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GNU GENERAL PUBLIC LICENSE
Version 3, 29 June 2007
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#!/usr/bin/env python
#
# hash generation library for rePear, the iPod database management tool
# Copyright (C) 2008 Martin J. Fiedler <martin.fiedler@gmx.net>
# based on original code by William Whistler (wtbw)
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
import os, re, hashlib
try:
import winreg
HaveWin32 = True
except ImportError:
HaveWin32 = False
def GetFWIDs_Win32():
# phase 1: enumerate all mass storage devices
if not HaveWin32: return []
try:
key = winreg.OpenKey(winreg.HKEY_LOCAL_MACHINE, "SYSTEM\\CurrentControlSet\\Services\\Disk\\Enum", 0, winreg.KEY_QUERY_VALUE)
except:
raise
return []
devs = []
devid = 0
try:
while True:
dev = winreg.QueryValueEx(key, str(devid))[0]
devs.append(dev.upper())
devid += 1
except:
pass
key.Close()
# phase 2: find iPods and their FWIDs there (I'm being very careful here)
fwids = []
for dev in devs:
dev = dev.upper().replace("\\", "&").split("&")
info = dict([x.split('_', 1) for x in dev if '_' in x])
vendor = info.get('VEN', None) or info.get('VID', None)
product = info.get('DEV', None) or info.get('PROD', None) or info.get('PID', None)
if not(vendor in ('APPLE', '05AC')): continue
if product and (product != 'IPOD') and not(product[:2] in ('12', '13')): continue
fwid = dev[-2].upper()
for item in dev:
if item.startswith("000A27"): fwid = item
if len(fwid) == 16: fwids.append(fwid)
return fwids
def GetFWIDs_Linux26():
LINUX_DEVDIR_BASE = "/sys/bus/usb/devices"
try:
devs = os.listdir(LINUX_DEVDIR_BASE)
except OSError:
return []
def sysfile(filename):
try:
f = open(os.path.join(devdir, filename), "rb")
data = f.read()
f.close()
return data.split(b"\0", 1)[0].strip().upper()
except IOError:
return ""
fwids = []
re_devdir = re.compile(r'^\d+-\d+$')
for dev in devs:
if not re_devdir.match(dev): continue
devdir = os.path.join(LINUX_DEVDIR_BASE, dev)
if not os.path.isdir(devdir): continue
if not((sysfile("idVendor") == "05AC") \
or (sysfile("manufacturer") == "APPLE")): continue
if not((sysfile("idProduct")[:2] in ("12", "13")) \
or (sysfile("product") == "IPOD")): continue
fwid = sysfile("serial")
if fwid and fwid.startswith(b"000A27"):
fwids.append(fwid)
return fwids
re_ioreg = re.compile(r'"(.*?)"\s+=\s+"?(.*?)"?$')
def GetFWIDs_Darwin():
devs = []
try:
f = os.popen("/usr/sbin/ioreg -l", 'r')
valid = False
for line in f:
line = line.strip("\r\n\t |+-")
if not line:
continue
if line.startswith('o'):
valid = (line[1:].strip().split()[0].split('@', 1)[0] == "iPod")
elif valid and line.startswith('"'):
m = re_ioreg.match(line)
if m:
key, value = m.groups()
if (key.lower() == "usb serial number") and (len(value) == 16):
devs.append(value.upper())
f.close()
except (OSError, IOError, EOFError):
pass
return devs
def GetFWIDs():
if os.name == 'nt':
return GetFWIDs_Win32()
elif os.name == 'posix':
try:
uname = os.uname()[0].lower()
except (AttributeError, OSError):
return []
if uname == 'linux':
return GetFWIDs_Linux26()
elif uname == 'darwin':
return GetFWIDs_Darwin()
return []
################################################################################
inv = [
0x74, 0x85, 0x96, 0xA7, 0xB8, 0xC9, 0xDA, 0xEB, 0xFC, 0x0D, 0x1E, 0x2F, 0x40, 0x51, 0x62, 0x73,
0x84, 0x95, 0xA6, 0xB7, 0xC8, 0xD9, 0xEA, 0xFB, 0x0C, 0x1D, 0x2E, 0x3F, 0x50, 0x61, 0x72, 0x83,
0x94, 0xA5, 0xB6, 0xC7, 0xD8, 0xE9, 0xFA, 0x0B, 0x1C, 0x2D, 0x3E, 0x4F, 0x60, 0x71, 0x82, 0x93,
0xA4, 0xB5, 0xC6, 0xD7, 0xE8, 0xF9, 0x0A, 0x1B, 0x2C, 0x3D, 0x4E, 0x5F, 0x70, 0x81, 0x92, 0xA3,
0xB4, 0xC5, 0xD6, 0xE7, 0xF8, 0x09, 0x1A, 0x2B, 0x3C, 0x4D, 0x5E, 0x6F, 0x80, 0x91, 0xA2, 0xB3,
0xC4, 0xD5, 0xE6, 0xF7, 0x08, 0x19, 0x2A, 0x3B, 0x4C, 0x5D, 0x6E, 0x7F, 0x90, 0xA1, 0xB2, 0xC3,
0xD4, 0xE5, 0xF6, 0x07, 0x18, 0x29, 0x3A, 0x4B, 0x5C, 0x6D, 0x7E, 0x8F, 0xA0, 0xB1, 0xC2, 0xD3,
0xE4, 0xF5, 0x06, 0x17, 0x28, 0x39, 0x4A, 0x5B, 0x6C, 0x7D, 0x8E, 0x9F, 0xB0, 0xC1, 0xD2, 0xE3,
0xF4, 0x05, 0x16, 0x27, 0x38, 0x49, 0x5A, 0x6B, 0x7C, 0x8D, 0x9E, 0xAF, 0xC0, 0xD1, 0xE2, 0xF3,
0x04, 0x15, 0x26, 0x37, 0x48, 0x59, 0x6A, 0x7B, 0x8C, 0x9D, 0xAE, 0xBF, 0xD0, 0xE1, 0xF2, 0x03,
0x14, 0x25, 0x36, 0x47, 0x58, 0x69, 0x7A, 0x8B, 0x9C, 0xAD, 0xBE, 0xCF, 0xE0, 0xF1, 0x02, 0x13,
0x24, 0x35, 0x46, 0x57, 0x68, 0x79, 0x8A, 0x9B, 0xAC, 0xBD, 0xCE, 0xDF, 0xF0, 0x01, 0x12, 0x23,
0x34, 0x45, 0x56, 0x67, 0x78, 0x89, 0x9A, 0xAB, 0xBC, 0xCD, 0xDE, 0xEF, 0x00, 0x11, 0x22, 0x33,
0x44, 0x55, 0x66, 0x77, 0x88, 0x99, 0xAA, 0xBB, 0xCC, 0xDD, 0xEE, 0xFF, 0x10, 0x21, 0x32, 0x43,
0x54, 0x65, 0x76, 0x87, 0x98, 0xA9, 0xBA, 0xCB, 0xDC, 0xED, 0xFE, 0x0F, 0x20, 0x31, 0x42, 0x53,
0x64, 0x75, 0x86, 0x97, 0xA8, 0xB9, 0xCA, 0xDB, 0xEC, 0xFD, 0x0E, 0x1F, 0x30, 0x41, 0x52, 0x63
]
table1 = [
0x3A, 0x3F, 0x3E, 0x72, 0xBD, 0xA2, 0xD6, 0xB4, 0x63, 0xC0, 0x6E, 0x62, 0x59, 0x1E, 0xE2, 0x71,
0xB5, 0x0D, 0xE8, 0x0C, 0x25, 0x38, 0xCE, 0x23, 0x7C, 0xB7, 0xAD, 0x16, 0xDF, 0x47, 0x3D, 0xB3,
0x7E, 0x8C, 0xAA, 0x61, 0x31, 0x66, 0xBE, 0x4F, 0x97, 0x14, 0x54, 0xF0, 0x70, 0xEB, 0x30, 0xC4,
0x27, 0x4E, 0xFA, 0x1A, 0x2B, 0x11, 0xF4, 0x45, 0x8E, 0x5D, 0x73, 0xED, 0x22, 0x2E, 0x7D, 0xA4,
0x28, 0xDA, 0x2F, 0xC5, 0x92, 0x09, 0x05, 0x13, 0x9D, 0x32, 0x51, 0x4A, 0xC8, 0xBA, 0x96, 0xA7,
