mirror of
https://github.com/mofeng-git/One-KVM.git
synced 2025-12-12 09:10:30 +08:00
improved kvmd-edidconf
This commit is contained in:
Maxim Devaev
parent
e5d5d7938b
commit
9ed0c9add9
@ -21,27 +21,53 @@
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import sys
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import os
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import re
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import contextlib
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import argparse
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from typing import List
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from typing import IO
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from typing import Generator
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from typing import Optional
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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 .. import init
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# from .. import init
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# =====
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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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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 open(path) as file:
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self.__load_from_hex(file.read())
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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[128], self.__data[129]) == (0x02, 0x03), "Can't find CEA-861"
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def write(self, path: str) -> None:
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# =====
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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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@ -49,12 +75,17 @@ class _Edid:
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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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)
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if path:
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with open(path, "w") as file:
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file.write(text + "\n")
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else:
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print(text)
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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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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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@ -109,17 +140,21 @@ class _Edid:
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# =====
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def get_monitor_name(self) -> str:
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index = self.__find_dtd_value(0xFC)
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assert index > 0, "Can't find DTD Monitor name"
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index = self.__find_mnd_text()
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return bytes(self.__data[index:index + 13]).decode("cp437").strip()
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def set_monitor_name(self, name: str) -> None:
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index = self.__find_dtd_value(0xFC)
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assert index > 0, "Can't find DTD Monitor name"
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index = self.__find_mnd_text()
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encoded = (name[:13] + "\n" + " " * 12)[:13].encode("cp437")
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for (offset, byte) in enumerate(encoded):
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self.__data[index + offset] = byte
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def __find_mnd_text(self) -> int:
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for index in [54, 72, 90, 108]:
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if self.__data[index + 3] == 0xFC:
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return index + 5
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raise AssertionError("Can't find DTD Monitor name")
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# =====
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def get_audio(self) -> bool:
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@ -131,44 +166,28 @@ class _Edid:
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else:
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self.__data[131] &= (0xFF - 0b01000000) # ~X
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# =====
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def __find_dtd_value(self, dtype: int) -> int:
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for index in [54, 72, 90, 108]:
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if self.__data[index + 3] == dtype:
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return index + 5
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return -1
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def __load_from_hex(self, text: str) -> None:
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text = re.sub(r"\s", "", text)
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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[128], self.__data[129]) == (0x02, 0x03), "Can't find CEA-861"
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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 main(argv: Optional[List[str]]=None) -> None:
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(parent_parser, argv, _) = init(
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add_help=False,
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argv=argv,
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)
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# (parent_parser, argv, _) = init(
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# add_help=False,
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# argv=argv,
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# )
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if argv is None:
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argv = sys.argv
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parser = argparse.ArgumentParser(
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prog="kvmd-edidconf",
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description="A simple and primitive KVMD EDID editor",
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parents=[parent_parser],
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# parents=[parent_parser],
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)
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parser.add_argument("-f", "--edid-file", dest="path", default="/etc/kvmd/tc358743-edid.hex",
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help="EDID hex text file path", metavar="<file>")
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parser.add_argument("--stdout", action="store_true",
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help="Write to stdout instead of the rewriting the source file")
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help="The hex/bin EDID file path", metavar="<file>")
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parser.add_argument("--export-hex", default=None,
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help="Export [--edid-file] to the new file as a hex text", metavar="<file>")
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parser.add_argument("--export-bin", default=None,
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help="Export [--edid-file] to the new file as a bin data", metavar="<file>")
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parser.add_argument("--import", default=None, dest="imp",
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help="Import specified bin/hex EDID to the [--edid-file] as a hex text", metavar="<file>")
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parser.add_argument("--set-audio", type=valid_bool, default=None,
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help="Enable or disable basic audio", metavar="<yes|no>")
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parser.add_argument("--set-mfc-id", default=None,
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@ -179,10 +198,12 @@ def main(argv: Optional[List[str]]=None) -> None:
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help="Set serial number (decimal)", metavar="<uint>")
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parser.add_argument("--set-monitor-name", default=None,
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help="Set monitor name in DTD/MND (ASCII, max 13 characters)", metavar="<str>")
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parser.add_argument("--show-info", action="store_true",
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help="Write summary info to stderr")
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options = parser.parse_args(argv[1:])
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if options.imp:
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options.export_hex = options.path
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options.path = options.imp
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edid = _Edid(options.path)
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changed = False
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@ -193,12 +214,18 @@ def main(argv: Optional[List[str]]=None) -> None:
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getattr(edid, cmd)(value)
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changed = True
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if changed:
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edid.write("" if options.stdout else options.path)
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if options.export_hex is not None:
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edid.write_hex(options.export_hex)
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elif options.export_bin is not None:
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edid.write_bin(options.export_bin)
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elif changed:
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edid.write_hex(options.path)
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if options.show_info:
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print("Manufacturer ID:", edid.get_mfc_id())
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print("Product ID: ", edid.get_product_id())
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print("Serial number: ", edid.get_serial())
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print("Monitor name: ", edid.get_monitor_name())
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print("Basic audio: ", ("yes" if edid.get_audio() else "no"), file=sys.stderr)
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for (key, value) in [
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("Manufacturer ID:", edid.get_mfc_id()),
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("Product ID: ", edid.get_product_id()),
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("Serial number: ", edid.get_serial()),
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("Monitor name: ", edid.get_monitor_name()),
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("Basic audio: ", ("yes" if edid.get_audio() else "no")),
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]:
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print(key, value, file=sys.stderr)
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