- add realtime preview widget with zoom control

The camera driver is damn slow. For a 240x160x16 image, it takes ~100ms. That gives approx. 10fps which is too slow for doing video. :(

8 files changed, 397 insertions, 51 deletions

diff --git a/noncore/multimedia/camera/.cvsignore b/noncore/multimedia/camera/.cvsignore
index 6d678c6..d89e3af 100644
--- a/noncore/multimedia/camera/.cvsignore
+++ b/noncore/multimedia/camera/.cvsignore
@@ -1 +1,5 @@
 config.in
+mainwindowbase.h
+mainwindowbase.cpp
+Makefile
+
diff --git a/noncore/multimedia/camera/camera.pro b/noncore/multimedia/camera/camera.pro
index e937807..2d1faa3 100644
--- a/noncore/multimedia/camera/camera.pro
+++ b/noncore/multimedia/camera/camera.pro
@@ -2,20 +2,22 @@ MOC_DIR         = ./moc
 OBJECTS_DIR     = ./obj
 DESTDIR         = $(OPIEDIR)/bin
 TEMPLATE        = app
 CONFIG          = qt warn_on debug
 
 HEADERS         = zcameraio.h \
+                  previewwidget.h \
                   mainwindow.h
 
 SOURCES         = zcameraio.cpp \
+                  previewwidget.cpp \
                   mainwindow.cpp \
                   main.cpp
 
 INCLUDEPATH     += $(OPIEDIR)/include
 DEPENDPATH      += $(OPIEDIR)/include
 LIBS            += -lqpe -lopiecore2
-INTERFACES      =
+INTERFACES      = mainwindowbase.ui
 TARGET          = opiecam
 
 include ( $(OPIEDIR)/include.pro )
 
diff --git a/noncore/multimedia/camera/mainwindow.cpp b/noncore/multimedia/camera/mainwindow.cpp
index 4218232..8578bce 100644
--- a/noncore/multimedia/camera/mainwindow.cpp
+++ b/noncore/multimedia/camera/mainwindow.cpp
@@ -11,54 +11,50 @@
 ** 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 "mainwindow.h"
+#include "mainwindowbase.h"
 #include "zcameraio.h"
 
 #include <qvbox.h>
+#include <qcombobox.h>
 #include <qpushbutton.h>
 #include <qlabel.h>
-
 #include <qdirectpainter_qws.h>
-
 #include <qpe/resource.h>
 #include <opie/ofiledialog.h>
 
+#include <assert.h>
+
 CameraMainWindow::CameraMainWindow( QWidget * parent, const char * name, WFlags f )
            :QMainWindow( parent, name, f )
 {
-    QVBox* v = new QVBox( this );
-    l = new QLabel( v );
-    l->setFixedSize( QSize( 240, 160 ) );
-    QPushButton* p = new QPushButton( "Snapshot", v );
-    connect( p, SIGNAL( clicked() ), this, SLOT( clickedSnapShot() ) );
-    v->show();
-    l->show();
-    p->show();
-    setCentralWidget( v );
+    mw = new MainWindowBase( this, "main widget" );
+    ZCameraIO::instance()->setCaptureFrame( 240, 160, 256 );
+    setCentralWidget( mw );
+    mw->show();
 
+    connect( mw->zoom, SIGNAL( activated( int ) ), this, SLOT( changeZoom(int) ) );
 };
 
 
 CameraMainWindow::~CameraMainWindow()
 {
 }
 
 
-void CameraMainWindow::clickedSnapShot()
+void CameraMainWindow::changeZoom( int zoom )
 {
-    QDirectPainter fb( l );
-    ZCameraIO::instance()->snapshot( fb.frameBuffer() );
-
-    /*
-    QImage i;
-    QPixmap p;
-    if ( ZCameraIO::instance()->snapshot( &i ) )
+    int z;
+    switch ( zoom )
     {
-        p.convertFromImage( i );
-        l->setPixmap( p );
+        case 0: z = 128; break;
+        case 1: z = 256; break;
+        case 2: z = 512; break;
+        default: assert( 0 ); break;
     }
-    */
+
+    ZCameraIO::instance()->setCaptureFrame( 240, 160, z );
 }
 
diff --git a/noncore/multimedia/camera/mainwindow.h b/noncore/multimedia/camera/mainwindow.h
index 521107b..7ccdcf8 100644
--- a/noncore/multimedia/camera/mainwindow.h
+++ b/noncore/multimedia/camera/mainwindow.h
@@ -14,29 +14,33 @@
 **********************************************************************/
 
