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Refactor. CD maybe working?

This commit is contained in:
Neale Pickett 2022-08-25 10:17:25 -06:00
parent 2860a1405c
commit 91a332ca53
13 changed files with 329 additions and 286 deletions
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1
.vscode/settings.json vendored
View File

@ -10,6 +10,7 @@
"gnudb",
"newfn",
"RDONLY",
"cdparanoia",
"TTITLE"
]
}

13
Dockerfile
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@ -7,24 +7,17 @@ RUN true \
&& sed -i 's/main$/main contrib non-free/' /etc/apt/sources.list \
&& apt-get -y update \
&& DEBIAN_FRONTEND=noninteractive apt-get --no-install-recommends -y install \
ffmpeg \
handbrake-cli libavcodec-extra \
abcde eyed3 \
glyrc setcd eject \
dvdbackup \
libdvd-pkg libdvdcss2 \
handbrake-cli libavcodec-extra \
cd-discid cdparanoia lame \
python3 \
cowsay \
python3-slugify \
&& true
RUN dpkg-reconfigure libdvd-pkg
RUN true \
&& DEBIAN_FRONTEND=noninteractive apt-get --no-install-recommends -y install \
lame \
busybox \
jq \
procps \
moreutils \
cowsay
COPY src/* /app/

7
README.md
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@ -14,6 +14,13 @@ At the time I'm writing this README, it will:
* ~~Rip audio CDs, look them up in cddb, encode them to VBR MP3, then tag them.~~ A rewrite broke this; I plan to fix it soon.
* Rip video DVDs, transcode them to mkv
## Requirements
* HandBrakeCLI
* cdparanoia
* cd-discid
*
## How To Run This
You need a place to store your stuff.

54
doc/architecture.md Normal file
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@ -0,0 +1,54 @@
# Web Server
There is one web server,
which provides static content,
and a single entrypoint for dynamic state information.
The static content is some HTML and JavaScript,
which the browser runs to pull the dynamic state,
and update the page with current status of everything.
# Workers
There are at least two Workers:
a Reader and an Encoder.
Each Worker runs in its own thread,
and can do its job without interfering with another Worker.
## Readers
Readers monitor a device for media.
Right now, those devices are always CD-ROM drives.
As soon as media is inserted,
a MediaHandler is created to scan and then copy it.
## Encoders
Encoders wait for jobs to show up,
and then they re-invoke a MediaHandler to encode everything in that job.
# MediaHandlers
MediaHandlers have a work directory,
where they store all their stuff.
They have the following stages of execution:
1. *scan* the media to figure out its title, list of tracks, and other metadata
2. *copy* the media to the work directory
3. *encode* the work directory into the desired format (eg. MP3, MKV)
4. *clean* the work directory
Before each step,
state is read out of the work directory.
During each step,
a MediaHandler continually updates its Worker with a completion percentage.
This is passed up to the Web Server's dynamic state.
After each step,
a MediaHandler updates its state,
which is stored on disk.
The only way to communicate state between execution stages is by writing to disk.
This provides some tolerance of job interruption, power loss, etc.

