Monday, 21 September 2009

Live camera preview in the Android emulator

I've been looking into getting a live camera preview working in the Android emulator. Currently the Android emulator just gives a black and white chess board animation. After having a look around I found the web site of Tom Gibara who has done some great work to get a live preview working in the emulator. The link to his work can be found here. The basics are that you run the WebcamBroadcaster as a standard java app on your PC. If there are any video devices attached to you PC, it will pick them up and broadcast the frames captured over a socket connection. You then run a SocketCamera class as part of an app in the android emulator, and as long as you have the correct ip address and port it should display the captured images in the emulator. On looking into Tom's code I saw that it seemed to be written for an older version of the Android API so I thought I'd have a go at updating it. As a starting point I'm going to use the
CameraPreview sample code available on the android developers website. My aim was to take this code and with as little changes as possible make it so it could be used to give a live camera preview in the emulator.

So the first thing I did was to create a new class called SocketCamera, this is based on Tom's version of the SocketCamera, but unlike Tom's version I am trying to implement a subset of the new camera class android.hardware.Camera and not the older class android.hardware.CameraDevice. Please keep in mind that I've implemented just a subset of the Camera class API. The code was put together fairly quickly and is a bit rough round the edges. Anyhow, here's my new SocketCamera class:


package com.example.socketcamera;

import java.io.IOException;
import java.io.InputStream;
import java.net.InetSocketAddress;
import java.net.Socket;

import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.Rect;
import android.hardware.Camera;
import android.hardware.Camera.Size;
import android.util.Log;
import android.view.SurfaceHolder;

public class SocketCamera {

private static final String LOG_TAG = "SocketCamera:";
private static final int SOCKET_TIMEOUT = 1000;

static private SocketCamera socketCamera;
private CameraCapture capture;
private Camera parametersCamera;
private SurfaceHolder surfaceHolder;

//Set the IP address of your pc here!!
private final String address = "192.168.1.12";
private final int port = 9889;

private final boolean preserveAspectRatio = true;
private final Paint paint = new Paint();


private int width = 240;
private int height = 320;
private Rect bounds = new Rect(0, 0, width, height);

private SocketCamera() {
//Just used so that we can pass Camera.Paramters in getters and setters
parametersCamera = Camera.open();
}

static public SocketCamera open()
{
if (socketCamera == null) {
socketCamera = new SocketCamera();
}

Log.i(LOG_TAG, "Creating Socket Camera");
return socketCamera;
}

public void startPreview() {
capture = new CameraCapture();
capture.setCapturing(true);
capture.start();
Log.i(LOG_TAG, "Starting Socket Camera");

}

public void stopPreview(){
capture.setCapturing(false);
Log.i(LOG_TAG, "Stopping Socket Camera");
}

public void setPreviewDisplay(SurfaceHolder surfaceHolder) throws IOException {
this.surfaceHolder = surfaceHolder;
}

public void setParameters(Camera.Parameters parameters) {
//Bit of a hack so the interface looks like that of
Log.i(LOG_TAG, "Setting Socket Camera parameters");
parametersCamera.setParameters(parameters);
Size size = parameters.getPreviewSize();
bounds = new Rect(0, 0, size.width, size.height);
}
public Camera.Parameters getParameters() {
Log.i(LOG_TAG, "Getting Socket Camera parameters");
return parametersCamera.getParameters();
}

public void release() {
Log.i(LOG_TAG, "Releasing Socket Camera parameters");
//TODO need to implement this function
}


private class CameraCapture extends Thread {

private boolean capturing = false;

public boolean isCapturing() {
return capturing;
}

public void setCapturing(boolean capturing) {
this.capturing = capturing;
}

@Override
public void run() {
while (capturing) {
Canvas c = null;
try {
c = surfaceHolder.lockCanvas(null);
synchronized (surfaceHolder) {
Socket socket = null;
try {
socket = new Socket();
socket.bind(null);
socket.setSoTimeout(SOCKET_TIMEOUT);
socket.connect(new InetSocketAddress(address, port), SOCKET_TIMEOUT);

//obtain the bitmap
InputStream in = socket.getInputStream();
Bitmap bitmap = BitmapFactory.decodeStream(in);

//render it to canvas, scaling if necessary
if (
bounds.right == bitmap.getWidth() &&
bounds.bottom == bitmap.getHeight()) {
c.drawBitmap(bitmap, 0, 0, null);
} else {
Rect dest;
if (preserveAspectRatio) {
dest = new Rect(bounds);
dest.bottom = bitmap.getHeight() * bounds.right / bitmap.getWidth();
dest.offset(0, (bounds.bottom - dest.bottom)/2);
} else {
dest = bounds;
}
if (c != null)
{
c.drawBitmap(bitmap, null, dest, paint);
}
}

