I'm writing a code using OpenCV VIDEO PROCESSING, and i want to open the camera flash when first opening the camera. i have implemented a new class that is extended from JavaCameraView but the app crashes when i run it.
Anyone please can help me to fix the error, or tell me if there another way to make the flash works with VIDEO PROCESSING
the extended class that i use from this source[link text](http://stackoverflow.com/questions/27382720/opencv-android-open-camera-flash?rq=1) as the Following:
public class CameraCustomize extends JavaCameraView implements Camera.PictureCallback {
private String mPictureFileName;
public CameraCustomize(Context context, AttributeSet attrs) {
super(context, attrs);
}
public List getEffectList() {
return mCamera.getParameters().getSupportedFlashModes();
}
public boolean isEffectSupported() {
return (mCamera.getParameters().getFlashMode() != null);
}
public String getEffect() {
return mCamera.getParameters().getFlashMode();
}
public void setEffect(String effect) {
mCamera.getParameters();
Camera.Parameters params = mCamera.getParameters();
params.setFlashMode(effect);
mCamera.setParameters(params);
}
public List getResolutionList() {
return mCamera.getParameters().getSupportedPreviewSizes();
}
public void setResolution(int w, int h) {
disconnectCamera();
mMaxHeight = h;
mMaxWidth = w;
connectCamera(getWidth(), getHeight());
}
public Camera.Size getResolution() {
return mCamera.getParameters().getPreviewSize();
}
public void takePicture(final String fileName) {
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);
// PictureCallback is implemented by the current class
mCamera.takePicture(null, null, this);
}
@Override
public void onPictureTaken(byte[] data, Camera camera) {
// The camera preview was automatically stopped. Start it again.
mCamera.startPreview();
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);
}
}
public void cameraRelease() {
if(mCamera != null){
mCamera.release();
}
}
}
and when i call this line i get the error :
private CameraCustomize mOpenCvCameraView;
mOpenCvCameraView.setEffect(Camera.Parameters.FLASH_MODE_ON);
the error is in `mCamera.setParameters(params);`
Thank you in advanced
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