82
src/cd.py
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@ -13,7 +13,7 @@ SECOND = 1
MINUTE = 60 * SECOND
HOUR = 60 * MINUTE
def read(device, status):
def scan(state, device):
# Get disc ID
p = subprocess.run(
[
@ -24,7 +24,7 @@ def read(device, status):
capture_output=True,
)
discid = p.stdout.strip()
status["discid"] = discid
state["discid"] = discid
# Look it up in cddb
email = os.environ.get("EMAIL") # You should really set this variable, tho
@ -42,23 +42,24 @@ def read(device, status):
# We're expected to be automatic here,
# so just use the first one.
for k in ("title", "artist", "genre", "year", "tracks"):
status[k] = disc[k]
state[k] = disc[k]
else:
now = time.strftime("%Y-%m-%dT%H%M%S")
num_tracks = int(discid.split()[1])
status["title"] = "Unknown CD - %s" % now
status["tracks"] = ["Track %02d" % i for i in range(num_tracks)]
state["title"] = "Unknown CD - %s" % now
state["tracks"] = ["Track %02d" % i for i in range(num_tracks)]
def rip(device, status, directory):
def copy(state, device, directory):
# cdparanoia reports completion in samples
# use discid duration to figure out total number of samples
duration = int(status["discid"].split()[-1]) * SECOND # disc duration in seconds
duration = int(state["discid"].split()[-1]) * SECOND # disc duration in seconds
total_samples = duration * (75 / SECOND) * 1176 # 75 sectors per second, 1176 samples per sector
status["total_samples"] = total_samples
state["total_samples"] = total_samples
track_num = 1
for track_name in status["tracks"]:
logging.debug("Ripping track %d of %d", track_num, len(status["tracks"]))
for track_name in state["tracks"]:
logging.debug("Ripping track %d of %d", track_num, len(state["tracks"]))
p = subprocess.Popen(
[
"cdparanoia",
@ -76,16 +77,17 @@ def rip(device, status, directory):
line = line.strip()
if line.startswith("##: -2"):
samples = int(line.split()[-1])
status["complete"] = samples / total_samples
yield samples / total_samples
track_num += 1
def encode(status, directory):
def encode(state, directory):
track_num = 1
durations = [int(d) for d in status["discid"].split()[2:-1]]
durations = [int(d) for d in state["discid"].split()[2:-1]]
total_duration = sum(durations)
encoded_duration = 0
for track_name in status["tracks"]:
for track_name in state["tracks"]:
logging.debug("Encoding track %d (%s)" % (track_num, track_name))
duration = durations[track_num-1]
argv = [
@ -94,15 +96,15 @@ def encode(status, directory):
"--nohist",
"--disptime", "1",
"--preset", "standard",
"--tl", status["title"],
"--tn", "%d/%d" % (track_num, len(status["tracks"])),
"--tl", state["title"],
"--tn", "%d/%d" % (track_num, len(state["tracks"])),
]
if status.get("artist"):
argv.extend(["--ta", status["artist"]])
if status.get("genre"):
argv.extend(["--tg", status["genre"]])
if status.get("year"):
argv.extend(["--ty", status["year"]])
if state.get("artist"):
argv.extend(["--ta", state["artist"]])
if state.get("genre"):
argv.extend(["--tg", state["genre"]])
if state.get("year"):
argv.extend(["--ty", state["year"]])
if track_name:
argv.extend(["--tt", track_name])
outfn = "%02d - %s.mp3" % (track_num, track_name)
@ -122,34 +124,38 @@ def encode(status, directory):
p = line.split("(")[1]
p = p.split("%")[0]
pct = int(p) / 100
status["complete"] = (encoded_duration + (duration * pct)) / total_duration
print(status["complete"])
yield (encoded_duration + (duration * pct)) / total_duration
encoded_duration += duration
track_num += 1
def clean(state, directory):
pass
if __name__ == "__main__":
import pprint
import sys
import json
if len(sys.argv) > 1:
directory = sys.argv[1]
fn = os.path.join(directory, "status.json")
f = open(fn)
status = json.load(f)
else:
logging.basicConfig(level=logging.DEBUG)
status = {}
read("/dev/sr0", status)
pprint.pprint(status)
directory = os.path.join(".", status["title"])
state = {}
scan(state, "/dev/sr0")
pprint.pprint(state)
directory = os.path.join(".", state["title"])
os.makedirs(directory, exist_ok=True)
rip("/dev/sr0", status, directory)
pprint.pprint(status)
with open(os.path.join(directory, "state.json"), "w") as f:
json.dump(f, state)
encode(status, directory)
pprint.pprint(status)
for pct in copy(state, "/dev/sr0", directory):
sys.stdout.write("Copying: %3d%%\r" % (pct*100))
pprint.pprint(state)
for pct in encode(state, directory):
sys.stdout.write("Encoding: %3d%%\r" % (pct*100))
pprint.pprint(state)
# vi: sw=4 ts=4 et ai

