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  • Windows XP doesn't recognize iPhone as a camera

    - by ines
    My iPhone 3GS doesn´t show up in the Scanners and Cameras tool when I connect it via USB to Windows XP. Nor does the Camera Wizard pop up. How do I make Windows XP detect the device as a Camera? I currently have no way of downloading photos from the iPhone to my computer. iTunes does recognize the device, but it doesn't offer a way to synchronize photos. Thanks for your help.

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  • "Could not claim interface on camera: -6" when trying to connect usb camera (Kinect)

    - by rzetterberg
    I have installed the freenect library from openkinect.org. With that library there is a demo application which you can run from the terminal to test out the Kinect. However when I run this command I get the following output: richard@behemoth:~$ sudo freenect-glview Kinect camera test Number of devices found: 1 Could not claim interface on camera: -6 Could not open device This particular error is thrown by the library libusb by the function libusb_claim_interface and the error -6 corresponds to the LIBUSB_ERROR_BUSY. So my guess is that it has something to do with mounting the usb, rather than specifically the freenect library or the Kinect itself. So my question is how can I find out what resource is using this interface and how can I free it so that I can access it? Edit: What I have tried so far (just to be sure): Rebooted Plugged-out, plugged-in Tried different usb ports Restarted udev Additional information that might be useful: /etc/fstab: # /etc/fstab: static file system information. # # Use 'blkid -o value -s UUID' to print the universally unique identifier # for a device; this may be used with UUID= as a more robust way to name # devices that works even if disks are added and removed. See fstab(5). # # <file system> <mount point> <type> <options> <dump> <pass> proc /proc proc nodev,noexec,nosuid 0 0 # / was on /dev/sda1 during installation UUID=1c73f217-ac8d-451b-8390-7a680628a856 / ext4 errors=remount-ro 0 1 # swap was on /dev/sda5 during installation UUID=bb49bd29-07ec-45a0-bbab-46fb8362b06b none swap sw 0 0 sudo uname -r: Linux behemoth 3.0.0-14-generic-pae #23-Ubuntu SMP Mon Nov 21 22:07:10 UTC 2011 i686 i686 i386 GNU/Linux cat /etc/lsb-release DISTRIB_ID=Ubuntu DISTRIB_RELEASE=11.10 DISTRIB_CODENAME=oneiric DISTRIB_DESCRIPTION="Ubuntu 11.10"

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  • How do I have to take into account the direction in which the camera is facing when creating a first person strafe (left/right) movement

    - by Chris
    This is the code I am currently using, and it works great, except for the strafe always causes the camera to move along the X axis which is not relative to the direction in which the camera is actually facing. As you can see currently only the x location is updated: [delta * -1, 0, 0] How should I take into account the direction in which the camera is facing (I have the camera's target x,y,z) when creating a first person strafe (left/right) movement? case 'a': var eyeOriginal = g_eye; var targetOriginal = g_target; var viewEye = g_math.subVector(g_eye, g_target); var viewTarget = g_math.subVector(g_target, g_eye); viewEye = g_math.addVector([delta * -1, 0, 0], viewEye); viewTarget = g_math.addVector([delta * -1, 0, 0], viewTarget); g_eye = g_math.addVector(viewEye, targetOriginal); g_target = g_math.addVector(viewTarget, eyeOriginal); break; case 'd': var eyeOriginal = g_eye; var targetOriginal = g_target; var viewEye = g_math.subVector(g_eye, g_target); var viewTarget = g_math.subVector(g_target, g_eye); viewEye = g_math.addVector([delta, 0, 0], viewEye); viewTarget = g_math.addVector([delta, 0, 0], viewTarget); g_eye = g_math.addVector(viewEye, targetOriginal); g_target = g_math.addVector(viewTarget, eyeOriginal); break;

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  • Copying photos from camera stalls - how to track down issue?