0x6A, 0x50, 0xF3, 0xBC, 0x93, 0xBF, 0xB0, 0xD2, 0xD5, 0x82, 0x19, 0x98, 0x35, 0xCF, 0x6B, 0xB6,
0x83, 0x56, 0x15, 0xF2, 0x9A, 0x9C, 0xCA, 0x74, 0x34, 0x58, 0x8D, 0xA6, 0x03, 0xFF, 0x46, 0x7B,
0xD0, 0x7A, 0x33, 0x76, 0xDD, 0xAC, 0xCB, 0x24, 0x7F, 0xB1, 0x85, 0x60, 0xC3, 0x26, 0x8A, 0x1D,
0x1C, 0x8F, 0x2A, 0xEF, 0x06, 0xDE, 0x67, 0x5E, 0xE7, 0xAE, 0xD9, 0xCC, 0x07, 0x6C, 0xF8, 0x0A,
0xD3, 0x40, 0x36, 0x1F, 0x2D, 0x95, 0x43, 0xDB, 0x01, 0x89, 0x4B, 0xF7, 0xB9, 0x39, 0xC2, 0x52,
0x53, 0xFD, 0x65, 0xF5, 0x68, 0xC1, 0xC7, 0x9F, 0x4D, 0xEA, 0xAF, 0x6D, 0x10, 0x44, 0x87, 0xD8,
0xEE, 0x1B, 0xFE, 0x3C, 0xDC, 0x84, 0x69, 0x48, 0x6F, 0xD1, 0x57, 0x55, 0xD4, 0xA5, 0x49, 0x5B,
0xE5, 0x0B, 0x94, 0xC9, 0x5F, 0xE1, 0x17, 0x81, 0xBB, 0xEC, 0xD7, 0xC6, 0x02, 0x4C, 0x42, 0x75,
0xA3, 0x99, 0xE4, 0xA1, 0x9B, 0x5A, 0xF1, 0x29, 0xA0, 0x64, 0x9E, 0x18, 0x41, 0x80, 0x2C, 0x79,
0x20, 0x8B, 0xAB, 0x90, 0x08, 0xB8, 0xA9, 0x77, 0x12, 0xF9, 0x0E, 0x88, 0xE9, 0x04, 0xFB, 0x86,
0x0F, 0xE0, 0xA8, 0x5C, 0xE6, 0x21, 0xCD, 0x3B, 0x00, 0x78, 0xFC, 0xF6, 0xE3, 0x37, 0xB2, 0x91
]
table2 = [
0xF3, 0xE4, 0x1B, 0x38, 0xE5, 0x6F, 0xE8, 0x9D, 0x3E, 0x55, 0xBA, 0xC7, 0xAC, 0xEA, 0x66, 0xA2,
0xB9, 0x7A, 0x34, 0x43, 0x02, 0x4E, 0xFE, 0x36, 0x41, 0x57, 0x1A, 0xB1, 0x31, 0x87, 0x04, 0x52,
0x21, 0x22, 0xE1, 0x13, 0x7F, 0x03, 0x3A, 0x90, 0xF7, 0x69, 0x78, 0x12, 0x83, 0x0B, 0x9A, 0x97,
0x4D, 0xB7, 0x8C, 0xBF, 0x2D, 0x94, 0xD1, 0x93, 0x2F, 0x42, 0x23, 0xA4, 0xE0, 0x92, 0xDC, 0x68,
0xD3, 0xDD, 0xAF, 0x91, 0x9F, 0xED, 0x3D, 0x8F, 0xA1, 0x51, 0xD9, 0xE9, 0x70, 0x28, 0xEF, 0xB3,
0x49, 0xA5, 0x0D, 0xC5, 0xD0, 0x60, 0xB4, 0x2B, 0x07, 0xF8, 0xDF, 0xE6, 0x16, 0xC0, 0x30, 0x71,
0x85, 0xFD, 0x72, 0x95, 0x29, 0x79, 0x0A, 0x7B, 0x46, 0x11, 0x7D, 0x88, 0x1D, 0x2A, 0x48, 0x1F,
0x45, 0x89, 0x47, 0xEE, 0xBB, 0xBE, 0x6E, 0xC3, 0x6C, 0xCE, 0x10, 0x5A, 0x2C, 0xCA, 0xFB, 0xB2,
0xCB, 0x1C, 0x9C, 0xEC, 0x2E, 0x56, 0x59, 0x9B, 0xA6, 0x53, 0xAE, 0x17, 0x25, 0xC1, 0x3F, 0x6A,
0x0F, 0x09, 0x01, 0xA3, 0xD6, 0xA0, 0xD8, 0x08, 0xE3, 0x74, 0x06, 0x6D, 0x19, 0x98, 0x1E, 0x77,
0x76, 0xBC, 0xEB, 0x3C, 0xB0, 0xC4, 0xC8, 0x64, 0x0E, 0x86, 0x63, 0xD7, 0xDB, 0xBD, 0xA7, 0x82,
0x39, 0x4F, 0x27, 0xD2, 0x5F, 0x73, 0xF4, 0x75, 0x6B, 0xC2, 0xD5, 0x67, 0x5D, 0x80, 0xAB, 0x81,
0xDE, 0xF0, 0xAD, 0xAA, 0xCD, 0xB6, 0xF6, 0x7C, 0xFC, 0x33, 0x05, 0x14, 0x96, 0x15, 0xC9, 0x9E,
0x35, 0x5C, 0x7E, 0x44, 0x54, 0x58, 0x3B, 0x40, 0x20, 0xA8, 0x8B, 0x5E, 0x4A, 0x24, 0x99, 0x8E,
0xF5, 0xB5, 0x62, 0x00, 0x37, 0x5B, 0x18, 0x65, 0x8D, 0x32, 0xE2, 0xF9, 0xDA, 0x8A, 0xD4, 0xCC,
0x26, 0xF2, 0xF1, 0xE7, 0x4B, 0xC6, 0xCF, 0xFF, 0x4C, 0x84, 0x61, 0xFA, 0xB8, 0x0C, 0xA9, 0x50
]
fixed = [
0x67, 0x23, 0xFE, 0x30, 0x45, 0x33, 0xF8, 0x90, 0x99, 0x21, 0x07, 0xC1, 0xD0, 0x12, 0xB2, 0xA1, 0x07, 0x81
]
def gcd(a, b):
while b > 0:
a, b = b, a % b
return a
def lcm(a, b):
if not(a) or not(b):
return 1
return a * b / gcd(a, b)
def UpdateHash(db, fwid):
# extract dbid, zero out all hash stuff and add hash indicator
dbid = db[24:32]
hash2 = db[50:70]
z = 20 * b"\0"
db = db[:24] + (8 * b"\0") + db[32:48] + b"\x01\x00" + z + db[70:88] + z + db[108:]
# convert fwid to byte array
fwid = [int(fwid[i:i+2], 16) for i in range(0, 16, 2)]
# key generation, step 1: take LCM of each two bytes in the FWID in turn
key = 16 * [0]
for i in (0, 2, 4, 6):
l = int(lcm(*fwid[i:i+2]))
hi = (l & 0xFF00) >> 8
lo = l & 0x00FF
j = i << 1
key[j] = ((table1[hi] * 0xB5) - 0x03) & 0xFF
key[j|1] = ((table2[hi] * 0xB7) + 0x49) & 0xFF
key[j|2] = ((table1[lo] * 0xB5) - 0x03) & 0xFF
key[j|3] = ((table2[lo] * 0xB7) + 0x49) & 0xFF
# step 2: invert key
key = [inv[x] for x in key]
# step 3: create hash key
key = fixed + key
key = list(hashlib.sha1(bytes(key)).digest())
# first XOR
key = [(x ^ 0x36) for x in key] + 44 * [0x36]
# first SHA
h = hashlib.sha1(bytes(key) + db).digest()
# second XOR
key = [(x ^ (0x36 ^ 0x5C)) for x in key]
# second SHA
h = hashlib.sha1(bytes(key) + h).digest()
# reassemble database
return db[:24] + dbid + db[32:50] + hash2 + db[70:88] + h + db[108:]
################################################################################
if __name__ == "__main__":
import sys
fwids = GetFWIDs()
print("detected FWIDs:", fwids)
if fwids:
fwid = fwids[0]
else:
fwid = "000A27001B3EAD37"
print("no FWID detected, using default FWID for BIST")
try:
old = open(sys.argv[1], "rb").read()
except IndexError:
sys.exit(0)
new = UpdateHash(old, "000A27001B3EAD37")
print("old =>", " ".join(["%02X" % c for c in old[88:108]]))
print("new =>", " ".join(["%02X" % c for c in new[88:108]]))
if old == new:
print("MATCH!")
else:
print("no match :(")
try:
open(sys.argv[2], "wb").write(new)
except IndexError:
pass

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#!/usr/bin/env python
#
# audio file information library for rePear, the iPod database management tool
# Copyright (C) 2006-2008 Martin J. Fiedler <martin.fiedler@gmx.net>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
import sys, re, zlib, struct, os, stat
import qtparse
################################################################################
## a sh*tload of constants ##
################################################################################
ID3v1Genres = { 0:"Blues", 1:"Classic Rock", 2:"Country", 3:"Dance", 4:"Disco",
5:"Funk", 6:"Grunge", 7:"Hip-Hop", 8:"Jazz", 9:"Metal", 10:"New Age",
