[FFmpeg-devel] [PATCH 3/9] avcodec/dovi_rpuenc: try to re-use existing vdr_rpu_id

[Niklas Haas <ffmpeg@haasn.xyz>]

From: Niklas Haas <git@haasn.dev>

And only override it if we either have an exact match, or if we still
have unused metadata slots (to avoid an overwrite).
---
 libavcodec/dovi_rpuenc.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/libavcodec/dovi_rpuenc.c b/libavcodec/dovi_rpuenc.c
index f0cfecc91b..30b6b09f1d 100644
--- a/libavcodec/dovi_rpuenc.c
+++ b/libavcodec/dovi_rpuenc.c
@@ -463,12 +463,12 @@ int ff_dovi_rpu_generate(DOVIContext *s, const AVDOVIMetadata *metadata,
         return AVERROR_INVALIDDATA;
     }
 
-    vdr_rpu_id = -1;
+    vdr_rpu_id = mapping->vdr_rpu_id;
     for (int i = 0; i <= DOVI_MAX_DM_ID; i++) {
         if (s->vdr[i] && !memcmp(s->vdr[i], mapping, sizeof(*mapping))) {
             vdr_rpu_id = i;
             break;
-        } else if (vdr_rpu_id < 0 && (!s->vdr[i] || i == DOVI_MAX_DM_ID)) {
+        } else if (s->vdr[vdr_rpu_id] && !s->vdr[i]) {
             vdr_rpu_id = i;
         }
     }
-- 
2.45.1

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