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Fix handling of zero minimum HDR luminance

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This commit is contained in:
Cameron Gutman
2023-12-16 17:28:35 -06:00
parent d4050f3a4f
commit 9497657c83
1 changed files with 10 additions and 0 deletions
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10
app/streaming/video/ffmpeg-renderers/plvk.cpp
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@@ -351,6 +351,16 @@ bool PlVkRenderer::mapAvFrameToPlacebo(const AVFrame *frame, pl_frame* mappedFra
return false;
}
// libplacebo assumes a minimum luminance value of 0 means the actual value was unknown.
// Since we assume the host values are correct, we use the PL_COLOR_HDR_BLACK constant to
// indicate infinite contrast.
//
// NB: We also have to check that the AVFrame actually had metadata in the first place,
// because libplacebo may infer metadata if the frame didn't have any.
if (av_frame_get_side_data(frame, AV_FRAME_DATA_MASTERING_DISPLAY_METADATA) && !mappedFrame->color.hdr.min_luma) {
mappedFrame->color.hdr.min_luma = PL_COLOR_HDR_BLACK;
}
return true;
}