    - by Hamish Downer
    When I copy files from my camera (connected via USB) to the SSD in my laptop a few files get copied and then the copy stalls. I'm not sure why, any ideas or things to investigate appreciated, or bug reports to go and look at. I have read this answer - the camera (Canon 40D in case that matters) mounts fine using gvfs. I can see the photos in Nautilus, or in the terminal (in /run/user/username/gvfs/... ) and I can copy a few photos, but not many. Using the terminal or Nautilus the process hangs until the camera goes to sleep. Digikam fails to copy any at all, as does Rapid Photo Downloader. Shotwell did manage it in the end, but that is very much a work around for me. I have disabled thumbnail generation by nautilus. Load average stays about 1 while this is happening, while CPU usage is half idle, half wait (and a little user/sys for other programs). None of the programs at the top of the cpu list in top are related to copying photos. There is not much in the logs - from /var/log/syslog Dec 2 16:20:52 mishtop dbus[945]: [system] Activating service name='org.freedesktop.UDisks' (using servicehelper) Dec 2 16:20:52 mishtop dbus[945]: [system] Successfully activated service 'org.freedesktop.UDisks' Dec 2 16:21:24 mishtop kernel: [ 2297.180130] usb 2-2: new high-speed USB device number 4 using ehci_hcd Dec 2 16:21:24 mishtop kernel: [ 2297.314272] usb 2-2: New USB device found, idVendor=04a9, idProduct=3146 Dec 2 16:21:24 mishtop kernel: [ 2297.314278] usb 2-2: New USB device strings: Mfr=1, Product=2, SerialNumber=0 Dec 2 16:21:24 mishtop kernel: [ 2297.314283] usb 2-2: Product: Canon Digital Camera Dec 2 16:21:24 mishtop kernel: [ 2297.314287] usb 2-2: Manufacturer: Canon Inc. Dec 2 16:21:24 mishtop mtp-probe: checking bus 2, device 4: "/sys/devices/pci0000:00/0000:00:1d.7/usb2/2-2" Dec 2 16:21:24 mishtop mtp-probe: bus: 2, device: 4 was not an MTP device This problem has only started recently and I've had all the hardware for ages. I have also recently upgraded to 12.10, though I'm not sure if the problem started when I upgraded or after the upgrade. I also note this similar question but it is currently unanswered and I'm providing more detail

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  • Software for handling camera RAW-files

    - by Eikern
    I use a digital SLR as most other photographers do today and have quickly realised that capturing images using camera-RAW files is the way to go. Personally I use Adobe Lightroom to handle my photo library, but I know there are other software available like Apple Aperture. These applications are quite hard to use for a novice, and are quite expensive too. I've often recommended other photographers to switch to camera-raw, but they won't do it because Windows can't handle it natively. Are there any free or cheaper applications out there that can do simple file handling and adjustments? Preferably so simple that my mom can do it. I know Nikon offers a codec that allows you to view NEF-files natively inside Windows, but still limits the uses of the file and slows the system down if the file is big. Does anybody know of a drag-and-drop application that converts camera-raw to JPG on-the-fly? In case I or someone would need to upload an image to the web or use it inside a word-document. Thanks.

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  • Remotely viewing IP camera on Belkin N450 DB router

    - by Mike Miller
    I need to setup a wireless IP camera (Trendnet TV-IP501W) on my network so that it is remotely visible from anywhere. Right now I successfully connected it to my home network but nothing else. My router is a Belkin N450 DB. Any help would be much appreciated, including what this would be referred to as so I could more easily ask another forum. I believe it is something like "port forwarding" but I'm not sure. Ok, I believe I found this in the "virtual servers" section. It asks for enabling with a check box, description, inbound port, type, private IP, & private port. In that order I have checked enabling, "camera", 150, TCP, 81, and 81? I'm assuming inbound ports are the numbers I use for the home network - xxx.xxx.x.150 and the 81 was for private. I used my WAN IP and added :81 and .81 but didn't get it. What am I doing wrong? Ok, I believe I found this in the "virtual servers" section. It asks for enabling with a check box, description, inbound port, type, private IP, & private port. In that order I have checked enabling, "camera", 150, TCP, 81, and 81? I'm assuming inbound ports are the numbers I use for the home network - xxx.xxx.x.150 and the 81 was for private. I used my WAN IP and added :81 and .81 but didn't get it. What am I doing wrong?

