悄摸直播 —— JavaCV实现本机摄像头画面远程直播

推流器

一、功能说明

获取pc端的摄像头流数据 + 展示直播效果 + 推流到rtmp服务器

二、代码实现

/**
     * 推流器
     * @param devicePath   摄像头的地址。可以是摄像头rtsp地址,也可以是设备号码,本机摄像头是0
     * @param outputPath   接收路径
     * @param v_rs         帧率
     * @throws Exception
     * @throws org.bytedeco.javacv.FrameRecorder.Exception
     * @throws InterruptedException
     */
    public static void recordPush(String outputPath,int v_rs) throws Exception, org.bytedeco.javacv.FrameRecorder.Exception, InterruptedException {

        Loader.load(opencv_objdetect.class);

        //创建采集器
        OpenCVFrameGrabber grabber = new OpenCVFrameGrabber(0);  //本地摄像头默认为0

        //开启采集器
        try {
            grabber.start();
        } catch (Exception e) {
            try {
                grabber.restart();  //一次重启尝试
            } catch (Exception e2) {
                throw e;
            }
        }

        OpenCVFrameConverter.ToIplImage converter = new OpenCVFrameConverter.ToIplImage();  //转换器
        Frame grabframe = grabber.grab();  //获取一帧
        IplImage grabbedImage = null;
        if (grabframe!=null) {
            grabbedImage = converter.convert(grabframe); //将这一帧转换为IplImage
        }

        //创建录制器
        FrameRecorder recorder;
        recorder = FrameRecorder.createDefault(outputPath, 1280, 720);   //输出路径,画面高,画面宽
        recorder.setVideoCodec(avcodec.AV_CODEC_ID_H264);  //设置编码格式
        recorder.setFormat("flv");
        recorder.setFrameRate(v_rs);
        recorder.setGopSize(v_rs);

        //开启录制器
        try {
            recorder.start();
        } catch (java.lang.Exception e) {
            System.out.println("recorder开启失败");
            System.out.println(recorder);
            try {
                if (recorder != null) {  //尝试重启录制器
                    recorder.stop();
                    recorder.start();
                }
            } catch (java.lang.Exception e1) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }

        //直播效果展示窗口
        CanvasFrame frame = new CanvasFrame("直播效果",CanvasFrame.getDefaultGamma() / grabber.getGamma());
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setAlwaysOnTop(true);

        //推流
        while(frame.isVisible() && (grabframe=grabber.grab()) != null) {
            frame.showImage(grabframe);   //展示直播效果
            grabbedImage = converter.convert(grabframe);
            Frame rotatedFrame = converter.convert(grabbedImage);

            if (rotatedFrame != null) {
                recorder.record(rotatedFrame);
            }

            Thread.sleep(50);  //50毫秒/帧
        }
    }

三、测试推流器

public static void main(String[] args) throws Exception, org.bytedeco.javacv.FrameRecorder.Exception, InterruptedException {
        //设置rtmp服务器地址
        String outputPath = "rtmp://192.168.1.48:1935/live/stream";

        recordPush(outputPath, 25);
    }

如果出现“直播效果”的swing窗口,并能够播放摄像头画面,则说明推流器成功。

12-13 02:26