11:"Oldies", 12:"Other", 13:"Pop", 14:"R&B", 15:"Rap", 16:"Reggae", 17:"Rock",
18:"Techno", 19:"Industrial", 20:"Alternative", 21:"Ska", 22:"Death Metal",
23:"Pranks", 24:"Soundtrack", 25:"Euro-Techno", 26:"Ambient", 27:"Trip-Hop",
28:"Vocal", 29:"Jazz&Funk", 30:"Fusion", 31:"Trance", 32:"Classical",
33:"Instrumental", 34:"Acid", 35:"House", 36:"Game", 37:"Sound Clip",
38:"Gospel", 39:"Noise", 40:"Alternative Rock", 41:"Bass", 42:"Soul",
43:"Punk", 44:"Space", 45:"Meditative", 46:"Instrumental Pop",
47:"Instrumental Rock", 48:"Ethnic", 49:"Gothic", 50:"Darkwave",
51:"Techno-Industrial", 52:"Electronic", 53:"Pop-Folk", 54:"Eurodance",
55:"Dream", 56:"Southern Rock", 57:"Comedy", 58:"Cult", 59:"Gangsta",
60:"Top 40", 61:"Christian Rap", 62:"Pop/Funk", 63:"Jungle", 64:"Native US",
65:"Cabaret", 66:"New Wave", 67:"Psychedelic", 68:"Rave", 69:"Showtunes",
70:"Trailer", 71:"Lo-Fi", 72:"Tribal", 73:"Acid Punk", 74:"Acid Jazz",
75:"Polka", 76:"Retro", 77:"Musical", 78:"Rock & Roll", 79:"Hard Rock",
80:"Folk", 81:"Folk-Rock", 82:"National Folk", 83:"Swing", 84:"Fast Fusion",
85:"Bebop", 86:"Latin", 87:"Revival", 88:"Celtic", 89:"Bluegrass",
90:"Avantgarde", 91:"Gothic Rock", 92:"Progressive Rock",
93:"Psychedelic Rock", 94:"Symphonic Rock", 95:"Slow Rock", 96:"Big Band",
97:"Chorus", 98:"Easy Listening", 99:"Acoustic", 100:"Humour", 101:"Speech",
102:"Chanson", 103:"Opera", 104:"Chamber Music", 105:"Sonata", 106:"Symphony",
107:"Booty Bass", 108:"Primus", 109:"Porn Groove", 110:"Satire",
111:"Slow Jam", 112:"Club", 113:"Tango", 114:"Samba", 115:"Folklore",
116:"Ballad", 117:"Power Ballad", 118:"Rhytmic Soul", 119:"Freestyle",
120:"Duet", 121:"Punk Rock", 122:"Drum Solo", 123:"Acapella", 124:"Euro-House",
125:"Dance Hall", 126:"Goa", 127:"Drum & Bass", 128:"Club-House",
129:"Hardcore", 130:"Terror", 131:"Indie", 132:"BritPop", 133:"Negerpunk",
134:"Polsk Punk", 135:"Beat", 136:"Christian Gangsta", 137:"Heavy Metal",
138:"Black Metal", 139:"Crossover", 140:"Contemporary Christian",
141:"Christian Rock", 142:"Merengue", 143:"Salsa", 144:"Thrash Metal",
145:"Anime", 146:"JPop", 147:"SynthPop" }
ID3v2FrameMap = {
"TIT1": "content group",
"TIT2": "title",
"TIT3": "subtitle",
"TALB": "album",
"TOAL": "original album",
"TRCK": "/track number/total tracks",
"TPOS": "/disc number/total discs",
"TPE1": "artist",
"TPE2": "band",
"TPE3": "conductor",
"TPE4": "interpreted by",
"TOPE": "original artist",
"TEXT": "lyrics",
"TOLY": "original lyrics",
"TCOM": "composer",
"TMCL": "musician credits",
"TIPL": "involved people",
"TENC": "encoded by",
"TBPM": "#BPM",
"TYER": "#year",
# "TLEN": "length", # unreliable, rather use Xing/FhG tags or scan the file
"TKEY": "initial key",
"TLAN": "language",
"TCON": "genre",
"TFLT": "file type",
"TMED": "media type",
"TMOO": "mood",
"TCOP": "copyright",
"TPRO": "produced",
"TPUB": "publisher",
"TOWN": "owner",
"TRSN": "station name",
"TRSO": "station owner",
"TOFN": "original file name",
"TDLY": "playlist delay",
"TDEN": "encoding time",
"TDOR": "original release time",
"TDRC": "recording time",
"TDRL": "release time",
"TDTG": "tagging time",
"TSSE": "encoding settings",
"TSOA": "album sort order",
"TSOP": "performer sort order",
"TSOT": "title sort order",
"WCOM": "commercial information URL",
"WCOP": "copyright URL",
"WOAF": "audio file URL",
"WOAR": "artist URL",
"WOAS": "audio source URL",
"WORS": "station URL",
"WPAY": "payment URL",
"WPUB": "publisher URL",
"COMM": "comment"
}
RE_ID3v2_Frame_Type = re.compile(r'[A-Z0-9]{4}')
RE_ID3v2_Strip_Genre = re.compile(r'\([0-9]+\)(.*)')
################################################################################
## ID3v1 decoder ##
################################################################################
def GetID3v1(f, info):
try:
f.seek(-128, 2)
data = f.read(128)
except IOError:
return 0
if len(data) != 128 or data[:3] != b"TAG":
return 0
info['tag'] = "id3v1"
field = data[3:33].split(b"\0", 1)[0].strip()
if field:
info['title'] = field.decode('latin-1', 'replace')
field = data[33:63].split(b"\0", 1)[0].strip()
if field:
info['artist'] = field.decode('latin-1', 'replace')
field = data[63:93].split(b"\0", 1)[0].strip()
if field:
info['album'] = field.decode('latin-1', 'replace')
field = data[93:97].split(b"\0", 1)[0].strip()
if field:
try:
info['year'] = int(field.decode('latin-1'))
except ValueError:
pass
field = data[97:127].split(b"\0", 1)[0].strip()
if field:
info['comment'] = field.decode('latin-1', 'replace')
if data[125] == 0 and data[126] != 0:
info['track number'] = data[126]
try:
info['genre'] = ID3v1Genres[data[127]]
except KeyError:
pass
return -128
################################################################################
## ID3v2 decoder ##
################################################################################
def DecodeInteger(s):
res = 0
for c in s:
res = (res << 8) | ord(c)
return res
def DecodeSyncsafeInteger(s):
res = 0
for c in s:
res = (res << 7) | (ord(c) & 0x7F)
return res
def GetCharset(encoding):
if encoding=="\1": return "utf_16"
if encoding=="\2": return "utf_16_be"
if encoding=="\3": return "utf_8"
else: return "iso-8859-1"
def GetEndID3v2(f, offset=0):
try:
f.seek(offset-10, 2)
marker = f.read(10)
