1033 lines
33 KiB
Python
1033 lines
33 KiB
Python
# SPDX-License-Identifier: MIT
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from __future__ import annotations # noqa:F407
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import functools
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import struct
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import sys
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import textwrap
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import typing
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import warnings
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from typing import Any, Dict, Iterable, Iterator, List, Optional, Sequence, TextIO, Tuple, Union
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if sys.version_info >= (3, 8):
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from typing import Literal
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else: # pragma: no cover
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from typing_extensions import Literal
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import hid_parser.data
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__version__ = "0.0.3"
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class HIDWarning(Warning):
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pass
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class HIDComplianceWarning(HIDWarning):
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pass
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class HIDReportWarning(HIDWarning):
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pass
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class HIDUnsupportedWarning(HIDWarning):
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pass
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class Type:
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MAIN = 0
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GLOBAL = 1
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LOCAL = 2
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class TagMain:
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INPUT = 0b1000
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OUTPUT = 0b1001
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FEATURE = 0b1011
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COLLECTION = 0b1010
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END_COLLECTION = 0b1100
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class TagGlobal:
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USAGE_PAGE = 0b0000
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LOGICAL_MINIMUM = 0b0001
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LOGICAL_MAXIMUM = 0b0010
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PHYSICAL_MINIMUM = 0b0011
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PHYSICAL_MAXIMUM = 0b0100
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UNIT_EXPONENT = 0b0101
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UNIT = 0b0110
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REPORT_SIZE = 0b0111
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REPORT_ID = 0b1000
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REPORT_COUNT = 0b1001
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PUSH = 0b1010
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POP = 0b1011
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class TagLocal:
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USAGE = 0b0000
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USAGE_MINIMUM = 0b0001
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USAGE_MAXIMUM = 0b0010
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DESIGNATOR_INDEX = 0b0011
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DESIGNATOR_MINIMUM = 0b0100
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DESIGNATOR_MAXIMUM = 0b0101
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STRING_INDEX = 0b0111
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STRING_MINIMUM = 0b1000
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STRING_MAXIMUM = 0b1001
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DELIMITER = 0b1010
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def _data_bit_shift(data: Sequence[int], offset: int, length: int) -> Sequence[int]:
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if not length > 0:
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raise ValueError(f"Invalid specified length: {length}")
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left_extra = offset % 8
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right_extra = 8 - (offset + length) % 8
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start_offset = offset // 8
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end_offset = (offset + length - 1) // 8
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byte_length = (length - 1) // 8 + 1
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if not end_offset < len(data):
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raise ValueError(f"Invalid data length: {len(data)} (expecting {end_offset + 1})")
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shifted = [0] * byte_length
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if right_extra == 8:
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right_extra = 0
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i = end_offset
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shifted_offset = byte_length - 1
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while shifted_offset >= 0:
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shifted[shifted_offset] = data[i] >> right_extra
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if i - start_offset >= 0:
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shifted[shifted_offset] |= (data[i - 1] & (0xFF >> (8 - right_extra))) << (8 - right_extra)
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shifted_offset -= 1
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i -= 1
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shifted[0] &= 0xFF >> ((left_extra + right_extra) % 8)
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if not len(shifted) == byte_length:
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raise ValueError("Invalid data")
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return shifted
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class BitNumber(int):
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def __init__(self, value: int):
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self._value = value
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def __int__(self) -> int:
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return self._value
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def __eq__(self, other: Any) -> bool:
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try:
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return self._value == int(other)
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except: # noqa: E722
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return False
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@property
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def byte(self) -> int:
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"""
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Number of bytes
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"""
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return self._value // 8
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@property
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def bit(self) -> int:
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"""
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Number of unaligned bits
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n.byte * 8 + n.bits = n
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"""
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if self.byte == 0:
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return self._value
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return self._value % (self.byte * 8)
