Java IPacket.getStreamIndex方法代码示例

import com.xuggle.xuggler.IPacket; //导入方法依赖的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; //导入方法依赖的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; //导入方法依赖的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; //导入方法依赖的package包/类
/**
 * Determines if a packet is a video packet.
 *
 * @param packet the packet
 * @return true if packet is in the video stream
 */
private boolean isVideoPacket(IPacket packet) {
if (packet.getStreamIndex() == streamIndex) {
	return true;
} 
	return false;
}
 

import com.xuggle.xuggler.IPacket; //导入方法依赖的package包/类
public Object decodePacket(IPacket packet) {

        LOG.debug("decodePacket");

        if (streamTypes[packet.getStreamIndex()] == ICodec.Type.CODEC_TYPE_VIDEO)
            return decodeVideoPacket(packet);
        if (streamTypes[packet.getStreamIndex()] == ICodec.Type.CODEC_TYPE_AUDIO)
            return decodeAudioPacket(packet);

        return null;

    }
 

import com.xuggle.xuggler.IPacket; //导入方法依赖的package包/类
/**
  * Gets the frame number for a specified packet.
  *
  * @param packet the packet
  * @return the frame number, or -2 if not a video packet
  */
private int getFrameNumber(IPacket packet) {
	if (packet.getStreamIndex() != streamIndex)
		return -2;
	return getFrameNumber(packet.getTimeStamp());
}