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1854284029
ffplayout/ffplayout.py
jb-alvarado 1854284029 dummy clips should have real length
2019-03-27 09:34:13 +01:00

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#!/usr/bin/env python3
# -*- coding: utf-8 -*-
# This file is part of ffplayout.
#
# ffplayout is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# ffplayout is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with ffplayout. If not, see <http://www.gnu.org/licenses/>.
# ------------------------------------------------------------------------------
import configparser
import json
import logging
import os
import smtplib
import socket
import sys
from argparse import ArgumentParser
from ast import literal_eval
from datetime import date, datetime, timedelta
from email.mime.multipart import MIMEMultipart
from email.mime.text import MIMEText
from email.utils import formatdate
from logging.handlers import TimedRotatingFileHandler
from shutil import copyfileobj
from subprocess import PIPE, CalledProcessError, Popen, check_output
from threading import Thread
from time import sleep
from types import SimpleNamespace
# ------------------------------------------------------------------------------
# read variables from config file
# ------------------------------------------------------------------------------
# read config
cfg = configparser.ConfigParser()
if os.path.exists("/etc/ffplayout/ffplayout.conf"):
cfg.read("/etc/ffplayout/ffplayout.conf")
else:
cfg.read("ffplayout.conf")
_general = SimpleNamespace(
stop=cfg.getboolean('GENERAL', 'stop_on_error'),
threshold=cfg.getfloat('GENERAL', 'stop_threshold')
)
_mail = SimpleNamespace(
subject=cfg.get('MAIL', 'subject'),
server=cfg.get('MAIL', 'smpt_server'),
port=cfg.getint('MAIL', 'smpt_port'),
s_addr=cfg.get('MAIL', 'sender_addr'),
s_pass=cfg.get('MAIL', 'sender_pass'),
recip=cfg.get('MAIL', 'recipient')
)
_log = SimpleNamespace(
path=cfg.get('LOGGING', 'log_file'),
level=cfg.get('LOGGING', 'log_level')
)
_pre_comp = SimpleNamespace(
w=cfg.getint('PRE_COMPRESS', 'width'),
h=cfg.getint('PRE_COMPRESS', 'height'),
aspect=cfg.getfloat(
'PRE_COMPRESS', 'width') / cfg.getfloat('PRE_COMPRESS', 'height'),
fps=cfg.getint('PRE_COMPRESS', 'fps'),
v_bitrate=cfg.getint('PRE_COMPRESS', 'v_bitrate'),
v_bufsize=cfg.getint('PRE_COMPRESS', 'v_bitrate') / 2,
logo=cfg.get('PRE_COMPRESS', 'logo'),
logo_filter=cfg.get('PRE_COMPRESS', 'logo_filter'),
protocols=cfg.get('PRE_COMPRESS', 'live_protocols'),
copy=cfg.getboolean('PRE_COMPRESS', 'copy_mode'),
copy_settings=literal_eval(cfg.get('PRE_COMPRESS', 'ffmpeg_copy_settings'))
)
_playlist = SimpleNamespace(
path=cfg.get('PLAYLIST', 'playlist_path'),
t=cfg.get('PLAYLIST', 'day_start').split(':'),
start=0,
filler=cfg.get('PLAYLIST', 'filler_clip'),
blackclip=cfg.get('PLAYLIST', 'blackclip'),
shift=cfg.getint('PLAYLIST', 'time_shift'),
map_ext=cfg.get('PLAYLIST', 'map_extension')
)
_playlist.start = float(_playlist.t[0]) * 3600 + float(_playlist.t[1]) * 60 \
+ float(_playlist.t[2])
_buffer = SimpleNamespace(
length=cfg.getint('BUFFER', 'buffer_length'),
tol=cfg.getfloat('BUFFER', 'buffer_tolerance'),
cli=cfg.get('BUFFER', 'buffer_cli'),
cmd=literal_eval(cfg.get('BUFFER', 'buffer_cmd'))
)
_playout = SimpleNamespace(
preview=cfg.getboolean('OUT', 'preview'),
name=cfg.get('OUT', 'service_name'),
provider=cfg.get('OUT', 'service_provider'),
out_addr=cfg.get('OUT', 'out_addr'),
post_comp_video=literal_eval(cfg.get('OUT', 'post_comp_video')),
post_comp_audio=literal_eval(cfg.get('OUT', 'post_comp_audio')),
post_comp_extra=literal_eval(cfg.get('OUT', 'post_comp_extra')),
post_comp_copy=literal_eval(cfg.get('OUT', 'post_comp_copy'))
)
# ------------------------------------------------------------------------------
# logging
# ------------------------------------------------------------------------------
stdin_parser = ArgumentParser(
description="python and ffmpeg based playout",
epilog="don't use parameters if you want to take the settings from config")
stdin_parser.add_argument(
"-l", "--log", help="file path for logfile"
)
stdin_parser.add_argument(
"-f", "--file", help="playlist file"
)
