Cleanup

camera/ext.manifest

@@ -0,0 +1,18 @@
+name: "Camera"
+
+platforms:
+  x86_64-osx:
+    context:
+        frameworks: ["AVFoundation", "CoreMedia"]
+        
+  x86-osx:
+    context:
+        frameworks: ["AVFoundation", "CoreMedia"]
+
+  arm64-ios:
+    context:
+        frameworks: ["AVFoundation", "CoreMedia"]
+
+  armv7-ios:
+    context:
+        frameworks: ["AVFoundation", "CoreMedia"]

camera/src/camera.cpp

@@ -0,0 +1,183 @@
+#include <assert.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+
+#define EXTENSION_NAME Camera
+#define LIB_NAME "Camera"
+#define MODULE_NAME "camera"
+
+// Defold SDK
+#define DLIB_LOG_DOMAIN LIB_NAME
+#include <dmsdk/sdk.h>
+
+#if defined(DM_PLATFORM_IOS) || defined(DM_PLATFORM_OSX)
+
+#include "camera_private.h"
+
+struct DefoldCamera
+{
+    // The buffer that receives the pixel data
+    dmBuffer::HBuffer m_VideoBuffer;
+
+    // We create the buffer once, and keep a reference to it throughout
+    // the capture.
+    int m_VideoBufferLuaRef;
+
+    // Information about the currently set camera
+    CameraInfo  m_Params;
+};
+
+DefoldCamera g_DefoldCamera;
+
+
+static int StartCapture(lua_State* L)
+{
+    DM_LUA_STACK_CHECK(L, 1);
+
+    CameraType type = (CameraType) luaL_checkint(L, 1);
+
+	int status = CameraPlatform_StartCapture(&g_DefoldCamera.m_VideoBuffer, type, g_DefoldCamera.m_Params);
+
+	lua_pushboolean(L, status > 0);
+	if( status == 0 )
+	{
+        printf("capture failed!\n");
+		return 1;
+	}
+
+    const uint32_t size = g_DefoldCamera.m_Params.m_Width * g_DefoldCamera.m_Params.m_Height;
+
+    {
+	    uint8_t* data = 0;
+	    uint32_t datasize = 0;
+	    dmBuffer::GetBytes(g_DefoldCamera.m_VideoBuffer, (void**)&data, &datasize);
+	}
+
+    // Increase ref count
+    dmScript::PushBuffer(L, g_DefoldCamera.m_VideoBuffer);
+    g_DefoldCamera.m_VideoBufferLuaRef = dmScript::Ref(L, LUA_REGISTRYINDEX);
+
+	return 1;
+}
+
+static int StopCapture(lua_State* L)
+{
+    DM_LUA_STACK_CHECK(L, 0);
+
+	int status = CameraPlatform_StopCapture();
+	if( !status )
+	{
+        luaL_error(L, "Failed to stop capture. Was it started?");
+	}
+
+    dmScript::Unref(L, LUA_REGISTRYINDEX, g_DefoldCamera.m_VideoBufferLuaRef); // We want it destroyed by the GC
+
+    return 0;
+}
+
+static int GetInfo(lua_State* L)
+{
+    DM_LUA_STACK_CHECK(L, 1);
+
+    lua_newtable(L);
+    lua_pushstring(L, "width");