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  • How to draw an overlay on a SurfaceView used by Camera on Android?

    - by Cristian Castiblanco
    I have a simple program that draws the preview of the Camera into a SurfaceView. What I'm trying to do is using the onPreviewFrame method, which is invoked each time a new frame is drawn into the SurfaceView, in order to execute the invalidate method which is supposed to invoke the onDraw method. In fact, the onDraw method is being invoked, but nothing there is being printed (I guess the camera preview is overwriting the text I'm trying to draw). This is a simplify version of the SurfaceView subclass I have: public class Superficie extends SurfaceView implements SurfaceHolder.Callback { SurfaceHolder mHolder; public Camera camera; Superficie(Context context) { super(context); mHolder = getHolder(); mHolder.addCallback(this); mHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS); } public void surfaceCreated(final SurfaceHolder holder) { camera = Camera.open(); try { camera.setPreviewDisplay(holder); camera.setPreviewCallback(new PreviewCallback() { public void onPreviewFrame(byte[] data, Camera arg1) { invalidar(); } }); } catch (IOException e) {} } public void invalidar(){ invalidate(); } public void surfaceChanged(SurfaceHolder holder, int format, int w, int h) { Camera.Parameters parameters = camera.getParameters(); parameters.setPreviewSize(w, h); camera.setParameters(parameters); camera.startPreview(); } @Override public void draw(Canvas canvas) { super.draw(canvas); // nothing gets drawn :( Paint p = new Paint(Color.RED); canvas.drawText("PREVIEW", canvas.getWidth() / 2, canvas.getHeight() / 2, p); } }

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  • Android: Unregister camera button

    - by niko
    Hi, I tried to bind some actions to a camera button: videoPreview.setOnKeyListener(new OnKeyListener(){ public boolean onKey(View v, int keyCode, KeyEvent event){ if(event.getAction() == KeyEvent.ACTION_DOWN) { switch(keyCode) { case KeyEvent.KEYCODE_CAMERA: //videoPreview.onCapture(settings); onCaptureButton(); ... } } return false; } }); Pressing the button however the application crashes because the original Camera application starts. Does anyone know how to prevent Camera application start when the camera button is pressed?

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  • Detecting iPhone camera orientation

    - by Stephen Petschulat
    I'm getting inconsistent results depending on whether I get the image directly from the camera in the callback or choosing it from the camera roll. In the UIImagePickerControllerDelegate callback method, the UIImage.imageOrientation comes up as UIImageOrientationRight no matter how the photo is taken. When reading it off the Camera Roll, a landscape shot (turned left) comes up UIImageOrientationUp while a portrait shot comes up UIImageOrientationRight. How can I reliably get the camera orientation in both situations?

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  • Texturing Issue when Overlaying images onto Camera preview SurfaceView

    - by Dervis Suleyman
    I am in the process of making an augmented reality application and I have successfully overlaid a 3d cube over a camera surface view. The Issue now is when I add a Texture the cube then flickers(with the texture on it) and disappears leaving the camera preview upon further research i discovered that the cube with the texture was disappearing behind the Camera preview. My Question is has anyone else had this issue and if yes what approach did you take to solve this. Heres another strange Issue when i take a print screen the cube is on-top of the camera Preview

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  • Does Windows actually verify digital signatures in the Properties dialog?

    - by Digital
    When downloading executables from the Internet, I always check to see if they are digitally signed before I feel safe running them. In Windows, when right-clicking a digitally-signed file and selecting Properties, a digital signature tab will be present in the Properties dialog. What I'd like to know is: does Windows actually verify the digital signature when it is shown in the Properties dialog, or does it merely indicate that the file contains a digital signature that may or may not be valid?

