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Refactored Android sample (1-java)

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This commit is contained in:
Andrey Kamaev 2011-07-15 07:18:45 +00:00
parent c3e9d0dd7e
commit 72a55a4139
4 changed files with 151 additions and 157 deletions
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2
modules/java/android/.classpath
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@ -3,5 +3,5 @@
<classpathentry kind="src" path="src"/> <classpathentry kind="src" path="src"/>
<classpathentry kind="src" path="gen"/> <classpathentry kind="src" path="gen"/>
<classpathentry kind="con" path="com.android.ide.eclipse.adt.ANDROID_FRAMEWORK"/> <classpathentry kind="con" path="com.android.ide.eclipse.adt.ANDROID_FRAMEWORK"/>
<classpathentry kind="output" path="bin1"/> <classpathentry kind="output" path="cls"/>
</classpath> </classpath>

42
samples/android/1-java/src/org/opencv/samples/s1/Sample1Java.java
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@ -8,45 +8,47 @@ import android.view.MenuItem;
import android.view.Window; import android.view.Window;
public class Sample1Java extends Activity { public class Sample1Java extends Activity {
private static final String TAG = "Sample1Java::Activity"; private static final String TAG = "Sample::Activity";
public static final int VIEW_MODE_RGBA = 0; public static final int VIEW_MODE_RGBA = 0;
public static final int VIEW_MODE_GRAY = 1; public static final int VIEW_MODE_GRAY = 1;
public static final int VIEW_MODE_CANNY = 2; public static final int VIEW_MODE_CANNY = 2;
public static final int VIEW_MODE_SOBEL = 3; public static final int VIEW_MODE_SOBEL = 3;
public static final int VIEW_MODE_BLUR = 4; public static final int VIEW_MODE_BLUR = 4;
private MenuItem mItemPreviewRGBA; private MenuItem mItemPreviewRGBA;
private MenuItem mItemPreviewGray; private MenuItem mItemPreviewGray;
private MenuItem mItemPreviewCanny; private MenuItem mItemPreviewCanny;
private MenuItem mItemPreviewSobel; private MenuItem mItemPreviewSobel;
private MenuItem mItemPreviewBlur; private MenuItem mItemPreviewBlur;
public static int viewMode = VIEW_MODE_RGBA; public static int viewMode = VIEW_MODE_RGBA;
public Sample1Java(){ public Sample1Java() {
Log.i(TAG, "Instantiated new " + this.getClass()); Log.i(TAG, "Instantiated new " + this.getClass());
} }
/** Called when the activity is first created. */ /** Called when the activity is first created. */
@Override @Override
public void onCreate(Bundle savedInstanceState) { public void onCreate(Bundle savedInstanceState) {
Log.i(TAG, "onCreate"); Log.i(TAG, "onCreate");
super.onCreate(savedInstanceState); super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE); requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(new Sample1View(this)); setContentView(new Sample1View(this));
} }
@Override
public boolean onCreateOptionsMenu(Menu menu) { public boolean onCreateOptionsMenu(Menu menu) {
Log.i(TAG, "onCreateOptionsMenu"); Log.i(TAG, "onCreateOptionsMenu");
mItemPreviewRGBA = menu.add("Preview RGBA"); mItemPreviewRGBA = menu.add("Preview RGBA");
mItemPreviewGray = menu.add("Preview GRAY"); mItemPreviewGray = menu.add("Preview GRAY");
mItemPreviewCanny = menu.add("Canny"); mItemPreviewCanny = menu.add("Canny");
mItemPreviewSobel = menu.add("Sobel"); mItemPreviewSobel = menu.add("Sobel");
mItemPreviewBlur = menu.add("Blur"); mItemPreviewBlur = menu.add("Blur");
return true; return true;
} }
@Override
public boolean onOptionsItemSelected(MenuItem item) { public boolean onOptionsItemSelected(MenuItem item) {
Log.i(TAG, "Menu Item selected " + item); Log.i(TAG, "Menu Item selected " + item);
if (item == mItemPreviewRGBA) if (item == mItemPreviewRGBA)

76
samples/android/1-java/src/org/opencv/samples/s1/Sample1View.java
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@ -15,40 +15,32 @@ class Sample1View extends SampleViewBase {
public Sample1View(Context context) { public Sample1View(Context context) {
super(context); super(context);
} }
@Override @Override
public void surfaceChanged(SurfaceHolder _holder, int format, int width, int height) { public void surfaceChanged(SurfaceHolder _holder, int format, int width, int height) {