+    lua_pushnumber(L, g_DefoldCamera.m_Params.m_Width);
+    lua_rawset(L, -3);
+    lua_pushstring(L, "height");
+    lua_pushnumber(L, g_DefoldCamera.m_Params.m_Height);
+    lua_rawset(L, -3);
+    lua_pushstring(L, "bytes_per_pixel");
+    lua_pushnumber(L, 3);
+    lua_rawset(L, -3);
+    lua_pushstring(L, "type");
+    lua_pushinteger(L, g_DefoldCamera.m_Params.m_Type);
+    lua_rawset(L, -3);
+
+    return 1;
+}
+
+static int GetFrame(lua_State* L)
+{
+    DM_LUA_STACK_CHECK(L, 1);
+    lua_rawgeti(L,LUA_REGISTRYINDEX, g_DefoldCamera.m_VideoBufferLuaRef);
+    return 1;
+}
+
+
+static const luaL_reg Module_methods[] =
+{
+    {"start_capture", StartCapture},
+    {"stop_capture", StopCapture},
+    {"get_frame", GetFrame},
+    {"get_info", GetInfo},
+    {0, 0}
+};
+
+static void LuaInit(lua_State* L)
+{
+    int top = lua_gettop(L);
+    luaL_register(L, MODULE_NAME, Module_methods);
+
+#define SETCONSTANT(name) \
+        lua_pushnumber(L, (lua_Number) name); \
+        lua_setfield(L, -2, #name);\
+
+    SETCONSTANT(CAMERA_TYPE_FRONT)
+    SETCONSTANT(CAMERA_TYPE_BACK)
+
+#undef SETCONSTANT
+
+    lua_pop(L, 1);
+    assert(top == lua_gettop(L));
+}
+
+dmExtension::Result AppInitializeCamera(dmExtension::AppParams* params)
+{
+    return dmExtension::RESULT_OK;
+}
+
+dmExtension::Result InitializeCamera(dmExtension::Params* params)
+{
+    LuaInit(params->m_L);
+    return dmExtension::RESULT_OK;
+}
+
+dmExtension::Result AppFinalizeCamera(dmExtension::AppParams* params)
+{
+    return dmExtension::RESULT_OK;
+}
+
+dmExtension::Result FinalizeCamera(dmExtension::Params* params)
+{
+    return dmExtension::RESULT_OK;
+}
+
+#else // unsupported platforms
+
+
+static dmExtension::Result AppInitializeCamera(dmExtension::AppParams* params)
+{
+    dmLogInfo("Registered %s (null) Extension\n", MODULE_NAME);
+    return dmExtension::RESULT_OK;
+}
+
+static dmExtension::Result InitializeCamera(dmExtension::Params* params)
+{
+    return dmExtension::RESULT_OK;
+}
+
+static dmExtension::Result AppFinalizeCamera(dmExtension::AppParams* params)
+{
+    return dmExtension::RESULT_OK;
+}
+
+static dmExtension::Result FinalizeCamera(dmExtension::Params* params)
+{
+    return dmExtension::RESULT_OK;
+}
+
+#endif // platforms
+
+
+DM_DECLARE_EXTENSION(EXTENSION_NAME, LIB_NAME, AppInitializeCamera, AppFinalizeCamera, InitializeCamera, 0, 0, FinalizeCamera)