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  • Create a Social Community of Trust Along With Your Federal Digital Services Governance

    - by TedMcLaughlan
    The Digital Services Governance Recommendations were recently released, supporting the US Federal Government's Digital Government Strategy Milestone Action #4.2 to establish agency-wide governance structures for developing and delivering digital services. Figure 1 - From: "Digital Services Governance Recommendations" While extremely important from a policy and procedure perspective within an Agency's information management and communications enterprise, these recommendations only very lightly reference perhaps the most important success enabler - the "Trusted Community" required for ultimate usefulness of the services delivered. By "ultimate usefulness", I mean the collection of public, transparent properties around government information and digital services that include social trust and validation, social reach, expert respect, and comparative, standard measures of relative value. In other words, do the digital services meet expectations of the public, social media ecosystem (people AND machines)? A rigid governance framework, controlling by rules, policies and roles the creation and dissemination of digital services may meet the expectations of direct end-users and most stakeholders - including the agency information stewards and security officers. All others who may share comments about the services, write about them, swap or review extracts, repackage, visualize or otherwise repurpose the output for use in entirely unanticipated, social ways - these "stakeholders" will not be governed, but may observe guidance generated by a "Trusted Community". As recognized members of the trusted community, these stakeholders may ultimately define the right scope and detail of governance that all other users might observe, promoting and refining the usefulness of the government product as the social ecosystem expects. So, as part of an agency-centric governance framework, it's advised that a flexible governance model be created for stewarding a "Community of Trust" around the digital services. The first steps follow the approach outlined in the Recommendations: Step 1: Gather a Core Team In addition to the roles and responsibilities described, perhaps a set of characteristics and responsibilities can be developed for the "Trusted Community Steward/Advocate" - i.e. a person or team who (a) are entirely cognizant of and respected within the external social media communities, and (b) are trusted both within the agency and outside as practical, responsible, non-partisan communicators of useful information. The may seem like a standard Agency PR/Outreach team role - but often an agency or stakeholder subject matter expert with a public, active social persona works even better. Step 2: Assess What You Have In addition to existing, agency or stakeholder decision-making bodies and assets, it's important to take a PR/Marketing view of the social ecosystem. How visible are the services across the social channels utilized by current or desired constituents of your agency? What's the online reputation of your agency and perhaps the service(s)? Is Search Engine Optimization (SEO) a facet of external communications/publishing lifecycles? Who are the public champions, instigators, value-adders for the digital services, or perhaps just influential "communicators" (i.e. with no stake in the game)? You're essentially assessing your market and social presence, and identifying the actors (including your own agency employees) in the existing community of trust. Step 3: Determine What You Want The evolving Community of Trust will most readily absorb, support and provide feedback regarding "Core Principles" (Element B of the "six essential elements of a digital services governance structure") shared by your Agency, and obviously play a large, though probably very unstructured part in Element D "Stakeholder Input and Participation". Plan for this, and seek input from the social media community with respect to performance metrics - these should be geared around the outcome and growth of the trusted communities actions. How big and active is this community? What's the influential reach of this community with respect to particular messaging or campaigns generated by the Agency? What's the referral rate TO your digital services, FROM channels owned or operated by members of this community? (this requires governance with respect to content generation inclusive of "markers" or "tags"). At this point, while your Agency proceeds with steps 4 ("Build/Validate the Governance Structure") and 5 ("Share, Review, Upgrade"), the Community of Trust might as well just get going, and start adding value and usefulness to the existing conversations, existing data services - loosely though directionally-stewarded by your trusted advocate(s). Why is this an "Enterprise Architecture" topic? Because it's increasingly apparent that a Public Service "Enterprise" is not wholly contained within Agency facilities, firewalls and job titles - it's also manifested in actual, perceived or representative forms outside the walls, on the social Internet. An Agency's EA model and resulting investments both facilitate and are impacted by the "Social Enterprise". At Oracle, we're very active both within our Enterprise and outside, helping foster social architectures that enable truly useful public services, digital or otherwise.