 #ifndef MAINWINDOW_H
 #define MAINWINDOW_H
 
 #include <qmainwindow.h>
+#include <qdatetime.h>
+#include <qimage.h>
+#include <qpixmap.h>
 
 class QIconSet;
 class QToolButton;
 class QLabel;
+class MainWindowBase;
 
 class CameraMainWindow: public QMainWindow
 {
   Q_OBJECT
 
   public:
     CameraMainWindow( QWidget * parent = 0, const char * name = "mainwindow", WFlags f = 0 );
     virtual ~CameraMainWindow();
 
-  protected:
-
   public slots:
-    void clickedSnapShot();
+    void changeZoom( int );
+
+  protected:
 
   private:
-    QLabel* l;
+    MainWindowBase* mw;
 };
 
 #endif
diff --git a/noncore/multimedia/camera/mainwindowbase.ui b/noncore/multimedia/camera/mainwindowbase.ui
new file mode 100644
index 0000000..8da884a
--- a/dev/null
+++ b/noncore/multimedia/camera/mainwindowbase.ui
@@ -0,0 +1,246 @@
+<!DOCTYPE UI><UI>
+<class>MainWindowBase</class>
+<widget>
+    <class>QWidget</class>
+    <property stdset="1">
+        <name>name</name>
+        <cstring>MainWindowBase</cstring>
+    </property>
+    <property stdset="1">
+        <name>geometry</name>
+        <rect>
+            <x>0</x>
+            <y>0</y>
+            <width>242</width>
+            <height>329</height>
+        </rect>
+    </property>
+    <property stdset="1">
+        <name>caption</name>
+        <string>Form1</string>
+    </property>
+    <property>
+        <name>layoutMargin</name>
+    </property>
+    <property>
+        <name>layoutSpacing</name>
+    </property>
+    <grid>
+        <property stdset="1">
+            <name>margin</name>
+            <number>0</number>
+        </property>
+        <property stdset="1">
+            <name>spacing</name>
+            <number>2</number>
+        </property>
+        <widget row="1"  column="0" >
+            <class>QLayoutWidget</class>
+            <property stdset="1">
+                <name>name</name>
+                <cstring>Layout1</cstring>
+            </property>
+            <hbox>
+                <property stdset="1">
+                    <name>margin</name>
+                    <number>0</number>
+                </property>
+                <property stdset="1">
+                    <name>spacing</name>
+                    <number>6</number>
+                </property>
+                <widget>
+                    <class>QLabel</class>
+                    <property stdset="1">
+                        <name>name</name>
+                        <cstring>TextLabel1</cstring>
+                    </property>
+                    <property stdset="1">
+                        <name>text</name>
+                        <string>Reso:</string>
+                    </property>
+                </widget>
+                <widget>
+                    <class>QComboBox</class>
+                    <item>
+                        <property>
+                            <name>text</name>
+                            <string>240x160</string>
+                        </property>
+                    </item>
+                    <item>
+                        <property>
+                            <name>text</name>
+                            <string>480x320</string>
+                        </property>
+                    </item>
+                    <property stdset="1">
+                        <name>name</name>
+                        <cstring>resolution</cstring>
+                    </property>
+                </widget>
+                <widget>
+                    <class>QLabel</class>
+                    <property stdset="1">
+                        <name>name</name>
+                        <cstring>TextLabel2</cstring>
+                    </property>
+                    <property stdset="1">
+                        <name>text</name>
+                        <string>Zoom:</string>
+                    </property>
+                </widget>
