ttx fonttool patch to dump sbix table from Apple Color Emoji, according to http://typophile.com/node/96671#comment-524375 and http://kanji-database.sourceforge.net/fonts/opentype.html

sbix.patch

commit 7f2ef9213b3a179d4b39fd921c6affb3d1553053
Author: Jiang Jiang <jiangj@opera.com>
Date:   Sun Apr 28 18:17:50 2013 +0200

    Add decompilation tool for sbix table used in Apple Color Emoji

diff --git a/Lib/fontTools/ttLib/tables/_s_b_i_x.py b/Lib/fontTools/ttLib/tables/_s_b_i_x.py
new file mode 100644
index 0000000..e126440
--- /dev/null
+++ b/Lib/fontTools/ttLib/tables/_s_b_i_x.py
@@ -0,0 +1,44 @@
+import os
+import sys
+import DefaultTable
+import struct
+from fontTools import ttLib
+from fontTools.misc.textTools import safeEval, readHex
+from types import TupleType
+
+class table__s_b_i_x(DefaultTable.DefaultTable):
+       def decompile(self, data, ttFont):
+           tableMajorVersion, tableMinorVersion = struct.unpack(">HH", data[:4])
+           self.tableVersion = "%d.%d" % (int(tableMajorVersion), int(tableMinorVersion))
+           numSizes, = struct.unpack(">L", data[4:8])
+           self.numSizes = int(numSizes)
+           self.sizeTables = []
+           self.numGlyphs = 728
+           for i in range(self.numSizes):
+               start = 8+i*4
+               offset, = struct.unpack(">L", data[start:start+4])
+               size, dpi = struct.unpack(">HH", data[offset:offset+4])
+               images = []
+               os.makedirs("%d" % size)
+               for j in range(self.numGlyphs):
+                   imageOffset, = struct.unpack(">L", data[offset+4+j*4:offset+8+j*4])
+                   nextImageOffset, = struct.unpack(">L", data[offset+8+j*4:offset+12+j*4])
+                   if nextImageOffset > imageOffset:
+                       imageData = data[offset+imageOffset+8:offset+nextImageOffset]
+                       f = open("%d/%d.png" % (size, j), "w")
+                       f.write(imageData)
+                       f.close()
+               self.sizeTables.append([int(size), int(dpi)])
+
+       def toXML(self, writer, ttFont):
+           writer.simpletag("tableVersion", version=self.tableVersion)
+           writer.newline()
+           writer.begintag("sizes", [
+               ("numSizes", self.numSizes),
+               ])
+           writer.newline()
+           for i in range(self.numSizes):
+               writer.simpletag("size", size=self.sizeTables[i][0], dpi=self.sizeTables[i][1])
+               writer.newline()
+           writer.endtag("sizes")
+           writer.newline()