camera/src/camera.mm

@@ -0,0 +1,392 @@
+#include <dmsdk/sdk.h>
+#include "camera_private.h"
+
+#if defined(DM_PLATFORM_IOS) || defined(DM_PLATFORM_OSX)
+
+#include <AVFoundation/AVFoundation.h>
+
+// Some good reads on capturing camera/video for iOS/macOS
+//   http://easynativeextensions.com/camera-tutorial-part-4-connect-to-the-camera-in-objective-c/
+//   https://developer.apple.com/library/content/qa/qa1702/_index.html
+//   http://stackoverflow.com/questions/19422322/method-to-find-devices-camera-resolution-ios
+//   http://stackoverflow.com/a/32047525
+
+
+@interface CameraCaptureDelegate : NSObject <AVCaptureVideoDataOutputSampleBufferDelegate>
+{
+	@private AVCaptureSession* 			m_captureSession;
+	@private AVCaptureDevice*			m_camera;
+	@private AVCaptureDeviceInput* 		m_cameraInput;
+	@private AVCaptureVideoDataOutput*	m_videoOutput;
+	@private dispatch_queue_t 			m_Queue;
+	@public  CMVideoDimensions 			m_Size;
+}
+@end
+
+struct IOSCamera
+{
+	CameraCaptureDelegate* m_Delegate;
+	dmBuffer::HBuffer m_VideoBuffer;
+	// TODO: Support audio buffers
+
+	IOSCamera() : m_Delegate(0)
+	{
+	}
+};
+
+IOSCamera g_Camera;
+
+@implementation CameraCaptureDelegate
+
+
+- ( id ) init
+{
+    self = [ super init ];
+    m_captureSession    = NULL;
+    m_camera            = NULL;
+    m_cameraInput       = NULL;
+    m_videoOutput       = NULL;
+    return self;
+}
+
+
+- ( void ) onVideoError: ( NSString * ) error
+{
+    NSLog(@"%@",error);
+}
+
+- ( void ) onVideoStart: ( NSNotification * ) note
+{
+    // perhaps add callback
+}
+
+- ( void ) onVideoStop: ( NSNotification * ) note
+{
+    // perhaps add callback
+}
+
+
+// Delegate routine that is called when a sample buffer was written
+- (void)captureOutput:(AVCaptureOutput *)captureOutput
+         didOutputSampleBuffer:(CMSampleBufferRef)sampleBuffer
+         fromConnection:(AVCaptureConnection *)connection
+{
+    if( captureOutput == m_videoOutput )
+    {
+	    uint8_t* data = 0;
+	    uint32_t datasize = 0;
+	    dmBuffer::GetBytes(g_Camera.m_VideoBuffer, (void**)&data, &datasize);
+
+	    CVImageBufferRef imageBuffer = CMSampleBufferGetImageBuffer(sampleBuffer);
+	    CVPixelBufferLockBaseAddress(imageBuffer,0);
+
+	    size_t bytesPerRow = CVPixelBufferGetBytesPerRow(imageBuffer);
+	    size_t width = CVPixelBufferGetWidth(imageBuffer);
+	    size_t height = CVPixelBufferGetHeight(imageBuffer);
+
+	    if( width != g_Camera.m_Delegate->m_Size.width || height != g_Camera.m_Delegate->m_Size.height )
+	    {
+	    	CVPixelBufferUnlockBaseAddress(imageBuffer, 0);
+	    	return;
+	    }
+
+	    uint8_t* pixels = (uint8_t*)CVPixelBufferGetBaseAddress(imageBuffer);
+
+	    for( int y = 0; y < height; ++y )
+		{
+	    	for( int x = 0; x < width; ++x )
+	    	{
+	    		// RGB < BGR(A)
+#if defined(DM_PLATFORM_IOS)
+                // Flip X
+	    		data[y*width*3 + x*3 + 2] = pixels[y * bytesPerRow + bytesPerRow - (x+1) * 4 + 0];
+	    		data[y*width*3 + x*3 + 1] = pixels[y * bytesPerRow + bytesPerRow - (x+1) * 4 + 1];
+	    		data[y*width*3 + x*3 + 0] = pixels[y * bytesPerRow + bytesPerRow - (x+1) * 4 + 2];
+#else
+                // Flip X + Y
+                data[y*width*3 + x*3 + 2] = pixels[(height - y - 1) * bytesPerRow + bytesPerRow - (x+1) * 4 + 0];
+                data[y*width*3 + x*3 + 1] = pixels[(height - y - 1) * bytesPerRow + bytesPerRow - (x+1) * 4 + 1];
+                data[y*width*3 + x*3 + 0] = pixels[(height - y - 1) * bytesPerRow + bytesPerRow - (x+1) * 4 + 2];
+#endif
+
+	    	}
+		}
+
+	    CVPixelBufferUnlockBaseAddress(imageBuffer, 0);
+	    dmBuffer::ValidateBuffer(g_Camera.m_VideoBuffer);
+	}
+}
+
+- (void)captureOutput:(AVCaptureOutput *)captureOutput 
+  didDropSampleBuffer:(CMSampleBufferRef)sampleBuffer 
+       fromConnection:(AVCaptureConnection *)connection
+{
+
+	NSLog(@"DROPPING FRAME!!!");
+}
+
+
+// http://easynativeextensions.com/camera-tutorial-part-4-connect-to-the-camera-in-objective-c
+- ( BOOL ) findCamera: (AVCaptureDevicePosition) cameraPosition
+{
+    // 0. Make sure we initialize our camera pointer:
+    m_camera = NULL;
+
+    // 1. Get a list of available devices:
+    // specifying AVMediaTypeVideo will ensure we only get a list of cameras, no microphones