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@staticmethod
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def _param_repr(value: int, unit: str) -> str:
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if value != 1:
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unit += "s"
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return f"{value}{unit}"
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def __repr__(self) -> str:
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byte_str = self._param_repr(self.byte, "byte")
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bit_str = self._param_repr(self.bit, "bit")
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if self.byte == 0 and self.bit == 0:
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return bit_str
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parts = []
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if self.byte != 0:
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parts.append(byte_str)
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if self.bit != 0:
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parts.append(bit_str)
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return " ".join(parts)
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class Usage:
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def __init__(
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self, page: Optional[int] = None, usage: Optional[int] = None, *, extended_usage: Optional[int] = None
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) -> None:
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if extended_usage and page and usage:
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raise ValueError("You need to specify either the usage page and usage or the extended usage")
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if extended_usage is not None:
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self.page = extended_usage >> (2 * 8)
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self.usage = extended_usage & 0xFFFF
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elif page is not None and usage is not None:
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self.page = page
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self.usage = usage
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else:
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raise ValueError("No usage specified")
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def __int__(self) -> int:
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return self.page << (2 * 8) | self.usage
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def __eq__(self, other: Any) -> bool:
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if not isinstance(other, self.__class__):
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return False
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return self.page == other.page and self.usage == other.usage
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def __hash__(self) -> int:
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return self.usage << (2 * 8) + self.page
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def __repr__(self) -> str:
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try:
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page_str = hid_parser.data.UsagePages.get_description(self.page)
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except KeyError:
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page_str = f"0x{self.page:04x}"
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usage_str = f"0x{self.usage:04x}"
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else:
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try:
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page = hid_parser.data.UsagePages.get_subdata(self.page)
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usage_str = page.get_description(self.usage)
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except (KeyError, ValueError):
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usage_str = f"0x{self.usage:04x}"
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return f"Usage(page={page_str}, usage={usage_str})"
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@property
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def usage_types(self) -> Tuple[hid_parser.data.UsageTypes]:
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subdata = hid_parser.data.UsagePages.get_subdata(self.page).get_subdata(self.usage)
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if isinstance(subdata, tuple):
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types = subdata
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else:
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types = (subdata,)
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for typ in types:
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if not isinstance(typ, hid_parser.data.UsageTypes):
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raise ValueError(f"Expecting usage type but got '{type(typ)}'")
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return typing.cast(Tuple[hid_parser.data.UsageTypes], types)
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class UsageValue:
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def __init__(self, item: MainItem, value: int):
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self._item = item
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self._value = value
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def __int__(self) -> int:
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return self.value
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def __repr__(self) -> str:
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return repr(self.value)
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@property
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def value(self) -> Union[int, bool]:
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return self._value
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@property
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def constant(self) -> bool:
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return self._item.constant
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@property
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def data(self) -> bool:
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return self._item.data
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@property
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def relative(self) -> bool:
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return self._item.relative
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@property
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def absolute(self) -> bool:
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return self._item.absolute
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class VendorUsageValue(UsageValue):
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def __init__(
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self,
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item: MainItem,
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*,
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value: Optional[int] = None,
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value_list: Optional[List[int]] = None,
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):
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self._item = item
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if value:
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self._list = [value]
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elif value_list:
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self._list = value_list
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else:
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self._list = []
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def __int__(self) -> int:
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return self.value
