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.github
discord
app_commands
bin
ext
types
ui
webhook
__init__.py
__main__.py
abc.py
activity.py
appinfo.py
asset.py
audit_logs.py
backoff.py
channel.py
client.py
colour.py
components.py
context_managers.py
embeds.py
emoji.py
enums.py
errors.py
file.py
flags.py
gateway.py
guild.py
http.py
integrations.py
interactions.py
invite.py
member.py
mentions.py
message.py
mixins.py
object.py
oggparse.py
opus.py
partial_emoji.py
permissions.py
player.py
py.typed
raw_models.py
reaction.py
role.py
scheduled_event.py
shard.py
stage_instance.py
state.py
sticker.py
team.py
template.py
threads.py
user.py
utils.py
voice_client.py
welcome_screen.py
widget.py
docs
examples
tests
.gitignore
.readthedocs.yml
LICENSE
MANIFEST.in
README.ja.rst
README.rst
pyproject.toml
requirements.txt
setup.py
88b520b5ab
Segments where readability was hampered were fixed by appropriate format skipping directives. New code should hopefully be black compatible. The moment they remove the -S option is probably the moment I stop using black though.
118 lines
3.6 KiB
Python
118 lines
3.6 KiB
Python
"""
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The MIT License (MIT)
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Copyright (c) 2015-present Rapptz
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Permission is hereby granted, free of charge, to any person obtaining a
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copy of this software and associated documentation files (the "Software"),
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to deal in the Software without restriction, including without limitation
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the rights to use, copy, modify, merge, publish, distribute, sublicense,
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and/or sell copies of the Software, and to permit persons to whom the
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Software is furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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DEALINGS IN THE SOFTWARE.
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"""
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from __future__ import annotations
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import struct
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from typing import TYPE_CHECKING, ClassVar, IO, Generator, Tuple, Optional
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from .errors import DiscordException
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__all__ = (
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'OggError',
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'OggPage',
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'OggStream',
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)
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class OggError(DiscordException):
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"""An exception that is thrown for Ogg stream parsing errors."""
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pass
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# https://tools.ietf.org/html/rfc3533
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# https://tools.ietf.org/html/rfc7845
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class OggPage:
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_header: ClassVar[struct.Struct] = struct.Struct('<xBQIIIB')
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if TYPE_CHECKING:
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flag: int
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gran_pos: int
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serial: int
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pagenum: int
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crc: int
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segnum: int
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def __init__(self, stream: IO[bytes]) -> None:
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try:
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header = stream.read(struct.calcsize(self._header.format))
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self.flag, self.gran_pos, self.serial, self.pagenum, self.crc, self.segnum = self._header.unpack(header)
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self.segtable: bytes = stream.read(self.segnum)
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bodylen = sum(struct.unpack('B' * self.segnum, self.segtable))
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self.data: bytes = stream.read(bodylen)
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except Exception:
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raise OggError('bad data stream') from None
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def iter_packets(self) -> Generator[Tuple[bytes, bool], None, None]:
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packetlen = offset = 0
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partial = True
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for seg in self.segtable:
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if seg == 255:
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packetlen += 255
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partial = True
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else:
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packetlen += seg
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yield self.data[offset : offset + packetlen], True
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offset += packetlen
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packetlen = 0
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partial = False
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if partial:
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yield self.data[offset:], False
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class OggStream:
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def __init__(self, stream: IO[bytes]) -> None:
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self.stream: IO[bytes] = stream
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def _next_page(self) -> Optional[OggPage]:
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head = self.stream.read(4)
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if head == b'OggS':
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return OggPage(self.stream)
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elif not head:
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return None
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else:
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raise OggError('invalid header magic')
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def _iter_pages(self) -> Generator[OggPage, None, None]:
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page = self._next_page()
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while page:
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yield page
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page = self._next_page()
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def iter_packets(self) -> Generator[bytes, None, None]:
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partial = b''
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for page in self._iter_pages():
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for data, complete in page.iter_packets():
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partial += data
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if complete:
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yield partial
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partial = b''
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