# If the log file is specified on the command line then override the default
stdin_args = stdin_parser.parse_args()
if stdin_args.log:
_log.path = stdin_args.log
logger = logging.getLogger(__name__)
logger.setLevel(_log.level)
handler = TimedRotatingFileHandler(_log.path, when="midnight", backupCount=5)
formatter = logging.Formatter('[%(asctime)s] [%(levelname)s] %(message)s')
handler.setFormatter(formatter)
logger.addHandler(handler)
# capture stdout and sterr in the log
class PlayoutLogger(object):
def __init__(self, logger, level):
self.logger = logger
self.level = level
def write(self, message):
# Only log if there is a message (not just a new line)
if message.rstrip() != "":
self.logger.log(self.level, message.rstrip())
def flush(self):
pass
# Replace stdout with logging to file at INFO level
sys.stdout = PlayoutLogger(logger, logging.INFO)
# Replace stderr with logging to file at ERROR level
sys.stderr = PlayoutLogger(logger, logging.ERROR)
# ------------------------------------------------------------------------------
# mail sender
# ------------------------------------------------------------------------------
# send error messages to email addresses
def mailer(message, time, path):
if _mail.recip:
msg = MIMEMultipart()
msg['From'] = _mail.s_addr
msg['To'] = _mail.recip
msg['Subject'] = _mail.subject
msg["Date"] = formatdate(localtime=True)
msg.attach(MIMEText('{} {}\n{}'.format(time, message, path), 'plain'))
text = msg.as_string()
try:
server = smtplib.SMTP(_mail.server, _mail.port)
except socket.error as err:
logger.error(err)
server = None
if server is not None:
server.starttls()
try:
login = server.login(_mail.s_addr, _mail.s_pass)
except smtplib.SMTPAuthenticationError as serr:
logger.error(serr)
login = None
if login is not None:
server.sendmail(_mail.s_addr, _mail.recip, text)
server.quit()
# ------------------------------------------------------------------------------
# global helper functions
# ------------------------------------------------------------------------------
# get time
def get_time(time_format):
t = datetime.today() + timedelta(seconds=_playlist.shift)
if time_format == 'hour':
return t.hour
elif time_format == 'full_sec':
sec = float(t.hour * 3600 + t.minute * 60 + t.second)
micro = float(t.microsecond) / 1000000
return sec + micro
elif time_format == 'stamp':
return float(datetime.now().timestamp())
else:
return t.strftime("%H:%M:%S")
# get date
def get_date(seek_day):
d = date.today() + timedelta(seconds=_playlist.shift)
if get_time('full_sec') < _playlist.start and seek_day:
yesterday = d - timedelta(1)
return yesterday.strftime('%Y-%m-%d')
else:
return d.strftime('%Y-%m-%d')
# check if input file exist
def file_exist(in_file):
if os.path.exists(in_file):
return True
else:
return False
# test if value is float
def is_float(value):
try:
float(value)
return True
except ValueError:
return False
# test if value is int
def is_int(value):
try:
int(value)
return True
except ValueError:
return False
# calculating the size for the buffer in KB
def calc_buffer_size():
# in copy mode files has normally smaller bit rate,
# so we calculate the size different
if _pre_comp.copy:
list_date = get_date(True)
year, month, day = list_date.split('-')
json_file = os.path.join(
_playlist.path, year, month, list_date + '.json')
if file_exist(json_file):
with open(json_file) as f:
clip_nodes = json.load(f)
if _playlist.map_ext:
_ext = literal_eval(_playlist.map_ext)
source = clip_nodes["program"][0]["source"].replace(
_ext[0], _ext[1])
else:
source = clip_nodes["program"][0]["source"]
cmd = [
'ffprobe', '-v', 'error', '-show_entries', 'format=bit_rate',
'-of', 'default=noprint_wrappers=1:nokey=1', source]
bite_rate = check_output(cmd).decode('utf-8')
if is_int(bite_rate):
bite_rate = int(bite_rate) / 1024
else:
bite_rate = 4000
return int(bite_rate * 0.125 * _buffer.length)
else:
return 5000
else:
return int((_pre_comp.v_bitrate * 0.125 + 281.25) * _buffer.length)
# check if processes a well
def check_process(play_thread, playout, mbuffer):
while True:
sleep(4)
if playout.poll() is not None:
logger.error(
'postprocess is not alive anymore, terminate ffplayout!')