+                <widget>
+                    <class>QComboBox</class>
+                    <item>
+                        <property>
+                            <name>text</name>
+                            <string>Half</string>
+                        </property>
+                    </item>
+                    <item>
+                        <property>
+                            <name>text</name>
+                            <string>Full</string>
+                        </property>
+                    </item>
+                    <item>
+                        <property>
+                            <name>text</name>
+                            <string>Double</string>
+                        </property>
+                    </item>
+                    <property stdset="1">
+                        <name>name</name>
+                        <cstring>zoom</cstring>
+                    </property>
+                </widget>
+            </hbox>
+        </widget>
+        <widget row="2"  column="0" >
+            <class>QLayoutWidget</class>
+            <property stdset="1">
+                <name>name</name>
+                <cstring>Layout2</cstring>
+            </property>
+            <hbox>
+                <property stdset="1">
+                    <name>margin</name>
+                    <number>0</number>
+                </property>
+                <property stdset="1">
+                    <name>spacing</name>
+                    <number>6</number>
+                </property>
+                <spacer>
+                    <property>
+                        <name>name</name>
+                        <cstring>Spacer1</cstring>
+                    </property>
+                    <property stdset="1">
+                        <name>orientation</name>
+                        <enum>Horizontal</enum>
+                    </property>
+                    <property stdset="1">
+                        <name>sizeType</name>
+                        <enum>Expanding</enum>
+                    </property>
+                    <property>
+                        <name>sizeHint</name>
+                        <size>
+                            <width>20</width>
+                            <height>20</height>
+                        </size>
+                    </property>
+                </spacer>
+                <widget>
+                    <class>QPushButton</class>
+                    <property stdset="1">
+                        <name>name</name>
+                        <cstring>PushButton1</cstring>
+                    </property>
+                    <property stdset="1">
+                        <name>text</name>
+                        <string>Take Photo</string>
+                    </property>
+                    <property stdset="1">
+                        <name>default</name>
+                        <bool>true</bool>
+                    </property>
+                </widget>
+                <spacer>
+                    <property>
+                        <name>name</name>
+                        <cstring>Spacer2</cstring>
+                    </property>
+                    <property stdset="1">
+                        <name>orientation</name>
+                        <enum>Horizontal</enum>
+                    </property>
+                    <property stdset="1">
+                        <name>sizeType</name>
+                        <enum>Expanding</enum>
+                    </property>
+                    <property>
+                        <name>sizeHint</name>
+                        <size>
+                            <width>20</width>
+                            <height>20</height>
+                        </size>
+                    </property>
+                </spacer>
+            </hbox>
+        </widget>
+        <spacer row="3"  column="0" >
