भू-चैट, हानिकारक बॉट और स्टेग्नोग्राफ़ी: टेलीग्राम के बारे में ज्ञान को समृद्ध करना

fh = open(input_file, "r+b")
fh.seek(20)
fh.write(b'\x01\x00')
fh.close()

file = wave.open(input_file,"r")
    for i in range (1, int(file.getnframes()/490)+1):
        frames = file.readframes(490)
        bit = 0
        sum = 0
        for k in range(0, 246):
            frame_bytes = frames[k*2:k*2+2]
            sum += int.from_bytes(frame_bytes, "big")
        if sum/490 > 16000:
            bit = 1
        bits.append(bit)

bytes = []    
for i in range (1, int(len(bits)/8)+1):
        b1 = bits[i*8-8]
        b2 = bits[i*8-7]
        b3 = bits[i*8-6]
        b4 = bits[i*8-5]
        b5 = bits[i*8-4]
        b6 = bits[i*8-3]
        b7 = bits[i*8-2]
        b8 = bits[i*8-1]
        byte = (b1 << 7) | (b2 << 6) | (b3 << 5) | (b4 << 4) | (b5 << 3) | (b6 << 2) | (b7 << 1) | b8
        bytes.append(byte.to_bytes(1, byteorder='big')) 

sample_rate = 98000.0
def generate_silence(duration_milliseconds=5):
    fragment = []
    num_samples = duration_milliseconds * (sample_rate / 1000.0)
    for x in range(int(num_samples)): 
        fragment.append(0.0)
    return fragment

def generate_sinewave(
        freq=41000.0, 
        duration_milliseconds=5, 
        volume=0.5):
    fragment = []
    amplitude = volume * 32767.0
    num_samples = duration_milliseconds * (sample_rate / 1000.0)
    for x in range(int(num_samples)):
        fragment.append(amplitude * math.sin(2 * math.pi * freq * ( x / sample_rate )))
    return fragment

    audio = []
    f = open(input_file, 'rb')
    for character in f.read():
        a = character
        b8 = a & 0b00000001 
        b7 = (a & 0b00000010) >> 1 
        b6 = (a & 0b00000100) >> 2
        b5 = (a & 0b00001000) >> 3
        b4 = (a & 0b00010000) >> 4
        b3 = (a & 0b00100000) >> 5
        b2 = (a & 0b01000000) >> 6
        b1 = (a & 0b10000000) >> 7
        if b1 == 1:
            audio += generate_sinewave()
        else:
            audio += generate_silence()
        if b2 == 1:
            audio += generate_sinewave()
        else:
            audio += generate_silence()
        if b3 == 1:
            audio += generate_sinewave()
        else:
            audio += generate_silence()
        if b4 == 1:
            audio += generate_sinewave()
        else:
            audio += generate_silence()
        if b5 == 1:
            audio += generate_sinewave()
        else:
            audio += generate_silence()
        if b6 == 1:
            audio += generate_sinewave()
        else:
            audio += generate_silence()
        if b7 == 1:
            audio += generate_sinewave()
        else:
            audio += generate_silence()
        if b8 == 1:
            audio += generate_sinewave()
        else:
            audio += generate_silence()

wav_file=wave.open(file_name,"w")
    nchannels = 1
    sampwidth = 2
    nframes = len(audio)
    comptype = "NONE"
    compname = "not compressed"
    wav_file.setparams((nchannels, sampwidth, sample_rate, nframes, comptype, compname))
    for sample in audio:
        wav_file.writeframes(struct.pack('h', int(sample)))
    wav_file.close()