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357 lines
16 KiB
357 lines
16 KiB
import ctypes
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import json
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import os
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import re
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from ctypes import c_void_p, c_wchar_p
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from decimal import Decimal
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from logging import DEBUG, NullHandler, getLogger
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from subprocess import CalledProcessError, check_output
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from pymediainfo import MediaInfo
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from pymediainfo import __version__ as pymediainfo_version
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from knowit import VIDEO_EXTENSIONS
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from knowit.core import MultiValue, Property
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from knowit.properties import (
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AudioChannels,
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AudioCodec,
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AudioCompression,
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AudioProfile,
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Basic,
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BitRateMode,
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Duration,
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Language,
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Quantity,
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ScanType,
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SubtitleFormat,
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VideoCodec,
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VideoEncoder,
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VideoHdrFormat,
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VideoProfile,
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VideoProfileTier,
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YesNo,
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)
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from knowit.provider import (
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MalformedFileError,
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Provider,
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)
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from knowit.rules import (
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AtmosRule,
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AudioChannelsRule,
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ClosedCaptionRule,
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DtsHdRule,
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HearingImpairedRule,
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LanguageRule,
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ResolutionRule,
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)
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from knowit.rules.general import GuessTitleRule
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from knowit.units import units
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from knowit.utils import (
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define_candidate,
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detect_os, round_decimal,
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)
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logger = getLogger(__name__)
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logger.addHandler(NullHandler())
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WARN_MSG = r'''
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=========================================================================================
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MediaInfo not found on your system or could not be loaded.
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Visit https://mediaarea.net/ to download it.
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If you still have problems, please check if the downloaded version matches your system.
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To load MediaInfo from a specific location, please define the location as follow:
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knowit --mediainfo /usr/local/mediainfo/lib <video_path>
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knowit --mediainfo /usr/local/mediainfo/bin <video_path>
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knowit --mediainfo "C:\Program Files\MediaInfo" <video_path>
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knowit --mediainfo C:\Software\MediaInfo.dll <video_path>
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knowit --mediainfo C:\Software\MediaInfo.exe <video_path>
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knowit --mediainfo /opt/mediainfo/libmediainfo.so <video_path>
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knowit --mediainfo /opt/mediainfo/libmediainfo.dylib <video_path>
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=========================================================================================
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'''
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class MediaInfoExecutor:
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"""Media info executable knows how to execute media info: using ctypes or cli."""
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version_re = re.compile(r'\bv(?P<version>\d+(?:\.\d+)+)\b')
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locations = {
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'unix': ('/usr/local/mediainfo/lib', '/usr/local/mediainfo/bin', '__PATH__'),
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'windows': ('C:\\Program Files\\MediaInfo', 'C:\\Program Files (x86)\\MediaInfo', '__PATH__'),
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'macos': ('__PATH__', ),
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}
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def __init__(self, location, version):
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"""Initialize the object."""
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self.location = location
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self.version = version
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def extract_info(self, filename):
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"""Extract media info."""
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return self._execute(filename)
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def _execute(self, filename):
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raise NotImplementedError
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@classmethod
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def _get_version(cls, output):
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match = cls.version_re.search(output)
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if match:
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version = tuple([int(v) for v in match.groupdict()['version'].split('.')])
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return version
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@classmethod
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def get_executor_instance(cls, suggested_path=None):
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"""Return the executor instance."""
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os_family = detect_os()
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logger.debug('Detected os: %s', os_family)
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for exec_cls in (MediaInfoCTypesExecutor, MediaInfoCliExecutor):
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executor = exec_cls.create(os_family, suggested_path)
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if executor:
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return executor
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class MediaInfoCliExecutor(MediaInfoExecutor):
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"""Media info using cli."""
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names = {
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'unix': ('mediainfo', ),
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'windows': ('MediaInfo.exe', ),
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'macos': ('mediainfo', ),
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}
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def _execute(self, filename):
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data = check_output([self.location, '--Output=JSON', '--Full', filename]).decode()
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return json.loads(data) if data else {}
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@classmethod
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def _is_gui_exe(cls, candidate: str):
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if not candidate.endswith('MediaInfo.exe') or not os.path.isfile(candidate):
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return False
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try:
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shell32 = ctypes.WinDLL('shell32', use_last_error=True) # type: ignore
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return bool(shell32.ExtractIconExW(candidate, 0, None, None, 1))
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except Exception:
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return False
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@classmethod
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def create(cls, os_family=None, suggested_path=None):
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"""Create the executor instance."""