} catch (RuntimeException e) {
e.printStackTrace();

} catch (IOException e) {
e.printStackTrace();
} finally {
try {
socket.close();
} catch (IOException e) {
/* ignore */
}
}
}
} catch (Exception e) {
e.printStackTrace();
} finally {

// do this in a finally so that if an exception is thrown
// during the above, we don't leave the Surface in an
// inconsistent state
if (c != null) {
surfaceHolder.unlockCanvasAndPost(c);
}
}
}
Log.i(LOG_TAG, "Socket Camera capture stopped");
}
}

}

Make sure that you change the ip address to that of your PC.

Now we just need to make a few small modifications to the original CameraPreview. In this class look for the Preview class that extends the SurfaceView. Now we just need to comments out three lines and replace them with our own:



class Preview extends SurfaceView implements SurfaceHolder.Callback {
SurfaceHolder mHolder;
//Camera mCamera;
SocketCamera mCamera;
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);
}
public void surfaceCreated(SurfaceHolder holder) {
// The Surface has been created, acquire the camera and tell it where
// to draw.
//mCamera = Camera.open();
mCamera = SocketCamera.open();
try {
mCamera.setPreviewDisplay(holder);
} catch (IOException exception) {
mCamera.release();
mCamera = null;
// TODO: add more exception handling logic here
}
}


Here i've change three lines:

1. Camera mCamera is replaced with SocketCamera mCamera
2. mHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS); is replaced with mHolder.setType(SurfaceHolder.SURFACE_TYPE_NORMAL);
3. mCamera = Camera.open(); is replaced with mCamera = SocketCamera.open();.

So that's it.Now just make sure WebcamBroadcaster is running and start up the CameraPreview app in the Android emulator, you should now be seeing live previews in the emulator. Here's a short video of my emulator with the live preview: (Yes i know, it's me waving a book around)










Note: if the WebcamBroadcaster is not picking up your devices you most probably have a classpath issue. Make sure that you classpath points to the jmf.jar that is in the same folder as the jmf.properties file. If JMstudio works ok, its very likely that you have a classpath issue.

Oh, one last thing. I also updated the WebCamBroadcaster so that it can be used with YUV format cameras, so here's the code for that as well:

package com.webcambroadcaster;
import java.awt.Dimension;
import java.awt.image.BufferedImage;
import java.io.BufferedOutputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.Vector;

import javax.imageio.ImageIO;
import javax.media.Buffer;
import javax.media.CannotRealizeException;
import javax.media.CaptureDeviceInfo;
import javax.media.CaptureDeviceManager;
import javax.media.Format;
import javax.media.Manager;
import javax.media.MediaLocator;
import javax.media.NoDataSourceException;
import javax.media.NoPlayerException;
import javax.media.Player;
import javax.media.control.FrameGrabbingControl;
import javax.media.format.RGBFormat;
import javax.media.format.VideoFormat;
import javax.media.format.YUVFormat;
import javax.media.protocol.CaptureDevice;
import javax.media.protocol.DataSource;
import javax.media.util.BufferToImage;

/**
* A disposable class that uses JMF to serve a still sequence captured from a
* webcam over a socket connection. It doesn't use TCP, it just blindly
* captures a still, JPEG compresses it, and pumps it out over any incoming
* socket connection.
*
* @author Tom Gibara
*
*/

public class WebcamBroadcaster {

public static boolean RAW = false;


private static Player createPlayer(int width, int height) {
try {
Vector<CaptureDeviceInfo> devices = CaptureDeviceManager.getDeviceList(null);
for (CaptureDeviceInfo info : devices) {
DataSource source;
Format[] formats = info.getFormats();
for (Format format : formats) {
if ((format instanceof RGBFormat)) {
RGBFormat rgb = (RGBFormat) format;
Dimension size = rgb.getSize();
if (size.width != width || size.height != height) continue;
if (rgb.getPixelStride() != 3) continue;
if (rgb.getBitsPerPixel() != 24) continue;
if ( rgb.getLineStride() != width*3 ) continue;
MediaLocator locator = info.getLocator();
source = Manager.createDataSource(locator);
source.connect();
System.out.println("RGB Format Found");
((CaptureDevice)source).getFormatControls()[0].setFormat(rgb);
} else if ((format instanceof YUVFormat)) {
YUVFormat yuv = (YUVFormat) format;
Dimension size = yuv.getSize();
if (size.width != width || size.height != height) continue;
MediaLocator locator = info.getLocator();
source = Manager.createDataSource(locator);
source.connect();
System.out.println("YUV Format Found");
((CaptureDevice)source).getFormatControls()[0].setFormat(yuv);
} else {
continue;
}