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  • Handling cameras in a large scale game engine

    - by Hannesh
    What is the correct, or most elegant, way to manage cameras in large game engines? Or should I ask, how does everybody else do it? The methods I can think of are: Binding cameras straight to the engine; if someone needs to render something, they bind their own camera to the graphics engine which is in use until another camera is bound. A camera stack; a small task can push its own camera onto the stack, and pop it off at the end to return to the "main" camera. Attaching a camera to a shader; Every shader has exactly one camera bound to it, and when the shader is used, that camera is set by the engine when the shader is in use. This allows me to implement a bunch of optimizations on the engine side. Are there other ways to do it?

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  • Streaming video from a point-and-shoot camera that doesn't support it

    - by egasimus
    I have a Canon IXUS 120is (PowerShot SD940) - a nice digital camera that's a couple of years old. It does record fairly decent video, but, alas, can't function as a webcam - and I need to stream video over the Web. I've installed CHDK on it, and while it's quite flexible, doesn't seem to provide a solution to my problem. I suppose that the video footage is written to the SD card in real time - is there a hack that allows me to monitor the file as it is written, and broadcast its contents over the Internet? Perhaps connecting its the camera's slot to my laptop's card reader via SDIO? I'm running Windows, but I'm roughly familiar with Linux; another question has suggested a file-to-/dev/video driver - do such tools exist?

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  • translation/rotation of a HUD against a camera using vectors in Euclidian 3D space

    - by Jakob
    i've got 2 points in 3D space: the camera position and the camera lookAt. the camera movement is restricted akin to typical first person shooter games. you can move the cam freely, tilt horizontally and up to 90 degrees vertically, but not roll. so now i want to draw a HUD to the screen, on which i can move the mouse freely, with the position of the cursor correctly translating into 3D space. the easy part was to draw something directly in front of the camera. V0 = camPos; V1 = lookAt; V2 = lookAt-camPos; normalize V2; mutiply V2 according to camera frustum V3 = V0+V2 draw something at V3 now the part i don't get: i could use V3 and add to that the rotations of the cam combined with the x/y of the mouse cursor, somehow, right? that's what i want.

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  • Transferring videos from Sony Video Camera to PC via USB connection

    - by Mehper C. Palavuzlar
    I have a Sony video camera (DCR-TRV340e) and loads of video tapes that I like to transfer to my PC. The camera has USB connection and I've loaded its driver with no problems. Which video software do you recommend me to use? I want to have my videos in XviD format with maximum 1 GB for a 1 hour film. How much time does it take to do that for a 1 hour film? Should I use USB connection or another type of connection? Detailed information about connection and software settings would be highly appreciated.

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  • Ray intersection and child camera

    - by lutangar
    I've been playing with three.js for few weeks now and got few inconsistencies on ray casting. Here is a simplified version demonstrating one of the bug I encoutered : http://jsfiddle.net/eMrhb/12/ The camera is added to the sphere mesh for further use of TrackBallControl for example. scene.add(mesh); mesh.add(camera); Clicking a few times on the sphere and opening the console, show us none of the expected intersections between the ray and the mesh. Adding the camera to the scene (http://jsfiddle.net/eMrhb/9/), solves the problem: scene.add(mesh); scene.add(camera); But I could use a much more complex hierarchy between my scene objects and the camera to suit my needs. Is this a limitation? If it is, is there any workarounds I could use?