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for candidate in define_candidate(cls.locations, cls.names, os_family, suggested_path):
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if cls._is_gui_exe(candidate):
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continue
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try:
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output = check_output([candidate, '--version']).decode()
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version = cls._get_version(output)
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if version:
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logger.debug('MediaInfo cli detected: %s', candidate)
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return MediaInfoCliExecutor(candidate, version)
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except CalledProcessError as e:
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# old mediainfo returns non-zero exit code for mediainfo --version
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version = cls._get_version(e.output.decode())
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if version:
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logger.debug('MediaInfo cli detected: %s', candidate)
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return MediaInfoCliExecutor(candidate, version)
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except OSError:
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pass
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class MediaInfoCTypesExecutor(MediaInfoExecutor):
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"""Media info ctypes."""
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names = {
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'unix': ('libmediainfo.so.0', ),
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'windows': ('MediaInfo.dll', ),
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'macos': ('libmediainfo.0.dylib', 'libmediainfo.dylib'),
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}
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def _execute(self, filename):
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# Create a MediaInfo handle
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data = MediaInfo.parse(filename, library_file=self.location, output='JSON')
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return json.loads(data) if data else {}
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@classmethod
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def create(cls, os_family=None, suggested_path=None):
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"""Create the executor instance."""
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for candidate in define_candidate(cls.locations, cls.names, os_family, suggested_path):
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if MediaInfo.can_parse(candidate):
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lib, handle, lib_version_str, lib_version = MediaInfo._get_library(candidate)
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lib.MediaInfo_Option.argtypes = [c_void_p, c_wchar_p, c_wchar_p]
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lib.MediaInfo_Option.restype = c_wchar_p
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version = MediaInfoExecutor._get_version(lib.MediaInfo_Option(None, "Info_Version", ""))
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logger.debug('MediaInfo library detected: %s (v%s)', candidate, '.'.join(map(str, version)))
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return MediaInfoCTypesExecutor(candidate, version)
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class MediaInfoProvider(Provider):
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"""Media Info provider."""
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executor = None
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def __init__(self, config, suggested_path):
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"""Init method."""
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super().__init__(config, {
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'general': {
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'title': Property('Title', description='media title'),
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'path': Property('CompleteName', description='media path'),
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'duration': Duration('Duration', resolution=1000, description='media duration'),
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'size': Quantity('FileSize', unit=units.byte, description='media size'),
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'bit_rate': Quantity('OverallBitRate', unit=units.bps, description='media bit rate'),
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},
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'video': {
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'id': Basic('ID', data_type=int, allow_fallback=True, description='video track number'),
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'name': Property('Title', description='video track name'),
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'language': Language('Language', description='video language'),
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'duration': Duration('Duration', resolution=1000, description='video duration'),
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'size': Quantity('StreamSize', unit=units.byte, description='video stream size'),
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'width': Quantity('Width', unit=units.pixel),
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'height': Quantity('Height', unit=units.pixel),
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'scan_type': ScanType(config, 'ScanType', default='Progressive', description='video scan type'),
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'aspect_ratio': Basic('DisplayAspectRatio', data_type=Decimal,
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processor=lambda x: round_decimal(x, min_digits=1, max_digits=3),
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description='display aspect ratio'),
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'pixel_aspect_ratio': Basic('PixelAspectRatio', data_type=Decimal,
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processor=lambda x: round_decimal(x, min_digits=1, max_digits=3),
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description='pixel aspect ratio'),
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'resolution': None, # populated with ResolutionRule
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'frame_rate': Quantity('FrameRate', unit=units.FPS, data_type=Decimal, description='video frame rate'),
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# frame_rate_mode
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'bit_rate': Quantity('BitRate', unit=units.bps, description='video bit rate'),
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'bit_depth': Quantity('BitDepth', unit=units.bit, description='video bit depth'),
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'codec': VideoCodec(config, 'CodecID', description='video codec'),
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'profile': VideoProfile(config, 'Format_Profile', description='video codec profile'),
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'profile_level': Property('Format_Level', description='video codec profile level'),
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'profile_tier': VideoProfileTier(config, 'Format_Tier', description='video codec profile tier'),
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'encoder': VideoEncoder(config, 'Encoded_Library_Name', description='video encoder'),
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'hdr_format': MultiValue(VideoHdrFormat(config, 'HDR_Format', description='video hdr format'),
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delimiter=' / '),
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'media_type': Property('InternetMediaType', description='video media type'),
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'forced': YesNo('Forced', hide_value=False, description='video track forced'),
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'default': YesNo('Default', hide_value=False, description='video track default'),
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},
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'audio': {
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'id': Basic('ID', data_type=int, allow_fallback=True, description='audio track number'),
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'name': Property('Title', description='audio track name'),
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'language': Language('Language', description='audio language'),
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'duration': Duration('Duration', resolution=1000, description='audio duration'),
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'size': Quantity('StreamSize', unit=units.byte, description='audio stream size'),
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'codec': MultiValue(AudioCodec(config, 'CodecID', description='audio codec')),
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'format_commercial': Property('Format_Commercial', private=True),