return Manager.createRealizedPlayer(source);
}
}
} catch (IOException e) {
System.out.println(e.toString());
e.printStackTrace();
} catch (NoPlayerException e) {
System.out.println(e.toString());
e.printStackTrace();
} catch (CannotRealizeException e) {
System.out.println(e.toString());
e.printStackTrace();
} catch (NoDataSourceException e) {
System.out.println(e.toString());
e.printStackTrace();
}
return null;
}

public static void main(String[] args) {
int[] values = new int[args.length];
for (int i = 0; i < values.length; i++) {
values[i] = Integer.parseInt(args[i]);
}

WebcamBroadcaster wb;
if (values.length == 0) {
wb = new WebcamBroadcaster();
} else if (values.length == 1) {
wb = new WebcamBroadcaster(values[0]);
} else if (values.length == 2) {
wb = new WebcamBroadcaster(values[0], values[1]);
} else {
wb = new WebcamBroadcaster(values[0], values[1], values[2]);
}

wb.start();
}

public static final int DEFAULT_PORT = 9889;
public static final int DEFAULT_WIDTH = 320;
public static final int DEFAULT_HEIGHT = 240;

private final Object lock = new Object();

private final int width;
private final int height;
private final int port;

private boolean running;

private Player player;
private FrameGrabbingControl control;
private boolean stopping;
private Worker worker;

public WebcamBroadcaster(int width, int height, int port) {
this.width = width;
this.height = height;
this.port = port;
}

public WebcamBroadcaster(int width, int height) {
this(width, height, DEFAULT_PORT);
}

public WebcamBroadcaster(int port) {
this(DEFAULT_WIDTH, DEFAULT_HEIGHT, port);
}

public WebcamBroadcaster() {
this(DEFAULT_WIDTH, DEFAULT_HEIGHT, DEFAULT_PORT);
}

public void start() {
synchronized (lock) {
if (running) return;
player = createPlayer(width, height);
if (player == null) {
System.err.println("Unable to find a suitable player");
return;
}
System.out.println("Starting the player");
player.start();
control = (FrameGrabbingControl) player.getControl("javax.media.control.FrameGrabbingControl");
worker = new Worker();
worker.start();
System.out.println("Grabbing frames");
running = true;
}
}

public void stop() throws InterruptedException {
synchronized (lock) {
if (!running) return;
if (player != null) {
control = null;
player.stop();
player = null;
}
stopping = true;
running = false;
worker = null;
}
try {
worker.join();
} finally {
stopping = false;
}
}

private class Worker extends Thread {

private final int[] data = new int[width*height];

@Override
public void run() {
ServerSocket ss;
try {
ss = new ServerSocket(port);

} catch (IOException e) {
e.printStackTrace();
return;
}

while(true) {
FrameGrabbingControl c;
synchronized (lock) {
if (stopping) break;
c = control;
}
Socket socket = null;
try {
socket = ss.accept();

Buffer buffer = c.grabFrame();
BufferToImage btoi = new BufferToImage((VideoFormat)buffer.getFormat());
BufferedImage image = (BufferedImage) btoi.createImage(buffer);

if (image != null) {
OutputStream out = socket.getOutputStream();
if (RAW) {
image.getWritableTile(0, 0).getDataElements(0, 0, width, height, data);
image.releaseWritableTile(0, 0);
DataOutputStream dout = new DataOutputStream(new BufferedOutputStream(out));
for (int i = 0; i < data.length; i++) {
dout.writeInt(data[i]);
}
dout.close();
} else {
ImageIO.write(image, "JPEG", out);
}
}

socket.close();
socket = null;
} catch (IOException e) {
e.printStackTrace();
} finally {
if (socket != null)
try {
socket.close();
} catch (IOException e) {
/* ignore */
}
}

}

try {
ss.close();
} catch (IOException e) {
/* ignore */
}
}

}

}

34 comments:

  1. Hi
    I'm also trying to put to work Tom Gibara's code. But i'm with a problem, i have the latest android sdk and it keeps giving me the error in the WebcamBroadcaster class in the following lines:

    import java.awt.Dimension;
    import java.awt.image.BufferedImage;
    and
    import javax.imageio.ImageIO;

    It seems it cannot resolve this classes.
    What am i doing wrong?
    I take a look at my classpath and it is ok, just pointing to jmf.jar.

