Added some missing files for camera support

extras/juce demo/src/binarydata/CameraDemo.cpp

@@ -0,0 +1,204 @@
+/*
+  ==============================================================================
+
+   This file is part of the JUCE library - "Jules' Utility Class Extensions"
+   Copyright 2004-7 by Raw Material Software ltd.
+
+  ------------------------------------------------------------------------------
+
+   JUCE can be redistributed and/or modified under the terms of the
+   GNU General Public License, as published by the Free Software Foundation;
+   either version 2 of the License, or (at your option) any later version.
+
+   JUCE is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with JUCE; if not, visit www.gnu.org/licenses or write to the
+   Free Software Foundation, Inc., 59 Temple Place, Suite 330,
+   Boston, MA 02111-1307 USA
+
+  ------------------------------------------------------------------------------
+
+   If you'd like to release a closed-source product which uses JUCE, commercial
+   licenses are also available: visit www.rawmaterialsoftware.com/juce for
+   more information.
+
+  ==============================================================================
+*/
+
+#include "../jucedemo_headers.h"
+
+#if JUCE_USE_CAMERA
+
+
+//==============================================================================
+class CameraDemo  : public Component,
+                    public ComboBoxListener,
+                    public ButtonListener,
+                    public CameraImageListener
+{
+public:
+    //==============================================================================
+    CameraDemo()
+    {
+        setName (T("Camera"));
+
+        cameraDevice = 0;
+        cameraPreviewComp = 0;
+        lastSnapshot = 0;
+        recordingMovie = false;
+
+        addAndMakeVisible (cameraSelectorComboBox = new ComboBox (T("Camera")));
+        createListOfCameras();
+        cameraSelectorComboBox->setSelectedId (1);
+        cameraSelectorComboBox->addListener (this);
+
+        addAndMakeVisible (snapshotButton = new TextButton (T("Take a snapshot")));
+        snapshotButton->addButtonListener (this);
+        snapshotButton->setEnabled (false);
+
+        addAndMakeVisible (recordMovieButton = new TextButton (T("Record a movie file (to your desktop)...")));
+        recordMovieButton->addButtonListener (this);
+        recordMovieButton->setEnabled (false);
+
+        cameraSelectorComboBox->setSelectedId (2);
+    }
+
+    ~CameraDemo()
+    {
+        deleteAllChildren();
+        delete cameraDevice;
+        delete lastSnapshot;
+    }
+
+    void paint (Graphics& g)
+    {
+        if (lastSnapshot != 0)
+            g.drawImageWithin (lastSnapshot,
+                               getWidth() / 2 + 10, 40,
+                               getWidth() / 2 - 20, getHeight() - 50,
+                               RectanglePlacement::centred, false);
+    }
+
+    void resized()
+    {
+        cameraSelectorComboBox->setBounds (10, 4, 250, 24);
+        snapshotButton->changeWidthToFitText (24);
+        snapshotButton->setTopLeftPosition (cameraSelectorComboBox->getRight() + 20, 4);
+        recordMovieButton->changeWidthToFitText (24);
+        recordMovieButton->setTopLeftPosition (snapshotButton->getRight() + 20, 4);
+
+        if (cameraPreviewComp != 0)
+            cameraPreviewComp->setBounds (10, 40, getWidth() / 2 - 20, getHeight() - 50);
+    }
+
+    void comboBoxChanged (ComboBox*)
+    {
+        // This is called when the user chooses a camera from the drop-down list.
+        deleteAndZero (cameraDevice);
+        deleteAndZero (cameraPreviewComp);
+        recordingMovie = false;
+
+        if (cameraSelectorComboBox->getSelectedId() > 1)
+        {
+            // Try to open the user's choice of camera..
+            cameraDevice = CameraDevice::openDevice (cameraSelectorComboBox->getSelectedId() - 2);
+
+            // and if it worked, create a preview component for it..
+            if (cameraDevice != 0)
+                addAndMakeVisible (cameraPreviewComp = cameraDevice->createViewerComponent());
+        }
+
+        snapshotButton->setEnabled (cameraDevice != 0);
+        recordMovieButton->setEnabled (cameraDevice != 0);
+        resized();
+    }
+
+    void createListOfCameras()
+    {
+        cameraSelectorComboBox->clear();
+        cameraSelectorComboBox->addItem ("No camera", 1);
+        cameraSelectorComboBox->addSeparator();
+
+        StringArray cameras = CameraDevice::getAvailableDevices();
+
+        for (int i = 0; i < cameras.size(); ++i)
+            cameraSelectorComboBox->addItem (cameras[i], i + 2);
+    }
+
+    void buttonClicked (Button* b)
+    {
+        if (cameraDevice != 0)
+        {
+            if (b == recordMovieButton)
+            {
+                // The user has clicked the record movie button..
+                if (! recordingMovie)
+                {
+                    // Start recording to a file on the user's desktop..
+                    recordingMovie = true;
+
+                    File file (File::getSpecialLocation (File::userDesktopDirectory)
+                                .getNonexistentChildFile (T("JuceCameraDemo"),
+                                                          CameraDevice::getFileExtension()));
+
+                    cameraDevice->startRecordingToFile (file);
+                    recordMovieButton->setButtonText (T("Stop Recording"));
+                }
+                else
+                {
+                    // Already recording, so stop...
+                    recordingMovie = false;
+                    cameraDevice->stopRecording();
+                    recordMovieButton->setButtonText (T("Start recording (to a file on your desktop)"));
+                }
+            }
+            else
+            {
+                // When the user clicks the snapshot button, we'll attach ourselves to
+                // the camera as a listener, and wait for an image to arrive...
+                cameraDevice->addListener (this);
+            }
+        }
+    }
+
+    // This is called by the camera device when a new image arrives
+    void imageReceived (Image& image)
+    {
+        // In this app we just want to take one image, so as soon as this happens,
+        // we'll unregister ourselves as a listener.
+        if (cameraDevice != 0)
+            cameraDevice->removeListener (this);
+
+        // This callback won't be on the message thread, so need to lock it before using
+        // data that may already be in use..
+        const MessageManagerLock mm;
+        deleteAndZero (lastSnapshot);
+        lastSnapshot = image.createCopy();
+        repaint();
+    }
+
+private:
+    //==============================================================================
+    CameraDevice* cameraDevice;
+
+    ComboBox* cameraSelectorComboBox;
+    TextButton* snapshotButton;
+    TextButton* recordMovieButton;
+    Component* cameraPreviewComp;
+    bool recordingMovie;
+
+    Image* lastSnapshot;
+};
+
+
+//==============================================================================
+Component* createCameraDemo()
+{
+    return new CameraDemo();
+}
+
+#endif