# Dynamic get(); method in Ketai library?
**URL:** https://discourse.processing.org/t/dynamic-get-method-in-ketai-library/30899
**Category:** Processing for Android
**Created:** [June 25, 2021, 1:28am UTC](https://discourse.processing.org/t/dynamic-get-method-in-ketai-library/30899 "2021-06-25T01:28:22Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@thorj](https://discourse.processing.org/u/thorj)
#### Post date: [June 25, 2021, 1:28am UTC](https://discourse.processing.org/t/dynamic-get-method-in-ketai-library/30899/1 "2021-06-25T01:28:22Z")
Hello,
I’m new in Processing, and I try to create some funny pixelator app on Android APDE using camera on my Phone. To solve this task I’m using a Ketai library. Problem is when I try to get image from camera using get() method^ I got only one frame as an image, not a video stream from my camera. But I need a realtime video stream from my camera. Who can help me to understand how can I do it. The code is here:
```auto
import ketai.camera.*;
KetaiCamera cam;
color bg = #f1f1f1;
color fg = #111111;
PImage img;
void setup() {
requestPermission("android.permission.WRITE_EXTERNAL_STORAGE", "checkPermission");
size(displayWidth, displayHeight);
orientation(LANDSCAPE);
imageMode(CENTER);
cam = new KetaiCamera(this, displayWidth, displayHeight, 24);
cam.setCameraID(0);
background(bg);
}
void draw() {
background(bg);
fill(fg);
if (mousePressed == true) {
cam.start();
} else {
cam.stop();
}
img = cam.get();
float tileX = map(mouseY, 0, height, 10, 100);
//float tileY = ratio * tileX;
float tileSize = width / tileX;
for (int y = 0; y < img.height; y += tileSize) {
for (int x = 0; x < img.width; x += tileSize) {
color c = img.get(x, y);
float b = map(brightness(c), 0, 255, 1, 0);
pushMatrix();
translate(x, y);
rect(0, 0, b * tileSize, b* tileSize);
popMatrix();
}
}
}
void checkPermission(boolean wasPermissionGranted) {
if (wasPermissionGranted) println("Hooray! I can now write to the local file system!");
else println("Oh no! I was not granted write permission =(");
}
void onCameraPreviewEvent() {
cam.read();
}
// start/stop camera preview by tapping the screen
/*
void mousePressed() {
if (cam.isStarted()) {
cam.stop();
} else cam.start();
}
*/
void keyPressed() {
if (key == CODED) {
if (keyCode == MENU) {
if (cam.isFlashEnabled()) cam.disableFlash();
else cam.enableFlash();
}
}
}
```
Thank you)
---
### Author:  [@paulgoux](https://discourse.processing.org/u/paulgoux)
#### Post date: [June 26, 2021, 8:16am UTC](https://discourse.processing.org/t/dynamic-get-method-in-ketai-library/30899/2 "2021-06-26T08:16:47Z")
simple ketai sketch
> **Summary**
>
> ```auto
> import android.os.Environment;
> import android.os.Build ;
> import android.app.Activity;
> import android.content.Context;
>
> boolean k1 = false;
> int W = 1440, H = 720;
> Permission storage, camera, readStorage;
> PGraphics canvas;
> PShader edges;
> KetaiCamera cam;
>
> //void settings(){
> // //size(W,H,P2D);
> //};
>
> void setup() {
> fullScreen(P2D);
> orientation(LANDSCAPE);
> cam = new KetaiCamera(this, width, height, 60);
> canvas = createGraphics(W, H, P2D);
> //edges = loadShader("edges.glsl");
> storage = new Permission(this, "WRITE_EXTERNAL_STORAGE");
> readStorage = new Permission(this, "READ_EXTERNAL_STORAGE");
> camera = new Permission(this, "CAMERA");
> //cam.start();
> };
>
> void draw() {
> fill(255);
> background(0);
> if (frameCount>10&&!cam.isStarted())cam.start();
> image(cam, 0,0);
> text(frameRate, 50, 100);
> };
>
> void mousePressed() {
> //if (cam.isStarted()){
> // cam.stop();
> //}else cam.start();
>
> if (cam.isFlashEnabled())
> cam.disableFlash();
> else
> cam.enableFlash();
> };
>
> void onCameraPreviewEvent() {
> cam.read();
> };
>
> ```
> **Summary**
>
> ```auto
> class AndroidAcamera {
>
> AndroidAcamera() {
> };
>
> void display() {
> //if(BMS.menus.get(0).items.get(1).toggle==1){
> canvas.beginDraw();
>
> //mult = BMS.Sliders.get(0).value;
> //counter = BMS.Sliders.get(1).value;
> //mult = 1.0;
> //counter = 1.0;
> //edges.set("mult",mult);
> //edges.set("type",counter);
> canvas.shader(edges);
> canvas.fill(0);
> canvas.rect(0, 0, width, height);
> canvas.imageMode(CENTER);
> canvas.image(cam, width/2, height/2+20);
> canvas.imageMode(CORNER);
> canvas.fill(0);
> canvas.rect(0, 0, width, 20);
> canvas.endDraw();
> //}
> };
>
> void start(){
> if (frameCount>10&&!cam.isStarted())cam.start();
> };
> };
>
> ```
> **Summary**
>
> ```auto
> public class Permission{
>
> PApplet parent;
> String p;
>
> public boolean requestedPortraitImage = false;
>
> public Permission(PApplet pParent,String permissionName) {
> parent = pParent;
> p = permissionName;
> parent.requestPermission("android.permission."+permissionName, "onPermissionResult", this);
> println(permissionName);
> };
>
> public void onPermissionResult(boolean granted) {
> if (!granted) {
> PApplet.println("User did not grant ",p, "permission. Camera is disabled.");
> }
> };
>
> };
>
> ```
---
### Author:  [@thorj](https://discourse.processing.org/u/thorj)
#### Post date: [June 26, 2021, 12:03pm UTC](https://discourse.processing.org/t/dynamic-get-method-in-ketai-library/30899/3 "2021-06-26T12:03:37Z")
Hello, please can you explain your solution in few words
---
### Author:  [@paulgoux](https://discourse.processing.org/u/paulgoux)
#### Post date: [June 26, 2021, 3:39pm UTC](https://discourse.processing.org/t/dynamic-get-method-in-ketai-library/30899/4 "2021-06-26T15:39:40Z")
Just take it one line at a time my friend.