mirror of
https://github.com/ARM-software/workload-automation.git
synced 2025-01-19 20:34:30 +00:00
b6e077c06b
Fixed new gamemode not being set for compatibility mode. Fixed input buffer not being flushed causing replay to fail. Fixed infinte loop if revent recording did not end correctly. Updated revent binaries.
249 lines
8.2 KiB
Python
249 lines
8.2 KiB
Python
# Copyright 2016 ARM Limited
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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import os
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import struct
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from datetime import datetime
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from collections import namedtuple
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GENERAL_MODE = 0
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GAMEPAD_MODE = 1
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u16_struct = struct.Struct('<H')
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u32_struct = struct.Struct('<I')
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u64_struct = struct.Struct('<Q')
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# See revent section in WA documentation for the detailed description of
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# the recording format.
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header_one_struct = struct.Struct('<6sH')
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header_two_struct = struct.Struct('<H6x') # version 2 onwards
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devid_struct = struct.Struct('<4H')
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devinfo_struct = struct.Struct('<4s96s96s96sI')
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absinfo_struct = struct.Struct('<7i')
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event_struct = struct.Struct('<HqqHHi')
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old_event_struct = struct.Struct("<i4xqqHHi") # prior to version 2
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def read_struct(fh, struct_spec):
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data = fh.read(struct_spec.size)
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return struct_spec.unpack(data)
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def read_string(fh):
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length, = read_struct(fh, u32_struct)
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str_struct = struct.Struct('<{}s'.format(length))
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return read_struct(fh, str_struct)[0]
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def count_bits(bitarr):
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return sum(bin(b).count('1') for b in bitarr)
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def is_set(bitarr, bit):
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byte = bit // 8
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bytebit = bit % 8
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return bitarr[byte] & bytebit
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absinfo = namedtuple('absinfo', 'ev_code value min max fuzz flat resolution')
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class UinputDeviceInfo(object):
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def __init__(self, fh):
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parts = read_struct(fh, devid_struct)
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self.bustype = parts[0]
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self.vendor = parts[1]
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self.product = parts[2]
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self.version = parts[3]
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self.name = read_string(fh)
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parts = read_struct(fh, devinfo_struct)
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self.ev_bits = bytearray(parts[0])
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self.key_bits = bytearray(parts[1])
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self.rel_bits = bytearray(parts[2])
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self.abs_bits = bytearray(parts[3])
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self.num_absinfo = parts[4]
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self.absinfo = [absinfo(*read_struct(fh, absinfo_struct))
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for _ in xrange(self.num_absinfo)]
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def __str__(self):
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return 'UInputInfo({})'.format(self.__dict__)
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class ReventEvent(object):
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def __init__(self, fh, legacy=False):
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if not legacy:
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dev_id, ts_sec, ts_usec, type_, code, value = read_struct(fh, event_struct)
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else:
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dev_id, ts_sec, ts_usec, type_, code, value = read_struct(fh, old_event_struct)
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self.device_id = dev_id
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self.time = datetime.fromtimestamp(ts_sec + float(ts_usec) / 1000000)
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self.type = type_
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self.code = code
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self.value = value
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def __str__(self):
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return 'InputEvent({})'.format(self.__dict__)
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class ReventRecording(object):
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"""
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Represents a parsed revent recording. This contains input events and device
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descriptions recorded by revent. Two parsing modes are supported. By
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default, the recording will be parsed in the "streaming" mode. In this
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mode, initial headers and device descritions are parsed on creation and an
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open file handle to the recording is saved. Events will be read from the
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file as they are being iterated over. In this mode, the entire recording is
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never loaded into memory at once. The underlying file may be "released" by
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calling ``close`` on the recroding, after which further iteration over the
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events will not be possible (but would still be possible to access the file
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description and header information).
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The alternative is to load the entire recording on creation (in which case
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the file handle will be closed once the recroding is loaded). This can be
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enabled by specifying ``streaming=False``. This will make it faster to
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subsequently iterate over the events, and also will not "hold" the file
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open.
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.. note:: When starting a new iteration over the events in streaming mode,
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the postion in the open file will be automatically reset to the
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beginning of the event stream. This means it's possible to iterate
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over the events multiple times without having to re-open the
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recording, however it is not possible to do so in parallel. If
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parallel iteration is required, streaming should be disabled.
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"""
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@property
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def duration(self):
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if self._duration is None:
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if self.stream:
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events = self._iter_events()
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try:
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first = last = events.next()
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except StopIteration:
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self._duration = 0
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for last in events:
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pass
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self._duration = (last.time - first.time).total_seconds()
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else: # not streaming
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if not self._events:
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self._duration = 0
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self._duration = (self._events[-1].time -
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self._events[0].time).total_seconds()
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return self._duration
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@property
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def events(self):
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if self.stream:
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return self._iter_events()
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else:
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return self._events
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def __init__(self, f, stream=True):
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self.device_paths = []
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self.gamepad_device = None
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self.num_events = None
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self.stream = stream
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self._events = None
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self._close_when_done = False
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self._events_start = None
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self._duration = None
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if hasattr(f, 'name'): # file-like object
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self.filepath = f.name
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self.fh = f
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else: # path to file
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self.filepath = f
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self.fh = open(self.filepath, 'rb')
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if not self.stream:
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self._close_when_done = True
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try:
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self._parse_header_and_devices(self.fh)
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self._events_start = self.fh.tell()
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if not self.stream:
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self._events = [e for e in self._iter_events()]
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finally:
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if self._close_when_done:
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self.close()
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def close(self):
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if self.fh is not None:
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self.fh.close()
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self.fh = None
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self._events_start = None
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def _parse_header_and_devices(self, fh):
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magic, version = read_struct(fh, header_one_struct)
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if magic != 'REVENT':
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raise ValueError('{} does not appear to be an revent recording'.format(self.filepath))
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self.version = version
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if self.version == 2:
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self.mode, = read_struct(fh, header_two_struct)
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if self.mode == GENERAL_MODE:
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self._read_devices(fh)
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elif self.mode == GAMEPAD_MODE:
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self._read_gamepad_info(fh)
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else:
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raise ValueError('Unexpected recording mode: {}'.format(self.mode))
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self.num_events, = read_struct(fh, u64_struct)
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elif 2 > self.version >= 0:
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self.mode = GENERAL_MODE
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self._read_devices(fh)
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else:
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raise ValueError('Invalid recording version: {}'.format(self.version))
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def _read_devices(self, fh):
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num_devices, = read_struct(fh, u32_struct)
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for _ in xrange(num_devices):
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self.device_paths.append(read_string(fh))
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def _read_gamepad_info(self, fh):
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self.gamepad_device = UinputDeviceInfo(fh)
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self.device_paths.append('[GAMEPAD]')
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def _iter_events(self):
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if self.fh is None:
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raise RuntimeError('Attempting to iterate over events of a closed recording')
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self.fh.seek(self._events_start)
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if self.version >= 2:
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for _ in xrange(self.num_events):
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yield ReventEvent(self.fh)
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else:
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file_size = os.path.getsize(self.filepath)
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while self.fh.tell() < file_size:
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yield ReventEvent(self.fh, legacy=True)
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def __iter__(self):
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for event in self.events:
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yield event
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def __enter__(self):
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return self
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def __exit__(self, *args):
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self.close()
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def __del__(self):
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self.close()
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