shithub: dav1d

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Output render size to Y4M

This adds A<W>:<H> to the Y4M header, to
preserve the intended aspect ratio for
anamorphic video.

--- a/tools/output/y4m2.c

+++ b/tools/output/y4m2.c

@@ -77,8 +77,13 @@

         chr_names_8bpc_i420[p->seq_hdr->chr > 2 ? DAV1D_CHR_UNKNOWN : p->seq_hdr->chr] :

         ss_names[p->p.layout][p->seq_hdr->hbd];

-    fprintf(c->f, "YUV4MPEG2 W%d H%d F%d:%d Ip C%s\n",

-            p->p.w, p->p.h, c->fps[0], c->fps[1], ss_name);

+    int fw = p->frame_hdr->width[0], fh = p->frame_hdr->height;

+    int rw = p->frame_hdr->render_width, rh = p->frame_hdr->render_height;

+    int aw = rw > rh ? rw : (rw + 0.5) / fw * fh;

+    int ah = rh > rw ? rh : (rh + 0.5) / fh * fw;

+

+    fprintf(c->f, "YUV4MPEG2 W%d H%d F%d:%d Ip A%d:%d C%s\n",

+            p->p.w, p->p.h, c->fps[0], c->fps[1], aw, ah, ss_name);

     return 0;

 }