Android Open Source - droid-aegis Mock Camera

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Back to project page droid-aegis.

License

The source code is released under:

MIT License

Java Source Code

package com.app.camstreamer;
//from   w w w. ja  v a 2  s.  co m
import java.io.IOException;

import android.graphics.ImageFormat;
import android.hardware.Camera;
import android.hardware.Camera.ErrorCallback;
import android.hardware.Camera.PreviewCallback;
import android.hardware.Camera.Size;
import android.util.Log;
import android.view.SurfaceHolder;

public class MockCamera {
  private static final String tag = "MockCamera";
  private Camera    mCam;
  private int      mWidth, mHeight;
  private CameraErrors  mCamErr;
  private PreviewHandler  mPrevhandler;
  private BufferHandler  mBuff;
  private BufferNtfHandler  mBuffNtf;

  public MockCamera() {
    // TODO Auto-generated constructor stub
    mCam = null;
    mWidth = mHeight = 0;
    mCamErr = new CameraErrors();
    mPrevhandler = new PreviewHandler();
    mBuff    = new BufferHandler();
    mBuffNtf  = new BufferNtfHandler();
  }

  public boolean initCamera () {
    mCam = Camera.open();
    if (mCam == null) {
      Log.d(tag, "Failed to open Camera");
      return false;
    }
    mCam.setErrorCallback(mCamErr);
    return true;
  }
  
  public void setMockPreviewSize (int width, int height) {
    mWidth = width;
    mHeight = height;
  }
  
  @SuppressWarnings("deprecation")
  public void doPreview (SurfaceHolder mHolder) {
    try {
      mCam.setPreviewDisplay(mHolder);
    } catch (IOException e) {
      // TODO Auto-generated catch block
      e.printStackTrace();
    }
    Camera.Parameters  mParams = mCam.getParameters();
//    Log.d(tag, "Picture format " + mParams.getPictureFormat());
//    Size = mParams.getPreviewSize();

    mParams.setPictureSize(mWidth, mHeight);
//    mParams.setPictureFormat(ImageFormat.NV16);
//    List<Integer> pitformat = mParams.getSupportedPictureFormats();
//    List<Integer> prvFormat = mParams.getSupportedPreviewFormats();
//    Log.d(tag, "Picture format " + Arrays.toString(picformat.toArray()));
//    Log.d(tag, "items = " + prvFormat.size() + " Preview format " + Arrays.toString(prvFormat.toArray()));
    mParams.setPreviewFrameRate(15);
    mCam.setParameters(mParams);
    mParams = mCam.getParameters();
//    mCam.setPreviewCallback(mPrevhandler);
//    mCam.startPreview();
    Size size = mParams.getPreviewSize();
    Log.d(tag, "Preview Size w = " + size.height + " h = " + size.height);
    int bpp = ImageFormat.getBitsPerPixel(mParams.getPreviewFormat());
    Log.d(tag, "BytesPerPixel = " + bpp);
//    Log.d(tag, "Preview format " + mParams.getPreviewFormat());
//    Log.d(tag, "Picture frame rate " + mParams.getPreviewFrameRate());
    /* On LG Optimus P500
     * D/MockCamera(16490): Preview Size w = 480 h = 480
     * D/MockCamera(16490): BytesPerPixel = 12
     * width * height = number of pixels
     * total number of bits = (w * h) * 12 / 8;
     */
    int previewSize = 460800;//((size.width * size.height * bpp) / 12);
    mBuff.registerBufferNotifier(mBuffNtf);
    mBuff.createBuffers(previewSize);
//    mCam.startPreview();
  }
  
  public void release () {
    mCam.setPreviewCallback(null);
    mCam.stopPreview();
    mCam.release();
    mBuff.clean();
  }
  
  //TODO: This is documented as not optimized for efficiency for preview and
  // improved frame rate. Must move onto setPreviewCallbackWithBuffer
  private class PreviewHandler implements PreviewCallback {

    @Override
    public void onPreviewFrame(byte[] data, Camera camera) {
      // TODO Auto-generated method stub
      mBuff.DispatchFrame(data);
//      Log.d(tag, "Data length " + data.length);
    }
  }

  private class CameraErrors implements ErrorCallback {

    @Override
    public void onError(int error, Camera camera) {
      // TODO Auto-generated method stub
      Log.d(tag, "Camera onError " + error);
    }
    
  }
  
  private class BufferNtfHandler implements BufferNotifications {

    @Override
    public void onBuffersCreated() {
      Log.d(tag, "OnBuffersCreated Called. Start Preview");
      mCam.setPreviewCallback(mPrevhandler);
      mCam.startPreview();
    }

    @Override
    public void onError(int error, int what) {
      // TODO Auto-generated method stub
      
    }
    
  }
}

Java Source Code List

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