pgssubdec: fix subpicture output colorspace and range
authorJan Ekström <jeebjp@gmail.com>
Sun, 24 Apr 2016 14:30:56 +0000 (17:30 +0300)
committerMichael Niedermayer <michael@niedermayer.cc>
Tue, 26 Apr 2016 00:47:09 +0000 (02:47 +0200)
commit666754c665713d02750fa8b882627602e589ebce
treef7274a54ba7942f183e9e411c9d9e187d819e4c5
parent4c896d6bd47870aee4684515747f4f7f927bebc0
pgssubdec: fix subpicture output colorspace and range

Functionality used before didn't widen the values from limited to
full range. Additionally, now the decoder uses BT.709 where it
should be used according to the video resolution.

Default for not yet set colorimetry is BT.709 due to most observed
HDMV content being HD.

BT.709 coefficients were gathered from the first two parts of BT.709
to BT.2020 conversion guide in ARIB STD-B62 (Pt. 1, Chapter 6.2.2).
They were additionally confirmed by manually calculating values.

Fixes #4637
(cherry picked from commit 9779b6262471d553c1ed811ff7312564e39d8adf)

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
libavcodec/pgssubdec.c
libavutil/colorspace.h