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336 lines
14 KiB
336 lines
14 KiB
5 years ago
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# -*- coding: utf-8 -*-
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from __future__ import unicode_literals
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import re
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from ctypes import c_void_p, c_wchar_p
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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 xml.dom import minidom
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from xml.etree import ElementTree
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from pymediainfo import MediaInfo
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from pymediainfo import __version__ as pymediainfo_version
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from six import ensure_text
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from .. import (
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OrderedDict,
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VIDEO_EXTENSIONS,
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)
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from ..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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VideoProfile,
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VideoProfileLevel,
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VideoProfileTier,
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YesNo,
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)
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from ..property import (
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MultiValue,
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Property,
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)
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from ..provider import (
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MalformedFileError,
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Provider,
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)
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from ..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 ..units import units
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from ..utils import (
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define_candidate,
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detect_os,
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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(object):
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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': ('__PATH__', ),
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'macos': ('__PATH__', ),
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}
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def __init__(self, location, version):
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"""Constructor."""
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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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output_type = 'OLDXML' if self.version >= (17, 10) else 'XML'
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return MediaInfo(ensure_text(check_output([self.location, '--Output=' + output_type, '--Full', filename])))
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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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try:
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output = ensure_text(check_output([candidate, '--version']))
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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(ensure_text(e.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 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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return MediaInfo.parse(filename, library_file=self.location)
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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 = 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(MediaInfoProvider, self).__init__(config, {
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'general': OrderedDict([
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('title', Property('title', description='media title')),
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('path', Property('complete_name', description='media path')),
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('duration', Duration('duration', description='media duration')),
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('size', Quantity('file_size', units.byte, description='media size')),
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('bit_rate', Quantity('overall_bit_rate', units.bps, description='media bit rate')),
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]),
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'video': OrderedDict([
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('id', Basic('track_id', int, allow_fallback=True, description='video track number')),
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('name', Property('name', description='video track name')),
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('language', Language('language', description='video language')),
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('duration', Duration('duration', description='video duration')),
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('size', Quantity('stream_size', units.byte, description='video stream size')),
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('width', Quantity('width', units.pixel)),
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('height', Quantity('height', units.pixel)),
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('scan_type', ScanType(config, 'scan_type', default='Progressive', description='video scan type')),
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('aspect_ratio', Basic('display_aspect_ratio', float, description='display aspect ratio')),
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('pixel_aspect_ratio', Basic('pixel_aspect_ratio', float, description='pixel aspect ratio')),
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('resolution', None), # populated with ResolutionRule
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('frame_rate', Quantity('frame_rate', units.FPS, float, description='video frame rate')),
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# frame_rate_mode
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('bit_rate', Quantity('bit_rate', units.bps, description='video bit rate')),
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('bit_depth', Quantity('bit_depth', units.bit, description='video bit depth')),
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('codec', VideoCodec(config, 'codec', description='video codec')),
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('profile', VideoProfile(config, 'codec_profile', description='video codec profile')),
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('profile_level', VideoProfileLevel(config, 'codec_profile', description='video codec profile level')),
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('profile_tier', VideoProfileTier(config, 'codec_profile', description='video codec profile tier')),
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('encoder', VideoEncoder(config, 'encoded_library_name', description='video encoder')),
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('media_type', Property('internet_media_type', 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': OrderedDict([
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('id', Basic('track_id', 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', description='audio duration')),
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('size', Quantity('stream_size', units.byte, description='audio stream size')),
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('codec', MultiValue(AudioCodec(config, 'codec', description='audio codec'))),
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('profile', MultiValue(AudioProfile(config, 'format_profile', description='audio codec profile'),
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delimiter=' / ')),
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('channels_count', MultiValue(AudioChannels('channel_s', description='audio channels count'))),
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('channel_positions', MultiValue(name='other_channel_positions', 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('bit_depth', units.bit, description='audio bit depth')),
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('bit_rate', MultiValue(Quantity('bit_rate', units.bps, description='audio bit rate'))),
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('bit_rate_mode', MultiValue(BitRateMode(config, 'bit_rate_mode', description='audio bit rate mode'))),
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('sampling_rate', MultiValue(Quantity('sampling_rate', 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': OrderedDict([
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('id', Basic('track_id', 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('captionservicename', private=True)),
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('closed_caption', None), # populated with ClosedCaptionRule
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('format', SubtitleFormat(config, 'codec_id', 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': OrderedDict([
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('language', LanguageRule('video language')),
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('resolution', ResolutionRule('video resolution')),
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]),
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'audio': OrderedDict([
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('language', LanguageRule('audio language')),
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('channels', AudioChannelsRule('audio channels')),
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('_atmosrule', AtmosRule('atmos rule')),
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('_dtshdrule', DtsHdRule('dts-hd rule')),
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]),
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'subtitle': OrderedDict([
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('language', LanguageRule('subtitle language')),
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('hearing_impaired', HearingImpairedRule('subtitle hearing impaired')),
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('closed_caption', ClosedCaptionRule('closed caption')),
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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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media_info = self.executor.extract_info(video_path)
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def debug_data():
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"""Debug data."""
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xml = ensure_text(ElementTree.tostring(media_info.xml_dom)).replace('\r', '').replace('\n', '')
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return ensure_text(minidom.parseString(xml).toprettyxml(indent=' ', newl='\n', encoding='utf-8'))
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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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data = media_info.to_data()
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result = {}
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if data.get('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 data.get('tracks'):
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track_type = track.get('track_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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versions.append((self.executor.location, 'v{}'.format('.'.join(map(str, self.executor.version)))))
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return OrderedDict(versions)
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