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>
Fri, 29 Apr 2016 12:23:41 +0000 (14:23 +0200)
commit19fcdd0c2f4c62695961413c9456ca525678879d
tree29c41df10d9e2ef2df5bb90ac94250a47c3d0d81
parent542cc06c649b6ea77b5313591ed8fe89ff987b0c
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