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play_audio_book.py
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play_audio_book.py
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from striprtf.striprtf import rtf_to_text
from epub_conversion.utils import open_book, convert_epub_to_lines
from multiprocessing import Process, current_process
from bs4 import BeautifulSoup
from termcolor import cprint
from gtts.lang import tts_langs
from gtts import gTTS
import time
import os
import json
import sys
import signal
import tempfile
import subprocess
# CONFIG ---------------------------------------------------------
default_language = 'English'
default_accent = 'Indian'
progress_filename = 'audio_book_progress.json'
aggressive_saving = True
default_playback_speed = 1.5
default_seconds_between_lines = 0.0
extra_lines_to_backtrack_when_darkening_previous_lines = 1
maximum_line_length = 75
# CODE ------------------------------------------------------------
ACCENT_TO_TLD_DICT = {
'American': 'us',
'Australian': 'com.au',
'Brazilian': 'com.br',
'Canadian': 'ca',
'English': 'co.uk',
'French': 'fr',
'Indian': 'co.in',
'Ireland': 'ie',
'Mexican': 'com.mx',
'Nigerian': 'com.ng',
'Portueguese': 'pt',
'South African': 'co.za',
'Spanish': 'es',
}
LANGUAGE_TO_LANG_CODE = {
v: k
for k, v
in tts_langs().items()
}
# pretty print
def pprint(text) -> None:
cprint(text, "light_grey", "on_black", attrs=["bold"])
print = pprint
def darken_previous_line(printable_lines) -> None:
# Cursor up one line
sys.stdout.write(
"\033[F" * (
len(printable_lines)
+ extra_lines_to_backtrack_when_darkening_previous_lines
)
)
for printable_line in printable_lines:
cprint(printable_line, "dark_grey", "on_black", attrs=["bold"])
temp_mp3_filename = tempfile.NamedTemporaryFile().name
process = None
line_index_human_readable = 1
book_location = os.path.abspath(sys.argv[1])
def graceful_exit(sig, frame):
if current_process().name != 'MainProcess':
return
print(f'Exiting gracefully...')
save_progress(book_location, line_index_human_readable)
process.terminate()
os.system('stty sane')
exit()
def skip_line(sig, frame):
process.terminate()
signal.signal(signal.SIGINT, graceful_exit)
signal.signal(signal.SIGTSTP, skip_line)
def read_sentence_impl(text, playback_speed, tld, lang_code):
myobj = gTTS(text=text, lang=lang_code, tld=tld, slow=False)
myobj.save(temp_mp3_filename)
command = f'ffplay -autoexit -v quiet -nodisp -af "atempo={playback_speed}" {temp_mp3_filename}'
subprocess.call(command, shell=True)
def call_read_sentence(text, playback_speed, seconds_between_lines, tld, lang_code):
global process
process = Process(target=read_sentence_impl, args=(text, playback_speed, tld, lang_code))
process.start()
while process.is_alive():
time.sleep(.5)
time.sleep(seconds_between_lines)
def save_progress(audio_book_filename, line_index_human_readable):
try:
with open(progress_filename) as f:
progress_file_obj = json.load(f)
except:
progress_file_obj = {}
progress_file_obj[audio_book_filename] = line_index_human_readable
with open(progress_filename, 'w') as f:
json.dump(progress_file_obj, f)
f.flush()
def load_progress(audio_book_filename):
for arg_index, argument in enumerate(sys.argv):
if argument == '--line':
return int(sys.argv[arg_index + 1])
try:
with open(progress_filename) as f:
progress_file_obj = json.load(f)
except:
progress_file_obj = {}
return progress_file_obj.get(audio_book_filename, 1)
def get_playback_speed_multiplier():
for arg_index, argument in enumerate(sys.argv):
if argument == '--speed':
return float(sys.argv[arg_index + 1])
return default_playback_speed
def get_seconds_between_lines():
for arg_index, argument in enumerate(sys.argv):
if argument == '--seconds-between-lines':
return float(sys.argv[arg_index + 1])
return default_seconds_between_lines
def get_accent():
for arg_index, argument in enumerate(sys.argv):
if argument == '--accent':
return sys.argv[arg_index + 1]
return default_accent
def get_language():
for arg_index, argument in enumerate(sys.argv):
if argument == '--language':
return sys.argv[arg_index + 1]
return default_language
def get_lines_to_print(line_index_human_readable, text, chunk_length=maximum_line_length):
printable_lines = ['--']
text = f'{line_index_human_readable}: {text}'
current_line = []
current_line_length = 0
for word in text.split(' '):
word_length = len(word)
would_be_current_line_length = current_line_length + word_length + 1
if current_line_length + word_length <= chunk_length:
current_line_length = would_be_current_line_length
current_line.append(word)
else:
printable_lines.append(' '.join(current_line))
current_line = [word]
current_line_length = len(word)
if current_line:
printable_lines.append(' '.join(current_line))
return printable_lines
def print_lines(printable_lines):
for printable_line in printable_lines:
print(printable_line)
if __name__ == '__main__':
starting_line_index_human_readable = load_progress(book_location)
starting_line_index_human_readable = max(starting_line_index_human_readable, 1)
playback_speed = get_playback_speed_multiplier()
seconds_between_lines = get_seconds_between_lines()
accent = get_accent()
tld = ACCENT_TO_TLD_DICT.get(accent)
language = get_language()
lang_code = LANGUAGE_TO_LANG_CODE.get(language)
if not tld:
raise RuntimeError(f'Invalid accent. Choices are: {list(ACCENT_TO_TLD_DICT.keys())}')
if not lang_code:
raise RuntimeError(f'Invalid language. Choices are: {list(LANGUAGE_TO_LANG_CODE.keys())}')
lines = []
if book_location.endswith('.rtf'):
with open(book_location) as f:
possible_lines = f.read().split('.')
for line in possible_lines:
line = rtf_to_text(line).strip()
if line:
lines.append(line)
elif book_location.endswith('.epub'):
book = open_book(book_location)
for line in convert_epub_to_lines(book):
lines.extend([
sentence.strip()
for sentence in BeautifulSoup(line, features="html.parser").get_text().split('.')
if sentence.strip()
])
else:
with open(book_location) as f:
possible_sentences = f.read().split('.')
possible_lines = []
for sentence in possible_sentences:
possible_lines.extend(sentence.split('\n'))
for line in possible_lines:
line = line.strip()
if line:
lines.append(line)
lines = lines[starting_line_index_human_readable - 1:]
opening_line = f'Reading {sys.argv[1]} starting at line {starting_line_index_human_readable}.'
print(f'\n{opening_line}\n')
print('Press Control + z to skip a line.')
print('Press Control + c to exit.\n')
print(f'{"-" * len(opening_line)}\n')
if aggressive_saving:
for line_index, line in enumerate(lines):
line_index_human_readable = line_index + starting_line_index_human_readable
printable_lines = get_lines_to_print(line_index_human_readable, line)
print_lines(printable_lines)
try:
call_read_sentence(line, playback_speed, seconds_between_lines, tld, lang_code)
except Exception as e:
print(e)
darken_previous_line(printable_lines)
save_progress(book_location, line_index_human_readable)
else:
for line_index, line in enumerate(lines):
line_index_human_readable = line_index + starting_line_index_human_readable
printable_lines = get_lines_to_print(line_index_human_readable, line)
print_lines(printable_lines)
try:
call_read_sentence(line, playback_speed, seconds_between_lines, tld, lang_code)
except Exception as e:
print(e)
darken_previous_line(printable_lines)
graceful_exit(None, None)