+    NSArray * devices = [ AVCaptureDevice devicesWithMediaType: AVMediaTypeVideo ];
+
+    // 2. Iterate through the device array and if a device is a camera, check if it's the one we want:
+    for ( AVCaptureDevice * device in devices )
+    {
+        if ( cameraPosition == [ device position ] )
+        {
+            m_camera = device;
+        }
+    }
+
+    // 3. Set a frame rate for the camera:
+    if ( NULL != m_camera )
+    {
+#if defined(DM_PLATFORM_IOS)
+        // We firt need to lock the camera, so noone else can mess with its configuration:
+        if ( [ m_camera lockForConfiguration: NULL ] )
+        {
+            // Set a minimum frame rate of 10 frames per second
+            [ m_camera setActiveVideoMinFrameDuration: CMTimeMake( 1, 10 ) ];
+            // and a maximum of 30 frames per second
+            [ m_camera setActiveVideoMaxFrameDuration: CMTimeMake( 1, 30 ) ];
+
+            [ m_camera unlockForConfiguration ];
+        }
+#endif
+    }
+
+    // 4. If we've found the camera we want, return true
+    return ( NULL != m_camera );
+}
+
+- ( BOOL ) attachCameraToCaptureSession
+{
+    // 0. Assume we've found the camera and set up the session first:
+    assert( NULL != m_camera );
+    assert( NULL != m_captureSession );
+
+    // 1. Initialize the camera input
+    m_cameraInput = NULL;
+
+    // 2. Request a camera input from the camera
+    NSError * error = NULL;
+    m_cameraInput = [ AVCaptureDeviceInput deviceInputWithDevice: m_camera error: &error ];
+
+    // 2.1. Check if we've got any errors
+    if ( NULL != error )
+    {
+        // TODO: send an error event to ActionScript
+        return false;
+    }
+
+    // 3. We've got the input from the camera, now attach it to the capture session:
+    if ( [ m_captureSession canAddInput: m_cameraInput ] )
+    {
+        [ m_captureSession addInput: m_cameraInput ];
+    }
+    else
+    {
+        // TODO: send an error event to ActionScript
+        return false;
+    }
+
+    // 4. Done, the attaching was successful, return true to signal that
+    return true;
+}
+
+- ( void ) setupVideoOutput
+{
+    // 1. Create the video data output
+    m_videoOutput = [ [ AVCaptureVideoDataOutput alloc ] init ];
+
+    // 2. Create a queue for capturing video frames
+    dispatch_queue_t captureQueue = dispatch_queue_create( "captureQueue", DISPATCH_QUEUE_SERIAL );
+
+    // 3. Use the AVCaptureVideoDataOutputSampleBufferDelegate capabilities of CameraDelegate:
+    [ m_videoOutput setSampleBufferDelegate: self queue: captureQueue ];
+
+    // 4. Set up the video output
+    // 4.1. Do we care about missing frames?
+    m_videoOutput.alwaysDiscardsLateVideoFrames = NO;
+
+    // 4.2. We want the frames in some RGB format, which is what ActionScript can deal with
+    NSNumber * framePixelFormat = [ NSNumber numberWithInt: kCVPixelFormatType_32BGRA ];
+    m_videoOutput.videoSettings = [ NSDictionary dictionaryWithObject: framePixelFormat
+                                                               forKey: ( id ) kCVPixelBufferPixelFormatTypeKey ];
+
+    // 5. Add the video data output to the capture session
+    [ m_captureSession addOutput: m_videoOutput ];
+}
+
+
+- ( BOOL ) startCamera: (AVCaptureDevicePosition) cameraPosition
+{
+    // 1. Find the back camera
+    if ( ![ self findCamera: cameraPosition ] )
+    {
+        return false;
+    }
+
+    //2. Make sure we have a capture session
+    if ( NULL == m_captureSession )
+    {
+        m_captureSession = [ [ AVCaptureSession alloc ] init ];
+    }
+
+    // 3. Choose a preset for the session.
+    // Optional TODO: You can parameterize this and set it in ActionScript.
+    //NSString * cameraResolutionPreset = AVCaptureSessionPreset640x480;
+    NSString * cameraResolutionPreset = AVCaptureSessionPreset1280x720;
+
+    // 4. Check if the preset is supported on the device by asking the capture session:
+    if ( ![ m_captureSession canSetSessionPreset: cameraResolutionPreset ] )
+    {
+        // Optional TODO: Send an error event to ActionScript
+        return false;
+    }
+
+    // 4.1. The preset is OK, now set up the capture session to use it