mbuffer.terminate()
break
if not play_thread.is_alive():
logger.error(
'preprocess is not alive anymore, terminate ffplayout!')
mbuffer.terminate()
break
# compare clip play time with real time,
# to see if we are sync
def check_sync(begin):
time_now = get_time('full_sec')
# in copy mode buffer length can not be calculatet correctly...
if _pre_comp.copy:
tolerance = 60
else:
tolerance = _buffer.tol
check_time = _buffer.length + tolerance
t_dist = begin - time_now - _buffer.length - _buffer.tol
if 0 <= time_now < _playlist.start and not begin == _playlist.start:
t_dist -= 86400.0
# check that we are in tolerance time
if not check_time * -1 < t_dist < check_time:
mailer(
'Playlist is not sync!', get_time(None),
'{} seconds async'.format(t_dist)
)
logger.error('Playlist is {} seconds async!'.format(t_dist))
if _general.stop and abs(t_dist) > _general.threshold:
logger.error('Sync tolerance value exceeded, program is terminated')
sys.exit(1)
# check begin and length
def check_start_and_length(json_nodes, counter):
# check start time and set begin
if "begin" in json_nodes:
h, m, s = json_nodes["begin"].split(':')
if is_float(h) and is_float(m) and is_float(s):
begin = float(h) * 3600 + float(m) * 60 + float(s)
else:
begin = -100.0
else:
begin = -100.0
# check if playlist is long enough
if "length" in json_nodes:
l_h, l_m, l_s = json_nodes["length"].split(':')
if is_float(l_h) and is_float(l_m) and is_float(l_s):
length = float(l_h) * 3600 + float(l_m) * 60 + float(l_s)
total_play_time = begin + counter - _playlist.start
if "date" in json_nodes:
date = json_nodes["date"]
else:
date = get_date(True)
if total_play_time < length - 5:
mailer(
'json playlist ({}) is not long enough!'.format(date),
get_time(None), "total play time is: {}".format(
timedelta(seconds=total_play_time))
)
logger.error('Playlist is only {} hours long!'.format(
timedelta(seconds=total_play_time)))
# validate json values in new Thread
# and test if file path exist
# TODO: we need better and unique validation,
# now it is messy - the file get readed twice
# and values get multiple time evaluate
# IDEA: open one time the playlist,
# not in a thread and build from it a new clean dictionary
def validate_thread(clip_nodes):
def check_json(json_nodes):
error = ''
counter = 0
# check if all values are valid
for node in json_nodes["program"]:
if _playlist.map_ext:
_ext = literal_eval(_playlist.map_ext)
source = node["source"].replace(
_ext[0], _ext[1])
else:
source = node["source"]
prefix = source.split('://')[0]
if prefix in _pre_comp.protocols:
cmd = [
'ffprobe', '-v', 'error',
'-show_entries', 'format=duration',
'-of', 'default=noprint_wrappers=1:nokey=1', source]
try:
output = check_output(cmd).decode('utf-8')
except CalledProcessError:
output = '404'
if '404' in output:
a = 'Stream not exist:" {}"\n'.format(source)
else:
a = ''
elif file_exist(source):
a = ''
else:
a = 'File not exist: "{}"\n'.format(source)
if is_float(node["in"]) and is_float(node["out"]):
b = ''
counter += node["out"] - node["in"]
else:
b = 'Missing Value in: "{}"\n'.format(node)
c = '' if is_float(node["duration"]) else 'No duration Value! '
line = a + b + c
if line:
logger.error('Validation error :: {}'.format(line))
error += line + 'In line: {}\n'.format(node)
if error:
mailer(
'Validation error, check json playlist, values are missing:\n',
get_time(None), error
)
check_start_and_length(json_nodes, counter)
validate = Thread(name='check_json', target=check_json, args=(clip_nodes,))
validate.daemon = True
validate.start()
# seek in clip
def seek_in(seek):
if seek > 0.0:
return ['-ss', str(seek)]
else:
return []
