mirror of
https://github.com/mofeng-git/One-KVM.git
synced 2025-12-12 01:00:29 +08:00
refactoring
This commit is contained in:
Maxim Devaev
parent
7a53f14456
commit
842ddc91a1
@ -22,259 +22,22 @@
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import sys
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import os
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import re
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import dataclasses
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import contextlib
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import subprocess
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import argparse
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import time
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from typing import IO
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from typing import Generator
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from typing import Callable
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from ...validators.basic import valid_bool
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from ...validators.basic import valid_int_f0
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from ...edid import EdidNoBlockError
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from ...edid import Edid
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# from .. import init
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# =====
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class NoBlockError(Exception):
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pass
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@contextlib.contextmanager
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def _smart_open(path: str, mode: str) -> Generator[IO, None, None]:
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fd = (0 if "r" in mode else 1)
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with (os.fdopen(fd, mode, closefd=False) if path == "-" else open(path, mode)) as file:
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yield file
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if "w" in mode:
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file.flush()
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@dataclasses.dataclass(frozen=True)
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class _CeaBlock:
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tag: int
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data: bytes
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def __post_init__(self) -> None:
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assert 0 < self.tag <= 0b111
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assert 0 < len(self.data) <= 0b11111
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@property
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def size(self) -> int:
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return len(self.data) + 1
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def pack(self) -> bytes:
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header = (self.tag << 5) | len(self.data)
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return header.to_bytes() + self.data
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@classmethod
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def first_from_raw(cls, raw: (bytes | list[int])) -> "_CeaBlock":
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assert 0 < raw[0] <= 0xFF
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tag = (raw[0] & 0b11100000) >> 5
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data_size = (raw[0] & 0b00011111)
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data = bytes(raw[1:data_size + 1])
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return _CeaBlock(tag, data)
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_CEA = 128
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_CEA_AUDIO = 1
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_CEA_SPEAKERS = 4
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class _Edid:
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# https://en.wikipedia.org/wiki/Extended_Display_Identification_Data
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def __init__(self, path: str) -> None:
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with _smart_open(path, "rb") as file:
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data = file.read()
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if data.startswith(b"\x00\xFF\xFF\xFF\xFF\xFF\xFF\x00"):
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self.__data = list(data)
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else:
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text = re.sub(r"\s", "", data.decode())
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self.__data = [
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int(text[index:index + 2], 16)
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for index in range(0, len(text), 2)
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]
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assert len(self.__data) == 256, f"Invalid EDID length: {len(self.__data)}, should be 256 bytes"
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assert self.__data[126] == 1, "Zero extensions number"
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assert (self.__data[_CEA + 0], self.__data[_CEA + 1]) == (0x02, 0x03), "Can't find CEA extension"
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def write_hex(self, path: str) -> None:
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self.__update_checksums()
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text = "\n".join(
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"".join(
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f"{item:0{2}X}"
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for item in self.__data[index:index + 16]
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)
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for index in range(0, len(self.__data), 16)
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) + "\n"
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with _smart_open(path, "w") as file:
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file.write(text)
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def write_bin(self, path: str) -> None:
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self.__update_checksums()
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with _smart_open(path, "wb") as file:
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file.write(bytes(self.__data))
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def __update_checksums(self) -> None:
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self.__data[127] = 256 - (sum(self.__data[:127]) % 256)
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self.__data[255] = 256 - (sum(self.__data[128:255]) % 256)
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# =====
