From f367aa5db69d5c4825b154333a309b2a53f4cb5d Mon Sep 17 00:00:00 2001
From: Anton Khirnov <anton@khirnov.net>
Date: Tue, 28 Feb 2023 11:30:48 +0100
Subject: [PATCH] lavc/libvpxenc: drop frame_number

It is not used, except to check whether the packet is valid before
writing HDR metadata to the packet in storeframe(). However, that check
serves no purpose, as the encoded packet is already treated as valid
higher up in this function.
---
 libavcodec/libvpxenc.c | 9 +--------
 1 file changed, 1 insertion(+), 8 deletions(-)

diff --git a/libavcodec/libvpxenc.c b/libavcodec/libvpxenc.c
index 5e6467a3d0..f6a9e5c0b7 100644
--- a/libavcodec/libvpxenc.c
+++ b/libavcodec/libvpxenc.c
@@ -63,7 +63,6 @@ struct FrameListData {
     uint32_t flags;                  /**< flags for this frame */
     uint64_t sse[4];
     int have_sse;                    /**< true if we have pending sse[] */
-    uint64_t frame_number;
     struct FrameListData *next;
 };
 
@@ -84,7 +83,6 @@ typedef struct VPxEncoderContext {
     int deadline; //i.e., RT/GOOD/BEST
     uint64_t sse[4];
     int have_sse; /**< true if we have pending sse[] */
-    uint64_t frame_number;
     struct FrameListData *coded_frame_list;
     struct FrameListData *alpha_coded_frame_list;
 
@@ -1220,9 +1218,8 @@ static inline void cx_pktcpy(struct FrameListData *dst,
     dst->sz       = src->data.frame.sz;
     dst->buf      = src->data.frame.buf;
     dst->have_sse = 0;
-    /* For alt-ref frame, don't store PSNR or increment frame_number */
+    /* For alt-ref frame, don't store PSNR */
     if (!(dst->flags & VPX_FRAME_IS_INVISIBLE)) {
-        dst->frame_number = ++ctx->frame_number;
         dst->have_sse = ctx->have_sse;
         if (ctx->have_sse) {
             /* associate last-seen SSE to the frame. */
@@ -1232,8 +1229,6 @@ static inline void cx_pktcpy(struct FrameListData *dst,
             memcpy(dst->sse, ctx->sse, sizeof(dst->sse));
             ctx->have_sse = 0;
         }
-    } else {
-        dst->frame_number = -1;   /* sanity marker */
     }
 }
 
@@ -1289,13 +1284,11 @@ static int storeframe(AVCodecContext *avctx, struct FrameListData *cx_frame,
         AV_WB64(side_data, 1);
         memcpy(side_data + 8, alpha_cx_frame->buf, alpha_cx_frame->sz);
     }
-    if (cx_frame->frame_number != -1) {
         if (ctx->hdr10_plus_fifo) {
             int err = copy_hdr10_plus_to_pkt(ctx->hdr10_plus_fifo, pkt);
             if (err < 0)
                 return err;
         }
-    }
 
     return pkt->size;
 }