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>
Sun, 1 May 2016 03:00:45 +0000 (05:00 +0200)
commitcba830c4636a6b60cb1d925b57fcea473a80d518
treee8730cc7784747a0ab8b22e76a5cea242c64f7ca
parent7e5e531ec68b297cd8f86c70cf7c51bc8bc4dc3b
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