Java IPacket类代码示例

import com.xuggle.xuggler.IPacket; //导入依赖的package包/类
/**
 * Adds an image as a frame to the current video
 * @param image
 */
private void addImage(BufferedImage image){
	IPacket packet = IPacket.make();
	IConverter converter = ConverterFactory.createConverter(image, coder.getPixelType());
	IVideoPicture frame = converter.toPicture(image, Math.round(frameTime));
	
	if (coder.encodeVideo(packet, frame, 0) < 0) {
		throw new RuntimeException("Unable to encode video.");
	}
	
	if (packet.isComplete()) {
		if (writer.writePacket(packet) < 0) {
			throw new RuntimeException("Could not write packet to container.");
		}
	}
       this.frameTime += 1000000f/frameRate;
       frameCount++;
}
 

import com.xuggle.xuggler.IPacket; //导入依赖的package包/类
public AVPacket readPacket() {
    IPacket packet = IPacket.make();
    XugglerPacket xpacket = null;

    if (this.container.readNextPacket(packet) >= 0) {
        printPacketInfo(packet);

        xpacket = new XugglerPacket(packet,
                streamTypes[packet.getStreamIndex()]);
    } else
        finished = true;

    if (xpacket != null) {
        // calc position of the packet relative to the whole video
        long pos = xpacket.getPosition() - decompressor.getHeaderSize()
                + getAdjustedStart();
        xpacket.setPosition(pos);
        xpacket.setFrameNo(xpacket.getFrameNo() + getFrameOffset());
        LOG.debug("readPacket, frame no " + xpacket.getFrameNo());
    }
    return xpacket;
}
 

import com.xuggle.xuggler.IPacket; //导入依赖的package包/类
public void encode( AVPacket packet ) {
    IPacket ipacket = (IPacket)packet.getPacket();
    int streamNum = ipacket.getStreamIndex();
    ipacket = IPacket.make();
    printPacketInfo(ipacket);
    IVideoPicture picture = (IVideoPicture)packet.getDecodedObject();
    if( picture == null ) {
        LOG.debug("Picture is null" );
        return;
    } else
    {
        printPictureInfo(picture);
    }
    if( streamNum < outStreams.length ) {
        LOG.debug( "Coder Bitrate: " + outStreams[streamNum].getStreamCoder().getBitRate());
        LOG.debug( "Coder Name: " + outStreams[streamNum].getStreamCoder().getCodec().getName());
        
        int retVal = outStreams[streamNum].getStreamCoder().encodeVideo( ipacket, picture, -1);
        LOG.debug("encoding, retval = " + retVal );
        if( ipacket.isComplete() )
        {
            //packet = new XugglerPacket( ipacket, ICodec.Type.CODEC_TYPE_VIDEO );
            packet.setPacket( ipacket );
        }
    }
}
 

import com.xuggle.xuggler.IPacket; //导入依赖的package包/类
public XugglerPacket(IPacket packet, ICodec.Type type) {
    this.packet = packet;
    setPosition(packet.getPosition());
    setFrameNo(packet.getPts());
    switch (type) {
    case CODEC_TYPE_ATTACHMENT:
        this.streamType = AVPacket.StreamType.UNKNOWN;
        break;
    case CODEC_TYPE_AUDIO:
        this.streamType = AVPacket.StreamType.AUDIO;
        break;
    case CODEC_TYPE_DATA:
        this.streamType = AVPacket.StreamType.UNKNOWN;
        break;
    case CODEC_TYPE_SUBTITLE:
        this.streamType = AVPacket.StreamType.UNKNOWN;
        break;
    case CODEC_TYPE_UNKNOWN:
        this.streamType = AVPacket.StreamType.UNKNOWN;
        break;
    case CODEC_TYPE_VIDEO:
        this.streamType = AVPacket.StreamType.VIDEO;
        break;
    }
}
 

import com.xuggle.xuggler.IPacket; //导入依赖的package包/类
/**
  * Encodes an image and writes it to the output stream.
  * 
  * @param image the image to encode (must be BufferedImage.TYPE_3BYTE_BGR)
  * @param pixelType the pixel type
  * @param timeStamp the time stamp in microseconds
  * @throws IOException
  */
private boolean encodeImage(BufferedImage image, IPixelFormat.Type pixelType, long timeStamp) 
		throws IOException {
	// convert image to xuggle picture
	IVideoPicture picture = getPicture(image, pixelType, timeStamp);
	if (picture==null)
		throw new RuntimeException("could not convert to picture"); //$NON-NLS-1$
	// make a packet
	IPacket packet = IPacket.make();
	if (outStreamCoder.encodeVideo(packet, picture, 0) < 0) {
		throw new RuntimeException("could not encode video"); //$NON-NLS-1$
	}
	if (packet.isComplete()) {
		boolean forceInterleave = true;
		if (outContainer.writePacket(packet, forceInterleave) < 0) {
			throw new RuntimeException("could not save packet to container"); //$NON-NLS-1$
		}
		return true;
	}
	return false;		
}
 

import com.xuggle.xuggler.IPacket; //导入依赖的package包/类
/**
  * Loads a video packet into the current Xuggle picture.
  *
  * @param packet the packet
  * @return true if successfully loaded
  */
private boolean loadPacket(IPacket packet) {
	int offset = 0;
	int size = packet.getSize();
   while(offset < size) {
     // decode the packet into the picture
     int bytesDecoded = videoCoder.decodeVideo(picture, packet, offset);
     // check for errors
     if (bytesDecoded < 0)
       return false;
     
     offset += bytesDecoded;
     if (picture.isComplete()) {
     	return true;
     }
   }
   return true;
}
 

import com.xuggle.xuggler.IPacket; //导入依赖的package包/类
public void run() {
	while (doStream) {
		IVideoPicture frame = frames.poll();
		if (frame != null) {
			// mark as keyframe
			//frame.setKeyFrame(i % keyFrameInterval == 0);
			//frame.setQuality(0);
			IPacket packet = IPacket.make();
			try {
				coder.encodeVideo(packet, frame, 0);
				if (packet.isComplete()) {
					container.writePacket(packet);
				}	
			} finally {
				frame.delete();
				if (packet != null) {
					packet.delete();
				}
			}
		} else {
			try {
				Thread.sleep(16L);
			} catch (InterruptedException e) {
			}
		}
	}
	System.out.println("Frame worker exit");
}
 

import com.xuggle.xuggler.IPacket; //导入依赖的package包/类
/**
 * Loads the first frame of the given video and then seeks back to the beginning of the stream.
 * @param container the video container
 * @param videoCoder the video stream coder
 * @return BufferedImage
 * @throws MediaException thrown if an error occurs during decoding
 */
private BufferedImage loadFirstFrame(IContainer container, IStreamCoder videoCoder) throws MediaException {
	// walk through each packet of the container format
	IPacket packet = IPacket.make();
	while (container.readNextPacket(packet) >= 0) {
		// make sure the packet belongs to the stream we care about
		if (packet.getStreamIndex() == videoCoder.getStream().getIndex()) {
			// create a new picture for the video data to be stored in
			IVideoPicture picture = IVideoPicture.make(videoCoder.getPixelType(), videoCoder.getWidth(), videoCoder.getHeight());
			int offset = 0;
			// decode the video
			while (offset < packet.getSize()) {
				int bytesDecoded = videoCoder.decodeVideo(picture, packet, offset);
				if (bytesDecoded < 0) {
					LOGGER.error("No bytes found in container.");
					throw new MediaException();
				}
				offset += bytesDecoded;

				// make sure that we have a full picture from the video first
				if (picture.isComplete()) {
					// convert the picture to an Java buffered image
					BufferedImage target = new BufferedImage(picture.getWidth(), picture.getHeight(), BufferedImage.TYPE_3BYTE_BGR);
					IConverter converter = ConverterFactory.createConverter(target, picture.getPixelType());
					return converter.toImage(picture);
				}
			}
		}
	}
	
	return null;
}
 

import com.xuggle.xuggler.IPacket; //导入依赖的package包/类
/**
 * Initializes the reader thread with the given media.
 * @param container the media container
 * @param videoCoder the media video decoder
 * @param audioCoder the media audio decoder
 * @param audioConversions the flag(s) for any audio conversions to must take place
 */
public void initialize(IContainer container, IStreamCoder videoCoder, IStreamCoder audioCoder, int audioConversions) {
	// assign the local variables
	this.outputWidth = 0;
	this.outputHeight = 0;
	this.videoConversionEnabled = false;
	this.scale = false;
	this.container = container;
	this.videoCoder = videoCoder;
	this.audioCoder = audioCoder;
	this.audioConversions = audioConversions;
	
	// create a packet for reading
	this.packet = IPacket.make();
	
	// create the image converter for the video
	if (videoCoder != null) {
		this.width = this.videoCoder.getWidth();
		this.height = this.videoCoder.getHeight();
		IPixelFormat.Type type = this.videoCoder.getPixelType();
		this.picture = IVideoPicture.make(type, this.width, this.height);
		BufferedImage target = new BufferedImage(this.width, this.height, BufferedImage.TYPE_3BYTE_BGR);
		this.videoConverter = ConverterFactory.createConverter(target, type);
	}
	