75
src/dvd.py
View File

@ -10,37 +10,29 @@ SECOND = 1
MINUTE = 60 * SECOND
HOUR = 60 * MINUTE
class Copier:
def __init__(self, device, status):
self.device = device
self.status = status
self.scan()
def collect(self, track):
def collect(collection, track):
newCollection = []
for t in self.collection:
for t in collection:
if t["length"] == track["length"]:
# If the length is exactly the same,
# assume it's the same track,
# and pick the one with the most stuff.
if len(track["audio"]) < len(t["audio"]):
return
return collection
elif len(track["subp"]) < len(t["subp"]):
return
return collection
newCollection.append(t)
newCollection.append(track)
self.collection = newCollection
return newCollection
def scan(self):
self.status["state"] = "scanning"
self.collection = []
def scan(state, device):
p = subprocess.run(
[
"lsdvd",
"-Oy",
"-x",
self.device,
device,
],
encoding="utf-8",
capture_output=True,
@ -51,7 +43,7 @@ class Copier:
title = lsdvd["provider_id"]
if title == "$PACKAGE_STRING":
title = "DVD"
now = time.strftime("%Y-%m-%dT%H%M%S")
now = time.strftime(r"%Y-%m-%dT%H%M%S")
title = "%s %s" % (title, now)
# Go through all the tracks, looking for the largest referenced sector.
@ -71,25 +63,23 @@ class Copier:
# * A feature, which has one track much longer than any other
# * A collection of shows, which has several long tracks, more or less the same lengths
# * Something else
collection = []
for track in tracks:
if track["length"] / max_length > 0.80:
self.collect(track)
if (max_length < 20 * MINUTE) and (len(self.collection) < len(track) * 0.6):
self.collection = tracks
collection = collect(track)
if (max_length < 20 * MINUTE) and (len(collection) < len(track) * 0.6):
collection = tracks
self.status["title"] = title
self.status["size"] = max_sector * 2048 # DVD sector size = 2048
self.status["tracks"] = [(t["ix"], t["length"]) for t in self.collection]
def copy(self, directory):
self.status["state"] = "copying"
state["title"] = title
state["size"] = max_sector * 2048 # DVD sector size = 2048
state["tracks"] = [(t["ix"], t["length"]) for t in collection]
def copy(state, device, directory):
p = subprocess.Popen(
[
"dvdbackup",
"--input=" + self.device,
"--name=" + self.status["title"],
"--input=" + device,
"--name=" + state["title"],
"--mirror",
"--progress",
],
@ -110,30 +100,25 @@ class Copier:
if titleSize < lastTitleSize:
totalBytes += lastTitleSize
lastTitleSize = titleSize
self.status["complete"] = (totalBytes + titleSize) / self.status["size"]
yield (totalBytes + titleSize) / state["size"]
class Encoder:
def __init__(self, basedir, status):
self.basedir = basedir
self.status = status
def encode(state, directory):
title = state["title"]
logging.info("encoding: %s (%s)" % (title, directory))
def encode(self, obj):
title = obj["title"]
logging.info("encoding: %s (%s)" % (title, self.basedir))
total_length = sum(t[1] for t in obj["tracks"])
total_length = sum(t[1] for t in state["tracks"])
finished_length = 0
for track, length in obj["tracks"]:
for track, length in state["tracks"]:
outfn = "%s-%d.mkv" % (title, track)
tmppath = os.path.join(self.basedir, outfn)
outpath = os.path.join(self.basedir, "..", outfn)
tmppath = os.path.join(directory, outfn)
outpath = os.path.join(directory, "..", outfn)
p = subprocess.Popen(
[
"nice",
"HandBrakeCLI",
"--json",
"--input", "%s/VIDEO_TS" % self.basedir,
"--input", "%s/VIDEO_TS" % directory,
"--output", tmppath,
"--title", str(track),
"--native-language", "eng",
@ -160,7 +145,7 @@ class Encoder:
if m:
progress = float(m[1])
complete = (finished_length + progress*length) / total_length
self.status["complete"] = complete
state["complete"] = complete
finished_length += length
os.rename(
@ -170,6 +155,10 @@ class Encoder:
logging.info("Finished track %d; length %d" % (track, length))
def clean(state, directory):
pass
if __name__ == "__main__":
import pprint
vts = Video(".")