if len(marker)!=10 or marker[:3]!="3DI":
return None
size = DecodeSyncsafeInteger(marker[-4:]) + 10
f.seek(offset-10-size, 2)
data = f.read(size)
if len(data)!=size or data[:3]!="ID3":
return None
return data
except IOError:
return None
def GetStartID3v2(f):
try:
f.seek(0)
marker = f.read(10)
if len(marker)!=10 or marker[:3]!="ID3":
return None
size = DecodeSyncsafeInteger(marker[-4:])
payload = f.read(size)
if len(payload)!=size:
return None
return marker+payload
except IOError:
return None
def DecodeID3v2(data, info):
info['tag'] = "id3v2.%d.%d" % (ord(data[3]), ord(data[4]))
if ord(data[3]) >= 4:
decode_size = DecodeSyncsafeInteger
else:
decode_size = DecodeInteger
# parse header flags, strip header(s)
flags = ord(data[5])
data = data[10:]
if flags & 0x40: # extended header
size = decode_size(data[:4])
data = data[size:]
# parse frames
while len(data)>=10:
frame = data[:4]
if not RE_ID3v2_Frame_Type.match(frame):
break # invalid frame name or start of padding => bail out
size = decode_size(data[4:8])
payload = data[10:size+10]
flags = ord(data[9])
if flags & 0x02:
payload = payload.replace("\xff\0", "\xff")
if flags & 0x04:
try:
payload = zlib.decompress(payload)
except zlib.error:
continue # this frame is broken
HandleID3v2Frame(frame, payload, flags, info)
data = data[size+10:]
def HandleID3v2Frame(frame, payload, flags, info):
text = None
if not payload: return # empty payload
if frame[0] == 'T' and frame != "TXXX":
# text frame
charset = GetCharset(payload[0])
text = payload[1:].decode(charset, 'replace').split('\0', 1)[0]
elif frame[0] == 'W' and frame != "WXXX":
# URL
text = payload.split(b"\0", 1)[0].decode("iso-8859-1", 'replace')
elif frame == "COMM":
# comment
charset = GetCharset(payload[0])
lang = payload[1:4].split(b"\0", 1)[0]
parts = payload[4:].decode(charset, 'replace').split('\0', 2)
if len(parts) < 2: return # broken frame
text = parts[1]
if text: ##### apply the current textual frame ####
key = ID3v2FrameMap.get(frame, frame)
text = text.strip()
if frame == "TCON": # strip crappy numerical genre comment
m = RE_ID3v2_Strip_Genre.match(text.encode('iso-8859-1', 'replace'))
if m: text = m.group(1)
if key[0] == "#": # numerical key
try:
text = str(int(text.strip()))
except ValueError:
return # broken frame
key = key[1:]
if key[0] == "/": # multipart numerical key
keys = key[1:].split("/")
values = text.split("/")
for key, value in zip(keys, values):
try:
info[key] = int(value)
except:
pass
return # already done here
info[key] = text
################################################################################
## ultra-simple (and not very fault-tolerant) Ogg Vorbis metadata decoder ##
################################################################################
def DecodeVorbisHeader(f, info):
try:
f.seek(0)
data = f.read(4096) # almost one page, should be enough
except IOError:
return False
if data[:4] != b"OggS": return False # no Ogg -- don't bother
data = data.split(b"vorbis", 3)
if len(data) != 4: return False # no Vorbis packets
info['format'] = "ogg" # at this point, we can assume the stream is valid
info['filetype'] = "Ogg Vorbis"
data = data[2]
if len(data) < 8: return True # comment packet too short
# encoder version
size = struct.unpack("<L", data[:4])[0]
if size: info['encoder'] = data[4:size+4].decode("utf_8", 'replace')
data = data[size+4:]
# field count
if len(data) < 8: return True # comment packet too short
count = struct.unpack("<L", data[:4])[0]
data = data[4:]
# field data
for i in range(count):
if len(data) < 4: break # comment packet too short
size = struct.unpack("<L", data[:4])[0]
if size:
line = data[4:size+4]
if b"=" in line:
key, value = line.split(b'=', 1)
value = value.strip()
if key == b"TRACKNUMBER":
try:
info["track number"] = int(value)
except ValueError:
pass
else:
info[key.decode("utf_8", 'replace').lower()] = value.decode("utf_8", 'replace')
data = data[size+4:]
return True
################################################################################
## MP3 frame parser ##
################################################################################
mp3_bitrates = [
[0, 8, 16, 24, 32, 40, 48, 56, 64, 80, 96,112,128,144,160,0],
[0, 32, 40, 48, 56, 64, 80, 96,112,128,160,192,224,256,320,0]
]
mp3_samplerates = [
[22050,24000,16000,0x0FFFFFFF],
[44100,48000,32000,0x0FFFFFFF]
]
def IsValidMP3Header(header):
return (len(header) == 4) \
and ( header[0] == 0xFF) \
and ((header[1] & 0xF0) == 0xF0) \
and ((header[1] & 0x06) == 0x02) \
and ((header[2] & 0xF0) != 0xF0) \
and (header[2] & 0xF0) \
and ((header[2] & 0x0C) != 0x0C)
def ScanMP3(f, info, start_offset=0):
try:
f.seek(start_offset)
sample = f.read(64*1024) # the MP3 stuff should start in the first 64k
# search for the start of the MP3 data part
pos = 0
while True:
pos = sample.find(b"\xff", pos)
if pos < 0: return False
if IsValidMP3Header(list(sample[pos:pos+4])): break
pos += 1
f.seek(start_offset + pos)
except IOError:
return False
# init global statistics
total_samples = 0
total_frames = 0
total_bytes = 0
used_bitrates = {}
force_vbr = False
data = b""
# scan the file
while True:
try:
header = f.read(4)
except IOError:
break
if len(header) != 4: break
# reject frames that do not look like MP3
header = list(header)
if not IsValidMP3Header(header):
