悄摸直播(一)—— 推流器的实现(获取笔记本摄像头画面,转流推流到rtmp服务器)

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。

原文地址:https://www.cnblogs.com/scywkl/p/12092428.html