media-sucker/encoder.py

90 lines
2.5 KiB
Python

#! /usr/bin/python3
import os
import threading
import subprocess
import glob
import os
import json
import io
import shutil
import time
import re
class Encoder(threading.Thread):
def __init__(self, directory=None, **kwargs):
self.status = {}
self.directory = directory
for d in ("audio", "video"):
os.makedirs(os.path.join(directory, d), exist_ok=True)
return super().__init__(**kwargs)
def run(self):
while True:
wait = True
self.status = {"type": "encoder", "state": "idle"}
for mtype in ("audio", "video"):
for fn in glob.glob(os.path.join(self.directory, mtype, "*", "sucker.json")):
fdir = os.path.dirname(fn)
with open(fn) as f:
obj = json.load(f)
self.encode(mtype, fdir, obj)
wait = False
if wait:
time.sleep(12)
def encode(self, mtype, fdir, obj):
if mtype == "audio":
self.encode_audio(fdir, obj)
else:
self.encode_video(fdir, obj)
shutil.rmtree(fdir)
def encode_audio(self, fdir, obj):
print("Not implemented")
def encode_video(self, fdir, obj):
self.status["state"] = "encoding"
title = os.path.basename(fdir)
self.status["title"] = title
print("encoding", title, fdir)
outfn = "%s.mkv" % title
tmppath = os.path.join(fdir, outfn)
outpath = os.path.join(self.directory, outfn)
p = subprocess.Popen(
[
"HandBrakeCLI",
"--json",
"-i", "%s/VIDEO_TS" % fdir,
"--main-feature",
"--native-language", "eng",
"-Z", "Chromecast 1080p30 Surround",
"-o", tmppath,
],
encoding="utf-8",
stdout=subprocess.PIPE,
stderr=subprocess.DEVNULL,
)
# HandBrakeCLI spits out sort of JSON.
# But Python has no built-in way to stream JSON objects.
# Hence this kludge.
progressRe = re.compile(r'^"Progress": ([0-9.]+),')
for line in p.stdout:
line = line.strip()
m = progressRe.search(line)
if m:
progress = float(m[1])
self.status["complete"] = progress
os.rename(
src=tmppath,
dst=outpath,
)
pass
# vi: sw=4 ts=4 et ai