微信虚拟视频聊天插件，QQ抖音快手虚拟摄像头工具，替换相机视频流java

下载地址：http://m.pan38.com/download.php?code=DITAOH 提取码：6666

实现包含了虚拟摄像头核心功能，可以捕获真实摄像头视频流，处理后输出到虚拟摄像头设备。代码使用了JavaCV和OpenCV库来处理视频帧，并提供了多种视频特效功能。使用时需要先安装v4l2loopback驱动创建虚拟摄像头设备。

import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.TimeUnit;

public class VirtualCameraManager {
private VirtualCamera[] cameras;
private ScheduledExecutorService executor;

public VirtualCameraManager(int numCameras) {
    cameras = new VirtualCamera[numCameras];
    for (int i = 0; i < numCameras; i++) {
        cameras[i] = new VirtualCamera();
    }
    executor = Executors.newScheduledThreadPool(numCameras);
}

public void startAll() {
    for (int i = 0; i < cameras.length; i++) {
        final int index = i;
        executor.scheduleAtFixedRate(() -> {
            try {
                cameras[index].init();
                cameras[index].process();
            } catch (Exception e) {
                e.printStackTrace();
            }
        }, 0, 1000/30, TimeUnit.MILLISECONDS);
    }
}

public void stopAll() {
    executor.shutdown();
    try {
        for (VirtualCamera cam : cameras) {
            cam.release();
        }
    } catch (Exception e) {
        e.printStackTrace();
    }
}

public static void main(String[] args) {
    VirtualCameraManager manager = new VirtualCameraManager(2);
    Runtime.getRuntime().addShutdownHook(new Thread(manager::stopAll));
    manager.startAll();
}

}

import org.bytedeco.javacv.;
import org.bytedeco.opencv.opencv_core.;
import static org.bytedeco.opencv.global.opencv_core.;
import static org.bytedeco.opencv.global.opencv_imgproc.;
import static org.bytedeco.opencv.global.opencv_imgcodecs.*;

public class VirtualCamera {
private static final int WIDTH = 640;
private static final int HEIGHT = 480;
private static final int FPS = 30;

private FrameGrabber grabber;
private FrameFilter filter;
private FrameRecorder recorder;

public void init() throws Exception {
    // 初始化视频捕获设备
    grabber = FrameGrabber.createDefault(0);
    grabber.setImageWidth(WIDTH);
    grabber.setImageHeight(HEIGHT);
    grabber.start();

    // 初始化视频处理过滤器
    filter = new OpenCVFrameFilter("none", WIDTH, HEIGHT);
    filter.start();

    // 初始化虚拟摄像头输出
    recorder = FrameRecorder.createDefault("v4l2loopback", WIDTH, HEIGHT);
    recorder.setVideoCodec(avcodec.AV_CODEC_ID_RAWVIDEO);
    recorder.setFormat("yuv420p");
    recorder.setFrameRate(FPS);
    recorder.start();
}

public void process() throws Exception {
    Frame frame;
    while ((frame = grabber.grab()) != null) {
        // 处理视频帧
        Frame filteredFrame = filter.filter(frame);

        // 添加虚拟效果
        Mat mat = new OpenCVFrameConverter.ToMat().convert(filteredFrame);
        applyVirtualEffects(mat);

        // 转换回帧格式
        Frame outputFrame = new OpenCVFrameConverter.ToMat().convert(mat);

        // 输出到虚拟摄像头
        recorder.record(outputFrame);
    }
}

private void applyVirtualEffects(Mat frame) {
    // 这里可以添加各种视频特效
    // 示例：添加模糊效果
    GaussianBlur(frame, frame, new Size(15, 15), 0);

    // 示例：添加文字水印
    putText(frame, "Virtual Camera", new Point(50, 50), 
           FONT_HERSHEY_SIMPLEX, 1.0, new Scalar(255, 255, 255, 0));
}

public void release() throws Exception {
    if (grabber != null) grabber.stop();
    if (filter != null) filter.stop();
    if (recorder != null) recorder.stop();
}

public static void main(String[] args) {
    VirtualCamera vcam = new VirtualCamera();
    try {
        vcam.init();
        vcam.process();
    } catch (Exception e) {
        e.printStackTrace();
    } finally {
        try {
            vcam.release();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

}

org.bytedeco.opencv.opencv_core.;
import static org.bytedeco.opencv.global.opencv_core.;
import static org.bytedeco.opencv.global.opencv_imgproc.;
import static org.bytedeco.opencv.global.opencv_video.;

public class VideoEffectUtils {

// 应用美颜效果
public static void applyBeautyFilter(Mat frame) {
    Mat dst = new Mat();
    bilateralFilter(frame, dst, 15, 80, 80);
    dst.copyTo(frame);
}

// 应用背景虚化
public static void applyBackgroundBlur(Mat frame, Rect faceRect) {
    Mat mask = new Mat(frame.size(), CV_8UC1, new Scalar(0));
    rectangle(mask, faceRect, new Scalar(255), -1);

    Mat blurred = new Mat();
    GaussianBlur(frame, blurred, new Size(55, 55), 0);

    blurred.copyTo(frame, mask);
}

// 应用绿幕替换
public static void applyGreenScreen(Mat frame, Mat background) {
    Mat hsv = new Mat();
    cvtColor(frame, hsv, COLOR_BGR2HSV);

    Mat mask = new Mat();
    inRange(hsv, new Scalar(35, 43, 46), new Scalar(77, 255, 255), mask);

    Mat invMask = new Mat();
    bitwise_not(mask, invMask);

    Mat bg = new Mat();
    resize(background, bg, frame.size());

    Mat fg = new Mat();
    frame.copyTo(fg, invMask);

    Mat bgPart = new Mat();
    bg.copyTo(bgPart, mask);

    add(fg, bgPart, frame);
}

// 应用人脸特效
public static void applyFaceEffect(Mat frame, Rect faceRect) {
    if (faceRect.width() > 0 && faceRect.height() > 0) {
        // 在脸上添加特效
        rectangle(frame, faceRect, new Scalar(0, 255, 0), 2);

        // 眼睛特效
        Point leftEye = new Point(
            faceRect.x() + faceRect.width() * 0.3,
            faceRect.y() + faceRect.height() * 0.4
        );
        Point rightEye = new Point(
            faceRect.x() + faceRect.width() * 0.7,
            faceRect.y() + faceRect.height() * 0.4
        );

        circle(frame, leftEye, 10, new Scalar(255, 0, 0), -1);
        circle(frame, rightEye, 10, new Scalar(255, 0, 0), -1);
    }
}

}