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Copy pathAudioClipConverter.py
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230 lines (191 loc) · 7.19 KB
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from __future__ import annotations
import ctypes
import os
import platform
from threading import Lock
from typing import TYPE_CHECKING, Dict
from UnityPy.streams import EndianBinaryWriter
from ..helpers.ResourceReader import get_resource_data
try:
import numpy as np
except ImportError:
np = None
import struct
if TYPE_CHECKING:
from ..classes import AudioClip
# pyfmodex loads the dll/so/dylib on import
# so we have to adjust the environment vars
# before importing it
# This is done in import_pyfmodex()
# which will replace the global pyfmodex var
pyfmodex = None
def get_fmod_path(
system: str, # "Windows", "Linux", "Darwin"
arch: str, # "x64", "x86", "arm", "arm64"
) -> str:
if system == "Darwin":
# universal dylib
return "lib/FMOD/Darwin/libfmod.dylib"
if system == "Windows":
return f"lib/FMOD/Windows/{arch}/fmod.dll"
if system == "Linux":
if arch == "x64":
arch = "x86_64"
return f"lib/FMOD/Linux/{arch}/libfmod.so"
raise NotImplementedError(f"Unsupported system: {system}")
def import_pyfmodex():
global pyfmodex
if pyfmodex is not None:
return
# determine system - Windows, Darwin, Linux, Android
system = platform.system()
arch = platform.architecture()[0]
machine = platform.machine()
if "arm" in machine:
arch = "arm"
elif "aarch64" in machine:
if system == "Linux":
arch = "arm64"
else:
arch = "arm"
elif arch == "32bit":
arch = "x86"
elif arch == "64bit":
arch = "x64"
fmod_rel_path = get_fmod_path(system, arch)
fmod_path = os.path.join(os.path.dirname(os.path.dirname(os.path.realpath(__file__))), fmod_rel_path)
os.environ["PYFMODEX_DLL_PATH"] = fmod_path
# build path and load library
# prepare the environment for pyfmodex
if system != "Windows":
# hotfix ctypes for pyfmodex for non windows systems
ctypes.windll = None
import pyfmodex
def extract_audioclip_samples(audio: AudioClip, convert_pcm_float: bool = True) -> Dict[str, bytes]:
"""extracts all the samples from an AudioClip
:param audio: AudioClip
:type audio: AudioClip
:return: {filename : sample(bytes)}
:rtype: dict
"""
if audio.m_AudioData:
audio_data = audio.m_AudioData
else:
resource = audio.m_Resource
audio_data = get_resource_data(
resource.m_Source,
audio.object_reader.assets_file,
resource.m_Offset,
resource.m_Size,
)
magic = memoryview(audio_data)[:8]
if magic[:4] == b"OggS":
return {f"{audio.m_Name}.ogg": audio_data}
elif magic[:4] == b"RIFF":
return {f"{audio.m_Name}.wav": audio_data}
elif magic[4:8] == b"ftyp":
return {f"{audio.m_Name}.m4a": audio_data}
return dump_samples(audio, audio_data, convert_pcm_float)
SYSTEM_INSTANCES = {} # (channels, flags) -> (pyfmodex_system_instance, lock)
SYSTEM_GLOBAL_LOCK = Lock()
def get_pyfmodex_system_instance(channels: int, flags: int):
global pyfmodex, SYSTEM_INSTANCES, SYSTEM_GLOBAL_LOCK
with SYSTEM_GLOBAL_LOCK:
instance_key = (channels, flags)
if instance_key in SYSTEM_INSTANCES:
return SYSTEM_INSTANCES[instance_key]
system = pyfmodex.System()
system.init(channels, flags, None)
lock = Lock()
SYSTEM_INSTANCES[instance_key] = (system, lock)
return system, lock
def dump_samples(clip: AudioClip, audio_data: bytes, convert_pcm_float: bool = True) -> Dict[str, bytes]:
global pyfmodex
if pyfmodex is None:
import_pyfmodex()
if not pyfmodex:
return {}
if clip.m_Channels is None:
raise NotImplementedError("AudioClip.m_Channels is None, no solution implemented yet.")
