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lcms: allow infinite contrast

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Fixes #5980
This commit is contained in:
zc62 2019-03-04 05:46:35 -05:00 committed by sfan5
parent 89eacf8131
commit e37c253b92
2 changed files with 5 additions and 3 deletions
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6
DOCS/man/options.rst
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@ -5357,12 +5357,14 @@ The following video options are currently all specific to ``--vo=gpu`` and
Size of the 3D LUT generated from the ICC profile in each dimension.
Default is 64x64x64. Sizes may range from 2 to 512.
``--icc-contrast=<0-1000000>``
``--icc-contrast=<0-1000000|inf>``
Specifies an upper limit on the target device's contrast ratio. This is
detected automatically from the profile if possible, but for some profiles
it might be missing, causing the contrast to be assumed as infinite. As a
result, video may appear darker than intended. This only affects BT.1886
content. The default of 0 means no limit.
content. The default of 0 means no limit if the detected contrast is less
than 100000, and limits to 1000 otherwise. Use ``--icc-contrast=inf`` to
preserve the infinite contrast (most likely when using OLED displays).
``--blend-subtitles=<yes|video|no>``
Blend subtitles directly onto upscaled video frames, before interpolation

2
video/out/gpu/lcms.c
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@ -83,7 +83,7 @@ const struct m_sub_options mp_icc_conf = {
OPT_FLAG("icc-profile-auto", profile_auto, 0),
OPT_STRING("icc-cache-dir", cache_dir, M_OPT_FILE),
OPT_INT("icc-intent", intent, 0),
OPT_INTRANGE("icc-contrast", contrast, 0, 0, 1000000),
OPT_CHOICE_OR_INT("icc-contrast", contrast, 0, 0, 1000000, ({"inf", -1})),
OPT_STRING_VALIDATE("icc-3dlut-size", size_str, 0, validate_3dlut_size_opt),
OPT_REPLACED("3dlut-size", "icc-3dlut-size"),