# OK, this file is broken. try to re-synchronize.
resync_pos = f.tell()
try:
# search for the first 8 bits of a frame sync marker in the
# next 4 KiB
pos = f.read(4096).find(b"\xff")
except IOError:
break
if pos < 0:
break
else:
f.seek(resync_pos + pos)
continue
# calculate details
version = (header[1] >> 3) & 1
samples = 576 * (version + 1)
b2 = header[2]
bitrate = mp3_bitrates[version][b2 >> 4]
samplerate = mp3_samplerates[version][(b2 >> 2) & 3]
padding = (b2 >> 1) & 1
framesize = 72000 * (version + 1) * bitrate // samplerate + padding
# skip frame data
try:
frame = f.read(framesize - 4)
# accumulate the data of the first 10 frames
if total_frames < 10:
data += frame
except IOError:
break
# fix statistics
total_samples += samples
total_frames += 1
total_bytes += framesize
used_bitrates[bitrate] = None
# after 10 frames, check for Xing/LAME/FhG headers
if total_frames == 10:
valid = False
# check for Xing/LAME VBR header
p2 = data.find(b"Xing\0\0\0")
if (p2 > 0) and (data[p2 + 7] & 1):
force_vbr = True
# check for LAME CBR header
p = data.find(b"Info\0\0\0")
if force_vbr or ((p > 0) and (data[p + 7] & 1)):
if force_vbr: p = p2
total_frames, total_bytes = struct.unpack(">ii", data[p+8:p+16])
if not(data[p + 7] & 2):
total_bytes = info['size'] # size not specified, estimate
total_samples = total_frames * samples
valid = True
# check for FhG header
else:
p = data.find(b"VBRI\0\1")
if p > 0:
force_vbr = True
total_bytes, total_frames = struct.unpack(">ii", data[p+10:p+18])
total_samples = total_frames * samples
valid = True
# final sanity check
if valid:
if (total_frames < 10) or (total_bytes < 1000) or (total_bytes > info['size']):
valid = False
if valid:
# verify computed bitrate
check_bitrate = total_bytes * 8 * 0.001 / total_frames / samples * samplerate
if force_vbr:
# valid range for VBR files: all the way through
min_rate = 30.0
max_rate = 330.0
else:
# valid range for CBR files: current bitrate +/- 10%
min_rate = bitrate * 0.9
max_rate = bitrate * 1.1
valid = (check_bitrate > min_rate) and (check_bitrate < max_rate)
if valid:
break
else:
# this didn't work out, continue conventionally
total_samples = 10 * samples
total_frames = 10
total_bytes = 0
force_vbr = False
# scan complete, finish things
if total_frames < 10:
return False # less than 10 frames? that's a little bit short ...
info['filetype'] = "MPEG-%d Audio Layer 3" % (2 - version)
info['sample rate'] = samplerate
info['sample count'] = total_samples
info['length'] = total_samples * 1.0 / samplerate
if force_vbr or (len(used_bitrates) > 1):
info['format'] = "mp3-vbr"
info['bitrate'] = int(total_bytes * 8 * 0.001 / info['length'])
else:
info['format'] = "mp3-cbr"
info['bitrate'] = bitrate
return True
################################################################################
## MP4 decoder wrapper ##
################################################################################
def DecodeMP4(f, info):
try:
f.seek(0)
first_atom = f.read(8)[4:]
except IOError:
return False
if not(first_atom in ('moov', 'ftyp')):
return False # no MP4 file
try:
qt = qtparse.QTParser(f)
except IOError:
return False
info.update(qt.get_repear_info())
del qt
return True
################################################################################
## toplevel GetAudioFileInfo() function ##
################################################################################
def GetAudioFileInfo(filename, stat_only=False):
try:
s = os.stat(filename)
except OSError:
return None
if not stat.S_ISREG(s[stat.ST_MODE]):
return None
info = {'path': filename, 'size':s[stat.ST_SIZE], 'mtime':s[stat.ST_MTIME]}
if stat_only: return info
# try to extract a track number from the file name
track = 0
for c in os.path.split(filename)[-1]:
if c in "0123456789":
track = (10 * track) + ord(c) - 48
else:
break
if track:
info['track number'] = track
# open the file
try:
f = open(filename, "rb")
except IOError:
return None
# MP4 probing
if DecodeMP4(f, info):
return info
# Ogg Vorbis probing
if DecodeVorbisHeader(f, info):
return info
# some ID3 probing
end_offset = GetID3v1(f, info)
id3v2_data = GetEndID3v2(f, end_offset)
if id3v2_data: DecodeID3v2(id3v2_data, info)
id3v2_data = GetStartID3v2(f)
if id3v2_data:
start_offset = len(id3v2_data)
DecodeID3v2(id3v2_data, info)
else: start_offset = 0
ScanMP3(f, info, start_offset)
f.close()
return info

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#!/usr/bin/env python
#
# QuickTime parser library for rePear, the iPod database management tool
# Copyright (C) 2006-2008 Martin J. Fiedler <martin.fiedler@gmx.net>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