    Could you please help me with is?
    Thanks

    Carla

    ReplyDelete
  2. The WebcamBroadcaster should be run as a Separate Java application. It is not an Android app. It runs on you PC and broadcast frames from you web cam over a socket.

    The Socket camera class, which is running as Part of the CameraPeview Activity in the emulator will then pick up the broadcast frames and display them in the emulator.

    ReplyDelete
  3. Hi, I had just tried to using live Camera on the emulator. And I had a trouble getting the WebcamBroadcaster work. Here is the error message I recieved:

    -----------------------------------------------
    Could not find the main class: WebcamBroadcaster. Program will exit.
    -----------------------------------------------

    Could you please help me with this?
    Thanks a lot.

    Ben

    ReplyDelete
  4. Not a lot for me to go on there Ben. But the WebcamBroadcaster is just a simple Java application, that can be run from the command line or run in an IDE such as Eclipse. This looks like a classpath set up issue to me. Have a look on the web for how to compile and run a basic java application.

    ReplyDelete
  5. Hi,
    I used your example of WebcamBroadcaster, but I had some problems. When I execute, it returns null when it tries to execute line 49, and thus it stops on line 157, and returns this message: "Unable to find a suitable player".

    What am I doing wrong? Could you please help me with this?

    ReplyDelete
  6. You need to check that you have a device with RGB or YUV Fomat connected to your PC. One way.. Go to JMStudio File->preferences, click on capture devices. If your web cam is not of these formats you'll have to modify the code as I did for the YUV format.

    ReplyDelete
  7. Hi,
    I got my program running but the emulator give black screen ..
    what is the problem?? can any one help me ?

    ReplyDelete
  8. I have the same problem as Laet. I keep getting the "Unable to find a suitable player" exception. I tried to detect my device from JMStudio and my webcam is detected and I can even capture using the File menu options in JMFStudio.

    Also from the File->Preferences menu, it shows the following about my device

    Name = vfw:Microsoft WDM Image Capture (Win32):0

    Locator = vfw://0

    Output Formats---->

    0. javax.media.format.YUVFormat
    YUV Video Format: Size = java.awt.Dimension[width=160,height=120] MaxDataLength = 38400 DataType = class [B yuvType = 32 StrideY = 320 StrideUV = 320 OffsetY = 0 OffsetU = 1 OffsetV = 3

    1. javax.media.format.YUVFormat
    YUV Video Format: Size = java.awt.Dimension[width=176,height=144] MaxDataLength = 50688 DataType = class [B yuvType = 32 StrideY = 352 StrideUV = 352 OffsetY = 0 OffsetU = 1 OffsetV = 3

    2. javax.media.format.YUVFormat
    YUV Video Format: Size = java.awt.Dimension[width=320,height=240] MaxDataLength = 153600 DataType = class [B yuvType = 32 StrideY = 640 StrideUV = 640 OffsetY = 0 OffsetU = 1 OffsetV = 3

    3. javax.media.format.YUVFormat
    YUV Video Format: Size = java.awt.Dimension[width=352,height=288] MaxDataLength = 202752 DataType = class [B yuvType = 32 StrideY = 704 StrideUV = 704 OffsetY = 0 OffsetU = 1 OffsetV = 3

    4. javax.media.format.YUVFormat
    YUV Video Format: Size = java.awt.Dimension[width=640,height=480] MaxDataLength = 614400 DataType = class [B yuvType = 32 StrideY = 1280 StrideUV = 1280 OffsetY = 0 OffsetU = 1 OffsetV = 3


    Any suggestions?

    ReplyDelete
  9. Hi Andy,

    Had same problem of black screen but got it working.

    Check that:
    1)
    Your Preview Class has the following (original) methods

    public void surfaceDestroyed(SurfaceHolder holder) {
    mCamera.stopPreview();
    mCamera = null;
    }

    public void surfaceChanged(SurfaceHolder holder, int format, int w, int h) {
    Camera.Parameters parameters = mCamera.getParameters();
    parameters.setPreviewSize(w, h);
    mCamera.setParameters(parameters);
    mCamera.startPreview();
    }

    2) Your Manifest File contain CAMERA and INTERNET User permissions.

