use of org.jcodec.common.FileChannelWrapper in project OpenOLAT by OpenOLAT.
the class MovieServiceImpl method getSize.
@Override
public Size getSize(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 null;
}
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);
org.jcodec.common.model.Size size = demuxer1.getMovie().getDisplaySize();
// Case 1: standard case, get dimension from movie
int w = size.getWidth();
int h = size.getHeight();
// Case 2: landscape movie from iOS: width and height is negative, no dunny why
if (w < 0 && h < 0) {
w = 0 - w;
h = 0 - h;
}
if (w == 0) {
// something in the track box.
try {
// This code is the way it is just because I don't know
// how to safely read the rotation/portrait/landscape
// flag of the movie. Those mp4 guys are really
// secretive folks, did not find any documentation about
// this. Best guess.
org.jcodec.common.model.Size size2 = demuxer1.getVideoTrack().getBox().getCodedSize();
w = size2.getHeight();
h = size2.getWidth();
} catch (Exception e) {
log.debug("can not get size from box " + e.getMessage());
}
}
return new Size(w, h, false);
} catch (Exception | AssertionError e) {
log.error("Cannot extract size of: " + media, e);
}
} else if (suffix.equals("flv")) {
try (InputStream stream = new FileInputStream(file)) {
FLVParser infos = new FLVParser();
infos.parse(stream);
if (infos.getWidth() > 0 && infos.getHeight() > 0) {
int w = infos.getWidth();
int h = infos.getHeight();
return new Size(w, h, false);
}
} catch (Exception e) {
log.error("Cannot extract size of: " + media, e);
}
}
return null;
}
use of org.jcodec.common.FileChannelWrapper in project OpenOLAT by OpenOLAT.
the class MovieServiceImpl method isMP4.
@Override
public boolean isMP4(VFSLeaf media, String fileName) {
File file = null;
if (media instanceof VFSCPNamedItem) {
media = ((VFSCPNamedItem) media).getDelegate();
}
if (media instanceof LocalFileImpl) {
file = ((LocalFileImpl) media).getBasefile();
}
if (file == null) {
return false;
}
String suffix = FileUtils.getFileSuffix(fileName);
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);
String fourCC = demuxer1.getVideoTrack().getFourcc();
if (fourCCs.contains(fourCC.toLowerCase())) {
return true;
}
log.info("Movie file::" + fileName + " has correct suffix::" + suffix + " but fourCC::" + fourCC + " not in our list of supported codecs.");
} catch (Exception | Error e) {
// anticipated exception, is not an mp4 file
}
}
return false;
}
use of org.jcodec.common.FileChannelWrapper in project OpenOLAT by OpenOLAT.
the class VideoManagerImpl method getFrameWithFilter.
@Override
public boolean getFrameWithFilter(OLATResource videoResource, int frameNumber, long duration, VFSLeaf frame) {
File videoFile = ((LocalFileImpl) getMasterVideoFile(videoResource)).getBasefile();
BufferedImage bufImg = null;
boolean imgBlack = true;
int countBlack = 0;
try (RandomAccessFile randomAccessFile = new RandomAccessFile(videoFile, "r")) {
OutputStream frameOutputStream = frame.getOutputStream(false);
FileChannel ch = randomAccessFile.getChannel();
FileChannelWrapper in = new FileChannelWrapper(ch);
FrameGrab frameGrab = new FrameGrab(in).seekToFrameSloppy(frameNumber);
bufImg = frameGrab.getFrame();
int xmin = bufImg.getMinX();
int ymin = bufImg.getMinY();
int xmax = xmin + bufImg.getWidth();
int ymax = ymin + bufImg.getHeight();
int pixelCount = bufImg.getWidth() * bufImg.getHeight();
for (int x = xmin; x < xmax; x++) {
for (int y = ymin; y < ymax; y++) {
int rgb = bufImg.getRGB(x, y);
// int alpha = (0xff000000 & rgb) >>> 24;
int r = (0x00ff0000 & rgb) >> 16;
int g = (0x0000ff00 & rgb) >> 8;
int b = (0x000000ff & rgb);
if (r < 30 && g < 30 && b < 30) {
countBlack++;
}
}
}
if (countBlack > (int) (0.7F * pixelCount)) {
imgBlack = true;
} else {
imgBlack = false;
ImageIO.write(bufImg, "JPG", frameOutputStream);
}
// avoid endless loop
if (frameNumber > duration) {
imgBlack = false;
}
// close everything to prevent resource leaks
frameOutputStream.close();
in.close();
ch.close();
return imgBlack;
} catch (Exception | AssertionError e) {
log.error("Could not get frame::" + frameNumber + " for video::" + videoFile.getAbsolutePath(), e);
return false;
}
}
use of org.jcodec.common.FileChannelWrapper in project openolat by klemens.
the class MovieServiceImpl method getDuration.
@Override
public long getDuration(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);
MovieBox movie = demuxer1.getMovie();
long duration = movie.getDuration();
int timescale = movie.getTimescale();
if (timescale < 1) {
timescale = 1;
}
// Simple calculation. Ignore NTSC and other issues for now
return duration / timescale * 1000;
} catch (Exception | AssertionError e) {
log.error("Cannot extract duration of: " + media, e);
}
}
return -1;
}
use of org.jcodec.common.FileChannelWrapper in project openolat by klemens.
the class MovieServiceImpl method isMP4.
@Override
public boolean isMP4(VFSLeaf media, String fileName) {
File file = null;
if (media instanceof VFSCPNamedItem) {
media = ((VFSCPNamedItem) media).getDelegate();
}
if (media instanceof LocalFileImpl) {
file = ((LocalFileImpl) media).getBasefile();
}
if (file == null) {
return false;
}
String suffix = FileUtils.getFileSuffix(fileName);
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);
String fourCC = demuxer1.getVideoTrack().getFourcc();
if (fourCCs.contains(fourCC.toLowerCase())) {
return true;
}
log.info("Movie file::" + fileName + " has correct suffix::" + suffix + " but fourCC::" + fourCC + " not in our list of supported codecs.");
} catch (Exception | Error e) {
// anticipated exception, is not an mp4 file
}
}
return false;
}
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