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'profile': MultiValue(AudioProfile(config, 'Format_Profile', 'Format_AdditionalFeatures',
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description='audio codec profile'),
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delimiter=' / '),
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'channels_count': MultiValue(AudioChannels('Channels_Original', 'Channels',
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description='audio channels count')),
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'channel_positions': MultiValue(name='ChannelPositions_String2', handler=(lambda x, *args: x),
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delimiter=' / ', private=True, description='audio channels position'),
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'channels': None, # populated with AudioChannelsRule
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'bit_depth': Quantity('BitDepth', unit=units.bit, description='audio bit depth'),
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'bit_rate': MultiValue(Quantity('BitRate', unit=units.bps, description='audio bit rate')),
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'bit_rate_mode': MultiValue(BitRateMode(config, 'BitRate_Mode', description='audio bit rate mode')),
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'sampling_rate': MultiValue(Quantity('SamplingRate', unit=units.Hz, description='audio sampling rate')),
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'compression': MultiValue(AudioCompression(config, 'Compression_Mode',
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description='audio compression')),
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'forced': YesNo('Forced', hide_value=False, description='audio track forced'),
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'default': YesNo('Default', hide_value=False, description='audio track default'),
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},
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'subtitle': {
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'id': Basic('ID', data_type=int, allow_fallback=True, description='subtitle track number'),
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'name': Property('Title', description='subtitle track name'),
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'language': Language('Language', description='subtitle language'),
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'hearing_impaired': None, # populated with HearingImpairedRule
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'_closed_caption': Property('ClosedCaptionsPresent', private=True),
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'closed_caption': None, # populated with ClosedCaptionRule
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'format': SubtitleFormat(config, 'CodecID', description='subtitle format'),
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'forced': YesNo('Forced', hide_value=False, description='subtitle track forced'),
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'default': YesNo('Default', hide_value=False, description='subtitle track default'),
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},
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}, {
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'video': {
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'guessed': GuessTitleRule('guessed properties', private=True),
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'language': LanguageRule('video language', override=True),
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'resolution': ResolutionRule('video resolution'),
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},
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'audio': {
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'guessed': GuessTitleRule('guessed properties', private=True),
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'language': LanguageRule('audio language', override=True),
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'channels': AudioChannelsRule('audio channels'),
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'atmos': AtmosRule(config, 'atmos rule', private=True),
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'dtshd': DtsHdRule(config, 'dts-hd rule', private=True),
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},
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'subtitle': {
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'guessed': GuessTitleRule('guessed properties', private=True),
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'language': LanguageRule('subtitle language', override=True),
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'hearing_impaired': HearingImpairedRule('subtitle hearing impaired', override=True),
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'closed_caption': ClosedCaptionRule('closed caption', override=True),
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}
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})
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self.executor = MediaInfoExecutor.get_executor_instance(suggested_path)
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def accepts(self, video_path):
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"""Accept any video when MediaInfo is available."""
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if self.executor is None:
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logger.warning(WARN_MSG)
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self.executor = False
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return self.executor and video_path.lower().endswith(VIDEO_EXTENSIONS)
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def describe(self, video_path, context):
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"""Return video metadata."""
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data = self.executor.extract_info(video_path)
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def debug_data():
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"""Debug data."""
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return json.dumps(data, indent=4)
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context['debug_data'] = debug_data
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if logger.isEnabledFor(DEBUG):
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logger.debug('Video %r scanned using mediainfo %r has raw data:\n%s',
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video_path, self.executor.location, debug_data())
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result = {}
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tracks = data.get('media', {}).get('track', [])
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if tracks:
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general_tracks = []
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video_tracks = []
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audio_tracks = []
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subtitle_tracks = []
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for track in tracks:
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track_type = track.get('@type')
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if track_type == 'General':
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general_tracks.append(track)
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elif track_type == 'Video':
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video_tracks.append(track)
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elif track_type == 'Audio':
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audio_tracks.append(track)
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elif track_type == 'Text':
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subtitle_tracks.append(track)
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result = self._describe_tracks(video_path, general_tracks[0] if general_tracks else {},
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video_tracks, audio_tracks, subtitle_tracks, context)
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if not result:
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raise MalformedFileError
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result['provider'] = {
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'name': 'mediainfo',
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'version': self.version
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}
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return result
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@property
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def version(self):
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"""Return mediainfo version information."""
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versions = {'pymediainfo': pymediainfo_version}
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if self.executor:
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executor_version = '.'.join(map(str, self.executor.version))
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versions[self.executor.location] = f'v{executor_version}'
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return versions
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