    ReplyDelete
  10. Don't forget that for the emulator it is necessary to have a proper internet address. In this case, since you are using the emulator in the same computer where the camera is connected to, you have to use "10.0.2.2" as your address.

    ReplyDelete
  11. Hi, this is awesome .
    But I have a question, If I want change the webcam to another entity phone, How should i do it?

    ReplyDelete
  12. Hi, this is a really great job, but the problem is that I don't know how to make it run xD.
    Can you help me?? What's the code I need to add to the onCreate Activity method??

    Thx.

    ReplyDelete
  13. Regards,

    I am working with your code for the emulator to recognize the webcam on my computer and your camera to run applications from my computer as Layar. Working from the Eclipse IDE where I have an activity / application with your code and SurfaceWiew SocketCamera (which are 2 necessary as I understand).

    Emitted from JMF with my cam RGB to IP 127.0.0.1 port 8888 which is the IP I set in the program.

    Not what I'm doing wrong but when running the application gives me error: java.lang.RuntimeException and java.lang.IllegalAccesException.

    Anyone can help me? Thanks.

    ReplyDelete
  14. Thanks a lot, it works for me and it's really useful.

    I have also written the methods takePicture for SocketCamera. They are on my blog, but it's in italian, so if any english user is interested i paste methods here. (maybe not the best code but it works)

    // Prova per takePicture
    public final void takePicture(Camera.ShutterCallback shutter, Camera.PictureCallback raw, Camera.PictureCallback jpeg) {
    takePicture(shutter, raw, null, jpeg);
    }
    public final void takePicture(Camera.ShutterCallback shutter,
    Camera.PictureCallback raw, Camera.PictureCallback postview, Camera.PictureCallback jpeg) {
    stopPreview();

    try {
    Socket socket = null;
    try {
    socket = new Socket();
    socket.bind(null);
    socket.setSoTimeout(SOCKET_TIMEOUT);
    socket.connect(new InetSocketAddress(address, port), SOCKET_TIMEOUT);

    if (shutter != null) shutter.onShutter();

    // obtain the bitmap
    InputStream in = socket.getInputStream();
    Bitmap bitmap = BitmapFactory.decodeStream(in);
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    bitmap.compress(Bitmap.CompressFormat.PNG, 100, baos); //bm is the bitmap object
    byte[] b = baos.toByteArray();
    // Chiama la callback
    if (raw != null) raw.onPictureTaken(b, null);
    if (postview != null) postview.onPictureTaken(b, null);
    if (jpeg != null) jpeg.onPictureTaken(b, null);
    } catch (RuntimeException e) {
    e.printStackTrace();
    } catch (IOException e) {
    e.printStackTrace();
    } finally {
    try {
    socket.close();
    } catch (IOException e)
    /* ignore */
    }
    }
    } catch (Exception e) {
    e.printStackTrace();
    } finally {
    }
    }

    @Alejandro: i don't have your problems running this code, but :
    1- If i remember right 127.0.0.1 it's the loopback address of the emulator and if u want to connect to your Computer u must use the explicit ip addres of computer or 10.0.2.2 (see networking under android emulator on android sdk pages)
    2- IllegalAccesException point me to permissions of your Code, check the AndroidManifest if u have added permission for both CAMERA and INTERNET.
    Elsewhere i can't help, sorry.

    ReplyDelete
  15. hi,
    exactly which of the files required, do i have to add the all of others on the tom gibara's page?

    ReplyDelete
  16. hi,
    very useful work,i'm working on a android application and i need to be able to use my laptop webcam to go one step forward in my project..but everytime i run your work i get an error:

    "The application ...(process ...)has stopped unexpectedly.Please try again."

    Can anyone know how to get rid of this error, please someone help me,
    thanks in andvance

    ReplyDelete
  17. can you post a link to zip project please ?

    thanx

    ReplyDelete
  18. hi,
    i can run the code successfully with any error,
    however, the webcam image can't be shown in the emulator. 3 question i would like to ask:

    1. how can i ensure the broadcaster is running successfully? i compile it and it shows the following:
    RGB Format Found
    Starting the player
    Grabbing frames

    2. do i need to run the JMStudio before i execute the broadcastor?

    3. what IP address in the SocketCamera? i tried 10.0.0.2 (my computer's IP), 10.0.2.2 and 127.0.0.1, all don't work.

    anyone can help? thanks!!

    ReplyDelete
  19. Harry:
    1.broadcaster is fine(on port 9889)
    2.no
    3.i just did ipconfig and set the address(192.168.xx.xx) in socketcamera.

