def check_subtitle_cpl_duplicated_uuid(self, playlist, asset, folder):
""" Issue when using the same UUID for Subtitle XML and MXF.
This can cause issue on certain hardware, eg. Dolby server using
a version prior to 2.8.18, see patch notes extract below :
Fixed an error where the server did not extract SMPTE timedtext
(as in subtitles/captions) from the MXF file that was incorrectly
created using the same universally unique identifier (UUID) for
the MXF file and the main XML inside the MXF files. [DCPLYR-3418]
"""
st_dict = self.st_util.get_subtitle_xml(asset, folder)
if not st_dict:
return
st_uuid = self.st_util.get_subtitle_uuid(st_dict)
_, asset = asset
if self.dcp.schema == 'SMPTE':
mxf_uuid = asset['Probe'].get('AssetUUID', "")
if st_uuid == mxf_uuid:
raise CheckException(
"Using the same UUID for Subtitle ID and MXF UUID can "
"cause issue on Dolby server prior to 2.8.18 firmware.")
def check_cpl_reel_coherence(self, playlist):
""" CPL reel attributes shall be coherents across all reels. """
cpl = playlist['Info']['CompositionPlaylist']
coherence_keys = [
'EditRate',
'FrameRate',
'HighFrameRate',
'ScreenAspectRatio',
'Stereoscopic',
'Resolution',
'DecompositionLevels',
'Precincts',
'ChannelCount',
'ChannelFormat',
'ChannelConfiguration',
'SoundLanguage',
]
for k in coherence_keys:
if cpl[k] == "Mixed":
raise CheckException(
"{} is not coherent for all reels".format(k))
def check_dcnc_field_claim_audio(self, playlist, fields):
""" Audio format from CPL and ContentTitleText shall match. """
# NOTE : MXF track count don't seems to be related to the actual
# number of audio channels (there could be metadata and/or reserved
# tracks).
# TODO : SMPTE 428-12 add SoundField UL structure that could be used
# to have a more meanigful check
audio_format = fields['AudioType'].get('Channels')
audio_map = DCP_SETTINGS['sound']['format_channels']
sounds = list(
list_cpl_assets(playlist,
filters=['Sound'],
required_keys=['Probe']))
if sounds and audio_format:
_, asset = sounds[0]
asset_cc = asset['Probe']['ChannelCount']
cpl_cc = audio_map.get(audio_format)
if cpl_cc and asset_cc < cpl_cc:
raise CheckException(
"ContentTitle claims {} audio but CPL contains only "
" {} channels".format(audio_format, asset_cc))
def check_certif_date(self, cert, index):
""" Certificate date validation.
Reference :
SMPTE 430-2-2017 6.2 9
"""
# 9. Check time validity
# Note : Date are formatted in ASN.1 Time YYYYMMDDhhmmssZ
time_format = '%Y%m%d%H%M%SZ'
if self.context_time == 'NOW':
validity_time = datetime.now()
elif self.context_time != '':
validity_time = datetime.strptime(self.context_time, time_format)
if self.context_time:
not_before_str = cert.get_notBefore().decode("utf-8")
not_before = datetime.strptime(not_before_str, time_format)
not_after_str = cert.get_notAfter().decode("utf-8")
not_after = datetime.strptime(not_after_str, '%Y%m%d%H%M%SZ')
if validity_time < not_before or validity_time > not_after:
raise CheckException("Certificate is not valid at this time")
def check_subtitle_cpl_font_ref(self, playlist, asset, folder):
""" Subtitle font references check.
Reference :
SMPTE ST 428-7-2014 5.11.1
Interop TI Subtitle Spec 1.1 2.7
"""
st_dict = self.st_util.get_subtitle_xml(asset, folder)
if not st_dict:
return
if self.dcp.schema == 'SMPTE':
font_id = self.st_util.get_subtitle_elem(st_dict, 'LoadFont@ID')
font_ref = keys_by_name_dict(st_dict, 'Font@ID')
else:
font_id = self.st_util.get_subtitle_elem(st_dict, 'LoadFont@Id')
font_ref = keys_by_name_dict(st_dict, 'Font@Id')
for ref in font_ref:
if ref != font_id:
raise CheckException(
"Subtitle reference unknown font {} (loaded {})".format(
ref, font_id))
def metadata_cmp_pair(
self,
playlist,
metadata,
type_a,
type_b,
cmp=operator.eq,
message=""
):
for reel in playlist['Info']['CompositionPlaylist']['ReelList']:
metadatas = {
k: v[metadata] for k, v in six.iteritems(reel['Assets'])
if v.get(metadata) and k in [type_a, type_b]
}
vals = list(metadatas.values())
if len(vals) == 2 and not cmp(vals[0], vals[1]):
what = "{} / {} {} mismatch for Reel {}".format(
type_a, type_b, metadata, reel['Position'])
if message:
what += ", {}".format(message)
raise CheckException(what)
def check_picture_cpl_encoding(self, playlist, asset):
""" Picture wavelet transform levels SMPTE compliance. """
resolutions = self.settings['resolutions']
levels_map = {
'2K': self.settings['dwt_levels_2k'],
'4K': self.settings['dwt_levels_4k'],
}
_, asset = asset
if 'Probe' in asset and self.dcp.schema == 'SMPTE':
levels = asset['Probe']['DecompositionLevels']
resolution = asset['Probe']['Resolution']
resolution_name = ''
for k, v in six.iteritems(resolutions):
if resolution in v:
resolution_name = k
break
is_dci = resolution_name in levels_map
if is_dci and levels_map[resolution_name] != levels:
raise CheckException(
"Picture must have {} wavelet transform levels, {}"
" found".format(levels_map[resolution_name], levels))
def check_assets_cpl_hash(self, playlist, asset):
""" CPL assets Hash shall be present alongside KeyId (encrypted). """
if 'KeyId' in asset and 'Hash' not in asset:
raise CheckException("Encrypted asset must have a Hash element")
def check_cpl_referenced_by_pkl(self, playlist):
""" CPL shall be present in PKL. """
cpl = playlist['Info']['CompositionPlaylist']
pkl_id = cpl.get('PKLId')
if not pkl_id:
raise CheckException("CPL is not referenced in any PKL")
def check_sign_issuer_serial(self, source):
""" XML signature serial number check. """
sig = source['Signer']['X509Data']['X509IssuerSerial']
# Signer Serial number
if sig['X509SerialNumber'] != self.cert_list[-1].get_serial_number():
raise CheckException("Invalid Signer Serial Number")
def check_certif_version(self, cert, index):
""" Certificate version check (X509 v3). """
if cert.get_version() != crypto.x509.Version.v3.value:
raise CheckException("Invalid certificate version")
def check_assets_am_uuid(self, am, asset):
""" AssetMap UUIDs validation. """
uuid, _, _ = asset
if not check_uuid(uuid):
raise CheckException(
"Invalid uuid found : {}".format(uuid))
def check_assets_pkl_referenced_by_assetamp(self, pkl, asset):
""" PKL assets shall be present in AssetMap. """
uuid, _, _ = asset
# Note : dcp._list_asset is directly extracted from Assetmap
if uuid not in self.dcp._list_asset.keys():
raise CheckException("Not present in Assetmap")
def check_dcnc_field_claim_standard(self, playlist, fields):
""" DCP Standard coherence check. """
standard = fields['Standard'].get('Schema')
if standard and standard != self.dcp.schema:
raise CheckException("ContentTitle claims {} but DCP schema is {}".format(
standard, self.dcp.schema))