import wave
import argparse
import os.path
import struct

prepare an argument parser

parser = argparse.ArgumentParser(description=’Convert .wav to .bin or C-style Array.’)
parser.add_argument(‘input’)
parser.add_argument(‘-o’,metavar = ‘<output>’)
parser.add_argument(‘-b’,action=’store_true’,help=’Generate .bin file.’,default=True)
parser.add_argument(‘-a’,action=’store_true’,help=’Generate .txt(C-Style Array Source) file.’)
parser.add_argument(‘-r’,action=’store_true’,help=’Reduce bit resorution from 16-bit to 8-bit’)
pres = parser.parse_args()

Set output filename

if pres.o is None:

fwname = pres.input

else:

fwname = pres.o

Set output file’s extension and open file

if pres.b:

fbin = open(fwname + '.bin','wb')

if pres.a:

farr = open(fwname + '.txt','w')

open the wave file

if os.path.exists(pres.input):

wav = wave.open(pres.input,'r')
wInfo = wav.getparams()
print('Filename: ' + pres.input)
print('Number of channels: ' + str(wInfo[0])+ ' [Ch]')
print('Number of frame: ' + str(wInfo[3])+ ' [Frames]')
print('Size of audio data: ' + str(wInfo[3] * wInfo[1] * wInfo[0])+ ' [Bytes]')
print('Sampling rate: ' + str(wInfo[2])+' [Hz]')
print('Sample size: ' + str(wInfo[1])+ ' [Bytes/sample]')
print('Compression: ' + str(wInfo[5]))

else:

print('Error:No such file ' + '\'' + pres.input + '\'')
quit()

Prepare the header for C-Style option

if pres.a:

farr.write('/*\n')
farr.write('Filename: ' + pres.input)
farr.write('File Format: ' + str(wInfo[0]) +'-Ch,' + str(wInfo[1] * 8) + '-Bit,' + str(wInfo[2]) + 'Hz\n')
if pres.r:
    farr.write('Bit resolution is reduced to 8-Bit.\n')
farr.write('*/\n')
#Calc number of element
NoE = wInfo[3] * wInfo[0]
if wInfo[1] == 2 and pres.r is not True:#for 16bit wav without -r option
    farr.write('int16_t wave[' + str(NoE) + ']={\n')
else:
    farr.write('uint8_t wave[' + str(NoE) + ']={\n')

Write the file

for i in range(wInfo[3]):

for i in range(1):

t = wav.readframes(1)
if wInfo[1] == 2:# if Bytes/sample are 2 bytes (16-bit)
    if pres.r:# bit reduce option
        dL = struct.unpack('h',t[0:2])[0]
        dL = int(dL / 256.0) + 128
        if wInfo[0] == 2:#[商品期货](https://www.gendan5.com/futures/cf.html) if file has two channel
            dR = struct.unpack('h',t[2:4])[0]
            dR = int(dR / 256.0) + 128
    else: #treated as unsigned 16bit int
        dL = struct.unpack('H',t[0:2])[0]
        if wInfo[0] == 2:# if file has two channel
            dR = struct.unpack('H',t[2:4])[0]
else:# if Bytes/sample is 1 byte (8-bit)
    dL = t[0]
    if wInfo[0] == 2:# if file has two channel
        dR = t[1]
if pres.b:#Binary output
    if pres.r:
        if wInfo[0] == 2:# if file has two channel
            fbin.write(struct.pack('BB',dL,dR))
        else:
            fbin.write(struct.pack('B',dL))
    else:
        fbin.write(t)
if pres.a:#C-Style Array output
    if wInfo[1] == 2 and pres.r is not True:#for 16bit wav without -r option
        if wInfo[0] == 2:
            farr.write('0x{0:0>4x},0x{1:0>4x}'.format(dL,dR))
        else:
            farr.write('0x{0:0>4x}'.format(dL))
    else:
        if wInfo[0] == 2:
            farr.write('0x{0:0>2x},0x{1:0>2x}'.format(dL,dR))
        else:
            farr.write('0x{0:0>2x}'.format(dL))
    #print comma
    if i != (wInfo[3] - 1):
        farr.write(',')
    #Print New Line
    if wInfo[0] == 2 and (i % 4) == 3:
        farr.write('\n')
    elif wInfo[0] == 1 and (i % 8) == 7:
        farr.write('\n')

if pres.a: #Close the array

farr.write('};\n')

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