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def __iter__(self) -> Iterator[int]:
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return iter(self.list)
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@property
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def value(self) -> Union[int, bool]:
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return int.from_bytes(self._list, byteorder="little")
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@property
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def list(self) -> List[int]:
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return self._list
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class BaseItem:
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def __init__(self, offset: int, size: int):
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self._offset = BitNumber(offset)
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self._size = BitNumber(size)
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@property
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def offset(self) -> BitNumber:
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return self._offset
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@property
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def size(self) -> BitNumber:
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return self._size
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def __repr__(self) -> str:
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return f"{self.__class__.__name__}(offset={self.offset}, size={self.size})"
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class PaddingItem(BaseItem):
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pass
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class MainItem(BaseItem):
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def __init__(
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self,
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offset: int,
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size: int,
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flags: int,
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logical_min: int,
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logical_max: int,
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physical_min: Optional[int] = None,
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physical_max: Optional[int] = None,
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):
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super().__init__(offset, size)
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self._flags = flags
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self._logical_min = logical_min
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self._logical_max = logical_max
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self._physical_min = physical_min
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self._physical_max = physical_max
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# TODO: unit
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@property
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def offset(self) -> BitNumber:
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return self._offset
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@property
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def size(self) -> BitNumber:
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return self._size
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@property
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def logical_min(self) -> int:
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return self._logical_min
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@property
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def logical_max(self) -> int:
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return self._logical_max
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@property
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def physical_min(self) -> Optional[int]:
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return self._physical_min
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@property
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def physical_max(self) -> Optional[int]:
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return self._physical_max
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# flags
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@property
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def constant(self) -> bool:
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return self._flags & (1 << 0) != 0
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@property
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def data(self) -> bool:
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return self._flags & (1 << 0) == 0
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@property
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def relative(self) -> bool:
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return self._flags & (1 << 2) != 0
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@property
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def absolute(self) -> bool:
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return self._flags & (1 << 2) == 0
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class VariableItem(MainItem):
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_INCOMPATIBLE_TYPES = (
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# array types
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hid_parser.data.UsageTypes.SELECTOR,
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# collection types
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hid_parser.data.UsageTypes.NAMED_ARRAY,
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hid_parser.data.UsageTypes.COLLECTION_APPLICATION,
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hid_parser.data.UsageTypes.COLLECTION_LOGICAL,
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hid_parser.data.UsageTypes.COLLECTION_PHYSICAL,
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hid_parser.data.UsageTypes.USAGE_SWITCH,
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hid_parser.data.UsageTypes.USAGE_MODIFIER,
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)
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def __init__(
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self,
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offset: int,
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size: int,
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flags: int,
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usage: Usage,
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logical_min: int,
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logical_max: int,
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physical_min: Optional[int] = None,
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physical_max: Optional[int] = None,
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):
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super().__init__(offset, size, flags, logical_min, logical_max, physical_min, physical_max)
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self._usage = usage
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try:
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if all(usage_type in self._INCOMPATIBLE_TYPES for usage_type in usage.usage_types):
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warnings.warn(HIDComplianceWarning(f"{usage} has no compatible usage types with a variable item")) # noqa
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except (KeyError, ValueError):
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pass
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def __repr__(self) -> str:
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return f"VariableItem(offset={self.offset}, size={self.size}, usage={self.usage})"
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def parse(self, data: Sequence[int]) -> UsageValue:
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data = _data_bit_shift(data, self.offset, self.size)
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if hid_parser.data.UsageTypes.LINEAR_CONTROL in self.usage.usage_types or any(
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usage_type in hid_parser.data.UsageTypesData and usage_type != hid_parser.data.UsageTypes.SELECTOR
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for usage_type in self.usage.usage_types
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): # int
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value = int.from_bytes(data, byteorder="little")
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elif (
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hid_parser.data.UsageTypes.ON_OFF_CONTROL in self.usage.usage_types
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and not self.preferred_state
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and self.logical_min == -1
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and self.logical_max == 1
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): # bool - -1 is false
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value = int.from_bytes(data, byteorder="little") == 1
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else: # bool
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value = bool.from_bytes(data, byteorder="little")
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return UsageValue(self, value)
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@property
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def usage(self) -> Usage:
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return self._usage
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# flags (variable only, see HID spec 1.11 page 32)
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@property
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def wrap(self) -> bool:
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return self._flags & (1 << 3) != 0
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@property
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def linear(self) -> bool:
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return self._flags & (1 << 4) != 0
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@property
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def preferred_state(self) -> bool:
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return self._flags & (1 << 5) != 0
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@property
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def null_state(self) -> bool:
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return self._flags & (1 << 6) != 0
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@property
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def buffered_bytes(self) -> bool:
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return self._flags & (1 << 7) != 0
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@property
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def bitfield(self) -> bool:
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return self._flags & (1 << 7) == 0
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class ArrayItem(MainItem):
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_INCOMPATIBLE_TYPES = (
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# variable types
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hid_parser.data.UsageTypes.LINEAR_CONTROL,
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hid_parser.data.UsageTypes.ON_OFF_CONTROL,
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hid_parser.data.UsageTypes.MOMENTARY_CONTROL,
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hid_parser.data.UsageTypes.ONE_SHOT_CONTROL,
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hid_parser.data.UsageTypes.RE_TRIGGER_CONTROL,
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hid_parser.data.UsageTypes.STATIC_VALUE,
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hid_parser.data.UsageTypes.STATIC_FLAG,
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hid_parser.data.UsageTypes.DYNAMIC_VALUE,
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hid_parser.data.UsageTypes.DYNAMIC_FLAG,
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# collection types
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hid_parser.data.UsageTypes.NAMED_ARRAY,
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hid_parser.data.UsageTypes.COLLECTION_APPLICATION,
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hid_parser.data.UsageTypes.COLLECTION_LOGICAL,
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hid_parser.data.UsageTypes.COLLECTION_PHYSICAL,
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hid_parser.data.UsageTypes.USAGE_SWITCH,
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hid_parser.data.UsageTypes.USAGE_MODIFIER,
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)
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_IGNORE_USAGE_VALUES = ((hid_parser.data.UsagePages.KEYBOARD_KEYPAD_PAGE, hid_parser.data.KeyboardKeypad.NO_EVENT),)
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def __init__(
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self,
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offset: int,
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size: int,
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count: int,
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flags: int,
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usages: List[Usage],
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logical_min: int,
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logical_max: int,
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physical_min: Optional[int] = None,
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physical_max: Optional[int] = None,
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):
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super().__init__(offset, size, flags, logical_min, logical_max, physical_min, physical_max)
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self._count = count
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self._usages = usages
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self._page = self._usages[0].page if usages else None
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for usage in self._usages:
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if usage.page != self._page:
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raise ValueError(f"Mismatching usage page in usage: {usage} (expecting {self._usages[0]})")
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try:
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if all(usage_type in self._INCOMPATIBLE_TYPES for usage_type in usage.usage_types):
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warnings.warn(HIDComplianceWarning(f"{usage} has no compatible usage types with an array item")) # noqa
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except (KeyError, ValueError):
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pass
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self._ignore_usages: List[Usage] = []
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for page, usage_id in self._IGNORE_USAGE_VALUES:
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assert isinstance(page, int) and isinstance(usage_id, int)
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self._ignore_usages.append(Usage(page, usage_id))
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|
|
def __repr__(self) -> str:
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return (
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textwrap.dedent(
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"""
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|
ArrayItem(
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offset={}, size={}, count={},
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usages=[
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{},
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],
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)
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"""
