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Add screen capture driver
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‎webcam-capture-drivers/driver-screencapture/pom.xml‎

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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<parent>
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<groupId>com.github.sarxos</groupId>
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<artifactId>webcam-capture-drivers</artifactId>
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<version>0.3.12-SNAPSHOT</version>
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</parent>
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<artifactId>webcam-capture-driver-screencapture</artifactId>
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<packaging>jar</packaging>
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<name>Webcam Capture - Screen Capture Driver</name>
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<description>Webcam Capture driver for capturing images from screen devices</description>
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<dependencies>
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<dependency>
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<groupId>com.github.sarxos</groupId>
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<artifactId>webcam-capture</artifactId>
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<version>${project.version}</version>
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</dependency>
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<dependency>
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<groupId>ch.qos.logback</groupId>
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<artifactId>logback-classic</artifactId>
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<scope>provided</scope>
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</dependency>
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<dependency>
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<groupId>junit</groupId>
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<artifactId>junit</artifactId>
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<scope>test</scope>
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</dependency>
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</dependencies>
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<build>
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<plugins>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-assembly-plugin</artifactId>
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</plugin>
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</plugins>
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</build>
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</project>

‎webcam-capture-drivers/driver-screencapture/src/example/java/WebcamPanelExample.java‎

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import java.awt.Dimension;
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import java.awt.FlowLayout;
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import javax.swing.JFrame;
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import com.github.sarxos.webcam.Webcam;
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import com.github.sarxos.webcam.WebcamPanel;
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import com.github.sarxos.webcam.WebcamPanel.DrawMode;
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import com.github.sarxos.webcam.ds.gstreamer.ScreenCaptureDriver;
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public class WebcamPanelExample {
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static {
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Webcam.setDriver(new ScreenCaptureDriver());
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}
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public static void main(String[] args) {
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JFrame window = new JFrame("aaa");
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window.setResizable(true);
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window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
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window.getContentPane().setLayout(new FlowLayout());
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for (Webcam webcam : Webcam.getWebcams()) {
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WebcamPanel panel = new WebcamPanel(webcam);
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panel.setFPSDisplayed(true);
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panel.setDrawMode(DrawMode.FIT);
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panel.setImageSizeDisplayed(true);
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panel.setPreferredSize(new Dimension(300, 200));
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window.getContentPane().add(panel);
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}
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window.pack();
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window.setVisible(true);
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}
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}

‎webcam-capture-drivers/driver-screencapture/src/example/java/WebcamPanelSubViewExample.java‎

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import java.awt.Color;
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import java.awt.Dimension;
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import java.awt.Graphics2D;
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import java.awt.image.BufferedImage;
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import javax.swing.JFrame;
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import com.github.sarxos.webcam.Webcam;
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import com.github.sarxos.webcam.WebcamCompositeDriver;
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import com.github.sarxos.webcam.WebcamPanel;
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import com.github.sarxos.webcam.WebcamPanel.DrawMode;
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import com.github.sarxos.webcam.WebcamPanel.Painter;
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import com.github.sarxos.webcam.WebcamResolution;
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import com.github.sarxos.webcam.ds.buildin.WebcamDefaultDriver;
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import com.github.sarxos.webcam.ds.gstreamer.ScreenCaptureDriver;
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public class WebcamPanelSubViewExample {
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static {
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Webcam.setDriver(new WebcamCompositeDriver(new WebcamDefaultDriver(), new ScreenCaptureDriver()));
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}
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private final Dimension size = WebcamResolution.QQVGA.getSize();
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private final Webcam screen = Webcam.getWebcamByName(":0.1");
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private final WebcamPanel panel = new WebcamPanel(screen);
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private final Painter dp = panel.getDefaultPainter();
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private final JFrame window = new JFrame("Test");
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private final class SubViewPainter implements Painter {
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private final Webcam webcam = Webcam.getDefault();
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private final int x = 619;
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private final int y = 437;
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private final int w = size.width;
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private final int h = size.height;
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public SubViewPainter() {
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webcam.setViewSize(size);
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webcam.open();
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}
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@Override
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public void paintImage(WebcamPanel owner, BufferedImage image, Graphics2D g2) {
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dp.paintImage(owner, image, g2);
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g2.setColor(Color.BLACK);
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g2.drawRect(x - 1, y - 1, w + 1, h + 1);
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g2.drawImage(webcam.getImage(), x, y, w, h, null);
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}
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@Override
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public void paintPanel(WebcamPanel panel, Graphics2D g2) {
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dp.paintPanel(panel, g2);
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};
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};
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public WebcamPanelSubViewExample() {
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screen.open(true);
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panel.setFPSDisplayed(true);
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panel.setDrawMode(DrawMode.FIT);
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panel.setImageSizeDisplayed(true);
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panel.setFPSDisplayed(true);
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panel.setPainter(new SubViewPainter());
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panel.setPreferredSize(new Dimension(800, 600));
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window.setResizable(true);
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window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
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window.setContentPane(panel);
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window.pack();
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window.setVisible(true);
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}
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public static void main(String[] args) {
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new WebcamPanelSubViewExample();
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}
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}

