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Have set_key_ids method call parse_key_ids directly 

This improves user-experience by allowing set_key_ids to accept more types of Key ID formats directly. This also reduces code duplication because the parse function also checks the validity of the Key IDs list for set_key_ids.
This commit is contained in:
rlaphoenix 2023-11-08 19:27:58 +00:00
parent 52fd5e74ba
commit cd990e0f4e
1 changed files with 5 additions and 10 deletions
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15
pywidevine/pssh.py
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@ -198,7 +198,7 @@ class PSSH:
# The version must be reinforced ONLY if we have key_id data or there's a possibility of making # The version must be reinforced ONLY if we have key_id data or there's a possibility of making
# a v1 PSSH box, that did not have key_IDs set in the PSSH box. # a v1 PSSH box, that did not have key_IDs set in the PSSH box.
pssh.version = version pssh.version = version
pssh.set_key_ids(cls.parse_key_ids(key_ids)) pssh.set_key_ids(key_ids)
return pssh return pssh
@ -384,30 +384,25 @@ class PSSH:
self.init_data = pro self.init_data = pro
self.system_id = PSSH.SystemId.PlayReady self.system_id = PSSH.SystemId.PlayReady
def set_key_ids(self, key_ids: list[UUID]) -> None: def set_key_ids(self, key_ids: list[Union[UUID, str, bytes]]) -> None:
"""Overwrite all Key IDs with the specified Key IDs.""" """Overwrite all Key IDs with the specified Key IDs."""
if self.system_id != PSSH.SystemId.Widevine: if self.system_id != PSSH.SystemId.Widevine:
# TODO: Add support for setting the Key IDs in a PlayReady Header # TODO: Add support for setting the Key IDs in a PlayReady Header
raise ValueError(f"Only Widevine PSSH Boxes are supported, not {self.system_id}.") raise ValueError(f"Only Widevine PSSH Boxes are supported, not {self.system_id}.")
if not isinstance(key_ids, list): key_id_uuids = self.parse_key_ids(key_ids)
raise TypeError(f"Expecting key_ids to be a list, not {key_ids!r}")
if not all(isinstance(x, UUID) for x in key_ids):
not_uuid = [x for x in key_ids if not isinstance(x, UUID)]
raise TypeError(f"All Key IDs in key_ids must be a {UUID}, not {not_uuid}")
if self.version == 1 or self.__key_ids: if self.version == 1 or self.__key_ids:
# only use v1 box key_ids if version is 1, or it's already being used # only use v1 box key_ids if version is 1, or it's already being used
# this is in case the service stupidly expects it for version 0 # this is in case the service stupidly expects it for version 0
self.__key_ids = key_ids self.__key_ids = key_id_uuids
cenc_header = WidevinePsshData() cenc_header = WidevinePsshData()
cenc_header.ParseFromString(self.init_data) cenc_header.ParseFromString(self.init_data)
cenc_header.key_ids[:] = [ cenc_header.key_ids[:] = [
key_id.bytes key_id.bytes
for key_id in key_ids for key_id in key_id_uuids
] ]
self.init_data = cenc_header.SerializeToString() self.init_data = cenc_header.SerializeToString()