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Code Issues Releases Wiki Activity

preliminary support for extracting iQue files

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This commit is contained in:
Connor Olding 2018-04-28 06:36:30 +02:00
parent 7243d1f181
commit bd6cf49f6b
1 changed files with 25 additions and 8 deletions
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33
z64dump.py
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@ -29,6 +29,7 @@ lament = lambda *args, **kwargs: print(*args, file=sys.stderr, **kwargs)
# shoutouts to spinout182
# assume first entry is makerom (0x1060), and second entry begins from makerom
dma_sig = b"\x00\x00\x00\x00\x00\x00\x10\x60\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x10\x60"
dma_sig_ique = b"\x00\x00\x00\x00\x00\x00\x10\x50\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x10\x50"
# hacky
heresay = os.path.split(sys.argv[0])[0]
@ -44,6 +45,17 @@ def dump_wrap(data, fn, size):
fn += '.' + kind
dump_as(data, fn, size)
def try_deflate(fn, compressed, size):
# love you zoinkity
import zlib
decomp = zlib.decompressobj(-zlib.MAX_WBITS)
data = bytearray()
data.extend(decomp.decompress(compressed))
while decomp.unconsumed_tail:
data.extend(decomp.decompress(decomp.unconsumed_tail))
data.extend(decomp.flush())
return data
def z_dump_file(f, i=0, name=None, uncompress=True):
vs = R4(f.read(4)) # virtual start
ve = R4(f.read(4)) # virtual end
@ -85,8 +97,12 @@ def z_dump_file(f, i=0, name=None, uncompress=True):
dump(compressed, fn+'.Yaz0', len(compressed))
else:
if uncompress:
lament('unknown compression; skipping:', fn)
lament(compressed[:4])
data = try_deflate(fn, compressed, size)
if data is None or len(data) == 0:
lament('unknown compression; skipping:', fn)
lament(compressed[:4])
else:
dump(data, fn, size)
else:
lament('unknown compression:', fn)
dump(compressed, fn, len(compressed))
@ -100,12 +116,13 @@ def z_find_dma(f):
data = f.read(16)
if len(data) == 0: # EOF
break
if data == dma_sig[:16]:
rest = dma_sig[16:]
if f.read(len(rest)) == rest:
return f.tell() - len(rest) - 16
else:
f.seek(len(rest), 1)
for sig in (dma_sig, dma_sig_ique):
if data == sig[:16]:
rest = sig[16:]
if f.read(len(rest)) == rest:
return f.tell() - len(rest) - 16
else:
f.seek(len(rest), 1)
def z_dump(f, names=None, uncompress=True):
f.seek(0x1060) # skip header when finding dmatable