VideoBuffer

VideoBuffer.sketch

ofVideoGrabber grabber;

ofPixels filteredPixels;
ofTexture filteredTexture;

std::vector<ofTexture> buffer;
int numFramesInBuffer;

ofEasyCam cam;

void setup() {
    ofEnableDepthTest();
    ofSetWindowShape(1280, 720);
    grabber.initGrabber(1280, 720);	
    filteredPixels.allocate(1280, 720, OF_IMAGE_COLOR_ALPHA);
    filteredTexture.allocate(1280, 720, OF_IMAGE_COLOR_ALPHA);
    
    numFramesInBuffer = 30;
}


void update() {
    grabber.update();
    
    if (grabber.isFrameNew()) 
    {
        ofPixels& grabberPixels = grabber.getPixelsRef();
        ofTexture tex;
        tex.loadData(grabberPixels);
        buffer.push_back(tex);
        
        while (buffer.size() > numFramesInBuffer)
        {
            buffer.erase(buffer.begin());   
        }
        
        // filteredPixels.clear();
        
        // ofPixels& grabberPixels = grabber.getPixelsRef();
        
        // for (int x = 0; x < grabber.getWidth(); x++)
        // {
        //     for (int y = 0; y < grabber.getHeight(); y++)
        //     {
        //         ofColor grabberPixelColor = grabberPixels.getColor(x, y);
                
        //         if (grabberPixelColor.getBrightness() > 127)
        //         {
        //             filteredPixels.setColor(x, y, grabberPixelColor);
        //         }
        //     }
        // }
        
        // filteredTexture.loadData(grabberPixels);
    }
}

void draw() {
    cam.begin();
    
    ofPushMatrix();
    ofTranslate(-grabber.getWidth() / 2, -grabber.getHeight() / 2);
    
	// grabber.draw(0, 0);
    
    for (int i = 0; i < buffer.size(); i++)
    {
        buffer[i].draw(0, 0, i * 100);
    }
    
    ofPopMatrix();

    cam.end();
}