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)
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.strip()
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.format(
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self.offset,
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self.size,
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self.count,
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",\n ".join(repr(usage) for usage in self.usages),
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)
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)
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|
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def parse(self, data: Sequence[int]) -> Dict[Usage, UsageValue]:
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usage_values: Dict[Usage, UsageValue] = {}
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|
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for i in range(self.count):
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aligned_data = _data_bit_shift(data, self.offset + i * 8, self.size)
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usage = Usage(self._page, int.from_bytes(aligned_data, byteorder="little"))
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|
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if usage in self._ignore_usages:
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continue
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|
|
# vendor usages don't have usage any standard type - just save the raw data
|
|
if usage.page in hid_parser.data.UsagePages.VENDOR_PAGE:
|
|
if usage not in usage_values:
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|
usage_values[usage] = VendorUsageValue(
|
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self,
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|
value=int.from_bytes(aligned_data, byteorder="little"),
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)
|
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typing.cast(VendorUsageValue, usage_values[usage]).list.append(
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int.from_bytes(aligned_data, byteorder="little")
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)
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continue
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|
|
|
if usage in self._usages and all(usage_type not in self._INCOMPATIBLE_TYPES for usage_type in usage.usage_types):
|
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usage_values[usage] = UsageValue(self, True)
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|
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return usage_values
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|
|
@property
|
|
def count(self) -> int:
|
|
return self._count
|
|
|
|
@property
|
|
def usages(self) -> List[Usage]:
|
|
return self._usages
|
|
|
|
|
|
class InvalidReportDescriptor(Exception):
|
|
pass
|
|
|
|
|
|
# report ID (None for no report ID), item list
|
|
_ITEM_POOL = Dict[Optional[int], List[BaseItem]]
|
|
|
|
|
|
class ReportDescriptor:
|
|
def __init__(self, data: Sequence[int]) -> None:
|
|
self._data = data
|
|
|
|
for byte in data:
|
|
if byte < 0 or byte > 255:
|
|
raise InvalidReportDescriptor(
|
|
f"A report descriptor should be represented by a list of bytes: found value {byte}"
|
|
)
|
|
|
|
self._input: _ITEM_POOL = {}
|
|
self._output: _ITEM_POOL = {}
|
|
self._feature: _ITEM_POOL = {}
|
|
|
|
self._parse()
|
|
|
|
@property
|
|
def data(self) -> Sequence[int]:
|
|
return self._data
|
|
|
|
@property
|
|
def input_report_ids(self) -> List[Optional[int]]:
|
|
return list(self._input.keys())
|
|
|
|
@property
|
|
def output_report_ids(self) -> List[Optional[int]]:
|
|
return list(self._output.keys())
|
|
|
|
@property
|
|
def feature_report_ids(self) -> List[Optional[int]]:
|
|
return list(self._feature.keys())
|
|
|
|
def _get_report_size(self, items: List[BaseItem]) -> BitNumber:
|
|
size = 0
|
|
for item in items:
|
|
if isinstance(item, ArrayItem):
|
|
size += item.size * item.count
|
|
else:
|
|
size += item.size
|
|
return BitNumber(size)
|
|
|
|
def get_input_items(self, report_id: Optional[int] = None) -> List[BaseItem]:
|
|
return self._input[report_id]
|
|
|
|
@functools.lru_cache(maxsize=16) # noqa
|
|
def get_input_report_size(self, report_id: Optional[int] = None) -> BitNumber:
|
|
return self._get_report_size(self.get_input_items(report_id))
|
|
|
|
def get_output_items(self, report_id: Optional[int] = None) -> List[BaseItem]:
|
|
return self._output[report_id]
|
|
|
|
@functools.lru_cache(maxsize=16) # noqa
|
|
def get_output_report_size(self, report_id: Optional[int] = None) -> BitNumber:
|
|
return self._get_report_size(self.get_output_items(report_id))
|
|
|
|
def get_feature_items(self, report_id: Optional[int] = None) -> List[BaseItem]:
|
|
return self._feature[report_id]
|
|
|
|
@functools.lru_cache(maxsize=16) # noqa
|
|
def get_feature_report_size(self, report_id: Optional[int] = None) -> BitNumber:
|
|
return self._get_report_size(self.get_feature_items(report_id))
|
|
|
|
def _parse_report_items(self, items: List[BaseItem], data: Sequence[int]) -> Dict[Usage, UsageValue]:
|
|
parsed: Dict[Usage, UsageValue] = {}
|
|
for item in items:
|
|
if isinstance(item, VariableItem):
|
|
parsed[item.usage] = item.parse(data)
|
|
elif isinstance(item, ArrayItem):
|
|
usage_values = item.parse(data)
|
|
for usage in usage_values:
|
|
if usage in parsed:
|
|
warnings.warn(HIDReportWarning(f"Overriding usage: {usage}")) # noqa
|
|
parsed.update(usage_values)
|
|
elif isinstance(item, PaddingItem):
|
|
pass
|
|
else:
|
|
raise TypeError(f"Unknown item: {item}")
|
|
return parsed
|
|
|
|
def _parse_report(self, item_poll: _ITEM_POOL, data: Sequence[int]) -> Dict[Usage, UsageValue]:
|
|
if None in item_poll: # unnumbered reports
|
|
return self._parse_report_items(item_poll[None], data)
|
|
else: # numbered reports
|
|
return self._parse_report_items(item_poll[data[0]], data[1:])
|
|
|
|
def parse_input_report(self, data: Sequence[int]) -> Dict[Usage, UsageValue]:
|
|
return self._parse_report(self._input, data)
|
|
|
|
def parse_output_report(self, data: Sequence[int]) -> Dict[Usage, UsageValue]:
|
|
return self._parse_report(self._output, data)
|
|
|
|
def parse_feature_report(self, data: Sequence[int]) -> Dict[Usage, UsageValue]:
|
|
return self._parse_report(self._feature, data)
|
|
|
|
def _iterate_raw(self) -> Iterable[Tuple[int, int, Optional[int]]]:
|
|
i = 0
|
|
while i < len(self.data):
|
|
prefix = self.data[i]
|
|
tag = (prefix & 0b11110000) >> 4
|
|
typ = (prefix & 0b00001100) >> 2
|
|
size = prefix & 0b00000011
|
|
|
|
if size == 3: # 6.2.2.2
|
|
size = 4
|
|
|
|
if size == 0:
|
|
data = None
|
|
elif size == 1:
|
|
if i + 1 >= len(self.data):
|
|
raise InvalidReportDescriptor(f"Invalid size: expecting >={i + 1}, got {len(self.data)}")
|
|
data = self.data[i + 1]
|
|
else:
|
|
if i + 1 + size >= len(self.data):
|
|
raise InvalidReportDescriptor(f"Invalid size: expecting >={i + 1 + size}, got {len(self.data)}")
|
|
if size == 2:
|
|
pack_type = "H"
|
|
elif size == 4:
|
|
pack_type = "L"
|
|
else:
|
|
raise ValueError(f"Invalid item size: {size}")
|
|
data = struct.unpack(f"<{pack_type}", bytes(self.data[i + 1 : i + 1 + size]))[0]
|
|
|
|
yield typ, tag, data
|
|
|
|
i += size + 1
|
|
|
|
def _append_item(
|
|
self,
|
|
offset_list: Dict[Optional[int], int],
|
|
pool: _ITEM_POOL,
|
|
report_id: Optional[int],
|
|
item: BaseItem,
|
|
) -> None:
|
|
offset_list[report_id] += item.size
|
|
if report_id in pool:
|
|
pool[report_id].append(item)
|
|
else:
|
|
pool[report_id] = [item]
|
|
|
|
def _append_items(
|
|
self,
|
|
offset_list: Dict[Optional[int], int],
|
|
pool: _ITEM_POOL,
|
|
report_id: Optional[int],
|
|
report_count: int,
|
|
report_size: int,
|
|
usages: List[Usage],
|
|
flags: int,
|
|
data: Dict[str, Any],
|
|
) -> None:
|
|
item: BaseItem
|
|
is_array = flags & (1 << 1) == 0 # otherwise variable
|
|
|
|
"""
|
|
HID 1.11, 6.2.2.9 says reports can be byte aligned by declaring a
|
|
main item without usage. A main item can have multiple usages, as I
|
|
interpret it, items are only considered padding when they have NO
|
|
usages.
