Convert a .pvr.ccz texture to an decompressed / inflated .pvr texture

InflatePVRCCZTexture.rb

# 
# InflatePVRCCZTexture.rb - By Michael J. Sikorsky @robotsNpencils
# Converts .pvr.ccz textures to .pvr 
#
# Usage: ruby InflatePVRCCZTexture.rb {INPUT FILE.pvr.ccz} {OUTPUT FILE.pvr}
#        Example: 
# 			ruby InflatePVRCCZTexture.rb agametexture.pvr.ccv agametexture.pvr
# 
# README:
#
#   A .pvr.ccz file looks like this:
#    
#   +--------------+------------------------------------+
#   | CCZHEADER    | ZLIB COMPRESSED PVR TEXTURE (.pvr) |
#   +--------------+------------------------------------+
#   <-- 16 Bytes ->
#
#   This script, chops off the CCZHeader Chunk, and Zlib Inflates the rest.
#
# 	TODO - make this better, like this :) http://rubylearning.com/blog/2011/01/03/how-do-i-make-a-command-line-tool-in-ruby/
#        

require 'zlib'

# 
# COMPUTING THE SIZEOF THE CCZHEADER:
#
# From Andreas Loew: the creator of texturepacker (http://www.codeandweb.com/texturepacker):
# 
# struct CCZHeader {
#		uint8_t			sig[4];				// signature. Should be 'CCZ!' 4 bytes
#		uint16_t		compression_type;	// should 0
#		uint16_t		version;			// should be 2 (although version type==1 is also supported)
#		uint32_t		reserved;			// Reserverd for users.
#		uint32_t		len;				// size of the uncompressed file
#	};
#
#	enum {
#		CCZ_COMPRESSION_ZLIB,				// zlib format.
#		CCZ_COMPRESSION_BZIP2,				// bzip2 format (not supported yet)
#		CCZ_COMPRESSION_GZIP,				// gzip format (not supported yet)
#		CCZ_COMPRESSION_NONE,				// plain (not supported yet)
#	};
#
SIZE_OF_CCZHEADER_IN_BYTES = 16 # see above

if ARGV.length != 2 then
	puts """
Usage: ruby InflatePVRCCZTexture.rb {INPUT FILE.pvr.ccz} {OUTPUT FILE.pvr}
Example: 
	ruby InflatePVRCCZTexture.rb agametexture.pvr.ccv agametexture.pvr
	"""
	fail "You need to pass an input file .pvr.ccz and output file .pvr."
end

input_file_name  = ARGV[0]
output_file_name = ARGV[1]

def inflatePVRCCZ(input_file_name,output_file_name)
	input_file = File.new(input_file_name,'rb')
	input_binary_string = input_file.read
	input_binary_string_without_cczheader = input_binary_string[SIZE_OF_CCZHEADER_IN_BYTES,input_binary_string.length]
	input_binary_string = ''
	input_file.close()

	output_string = Zlib::Inflate.inflate(input_binary_string_without_cczheader)
	output_file = File.new(output_file_name,'wb')
	output_file.write(output_string)
	output_file.close()
	puts ".pvr.ccz file Inflated: "+output_file_name
end

begin
	inflatePVRCCZ(input_file_name,output_file_name)
rescue Exception => e
	fail "Something went wrong in inflatePVRCCZ - likely a file problem - check your input file exists and ends in .pvr.ccz; details = "+e.message
end

the pvr.ccz has been Encryption