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#!/usr/bin/env python
# -*- coding: UTF-8 -*-
#
osLibFound = False
sysLibFound = False
shutilLibFound = False
waveLibFound = False
ctypesLibFound = False
structLibFound = False
try:
import os
except ImportError:
print "[Error] os python library is required to be installed!"
else:
osLibFound = True
try:
import sys
except ImportError:
print "[Error] sys python library is required to be installed!"
else:
sysLibFound = True
try:
import shutil
except ImportError:
print "[Error] Shutil python library is required to be installed!"
else:
shutilLibFound = True
try:
import wave
except ImportError:
print "[Error] Wave python library is required to be installed!"
else:
waveLibFound = True
try:
import ctypes
except ImportError:
print "[Error] ctypes python library is required to be installed!"
else:
ctypesLibFound = True
try:
import struct
except ImportError:
print "[Error] struct python library is required to be installed!"
else:
structLibFound = True
if (not osLibFound) \
or (not sysLibFound) \
or (not shutilLibFound) \
or (not waveLibFound) \
or (not ctypesLibFound) \
or (not structLibFound):
sys.stdout.write("[Error] Errors were found when trying to import required python libraries\n")
sys.exit(1)
from struct import *
from audFileDecode import *
MY_MODULE_VERSION = "0.80"
MY_MODULE_NAME = "audFileLib"
#constants
aud_chunk_id = 0x0000deaf
SIZE_OF_AUD_HEADER_IN_BYTES = 12
SIZE_OF_AUD_CHUNK_HEADER_IN_BYTES = 8
class AudHeader:
m_samplerate = 0 #// Frequency // int16_t // TODO should be unsigned (?)
m_size_in = 0 #// Size of file (without header) // int32_t // TODO should be unsigned (?)
m_size_out = 0 #// Size of output data // int32_t // TODO should be unsigned (?)
m_flags = 0 #// bit 0=stereo, bit 1=16bit // int8_t
m_compression = 0 #// 1=WW compressed, 99=IMA ADPCM (0x63) // int8_t
m_populated = False
def __init__(self):
return
#//The rest of the AUD files is divided in chunks. These are usually 512
#//bytes long, except for the last one.
class AudChunkHeader:
m_ch_size_in = 0 #// Size of compressed data // int16_t // TODO should be unsigned (?)
m_ch_size_out = 0 #// Size of output data // int16_t // TODO should be unsigned (?)
m_ch_id = 0x0000FFFF #// Always 0x0000DEAF // int32_t
def __init__(self):
return
#
#
#
class audFile:
m_header = AudHeader()
m_traceModeEnabled = False
m_simpleAudioFileName = 'GENERIC.AUD'
# traceModeEnabled is bool to enable more printed debug messages
def __init__(self, traceModeEnabled = True):
self.m_simpleAudioFileName = 'GENERIC.AUD'
self.m_traceModeEnabled = traceModeEnabled
return
# std::fstream& fs, AudFileNS::pos_type startAudFilepos, AudFileNS::pos_type endAudFilepos, const std::string& filename
def export_as_wav(self, audBytesBuff, filename):
if (not self.header().m_populated):
print "[Error] file was not loaded properly (header info missing): " + filename
return 1
print "[Info] Exporting to wav: " + filename
cvirtualBinaryD = None
if self.header().m_compression > 0:
cvirtualBinaryD = self.decode(self.header().m_compression, audBytesBuff)
elif self.header().m_flags == 2: # compression 0, 16bit stereo
cbinaryDataOutLst = []
offsInAudFile = SIZE_OF_AUD_HEADER_IN_BYTES
for i in range(0, (len(audBytesBuff) - SIZE_OF_AUD_HEADER_IN_BYTES) / 2):
