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How to make burst mode available to Camera

Asked 2011-07-31T11:46:35.737
12

I am trying to build a small photo app with a burst mode for camera. The main idea is to shoot a picture every 0,3sec and to store the pictures in an Array until the last picture is taken. The number of pictures to shoot should specified.

I can only shoot a picture every 2sec. as shortest interval. Then, when the pictures should be written to storage, the applications chrashes.

Does someone know how to implement this? Here is my code:

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.graphics.PixelFormat;
import android.hardware.Camera;
import android.os.Bundle;
import android.util.Log;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.View;
import android.view.Window;
import android.view.WindowManager;
import android.view.View.OnClickListener;

public class CamaeaView extends Activity implements SurfaceHolder.Callback, OnClickListener {

    static final int FOTO_MODE = 1;
    private static final String TAG = "Test";
    Camera mCamera;
    boolean mPreviewRunning = false;
    private Context mContext = this;
    ArrayList<Object> listImage = null;
    public static ArrayList<Object> List1[];

    public void onCreate(Bundle icicle) {
        super.onCreate(icicle);

        Log.e(TAG, "onCreate");

        @SuppressWarnings("unused")
        Bundle extras = getIntent().getExtras();

        getWindow().setFormat(PixelFormat.TRANSLUCENT);
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
                WindowManager.LayoutParams.FL
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1 Answer

17

AFAIK, you cannot take another picture until the first one is complete. Eliminate your for loop and Thread.sleep(). Take the next picture in mPictureCallback.

The main idea is to shoot a picture every 0,3sec and to store the pictures in an Array until the last picture is taken.

The "0,3sec" objective is faster than most devices can process an image, and you may not have enough heap space for your array of images. I suspect that you will have to write each image out to disk as it comes in via an AsyncTask, so you can free up the heap space while also not tying up the main application thread.

answered 2011-07-31T12:54:39.813

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