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PSSH: Rework from_playready_pssh as a class method

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This commit is contained in:
rlaphoenix 2022-08-05 05:38:02 +01:00
parent 0537c9666c
commit 9d7eaf4949
1 changed files with 6 additions and 6 deletions
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12
pywidevine/pssh.py
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@ -179,14 +179,14 @@ class PSSH:
return cls(box)
@staticmethod
def from_playready_pssh(box: Container) -> Container:
@classmethod
def from_playready_pssh(cls, box: Container) -> PSSH:
"""
Convert a PlayReady PSSH to a Widevine PSSH.
Convert a PlayReady PSSH Box to a Widevine PSSH Box.
Note: The resulting Widevine PSSH will likely not be usable for Licensing. This
is because there is some data for a Widevine CENC Header that is not going to be
listed in a PlayReady PSSH.
is because there is some data for a Widevine Cenc Header that is missing from a
PlayReady PSSH Box.
This converted PSSH will only be useful for it's Key IDs, so realistically only
for matching Key IDs with a Track. As a fallback.
@ -211,7 +211,7 @@ class PSSH:
box.init_data = cenc_header.SerializeToString()
box.system_ID = PSSH.SystemId.Widevine
return box
return cls(box)
@staticmethod
def from_key_ids(key_ids: list[UUID]) -> Container: