funkwhale/api/funkwhale_api/music/utils.py

94 wiersze
2.4 KiB
Python

import mimetypes
import magic
import mutagen
import pydub
from funkwhale_api.common.search import get_fts_query # noqa
from funkwhale_api.common.search import get_query # noqa
from funkwhale_api.common.search import normalize_query # noqa
def guess_mimetype(f):
b = min(1000000, f.size)
t = magic.from_buffer(f.read(b), mime=True)
if not t.startswith("audio/"):
# failure, we try guessing by extension
mt, _ = mimetypes.guess_type(f.name)
if mt:
t = mt
return t
def compute_status(jobs):
statuses = jobs.order_by().values_list("status", flat=True).distinct()
errored = any([status == "errored" for status in statuses])
if errored:
return "errored"
pending = any([status == "pending" for status in statuses])
if pending:
return "pending"
return "finished"
AUDIO_EXTENSIONS_AND_MIMETYPE = [
("ogg", "video/ogg"),
("ogg", "audio/ogg"),
("opus", "audio/opus"),
("mp3", "audio/mpeg"),
("aac", "audio/x-m4a"),
("m4a", "audio/x-m4a"),
("flac", "audio/x-flac"),
("flac", "audio/flac"),
]
EXTENSION_TO_MIMETYPE = {ext: mt for ext, mt in AUDIO_EXTENSIONS_AND_MIMETYPE}
MIMETYPE_TO_EXTENSION = {mt: ext for ext, mt in AUDIO_EXTENSIONS_AND_MIMETYPE}
SUPPORTED_EXTENSIONS = list(
sorted(set([ext for ext, _ in AUDIO_EXTENSIONS_AND_MIMETYPE]))
)
def get_ext_from_type(mimetype):
return MIMETYPE_TO_EXTENSION.get(mimetype)
def get_type_from_ext(extension):
if extension.startswith("."):
# we remove leading dot
extension = extension[1:]
return EXTENSION_TO_MIMETYPE.get(extension)
def get_audio_file_data(f):
data = mutagen.File(f)
if not data:
return
d = {}
d["bitrate"] = getattr(data.info, "bitrate", 0)
d["length"] = data.info.length
return d
def get_actor_from_request(request):
actor = None
if hasattr(request, "actor"):
actor = request.actor
elif request.user.is_authenticated:
actor = request.user.actor
return actor
def transcode_file(input, output, input_format, output_format, **kwargs):
with input.open("rb"):
audio = pydub.AudioSegment.from_file(input, format=input_format)
return transcode_audio(audio, output, output_format, **kwargs)
def transcode_audio(audio, output, output_format, **kwargs):
with output.open("wb"):
return audio.export(output, format=output_format, **kwargs)