	// create a resuable container for the samples
	if (audioCoder != null) {
		this.samples = IAudioSamples.make(1024, this.audioCoder.getChannels());
	}
}
 

import com.xuggle.xuggler.IPacket; //导入依赖的package包/类
public void close(){
	if(writer != null){
		// write last packets
		IPacket packet = IPacket.make();
		do{
			coder.encodeVideo(packet, null, 0);
			if(packet.isComplete()){
				writer.writePacket(packet);
			}
		}while(packet.isComplete());
		writer.flushPackets();
		writer.close();
		writer = null;
		coder = null;
		fileCount++;
		frameCount = 0;
		
		// move video to final location (can be remote!)
		if(location != null) try {
			connector.moveTo(location+currentFile.getName());
			logger.info("Moving video to final location: "+location+currentFile.getName());
			connector.copyFile(currentFile, true);
		} catch (IOException e) {
			logger.error("Unable to move file to final destinaiton: location", e);
		}
	}
}
 

import com.xuggle.xuggler.IPacket; //导入依赖的package包/类
private void printPacketInfo(IPacket packet) {
    String packet_info = "";
    packet_info += "Packet: ";
    packet_info += String.format("position = %d;", packet.getPosition());
    packet_info += String.format("isKey = %s;", packet.isKey());
    packet_info += String.format("stream_index = %d;",
            packet.getStreamIndex());
    packet_info += String.format("size = %d;", packet.getSize());
    LOG.debug(packet_info);
}
 

import com.xuggle.xuggler.IPacket; //导入依赖的package包/类
public boolean writeBufferedImage( BufferedImage image ) {
BufferedImage worksWithXugglerBufferedImage = XugglerPacket.convertToType(
            image, BufferedImage.TYPE_3BYTE_BGR);

    IPacket packet = IPacket.make();
    //IConverter converter = ConverterFactory.createConverter(
            //worksWithXugglerBufferedImage, compressor.);
    return false;
}
 

import com.xuggle.xuggler.IPacket; //导入依赖的package包/类
private void printPacketInfo(IPacket packet) {
    String packet_info = "";
    packet_info += "Packet: ";
    packet_info += String.format("pts = %d;", packet.getPts());
    packet_info += String.format("position = %d;", packet.getPosition());
    packet_info += String.format("isKey = %s;", packet.isKey());
    packet_info += String.format("stream_index = %d;",
            packet.getStreamIndex());
    packet_info += String.format("size = %d;", packet.getSize());
    //System.out.println(packet_info);
    LOG.debug(packet_info);
}
 

import com.xuggle.xuggler.IPacket; //导入依赖的package包/类
@Override
public void setFrameNo(long frame_no) {
    this.frame_no = frame_no;
    // TODO: we should not set Pts and Dts that way. The Coder should calculate the right values.
    if( this.packet != null ) {
     ((IPacket)this.packet).setPts( frame_no );
     ((IPacket)this.packet).setDts( frame_no );
    }
    if( this.decoded_object != null )
        ((IVideoPicture)this.decoded_object).setPts( frame_no * 40000 );
}
 

import com.xuggle.xuggler.IPacket; //导入依赖的package包/类
/**
 * Add new image into video stream.
 */
@Override
public void addImage(final Image image) throws IOException {
    if (!isOpen()) {
        throw new IOException("Current object does not opened yet! Please call #open() method!");
    }

    final BufferedImage worksWithXugglerBufferedImage = convertToType(TypeConvert.toBufferedImage(image),
            BufferedImage.TYPE_3BYTE_BGR);
    final IPacket packet = IPacket.make();

    IConverter converter = null;
    try {
        converter = ConverterFactory.createConverter(worksWithXugglerBufferedImage, IPixelFormat.Type.YUV420P);
    } catch (final UnsupportedOperationException e) {
        throw new IOException(e.getMessage());
    }

    this.totalTimeStamp += this.incrementTimeStamp;
    final IVideoPicture outFrame = converter.toPicture(worksWithXugglerBufferedImage, this.totalTimeStamp);
    outFrame.setQuality(0);
    int retval = this.outStreamCoder.encodeVideo(packet, outFrame, 0);
    if (retval < 0) {
        throw new IOException("Could not encode video!");
    }

    if (packet.isComplete()) {
        retval = this.outContainer.writePacket(packet);
        if (retval < 0) {
            throw new IOException("Could not save packet to container!");
        }
    }
}