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  • Raid-1 Western Digital Green AARS, cloning and WD Align Utility

    - by Jaguar
    Hello all, My current setup runs on top of 2x Western Digital 2500KS drives on Raid-1, using the motherboard's 780G raid controller, on WinXP. Everything is fine, but the drives are a bit noisy. I am considering buying 2x WD6400AARS disks which are the 640GB slower 'green' drives, but also feature the Advanced Formatting 4KB sectors. This means that for WinXP the partition will have to be aligned to work properly, else there is a performance penalty. There are 2 questions here: The Green drives from WD are all slower and are (according to WD) susceptible to drop-out's from the controller. Has anyone any experience in this matter? Is there a possibility the controller will drop a drive? If so, can i do anything about it? Secondly, western digital gives a utility to perform the alignment on the partition. The thing is, will the utility see the drives in question as the operating system only sees 1 logical disk? I will be making the transition using a cloning tool (most probably norton ghost) unless i don't find a solution or a clear answer, in which case i'll just buy a win 7 license and make a clean install... thx in advance

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  • compile ICS/JB camera application - native library jni-mosaic error

    - by liorry
    I would like to use the Panorama mode that the ICS/JB camera application has. I've downloaded the source code (with resources) and managed to solve all code compilation errors but as soon as I start the application on my device (running JB), I get this error: 10-25 14:42:53.617: E/AndroidRuntime(23147): FATAL EXCEPTION: GLThread 2586 10-25 14:42:53.617: E/AndroidRuntime(23147): java.lang.UnsatisfiedLinkError: Native method not found: com.app.camera.panorama.MosaicRenderer.reset:(IIZ)V 10-25 14:42:53.617: E/AndroidRuntime(23147): at com.app.camera.panorama.MosaicRenderer.reset(Native Method) 10-25 14:42:53.617: E/AndroidRuntime(23147): at com.app.camera.panorama.MosaicRendererSurfaceViewRenderer.onSurfaceChanged(MosaicRendererSurfaceViewRenderer.java:49) 10-25 14:42:53.617: E/AndroidRuntime(23147): at android.opengl.GLSurfaceView$GLThread.guardedRun(GLSurfaceView.java:1505) 10-25 14:42:53.617: E/AndroidRuntime(23147): at android.opengl.GLSurfaceView$GLThread.run(GLSurfaceView.java:1240) I do have a libjni-mosaic lib, located in armeabi-v7a/armeabi/x86 and it seems to load it fine but it probably doesn't contain the methods the MosaicRenderer implements. I also tried compiling the CyanogenMod camera app https://github.com/CyanogenMod/android_packages_apps_Camera/tree/ics but I get the same error... The camera itself works, for stills and video recording but as soon as I change to panorama mode, it crashes. Can anyone maybe point me to the right jni-mosaic lib or maybe to what I'm doing wrong? Do I need to do something in order to make my app use the JNI/SO files?

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  • Galaxy Nexus (Specificaly) camera startPreview failed

    - by Roman
    I'm having a strange issue on a galaxy nexus when trying to have a live camera view in my app. I get this error in the log cat: 06-29 16:31:26.681 I/CameraClient(133): Opening camera 0 06-29 16:31:26.681 I/CameraHAL(133): camera_device open 06-29 16:31:26.970 D/DOMX (133): ERROR: failed check:(eError == OMX_ErrorNone) || (eError == OMX_ErrorNoMore) - returning error: 0x80001005 - Error returned from OMX API in ducati 06-29 16:31:26.970 E/CameraHAL(133): Error while configuring rotation 0x80001005 06-29 16:31:27.088 I/am_on_resume_called(21274): [0,digifynotes.Activity_Camera] 06-29 16:31:27.111 V/PhoneStatusBar(693): setLightsOn(true) 06-29 16:31:27.205 E/CameraHAL(133): OMX component is not in loaded state 06-29 16:31:27.205 E/CameraHAL(133): setNSF() failed -22 06-29 16:31:27.205 E/CameraHAL(133): Error: CAMERA_QUERY_RESOLUTION_PREVIEW -22 06-29 16:31:27.252 I/MonoDroid(21274): UNHANDLED EXCEPTION: Java.Lang.Exception: Exception of type 'Java.Lang.Exception' was thrown. 06-29 16:31:27.252 I/MonoDroid(21274): at Android.Runtime.JNIEnv.CallVoidMethod (intptr,intptr) <0x00068> 06-29 16:31:27.252 I/MonoDroid(21274): at Android.Hardware.Camera.StartPreview () <0x0007f> 06-29 16:31:27.252 I/MonoDroid(21274): at DigifyNotes.CameraPreviewView.SurfaceChanged (Android.Views.ISurfaceHolder,Android.Graphics.Format,int,int) <0x000d7> 06-29 16:31:27.252 I/MonoDroid(21274): at Android.Views.ISurfaceHolderCallbackInvoker.n_SurfaceChanged_Landroid_view_SurfaceHolder_III (intptr,intptr,intptr,int,int,int) <0x0008b> 06-29 16:31:27.252 I/MonoDroid(21274): at (wrapper dynamic-method) object.4c65d912-497c-4a67-9046-4b33a55403df (intptr,intptr,intptr,int,int,int) <0x0006b> That very same source code works flawlessly on a Samsung Galaxy Ace 2X (4.0.4) and an LG G2X (2.3.7). I will later test on a galaxy s4 if my friend lends it to me. Galaxy Nexus runs Android 4.2.2 I believe. Any one have any ideas? EDIT: Here are my camera classes: [Please note I am using mono] [The formatting is more readable if you view it as raw] Camera Activity: http://pastebin.com/YPcGXJRB Camera Preview View: http://pastebin.com/zNf8AWDf