+    [ m_captureSession setSessionPreset: cameraResolutionPreset ];
+
+    // 5. Plug camera and capture sesiossion together
+    [ self attachCameraToCaptureSession ];
+
+    // 6. Add the video output
+    [ self setupVideoOutput ];
+
+    // 7. Set up a callback, so we are notified when the camera actually starts
+    [ [ NSNotificationCenter defaultCenter ] addObserver: self
+                                                selector: @selector( onVideoStart: )
+                                                    name: AVCaptureSessionDidStartRunningNotification
+                                                  object: m_captureSession ];
+
+    // 8. 3, 2, 1, 0... Start!
+    [ m_captureSession startRunning ];
+
+    // Note: Returning true from this function only means that setting up went OK.
+    // It doesn't mean that the camera has started yet.
+    // We get notified about the camera having started in the videoCameraStarted() callback.
+    return true;
+}
+
+
+
+- ( BOOL ) stopCamera
+{
+    BOOL isRunning = [m_captureSession isRunning];
+    if( isRunning )
+    {
+        [m_captureSession stopRunning ];
+    }
+    return isRunning;
+}
+
+@end
+
+
+// http://stackoverflow.com/a/32047525
+CMVideoDimensions _CameraPlatform_GetSize(AVCaptureDevicePosition cameraPosition)
+{
+    CMVideoDimensions max_resolution;
+    max_resolution.width = 0;
+    max_resolution.height = 0;
+
+    AVCaptureDevice* captureDevice = nil;
+
+    NSArray *devices = [AVCaptureDevice devicesWithMediaType:AVMediaTypeVideo];
+    for (AVCaptureDevice *device in devices) {
+        
+        /*
+        const char* position = "unspecified";
+        if( device.position == AVCaptureDevicePositionBack )
+            position = "back";
+        else if (device.position == AVCaptureDevicePositionFront )
+            position = "front";
+
+        NSString* localizedName = [NSString stringWithFormat:@"%@,  position: %s", device.localizedName, position];
+        NSLog(@"%@", localizedName);
+        */
+
+        if ([device position] == cameraPosition) {
+            captureDevice = device;
+            break;
+        }
+    }
+    if (captureDevice == nil) {
+        return max_resolution;
+    }
+
+    NSArray* availFormats=captureDevice.formats;
+
+    for (AVCaptureDeviceFormat* format in availFormats) {
+#if defined(DM_PLATFORM_IOS)
+        CMVideoDimensions resolution = format.highResolutionStillImageDimensions;
+#else
+        CMVideoDimensions resolution = CMVideoFormatDescriptionGetDimensions((CMVideoFormatDescriptionRef)[format formatDescription]);
+#endif
+        int w = resolution.width;
+        int h = resolution.height;
+        if ((w * h) > (max_resolution.width * max_resolution.height)) {
+            max_resolution.width = w;
+            max_resolution.height = h;
+        }
+    }
+
+	return max_resolution;
+}
+
+
+int CameraPlatform_StartCapture(dmBuffer::HBuffer* buffer, CameraType type, CameraInfo& outparams)
+{
+
+	if(g_Camera.m_Delegate == 0)
+	{
+		g_Camera.m_Delegate	= [[CameraCaptureDelegate alloc] init];
+	}
+
+    AVCaptureDevicePosition cameraposition = AVCaptureDevicePositionUnspecified;
+#if defined(DM_PLATFORM_IOS)
+    if( type == CAMERA_TYPE_BACK )
+        cameraposition = AVCaptureDevicePositionBack;
+    else if( type == CAMERA_TYPE_FRONT )
+        cameraposition = AVCaptureDevicePositionFront;
+#endif
+	CMVideoDimensions dimensions = _CameraPlatform_GetSize(cameraposition);
+
+	g_Camera.m_Delegate->m_Size = dimensions;
+
+    outparams.m_Width = (uint32_t)dimensions.width;
+    outparams.m_Height = (uint32_t)dimensions.height;
+
+    uint32_t size = outparams.m_Width * outparams.m_Width;
+    dmBuffer::StreamDeclaration streams_decl[] = {
+        {dmHashString64("data"), dmBuffer::VALUE_TYPE_UINT8, 3}
+    };
+
+    dmBuffer::Allocate(size, streams_decl, 1, buffer);
+
+	g_Camera.m_VideoBuffer = *buffer;
+
+	BOOL started = [g_Camera.m_Delegate startCamera: cameraposition];
+
+    return started ? 1 : 0;
+}
+
+int CameraPlatform_StopCapture()
+{
+	if(g_Camera.m_Delegate != 0)
+	{
+        [g_Camera.m_Delegate stopCamera];
+    	[g_Camera.m_Delegate release];
+	}
+	return 1;
+}
+
+#endif // DM_PLATFORM_IOS

