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>
Thu, 28 Apr 2016 01:47:13 +0000 (03:47 +0200)
commit3f69797e9b2f2d7060c5f7833479ab085bbca50f
tree1e14bd9dabbfc7f3b13008752bdb5186fe444c0c
parent49fc747b4874e9c21fc37811c612add2d1eb7eda
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