RPT decoder for Super Mario 64 RPT textures from Super Mario 3D All-Stars

rptimage.py

# To use:
# 1. extract the NCAs from the NSP (I used NSCB)
# 2. extract the contents of 5977df9d4848858cbde157c6723dd1de.nca
# 3. inside 1 [romfs]\rom\Stardust_JP\Textures you'll find texture_pack.cpio. Extract it (I uzed 7zip)
# 4. run this python 2.7 script in the directory with all the .rpt files. It'll create a out folder containing all the PNGs

import struct,glob,os,zlib
from PIL import Image

OUTDIR='out'
if not os.path.exists(OUTDIR):
	os.mkdir(OUTDIR)
for name in glob.glob('*.rpt'):
	outpath=os.path.join(OUTDIR,name+'.png')
	if os.path.exists(outpath):
		continue
	print name
	with open(name, 'rb') as f:
		data=zlib.decompress(f.read())

	with open(name,'rb') as f:
		imagetype = ord(data[0x19])
		w,_,h = struct.unpack('>HHH',data[0x22:0x28])
 		print 'Type: {:02x} w:{} h:{}'.format(imagetype,w,h)

		if w==0 or h==0:
			print 'Bad image!'
			continue
		
		img = Image.frombytes('RGBA', (w,h), data[0x40:0x40+w*h*4])
		img.save(outpath)

update for nso rpt's?