camera/src/camera_private.h

@@ -0,0 +1,20 @@
+#pragma once
+
+#include <dmsdk/sdk.h>
+
+enum CameraType
+{
+	CAMERA_TYPE_FRONT, // Selfie
+	CAMERA_TYPE_BACK
+};
+
+struct CameraInfo
+{
+	uint32_t   m_Width;
+	uint32_t   m_Height;
+    CameraType m_Type;
+};
+
+extern int CameraPlatform_StartCapture(dmBuffer::HBuffer* buffer, CameraType type, CameraInfo& outparams);
+extern int CameraPlatform_StopCapture();
+

game.project

@@ -1,5 +1,5 @@
 [project]
-title = My project
+title = Camera
 version = 0.1
 
 [bootstrap]
@@ -9,8 +9,8 @@ main_collection = /main/main.collectionc
 game_binding = /input/game.input_bindingc
 
 [display]
-width = 1280
+width = 600
-height = 720
+height = 800
 
 [physics]
 scale = 0.02
@@ -18,3 +18,12 @@ scale = 0.02
 [script]
 shared_state = 1
 
+[ios]
+bundle_identifier = com.defold.camera
+
+[android]
+package = com.defold.camera
+
+[osx]
+bundle_identifier = com.defold.camera
+

main/camera.atlas

@@ -0,0 +1,6 @@
+images {
+  image: "/main/images/logo.png"
+}
+margin: 0
+extrude_borders: 0
+inner_padding: 0

main/main.collection

@@ -1,5 +1,60 @@
 name: "main"
 scale_along_z: 0
+embedded_instances {
+  id: "camera"
+  data: "components {\n"
+  "  id: \"script\"\n"
+  "  component: \"/main/main.script\"\n"
+  "  position {\n"
+  "    x: 0.0\n"
+  "    y: 0.0\n"
+  "    z: 0.0\n"
+  "  }\n"
+  "  rotation {\n"
+  "    x: 0.0\n"
+  "    y: 0.0\n"
+  "    z: 0.0\n"
+  "    w: 1.0\n"
+  "  }\n"
+  "}\n"
+  "embedded_components {\n"
+  "  id: \"sprite\"\n"
+  "  type: \"sprite\"\n"
+  "  data: \"tile_set: \\\"/main/camera.atlas\\\"\\n"
+  "default_animation: \\\"logo\\\"\\n"
+  "material: \\\"/builtins/materials/sprite.material\\\"\\n"
+  "blend_mode: BLEND_MODE_ALPHA\\n"
+  "\"\n"
+  "  position {\n"
+  "    x: 0.0\n"
+  "    y: 0.0\n"
+  "    z: 0.0\n"
+  "  }\n"
+  "  rotation {\n"
+  "    x: 0.0\n"
+  "    y: 0.0\n"
+  "    z: 0.0\n"
+  "    w: 1.0\n"
+  "  }\n"
+  "}\n"
+  ""
+  position {
+    x: 300.0
+    y: 400.0
+    z: 0.5
+  }
+  rotation {
+    x: 0.0
+    y: 0.0
+    z: 0.0
+    w: 1.0
+  }
+  scale3 {
+    x: 1.0
+    y: 1.0
+    z: 1.0
+  }
+}
 embedded_instances {
   id: "logo"
   data: "embedded_components {\n"
@@ -24,9 +79,9 @@ embedded_instances {
   "}\n"
   ""
   position {
-    x: 640.0
+    x: 95.39966
-    y: 340.0
+    y: 89.54209
-    z: 0.0
+    z: 1.0
   }
   rotation {
     x: 0.0

main/main.script

@@ -0,0 +1,39 @@
+
+function init(self)
+    local logosize = 128
+    local screen_width = sys.get_config("display.width", 600)
+    local screen_height = sys.get_config("display.height", 800)
+    local scale_width = screen_width / logosize
+    local scale_height = screen_height / logosize
+    
+    go.set("#sprite", "scale", vmath.vector3(scale_width, scale_height, 1) )
+    
+    if camera ~= nil and camera.start_capture(camera.CAMERA_TYPE_FRONT) then
+        self.cameraframe = camera.get_frame()
+        self.camerainfo = camera.get_info()
+        
+        self.cameratextureheader = {width=self.camerainfo.width,
+                                    height=self.camerainfo.height,
+                                    type=resource.TEXTURE_TYPE_2D,
+                                    format=resource.TEXTURE_FORMAT_RGB,
+                                    num_mip_maps=1 }
+    else
+        print("could not start camera capture")
+    end
+end
+
+function final(self)
+    if self.cameraframe ~= nil then
+        camera.stop_capture()
+    end
+end
+
+
+function update(self, dt)
+    if self.cameraframe then
+        local pathmodelcamera = go.get("#sprite", "texture0")
+        resource.set_texture(pathmodelcamera, self.cameratextureheader, self.cameraframe)
+    end
+    
+    
+end