How to use

readUShortValue

method

in

ucar.nc2.geotiff.GeoTiff

private int readIntValue(ByteBuffer buffer, IFDEntry ifd) {
 switch (ifd.type.code) {
  case 1:
   return (int) buffer.get();
  case 2:
   return (int) buffer.get();
  case 3:
   return readUShortValue(buffer);
  case 4:
   return buffer.getInt();
  case 5:
   return buffer.getInt();
 }
 return 0;
}

private int readIntValue(ByteBuffer buffer, IFDEntry ifd) {
 switch (ifd.type.code) {
  case 1:
   return (int) buffer.get();
  case 2:
   return (int) buffer.get();
  case 3:
   return readUShortValue(buffer);
  case 4:
   return buffer.getInt();
  case 5:
   return buffer.getInt();
 }
 return 0;
}

private int readIntValue(ByteBuffer buffer, IFDEntry ifd) {
 switch (ifd.type.code) {
  case 1:
   return (int) buffer.get();
  case 2:
   return (int) buffer.get();
  case 3:
   return readUShortValue(buffer);
  case 4:
   return buffer.getInt();
  case 5:
   return buffer.getInt();
 }
 return 0;
}

int code = readUShortValue(buffer);
Tag tag = Tag.get(code);
if (tag == null) tag = new Tag(code);
FieldType type = FieldType.get(readUShortValue(buffer));
int count = buffer.getInt();

int code = readUShortValue(buffer);
Tag tag = Tag.get(code);
if (tag == null) tag = new Tag(code);
FieldType type = FieldType.get(readUShortValue(buffer));
int count = buffer.getInt();

private IFDEntry readIFDEntry(FileChannel channel, int start) throws IOException {
 if (debugRead) System.out.println("readIFDEntry starting position to " + start);
 channel.position(start);
 ByteBuffer buffer = ByteBuffer.allocate(12);
 buffer.order(byteOrder);
 channel.read(buffer);
 buffer.flip();
 if (showBytes) printBytes(System.out, "IFDEntry bytes", buffer, 12);
 IFDEntry ifd;
 buffer.position(0);
 int code = readUShortValue(buffer);
 Tag tag = Tag.get(code);
 if (tag == null) tag = new Tag(code);
 FieldType type = FieldType.get(readUShortValue(buffer));
 int count = buffer.getInt();
 ifd = new IFDEntry(tag, type, count);
 if (ifd.count * ifd.type.size <= 4) {
  readValues(buffer, ifd);
 } else {
  int offset = buffer.getInt();
  if (debugRead) System.out.println("position to " + offset);
  channel.position(offset);
  ByteBuffer vbuffer = ByteBuffer.allocate(ifd.count * ifd.type.size);
  vbuffer.order(byteOrder);
  channel.read(vbuffer);
  vbuffer.flip();
  readValues(vbuffer, ifd);
 }
 return ifd;
}