pixfmt: fixed wrong fix of comment
authorValerii Zapodovnikov <val.zapod.vz@gmail.com>
Mon, 31 May 2021 13:00:16 +0000 (16:00 +0300)
committerMichael Niedermayer <michael@niedermayer.cc>
Wed, 2 Jun 2021 15:30:24 +0000 (17:30 +0200)
commit6b1268f8c371c2e6efa5c8465b85ae9025254184
tree8d1a21a7a8c321522fd86e39ba34e930217cf0a6
parent071930de724166bfb90fc6d368c748771188fd94
pixfmt: fixed wrong fix of comment

This mostly reverts 785bfb1d7bb8de567c3aac1d9cc369b55ac9fb7b.
But I also added some clarifications so that nobody mixes primaries
with matrix again. SMPTE 240 and 170 primaires are the same, while
matrix coeff. are different, because 240 is derived from 170's new
primaries and white point while 170 uses BT.601 derived from BT.470
System M (yes, with Illuminant C) a.k.a. NTSC 1953. Some nits too.

Reviewed-by: Reto Kromer <lists@reto.ch>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
libavutil/pixfmt.h