40
src/encoder.py
View File

@ -1,7 +1,6 @@
#! /usr/bin/python3
import os
import threading
import subprocess
import glob
import os
@ -13,40 +12,41 @@ import re
import logging
import dvd
import cd
import worker
class Encoder(threading.Thread):
def __init__(self, directory=None, **kwargs):
class Encoder(worker.Worker):
def __init__(self, directory=None):
self.status = {}
self.directory = directory
return super().__init__(**kwargs)
return super().__init__(directory)
def run(self):
while True:
wait = True
self.status = {"type": "encoder", "state": "idle"}
for fn in glob.glob(os.path.join(self.directory, "*", "sucker.json")):
fdir = os.path.dirname(fn)
with open(fn) as f:
obj = json.load(f)
self.encode(fdir, obj)
for fn in glob.glob(self.workdir("*", "state.json")):
self.encode(os.path.dirname(fn), obj)
wait = False
if wait:
time.sleep(12)
def encode(self, fdir, obj):
def encode(self, directory, obj):
self.status["state"] = "encoding"
self.status["title"] = obj["title"]
if obj["type"] == "audio":
self.encode_audio(fdir, obj)
state = self.read_state(directory)
self.status["title"] = state["title"]
if state["video"]:
media = dvd
else:
self.encode_video(fdir, obj)
shutil.rmtree(fdir)
media = cd
def encode_audio(self, fdir, obj):
cd.encode(obj, fdir)
logging.info("Encoding %s (%s)" % (directory, state["title"]))
for pct in media.encode(state, directory):
self.status["complete"] = pct
def encode_video(self, fdir, obj):
enc = dvd.Encoder(fdir, self.status)
enc.encode(obj)
media.clean(state, directory)
logging.info("Finished encoding")
# vi: sw=4 ts=4 et ai

6
src/mediahandler.py Normal file
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@ -0,0 +1,6 @@
class MediaHandler:
def __init__(self, basedir, state):
self.basedir = basedir
self.state = state
def

61
src/reader.py
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@ -1,7 +1,6 @@
#! /usr/bin/python3
import os
import threading
import subprocess
import time
import re
@ -9,8 +8,10 @@ import fcntl
import traceback
import json
import logging
import slugify
import dvd
import cd
import worker
CDROM_DRIVE_STATUS = 0x5326
CDS_NO_INFO = 0
@ -28,25 +29,21 @@ CDS_DATA_2 = 102
CDROM_LOCKDOOR = 0x5329
CDROM_EJECT = 0x5309
class Reader(threading.Thread):
def __init__(self, device, directory=None, **kwargs):
class Reader(worker.Worker):
def __init__(self, device, directory):
super().__init__(device)
self.device = device
self.directory = directory
self.status = {
"type": "reader",
"state": "idle",
"device": self.device,
}
self.status["type"] = "reader"
self.status["device"] = device
self.complete = 0
self.staleness = 0
self.drive = None
logging.info("Starting reader on %s" % self.device)
return super().__init__(**kwargs)
def reopen(self):
if (self.staleness > 15) or not self.drive:
if self.drive:
self.drive.close()
os.close(self.drive)
self.drive = None
try:
self.drive = os.open(self.device, os.O_RDONLY | os.O_NONBLOCK)
@ -69,9 +66,9 @@ class Reader(threading.Thread):
rv = fcntl.ioctl(self.drive, CDROM_DISC_STATUS)
try:
if rv == CDS_AUDIO:
self.handle_audio()
self.handle(false)
elif rv in [CDS_DATA_1, CDS_DATA_2]:
self.handle_data()
self.handle(true)
else:
logging.info("Can't handle disc type %d" % rv)
except Exception as e:
@ -96,32 +93,26 @@ class Reader(threading.Thread):
logging.error("Ejecting: %v" % e)
time.sleep(i * 5)
# XXX: rename this to something like "write_status"
def finished(self, **kwargs):
self.status["state"] = "finished read"
fn = os.path.join(self.directory, self.status["title"], "sucker.json")
newfn = fn + ".new"
with open(newfn, "w") as fout:
json.dump(obj=self.status, fp=fout)
os.rename(src=newfn, dst=fn)
def handle_audio(self):
self.status["video"] = False
def handle(self, video):
self.status["video"] = video
self.status["state"] = "reading"
cd.read(self.device, self.status)
directory = os.path.join(self.directory, status["title"])
os.makedirs(directory, exist_ok=True)
state = {}
state["video"] = video
if video:
media = cd
else:
media = dvd
media.scan(state, self.device)
self.status["title"] = state["title"]
subdir = slugify.slugify(state["title"])
self.status["state"] = "copying"
cd.copy(self.device, self.status, self.directory)
self.finished() # XXX: rename this to something like "write_status"
for pct in media.copy(device, self.workdir(subdir)):
self.status["complete"] = pct
self.write_state(subdir, state)
def handle_data(self):
self.status["video"] = True
src = dvd.Copier(self.device, self.status)
src.copy(self.directory)
self.finished()
# vi: sw=4 ts=4 et ai

