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swscale/utils: set static/implied HDR metadata

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Provide default values for the fields added in the previous commit.
This commit is contained in:
Niklas Haas 2024-11-30 14:48:57 +01:00
parent a8d01dff9a
commit 5b21b7f52c
1 changed files with 17 additions and 0 deletions
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17
libswscale/utils.c
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@ -2654,6 +2654,8 @@ int ff_range_add(RangeList *rl, unsigned int start, unsigned int len)
SwsFormat ff_fmt_from_frame(const AVFrame *frame, int field)
{
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(frame->format);
const AVColorPrimariesDesc *primaries;
SwsFormat fmt = {
.width = frame->width,
.height = frame->height,
@ -2710,6 +2712,21 @@ SwsFormat ff_fmt_from_frame(const AVFrame *frame, int field)
fmt.interlaced = 1;
}
/* Set luminance and gamut information */
fmt.color.min_luma = av_make_q(0, 1);
switch (fmt.color.trc) {
case AVCOL_TRC_SMPTE2084:
fmt.color.max_luma = av_make_q(10000, 1); break;
case AVCOL_TRC_ARIB_STD_B67:
fmt.color.max_luma = av_make_q( 1000, 1); break; /* HLG reference display */
default:
fmt.color.max_luma = av_make_q( 203, 1); break; /* SDR reference brightness */
}
primaries = av_csp_primaries_desc_from_id(fmt.color.prim);
if (primaries)
fmt.color.gamut = primaries->prim;
return fmt;
}