import sys, struct
ID3v1Genres = { 0:"Blues", 1:"Classic Rock", 2:"Country", 3:"Dance", 4:"Disco",
5:"Funk", 6:"Grunge", 7:"Hip-Hop", 8:"Jazz", 9:"Metal", 10:"New Age",
11:"Oldies", 12:"Other", 13:"Pop", 14:"R&B", 15:"Rap", 16:"Reggae", 17:"Rock",
18:"Techno", 19:"Industrial", 20:"Alternative", 21:"Ska", 22:"Death Metal",
23:"Pranks", 24:"Soundtrack", 25:"Euro-Techno", 26:"Ambient", 27:"Trip-Hop",
28:"Vocal", 29:"Jazz&Funk", 30:"Fusion", 31:"Trance", 32:"Classical",
33:"Instrumental", 34:"Acid", 35:"House", 36:"Game", 37:"Sound Clip",
38:"Gospel", 39:"Noise", 40:"Alternative Rock", 41:"Bass", 42:"Soul",
43:"Punk", 44:"Space", 45:"Meditative", 46:"Instrumental Pop",
47:"Instrumental Rock", 48:"Ethnic", 49:"Gothic", 50:"Darkwave",
51:"Techno-Industrial", 52:"Electronic", 53:"Pop-Folk", 54:"Eurodance",
55:"Dream", 56:"Southern Rock", 57:"Comedy", 58:"Cult", 59:"Gangsta",
60:"Top 40", 61:"Christian Rap", 62:"Pop/Funk", 63:"Jungle", 64:"Native US",
65:"Cabaret", 66:"New Wave", 67:"Psychedelic", 68:"Rave", 69:"Showtunes",
70:"Trailer", 71:"Lo-Fi", 72:"Tribal", 73:"Acid Punk", 74:"Acid Jazz",
75:"Polka", 76:"Retro", 77:"Musical", 78:"Rock & Roll", 79:"Hard Rock",
80:"Folk", 81:"Folk-Rock", 82:"National Folk", 83:"Swing", 84:"Fast Fusion",
85:"Bebop", 86:"Latin", 87:"Revival", 88:"Celtic", 89:"Bluegrass",
90:"Avantgarde", 91:"Gothic Rock", 92:"Progressive Rock",
93:"Psychedelic Rock", 94:"Symphonic Rock", 95:"Slow Rock", 96:"Big Band",
97:"Chorus", 98:"Easy Listening", 99:"Acoustic", 100:"Humour", 101:"Speech",
102:"Chanson", 103:"Opera", 104:"Chamber Music", 105:"Sonata", 106:"Symphony",
107:"Booty Bass", 108:"Primus", 109:"Porn Groove", 110:"Satire",
111:"Slow Jam", 112:"Club", 113:"Tango", 114:"Samba", 115:"Folklore",
116:"Ballad", 117:"Power Ballad", 118:"Rhytmic Soul", 119:"Freestyle",
120:"Duet", 121:"Punk Rock", 122:"Drum Solo", 123:"Acapella", 124:"Euro-House",
125:"Dance Hall", 126:"Goa", 127:"Drum & Bass", 128:"Club-House",
129:"Hardcore", 130:"Terror", 131:"Indie", 132:"BritPop", 133:"Negerpunk",
134:"Polsk Punk", 135:"Beat", 136:"Christian Gangsta", 137:"Heavy Metal",
138:"Black Metal", 139:"Crossover", 140:"Contemporary Christian",
141:"Christian Rock", 142:"Merengue", 143:"Salsa", 144:"Thrash Metal",
145:"Anime", 146:"JPop", 147:"SynthPop" }
QTAtomTypeMap = {
'moov': 'container',
'udta': 'container',
'trak': 'container',
'mdia': 'container',
'minf': 'container',
'stbl': 'container',
'pinf': 'container',
'schi': 'container',
'ilst': 'container',
}
QTTrackTypeMap = {
'vide': 'video',
'soun': 'audio',
}
QTMetaDataMap = {
'$nam': ('text', 'title'),
'$alb': ('text', 'album'),
'$art': ('text', 'artist'),
'$ART': ('text', 'artist'), # FAAC writes this tag in captital letters
'aART': ('text', 'album artist'),
'$cmt': ('text', 'comment'),
'$day': ('year', 'year'),
'$gen': ('text', 'genre'),
'$wrt': ('text', 'composer'),
'$too': ('text', 'encoder'),
'cprt': ('text', 'copyright'),
'trkn': ('track', None),
'disk': ('disc', None),
'covr': ('artwork', None),
'cpil': ('flag', 'compilation'),
'$lyr': ('text', 'lyrics'),
'desc': ('text', 'description'),
'purl': ('text', 'podcast url'),
'egid': ('text', 'episode id'),
'catg': ('text', 'category'),
'keyw': ('text', 'keyword'),
'gnre': ('genre', None),
# gnre Genre 1 | 0 text | uint8 iTunes 4.0
# tmpo BPM 21 uint8 iTunes 4.0
# rtng Rating/Advisory 21 uint8 iTunes 4.0
# stik ?? (stik) 21 uint8 ??
# pcst Podcast 21 uint8 iTunes 4.9
# tvnn TV Network Name 1 text iTunes 6.0
# tvsh TV Show Name 1 text iTunes 6.0
# tven TV Episode No 1 text iTunes 6.0
# tvsn TV Season 21 uint8 iTunes 6.0
# tves TV Episode 21 uint8 iTunes 6.0
# pgap Gapless Play 21 uin8 iTunes 7.0
}
MP4DescriptorMap = {
0x03: 'MP4ESDescr',
0x04: 'MP4DecConfigDescr',
0x05: 'MP4DecSpecificDescr',
0x06: 'MP4SLConfigDescr',
}
MP4ObjectTypeMap = {
0x20: 'MPEG4Visual',
0x40: 'MPEG4Audio',
}
MP4ProfileMap = {
1: "AAC Main",
2: "LC-AAC",
3: "AAC SSR",
4: "AAC LTP",
5: "HE-AAC",
6: "Scalable",
7: "TwinVQ",
8: "CELP",
9: "HVXC",
12: "TTSI",
13: "Main Synthetic Profile",
14: "Wavetable synthesis",
15: "General MIDI",
16: "Algorithmic Synthesis and Audio FX",
17: "LC-AAC with error recovery",
19: "AAC LTP with error recovery",
20: "AAC SSR with error recovery",
21: "TwinVQ with error recovery",
22: "BSAC with error recovery",
23: "AAC LD with error recovery",
24: "CELP with error recovery",
25: "HXVC with error recovery",
26: "HILN with error recovery",
27: "Parametric with error recovery",
}
H264ProfileMap = {
66: "BP",
77: "MP",
88: "EP",
100: "HP",
110: "H10P",
144: "H444P",
}
def chop(s):
if s: return (ord(s[0]), s[1:])
return (0, "")
def dictremove(d, rlist):
for r in rlist:
if r in d:
del d[r]
class QTParser:
def __init__(self, f, verbose=False):
self.f = f
self.verbose = verbose
self.info = {}
self.time_scale = 1
self.tracks = {}
self.trackid = None
self.artwork = []
self.errors = []
self.f.seek(0, 2)
self.info['size'] = self.f.tell()
self.parse_container(0, self.info['size'])
def log_path(self, path, atom, size, start=None):
if not self.verbose: return
if start is None:
print("%s%s (%d bytes)" % (" " * len(path), atom, size))
else:
print("%s%s (%d bytes @ %d)" % (" " * len(path), atom, size, start))
def err(self, path, message):
self.errors.append((self.repr_path(path), message))
def reject(self, path, size, minsize, need_track=True):
atom = path[-1]
if need_track:
if self.trackid is None:
return self.err(path, "%s outside of a track" % atom)
if not(self.trackid in self.tracks):
return True
if size < minsize:
return self.err(path, "atom too small")
return False
def gettrack(self, prop, default=None):
return self.tracks[self.trackid].get(prop, default)
def settrack(self, prop, value):
self.tracks[self.trackid][prop] = value
def repr_path(self, path):
if not path: return "<root>"
return ".".join(path)
def parse_container(self, start=0, size=0, path=[]):
end = start + size
while (start + 8) < end:
self.f.seek(start)
head = self.f.read(8)
start += 8
size = struct.unpack(">L", head[:4])[0] - 8
if size < 0:
return self.err(path, "invalid sub-atom size")
atom = head[4:].strip("\0 ").replace('\xa9', '$')
if not atom:
break
self.log_path(path, atom, size, start)