25
src/state.py
View File

@ -1,25 +0,0 @@
#! /usr/bin/python3
import json
class State(dict):
def __init__(self, path):
super().__init__()
self.path = path
self.read()
def read(self):
try:
f = open(self.path)
except FileNotFoundError:
return
obj = json.load(f)
f.close()
for k in obj:
self[k] = obj[k]
def write(self):
f = open(self.path, "w")
json.dump(self, f)
f.close()

6
src/statuser.py
View File

@ -7,17 +7,17 @@ import time
import os
class Statuser(threading.Thread):
def __init__(self, workers, directory=None, **kwargs):
def __init__(self, workers, directory):
self.workers = workers
self.directory = directory
self.status = {}
super().__init__(**kwargs)
super().__init__(daemon=True)
def run(self):
while True:
self.status["finished"] = {
"video": glob.glob(os.path.join(self.directory, "*.mkv")),
"audio": glob.glob(os.path.join(self.directory, "*/*/*.mp3")),
"audio": glob.glob(os.path.join(self.directory, "*/*.mp3")),
}
self.status["workers"] = [w.status for w in self.workers]
time.sleep(12)

10
src/sucker.py
View File

@ -33,13 +33,9 @@ def main():
logging.basicConfig(level=logging.INFO)
readers = []
for d in args.drive:
readers.append(reader.Reader(d, directory=args.incoming, daemon=True))
encoders = []
for i in range(1):
encoders.append(encoder.Encoder(directory=args.incoming, daemon=True))
st = statuser.Statuser(readers + encoders, directory=args.incoming, daemon=True)
readers = [reader.Reader(d, args.incoming) for d in args.drive]
encoders = [encoder.Encoder(args.incoming) for i in range(1)]
st = statuser.Statuser(readers + encoders, args.incoming)
[w.start() for w in readers + encoders]
st.start()

25
src/worker.py Normal file
View File

@ -0,0 +1,25 @@
import threading
import os
import json
class Worker(threading.Thread):
def __init__(self, directory, **kwargs):
self.directory = directory
self.status = {
"state": "idle",
"directory": directory,
}
kwargs["daemon"] = True
return super().__init__(**kwargs)
def workdir(self, *path):
return os.path.join(self.directory, *path)
def write_state(self, subdir, state):
with open(self.workdir(subdir, "state.json"), "w") as f:
json.dump(f, state)
def read_state(self, subdir):
with open(self.workdir(subdir, "state.json")) as f:
return json.load(f)