super.surfaceChanged(_holder, format, width, height); super.surfaceChanged(_holder, format, width, height);
synchronized (this) { synchronized (this) {
// initialize all required Mats before usage to minimize number of auxiliary jni calls // initialize Mats before usage
if(mYuv != null) mYuv.dispose(); mYuv = new Mat(getFrameHeight() + getFrameHeight() / 2, getFrameWidth(), CvType.CV_8UC1);
mYuv = new Mat(getFrameHeight()+getFrameHeight()/2, getFrameWidth(), CvType.CV_8UC1); mGraySubmat = mYuv.submat(0, getFrameHeight(), 0, getFrameWidth());
if(mRgba != null) mRgba.dispose();
mRgba = new Mat(getFrameHeight(), getFrameWidth(), CvType.CV_8UC4);
if(mGraySubmat != null) mGraySubmat.dispose();
mGraySubmat = mYuv.submat(0, getFrameHeight(), 0, getFrameWidth());
if(mIntermediateMat != null) mIntermediateMat.dispose(); mRgba = new Mat();
mIntermediateMat = new Mat(getFrameHeight(), getFrameWidth(), CvType.CV_8UC1); mIntermediateMat = new Mat();
} }
} }
@Override @Override
protected Bitmap processFrame(byte[] data) protected Bitmap processFrame(byte[] data) {
{ mYuv.put(0, 0, data);
mYuv.put(0, 0, data);
switch (Sample1Java.viewMode) {
switch(Sample1Java.viewMode)
{
case Sample1Java.VIEW_MODE_GRAY: case Sample1Java.VIEW_MODE_GRAY:
imgproc.cvtColor(mGraySubmat, mRgba, imgproc.CV_GRAY2RGBA, 4); imgproc.cvtColor(mGraySubmat, mRgba, imgproc.CV_GRAY2RGBA, 4);
break; break;
case Sample1Java.VIEW_MODE_RGBA: case Sample1Java.VIEW_MODE_RGBA:
imgproc.cvtColor(mYuv, mRgba, imgproc.CV_YUV420i2RGB, 4); imgproc.cvtColor(mYuv, mRgba, imgproc.CV_YUV420i2RGB, 4);
core.putText(mRgba, "OpenCV + Android", new Point(10,100), 3/*CV_FONT_HERSHEY_COMPLEX*/, 2, new Scalar(255, 0, 0, 255), 3); core.putText(mRgba, "OpenCV + Android", new Point(10, 100), 3/* CV_FONT_HERSHEY_COMPLEX */, 2, new Scalar(255, 0, 0, 255), 3);
break; break;
case Sample1Java.VIEW_MODE_CANNY: case Sample1Java.VIEW_MODE_CANNY:
imgproc.Canny(mGraySubmat, mIntermediateMat, 80, 100); imgproc.Canny(mGraySubmat, mIntermediateMat, 80, 100);
@ -64,32 +56,34 @@ class Sample1View extends SampleViewBase {
imgproc.blur(mRgba, mRgba, new Size(15, 15)); imgproc.blur(mRgba, mRgba, new Size(15, 15));
break; break;
} }
Bitmap bmp = Bitmap.createBitmap(getFrameWidth(), getFrameHeight(), Bitmap.Config.ARGB_8888); Bitmap bmp = Bitmap.createBitmap(getFrameWidth(), getFrameHeight(), Bitmap.Config.ARGB_8888);
android.MatToBitmap(mRgba, bmp);
if (android.MatToBitmap(mRgba, bmp))
return bmp; return bmp;
bmp.recycle();
return null;
} }
@Override @Override
public void run() { public void run() {
super.run(); super.run();
// Explicitly deallocate Mats synchronized (this) {
if(mYuv != null) { // Explicitly deallocate Mats
mYuv.dispose(); if (mYuv != null)
mYuv.dispose();
if (mRgba != null)
mRgba.dispose();
if (mGraySubmat != null)
mGraySubmat.dispose();
if (mIntermediateMat != null)
mIntermediateMat.dispose();
mYuv = null; mYuv = null;
}
if(mRgba != null) {
mRgba.dispose();
mRgba = null; mRgba = null;
}
if(mGraySubmat != null) {
mGraySubmat.dispose();
mGraySubmat = null; mGraySubmat = null;
}
if(mIntermediateMat != null) {
mIntermediateMat.dispose();
mIntermediateMat = null; mIntermediateMat = null;
} }
} }

188
samples/android/1-java/src/org/opencv/samples/s1/SampleViewBase.java
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@ -12,110 +12,108 @@ import android.view.SurfaceHolder;
import android.view.SurfaceView; import android.view.SurfaceView;
public abstract class SampleViewBase extends SurfaceView implements SurfaceHolder.Callback, Runnable { public abstract class SampleViewBase extends SurfaceView implements SurfaceHolder.Callback, Runnable {
private static final String TAG = "SampleViewBase"; private static final String TAG = "Sample::SurfaceView";
private Camera mCamera;
private SurfaceHolder mHolder;
private int mFrameWidth;
private int mFrameHeight;
private byte[] mFrame;
private boolean mThreadRun;
public SampleViewBase(Context context) { private Camera mCamera;
super(context); private SurfaceHolder mHolder;
private int mFrameWidth;
private int mFrameHeight;
