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# ========================================================================== #
# #
# KVMD - The main PiKVM daemon. #
# #
# Copyright (C) 2020 Maxim Devaev <[email protected]> #
# #
# This program is free software: you can redistribute it and/or modify #
# it under the terms of the GNU General Public License as published by #
# the Free Software Foundation, either version 3 of the License, or #
# (at your option) any later version. #
# #
# This program is distributed in the hope that it will be useful, #
# but WITHOUT ANY WARRANTY; without even the implied warranty of #
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the #
# GNU General Public License for more details. #
# #
# You should have received a copy of the GNU General Public License #
# along with this program. If not, see <https://www.gnu.org/licenses/>. #
# #
# ========================================================================== #
import dataclasses
from typing import FrozenSet
from typing import Any
# =====
class RfbEncodings:
RESIZE = -223 # DesktopSize Pseudo-encoding
RENAME = -307 # DesktopName Pseudo-encoding
LEDS_STATE = -261 # QEMU LED State Pseudo-encoding
EXT_KEYS = -258 # QEMU Extended Key Events Pseudo-encoding
TIGHT = 7
TIGHT_JPEG_QUALITIES = dict(zip( # JPEG Quality Level Pseudo-encoding
[-32, -31, -30, -29, -28, -27, -26, -25, -24, -23],
[10, 20, 30, 40, 50, 60, 70, 80, 90, 100],
))
H264 = 50 # Open H.264 Encoding
@dataclasses.dataclass(frozen=True)
class RfbClientEncodings: # pylint: disable=too-many-instance-attributes
encodings: FrozenSet[int]
has_resize: bool = dataclasses.field(default=False)
has_rename: bool = dataclasses.field(default=False)
has_leds_state: bool = dataclasses.field(default=False)
has_ext_keys: bool = dataclasses.field(default=False)
has_tight: bool = dataclasses.field(default=False)
tight_jpeg_quality: int = dataclasses.field(default=0)
has_h264: bool = dataclasses.field(default=False)
def __post_init__(self) -> None:
self.__set("has_resize", (RfbEncodings.RESIZE in self.encodings))
self.__set("has_rename", (RfbEncodings.RENAME in self.encodings))
self.__set("has_leds_state", (RfbEncodings.LEDS_STATE in self.encodings))
self.__set("has_ext_keys", (RfbEncodings.EXT_KEYS in self.encodings))
self.__set("has_tight", (RfbEncodings.TIGHT in self.encodings))
self.__set("tight_jpeg_quality", self.__get_tight_jpeg_quality())
self.__set("has_h264", (RfbEncodings.H264 in self.encodings))
def __set(self, key: str, value: Any) -> None:
object.__setattr__(self, key, value)
def __get_tight_jpeg_quality(self) -> int:
if RfbEncodings.TIGHT in self.encodings:
qualities = self.encodings.intersection(RfbEncodings.TIGHT_JPEG_QUALITIES)
if qualities:
return RfbEncodings.TIGHT_JPEG_QUALITIES[max(qualities)]
return 0
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