# cut clip length
def set_length(duration, seek, out):
if out < duration:
return ['-t', str(out - seek)]
else:
return []
# generate a dummy clip, with black color and empty audiotrack
def gen_dummy(duration):
if _pre_comp.copy:
return ['-i', _playlist.blackclip, '-t', str(duration)]
else:
color = '#121212'
# TODO: add noise could be an config option
# noise = 'noise=alls=50:allf=t+u,hue=s=0'
return [
'-f', 'lavfi', '-i',
'color=c={}:s={}x{}:d={}:r={},format=pix_fmts=yuv420p'.format(
color, _pre_comp.w, _pre_comp.h, duration, _pre_comp.fps
),
'-f', 'lavfi', '-i', 'anoisesrc=d={}:c=pink:r=48000:a=0.01'.format(
duration),
'-shortest'
]
# when source path exist, generate input with seek and out time
# when path not exist, generate dummy clip
def src_or_dummy(src, dur, seek, out):
if src:
prefix = src.split('://')[0]
# check if input is a live source
if prefix in _pre_comp.protocols:
return seek_in(seek) + ['-i', src] + set_length(dur, seek, out)
elif file_exist(src):
return seek_in(seek) + ['-i', src] + set_length(dur, seek, out)
else:
mailer('Clip not exist:', get_time(None), src)
logger.error('Clip not exist: {}'.format(src))
return gen_dummy(out - seek)
else:
return gen_dummy(out - seek)
# prepare input clip
# check begin and length from clip
# return clip only if we are in 24 hours time range
def gen_input(src, begin, dur, seek, out, last):
day_in_sec = 86400.0
ref_time = day_in_sec + _playlist.start
time = get_time('full_sec')
if 0 <= time < _playlist.start:
time += day_in_sec
# calculate time difference to see if we are sync
time_diff = _buffer.length + _buffer.tol + out - seek + time
if (time_diff <= ref_time or begin < day_in_sec) and not last:
# when we are in the 24 houre range, get the clip
return src_or_dummy(src, dur, seek, out, out - seek), None
elif time_diff < ref_time and last:
# when last clip is passed and we still have too much time left
# check if duration is larger then out - seek
time_diff = _buffer.length + _buffer.tol + dur + time
new_len = dur - (time_diff - ref_time)
logger.info('we are under time, new_len is: {}'.format(new_len))
if time_diff >= ref_time:
if src == _playlist.filler:
# when filler is something like a clock,
# is better to start the clip later and to play until end
src_cmd = src_or_dummy(src, dur, dur - new_len, dur)
else:
src_cmd = src_or_dummy(src, dur, 0, new_len)
else:
src_cmd = src_or_dummy(src, dur, 0, dur)
mailer(
'Playlist is not long enough:', get_time(None),
'{} seconds needed.'.format(new_len)
)
logger.error('Playlist is {} seconds to short'.format(new_len))
return src_cmd, new_len - dur
elif time_diff > ref_time:
new_len = out - seek - (time_diff - ref_time)
# when we over the 24 hours range, trim clip
logger.info('we are over time, new_len is: {}'.format(new_len))
if new_len > 5.0:
if src == _playlist.filler:
src_cmd = src_or_dummy(src, dur, out - new_len, out)
else:
src_cmd = src_or_dummy(src, dur, seek, new_len)
elif new_len > 1.0:
src_cmd = gen_dummy(new_len)
else:
src_cmd = None
return src_cmd, 0.0
# blend logo and fade in / fade out
def build_filtergraph(first, duration, seek, out, ad, ad_last, ad_next, dummy):
length = out - seek - 1.0
logo_chain = []
logo_filter = []
video_chain = []
audio_chain = []
video_map = ['-map', '[logo]']
scale = 'scale={}:{},setdar=dar={}[s]'.format(
_pre_comp.w, _pre_comp.h, _pre_comp.aspect)
if seek > 0.0 and not first:
video_chain.append('fade=in:st=0:d=0.5')
audio_chain.append('afade=in:st=0:d=0.5')
if out < duration:
video_chain.append('fade=out:st={}:d=1.0'.format(length))
audio_chain.append('apad,afade=out:st={}:d=1.0'.format(length))
else:
audio_chain.append('apad')
if video_chain:
video_fade = '[s]{}[v]'.format(','.join(video_chain))
else:
video_fade = '[s]null[v]'
audio_filter = [
'-filter_complex', '[0:a]{}[a]'.format(','.join(audio_chain))]
audio_map = ['-shortest', '-map', '[a]']
if os.path.exists(_pre_comp.logo):
if not ad:
opacity = 'format=rgba,colorchannelmixer=aa=0.7'
loop = 'loop=loop={}:size=1:start=0'.format(
(out - seek) * _pre_comp.fps)
logo_chain.append('movie={},{},{}'.format(
_pre_comp.logo, loop, opacity))
if ad_last:
logo_chain.append('fade=in:st=0:d=1.0:alpha=1')
if ad_next:
logo_chain.append('fade=out:st={}:d=1.0:alpha=1'.format(length))
if not ad:
logo_filter = '{}[l];[v][l]{}[logo]'.format(
','.join(logo_chain), _pre_comp.logo_filter)
else:
logo_filter = '[v]null[logo]'
else:
logo_filter = '[v]null[logo]'
video_filter = [
'-filter_complex', '[0:v]{};{};{}'.format(
scale, video_fade, logo_filter)]
if _pre_comp.copy:
return []
elif dummy:
return video_filter + video_map + ['-map', '1:a']
else:
return video_filter + audio_filter + video_map + audio_map
# ------------------------------------------------------------------------------
# main functions
# ------------------------------------------------------------------------------
# read values from json playlist
class GetSourceIter:
def __init__(self):
self.last_time = get_time('full_sec')
if 0 <= self.last_time < _playlist.start:
self.last_time += 86400
self.last_mod_time = 0.0
self.json_file = None
self.clip_nodes = None
self.src_cmd = None
self.filtergraph = []
self.first = True
self.last = False
self.list_date = get_date(True)
self.is_dummy = False
self.has_begin = False
self.init_time = get_time('full_sec')
self.last_error = ''
self.timestamp = get_time('stamp')
self.src = None
self.seek = 0
self.out = 20
self.duration = 20
self.ad = False
self.ad_last = False
self.ad_next = False
def get_playlist(self):
if stdin_args.file:
self.json_file = stdin_args.file
else:
year, month, day = self.list_date.split('-')
self.json_file = os.path.join(
_playlist.path, year, month, self.list_date + '.json')
if file_exist(self.json_file):
# check last modification from playlist
mod_time = os.path.getmtime(self.json_file)
if mod_time > self.last_mod_time:
with open(self.json_file, 'r', encoding='utf-8') as f:
self.clip_nodes = json.load(f)
self.last_mod_time = mod_time
logger.info('open: ' + self.json_file)
validate_thread(self.clip_nodes)
else:
# when we have no playlist for the current day,
# then we generate a black clip
# and calculate the seek in time, for when the playlist comes back
self.error_handling('Playlist not exist:')
# when begin is in playlist, get start time from it
if self.clip_nodes and "begin" in self.clip_nodes:
h, m, s = self.clip_nodes["begin"].split(':')
if is_float(h) and is_float(m) and is_float(s):
self.has_begin = True
self.init_time = float(h) * 3600 + float(m) * 60 + float(s)
else:
self.has_begin = False
def url_or_live_source(self):
prefix = self.src.split('://')[0]
# check if input is a live source
if prefix in _pre_comp.protocols:
cmd = [
'ffprobe', '-v', 'error', '-show_entries', 'format=duration',
'-of', 'default=noprint_wrappers=1:nokey=1', self.src]
try:
output = check_output(cmd).decode('utf-8')
except CalledProcessError:
output = None
if not output:
self.duration = 20
mailer('Clip not exist:', get_time(None), self.src)
logger.error('Clip not exist: {}'.format(self.src))
self.src = None
self.out = 20
elif is_float(output):
self.duration = float(output)
else:
self.duration = 86400
self.out = self.out - self.seek
self.seek = 0
def map_extension(self, node):
if _playlist.map_ext:
_ext = literal_eval(_playlist.map_ext)
self.src = node["source"].replace(
_ext[0], _ext[1])
else:
self.src = node["source"]
def clip_length(self, node):
if is_float(node["in"]):
self.seek = node["in"]
else:
self.seek = 0
if is_float(node["duration"]):
self.duration = node["duration"]
else:
self.duration = 20
if is_float(node["out"]):
self.out = node["out"]
else:
self.out = self.duration
def get_category(self, index, node):
if 'category' in node:
if index - 1 >= 0:
last_category = self.clip_nodes[
"program"][index - 1]["category"]
else:
last_category = "noad"
if index + 2 <= len(self.clip_nodes["program"]):
next_category = self.clip_nodes[
"program"][index + 1]["category"]
else:
next_category = "noad"
if node["category"] == 'advertisement':
self.ad = True
else:
self.ad = False
if last_category == 'advertisement':
self.ad_last = True
else:
self.ad_last = False
if next_category == 'advertisement':
self.ad_next = True
else:
self.ad_next = False
def set_filtergraph(self):
self.filtergraph = build_filtergraph(
self.first, self.duration, self.seek, self.out,
self.ad, self.ad_last, self.ad_next, self.is_dummy)
def check_source(self):
if self.src_cmd and 'lavfi' in self.src_cmd:
self.is_dummy = True
else:
self.is_dummy = False
def error_handling(self, message):
self.seek = 0.0
self.out = 20
self.duration = 20
self.ad = False
day_in_sec = 86400.0
ref_time = day_in_sec + _playlist.start
time = get_time('full_sec')
if 0 <= time < _playlist.start:
time += day_in_sec
time_diff = _buffer.length + _buffer.tol + self.out - self.seek + time
new_len = self.out - self.seek - (time_diff - ref_time)
if new_len <= 1800:
self.out = abs(new_len)
self.duration = abs(new_len)
self.list_date = get_date(False)
self.last_mod_time = 0.0
self.first = False
self.last_time = 0.0
else:
self.list_date = get_date(True)
self.src_cmd = gen_dummy(self.out - self.seek)
self.is_dummy = True
self.set_filtergraph()
if get_time('stamp') - self.timestamp > 3600 \
and message != self.last_error:
self.last_error = message
mailer(message, get_time(None), self.json_file)
self.timestamp = get_time('stamp')
logger.error('{} {}'.format(message, self.json_file))
self.last = False
def next(self):
while True:
self.get_playlist()
if self.clip_nodes is None:
self.is_dummy = True
self.set_filtergraph()
yield self.src_cmd, self.filtergraph
continue
self.begin = self.init_time
# loop through all clips in playlist
for index, node in enumerate(self.clip_nodes["program"]):
self.map_extension(node)
self.clip_length(node)
# first time we end up here
if self.first and \
self.last_time < self.begin + self.out - self.seek:
if self.has_begin:
# calculate seek time
self.seek = self.last_time - self.begin + self.seek
self.url_or_live_source()
self.src_cmd, self.time_left = gen_input(
self.src, self.begin, self.duration,
self.seek, self.out, False
)
self.check_source()
self.get_category(index, node)
self.set_filtergraph()
self.first = False
self.last_time = self.begin
break
elif self.last_time < self.begin:
if index + 1 == len(self.clip_nodes["program"]):
self.last = True
else:
self.last = False
if self.has_begin:
check_sync(self.begin)
self.url_or_live_source()
self.src_cmd, self.time_left = gen_input(
self.src, self.begin, self.duration,
self.seek, self.out, self.last
)
self.check_source()
self.get_category(index, node)
self.set_filtergraph()
if self.time_left is None:
# normal behavior
self.last_time = self.begin
elif self.time_left > 0.0:
# when playlist is finish and we have time left
self.list_date = get_date(False)
self.last_time = self.begin
self.out = self.time_left
self.error_handling('Playlist is not valid!')
