[FFmpeg-devel] [PATCH 2/4] avcodec/avcodec: Avoid av_frame_unref(NULL)

From: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
To: ffmpeg-devel@ffmpeg.org
Cc: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
Subject: [FFmpeg-devel] [PATCH 2/4] avcodec/avcodec: Avoid av_frame_unref(NULL)
Date: Wed, 13 Apr 2022 16:49:50 +0200
Message-ID: <AS8PR01MB7944B4E3D6940DA43A3B6D9A8FEC9@AS8PR01MB7944.eurprd01.prod.exchangelabs.com> (raw)
In-Reply-To: <AS8PR01MB794407382EC42678297ECB248FEC9@AS8PR01MB7944.eurprd01.prod.exchangelabs.com>

It works, but it is not documented to work.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
---
 libavcodec/avcodec.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/libavcodec/avcodec.c b/libavcodec/avcodec.c
index e0f38ac42a..ded6b5b307 100644
--- a/libavcodec/avcodec.c
+++ b/libavcodec/avcodec.c
@@ -420,6 +420,8 @@ void avcodec_flush_buffers(AVCodecContext *avctx)
                    "that doesn't support it\n");
             return;
         }
+        if (avci->in_frame)
+            av_frame_unref(avci->in_frame);
     }
 
     avci->draining      = 0;
@@ -432,7 +434,6 @@ void avcodec_flush_buffers(AVCodecContext *avctx)
     while (av_fifo_read(avci->pkt_props, avci->last_pkt_props, 1) >= 0)
         av_packet_unref(avci->last_pkt_props);
 
-    av_frame_unref(avci->in_frame);
     av_packet_unref(avci->in_pkt);
 
     if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
-- 
2.32.0

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