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# Wwise Sound Extractor (by Nicknine)
# Requires Python 3
# This script loads soundbanksinfo.xml and uses it to extract the sound files with proper names.

import os
import struct
import shutil
import xml.etree.ElementTree

# This is the script config. Update these variables appropriately for your game.
# Path to soundbanksinfo.xml
gameRoot=r"D:\Games\Steam\steamapps\common\DOOM\base\sound\soundbanks\pc"

# Output path
targetDirectory=r"E:\GameRips\doom"

# List PCK files used by the game here. You can skip PCKs for the languages you don't need.
pckFiles = [
    "initial.pck",
    "streamed_sfx.pck",
    "streamed_sfx_dlc1.pck",
    "streamed_sfx_dlc2.pck",
    "streamed_sfx_dlc3.pck",
    "English(US)/streamed_vo.pck",
    "English(US)/streamed_vo_dlc1.pck",
    "English(US)/streamed_vo_dlc2.pck",
    "English(US)/streamed_vo_dlc3.pck",
    ]

# List banks that you want to extract in "name:language" format.
# Language is always "SFX" for normal banks, check soundbanksinfo.xml for what languages are available for voice banks.
targetBanks = [
    "doom_music:SFX",
    "doom_vo:English(US)",
    ]

# NOTE: Each bank will be extracted into its own sub-folder.

# Actual script starts here.

def unpackLE(typ,data): return struct.unpack("<"+typ,data)
def unpackBE(typ,data): return struct.unpack(">"+typ,data)

def detectEndian(f,pos):
    prev=f.tell()
    f.seek(pos)
    data=f.read(4)
    LETest=unpackLE("I",data)[0]
    BETest=unpackBE("I",data)[0]
    f.seek(prev)
    return True if LETest > BETest else False

class Bank:
    def __init__(self,path):
        self.path=path
        self.f=open(path,"rb")
        self.bigEndian=detectEndian(self.f,0x04)
        self.unpack=unpackBE if self.bigEndian else unpackLE
        self.f.seek(0,2)
        self.size=self.f.tell()
        self.f.seek(0)
        
        magic, size = self.getSectionHeader()
        if magic!=b"BKHD":
            raise Exception("%s: Wrong BNK header magic." % self.path)

tableOffset, tableSize = self.findSection(b"DIDX")
        dataOffset, dataSize = self.findSection(b"DATA")

# Parse sound entries from DIDX table.
        self.f.seek(tableOffset)
        self.numFiles=tableSize//0x0c
        self.files=dict()

for i in range(self.numFiles):
            file=BankFile(self,dataOffset)
            self.files[file.id]=file

def getVar(self):
        return self.unpack("I",self.f.read(4))[0]

def findSection(self,targetSection):
        self.f.seek(0)

while self.f.tell()!=self.size:
            magic,size=self.getSectionHeader()
            offset=self.f.tell()
            if magic==targetSection:
                return (offset,size)

self.f.seek(size,1)

raise Exception("%s: Did not find section %s." % (self.path,targetSection.decode()))

def getSectionHeader(self):
        magic=self.f.read(4)
        size=self.unpack("I",self.f.read(4))[0]
        return (magic, size)

class BankFile:
    def __init__(self,bank,dataOffset):
        self.id=bank.getVar()
        self.offset=bank.getVar()
        self.size=bank.getVar()

self.offset+=dataOffset

class Package:
    def __init__(self,path):
        self.path=path
        self.f=open(path,"rb")
        self.magic=self.f.read(4)
        if self.magic!=b"AKPK":
            raise Exception("%s: Wrong PCK header magic." % self.path)

self.bigEndian=detectEndian(self.f,0x08)
        self.unpack=unpackBE if self.bigEndian else unpackLE

self.headerSize=self.getVar()
        self.flag=self.getVar()
        self.langsSize=self.getVar()
        self.banksSize=self.getVar()
        self.soundsSize=self.getVar()

if self.langsSize+self.banksSize+self.soundsSize+0x10==self.headerSize:
            # Initial version.
            self.version=1
        else:
            # 2012 revision which added the fourth section and changed file size from 64-bit to 32-bit.
            self.version=2
            self.unk=self.getVar()

# Parse languages.
        self.langsOffset=self.f.tell()
        self.numLangs=self.getVar()
        self.langs=dict()

for i in range(self.numLangs):
            lang=PackageLanguage(self)
            self.langs[lang.id]=lang

# Skip language names.
        self.f.seek(self.langsOffset+self.langsSize)

# Parse embedded banks.
        self.numBanks=self.getVar()
        self.banks=dict()
        for i in range(self.numBanks):
            file=PackageFile(self)
            self.banks[file.id]=file