tmpTupleL = struct.unpack_from('B', audBytesBuff, offsInAudFile)
offsInAudFile += 1
tmpTupleH = struct.unpack_from('B', audBytesBuff, offsInAudFile)
offsInAudFile += 1
cbinaryDataOutLst.append(tmpTupleL[0])
cbinaryDataOutLst.append(tmpTupleH[0])
cvirtualBinaryD = struct.pack('B'*len(cbinaryDataOutLst), *cbinaryDataOutLst)
if (not cvirtualBinaryD and (len(audBytesBuff) - SIZE_OF_AUD_HEADER_IN_BYTES) > 0):
print "[Error] audio file could not be exported properly (0 data read): %s" % (filename)
return 1
elif (len(audBytesBuff) - SIZE_OF_AUD_HEADER_IN_BYTES) == 0:
print "[Warning] Creating empty wav file: %s" % (filename)
cb_sample = self.get_cb_sample()
cs_remaining = self.get_c_samples()
waveWritFile = wave.open(filename, 'wb')
waveWritFile.setnchannels(self.get_c_channels())
waveWritFile.setsampwidth(cb_sample)
waveWritFile.setframerate(self.get_samplerate())
waveWritFile.setnframes(cs_remaining)
#waveWritFile.setcomptype(None, '')
waveWritFile.writeframesraw(cvirtualBinaryD)
waveWritFile.close()
# t_wav_header header;
# memset(&header, 0, sizeof(t_wav_header));
# header.file_header.id = wav_file_id; // # "RIFF"
# header.file_header.size = sizeof(header) - sizeof(header.file_header) + (cs_remaining << 1);
# header.form_type = wav_form_id; // # "WAVE"
# header.format_chunk.header.id = wav_format_id; // #"fmt "
# header.format_chunk.header.size = sizeof(header.format_chunk) - sizeof(header.format_chunk.header);
# header.format_chunk.formattag = 1;
# header.format_chunk.c_channels = 1;
# header.format_chunk.samplerate = get_samplerate();
# header.format_chunk.byterate = cb_sample * get_samplerate();
# header.format_chunk.blockalign = cb_sample;
# header.format_chunk.cbits_sample = cb_sample << 3;
# header.data_chunk_header.id = wav_data_id; # "data"
# header.data_chunk_header.size = cb_sample * cs_remaining;
# error = f.write(&header, sizeof(t_wav_header));
# return error ? error : f.write(d);
return 0 # TODO fix
def loadAudFile(self, audBytesBuff, maxLength, audFileName):
self.m_simpleAudioFileName = audFileName
offsInAudFile = 0
tmpTuple = struct.unpack_from('H', audBytesBuff, offsInAudFile)
self.header().m_samplerate = tmpTuple[0]
offsInAudFile += 2
tmpTuple = struct.unpack_from('I', audBytesBuff, offsInAudFile)
self.header().m_size_in = tmpTuple[0]
offsInAudFile += 4
tmpTuple = struct.unpack_from('I', audBytesBuff, offsInAudFile)
self.header().m_size_out = tmpTuple[0]
offsInAudFile += 4
tmpTuple = struct.unpack_from('B', audBytesBuff, offsInAudFile)
self.header().m_flags = tmpTuple[0]
offsInAudFile += 1
tmpTuple = struct.unpack_from('B', audBytesBuff, offsInAudFile)
self.header().m_compression = tmpTuple[0]
offsInAudFile += 1
if self.m_traceModeEnabled:
print "[Debug] Sample rate: %d\tsizeIn: %d\tsizeOut: %d\tflags: %d\tcompression: %d" % (self.get_samplerate(), self.header().m_size_in, self.header().m_size_out, self.header().m_flags, self.header().m_compression)
if self.get_samplerate() < 8000 or self.get_samplerate() > 48000 or self.header().m_size_in > (maxLength - SIZE_OF_AUD_HEADER_IN_BYTES ):
print "[Warning] Bad AUD Header info in file %s, size_in: %d, maxLen: %d" % (self.m_simpleAudioFileName, self.header().m_size_in, (maxLength - SIZE_OF_AUD_HEADER_IN_BYTES))
if self.header().m_size_in == 0:
# handle special case where only the header of the AUD file is present and the size_in is 0.
# fill the header with "valid" info for an empty wav file
self.header().m_size_out = 0
self.header().m_samplerate = 22050
self.header().m_compression = 0
self.header().m_flags = 2
self.header().m_populated = True
return True
else:
return False
else:
if self.header().m_compression == 1:
if (self.header().m_flags != 0):
return False
elif self.header().m_compression == 0x63:
if (self.header().m_flags != 2):
return False
elif self.header().m_compression == 0: # no compression. At least some AUD files in SFX.MIX have this
if (self.header().m_flags != 2):
return False
self.header().m_populated = True
return True
# int AudFile::get_chunk_header(int i, std::fstream& fs, AudFileNS::pos_type startAudFilepos, AudFileNS::pos_type endAudFilepos, AudChunkHeader& outAudChunkHeader)
def get_chunk_header(self, chunkIdx, inAudFileBytesBuffer, inAudFileSize ):
#fs.seekg(int(startAudFilepos) + int(SIZE_OF_AUD_HEADER_IN_BYTES), fs.beg);
#AudFileNS::pos_type rAudPos;
#rAudPos = fs.tellg();
outAudChunkHeader = AudChunkHeader()
rAudPos = SIZE_OF_AUD_HEADER_IN_BYTES
#AudChunkHeader tmpInremediateChunkheader;
tmpInremediateChunkheader = AudChunkHeader()
#while (i--) # value of i is decreased after checked by while loop
while(chunkIdx > 0):
chunkIdx -= 1
if (rAudPos + SIZE_OF_AUD_CHUNK_HEADER_IN_BYTES > inAudFileSize):
return (-1, rAudPos, None)
tmpAudFileOffset = rAudPos
tmpTuple = struct.unpack_from('H', inAudFileBytesBuffer, tmpAudFileOffset)
tmpInremediateChunkheader.m_ch_size_in = tmpTuple[0]
tmpAudFileOffset += 2
tmpTuple = struct.unpack_from('H', inAudFileBytesBuffer, tmpAudFileOffset)
tmpInremediateChunkheader.m_ch_size_out = tmpTuple[0]
tmpAudFileOffset += 2
tmpTuple = struct.unpack_from('I', inAudFileBytesBuffer, tmpAudFileOffset)
tmpInremediateChunkheader.m_ch_id = tmpTuple[0]
tmpAudFileOffset += 4
#fs.read((char*)&tmpInremediateChunkheader, SIZE_OF_AUD_CHUNK_HEADER_IN_BYTES);
rAudPos += SIZE_OF_AUD_CHUNK_HEADER_IN_BYTES + tmpInremediateChunkheader.m_ch_size_in
#fs.seekg(int(rAudPos), fs.beg);
if (rAudPos + SIZE_OF_AUD_CHUNK_HEADER_IN_BYTES > inAudFileSize ):
return (-1, rAudPos, None)
# write to FINAL output chunk header
tmpAudFileOffset = rAudPos
tmpTuple = struct.unpack_from('H', inAudFileBytesBuffer, tmpAudFileOffset)
outAudChunkHeader.m_ch_size_in = tmpTuple[0]
tmpAudFileOffset += 2
tmpTuple = struct.unpack_from('H', inAudFileBytesBuffer, tmpAudFileOffset)
outAudChunkHeader.m_ch_size_out = tmpTuple[0]
tmpAudFileOffset += 2
tmpTuple = struct.unpack_from('I', inAudFileBytesBuffer, tmpAudFileOffset)
outAudChunkHeader.m_ch_id = tmpTuple[0]
tmpAudFileOffset += 4
#fs.read((char*)&outAudChunkHeader, SIZE_OF_AUD_CHUNK_HEADER_IN_BYTES);
if (rAudPos + SIZE_OF_AUD_CHUNK_HEADER_IN_BYTES + outAudChunkHeader.m_ch_size_in > inAudFileSize):
return (-1, rAudPos, None)
rAudPos += SIZE_OF_AUD_CHUNK_HEADER_IN_BYTES
return (0, rAudPos, outAudChunkHeader) # //reinterpret_cast<const AudChunkHeader*>(r);
# int AudFile::get_chunk_data(int i, std::fstream& fs, int sizeToRead, AudFileNS::byte* byteChunkDataPtr)
def get_chunk_data(self, inAudFileBytesBuffer, startOffs, sizeToRead):