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  • Remove a Digital Camera’s IR Filter for IR Photography on the Cheap

    - by Jason Fitzpatrick
    Whether you have a DSLR or a point-and-shoot, this simple hack allows you to shoot awesome IR photographs without the expense of a high-quality IR filter (or the accompanying loss of light that comes with using it). How does it work? You’ll need to take apart your camera and remove a single fragile layer of IR blocking glass from the CCD inside the camera body. After doing so, you’ll have a camera that sees infrared light by default, no special add-on filters necessary. Because it sees the IR light without the filters you’ll also skip out on the light loss that occurs with the addition of the add-on IR filter. The downside? You’re altering the camera in permanent and warranty-voiding way. This is most definitely not a hack for your brand new $2,000 DSLR, but it is a really fun hack to try out on an old point and shoot camera or your circa-2004 depreciated DSLR. Hit up the link below to see the process performed on an old Canon point and shoot–we’d strongly recommend searching for a break down guide for your specific camera model before attempting the trick on your own gear. Are You Brave Enough to IR-ize Your Camera [DIY Photography] HTG Explains: How Windows Uses The Task Scheduler for System Tasks HTG Explains: Why Do Hard Drives Show the Wrong Capacity in Windows? Java is Insecure and Awful, It’s Time to Disable It, and Here’s How

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  • SurfaceView for Camera Preview won't get destroyed when pressing Power-Botton

    - by for3st
    I want to implement a camera preview. For that I have a custom View CameraView extends ViewGroup that in the constructor programatically creates an surfaceView. I have the following components (higly simplified for beverity): ScannerFragment.java public View onCreateView(..) { //inflate view and get cameraView } public void onResume() { //open camera -> set rotation -> startPreview (in a thread) -> //set preview callback -> start decoding worker } public void onPause() { // stop decoding worker -> stop Preview -> release camera } CameraView.java extends ViewGroup public void setUpCalledInConstructor(Context context) { //create a surfaceview and add it to this viewgroup -> //get SurfaceHolder and set callback } /* SurfaceHolder.Callback */ public void surfaceCreated(SurfaceHolder holder) { camera.setPreviewDisplay(holder); } public void surfaceDestroyed(SurfaceHolder holder) { //NOTHING is done here } public void surfaceChanged(SurfaceHolder holder, int format, int w, int h) { camera.getParameters().setPreviewSize(previewSize.width, previewSize.height); } fragment_scanner.xml <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent"> <com.myapp.camera.CameraView android:id="@+id/cameraPreview" android:layout_width="match_parent" android:layout_height="match_parent"/> </RelativeLayout> I think I have set the lifecycle correct (getting resources onResume(), releasing it onPause() roughly said) and the following works just fine: pressing home and returning pressing Taskswitcher and returning rotation But one thing doesn't work and that is when I press the power-button on the device and then return to the camera-preview. The result is: the preview is stuck with the image that was last captured before button was pressed. If I rotate it works fine again, since it will get through the lifecycle. After some research I found out that this is probably due to the fact that surfaceView won't get destroyed when the power-button is pressed, i.e. SurfaceHolder.Callback.surfaceDestroyed(SurfaceHolder holder) won't be called. And in fact when I compare the (very verbose) log output of the home-button-case and the power-button-case it's the same except that 'surfaceDestroyed' won't get called. So far I found no solution whatsoever to work around it. I purposely avoid any resource cleaning code in my surfaceDestroyed(), but this does not help. My idea was to manually destroy the surfaceView like asked in this question but this seems not possible. I also tested other applications with surfaceViews/cameras and they don't seem to have this issue. So I would appreciate any hints or tips on that.