|
|
"""
|
|
if len(usages) == 0 or not usages:
|
|
for _ in range(report_count):
|
|
item = PaddingItem(offset_list[report_id], report_size)
|
|
self._append_item(offset_list, pool, report_id, item)
|
|
return
|
|
|
|
if is_array:
|
|
item = ArrayItem(
|
|
offset=offset_list[report_id],
|
|
size=report_size,
|
|
usages=usages,
|
|
count=report_count,
|
|
flags=flags,
|
|
**data,
|
|
)
|
|
self._append_item(offset_list, pool, report_id, item)
|
|
else:
|
|
if len(usages) != report_count:
|
|
error_str = f"Expecting {report_count} usages but got {len(usages)}"
|
|
if len(usages) == 1:
|
|
warnings.warn(HIDComplianceWarning(error_str)) # noqa
|
|
usages *= report_count
|
|
else:
|
|
raise InvalidReportDescriptor(error_str)
|
|
|
|
for usage in usages:
|
|
item = VariableItem(
|
|
offset=offset_list[report_id],
|
|
size=report_size,
|
|
usage=usage,
|
|
flags=flags,
|
|
**data,
|
|
)
|
|
self._append_item(offset_list, pool, report_id, item)
|
|
|
|
def _parse(self, level: int = 0, file: TextIO = sys.stdout) -> None: # noqa: C901
|
|
offset_input: Dict[Optional[int], int] = {
|
|
None: 0,
|
|
}
|
|
offset_output: Dict[Optional[int], int] = {
|
|
None: 0,
|
|
}
|
|
offset_feature: Dict[Optional[int], int] = {
|
|
None: 0,
|
|
}
|
|
report_id: Optional[int] = None
|
|
report_count: Optional[int] = None
|
|
report_size: Optional[int] = None
|
|
usage_page: Optional[int] = None
|
|
usages: List[Usage] = []
|
|
usage_min: Optional[int] = None
|
|
glob: Dict[str, Any] = {}
|
|
local: Dict[str, Any] = {}
|
|
|
|
for typ, tag, data in self._iterate_raw():
|
|
if typ == Type.MAIN:
|
|
if tag in (TagMain.COLLECTION, TagMain.END_COLLECTION):
|
|
usages = []
|
|
|
|
# we only care about input, output and features for now
|
|
if tag not in (TagMain.INPUT, TagMain.OUTPUT, TagMain.FEATURE):
|
|
continue
|
|
|
|
if report_count is None:
|
|
raise InvalidReportDescriptor("Trying to append an item but no report count given")
|
|
if report_size is None:
|
|
raise InvalidReportDescriptor("Trying to append an item but no report size given")
|
|
|
|
if tag == TagMain.INPUT:
|
|
if data is None:
|
|
raise InvalidReportDescriptor("Invalid input item")
|
|
self._append_items(
|
|
offset_input, self._input, report_id, report_count, report_size, usages, data, {**glob, **local}
|
|
)
|
|
|
|
elif tag == TagMain.OUTPUT:
|
|
if data is None:
|
|
raise InvalidReportDescriptor("Invalid output item")
|
|
self._append_items(
|
|
offset_output, self._output, report_id, report_count, report_size, usages, data, {**glob, **local}
|
|
)
|
|
|
|
elif tag == TagMain.FEATURE:
|
|
if data is None:
|
|
raise InvalidReportDescriptor("Invalid feature item")
|
|
self._append_items(
|
|
offset_feature, self._feature, report_id, report_count, report_size, usages, data, {**glob, **local}
|
|
)
|
|
|
|
# clear local
|
|
usages = []
