedia/camera/mainwindow.h
index 7a12452..ad8d1b1 100644
--- a/noncore/multimedia/camera/mainwindow.h
+++ b/noncore/multimedia/camera/mainwindow.h
@@ -21,8 +21,10 @@
 #include <qimage.h>
 #include <qpixmap.h>
+#include <qdatetime.h>
 
 class QAction;
 class QActionGroup;
 class QIconSet;
+class QTimerEvent;
 class QToolButton;
 class QLabel;
@@ -46,9 +48,18 @@ class CameraMainWindow: public QMainWindow
     void qualityMenuItemClicked( QAction* );
     void zoomMenuItemClicked( QAction* );
+    void flipMenuItemClicked( QAction* );
     void outputMenuItemClicked( QAction* );
     void shutterClicked();
 
+    void updateCaption();
+
   protected:
     void init();
+    void startVideoCapture();
+    void stopVideoCapture();
+    void postProcessVideo();
+    void performCapture( const QString& );
+
+    virtual void timerEvent( QTimerEvent* );
 
   private:
@@ -60,6 +71,8 @@ class CameraMainWindow: public QMainWindow
     QActionGroup* qualityg;
     QActionGroup* zoomg;
+    QActionGroup* flipg;
     QActionGroup* outputg;
 
+    QString flip;
     int quality;
     int zoom;
@@ -68,5 +81,11 @@ class CameraMainWindow: public QMainWindow
     QString captureFormat;
 
+    bool _capturing;
     int _pics;
+
+    QTime _time;
+    int _videopics;
+    int _capturefd;
+    unsigned char* _capturebuf;
 };
 
diff --git a/noncore/multimedia/camera/previewwidget.cpp b/noncore/multimedia/camera/previewwidget.cpp
index f87dcc9..08330d0 100644
--- a/noncore/multimedia/camera/previewwidget.cpp
+++ b/noncore/multimedia/camera/previewwidget.cpp
@@ -73,2 +73,16 @@ void PreviewWidget::mousePressEvent( QMouseEvent* )
 }
 
+
+void PreviewWidget::setRefreshingRate( int ms )
+{
+    killTimers();
+    if ( ms )
+        startTimer( ms );
+}
+
+
+void PreviewWidget::refresh()
+{
+    QTimerEvent t( 10 ); // event id is meaningless in this case
+    timerEvent( &t );
+}
diff --git a/noncore/multimedia/camera/previewwidget.h b/noncore/multimedia/camera/previewwidget.h
index dada301..d37f80f 100644
--- a/noncore/multimedia/camera/previewwidget.h
+++ b/noncore/multimedia/camera/previewwidget.h
@@ -32,4 +32,7 @@ class PreviewWidget: public QLabel
     virtual ~PreviewWidget();
 
+    void setRefreshingRate( int ms );
+    void refresh();
+
   protected:
     virtual void timerEvent( QTimerEvent* );
diff --git a/noncore/multimedia/camera/zcameraio.cpp b/noncore/multimedia/camera/zcameraio.cpp
index 9af0c25..1c449e7 100644
--- a/noncore/multimedia/camera/zcameraio.cpp
+++ b/noncore/multimedia/camera/zcameraio.cpp
@@ -45,5 +45,7 @@ ZCameraIO* ZCameraIO::instance()
 
 ZCameraIO::ZCameraIO()
-          :_height( 0 ), _width( 0 ), _zoom( 0 ), _rot( 0 ), _readlen( 0 )
+          : _pressed( false ), _height( 0 ), _width( 0 ), _zoom( 0 ),
+           _flip( -1 ), _rot( 0 ), _readlen( 0 )
+
 {
     _driver = ::open( SHARPZDC, O_RDWR );
@@ -85,16 +87,22 @@ bool ZCameraIO::isOpen() const
 bool ZCameraIO::isShutterPressed()
 {
-    if ( _timer->elapsed() < 1000 ) //TODO: make this customizable?
-    {
-        clearShutterLatch();
-        return false;
-    }
     if ( _status[0] == 'S' )
     {
-        _timer->restart();
-        clearShutterLatch();
-        return true;
+        if ( !_pressed )    // wasn't pressed before, but is now!
+        {
+            _pressed = true;
+            _timer->start();
+            return true;
+        }
+
+        if ( _timer->elapsed() > 2000 ) // the press is pretty old now
+        {
+            clearShutterLatch();
+            _status[0] = 's';
+            _pressed = false;
+        }
     }
-    else return false;
+
+    return false;
 }
 
@@ -150,9 +158,18 @@ void ZCameraIO::setReadMode( int mode )
     {
         read( _status, 4 );
-        if ( isShutterPressed() ) emit shutterClicked();
+        if ( isShutterPressed() )
+        {
+            emit shutterClicked();
+        }
     }
 }
 
 
+void ZCameraIO::setFlip( int flip )
+{
+    _flip = flip;
+}
+
+
 void ZCameraIO::clearShutterLatch()
 {
@@ -199,13 +216,23 @@ bool ZCameraIO::snapshot( QImage* image )
     odebug << "rotation = " << _rot << oendl;
 
-    if ( _rot ) // Portrait
+    int readmode;
+    if ( _flip == -1 ) // AUTO
     {
-        setReadMode( IMAGE | isFinderReversed() ? XFLIP | YFLIP : 0 );
+        if ( _rot ) // Portrait
+        {
+            readmode = IMAGE | isFinderReversed() ? XFLIP | YFLIP : 0;
+        }
+        else // Landscape
+        {
+            readmode = IMAGE | XFLIP | YFLIP;
+        }
     }
-    else // Landscape
+    else // OVERRIDE
     {
-        setReadMode( IMAGE | XFLIP | YFLIP ); //isFinderReversed() ? 0 : XFLIP );
+        readmode = IMAGE | _flip;
     }
 
+    setReadMode( readmode );
+
     char buf[_readlen];
     char* bp = buf;
@@ -235,16 +262,29 @@ bool ZCameraIO::snapshot( QImage* image )
 bool ZCameraIO::snapshot( unsigned char* buf )
 {
-    setReadMode( IMAGE | XFLIP | YFLIP );
+    setReadMode( STATUS );
 
-    read( (char*) buf, _readlen );
+    odebug << "finder reversed = " << isFinderReversed() << oendl;
+    odebug << "rotation = " << _rot << oendl;
 
-    /* //TESTCODE
-    int fd = open( "/tmp/cam", O_RDONLY );
-    if ( ::read( fd, (char*) buf, 76800 ) != 76800 )
-        owarn << "Couldn't read image from /dev/sharp_zdc" << oendl;
-    // TESTCODE */
+    int readmode;
+    if ( _flip == -1 ) // AUTO
+    {
+        if ( _rot ) // Portrait
+        {
+            readmode = IMAGE | isFinderReversed() ? XFLIP | YFLIP : 0;
+        }
+        else // Landscape
+        {
+            readmode = IMAGE | XFLIP | YFLIP;
+        }
+    }
+    else // OVERRIDE
+    {
+        readmode = IMAGE | _flip;
+    }
 
+    setReadMode( readmode );
+    read( (char*) buf, _readlen );
 
-    return true;
 }
 
@@ -263,2 +303,16 @@ void ZCameraIO::captureFrame( int w, int h, int zoom, QImage* image )
 
 
+void ZCameraIO::captureFrame( int w, int h, int zoom, unsigned char* buf )
+{
+    //FIXME: this is too slow
+    int pw = _width;
+    int ph = _height;
+    if ( _rot )
+        setCaptureFrame( h, w, zoom*256, true );
+    else
+        setCaptureFrame( w, h, zoom*256, false );
+
+    snapshot( buf );
+    setCaptureFrame( pw, ph, _zoom, _rot );
+}
+
diff --git a/noncore/multimedia/camera/zcameraio.h b/noncore/multimedia/camera/zcameraio.h
index edce143..3352a5e 100644
--- a/noncore/multimedia/camera/zcameraio.h
+++ b/noncore/multimedia/camera/zcameraio.h
@@ -34,5 +34,6 @@ class ZCameraIO : public QObject
         FASTER = 0, BETTER = 2,
         XNOFLIP = 0, XFLIP = 4,
-        YNOFLIP = 0, YFLIP = 8
+        YNOFLIP = 0, YFLIP = 8,
+        AUTOMATICFLIP = -1
     };
 
@@ -42,4 +43,5 @@ class ZCameraIO : public QObject
     bool setZoom( int zoom = 0 );
     void setReadMode( int = IMAGE | XFLIP | YFLIP );
+    void setFlip( int flip );
 
     bool isShutterPressed(); // not const, because it calls clearShutterLatch
@@ -48,6 +50,6 @@ class ZCameraIO : public QObject
     bool isFinderReversed() const;
 
-    bool snapshot( unsigned char* );
-    bool snapshot( QImage* );
+    bool snapshot( QImage* image );
+    bool snapshot( unsigned char* buf );
 
     // high level interface
@@ -55,4 +57,5 @@ class ZCameraIO : public QObject
     static ZCameraIO* instance();
     void captureFrame( int w, int h, int zoom, QImage* image );
+    void captureFrame( int w, int h, int zoom, unsigned char* buf );
 
   protected:
@@ -69,8 +72,10 @@ class ZCameraIO : public QObject
     int _driver;
     char _status[4];
+    bool _pressed;
     static ZCameraIO* _instance;
     int _height;
     int _width;
     int _zoom;
+    int _flip;
     bool _rot;
     int _readlen;