system, lock = get_pyfmodex_system_instance(clip.m_Channels, pyfmodex.flags.INIT_FLAGS.NORMAL)
with lock:
sound = system.create_sound(
bytes(audio_data),
pyfmodex.flags.MODE.OPENMEMORY,
exinfo=pyfmodex.structure_declarations.CREATESOUNDEXINFO(
length=len(audio_data),
numchannels=clip.m_Channels,
defaultfrequency=clip.m_Frequency,
),
)
# iterate over subsounds
samples = {}
for i in range(sound.num_subsounds):
if i > 0:
filename = "%s-%i.wav" % (clip.m_Name, i)
else:
filename = "%s.wav" % clip.m_Name
subsound = sound.get_subsound(i)
samples[filename] = subsound_to_wav(subsound, convert_pcm_float)
subsound.release()
sound.release()
return samples
def subsound_to_wav(subsound, convert_pcm_float: bool = True) -> bytes:
# get sound settings
sound_format = subsound.format.format
sound_data_length = subsound.get_length(pyfmodex.enums.TIMEUNIT.PCMBYTES)
channels = subsound.format.channels
bits = subsound.format.bits
sample_rate = int(subsound.default_frequency)
if sound_format in [
pyfmodex.enums.SOUND_FORMAT.PCM8,
pyfmodex.enums.SOUND_FORMAT.PCM16,
pyfmodex.enums.SOUND_FORMAT.PCM24,
pyfmodex.enums.SOUND_FORMAT.PCM32,
]:
# format is PCM integer
audio_format = 1
wav_data_length = sound_data_length
convert_pcm_float = False
elif sound_format == pyfmodex.enums.SOUND_FORMAT.PCMFLOAT:
# format is IEEE 754 float
if convert_pcm_float:
audio_format = 1
bits = 16
wav_data_length = sound_data_length // 2
else:
audio_format = 3
wav_data_length = sound_data_length
else:
raise NotImplementedError("Sound format " + sound_format + " is not supported.")
w = EndianBinaryWriter(endian="<")
# RIFF header
w.write(b"RIFF") # chunk id
w.write_int(wav_data_length + 36) # chunk size - 4 + (8 + 16 (sub chunk 1 size)) + (8 + length (sub chunk 2 size))
w.write(b"WAVE") # format
# fmt chunk - sub chunk 1
w.write(b"fmt ") # sub chunk 1 id
w.write_int(16) # sub chunk 1 size, 16 for PCM
w.write_short(audio_format) # audio format, 1: PCM integer, 3: IEEE 754 float
w.write_short(channels) # number of channels
w.write_int(sample_rate) # sample rate
w.write_int(sample_rate * channels * bits // 8) # byte rate
w.write_short(channels * bits // 8) # block align
w.write_short(bits) # bits per sample
# data chunk - sub chunk 2
w.write(b"data") # sub chunk 2 id
w.write_int(wav_data_length) # sub chunk 2 size
# sub chunk 2 data
lock = subsound.lock(0, sound_data_length)
for ptr, sound_data_length in lock:
ptr_data = ctypes.string_at(ptr, sound_data_length.value)
if convert_pcm_float:
if np is not None:
ptr_data = np.frombuffer(ptr_data, dtype=np.float32)
ptr_data = (ptr_data * (1 << 15)).astype(np.int16).tobytes()
else:
ptr_data = struct.unpack("<%df" % (len(ptr_data) // 4), ptr_data)
ptr_data = struct.pack("<%dh" % len(ptr_data), *[int(f * (1 << 15)) for f in ptr_data])
w.write(ptr_data)
subsound.unlock(*lock)
return w.bytes