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Merge pull request #846 from smart-mobile-software:tuto_crash

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This commit is contained in:
Andrey Pavlenko 2013-05-07 15:15:16 +04:00 committed by OpenCV Buildbot
commit 2faa2adae2
2 changed files with 32 additions and 24 deletions
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2
modules/java/generator/src/java/android+JavaCameraView.java
View File

@ -208,6 +208,8 @@ public class JavaCameraView extends CameraBridgeViewBase implements PreviewCallb
synchronized (this) {
if (mCamera != null) {
mCamera.stopPreview();
mCamera.setPreviewCallback(null);
mCamera.release();
}
mCamera = null;

40
samples/android/tutorial-3-cameracontrol/src/org/opencv/samples/tutorial3/Tutorial3View.java
View File

@ -6,17 +6,16 @@ import java.util.List;
import org.opencv.android.JavaCameraView;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.hardware.Camera;
import android.hardware.Camera.PictureCallback;
import android.hardware.Camera.Size;
import android.util.AttributeSet;
import android.util.Log;
public class Tutorial3View extends JavaCameraView {
public class Tutorial3View extends JavaCameraView implements PictureCallback {
private static final String TAG = "Sample::Tutorial3View";
private String mPictureFileName;
public Tutorial3View(Context context, AttributeSet attrs) {
super(context, attrs);
@ -56,26 +55,33 @@ public class Tutorial3View extends JavaCameraView {
}
public void takePicture(final String fileName) {
Log.i(TAG, "Tacking picture");
PictureCallback callback = new PictureCallback() {
Log.i(TAG, "Taking picture");
this.mPictureFileName = fileName;
// Postview and jpeg are sent in the same buffers if the queue is not empty when performing a capture.
// Clear up buffers to avoid mCamera.takePicture to be stuck because of a memory issue
mCamera.setPreviewCallback(null);
private String mPictureFileName = fileName;
// PictureCallback is implemented by the current class
mCamera.takePicture(null, null, this);
}
@Override
public void onPictureTaken(byte[] data, Camera camera) {
Log.i(TAG, "Saving a bitmap to file");
Bitmap picture = BitmapFactory.decodeByteArray(data, 0, data.length);
try {
FileOutputStream out = new FileOutputStream(mPictureFileName);
picture.compress(Bitmap.CompressFormat.JPEG, 90, out);
picture.recycle();
// The camera preview was automatically stopped. Start it again.
mCamera.startPreview();
} catch (Exception e) {
e.printStackTrace();
}
}
};
mCamera.setPreviewCallback(this);
// Write the image in a file (in jpeg format)
try {
FileOutputStream fos = new FileOutputStream(mPictureFileName);
fos.write(data);
fos.close();
} catch (java.io.IOException e) {
Log.e("PictureDemo", "Exception in photoCallback", e);
}
mCamera.takePicture(null, null, callback);
}
}