|
|
usage_min = None
|
|
local = {}
|
|
|
|
# we don't care about collections for now, maybe in the future...
|
|
|
|
elif typ == Type.GLOBAL:
|
|
if tag == TagGlobal.USAGE_PAGE:
|
|
usage_page = data
|
|
|
|
elif tag == TagGlobal.LOGICAL_MINIMUM:
|
|
glob["logical_min"] = data
|
|
|
|
elif tag == TagGlobal.LOGICAL_MAXIMUM:
|
|
glob["logical_max"] = data
|
|
|
|
elif tag == TagGlobal.PHYSICAL_MINIMUM:
|
|
glob["physical_min"] = data
|
|
|
|
elif tag == TagGlobal.PHYSICAL_MAXIMUM:
|
|
glob["physical_max"] = data
|
|
|
|
elif tag == TagGlobal.REPORT_SIZE:
|
|
report_size = data
|
|
|
|
elif tag == TagGlobal.REPORT_ID:
|
|
if not report_id and (self._input or self._output or self._feature):
|
|
raise InvalidReportDescriptor("Tried to set a report ID in a report that does not use them")
|
|
report_id = data
|
|
# initialize the item offset for this report ID
|
|
for offset_list in (offset_input, offset_output, offset_feature):
|
|
if report_id not in offset_list:
|
|
offset_list[report_id] = 0
|
|
|
|
elif tag in (TagGlobal.UNIT, TagGlobal.UNIT_EXPONENT):
|
|
warnings.warn( # noqa
|
|
HIDUnsupportedWarning("Data specifies a unit or unit exponent, but we don't support those yet")
|
|
)
|
|
|
|
elif tag in (TagGlobal.PUSH, TagGlobal.POP):
|
|
warnings.warn(HIDUnsupportedWarning("Push and pop are not supported yet")) # noqa
|
|
|
|
elif tag == TagGlobal.REPORT_COUNT:
|
|
report_count = data
|
|
|
|
else:
|
|
raise NotImplementedError(f"Unsupported global tag: {bin(tag)}")
|
|
|
|
elif typ == Type.LOCAL:
|
|
if tag == TagLocal.USAGE:
|
|
if usage_page is None:
|
|
raise InvalidReportDescriptor("Usage field found but no usage page")
|
|
usages.append(Usage(usage_page, data))
|
|
|
|
elif tag == TagLocal.USAGE_MINIMUM:
|
|
usage_min = data
|
|
|
|
elif tag == TagLocal.USAGE_MAXIMUM:
|
|
if usage_min is None:
|
|
raise InvalidReportDescriptor("Usage maximum set but no usage minimum")
|
|
if data is None:
|
|
raise InvalidReportDescriptor("Invalid usage maximum value")
|
|
for i in range(usage_min, data + 1):
|
|
usages.append(Usage(usage_page, i))
|
|
usage_min = None
|
|
|
|
elif tag in (TagLocal.STRING_INDEX, TagLocal.STRING_MINIMUM, TagLocal.STRING_MAXIMUM):
|
|
pass # we don't care about this information to parse the reports
|
|
|
|
else:
|
|
raise NotImplementedError(f"Unsupported local tag: {bin(tag)}")
|
|
|
|
@staticmethod
|
|
def _get_main_item_desc(value: int) -> str:
|
|
fields = [
|
|
"Constant" if value & (1 << 0) else "Data",
|
|
"Variable" if value & (1 << 1) else "Array",
|
|
"Relative" if value & (1 << 2) else "Absolute",
|
|
]
|
|
if value & (1 << 1):
|
|
# variable only
|
|
fields += [
|
|
"Wrap" if value & (1 << 3) else "No Wrap",
|
|
"Non Linear" if value & (1 << 4) else "Linear",
|
|
"No Preferred State" if value & (1 << 5) else "Preferred State",
|
|
"Null State" if value & (1 << 6) else "No Null position",
|
|
"Buffered Bytes" if value & (1 << 8) else "Bit Field",
|
|
]
|
|
return ", ".join(fields)
|
|
|
|
def print(self, level: int = 0, file: TextIO = sys.stdout) -> None: # noqa: C901
|
|
def printl(string: str) -> None:
|
|
print(" " * level + string, file=file)
|
|
|
|
usage_data: Union[Literal[False], Optional[hid_parser.data._Data]] = False