#fs.read((char*)byteChunkDataPtr, sizeToRead)
outChunkDataLst = []
#print "[Debug] startOffs: %d, sizeToRead: %d" % (startOffs, sizeToRead)
for i in range(startOffs, startOffs + sizeToRead):
#outChunkDataLst.append(ctypes.c_char(inAudFileBytesBuffer[i]).value)
#outChunkDataLst.append(ctypes.c_byte(inAudFileBytesBuffer[i]).value)
tmpTuple = struct.unpack_from('B', inAudFileBytesBuffer, i)
outChunkDataLst.append(tmpTuple[0])
#byteChunkDataOut = struct.pack('b'*len(outChunkDataLst), *outChunkDataLst)
#return (0, byteChunkDataOut)
return (0, outChunkDataLst)
# std::fstream& fs, AudFileNS::pos_type startAudFilepos, AudFileNS::pos_type endAudFilepos
# returned Cvirtual_binary
def decode(self, speccompression, audBytesBuff):
# The * operator unpacks an argument list. It allows you to call a function with the list items as individual arguments.
# binDataOut = struct.pack('i'*len(data), *data)
if self.m_traceModeEnabled:
print "[Debug] Decoding AUD file format..."
# Cvirtual_binary d;
binaryDataOutLst = []
binaryDataOutBuff = None
cb_audio = self.get_cb_sample() * self.get_c_samples() # int cb_audio - basically this should be the size_out
if speccompression == 1:
# write_start allocates space for virtualBinary
# AudFileNS::byte* w = d.write_start(cb_audio);
errGetChunk = 0 # int errGetChunk
#for (int chunk_i = 0; w != d.data_end(); chunk_i++)
chunk_i = 0
wIndex = 0
while (wIndex < cb_audio):
#AudChunkHeader out_chunk_header;
#out_chunk_header = AudChunkHeader()
(errGetChunk, bufferDataPos, out_chunk_header) = self.get_chunk_header(chunk_i, audBytesBuff, len(audBytesBuff))
if errGetChunk != 0:
# print "[Warning] Error OR End file case while getting uncompressed chunk header!"
break
#print "[Debug] Get uncompressed chunk header returned: %d " % (out_chunk_header.m_ch_id)
#Cvirtual_binary out_chunk_data;
#AudFileNS::byte* byteChunkDataPtr = out_chunk_data.write_start(out_chunk_header.m_ch_size_in);
(errorGCD, byteChunkDataLst) = self.get_chunk_data(audBytesBuff, bufferDataPos, out_chunk_header.m_ch_size_in)
# export decoded chunk to w (output) buffer (of CHARS) at the point where we're currently at (so append there)
decodedAudioChunkAsLst = aud_decode_ws_chunk(byteChunkDataLst, out_chunk_header.m_ch_size_in, out_chunk_header.m_ch_size_out)
binaryDataOutLst.extend(decodedAudioChunkAsLst)
wIndex += out_chunk_header.m_ch_size_out
chunk_i += 1
binaryDataOutBuff = struct.pack('b'*len(binaryDataOutLst), *binaryDataOutLst)
elif speccompression == 0x63:
decodeInstance = audFileDecode(self.m_traceModeEnabled);
#decodeInstance.init();
#AudFileNS::byte* w = d.write_start(cb_audio);
errGetChunk = 0 # int errGetChunk
# for (int chunk_i = 0; w != d.data_end(); chunk_i++)
chunk_i = 0
wIndex = 0
while (wIndex < cb_audio):
#print("[Debug] chunkI: %d\t Windex: %d\t cb_audio: %d") % (chunk_i,wIndex,cb_audio)
#AudChunkHeader out_chunk_header;
#out_chunk_header = AudChunkHeader()
#errGetChunk = self.get_chunk_header(chunk_i, fs, startAudFilepos, endAudFilepos, out_chunk_header);
(errGetChunk, bufferDataPos, out_chunk_header) = self.get_chunk_header(chunk_i, audBytesBuff, len(audBytesBuff))
if errGetChunk != 0:
print "[Warning] Error OR End file case while getting COMPRESSED chunk header!"