+            <property>
+                <name>name</name>
+                <cstring>Spacer3</cstring>
+            </property>
+            <property stdset="1">
+                <name>orientation</name>
+                <enum>Vertical</enum>
+            </property>
+            <property stdset="1">
+                <name>sizeType</name>
+                <enum>Expanding</enum>
+            </property>
+            <property>
+                <name>sizeHint</name>
+                <size>
+                    <width>20</width>
+                    <height>20</height>
+                </size>
+            </property>
+        </spacer>
+        <widget row="0"  column="0" >
+            <class>PreviewWidget</class>
+            <property stdset="1">
+                <name>name</name>
+                <cstring>preview</cstring>
+            </property>
+        </widget>
+    </grid>
+</widget>
+<customwidgets>
+    <customwidget>
+        <class>PreviewWidget</class>
+        <header location="local">previewwidget.h</header>
+        <sizehint>
+            <width>240</width>
+            <height>160</height>
+        </sizehint>
+        <container>0</container>
+        <sizepolicy>
+            <hordata>0</hordata>
+            <verdata>0</verdata>
+        </sizepolicy>
+        <pixmap>image0</pixmap>
+    </customwidget>
+</customwidgets>
+<images>
+    <image>
+        <name>image0</name>
+        <data format="XPM.GZ" length="646">789c6dd2c10ac2300c00d07bbf2234b7229d1ddec44f503c0ae2a154410f53d0ed20e2bf6bdb656dd6861dd23d9a66591b0587fd1654235ebded6f0edcd53e419d87ae7b1f4f9b8f906d0bfe012317426a70b07bdc2f3ec77f8ed6b89559061a0343d06a124cc105596482585094bc0ae599b04646c9018926491b2205e140c485cace25755c175d0a967b622ff900b8cc9c7d29af594ea722d589167f813aa852ba07d94b9dce296e883fe7bb163f23896753</data>
+    </image>
+</images>
+</UI>
diff --git a/noncore/multimedia/camera/previewwidget.cpp b/noncore/multimedia/camera/previewwidget.cpp
new file mode 100644
index 0000000..bb84c00
--- a/dev/null
+++ b/noncore/multimedia/camera/previewwidget.cpp
@@ -0,0 +1,45 @@
+/**********************************************************************
+** 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 "previewwidget.h"
+#include "zcameraio.h"
+
+PreviewWidget::PreviewWidget( QWidget * parent, const char * name, WFlags f )
+           :QLabel( parent, name, f )
+{
+    setFixedSize( QSize( 240, 160 ) );
+    setBackgroundMode( NoBackground );
+
+    startTimer( 150 );
+};
+
+
+PreviewWidget::~PreviewWidget()
+{
+}
+
+
+void PreviewWidget::timerEvent( QTimerEvent*  )
+{
+    //QDirectPainter fb( this );
+    //ZCameraIO::instance()->snapshot( fb.frameBuffer() );
+
+    if ( ZCameraIO::instance()->snapshot( &i ) )
+    {
+        p.convertFromImage( i );
+        setPixmap( p );
+    }
+}
+
diff --git a/noncore/multimedia/camera/previewwidget.h b/noncore/multimedia/camera/previewwidget.h
new file mode 100644
index 0000000..c031d95
--- a/dev/null
+++ b/noncore/multimedia/camera/previewwidget.h
@@ -0,0 +1,39 @@
+/**********************************************************************
+** 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 PREVIEWWIDGET_H
+#define PREVIEWWIDGET_H
+
+#include <qlabel.h>
+#include <qimage.h>
+#include <qpixmap.h>
+
+class PreviewWidget: public QLabel
+{
+  Q_OBJECT
+
+  public:
+    PreviewWidget( QWidget * parent = 0, const char * name = 0, WFlags f = 0 );
+    virtual ~PreviewWidget();
+
+  protected:
+    virtual void timerEvent( QTimerEvent* );
+
+  private:
+    QPixmap p;
+    QImage i;
+};
+
+#endif
diff --git a/noncore/multimedia/camera/zcameraio.cpp b/noncore/multimedia/camera/zcameraio.cpp
index 7343dca..56b2e13 100644
--- a/noncore/multimedia/camera/zcameraio.cpp
+++ b/noncore/multimedia/camera/zcameraio.cpp
@@ -21,15 +21,18 @@
 #include <string.h>
 #include <fcntl.h>
 #include <unistd.h>
 #include <stdio.h>
 