    ReplyDelete
  20. Anonymous has left a new comment on your post "Live camera preview in the Android emulator":

    Hello Neil,thanks a lot for this post....i got it working with a Frontech webcam on XP.
    For the benefit of the readers,apart from the changes that u hv mentioned above,the following should be entered in the manifest file:

    uses-permission android:name="android.permission.CAMERA"
    uses-permission android:name="android.permission.INTERNET"

    The first one is reqd when we are doing Camera.open() and the next one for the socket connection.
    I had another problem in teh manifest file,that being a mismatch between the activity name,which should be CameraPreview if we are directly using your source files.
    Thanks again...
    Biswajit Goswami

    ReplyDelete
  21. Hi,
    I used the same code but it doesn't work for me.
    the question that I want to ask is:
    what is the version of sdk that you used to make it run and also the level
    thanks

    ReplyDelete
  22. Hi!

    I use ubuntu 10.10 and a Logitech Quickcam Express. The code is working fine. I just do not get a picture from the camera. I only get black with white noise. It's the same in JM studio. I guess this is a problem with my cam driver, or am i wrong???

    Ubuntu 10.10 provides a driver, so i used it. Do i have to install an extra driver, or is it another problem.

    ReplyDelete
  23. Hi,
    I tried to make this code to work but I don't see the code of Activity to launch the screen so please can you help me
    thanks

    ReplyDelete
  24. hi, i don't know what's wrong but I was having hard time getting the emulator detect the camera.
    I checked the JMStudio and it worked well, I also checked and configured the environment variable classpath and path but still not working.

    what could be the cause of this problem?
    any help please, thanks. got stocked on this

    ReplyDelete
  25. Hi,
    I try this code and run wonderfully, thanks.
    Now, I'd like to create some shape over the camera view.
    Can anyone help me?

    ReplyDelete
  26. Hello friends....Can anyone please post all the java files that are required for using webcam in android emulator?...Also, please provide some step-by-step instructions as to which file should go where....I am working on a Barcode Scanner project and I am not able to get the emulator camera work, so any help is greatly appreciated......I tried some of the steps here and also from Tomgibara's site...but I am not able to understand which files should go where and what code i should include in my Activity.......Also, i am having trouble with the webcambroadcaster file, which keeps giving me errors, so is many other files. I followed the steps mentioned below, but i have so many errors when i include the files in my project......http://stackoverflow.com/questions/1276450/how-to-use-web-camera-in-android-emulator-to-capture-a-live-image.

    Please also mention the sdk and jdk versions to use in order to run these files...

    Thanks in advance and please try to reply early.

    ReplyDelete
  27. can anyone post the original CameraPreview class?It seems a lot of the functions have been deprecated...........or what r the changes needed in the new file?

    ReplyDelete
  28. Hello friends....Can anyone please post all the java files that are required for using webcam in android emulator?...Also, please provide some step-by-step instructions as to which file should go where....I am working on a Barcode Scanner project and I am not able to get the emulator camera work, so any help is greatly appreciated and how can i get the port number pleas any one reply

    ReplyDelete
  29. guy, I get error: java.io.IOException: Could not connect to capture device
    not connecting in WebcamBroadcaster

    if you can help me

    ReplyDelete
  30. Olá amigo,
    na classe CameraPreview da um erro no getChildCount e getChildAt do metodo onLayout. pode me ajudar?

    ReplyDelete
  31. Hi ,
    This is Roy.Your Sensor simulator app is very nice,am very impresed on that.I try to create android mobile captured video stream to server using RTSP/RTP.I am a android fresher please can u guide me.
    Mail ID== roy8086@gmail.com
    All ideas are welcome
    Thanks
    Roy

    ReplyDelete
  32. First thanxs 4 ur great work changing Tomgibara's code. I have tried to execute both, Webcambroadcaster and SocketCamera. I don't know if it's correct, my webcambroadcaster shows like someone's above:

    RGB Format Found
    Starting the player
    Grabbing frames

    And my socketcamera still shows that chess picture in instead of my webcam. What am I doing wrong? I noticed indeed Webcambroadcaster stops on:

    socket = ss.accept();

    I also create an entry on firewall 4 port 9889.

    Thanxs in advance.

    ReplyDelete
  33. i tested on android 2.3 and works very well, thanks man!

    ReplyDelete
  34. Could someone release a click and run version of this webcam-client and -server...

    and post a link

    ReplyDelete