!7

import android.app.Activity;

import android.widget.*;

import android.graphics.*;

import android.hardware.Camera;

import android.view.*;

p {

  print("Listing cameras...");

  runOnUiThread(r {

    int n = Camera.getNumberOfCameras();

    System.out.println("Cameras: " + n);

    final Camera cam = Camera.open(0/*n-1*/);

    Camera.Parameters p = cam.getParameters();

    p.setPreviewSize(100, 100);

    cam.setParameters(p);

    SurfaceView surfaceView = new SurfaceView(androidContext());

    SurfaceHolder surfaceHolder = surfaceView.getHolder();

    surfaceHolder.addCallback(new CamCallback());

    surfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);

    androidShow(surfaceView);

    cam.setPreviewDisplay(surfaceHolder);

    cam.startPreview();

    print("Preview started.");

    surfaceView.post(r {

      cam.takePicture(null, null, null, new JpegCallback());

    });

    print("Waiting for callback");

  });

}

static class CamCallback implements SurfaceHolder.Callback {

  public void surfaceChanged (SurfaceHolder holder, int format, int width, int height) {

    print("surfaceChanged");

  }

  public void surfaceCreated (SurfaceHolder holder) {

    print("surfaceCreated");

  }

  public void surfaceDestroyed (SurfaceHolder holder) {

    print("surfaceDestroyed");

  }

}

static class ShutterCallback implements Camera.ShutterCallback {

  public void onShutter() {

    print("Shutter!");

  }

}

static class JpegCallback implements Camera.PictureCallback {

  public void onPictureTaken (byte[] data, Camera cam) {

    TextView tv = aTextView();

    tv.setText("Picture data: " + data.length);

    androidShow(tv);

    System.out.println("Picture data: " + data.length);

    cam.release();

    print("Camera released.");

  }

}