diff options
Diffstat (limited to 'video/csputils.h')
| -rw-r--r-- | video/csputils.h | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/video/csputils.h b/video/csputils.h index 34e2894a28..965c313a02 100644 --- a/video/csputils.h +++ b/video/csputils.h @@ -145,9 +145,11 @@ struct mp_colorspace { // For many colorspace conversions, in particular those involving HDR, an // implicit reference white level is needed. Since this magic constant shows up -// a lot, give it an explicit name. The value of 100 cd/m² comes from ITU-R -// documents such as ITU-R BT.2100 -#define MP_REF_WHITE 100.0 +// a lot, give it an explicit name. The value of 203 cd/m² comes from ITU-R +// Report BT.2408, and the value for HLG comes from the cited HLG 75% level +// (transferred to scene space). +#define MP_REF_WHITE 203.0 +#define MP_REF_WHITE_HLG 3.17955 // Replaces unknown values in the first struct by those of the second struct void mp_colorspace_merge(struct mp_colorspace *orig, struct mp_colorspace *new); |