diff --git a/filereader.py b/filereader.py
index ec31744..507a8ff 100644
--- a/filereader.py
+++ b/filereader.py
@@ -14,48 +14,57 @@ class FileReader:
 		if name:
 			self.name = name
 
-	def _read(self, mode:str, bufferLength:int, endianness:str=None) -> bytes:
+	def _read(self, mode:str, bufferLength:int, endianness:str=None, pos:int=None) -> bytes:
 		# endianness override
 		if endianness is None:
 			endianness = self.endianness
 
 		endianness = "<" if endianness == "little" else ">"
 
-		return struct.unpack(f"{endianness}{mode}", bytearray(self.stream.read(bufferLength)))[0]
+		if pos:
+			pos_backup = self.GetBufferPos()
+			self.SetBufferPos(pos)
+
+		data = struct.unpack(f"{endianness}{mode}", bytearray(self.stream.read(bufferLength)))[0]
+
+		if pos:
+			self.SetBufferPos(pos_backup)
+
+		return data
 
 	# read methods
-	def ReadInt8(self, endianness:str=None) -> int:
-		return self._read("b", 1, endianness)
+	def ReadInt8(self, endianness:str=None, pos:int=None) -> int:
+		return self._read("b", 1, endianness, pos)
 
-	def ReadUInt8(self, endianness:str=None) -> int:
-		return self._read("B", 1, endianness)
+	def ReadUInt8(self, endianness:str=None, pos:int=None) -> int:
+		return self._read("B", 1, endianness, pos)
 
-	def ReadInt16(self, endianness:str=None) -> int:
-		return self._read("h", 2, endianness)
+	def ReadInt16(self, endianness:str=None, pos:int=None) -> int:
+		return self._read("h", 2, endianness, pos)
 	
-	def ReadUInt16(self, endianness:str=None) -> int:
-		return self._read("H", 2, endianness)
+	def ReadUInt16(self, endianness:str=None, pos:int=None) -> int:
+		return self._read("H", 2, endianness, pos)
 	
-	def ReadInt32(self, endianness:str=None) -> int:
-		return self._read("i", 4, endianness)
+	def ReadInt32(self, endianness:str=None, pos:int=None) -> int:
+		return self._read("i", 4, endianness, pos)
 	
-	def ReadUInt32(self, endianness:str=None) -> int:
-		return self._read("I", 4, endianness)
+	def ReadUInt32(self, endianness:str=None, pos:int=None) -> int:
+		return self._read("I", 4, endianness, pos)
 
-	def ReadLong(self, endianness:str=None) -> int:
-		return self._read("l", 4, endianness)
+	def ReadLong(self, endianness:str=None, pos:int=None) -> int:
+		return self._read("l", 4, endianness, pos)
 
-	def ReadULong(self, endianness:str=None) -> int:
-		return self._read("L", 4, endianness)
+	def ReadULong(self, endianness:str=None, pos:int=None) -> int:
+		return self._read("L", 4, endianness, pos)
 
-	def ReadLongLong(self, endianness:str=None) -> int:
-		return self._read("q", 8, endianness)
+	def ReadLongLong(self, endianness:str=None, pos:int=None) -> int:
+		return self._read("q", 8, endianness, pos)
 
-	def ReadULongLong(self, endianness:str=None) -> int:
-		return self._read("Q", 8, endianness)
+	def ReadULongLong(self, endianness:str=None, pos:int=None) -> int:
+		return self._read("Q", 8, endianness, pos)
 
-	def ReadBytes(self, length:int, endianness:str=None) -> bytes:
-		return self._read(f"{str(length)}s", int(length), endianness)
+	def ReadBytes(self, length:int, endianness:str=None, pos:int=None) -> bytes:
+		return self._read(f"{str(length)}s", int(length), endianness, pos)
 
 	# buffer utils
 	def GetBufferPos(self) -> int:
diff --git a/wwise.py b/wwise.py
index 3ab83b6..b887ed1 100644
--- a/wwise.py
+++ b/wwise.py
@@ -142,14 +142,50 @@ def parse_wwise(reader):
 	else:
 		metadata["codecDisplay"] = codec
 
-	# parse more infos
+	# parse duration
 	if metadata["codec"] == "PTADPCM":
 		metadata["layoutType"] = "interleave"
 		metadata["interleaveBlockSize"] = metadata["blockSize"] // metadata["channels"]
 
 		metadata["numSamples"] = int((chunks["data"]["length"] / (metadata["channels"] * metadata["interleaveBlockSize"])) * (2 + (metadata["interleaveBlockSize"] - 0x05) * 2))
 		metadata["duration"] = metadata["numSamples"] / metadata["sampleRate"]
+	
+	elif metadata["codec"] == "VORBIS":
+		if (metadata["blockSize"] != 0 or metadata["bitsPerSample"] != 0):
+			print(f"[WARNING] worbis type at {reader.GetName()}, skipping")
+			return metadata
+
+		if "vorb" in chunks:
+			# vorb chunk only in wwise earlier to 2012, therefore impossible for mihoyo games
+			print(f"[WARNING] found vorb chunk at {reader.GetName()}, is this the correct game ?")
+			return metadata
+
+		extra_offset = chunks["fmt"]["offset"] + 0x18
+
+		if metadata["extraSize"] != 0x30:
+			print(f"[WARNING] unknown extra wwise size at {reader.GetName()}, skipping")
+			return metadata
+
+		data_offset = 0x10
+		blocks_offset = 0x28
+		# define header to type 2, packet to modified and codebook to aoTuV603, required ?
+
+		metadata["numSamples"] = reader.ReadInt32(extra_offset)
+		setup_offset = reader.ReadUInt32(extra_offset + data_offset)
+		audio_offset = reader.ReadUInt32(extra_offset + data_offset + 0x04)
+
+		print(metadata["numSamples"])
+		print(setup_offset)
+		print(audio_offset)
+
+		block_size_1_exp = reader.ReadUInt8(extra_offset + blocks_offset)
+		block_size_0_exp = reader.ReadUInt8(extra_offset + blocks_offset + 0x01)
+
+		chunks["data"]["offset"] -= audio_offset
+
+		# ignore packets update and codebooks parse attempts, not implemented
+
+		metadata["layoutType"] = "none"
+		metadata["duration"] = metadata["numSamples"] / metadata["sampleRate"]
 
 	return metadata
-
-	# TODO: parse VORBIS