readm3u

#!/usr/bin/env python3
r"""
Read m3u playlist with a given player.

EXAMPLES::

    readm3u liste.m3u -p mplayer
    readm3u liste.m3u -p omxplayer

.. TODO::

    - Make sure it does not hangs on youtube urls

AUTHORS:

    - Sebastien Labbe, january 2018, initial version
"""
from __future__ import absolute_import, print_function, division, unicode_literals

import sys,os,subprocess,argparse
import m3u8

def main():
    # Parse arguments
    parser = argparse.ArgumentParser()
    parser.add_argument("input", type=str,
                        help="playlist file (.m3u)")
    parser.add_argument("-p", "--player", type=str, default='omxplayer',
                        help="media player")
    parser.add_argument("-v", "--verbose", default=False, action='store_true', 
                        help="print filenames per pages")
    args = parser.parse_args()

    # Read the playlist
    m3u8_obj = m3u8.load(args.input)

    if args.verbose:
        print("Files: ", m3u8_obj.files)

    for segment in m3u8_obj.segments:
        print("[{}s] Titre:{}".format(segment.duration, segment.title))

        # March 25 2018: I keep this code in case the problem reappears
        #if player == 'omxplayer':
        #    # https://www.raspberrypi.org/forums/viewtopic.php?t=116413
        #    # kill previous omxplayer to avoid the following error
        #    # tvservice-client: Failed to connect to TV service: -1
        #    p = subprocess.Popen(['killall', 'omxplayer.bin'],
        #            stdin=subprocess.PIPE,
        #            stdout=None,
        #            stderr=subprocess.PIPE)
        #    out, err = p.communicate()
        #    if not err == b'omxplayer.bin: no process found\n':
        #        print('some omxplayer were running: good thing we stop them')
        #    if args.verbose:
        #        print("out=",out)
        #        print("err=",err)

        path = segment.absolute_uri
        if path.count('\\'):
            path = path.replace('\\','')
        print("    file:{}".format(path))

        if segment.base_path == 'https://www.youtube.com':
            cmd = ['mpsyt', 'playurl', path]
        elif args.player == 'omxplayer':
            # https://github.com/popcornmix/omxplayer/issues/437
            # the option --no-osd prevents omxplayer from hanging
            cmd = [args.player, '--no-osd', path]
        else:
            cmd = [args.player, path]

        if args.verbose:
            print('cmd =',cmd)

        # Option 0
        # ret = os.system(' '.join(cmd))

        # Option 1
        # ret = subprocess.check_call(cmd)
        # print('ret =',ret)

        # Option 2
        # ret = subprocess.check_call(' '.join(cmd), shell=True)
        # print('ret =',ret)

        # Option 3 (is better at least because the terminal is normal after
        # interuption, there is a carriage return)
        p = subprocess.Popen(cmd,
                             stdin=subprocess.PIPE,
                             stdout=subprocess.PIPE,
                             stderr=None)
        out, err = p.communicate()
        if args.verbose:
            print("out=",out)
            print("err=",err)


# NOTES:
# 
# How to use ``subprocess.call`` and friends::
# 
#     >>> subprocess.check_call(['omxplayer', '/home/name/Musique/example.mp3'])
#     Audio codec mp3 channels 1 samplerate 11025 bitspersample 16
#     Subtitle count: 0, state: off, index: 1, delay: 0
#     have a nice day ;)
#     0
# 
# If command is a string, one needs to add ``shell=True``::
# 
#     >>> subprocess.check_call('omxplayer /home/name/Musique/example.mp3', shell=True)
#     Audio codec mp3 channels 1 samplerate 11025 bitspersample 16
#     Subtitle count: 0, state: off, index: 1, delay: 0
#     have a nice day ;)
#     0

if __name__ == '__main__':
    try:
        main()
    except KeyboardInterrupt:
        print('Interrupted')
        try:
            sys.exit(0)
        except SystemExit:
            os._exit(0)