Problem using Ketai function savePhoto();

jrmasiero

I'm making a timeLapse app for capturing photos with a 10 seconds interval, but everytime I use the savePhoto() function with a boolean the sketch crashes. Strangely, when I use the same code but with the savePhoto() inside a void mousePressed it works nicely. Here is the code and the error message below.

`/** *

Ketai Sensor Library for Android: http://KetaiProject.org

* *

<

p>Ketai Camera Features: *

*
• Interface for built-in camera
*
• TODO: fix HACK of camera registration that currently exceptions in setup() at the moment.
*

• Updated: 2012-10-21 Daniel Sauter/j.duran

*/

import ketai.camera.*;

KetaiCamera video;

Boolean shoot = false;

void setup() {

size(640, 480, P2D);

orientation(LANDSCAPE); video = new KetaiCamera(this, 640,480, 30);

println("camerasId" + video.list());

video.setCameraID(0);

video.setSaveDirectory("/storage/sdcard0/Movies/");

video.setPhotoSize(1280,720);

video.autoSettings();

}

void onCameraPreviewEvent() {

video.read();

}

void draw() {

video.start();

background(0);

if(second()%10 == 0) { shoot = true; }

if (shoot) { video.savePhoto("foto_teste.jpg");

}

}

void onSavePhotoEvent( String filename) {

video.addToMediaLibrary(filename); println("ok"); shoot = false;

}`

ERROR: Calculated camera parameters as (w,h,fps):640,480,30 Face detection supported! Using preview format: 17 Preview size: 640x480,30 Photo size: 1280x720 Calculated photo path: /storage/emulated/0/Pictures/storage/sdcard0/Movies/foto_teste.jpg Calculated photo path: /storage/emulated/0/Pictures/storage/sdcard0/Movies/foto_teste.jpg FATAL EXCEPTION: GLThread 4041 Process: processing.test.timelapse_v4_savphoto_debug, PID: 8494 java.lang.RuntimeException: takePicture failed at android.hardware.Camera.native_takePicture(Native Method) at android.hardware.Camera.takePicture(Camera.java:1266) at android.hardware.Camera.takePicture(Camera.java:1211) at ketai.camera.KetaiCamera.savePhoto(KetaiCamera.java:708) at processing.test.timelapse_v4_savphoto_debug.timeLapse_v4_savPhoto_DEBUG.draw(timeLapse_v4_savPhoto_DEBUG.java:79) at processing.core.PApplet.handleDraw(Unknown Source) at processing.opengl.PGLES$AndroidRenderer.onDrawFrame(Unknown Source) at android.opengl.GLSurfaceView$GLThread.guardedRun(GLSurfaceView.java:1523) at android.opengl.GLSurfaceView$GLThread.run(GLSurfaceView.java:1240)

akenaton

@jrmasiero===

i have tested (P3X) your code as it was && got the same error && same difference with mousePressed(); i think that it is a problem with picture call back. In order to solve that i have done some modify to the code and now it works. Consider also that for other reasons i have changed the save directory path but you can change that easily and go back to your code.

        import ketai.camera.*;
        import android.os.Environment;

        KetaiCamera video;

        Boolean shoot = false;
        String directory;

        void setup() {

        size(640, 480, P2D);

        orientation(LANDSCAPE); video = new KetaiCamera(this, 640,480, 30);

        println("camerasId" + video.list());
        directory = new String(Environment.getExternalStorageDirectory().getAbsolutePath());

        video.setCameraID(0);

        video.setSaveDirectory(directory);

        video.setPhotoSize(1280,720);

        video.autoSettings();

        }

        void onCameraPreviewEvent() {

        video.read();

        }

        void draw() {

        video.start();

        background(0);
        println(shoot);

        if(second()%10 == 0) { shoot = true; }

        if (shoot) { video.savePhoto("foto_teste.jpg");
        noLoop();

        }else{
          loop();
        }

        }

        void onSavePhotoEvent( String filename) {

        //video.addToMediaLibrary(filename); 
        println("ok"); 
        shoot = false;
        loop();

        }

        public void mousePressed(){
          video.savePhoto("foto_teste.jpg");
          println("je sauve=====================");
        }

jrmasiero

And now, we have a working time-lapse app. Thank you. Also, I have learned about loop and noLoop(). Nice!

akenaton

@jrmasiero===

...Yet this loop/noLoop is only a kind of workaround...As i cannot see the ketai src i dont know how to get the callback after the photo has been successfully taken but it is quite sure that this is possible. Working with native android code there are a lot of better solutions like this one with startActivityForResult:::

Intent takePhoto = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
    if (takePhoto.resolveActivity(getPackageManager()) != null) {
        startActivityForResult(takePhoto, REQUEST_IMAGE_CAPTURE);
    }

jrmasiero

Yeah. The native way is always better, but in my case your solution is enough.

Aswinth_Raj

Hi guys, I have another problem in saving the image using ketai lib. I followed the exact procedure that akenaton has suggested but still the camera clicks the photo only when I close the application. For example when I click on the screen I am suppose to save current image from the camera but instead the camera clicks the images only when i exist the application. What could be the reason for it. My code is similar to akenaton.

I am not sure if I should have created a new thread for this question. But If I has to let me know kindly. Thanks in advance

jrmasiero

Can you share your code?