‎webcam-capture-drivers/driver-screencapture/src/example/resources/logback.xml‎

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<configuration scan="true" scanPeriod="30 seconds">
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<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
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<layout class="ch.qos.logback.classic.PatternLayout">
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<Pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</Pattern>
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</layout>
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</appender>
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<root level="debug">
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<appender-ref ref="STDOUT" />
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</root>
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</configuration>

‎webcam-capture-drivers/driver-screencapture/src/main/java/com/github/sarxos/webcam/ds/gstreamer/ScreenCaptureDevice.java‎

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package com.github.sarxos.webcam.ds.gstreamer;
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import java.awt.AWTException;
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import java.awt.Dimension;
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import java.awt.DisplayMode;
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import java.awt.GraphicsConfiguration;
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import java.awt.GraphicsDevice;
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import java.awt.Rectangle;
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import java.awt.Robot;
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import java.awt.image.BufferedImage;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import com.github.sarxos.webcam.WebcamDevice;
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import com.github.sarxos.webcam.WebcamException;
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public class ScreenCaptureDevice implements WebcamDevice {
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private static final Logger LOG = LoggerFactory.getLogger(ScreenCaptureDevice.class);
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private final GraphicsDevice device;
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private final DisplayMode mode;
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private final Dimension resolution;
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private final Robot robot;
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private boolean open = false;
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public ScreenCaptureDevice(final GraphicsDevice device) {
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this.device = device;
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this.mode = device.getDisplayMode();
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this.resolution = new Dimension(mode.getWidth(), mode.getHeight());
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try {
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this.robot = new Robot(device);
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} catch (AWTException e) {
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throw new WebcamException("Unable to create robot", e);
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}
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LOG.trace("Screen device {} with resolution {} has been created", getName(), getResolution());
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}
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@Override
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public String getName() {
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return device.getIDstring();
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}
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@Override
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public Dimension[] getResolutions() {
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return new Dimension[] { resolution };
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}
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@Override
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public Dimension getResolution() {
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return resolution;
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}
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@Override
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public void setResolution(Dimension size) {
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// do nothings, screen has only one resolution which is already set
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}
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@Override
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public BufferedImage getImage() {
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final GraphicsConfiguration gc = device.getDefaultConfiguration();
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final Rectangle bounds = gc.getBounds();
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return robot.createScreenCapture(bounds);
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}
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@Override
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public void open() {
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LOG.debug("Opening screen device {} with resolution {}", getName(), getResolution());
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open = true;
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}
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@Override
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public void close() {
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open = false;
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}
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@Override
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public void dispose() {
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// do nothing, no need to dispose anything here
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}
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@Override
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public boolean isOpen() {
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return open;
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}
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}

‎webcam-capture-drivers/driver-screencapture/src/main/java/com/github/sarxos/webcam/ds/gstreamer/ScreenCaptureDriver.java‎

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package com.github.sarxos.webcam.ds.gstreamer;
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import java.awt.GraphicsDevice;
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import java.awt.GraphicsEnvironment;
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import java.util.ArrayList;
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import java.util.List;
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import com.github.sarxos.webcam.WebcamDevice;
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import com.github.sarxos.webcam.WebcamDriver;
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public class ScreenCaptureDriver implements WebcamDriver {
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@Override
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public List<WebcamDevice> getDevices() {
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final GraphicsEnvironment g = GraphicsEnvironment.getLocalGraphicsEnvironment();
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final GraphicsDevice[] devices = g.getScreenDevices();
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final List<WebcamDevice> list = new ArrayList<>();
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for (final GraphicsDevice device : devices) {
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list.add(new ScreenCaptureDevice(device));
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}
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return list;
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}
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@Override
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public boolean isThreadSafe() {
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return false;
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}
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}

‎webcam-capture-drivers/pom.xml‎

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<module>driver-jmf</module>
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<module>driver-lti-civil</module>
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<module>driver-openimaj</module>
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<module>driver-screencapture</module>
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<module>driver-v4l4j</module>
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<module>driver-vlcj</module>
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</modules>

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