if atom in QTMetaDataMap:
alias = 'container'
else:
alias = QTAtomTypeMap.get(atom, atom)
try:
assert alias
parser = getattr(self, "parse_" + alias)
except (AttributeError, AssertionError):
parser = None
if parser:
parser(start, min(size, end - start), path + [atom])
start += size
if start < end:
return self.err(path, "%d orphaned bytes" % (end - start))
if start > end:
return self.err(path, "%d missing bytes" % (start - end))
def parse_trak(self, start, size, path):
self.track = None
self.parse_container(start, size, path)
self.track = None
def parse_mvhd(self, start, size, path):
if self.reject(path, size, 20, False): return
data = self.f.read(20)
self.time_scale, length = struct.unpack(">LL", data[12:])
self.info['length'] = float(length) / self.time_scale
def parse_tkhd(self, start, size, path):
if self.reject(path, size, 24, False): return
data = self.f.read(min(size, 84))
self.trackid, dummy, length = struct.unpack(">LLL", data[12:24])
if not self.trackid in self.tracks:
self.tracks[self.trackid] = {}
self.settrack('length', float(length) / self.time_scale)
if len(data) >= 84:
w, h = struct.unpack(">LL", data[76:84])
self.settrack('width', w >> 16)
self.settrack('height', h >> 16)
def parse_mdhd(self, start, size, path):
if self.reject(path, size, 20): return
data = self.f.read(20)
time_scale, length = struct.unpack(">LL", data[12:])
self.settrack('length', float(length) / time_scale)
def parse_hdlr(self, start, size, path):
if 'udta' in path:
return
if self.reject(path, size, 12): return
data = self.f.read(12)
try:
self.tracks[self.trackid]['type'] = QTTrackTypeMap[data[8:]]
except KeyError:
del self.tracks[self.trackid]
def parse_stsd(self, start, size, path):
if self.reject(path, size, 8): return
data = self.f.read(8)
count = struct.unpack(">L", data[4:8])[0]
end = start + size
start += 8
media_type = self.gettrack('type')
for i in range(count):
if start > (end - 16):
return self.err(path, "description #%d too small" % (i+1))
self.f.seek(start)
data = self.f.read(16)
start += 16
size = struct.unpack(">L", data[:4])[0] - 16
format = data[4:8].strip("\0 ")
refidx = struct.unpack(">H", data[14:])[0]
self.log_path(path, format, size, start)
try:
parser = getattr(self, "parse_stsd_" + media_type)
except KeyError:
if not i: self.err(path, "descriptions found, but no handler defined")
parser = None
except AttributeError:
parser = None
if parser:
self.settrack('format', format)
parser(start, min(size, end - start), path + [format])
start += size
def parse_stsd_audio(self, start, size, path):
if self.reject(path, size, 20): return
data = self.f.read(20)
version, rev, ven, chan, res, compid, packsize, rate_hi, rate_lo = \
struct.unpack(">HHLHHHHHH", data)
if version == 0:
hsize = 20
elif version == 1:
hsize = 24
else:
return self.err(path, "unknown audio stream description version")
if size < hsize:
return self.err(path, "stream description too small")
start += hsize
size -= hsize
self.settrack('channels', chan)
self.settrack('bits per sample', res)
self.settrack('sample rate', rate_hi)
if self.gettrack('length'):
self.settrack('sample count', int(rate_hi * self.gettrack('length') + 0.5))
self.parse_container(start, size, path)
def parse_stsd_video(self, start, size, path):
if self.reject(path, size, 70): return
version, rev, ven, tq, sq, w, h, hres, vres, zero, frames = \
struct.unpack(">HHLLLHHLLLH", self.f.read(34))
if (w != self.gettrack('width')) or (h != self.gettrack('height')):
self.err(path, "video size doesn't match track header value")
data = self.f.read(32)
clen = ord(data[0])
if clen > 31:
self.err(path, "invalid compressor name length")
elif clen:
self.settrack('compressor', data[1:clen+1])
self.parse_container(start + 70, size - 70, path)
def parse_avcC(self, start, size, path):
if self.reject(path, size, 4): return
data = self.f.read(4)
profile = H264ProfileMap.get(ord(data[1]), None)
level = ord(data[3])
if level % 10:
level = "%d.%d" % (level / 10, level % 10)
else:
level = str(level / 10)
if (level == "1.1") and (ord(data[2]) & 0x10):
level = "1b"
format = "H.264"
if profile: format += " " + profile
self.settrack('video format', format + "@L" + level)
def parse_esds(self, start, size, path):
try:
if not(path[-2] in ('mp4a', 'mp4v')):
return # unknown format, ignore it
except IndexError:
return self.err(path, "esds atom found at root level")
if self.reject(path, size, 4, False): return
self.f.seek(start + 4)
self.parse_mp4desc(path, self.f.read(size - 4))
def parse_mp4desc(self, path, data):
while data:
tag, data = chop(data)
size = 0
while True:
if not data:
return self.err(path, "descriptor ends while decoding length")
byte, data = chop(data)
size = (size << 7) | (byte & 0x7F)
if not(byte & 0x80): break
if size > len(data):
self.err(path, "%d missing bytes in descriptor" % (size - len(data)))
size = len(data)
tag = MP4DescriptorMap.get(tag, "0x%02X" % tag)
self.log_path(path, tag, size)
try:
parser = getattr(self, "parse_" + tag)
except AttributeError:
parser = None
if parser:
parser(path + [tag], data[:size])
data = data[size:]
def parse_MP4ESDescr(self, path, data):
if self.reject(path, len(data), 3, False): return
esid, flags = struct.unpack(">BH", data[:3])
data = data[3:]
if flags & 0x80: # stream_dependence
if self.reject(path, len(data), 2, False): return
data = data[2:]
if flags & 0x40: # URL
if self.reject(path, len(data), 1, False): return
size, data = chop(data)
if self.reject(path, len(data), size, False): return
data = data[size:]
if flags & 0x20: # ocr_stream
if self.reject(path, len(data), 2, False): return
data = data[2:]
self.parse_mp4desc(path, data)
def parse_MP4DecConfigDescr(self, path, data):
if self.reject(path, len(data), 13, False): return
otid, flags, buf_hi, buf_lo, rate_max, rate_avg = \
struct.unpack(">BBBHLL", data[:13])
self.settrack('bitrate', int(rate_avg / 1000))
objtype = MP4ObjectTypeMap.get(otid, None)
if not objtype: return # some unknown format
self.parse_mp4desc(path + [objtype], data[13:])
def parse_MP4DecSpecificDescr(self, path, data):
try:
parser = getattr(self, "parse_MP4DecSpecificDescr_" + path[-2])
except AttributeError:
return # unknown format
except IndexError:
raise
parser(path, data)
def parse_MP4DecSpecificDescr_MPEG4Audio(self, path, data):
if self.reject(path, len(data), 2, False): return
a, data = chop(data)
b, data = chop(data)
profile = (a >> 3) & 0x1F
freq = ((a << 1) | (b >> 7)) & 0x0F
try:
self.settrack('filetype', "MPEG-4 " + MP4ProfileMap[profile])
except KeyError:
pass
if freq == 15:
if self.reject(path, len(data), 3, False): return
freq = b & 0x7F
b, data = chop(data)
freq = (freq << 7) | b
b, data = chop(data)
freq = (freq << 7) | b
b, data = chop(data)
freq = (freq << 1) | (b >> 7)
else:
try:
freq = (96000, 88200, 64000, 48000, 44100, 32000, 24000, 22050, 16000, 12000, 11025, 8000, 7350)[freq]
except IndexError:
self.err(path, "invalid sampling rate code %d" % freq)
freq = 0
if freq:
ref = self.gettrack('sample rate')
if not ref:
self.settrack('sample rate', freq)
elif freq != ref:
self.err(path, "sample rate in AAC descriptor (%d) doesn't match sample rate in stream description (%d)" % (freq, ref))
if data:
return self.err(path, "descriptor is longer than expected")
def parse_MP4DecSpecificDescr_MPEG4Visual(self, path, data):
self.settrack('video format', 'MPEG-4 ASP')
def parse_meta(self, start, size, path):
self.parse_container(start + 4, size - 4, path)
def parse_data(self, start, size, path):
if self.reject(path, size, 8, False): return
try:
parser, key = QTMetaDataMap[path[-2]]
except IndexError:
return self.err(path, "data atom found at root level")
except KeyError:
return self.err(path, "no parser defined for this atom")
format = struct.unpack(">L", self.f.read(8)[:4])[0] & 0x00FFFFFF
try:
parser = getattr(self, "format_" + parser)
except AttributeError:
return self.err(path, "format parser `%s' doesn't exist" % parser)
res = parser(path, self.f.read(size - 8))
if key:
if res is None:
return self.err(path, "decoding failed, no value assigned")
self.info[key] = res
def format_text(self, path, data):
data = data.strip("\0")
if data.startswith("\xfeff"):
return str(data, 'utf_16')
else:
return str(data, 'utf_8')
def format_year(self, path, data):
data = data.strip("\0").split('-', 1)[0]
try:
return int(data)
except ValueError:
return self.err(path, "invalid date format")
def format_byte(self, path, data):
if not data:
return self.err(path, "zero-length data block")
return ord(data[0])
def format_genre(self, path, data):
if not data:
return self.err(path, "zero-length data block")
genre = ID3v1Genres.get(ord(data[-1]) - 1, None)
if genre: self.info["genre"] = genre
def format_track(self, path, data, item='track'):
if self.reject(path, len(data), 6, False): return
current, total = struct.unpack(">HH", data[2:6])
if current: self.info["%s number" % item] = current
if total: self.info["total %ss" % item] = total
def format_disc(self, path, data):
return self.format_track(path, data, 'disc')
def format_artwork(self, path, data):
self.artwork.append(data)
def format_flag(self, path, data):
return len(data.strip("\0")) != 0
def get_repear_info(self):
info = {}
have_video = False
have_audio = False
for track in self.tracks.values():
ttype = track.get('type', '?')
if not(have_audio) and (ttype == 'audio'):
ainfo = track.copy()
dictremove(ainfo, ('type', 'width', 'height'))
info.update(ainfo)
have_audio = True
if not(have_video) and (ttype == 'video'):
vinfo = track.copy()
dictremove(vinfo, ('type',))
if have_audio: dictremove(vinfo, ('format', ))
info.update(vinfo)
have_video = True
info.update(self.info)
if ('album artist' in info) and not('artist' in info):
info['artist'] = info['album artist']
if have_video:
info['filetype'] = "MPEG-4 Video file"
elif not('filetype' in info):
info['filetype'] = "MPEG-4 Audio File"
return info
################################################################################
def dump_dict(d):
keys = d.keys()
keys.sort()
for key in keys:
print(" %s = %s" % (key, repr(d[key])))
if __name__ == "__main__":
qt = QTParser(open(sys.argv[1], "rb"), True)
print()
print("Raw file information:")
dump_dict(qt.info)
for track in qt.tracks:
print("Raw track information (id %s):" % track)
dump_dict(qt.tracks[track])
print()
print("rePear-compliant information:")
dump_dict(qt.get_repear_info())
print()
if qt.errors:
print("Errors:")
for e in qt.errors: print(" %s: %s" % e)
print()

10
repear.log Normal file
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Welcome to rePear, version 0.4.1
--------------------------------
iPod root directory is `F:/'
Moving tracks back to their original locations ...
s2/Sade - Your Love Is King.mp3 [OK]
Operation complete: 1 tracks total, 1 moved back, 0 failed.
You can now manage the music files on your iPod.

1686
repear.py Normal file
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32
repear_playlists.ini Normal file
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; ***** rePear master playlist file *****
; This file contains descriptions of playlists that rePear shall create
; automatically based on certain properties of the audio files. It consists of
; two parts: global options and playlist specifications.
; For more detailed information on how to use this file, read usage.html
; ----- global options -----
skip album playlists = yes
; YES if .m3u files that are just a directory index shall be skipped [default]
; NO if every .m3u playlist found on the iPod shall be turned into a playlist
directory playlists = no
; YES if rePear shall create a playlist for *every* folder found on the iPod
; NO if it shall not do that [default]
; ----- playlist specifications -----
; playlist specifications use the following syntax:
; [Playlist Name] ; the playlist name
; include = /path/to/directory ; include a directory into this playlist
; exclude = /another/diretory ; exclude a directory from the playlist
; new = 1 ; include all new tracks [optional]
; changed = 1 ; include all changed tracks [optional]
; shuffle = balanced ; enable balanced playlist shuffling [opt.]
; shuffle = random ; enable random playlist shuffling [opt.]
; sort = <criteria> ; sort tracks [optional, see documentation]
; an example playlist that contains all tracks that have been modified since
; the last freeze operation
[Hot New Stuff]
new = 1
changed = 1