|
|
|
|
for typ, tag, data in self._iterate_raw():
|
|
if typ == Type.MAIN:
|
|
if tag == TagMain.INPUT:
|
|
if data is None:
|
|
raise InvalidReportDescriptor("Invalid input item")
|
|
printl(f"Input ({self._get_main_item_desc(data)})")
|
|
|
|
elif tag == TagMain.OUTPUT:
|
|
if data is None:
|
|
raise InvalidReportDescriptor("Invalid output item")
|
|
printl(f"Output ({self._get_main_item_desc(data)})")
|
|
|
|
elif tag == TagMain.FEATURE:
|
|
if data is None:
|
|
raise InvalidReportDescriptor("Invalid feature item")
|
|
printl(f"Feature ({self._get_main_item_desc(data)})")
|
|
|
|
elif tag == TagMain.COLLECTION:
|
|
printl(f"Collection ({hid_parser.data.Collections.get_description(data)})")
|
|
level += 1
|
|
|
|
elif tag == TagMain.END_COLLECTION:
|
|
level -= 1
|
|
printl("End Collection")
|
|
|
|
elif typ == Type.GLOBAL:
|
|
if tag == TagGlobal.USAGE_PAGE:
|
|
try:
|
|
printl(f"Usage Page ({hid_parser.data.UsagePages.get_description(data)})")
|
|
try:
|
|
usage_data = hid_parser.data.UsagePages.get_subdata(data)
|
|
except ValueError:
|
|
usage_data = None
|
|
except KeyError:
|
|
printl(f"Usage Page (Unknown 0x{data:04x})")
|
|
|
|
elif tag == TagGlobal.LOGICAL_MINIMUM:
|
|
printl(f"Logical Minimum ({data})")
|
|
|
|
elif tag == TagGlobal.LOGICAL_MAXIMUM:
|
|
printl(f"Logical Maximum ({data})")
|
|
|
|
elif tag == TagGlobal.PHYSICAL_MINIMUM:
|
|
printl(f"Physical Minimum ({data})")
|
|
|
|
elif tag == TagGlobal.PHYSICAL_MAXIMUM:
|
|
printl(f"Physical Maximum ({data})")
|
|
|
|
elif tag == TagGlobal.UNIT_EXPONENT:
|
|
printl(f"Unit Exponent (0x{data:04x})")
|
|
|
|
elif tag == TagGlobal.UNIT:
|
|
printl(f"Unit (0x{data:04x})")
|
|
|
|
elif tag == TagGlobal.REPORT_SIZE:
|
|
printl(f"Report Size ({data})")
|
|
|
|
elif tag == TagGlobal.REPORT_ID:
|
|
printl(f"Report ID (0x{data:02x})")
|
|
|
|
elif tag == TagGlobal.REPORT_COUNT:
|
|
printl(f"Report Count ({data})")
|
|
|
|
elif tag == TagGlobal.PUSH:
|
|
printl(f"Push ({data})")
|
|
|
|
elif tag == TagGlobal.POP:
|
|
printl(f"Pop ({data})")
|
|
|
|
elif typ == Type.LOCAL:
|
|
if tag == TagLocal.USAGE:
|
|
if usage_data is False:
|
|
raise InvalidReportDescriptor("Usage field found but no usage page")
|
|
|
|
if usage_data:
|
|
try:
|
|
printl(f"Usage ({usage_data.get_description(data)})")
|
|
except KeyError:
|
|
printl(f"Usage (Unknown, 0x{data:04x})")
|
|
else:
|
|
printl(f"Usage (0x{data:04x})")
|
|
|
|
elif tag == TagLocal.USAGE_MINIMUM:
|
|
printl(f"Usage Minimum ({data})")
|
|
|
|
elif tag == TagLocal.USAGE_MAXIMUM:
|
|
printl(f"Usage Maximum ({data})")
|
|
|
|
elif tag == TagLocal.DESIGNATOR_INDEX:
|
|
printl(f"Designator Index ({data})")
|
|
|
|
elif tag == TagLocal.DESIGNATOR_MINIMUM:
|
|
printl(f"Designator Minimum ({data})")
|
|
|
|
elif tag == TagLocal.DESIGNATOR_MAXIMUM:
|
|
printl(f"Designator Maximum ({data})")
|
|
|
|
elif tag == TagLocal.STRING_INDEX:
|
|
printl(f"String Index ({data})")
|
|
|
|
elif tag == TagLocal.STRING_MINIMUM:
|
|
printl(f"String Minimum ({data})")
|
|
|
|
elif tag == TagLocal.STRING_MAXIMUM:
|
|
printl(f"String Maximum ({data})")
|
|
|
|
elif tag == TagLocal.DELIMITER:
|
|
printl(f"Delemiter ({data})")
|