xuggler IPacket转换 BufferedImage

根据提供的引用内容，xuggler可以将IPacket转换为BufferedImage。下面是一个将IPacket转换为BufferedImage的例子：

// 首先，我们需要创建一个IplImage对象
IplImage iplImage = IplImage.create(width, height, IPL_DEPTH_8U, 1);

// 然后，我们需要从IPacket中解码视频
int bytesDecoded = videoCoder.decodeVideo(iplImage, packet, 0);

// 接下来，我们需要将IplImage对象转换为BufferedImage对象
BufferedImage bufferedImage = iplToBufImgData(iplImage, null);

其中，`iplToBufImgData`是一个将IplImage对象转换为BufferedImage对象的方法，具体实现如下：

public static BufferedImage iplToBufImgData(IplImage ipl, BufferedImage image) {
    OpenCVFrameConverter.ToIplImage grabberConverter = new OpenCVFrameConverter.ToIplImage();
    Java2DFrameConverter paintConverter = new Java2DFrameConverter();    Frame frame = grabberConverter.convert(ipl);
    return paintConverter.getBufferedImage(frame, 1);
}

完整的代码如下：

import java.awt.image.BufferedImage;
import com.xuggle.xuggler.IPacket;
import com.xuggle.xuggler.IPixelFormat;
import com.xuggle.xuggler.IStreamCoder;
import com.xuggle.xuggler.IVideoPicture;
import com.xuggle.xuggler.Utils;
import com.xuggle.xuggler.video.ConverterFactory;
import com.xuggle.xuggler.video.IConverter;
import static com.xuggle.xuggler.Global.DEFAULT_TIME_UNIT;
import static com.xuggle.xuggler.Global.NO_PTS;
import static com.xuggle.xuggler.Global.DEFAULT_PTS_PER_SECOND;

public class PacketToImage {

    public static BufferedImage packetToImage(IPacket packet, IStreamCoder videoCoder) {
        // 创建一个IVideoPicture对象
        IVideoPicture picture = IVideoPicture.make(
                videoCoder.getPixelType(),
                videoCoder.getWidth(),
                videoCoder.getHeight());

        // 解码视频
        int bytesDecoded = videoCoder.decodeVideo(picture, packet, 0);
        if (bytesDecoded < 0) {
            throw new RuntimeException("got error decoding video in: " + packet);
        }

        // 如果IVideoPicture对象不完整，则返回null
        if (picture.isComplete()) {
            // 将IVideoPicture对象转换为BufferedImage对象
            return Utils.videoPictureToImage(picture);
        }

        return null;
    }

    public static BufferedImage iplToBufImgData(IplImage ipl, BufferedImage image) {
        OpenCVFrameConverter.ToIplImage grabberConverter = new OpenCVFrameConverter.ToIplImage();
        Java2DFrameConverter paintConverter = new Java2DFrameConverter();
        Frame frame = grabberConverter.convert(ipl);
        return paintConverter.getBufferedImage(frame, 1);
    }

    public static void main(String[] args) {
        // 创建一个IPacket对象
        IPacket packet = IPacket.make();

        // 创建一个IStreamCoder对象
        IStreamCoder videoCoder = IStreamCoder.make();

        // 设置IPacket对象的数据
        packet.setData(data, 0, data.length);

        // 设置IPacket对象的时间戳
        long timeStamp = packet.getTimeStamp();
        if (timeStamp != NO_PTS) {
            packet.setTimeStamp(timeStamp);
        } else {
            packet.setTimeStamp(0);
        }

        // 设置IPacket对象的持续时间
        long duration = packet.getDuration();
        if (duration != NO_PTS) {
            packet.setDuration(duration);
        } else {
            packet.setDuration(DEFAULT_TIME_UNIT.convert(1, DEFAULT_TIME_UNIT));
        }

        // 设置IPacket对象的时间基准
        if (packet.getTimeBase() != null) {
            videoCoder.setTimeBase(packet.getTimeBase());
        } else {
            videoCoder.setTimeBase(DEFAULT_TIME_UNIT.divide(1, DEFAULT_PTS_PER_SECOND));
        }

        // 设置IStreamCoder对象的像素格式
        videoCoder.setPixelType(IPixelFormat.Type.YUV420P);

        // 设置IStreamCoder对象的宽度和高度
        videoCoder.setWidth(width);
        videoCoder.setHeight(height);

        // 设置IStreamCoder对象的时间基准
        videoCoder.setTimeBase(DEFAULT_TIME_UNIT.divide(1, DEFAULT_PTS_PER_SECOND));

        // 打开IStreamCoder对象
        videoCoder.open();

        // 将IPacket对象转换为BufferedImage对象
        BufferedImage bufferedImage = packetToImage(packet, videoCoder);

        // 将BufferedImage对象转换为IplImage对象
        IplImage iplImage = BufImgToIplData(null, bufferedImage);
    }
}

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