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Inlined inverting of header bytes

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NicoHood 2016-08-27 15:34:20 +02:00
parent e5322ce9f8
commit 406050c382
1 changed files with 5 additions and 7 deletions
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12
ipod-shuffle-4g.py
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@ -207,8 +207,6 @@ class Record(object):
output = "" output = ""
for i in self._struct.keys(): for i in self._struct.keys():
(fmt, default) = self._struct[i] (fmt, default) = self._struct[i]
if fmt == "4s":
fmt, default = "I", int(binascii.hexlify(default), 16)
output += struct.pack("<" + fmt, self._fields.get(i, default)) output += struct.pack("<" + fmt, self._fields.get(i, default))
return output return output
@ -265,7 +263,7 @@ class TunesSD(Record):
self.track_header = TrackHeader(self) self.track_header = TrackHeader(self)
self.play_header = PlaylistHeader(self) self.play_header = PlaylistHeader(self)
self._struct = collections.OrderedDict([ self._struct = collections.OrderedDict([
("header_id", ("4s", "shdb")), ("header_id", ("4s", "bdhs")), # shdb
("unknown1", ("I", 0x02000003)), ("unknown1", ("I", 0x02000003)),
("total_length", ("I", 64)), ("total_length", ("I", 64)),
("total_number_of_tracks", ("I", 0)), ("total_number_of_tracks", ("I", 0)),
@ -302,7 +300,7 @@ class TrackHeader(Record):
self.base_offset = 0 self.base_offset = 0
Record.__init__(self, parent) Record.__init__(self, parent)
self._struct = collections.OrderedDict([ self._struct = collections.OrderedDict([
("header_id", ("4s", "shth")), ("header_id", ("4s", "hths")), # shth
("total_length", ("I", 0)), ("total_length", ("I", 0)),
("number_of_tracks", ("I", 0)), ("number_of_tracks", ("I", 0)),
("unknown1", ("Q", 0)), ("unknown1", ("Q", 0)),
@ -328,7 +326,7 @@ class Track(Record):
def __init__(self, parent): def __init__(self, parent):
Record.__init__(self, parent) Record.__init__(self, parent)
self._struct = collections.OrderedDict([ self._struct = collections.OrderedDict([
("header_id", ("4s", "shtr")), ("header_id", ("4s", "rths")), # shtr
("header_length", ("I", 0x174)), ("header_length", ("I", 0x174)),
("start_at_pos_ms", ("I", 0)), ("start_at_pos_ms", ("I", 0)),
("stop_at_pos_ms", ("I", 0)), ("stop_at_pos_ms", ("I", 0)),
@ -399,7 +397,7 @@ class PlaylistHeader(Record):
self.base_offset = 0 self.base_offset = 0
Record.__init__(self, parent) Record.__init__(self, parent)
self._struct = collections.OrderedDict([ self._struct = collections.OrderedDict([
("header_id", ("4s", "shph")), ("header_id", ("4s", "hphs")), #shph
("total_length", ("I", 0)), ("total_length", ("I", 0)),
("number_of_playlists", ("I", 0)), ("number_of_playlists", ("I", 0)),
("number_of_non_podcast_lists", ("2s", "\xFF\xFF")), ("number_of_non_podcast_lists", ("2s", "\xFF\xFF")),
@ -446,7 +444,7 @@ class Playlist(Record):
self.listtracks = [] self.listtracks = []
Record.__init__(self, parent) Record.__init__(self, parent)
self._struct = collections.OrderedDict([ self._struct = collections.OrderedDict([
("header_id", ("4s", "shpl")), ("header_id", ("4s", "lphs")), # shpl
("total_length", ("I", 0)), ("total_length", ("I", 0)),
("number_of_songs", ("I", 0)), ("number_of_songs", ("I", 0)),
("number_of_nonaudio", ("I", 0)), ("number_of_nonaudio", ("I", 0)),