mirror of
https://github.com/yt-dlp/yt-dlp.git
synced 2024-12-15 01:56:03 +01:00
129 lines
4.4 KiB
Python
129 lines
4.4 KiB
Python
from __future__ import unicode_literals
|
|
|
|
import functools
|
|
import os
|
|
|
|
from ..compat import compat_str
|
|
from ..utils import (
|
|
cli_configuration_args,
|
|
encodeFilename,
|
|
PostProcessingError,
|
|
)
|
|
|
|
|
|
class PostProcessor(object):
|
|
"""Post Processor class.
|
|
|
|
PostProcessor objects can be added to downloaders with their
|
|
add_post_processor() method. When the downloader has finished a
|
|
successful download, it will take its internal chain of PostProcessors
|
|
and start calling the run() method on each one of them, first with
|
|
an initial argument and then with the returned value of the previous
|
|
PostProcessor.
|
|
|
|
The chain will be stopped if one of them ever returns None or the end
|
|
of the chain is reached.
|
|
|
|
PostProcessor objects follow a "mutual registration" process similar
|
|
to InfoExtractor objects.
|
|
|
|
Optionally PostProcessor can use a list of additional command-line arguments
|
|
with self._configuration_args.
|
|
"""
|
|
|
|
_downloader = None
|
|
|
|
def __init__(self, downloader=None):
|
|
self._downloader = downloader
|
|
self.PP_NAME = self.pp_key()
|
|
|
|
@classmethod
|
|
def pp_key(cls):
|
|
name = cls.__name__[:-2]
|
|
return compat_str(name[6:]) if name[:6].lower() == 'ffmpeg' else name
|
|
|
|
def to_screen(self, text, prefix=True, *args, **kwargs):
|
|
tag = '[%s] ' % self.PP_NAME if prefix else ''
|
|
if self._downloader:
|
|
return self._downloader.to_screen('%s%s' % (tag, text), *args, **kwargs)
|
|
|
|
def report_warning(self, text, *args, **kwargs):
|
|
if self._downloader:
|
|
return self._downloader.report_warning(text, *args, **kwargs)
|
|
|
|
def report_error(self, text, *args, **kwargs):
|
|
if self._downloader:
|
|
return self._downloader.report_error(text, *args, **kwargs)
|
|
|
|
def write_debug(self, text, *args, **kwargs):
|
|
if self._downloader:
|
|
return self._downloader.write_debug(text, *args, **kwargs)
|
|
|
|
def get_param(self, name, default=None, *args, **kwargs):
|
|
if self._downloader:
|
|
return self._downloader.params.get(name, default, *args, **kwargs)
|
|
return default
|
|
|
|
def set_downloader(self, downloader):
|
|
"""Sets the downloader for this PP."""
|
|
self._downloader = downloader
|
|
|
|
@staticmethod
|
|
def _restrict_to(*, video=True, audio=True, images=True):
|
|
allowed = {'video': video, 'audio': audio, 'images': images}
|
|
|
|
def decorator(func):
|
|
@functools.wraps(func)
|
|
def wrapper(self, info):
|
|
format_type = (
|
|
'video' if info.get('vcodec') != 'none'
|
|
else 'audio' if info.get('acodec') != 'none'
|
|
else 'images')
|
|
if allowed[format_type]:
|
|
return func(self, info)
|
|
else:
|
|
self.to_screen('Skipping %s' % format_type)
|
|
return [], info
|
|
return wrapper
|
|
return decorator
|
|
|
|
def run(self, information):
|
|
"""Run the PostProcessor.
|
|
|
|
The "information" argument is a dictionary like the ones
|
|
composed by InfoExtractors. The only difference is that this
|
|
one has an extra field called "filepath" that points to the
|
|
downloaded file.
|
|
|
|
This method returns a tuple, the first element is a list of the files
|
|
that can be deleted, and the second of which is the updated
|
|
information.
|
|
|
|
In addition, this method may raise a PostProcessingError
|
|
exception if post processing fails.
|
|
"""
|
|
return [], information # by default, keep file and do nothing
|
|
|
|
def try_utime(self, path, atime, mtime, errnote='Cannot update utime of file'):
|
|
try:
|
|
os.utime(encodeFilename(path), (atime, mtime))
|
|
except Exception:
|
|
self.report_warning(errnote)
|
|
|
|
def _configuration_args(self, exe, keys=None, default=[], use_compat=True):
|
|
pp_key = self.pp_key().lower()
|
|
exe = exe.lower()
|
|
root_key = exe if pp_key == exe else '%s+%s' % (pp_key, exe)
|
|
keys = ['%s%s' % (root_key, k) for k in (keys or [''])]
|
|
if root_key in keys:
|
|
keys += [root_key] + ([] if pp_key == exe else [(self.pp_key(), exe)]) + ['default']
|
|
else:
|
|
use_compat = False
|
|
return cli_configuration_args(
|
|
self.get_param('postprocessor_args'),
|
|
keys, default, use_compat)
|
|
|
|
|
|
class AudioConversionError(PostProcessingError):
|
|
pass
|