diff options
Diffstat (limited to 'video/csputils.h')
| -rw-r--r-- | video/csputils.h | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/video/csputils.h b/video/csputils.h index 9eaafbe75d..ec7369fa67 100644 --- a/video/csputils.h +++ b/video/csputils.h @@ -121,10 +121,15 @@ struct mp_colorspace { enum mp_csp_levels levels; enum mp_csp_prim primaries; enum mp_csp_trc gamma; - float nom_peak; // nominal (absolute) peak. 0 = auto/unknown - float sig_peak; // signal peak, highest value that occurs in the source + float sig_peak; // highest relative value in signal. 0 = unknown/auto }; +// 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 + // 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); @@ -230,7 +235,7 @@ int mp_chroma_location_to_av(enum mp_chroma_location mploc); void mp_get_chroma_location(enum mp_chroma_location loc, int *x, int *y); struct mp_csp_primaries mp_get_csp_primaries(enum mp_csp_prim csp); -float mp_csp_trc_nom_peak(enum mp_csp_trc trc, float ref_peak); +float mp_trc_nom_peak(enum mp_csp_trc trc); bool mp_trc_is_hdr(enum mp_csp_trc trc); /* Color conversion matrix: RGB = m * YUV + c |