# Parse sounds.
        self.numFiles=self.getVar()
        self.files=dict()
        for i in range(self.numFiles):
            file=PackageFile(self)
            self.files[file.id]=file

streamedFiles[file.id] = self, file

def readLangName(self):
        bytestring=b""
        if self.version==1 or gamePlatform=="Windows":
            while True:
                byte=self.f.read(2)
                if byte==b"\x00\x00": break
                bytestring+=byte

return bytestring.decode("utf-16be") if self.bigEndian else bytestring.decode("utf-16le")
        else:
            while True:
                byte=self.f.read(1)
                if byte==b"\x00": break
                bytestring+=byte

return bytestring.decode("utf-8")

def getVar(self):
        return self.unpack("I",self.f.read(4))[0]

def getVar64(self):
        return self.unpack("Q",self.f.read(8))[0]

class PackageLanguage:
    def __init__(self,pck):
        self.nameOffset=pck.getVar()
        self.id=pck.getVar()
        pos=pck.f.tell()
        pck.f.seek(pck.langsOffset+self.nameOffset)
        self.name=pck.readLangName()
        pck.f.seek(pos)

class PackageFile:
    def __init__(self,pck):
        self.id=pck.getVar()
        self.mult=pck.getVar()
        self.size=pck.getVar64() if pck.version==1 else pck.getVar()
        self.offset=pck.getVar()
        self.lang=pck.getVar()

if self.mult!=0: self.offset*=self.mult;

def extractFile(f,offset,size,name,outPath):
    print(name)
    soundPath=os.path.join(outPath,name)

f.seek(offset)
    folderPath=os.path.dirname(soundPath)
    os.makedirs(folderPath,exist_ok=True)
    f2=open(soundPath,"wb")
    f2.write(f.read(sound.size))
    f2.close()

def extractLooseFile(path,name,outPath):
    print(name)
    soundPath=os.path.join(outPath,name)

folderPath=os.path.dirname(soundPath)
    os.makedirs(folderPath,exist_ok=True)
    shutil.copyfile(path,soundPath)

# Normalize paths.
gameRoot=os.path.normpath(gameRoot)
targetDirectory=os.path.normpath(targetDirectory)

tree=xml.etree.ElementTree.parse(os.path.join(gameRoot,"soundbanksinfo.xml"))
root=tree.getroot()
gamePlatform=root.get("Platform")
schemaVersion=int(root.get("SchemaVersion"))

print("Loading package files...")
packages=list()
streamedFiles=dict()
for pck in pckFiles:
    pckPath=os.path.join(gameRoot,os.path.normpath(pck))
    packages.append(Package(pckPath))

print("Loading streamed file names...")
streamedFileNames=dict()
for node in list(root.find("StreamedFiles")):
    if node.get("UsingReferenceLanguageAsStandIn")=="true":
        continue # Skip these, they're just duplicates.

id=int(node.get("Id"))
    lang=node.get("Language")
    streamedFileNames[id] = os.path.normpath(node.find("Path").text), lang

for targetBank in targetBanks:
    targetName, targetLang = targetBank.split(":")

# Find bank with the specified name and language.
    bankNode=None

for node in list(root.find("SoundBanks")):
        if node.get("Language")==targetLang and node.find("ShortName").text==targetName:
            bankNode=node
            break

if not bankNode:
        print("Bank %s was not found" % targetBank)
        continue

print(targetBank)
    bankOutPath=os.path.join(targetDirectory,targetName)

# Extract all included files.
    if schemaVersion<10:
        IncludedMemoryFiles=bankNode.find("IncludedFullFiles")
        hasIncludedFiles=len(list(IncludedMemoryFiles))!=0
    else:
        IncludedMemoryFiles=bankNode.find("IncludedMemoryFiles")
        hasIncludedFiles=IncludedMemoryFiles!=None

if hasIncludedFiles:
        # Only load BNK file if there are any files to extract, empty banks have no DIDX and DATA sections at all.
        bankPath=os.path.join(gameRoot,bankNode.find("Path").text)
        bank=Bank(bankPath)

for node in list(IncludedMemoryFiles):
            id=int(node.get("Id"))
            name=os.path.normpath(node.find("Path").text)
            if id in streamedFileNames:
                continue # Prefetched streamed sound, ignore.

try:
                sound=bank.files[id]
            except Exception:
                raise Exception("Internal file %u not found in bank %s. Check your files!" % (id,targetBank))
            
            extractFile(bank.f,sound.offset,sound.size,name,bankOutPath)

bank.f.close()

# Extract all streamed files.
    ReferencedStreamedFiles=bankNode.find("ReferencedStreamedFiles")
    if ReferencedStreamedFiles:
        for node in list(ReferencedStreamedFiles):
            id=int(node.get("Id"))
            name, lang = streamedFileNames[id]
            ext=os.path.splitext(name)[1]

try:
                # Try looking for it in PCKs first.
                pck, sound = streamedFiles[id]
                extractFile(pck.f,sound.offset,sound.size,name,bankOutPath)
            except:
                # Failing that, see if it's a loose file.
                path=os.path.join(gameRoot,lang,str(id)+ext) if lang!="SFX" else os.path.join(gameRoot,str(id)+ext)
                if os.path.isfile(path):
                    extractLooseFile(path,name,bankOutPath)
                else:
                    print("Streamed file %u not found! Have you included all the required package files?" % id)

for pck in packages:
    pck.f.close()

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