从无线IP摄像头到Android手机的视频直播

Question

在这里，我必须获得实时视频流从一个无线Ip摄像头到安卓手机使用protocol.Camera连接到无线路由器和手机也有相同的wifi network.Now，我需要实现从摄像头的实时视频流。

为了达到这个目的，我该怎么办？这是me.How的新概念，通过编程连接安卓手机和摄像头，并获得实时streaming.Any帮助将不胜感激。

Answer 1

你可以从你的Ip Cam到你的PC上访问实时图像源，我的是

String URL = "http://192.168.1.8/image/jpeg.cgi";

或者类似的东西。你应该检查你的设备，如果它包括在内。然后，您可以下载该图像并将其放到图像视图中。不是实际的图像文件，而是它的图形细节。您可以在MJpegInputStream中搜索它，以下是它的示例代码

public class MjpegInputStream extends DataInputStream {
private final byte[] SOI_MARKER = { (byte) 0xFF, (byte) 0xD8 };
private final byte[] EOF_MARKER = { (byte) 0xFF, (byte) 0xD9 };
private final String CONTENT_LENGTH = "Content-Length";
private final static int HEADER_MAX_LENGTH = 100;
private final static int FRAME_MAX_LENGTH = 40000 + HEADER_MAX_LENGTH;
private int mContentLength = -1;

public static MjpegInputStream read(Context context,String url) {
    HttpResponse res;
    MyHttpClient httpclient = new MyHttpClient( context );     
    try {
        res = httpclient.execute(new HttpGet(URI.create(url)));
        return new MjpegInputStream(res.getEntity().getContent());              
    } catch (ClientProtocolException e) {
    } catch (IOException e) {}
    return null;
}

public MjpegInputStream(InputStream in) { super(new BufferedInputStream(in, FRAME_MAX_LENGTH)); }

private int getEndOfSeqeunce(DataInputStream in, byte[] sequence) throws IOException {
    int seqIndex = 0;
    byte c;
    for(int i=0; i < FRAME_MAX_LENGTH; i++) {
        c = (byte) in.readUnsignedByte();
        if(c == sequence[seqIndex]) {
            seqIndex++;
            if(seqIndex == sequence.length) return i + 1;
        } else seqIndex = 0;
    }
    return -1;
}

private int getStartOfSequence(DataInputStream in, byte[] sequence) throws IOException {
    int end = getEndOfSeqeunce(in, sequence);
    return (end < 0) ? (-1) : (end - sequence.length);
}

private int parseContentLength(byte[] headerBytes) throws IOException, NumberFormatException {
    ByteArrayInputStream headerIn = new ByteArrayInputStream(headerBytes);
    Properties props = new Properties();
    props.load(headerIn);
    return Integer.parseInt(props.getProperty(CONTENT_LENGTH));
}   

public Bitmap readMjpegFrame() throws IOException {
    mark(FRAME_MAX_LENGTH);
    int headerLen = getStartOfSequence(this, SOI_MARKER);
    reset();
    byte[] header = new byte[headerLen];
    readFully(header);
    try {
        mContentLength = parseContentLength(header);
    } catch (NumberFormatException nfe) { 
        mContentLength = getEndOfSeqeunce(this, EOF_MARKER); 
    }
    reset();
    byte[] frameData = new byte[mContentLength];
    skipBytes(headerLen);
    readFully(frameData);
    return BitmapFactory.decodeStream(new ByteArrayInputStream(frameData));
}

您可以查看有关MJpegInput流、here和here的更多信息

希望它是有帮助的，愉快的编码。