break
#print "[Debug] Get COMPRESSED chunk header returned:: headerInSize: %d headerOutSize: %d id: %d" % (out_chunk_header.m_ch_size_in, out_chunk_header.m_ch_size_out, out_chunk_header.m_ch_id)
#Cvirtual_binary out_chunk_data;
#AudFileNS::byte* byteChunkDataPtr = out_chunk_data.write_start(out_chunk_header.m_ch_size_in);
(errorGCD, byteChunkDataLst) = self.get_chunk_data(audBytesBuff, bufferDataPos, out_chunk_header.m_ch_size_in)
# export decoded chunk to w (output) buffer (of SHORTS) at the point where we're currently at (so append there)
#print "[Debug] byteChunkDataLst len: %d, m_ch_size_in was: %d" % (len(byteChunkDataLst), out_chunk_header.m_ch_size_in)
decodedAudioChunkAsLst = decodeInstance.decode_chunk(byteChunkDataLst, out_chunk_header.m_ch_size_out / self.get_cb_sample());
binaryDataOutLst.extend(decodedAudioChunkAsLst)
wIndex += out_chunk_header.m_ch_size_out
#print("[Debug] New Windex: %d\t cb_audio: %d") % (wIndex,cb_audio)
chunk_i += 1
binaryDataOutBuff = struct.pack('h'*len(binaryDataOutLst), *binaryDataOutLst)
if self.m_traceModeEnabled:
if binaryDataOutBuff is not None:
if self.m_traceModeEnabled:
print "[Debug] Decoding Done."
else: #if binaryDataOutBuff is None:
print "[Error] Decoding yielded errors (data out buffer is null)."
return binaryDataOutBuff
def header(self):
return self.m_header
def get_c_samples(self):
return self.m_header.m_size_out / self.get_cb_sample()
def get_samplerate(self):
return self.m_header.m_samplerate;
# flag bit 0 is stereo(set) mono(clear)
def get_c_channels(self):
return 2 if (self.m_header.m_flags & 0x01) else 1;
# flag bit 1 is 16bit(set) 8bit (clear)
def get_cb_sample(self):
return 2 if (self.m_header.m_flags & 0x02) else 1
#
#
#
if __name__ == '__main__':
# main()
# (by default) assumes a file of name 000000.AUD in same directory
# otherwise tries to use the first command line argument as input file
inAUDFile = None
inAUDFileName = '00000000.AUD'
if len(sys.argv[1:]) > 0 \
and os.path.isfile(os.path.join('.', sys.argv[1])) \
and len(sys.argv[1]) > 5 \
and sys.argv[1][-3:] == 'AUD':
inAUDFileName = sys.argv[1]
print "[Info] Using %s as input AUD file..." % (inAUDFileName)
errorFound = False
try:
inAUDFile = open(os.path.join('.', inAUDFileName), 'rb')
except:
errorFound = True
print "[Error] Unexpected event:", sys.exc_info()[0]
raise
if not errorFound:
allOfAudFileInBuffer = inAUDFile.read()
audFileInstance = audFile(True)
if audFileInstance.m_traceModeEnabled:
print "[Debug] Running %s (%s) as main module" % (MY_MODULE_NAME, MY_MODULE_VERSION)
audFileInstance.loadAudFile(allOfAudFileInBuffer, len(allOfAudFileInBuffer), inAUDFileName)
audFileInstance.export_as_wav(allOfAudFileInBuffer, './tmp.wav')
inAUDFile.close()
else:
#debug
#print "[Debug] Running %s (%s) imported from another module" % (MY_MODULE_NAME, MY_MODULE_VERSION)
pass
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