785038c92c
lavu: Adding ARIB STD-B67 (hybrid log-gamma) enum value and transfer function.
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Adding hybrid log-gamma (https://en.wikipedia.org/wiki/Hybrid_Log-Gamma )
based on the standardization in ARIB STD-B67:
http://www.arib.or.jp/english/html/overview/doc/2-STD-B67v1_0.pdf
The choice of enum value of 18 is consistent with HEVC:
http://phenix.it-sudparis.eu/jct/doc_end_user/current_document.php?id=10481
And also with latest proposal for color format in mkv:
https://mailarchive.ietf.org/arch/search/?email_list=cellar&gbt=1&q=Colour+Format+proposal
The implementation assumes a nominal input range of [0, 1], which is
consistent with HEVC.
Signed-off-by: Neil Birkbeck <neil.birkbeck@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2016-06-01 16:32:08 +02:00
96d616052b
Merge commit 'd12b5b2f135aade4099f4b26b0fe678656158c13'
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* commit 'd12b5b2f135aade4099f4b26b0fe678656158c13':
build: Split test programs off into separate files
Some conversions done by: James Almer <jamrial@gmail.com>
Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
2016-05-11 19:13:03 +01:00
9b0eabdcdf
avutil/color_utils: Mark test_data as static const
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Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2016-03-03 21:17:45 +01:00
df4b5f076e
Add test for avpriv_get_trc_function_from_trc function
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Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2016-03-03 21:03:04 +01:00
bac9048265
avutil/color_utils: Add basic transfer functions for each AVColorTransferCharacteristic
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Most functions are valid over a domain and range of [0.0-1.0] but
some are defined over greater. This patch does not deal with
AVColorRange and assumes AVCOL_RANGE_JPEG for the returned values.
Signed-off-by: Kevin Wheatley <kevin.j.wheatley@gmail.com>
2015-09-10 23:53:05 +02:00
86b59e6a50
avutil: Extract gamma determination from PNG encoder for future use. Adds private avpriv_get_gamma_from_trc() function to libavutil.
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Signed-off-by: Kevin Wheatley <kevin.j.wheatley@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2015-03-05 12:26:22 +01:00
Neil Birkbeck
Derek Buitenhuis
Michael Niedermayer
NagaChaitanya Vellanki
Kevin Wheatley