protected TrueTypeFontHeader(final byte[] data) throws IllegalStateException {
this.version = ByteAccessUtilities.readULong(data, 0);
if (version != 0x00010000 && version != 0x4F54544F)
throw new IllegalStateException("Not a valid TTF or OTF file: Signature not recognized.");
this.numTables = ByteAccessUtilities.readUShort(data, 4);
this.searchRange = ByteAccessUtilities.readUShort(data, 6);
this.entrySelector = ByteAccessUtilities.readUShort(data, 8);
this.rangeShift = ByteAccessUtilities.readUShort(data, 10);
}
protected TableDirectoryEntry(final byte[] data, final int offset) {
this.tag = ByteAccessUtilities.readULong(data, offset);
this.checkSum = ByteAccessUtilities.readULong(data, offset + 4);
this.offset = (int) ByteAccessUtilities.readULong(data, offset + 8);
this.length = (int) ByteAccessUtilities.readULong(data, offset + 12);
}