@Override
protected ChannelBuffer read(int fd, long position, int length)
throws IOException, XrootdException {
if (fd < 0 || fd >= descriptors.size() || descriptors.get(fd) == null) {
throw new XrootdException(kXR_FileNotOpen, "Invalid file descriptor");
}
FileDescriptor descriptor = descriptors.get(fd);
byte[] chunkArray = new byte[length];
ByteBuffer chunk = ByteBuffer.wrap(chunkArray);
descriptor.read(chunk, position);
return wrappedBuffer(chunkArray, 0, chunkArray.length - chunk.remaining());
}
protected void read(Map<Integer, ByteBuffer> tags) {
super.read(tags);
for (Iterator<Entry<Integer, ByteBuffer>> it = tags.entrySet().iterator(); it.hasNext(); ) {
Entry<Integer, ByteBuffer> entry = it.next();
ByteBuffer _bb = entry.getValue();
switch (entry.getKey()) {
case 0x3215:
signalStandard = _bb.get();
break;
case 0x320c:
frameLayout = LayoutType.values()[_bb.get()];
break;
case 0x3203:
storedWidth = _bb.getInt();
break;
case 0x3202:
storedHeight = _bb.getInt();
break;
case 0x3216:
storedF2Offset = _bb.getInt();
break;
case 0x3205:
sampledWidth = _bb.getInt();
break;
case 0x3204:
sampledHeight = _bb.getInt();
break;
case 0x3206:
sampledXOffset = _bb.getInt();
break;
case 0x3207:
sampledYOffset = _bb.getInt();
break;
case 0x3208:
displayHeight = _bb.getInt();
break;
case 0x3209:
displayWidth = _bb.getInt();
break;
case 0x320a:
displayXOffset = _bb.getInt();
break;
case 0x320b:
displayYOffset = _bb.getInt();
break;
case 0x3217:
displayF2Offset = _bb.getInt();
break;
case 0x320e:
aspectRatio = new Rational(_bb.getInt(), _bb.getInt());
break;
case 0x3218:
activeFormatDescriptor = _bb.get();
break;
case 0x320d:
videoLineMap = readInt32Batch(_bb);
break;
case 0x320f:
alphaTransparency = _bb.get();
break;
case 0x3210:
transferCharacteristic = UL.read(_bb);
break;
case 0x3211:
imageAlignmentOffset = _bb.getInt();
break;
case 0x3213:
imageStartOffset = _bb.getInt();
break;
case 0x3214:
imageEndOffset = _bb.getInt();
break;
case 0x3212:
fieldDominance = _bb.get();
break;
case 0x3201:
pictureEssenceCoding = UL.read(_bb);
break;
case 0x321a:
codingEquations = UL.read(_bb);
break;
case 0x3219:
colorPrimaries = UL.read(_bb);
break;
default:
Logger.warn(String.format("Unknown tag [ " + ul + "]: %04x", entry.getKey()));
continue;
}
it.remove();
}
}