else:
# when there is no time left and we are in time,
# set right values for new playlist
self.list_date = get_date(False)
self.last_time = _playlist.start - 5
self.last_mod_time = 0.0
break
self.begin += self.out - self.seek
else:
# when we reach currect end, stop script
if "begin" not in self.clip_nodes or \
"length" not in self.clip_nodes and \
self.begin < get_time('full_sec'):
logger.info('Playlist reach End!')
return
# when playlist exist but is empty, or not long enough,
# generate dummy and send log
self.error_handling('Playlist is not valid!')
if self.src_cmd is not None:
yield self.src_cmd, self.filtergraph
# independent thread for clip preparation
def play_clips(out_file, GetSourceIter):
# send current file to buffer stdin
iter = GetSourceIter()
for src_cmd, filtergraph in iter.next():
if _pre_comp.copy:
ff_pre_settings = _pre_comp.copy_settings
else:
ff_pre_settings = filtergraph + [
'-pix_fmt', 'yuv420p', '-r', str(_pre_comp.fps),
'-c:v', 'mpeg2video', '-intra',
'-b:v', '{}k'.format(_pre_comp.v_bitrate),
'-minrate', '{}k'.format(_pre_comp.v_bitrate),
'-maxrate', '{}k'.format(_pre_comp.v_bitrate),
'-bufsize', '{}k'.format(_pre_comp.v_bufsize),
'-c:a', 's302m', '-strict', '-2', '-ar', '48000', '-ac', '2',
'-threads', '2', '-f', 'mpegts', '-'
]
try:
if src_cmd[0] == '-i':
current_file = src_cmd[1]
else:
current_file = src_cmd[3]
logger.info('play: "{}"'.format(current_file))
file_piper = Popen(
[
'ffmpeg', '-v', 'error', '-hide_banner', '-nostats'
] + src_cmd + list(ff_pre_settings),
stdout=PIPE,
bufsize=0
)
copyfileobj(file_piper.stdout, out_file)
finally:
file_piper.wait()
def main():
year = get_date(False).split('-')[0]
try:
# open a buffer for the streaming pipeline
# stdin get the files loop
# stdout pipes to ffmpeg rtmp streaming
mbuffer = Popen(
[_buffer.cli] + list(_buffer.cmd)
+ ['{}k'.format(calc_buffer_size())],
stdin=PIPE,
stdout=PIPE,
bufsize=0
)
try:
if _playout.preview:
# preview playout to player
playout = Popen([
'ffplay', '-v', 'error',
'-hide_banner', '-nostats', '-i', 'pipe:0'],
stdin=mbuffer.stdout,
bufsize=0
)
else:
# playout to rtmp
if _pre_comp.copy:
playout_pre = [
'ffmpeg', '-v', 'info', '-hide_banner', '-nostats',
'-re', '-i', 'pipe:0', '-c', 'copy'
] + _playout.post_comp_copy
else:
playout_pre = [
'ffmpeg', '-v', 'info', '-hide_banner', '-nostats',
'-re', '-thread_queue_size', '256',
'-fflags', '+igndts', '-i', 'pipe:0',
'-fflags', '+genpts'
] + _playout.post_comp_video + \
_playout.post_comp_audio
playout = Popen(
list(playout_pre)
+ [
'-metadata', 'service_name=' + _playout.name,
'-metadata', 'service_provider=' + _playout.provider,
'-metadata', 'year=' + year
] + list(_playout.post_comp_extra)
+ [
_playout.out_addr
],
stdin=mbuffer.stdout,
bufsize=0
)
play_thread = Thread(
name='play_clips', target=play_clips, args=(
mbuffer.stdin,
GetSourceIter,
)
)
play_thread.daemon = True
play_thread.start()
check_process(play_thread, playout, mbuffer)
finally:
playout.wait()
finally:
mbuffer.wait()
if __name__ == '__main__':
main()
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