 #include <qimage.h>
+#include <qdatetime.h>
 
 #include <opie2/odebug.h>
 
+#define SHARPZDC "/dev/sharp_zdc"
+
 ZCameraIO* ZCameraIO::_instance = 0;
 
 ZCameraIO* ZCameraIO::instance()
 {
     if ( !ZCameraIO::_instance )
     {
@@ -40,13 +43,13 @@ ZCameraIO* ZCameraIO::instance()
 }
 
 
 ZCameraIO::ZCameraIO()
           :_height( 0 ), _width( 0 ), _zoom( 0 ), _rot( 0 ), _readlen( 0 )
 {
-    _driver = ::open( "/dev/sharp_zdc", O_RDWR );
+    _driver = ::open( SHARPZDC, O_RDWR );
     if ( _driver == -1 )
         oerr << "Can't open camera driver: " << strerror(errno) << oendl;
     else
         init();
 }
 
@@ -62,14 +65,17 @@ void ZCameraIO::init()
 }
 
 
 ZCameraIO::~ZCameraIO()
 {
     if ( _driver != -1 )
+    {
+        setReadMode( 0 );
         ::close( _driver );
 }
+}
 
 
 inline bool ZCameraIO::isOpen() const
 {
     return _driver != -1;
 }
@@ -104,25 +110,25 @@ bool ZCameraIO::setCaptureFrame( int width, int height, int zoom, bool rot )
 {
     char b[100];
     sprintf( b, "%c=%d,%d,%d,%d", rot ? 'R':'S', width, height, zoom, width*2 );
     if ( write( b ) )
     {
         _width = width;
-        _height = _height;
+        _height = height;
         _zoom = zoom;
         _rot = rot;
         _readlen = 2 * _width * _height; // camera is fixed @ 16 bits per pixel
         return true;
     }
     return false;
 }
 
 
 void ZCameraIO::setReadMode( int mode )
 {
-    char b[4];
+    char b[10];
     sprintf( b, "M=%d", mode );
     write( b, mode <= 9 ? 3 : 4 );
     if ( mode & 1 ) // STATUS bit is set
         read( _status, 4 );
 }
 
@@ -133,14 +139,26 @@ void ZCameraIO::clearShutterLatch()
     write( &b, 1 );
 }
 
 
 bool ZCameraIO::read( char* b, int len )
 {
+    #ifndef NO_TIMING
+    QTime t;
+    t.start();
+    #endif
     int rlen = ::read( _driver, b, len );
-    odebug << "read " << rlen << " from driver." << oendl;
+    #ifndef NO_TIMING
+    int time = t.elapsed();
+    #else
+    int time = -1;
+    #endif
+    if ( rlen )
+        odebug << "read " << rlen << " ('" << b[0] << b[1] << b[2] << b[3] << "') [" << time << " ms] from driver." << oendl;
+    else
+        odebug << "read nothing from driver." << oendl;
     return rlen == len;
 }
 
 
 bool ZCameraIO::write( char* buf, int len )
 {
@@ -152,33 +170,18 @@ bool ZCameraIO::write( char* buf, int len )
     return ::write( _driver, buf, len ) == len;
 }
 
 
 bool ZCameraIO::snapshot( QImage* image )
 {
-    /*
-
+    setReadMode( IMAGE | XFLIP | YFLIP );
     char buf[76800];
-
-    write( _driver, "M=13", 4 );
-    write( _driver, "R=240,160,256,480", 17 );
-    write( _driver, "M=12", 4 );
-
-    int result = read( _driver, &buf, sizeof buf );
-
-    return result == sizeof buf;
-
-    */
-
-    unsigned char buf[76800];
-    unsigned char* bp = buf;
+    char* bp = buf;
     unsigned char* p;
 
-    int fd = open( "/tmp/cam", O_RDONLY );
-    if ( ::read( fd, buf, sizeof buf ) != sizeof buf )
-        owarn << "Couldn't read image from /dev/sharp_zdc" << oendl;
+    read( bp, _readlen );
 
     image->create( 240, 160, 16 );
     for ( int i = 0; i < 160; ++i )
     {
         p = image->scanLine( i );
         for ( int j = 0; j < 240; j++ )
@@ -192,15 +195,22 @@ bool ZCameraIO::snapshot( QImage* image )
         }
     }
 
     return true;
 }
 
-bool ZCameraIO::snapshot( uchar* buf )
+bool ZCameraIO::snapshot( unsigned char* buf )
 {
+    setReadMode( IMAGE | XFLIP | YFLIP );
+
+    read( (char*) buf, _readlen );
+
+    /* //TESTCODE
     int fd = open( "/tmp/cam", O_RDONLY );
-    if ( ::read( fd, buf, 76800 ) != 76800 )
+    if ( ::read( fd, (char*) buf, 76800 ) != 76800 )
         owarn << "Couldn't read image from /dev/sharp_zdc" << oendl;
+    // TESTCODE */
+
 
     return true;
 }