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Update Video.Range.from_cicp with changes in H.Sup19 (04/21) 

Note: There is some breaking changes here. If you manually worked with the Enum names here, then some of them have changed to better reflect the code points usage.

Generally speaking it should not affect service code.
This commit is contained in:
rlaphoenix 2023-09-04 00:48:50 +01:00
parent aff40df7d1
commit c159672181
1 changed files with 16 additions and 16 deletions
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32
devine/core/tracks/video.py
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@ -88,32 +88,34 @@ class Video(Track):
def from_cicp(primaries: int, transfer: int, matrix: int) -> Video.Range:
"""
ISO/IEC 23001-8 Coding-independent code points to Video Range.
Sources for Code points:
https://www.itu.int/rec/dologin_pub.asp?lang=e&id=T-REC-H.Sup19-201903-S!!PDF-E&type=items
Sources:
https://www.itu.int/rec/T-REC-H.Sup19-202104-I
"""
class Primaries(Enum):
Unspecified = 0
BT_709 = 1
BT_601_625 = 5
BT_601_525 = 6
BT_2020 = 9 # BT.2100 shares the same CP
BT_2020_and_2100 = 9
SMPTE_ST_2113_and_EG_4321 = 12 # P3D65
class Transfer(Enum):
Unspecified = 0
SDR_BT_709 = 1
SDR_BT_601_625 = 5
SDR_BT_601_525 = 6
SDR_BT_2020 = 14
SDR_BT_2100 = 15
PQ = 16
HLG = 18
BT_709 = 1
BT_601 = 6
BT_2020 = 14
BT_2100 = 15
BT_2100_PQ = 16
BT_2100_HLG = 18
class Matrix(Enum):
RGB = 0
YCbCr_BT_709 = 1
YCbCr_BT_601_625 = 5
YCbCr_BT_601_525 = 6
YCbCr_BT_2020 = 9 # YCbCr BT.2100 shares the same CP
YCbCr_BT_2020_and_2100 = 9 # YCbCr BT.2100 shares the same CP
ICtCp_BT_2100 = 14
primaries = Primaries(primaries)
transfer = Transfer(transfer)
@ -123,13 +125,11 @@ class Video(Track):
if (primaries, transfer, matrix) == (0, 0, 0):
return Video.Range.SDR
if primaries in (Primaries.BT_601_525, Primaries.BT_601_625):
elif primaries in (Primaries.BT_601_625, Primaries.BT_601_525):
return Video.Range.SDR
if transfer == Transfer.PQ:
elif transfer == Transfer.BT_2100_PQ:
return Video.Range.HDR10
elif transfer == Transfer.HLG:
elif transfer == Transfer.BT_2100_HLG:
return Video.Range.HLG
else:
return Video.Range.SDR