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  • Issue getting camera emulation to work with Tom G's HttpCamera

    - by user591524
    I am trying to use the android emulator to preview video from webcam. I have used the tom gibara sample code, minus the webbroadcaster (i am instead using VLC streaming via http). So, I have modified the SDK's "CameraPreview" app to use the HttpCamera, but the stream never appears. Debugging through doesn't give me any clues either. I wonder if anything obvious is clear to others? The preview app launches and remains black. Notes: 1) I have updated the original CameraPreview class as described here: http://www.inter-fuser.com/2009/09/live-camera-preview-in-android-emulator.html, but referencing httpCamera instead of socketcamera. 2) I updated Tom's original example to reference "Camera" type instead of deprecated "CameraDevice" type. 3) Below is my CameraPreview.java. 4) THANK YOU package com.example.android.apis.graphics; import android.app.Activity; import android.content.Context; import android.hardware.Camera; import android.os.Bundle; import android.view.SurfaceHolder; import android.view.SurfaceView; import android.view.Window; import java.io.IOException; import android.graphics.Canvas; // ---------------------------------------------------------------------- public class CameraPreview extends Activity { private Preview mPreview; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); // Hide the window title. requestWindowFeature(Window.FEATURE_NO_TITLE); // Create our Preview view and set it as the content of our activity. mPreview = new Preview(this); setContentView(mPreview); } } // ---------------------------------------------------------------------- class Preview extends SurfaceView implements SurfaceHolder.Callback { SurfaceHolder mHolder; //Camera mCamera; HttpCamera mCamera;//changed Preview(Context context) { super(context); // Install a SurfaceHolder.Callback so we get notified when the // underlying surface is created and destroyed. mHolder = getHolder(); mHolder.addCallback(this); //mHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS); mHolder.setType(SurfaceHolder.SURFACE_TYPE_NORMAL);//changed } public void surfaceCreated(SurfaceHolder holder) { // The Surface has been created, acquire the camera and tell it where // to draw. //mCamera = Camera.open(); this.StartCameraPreview(holder); } public void surfaceDestroyed(SurfaceHolder holder) { // Surface will be destroyed when we return, so stop the preview. // Because the CameraDevice object is not a shared resource, it's very // important to release it when the activity is paused. //mCamera.stopPreview();//changed mCamera = null; } public void surfaceChanged(SurfaceHolder holder, int format, int w, int h) { // Now that the size is known, set up the camera parameters and begin // the preview. //Camera.Parameters parameters = mCamera.getParameters(); //parameters.setPreviewSize(w, h); //mCamera.setParameters(parameters); //mCamera.startPreview(); this.StartCameraPreview(holder); } private void StartCameraPreview(SurfaceHolder sh) { mCamera = new HttpCamera("10.213.74.247:443", 640, 480, true);//changed try { //mCamera.setPreviewDisplay(holder); Canvas c = sh.lockCanvas(null); mCamera.capture(c); sh.unlockCanvasAndPost(c); } catch (Exception exception) { //mCamera.release(); mCamera = null; // TODO: add more exception handling logic here } } }

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