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def get_mfc_id(self) -> str:
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raw = self.__data[8] << 8 | self.__data[9]
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return bytes([
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((raw >> 10) & 0b11111) + 0x40,
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((raw >> 5) & 0b11111) + 0x40,
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(raw & 0b11111) + 0x40,
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]).decode("ascii")
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def set_mfc_id(self, mfc_id: str) -> None:
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assert len(mfc_id) == 3, "Mfc ID must be 3 characters long"
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data = mfc_id.upper().encode("ascii")
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for ch in data:
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assert 0x41 <= ch <= 0x5A, "Mfc ID must contain only A-Z characters"
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raw = (
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(data[2] - 0x40)
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| ((data[1] - 0x40) << 5)
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| ((data[0] - 0x40) << 10)
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)
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self.__data[8] = (raw >> 8) & 0xFF
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self.__data[9] = raw & 0xFF
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# =====
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def get_product_id(self) -> int:
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return (self.__data[10] | self.__data[11] << 8)
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def set_product_id(self, product_id: int) -> None:
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assert 0 <= product_id <= 0xFFFF, f"Product ID should be from 0 to {0xFFFF}"
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self.__data[10] = product_id & 0xFF
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self.__data[11] = (product_id >> 8) & 0xFF
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# =====
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def get_serial(self) -> int:
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return (
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self.__data[12]
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| self.__data[13] << 8
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| self.__data[14] << 16
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| self.__data[15] << 24
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)
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def set_serial(self, serial: int) -> None:
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assert 0 <= serial <= 0xFFFFFFFF, f"Serial should be from 0 to {0xFFFFFFFF}"
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self.__data[12] = serial & 0xFF
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self.__data[13] = (serial >> 8) & 0xFF
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self.__data[14] = (serial >> 16) & 0xFF
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self.__data[15] = (serial >> 24) & 0xFF
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# =====
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def get_monitor_name(self) -> str:
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return self.__get_dtd_text(0xFC, "Monitor Name")
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def set_monitor_name(self, text: str) -> None:
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self.__set_dtd_text(0xFC, "Monitor Name", text)
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def get_monitor_serial(self) -> str:
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return self.__get_dtd_text(0xFF, "Monitor Serial")
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def set_monitor_serial(self, text: str) -> None:
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self.__set_dtd_text(0xFF, "Monitor Serial", text)
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def __get_dtd_text(self, d_type: int, name: str) -> str:
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index = self.__find_dtd_text(d_type, name)
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return bytes(self.__data[index:index + 13]).decode("cp437").strip()
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def __set_dtd_text(self, d_type: int, name: str, text: str) -> None:
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index = self.__find_dtd_text(d_type, name)
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encoded = (text[:13] + "\n" + " " * 12)[:13].encode("cp437")
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for (offset, ch) in enumerate(encoded):
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self.__data[index + offset] = ch
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def __find_dtd_text(self, d_type: int, name: str) -> int:
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for index in [54, 72, 90, 108]:
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if self.__data[index + 3] == d_type:
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return index + 5
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raise NoBlockError(f"Can't find DTD {name}")
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# ===== CEA =====
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def get_audio(self) -> bool:
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(cbs, _) = self.__parse_cea()
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audio = False
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speakers = False
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for cb in cbs:
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if cb.tag == _CEA_AUDIO:
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audio = True
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elif cb.tag == _CEA_SPEAKERS:
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speakers = True
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return (audio and speakers and self.__get_basic_audio())
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def set_audio(self, enabled: bool) -> None:
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(cbs, dtds) = self.__parse_cea()
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cbs = [cb for cb in cbs if cb.tag not in [_CEA_AUDIO, _CEA_SPEAKERS]]
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if enabled:
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cbs.append(_CeaBlock(_CEA_AUDIO, b"\x09\x7f\x07"))
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cbs.append(_CeaBlock(_CEA_SPEAKERS, b"\x01\x00\x00"))
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self.__replace_cea(cbs, dtds)
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self.__set_basic_audio(enabled)
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def __get_basic_audio(self) -> bool:
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return bool(self.__data[_CEA + 3] & 0b01000000)
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def __set_basic_audio(self, enabled: bool) -> None:
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if enabled:
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self.__data[_CEA + 3] |= 0b01000000
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else:
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self.__data[_CEA + 3] &= (0xFF - 0b01000000) # ~X
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def __parse_cea(self) -> tuple[list[_CeaBlock], bytes]:
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cea = self.__data[_CEA:]
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dtd_begin = cea[2]
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if dtd_begin == 0:
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return ([], b"")
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cbs: list[_CeaBlock] = []
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if dtd_begin > 4:
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raw = cea[4:dtd_begin]
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while len(raw) != 0:
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cb = _CeaBlock.first_from_raw(raw)
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cbs.append(cb)
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raw = raw[cb.size:]
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dtds = b""
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assert dtd_begin >= 4
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raw = cea[dtd_begin:]
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while len(raw) > (18 + 1) and raw[0] != 0:
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dtds += bytes(raw[:18])
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raw = raw[18:]
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return (cbs, dtds)
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def __replace_cea(self, cbs: list[_CeaBlock], dtds: bytes) -> None:
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cbs_packed = b""
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for cb in cbs:
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cbs_packed += cb.pack()
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raw = cbs_packed + dtds
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assert len(raw) <= (128 - 4 - 1), "Too many CEA blocks or DTDs"
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self.__data[_CEA + 2] = (0 if len(raw) == 0 else (len(cbs_packed) + 4))
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for index in range(4, 127):
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try:
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ch = raw[index - 4]
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except IndexError:
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ch = 0
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self.__data[_CEA + index] = ch
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def _format_bool(value: bool) -> str:
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return ("yes" if value else "no")
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@ -283,7 +46,7 @@ def _make_format_hex(size: int) -> Callable[[int], str]:
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return (lambda value: ("0x{:0%dX} ({})" % (size * 2)).format(value, value))
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def _print_edid(edid: _Edid) -> None:
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def _print_edid(edid: Edid) -> None:
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for (key, get, fmt) in [
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("Manufacturer ID:", edid.get_mfc_id, str),
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("Product ID: ", edid.get_product_id, _make_format_hex(2)),
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@ -294,7 +57,7 @@ def _print_edid(edid: _Edid) -> None:
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]:
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try:
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print(key, fmt(get()), file=sys.stderr) # type: ignore
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except NoBlockError:
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except EdidNoBlockError:
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pass
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@ -348,12 +111,12 @@ def main(argv: (list[str] | None)=None) -> None: # pylint: disable=too-many-bra
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help="Presets directory", metavar="<dir>")
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options = parser.parse_args(argv[1:])
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base: (_Edid | None) = None
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base: (Edid | None) = None
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if options.import_preset:
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imp = options.import_preset
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if "." in imp:
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(base_name, imp) = imp.split(".", 1) # v3.1080p-by-default
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base = _Edid(os.path.join(options.presets_path, f"{base_name}.hex"))
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base = Edid.from_file(os.path.join(options.presets_path, f"{base_name}.hex"))
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imp = f"_{imp}"
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options.imp = os.path.join(options.presets_path, f"{imp}.hex")
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@ -362,16 +125,16 @@ def main(argv: (list[str] | None)=None) -> None: # pylint: disable=too-many-bra
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options.export_hex = options.edid_path
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options.edid_path = options.imp
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edid = _Edid(options.edid_path)
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edid = Edid.from_file(options.edid_path)
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changed = False
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for cmd in dir(_Edid):
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for cmd in dir(Edid):
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if cmd.startswith("set_"):
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value = getattr(options, cmd)
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if value is None and base is not None:
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try:
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value = getattr(base, cmd.replace("set_", "get_"))()
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except NoBlockError:
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except EdidNoBlockError:
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pass
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if value is not None:
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getattr(edid, cmd)(value)
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269
kvmd/edid.py
Normal file
269
kvmd/edid.py
Normal file
@ -0,0 +1,269 @@
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# ========================================================================== #
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# #
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# KVMD - The main PiKVM daemon. #
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# #
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# Copyright (C) 2018-2024 Maxim Devaev <mdevaev@gmail.com> #
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# #
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# This program is free software: you can redistribute it and/or modify #
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# it under the terms of the GNU General Public License as published by #
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# the Free Software Foundation, either version 3 of the License, or #
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# (at your option) any later version. #
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# #
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# This program is distributed in the hope that it will be useful, #
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# but WITHOUT ANY WARRANTY; without even the implied warranty of #
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the #
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# GNU General Public License for more details. #
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# #
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# You should have received a copy of the GNU General Public License #
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# along with this program. If not, see <https://www.gnu.org/licenses/>. #
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# #
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# ========================================================================== #
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import os
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import re
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import dataclasses
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import contextlib
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from typing import IO
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from typing import Generator
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# =====
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class EdidNoBlockError(Exception):
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pass
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@contextlib.contextmanager
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def _smart_open(path: str, mode: str) -> Generator[IO, None, None]:
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fd = (0 if "r" in mode else 1)
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with (os.fdopen(fd, mode, closefd=False) if path == "-" else open(path, mode)) as file:
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yield file
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if "w" in mode:
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file.flush()
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@dataclasses.dataclass(frozen=True)
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class _CeaBlock:
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tag: int
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data: bytes
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def __post_init__(self) -> None:
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assert 0 < self.tag <= 0b111
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assert 0 < len(self.data) <= 0b11111
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@property
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def size(self) -> int:
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return len(self.data) + 1
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def pack(self) -> bytes:
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header = (self.tag << 5) | len(self.data)
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return header.to_bytes() + self.data
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@classmethod
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def first_from_raw(cls, raw: (bytes | list[int])) -> "_CeaBlock":
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assert 0 < raw[0] <= 0xFF
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tag = (raw[0] & 0b11100000) >> 5
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data_size = (raw[0] & 0b00011111)
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data = bytes(raw[1:data_size + 1])
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return _CeaBlock(tag, data)
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_CEA = 128
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_CEA_AUDIO = 1
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_CEA_SPEAKERS = 4
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class Edid:
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# https://en.wikipedia.org/wiki/Extended_Display_Identification_Data
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def __init__(self, data: bytes) -> None:
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assert len(data) == 256
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self.__data = list(data)
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@classmethod
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def from_file(cls, path: str) -> "Edid":
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with _smart_open(path, "rb") as file:
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data = file.read()
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if not data.startswith(b"\x00\xFF\xFF\xFF\xFF\xFF\xFF\x00"):
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text = re.sub(r"\s", "", data.decode())
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data = bytes([
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int(text[index:index + 2], 16)
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for index in range(0, len(text), 2)
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])
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assert len(data) == 256, f"Invalid EDID length: {len(data)}, should be 256 bytes"
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assert data[126] == 1, "Zero extensions number"
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assert (data[_CEA + 0], [_CEA + 1]) == (0x02, 0x03), "Can't find CEA extension"
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return Edid(data)
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def write_hex(self, path: str) -> None:
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self.__update_checksums()
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text = "\n".join(
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"".join(
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f"{item:0{2}X}"
|
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for item in self.__data[index:index + 16]
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)
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for index in range(0, len(self.__data), 16)
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) + "\n"
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with _smart_open(path, "w") as file:
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file.write(text)
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def write_bin(self, path: str) -> None:
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self.__update_checksums()
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with _smart_open(path, "wb") as file:
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file.write(bytes(self.__data))
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def __update_checksums(self) -> None:
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self.__data[127] = 256 - (sum(self.__data[:127]) % 256)
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self.__data[255] = 256 - (sum(self.__data[128:255]) % 256)
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# =====
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def get_mfc_id(self) -> str:
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raw = self.__data[8] << 8 | self.__data[9]
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return bytes([
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((raw >> 10) & 0b11111) + 0x40,
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((raw >> 5) & 0b11111) + 0x40,
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(raw & 0b11111) + 0x40,
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]).decode("ascii")
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def set_mfc_id(self, mfc_id: str) -> None:
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assert len(mfc_id) == 3, "Mfc ID must be 3 characters long"
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data = mfc_id.upper().encode("ascii")
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for ch in data:
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assert 0x41 <= ch <= 0x5A, "Mfc ID must contain only A-Z characters"
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raw = (
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(data[2] - 0x40)
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| ((data[1] - 0x40) << 5)
|
||||
| ((data[0] - 0x40) << 10)
|
||||
)
|
||||
self.__data[8] = (raw >> 8) & 0xFF
|
||||
self.__data[9] = raw & 0xFF
|
||||
|
||||
# =====
|
||||
|
||||
def get_product_id(self) -> int:
|
||||
return (self.__data[10] | self.__data[11] << 8)
|
||||
|
||||
def set_product_id(self, product_id: int) -> None:
|
||||
assert 0 <= product_id <= 0xFFFF, f"Product ID should be from 0 to {0xFFFF}"
|
||||
self.__data[10] = product_id & 0xFF
|
||||
self.__data[11] = (product_id >> 8) & 0xFF
|
||||
|
||||
# =====
|
||||
|
||||
def get_serial(self) -> int:
|
||||
return (
|
||||
self.__data[12]
|
||||
| self.__data[13] << 8
|
||||
| self.__data[14] << 16
|
||||
| self.__data[15] << 24
|
||||
)
|
||||
|
||||
def set_serial(self, serial: int) -> None:
|
||||
assert 0 <= serial <= 0xFFFFFFFF, f"Serial should be from 0 to {0xFFFFFFFF}"
|
||||
self.__data[12] = serial & 0xFF
|
||||
self.__data[13] = (serial >> 8) & 0xFF
|
||||
self.__data[14] = (serial >> 16) & 0xFF
|
||||
self.__data[15] = (serial >> 24) & 0xFF
|
||||
|
||||
# =====
|
||||
|
||||
def get_monitor_name(self) -> str:
|
||||
return self.__get_dtd_text(0xFC, "Monitor Name")
|
||||
|
||||
def set_monitor_name(self, text: str) -> None:
|
||||
self.__set_dtd_text(0xFC, "Monitor Name", text)
|
||||
|
||||
def get_monitor_serial(self) -> str:
|
||||
return self.__get_dtd_text(0xFF, "Monitor Serial")
|
||||
|
||||
def set_monitor_serial(self, text: str) -> None:
|
||||
self.__set_dtd_text(0xFF, "Monitor Serial", text)
|
||||
|
||||
def __get_dtd_text(self, d_type: int, name: str) -> str:
|
||||
index = self.__find_dtd_text(d_type, name)
|
||||
return bytes(self.__data[index:index + 13]).decode("cp437").strip()
|
||||
|
||||
def __set_dtd_text(self, d_type: int, name: str, text: str) -> None:
|
||||
index = self.__find_dtd_text(d_type, name)
|
||||
encoded = (text[:13] + "\n" + " " * 12)[:13].encode("cp437")
|
||||
for (offset, ch) in enumerate(encoded):
|
||||
self.__data[index + offset] = ch
|
||||
|
||||
def __find_dtd_text(self, d_type: int, name: str) -> int:
|
||||
for index in [54, 72, 90, 108]:
|
||||
if self.__data[index + 3] == d_type:
|
||||
return index + 5
|
||||
raise EdidNoBlockError(f"Can't find DTD {name}")
|
||||
|
||||
# ===== CEA =====
|
||||
|
||||
def get_audio(self) -> bool:
|
||||
(cbs, _) = self.__parse_cea()
|
||||
audio = False
|
||||
speakers = False
|
||||
for cb in cbs:
|
||||
if cb.tag == _CEA_AUDIO:
|
||||
audio = True
|
||||
elif cb.tag == _CEA_SPEAKERS:
|
||||
speakers = True
|
||||
return (audio and speakers and self.__get_basic_audio())
|
||||
|
||||
def set_audio(self, enabled: bool) -> None:
|
||||
(cbs, dtds) = self.__parse_cea()
|
||||
cbs = [cb for cb in cbs if cb.tag not in [_CEA_AUDIO, _CEA_SPEAKERS]]
|
||||
if enabled:
|
||||
cbs.append(_CeaBlock(_CEA_AUDIO, b"\x09\x7f\x07"))
|
||||
cbs.append(_CeaBlock(_CEA_SPEAKERS, b"\x01\x00\x00"))
|
||||
self.__replace_cea(cbs, dtds)
|
||||
self.__set_basic_audio(enabled)
|
||||
|
||||
def __get_basic_audio(self) -> bool:
|
||||
return bool(self.__data[_CEA + 3] & 0b01000000)
|
||||
|
||||
def __set_basic_audio(self, enabled: bool) -> None:
|
||||
if enabled:
|
||||
self.__data[_CEA + 3] |= 0b01000000
|
||||
else:
|
||||
self.__data[_CEA + 3] &= (0xFF - 0b01000000) # ~X
|
||||
|
||||
def __parse_cea(self) -> tuple[list[_CeaBlock], bytes]:
|
||||
cea = self.__data[_CEA:]
|
||||
dtd_begin = cea[2]
|
||||
if dtd_begin == 0:
|
||||
return ([], b"")
|
||||
|
||||
cbs: list[_CeaBlock] = []
|
||||
if dtd_begin > 4:
|
||||
raw = cea[4:dtd_begin]
|
||||
while len(raw) != 0:
|
||||
cb = _CeaBlock.first_from_raw(raw)
|
||||
cbs.append(cb)
|
||||
raw = raw[cb.size:]
|
||||
|
||||
dtds = b""
|
||||
assert dtd_begin >= 4
|
||||
raw = cea[dtd_begin:]
|
||||
while len(raw) > (18 + 1) and raw[0] != 0:
|
||||
dtds += bytes(raw[:18])
|
||||
raw = raw[18:]
|
||||
|
||||
return (cbs, dtds)
|
||||
|
||||
def __replace_cea(self, cbs: list[_CeaBlock], dtds: bytes) -> None:
|
||||
cbs_packed = b""
|
||||
for cb in cbs:
|
||||
cbs_packed += cb.pack()
|
||||
|
||||
raw = cbs_packed + dtds
|
||||
assert len(raw) <= (128 - 4 - 1), "Too many CEA blocks or DTDs"
|
||||
|
||||
self.__data[_CEA + 2] = (0 if len(raw) == 0 else (len(cbs_packed) + 4))
|
||||
|
||||
for index in range(4, 127):
|
||||
try:
|
||||
ch = raw[index - 4]
|
||||
except IndexError:
|
||||
ch = 0
|
||||
self.__data[_CEA + index] = ch
|
||||
Loading…
x
Reference in New Issue
Block a user