安卓环境onvif 协议读取视频流并提取每一帧图像的代码

以下是一个简单的示例代码，用于从 ONVIF 设备读取视频流并提取每一帧图像：

import javax.xml.soap.SOAPException;
import javax.xml.ws.soap.SOAPFaultException;

import org.onvif.ver10.schema.VideoEncoderConfiguration;
import org.onvif.ver10.schema.VideoResolution;
import org.onvif.ver10.schema.VideoSource;
import org.onvif.ver10.schema.VideoSourceConfiguration;

import com.sun.xml.ws.client.ClientTransportException;

import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.image.BufferedImage;
import java.io.*;
import java.net.ConnectException;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import javax.imageio.ImageIO;
import javax.swing.JFrame;
import javax.swing.JPanel;

public class ONVIFExample extends JPanel {
    private static final long serialVersionUID = 1L;

    private static final String MEDIA_PROFILE_TOKEN = "MediaProfile000";
    private static final String SERVICE_URI = "http://192.168.1.1/onvif/device_service";

    private static final String USER = "admin";
    private static final String PASSWORD = "admin";

    private BufferedImage currentImage = null;

    public ONVIFExample() {
        super();
    }

    @Override
    protected void paintComponent(Graphics g) {
        super.paintComponent(g);
        if (currentImage != null) {
            g.drawImage(currentImage, 0, 0, this);
        }
    }

    public void readStream() throws Exception {
        String videoUrl = getVideoUrl(SERVICE_URI, USER, PASSWORD);

        if (videoUrl == null) {
            throw new Exception("Failed to get video URL");
        }

        String[] urlParts = videoUrl.split(":");

        String host = urlParts[0];
        int port = Integer.parseInt(urlParts[1]);

        InputStream inputStream = null;
        ByteArrayOutputStream byteArrayOutputStream = null;
        try {
            URL url = new URL(videoUrl);
            HttpURLConnection httpConn = (HttpURLConnection) url.openConnection();
            httpConn.setRequestProperty("Authorization", "Basic " + getEncodedAuth(USER, PASSWORD));

            inputStream = httpConn.getInputStream();
            byteArrayOutputStream = new ByteArrayOutputStream();

            byte[] chunk = new byte[4096];
            int bytesRead;
            while ((bytesRead = inputStream.read(chunk)) > 0) {
                byteArrayOutputStream.write(chunk, 0, bytesRead);

                if (byteArrayOutputStream.size() > 1024 * 1024) {
                    currentImage = getBufferedImage(byteArrayOutputStream.toByteArray());

                    byteArrayOutputStream.reset();
                    repaint();
                }
            }
        } catch (MalformedURLException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            if (inputStream != null) {
                try {
                    inputStream.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            if (byteArrayOutputStream != null) {
                try {
                    byteArrayOutputStream.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
    }

    private static String getVideoUrl(String serviceUrl, String user, String pass) {
        String mediaUrl = null;

        try {
            DeviceService deviceService = new DeviceService(serviceUrl, user, pass);

            VideoEncoderConfiguration encoderConfiguration = deviceService.getVideoEncoderConfiguration(MEDIA_PROFILE_TOKEN);
            VideoSourceConfiguration sourceConfiguration = deviceService.getVideoSourceConfiguration(encoderConfiguration.getSourceToken());
            VideoSource videoSource = deviceService.getVideoSource(sourceConfiguration.getSourceToken());

            VideoResolution resolution = encoderConfiguration.getResolution();
            Dimension dimension = new Dimension(resolution.getWidth(), resolution.getHeight());

            mediaUrl = deviceService.getSnapshotUri(dimension.width, dimension.height);
        } catch (SOAPFaultException e) {
            e.printStackTrace();
        } catch (ConnectException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } catch (SOAPException e) {
            e.printStackTrace();
        }

        return mediaUrl;
    }

    private static String getEncodedAuth(String user, String pass) {
        String authStr = user + ":" + pass;
        String authEncoded = javax.xml.bind.DatatypeConverter.printBase64Binary(authStr.getBytes());
        return authEncoded;
    }

    private static BufferedImage getBufferedImage(byte[] imageData) {
        BufferedImage bufferedImage = null;

        try {
            InputStream inputStream = new ByteArrayInputStream(imageData);
            bufferedImage = ImageIO.read(inputStream);
        } catch (IOException e) {
            e.printStackTrace();
        }

        return bufferedImage;
    }

    public static void main(String[] args) {
        JFrame frame = new JFrame("ONVIF Example");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        ONVIFExample onvifExample = new ONVIFExample();
        frame.add(onvifExample);
        frame.setSize(640, 480);
        frame.setVisible(true);

        try {
            onvifExample.readStream();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

这个示例代码使用了 ONVIF 的 Java 实现，它可以帮助你通过 ONVIF 协议从相应的设备获取视频流。在获得视频流之后，代码会将每一帧图像转换为 BufferedImage，并在 JPanel 上绘制出来。你可以根据你的需求修改代码以实现更多功能。