Examples with FileChannelWrapper org.jcodec.common.FileChannelWrapper used on opensource projects

Example 11 with FileChannelWrapper

use of org.jcodec.common.FileChannelWrapper in project openolat by klemens.

the class VideoManagerImpl method getFrame.

/**
 * write the the given frame at frameNumber in the frame leaf
 * @param videoResource videoresource
 * @param frameNumber the frameNumber at which the frame should be taken from
 * @param frame the VFSLeaf to write the picked image to
 */
@Override
public boolean getFrame(OLATResource videoResource, int frameNumber, VFSLeaf frame) {
    File videoFile = ((LocalFileImpl) getMasterVideoFile(videoResource)).getBasefile();
    try (RandomAccessFile randomAccessFile = new RandomAccessFile(videoFile, "r")) {
        FileChannel ch = randomAccessFile.getChannel();
        FileChannelWrapper in = new FileChannelWrapper(ch);
        FrameGrab frameGrab = new FrameGrab(in).seekToFrameSloppy(frameNumber);
        OutputStream frameOutputStream = frame.getOutputStream(false);
        BufferedImage bufImg = frameGrab.getFrame();
        ImageIO.write(bufImg, "JPG", frameOutputStream);
        // close everything to prevent resource leaks
        frameOutputStream.close();
        in.close();
        ch.close();
        return true;
    } catch (Exception | AssertionError e) {
        log.error("Could not get frame::" + frameNumber + " for video::" + videoFile.getAbsolutePath(), e);
        return false;
    }
}

Example 12 with FileChannelWrapper

use of org.jcodec.common.FileChannelWrapper in project openolat by klemens.

the class MovieServiceImpl method getFrameCount.

@Override
public long getFrameCount(VFSLeaf media, String suffix) {
    File file = null;
    if (media instanceof VFSCPNamedItem) {
        media = ((VFSCPNamedItem) media).getDelegate();
    }
    if (media instanceof LocalFileImpl) {
        file = ((LocalFileImpl) media).getBasefile();
    }
    if (file == null) {
        return -1;
    }
    if (extensions.contains(suffix)) {
        try (RandomAccessFile accessFile = new RandomAccessFile(file, "r")) {
            FileChannel ch = accessFile.getChannel();
            FileChannelWrapper in = new FileChannelWrapper(ch);
            MP4Demuxer demuxer1 = new MP4Demuxer(in);
            return demuxer1.getVideoTrack().getFrameCount();
        } catch (Exception | AssertionError e) {
            log.error("Cannot extract num. of frames of: " + media, e);
        }
    }
    return -1;
}