private byte[] mFrame;
private boolean mThreadRun;
public SampleViewBase(Context context) {
super(context);
mHolder = getHolder(); mHolder = getHolder();
mHolder.addCallback(this); mHolder.addCallback(this);
Log.i(TAG, "Instantiated new " + this.getClass()); Log.i(TAG, "Instantiated new " + this.getClass());
} }
public int getFrameWidth() { public int getFrameWidth() {
return mFrameWidth; return mFrameWidth;
} }
public int getFrameHeight() { public int getFrameHeight() {
return mFrameHeight; return mFrameHeight;
} }
public void surfaceChanged(SurfaceHolder _holder, int format, int width, int height) { public void surfaceChanged(SurfaceHolder _holder, int format, int width, int height) {
Log.i(TAG, "surfaceCreated"); Log.i(TAG, "surfaceCreated");
if ( mCamera != null) { if (mCamera != null) {
Camera.Parameters params = mCamera.getParameters(); Camera.Parameters params = mCamera.getParameters();
List<Camera.Size> sizes = params.getSupportedPreviewSizes(); List<Camera.Size> sizes = params.getSupportedPreviewSizes();
mFrameWidth = width; mFrameWidth = width;
mFrameHeight = height; mFrameHeight = height;
//selecting optimal camera preview size
{
double minDiff = Double.MAX_VALUE;
for (Camera.Size size : sizes) {
if (Math.abs(size.height - height) < minDiff) {
mFrameWidth = size.width;
mFrameHeight = size.height;
minDiff = Math.abs(size.height - height);
}
}
}
params.setPreviewSize(getFrameWidth(), getFrameHeight()); // selecting optimal camera preview size
mCamera.setParameters(params); {
mCamera.startPreview(); double minDiff = Double.MAX_VALUE;
} for (Camera.Size size : sizes) {
} if (Math.abs(size.height - height) < minDiff) {
mFrameWidth = size.width;
mFrameHeight = size.height;
minDiff = Math.abs(size.height - height);
}
}
}
public void surfaceCreated(SurfaceHolder holder) { params.setPreviewSize(getFrameWidth(), getFrameHeight());
Log.i(TAG, "surfaceCreated"); mCamera.setParameters(params);
mCamera = Camera.open(); mCamera.startPreview();
mCamera.setPreviewCallback( }
new PreviewCallback() { }
public void onPreviewFrame(byte[] data, Camera camera) {
synchronized(SampleViewBase.this) {
mFrame = data;
SampleViewBase.this.notify();
}
}
}
);
(new Thread(this)).start();
}
public void surfaceDestroyed(SurfaceHolder holder) { public void surfaceCreated(SurfaceHolder holder) {
Log.i(TAG, "surfaceDestroyed"); Log.i(TAG, "surfaceCreated");
mThreadRun = false; mCamera = Camera.open();
if(mCamera != null) { mCamera.setPreviewCallback(new PreviewCallback() {
synchronized(this) { public void onPreviewFrame(byte[] data, Camera camera) {
mCamera.stopPreview(); synchronized (SampleViewBase.this) {
mCamera.setPreviewCallback(null); mFrame = data;
mCamera.release(); SampleViewBase.this.notify();
mCamera = null; }
} }
} });
} (new Thread(this)).start();
}
protected abstract Bitmap processFrame(byte[] data);
public void run() { public void surfaceDestroyed(SurfaceHolder holder) {
mThreadRun = true; Log.i(TAG, "surfaceDestroyed");
Log.i(TAG, "Starting processing thread"); mThreadRun = false;
while(mThreadRun) { if (mCamera != null) {
Bitmap bmp = null; synchronized (this) {
mCamera.stopPreview();
synchronized(this) { mCamera.setPreviewCallback(null);
try { mCamera.release();
this.wait(); mCamera = null;
bmp = processFrame(mFrame); }
} catch (InterruptedException e) { }
e.printStackTrace(); }
}
} protected abstract Bitmap processFrame(byte[] data);
if (bmp != null) { public void run() {
Canvas canvas = mHolder.lockCanvas(); mThreadRun = true;
if (canvas != null){ Log.i(TAG, "Starting processing thread");
canvas.drawBitmap(bmp, (canvas.getWidth()-getFrameWidth())/2, (canvas.getHeight()-getFrameHeight())/2, null); while (mThreadRun) {
mHolder.unlockCanvasAndPost(canvas); Bitmap bmp = null;
}
bmp.recycle(); synchronized (this) {
} try {
} this.wait();
} bmp = processFrame(mFrame);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
if (bmp != null) {
Canvas canvas = mHolder.lockCanvas();
if (canvas != null) {
canvas.drawBitmap(bmp, (canvas.getWidth() - getFrameWidth()) / 2, (canvas.getHeight() - getFrameHeight()) / 2, null);
mHolder.unlockCanvasAndPost(canvas);
}
bmp.recycle();
}
}
}
} }