[FFmpeg-devel] [PATCH v4 07/13] avcodec/libdavv1d: signal new AVFilmGrainParams members

[Niklas Haas <ffmpeg@haasn.xyz>]

From: Niklas Haas <git@haasn.dev>

Not directly signalled by AV1, but we should still set this accordingly
so that users will know what the original intended video characteristics
and chroma resolution were.
---
 libavcodec/libdav1d.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/libavcodec/libdav1d.c b/libavcodec/libdav1d.c
index 1aa2d1f3436..361b988825c 100644
--- a/libavcodec/libdav1d.c
+++ b/libavcodec/libdav1d.c
@@ -613,6 +613,8 @@ static int libdav1d_receive_frame(AVCodecContext *c, AVFrame *frame)
     if (p->frame_hdr->film_grain.present && (!dav1d->apply_grain ||
         (c->export_side_data & AV_CODEC_EXPORT_DATA_FILM_GRAIN))) {
         AVFilmGrainParams *fgp = av_film_grain_params_create_side_data(frame);
+        const AVPixFmtDescriptor *pixdesc = av_pix_fmt_desc_get(frame->format);
+        av_assert0(pixdesc);
         if (!fgp) {
             res = AVERROR(ENOMEM);
             goto fail;
@@ -620,6 +622,14 @@ static int libdav1d_receive_frame(AVCodecContext *c, AVFrame *frame)
 
         fgp->type = AV_FILM_GRAIN_PARAMS_AV1;
         fgp->seed = p->frame_hdr->film_grain.data.seed;
+        fgp->width = frame->width;
+        fgp->height = frame->height;
+        fgp->color_range = frame->color_range;
+        fgp->color_primaries = frame->color_primaries;
+        fgp->color_trc = frame->color_trc;
+        fgp->color_space = frame->colorspace;
+        fgp->subsampling_x = pixdesc->log2_chroma_w;
+        fgp->subsampling_y = pixdesc->log2_chroma_h;
         fgp->codec.aom.num_y_points = p->frame_hdr->film_grain.data.num_y_points;
         fgp->codec.aom.chroma_scaling_from_luma = p->frame_hdr->film_grain.data.chroma_scaling_from_luma;
         fgp->codec.aom.scaling_shift = p->frame_hdr->film_grain.data.scaling_shift;
-- 
2.44.0

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