From d541c5409324bd7fb0cf0b594a0cddbf977bff6b Mon Sep 17 00:00:00 2001
From: igorshevach <igorshevach@gmail.com>
Date: Mon, 9 Sep 2024 12:49:00 +0300
Subject: [PATCH] check for media info self assignment

---
 transcoder/transcode/transcode_session.c | 27 +++++++++++++-----------
 1 file changed, 15 insertions(+), 12 deletions(-)

diff --git a/transcoder/transcode/transcode_session.c b/transcoder/transcode/transcode_session.c
index f781d485..33aa6822 100644
--- a/transcoder/transcode/transcode_session.c
+++ b/transcoder/transcode/transcode_session.c
@@ -112,18 +112,21 @@ void transcode_session_get_ack_frame_id(transcode_session_t *ctx,kmp_frame_posit
 int transcode_session_set_media_info(transcode_session_t *ctx,transcode_mediaInfo_t* newMediaInfo)
 {
     if (ctx->currentMediaInfo) {
-        AVCodecParameters *currentCodecParams=ctx->currentMediaInfo->codecParams;
-        AVCodecParameters *newCodecParams=newMediaInfo->codecParams;
-        bool changed=newCodecParams->width!=currentCodecParams->width ||
-            newCodecParams->height!=currentCodecParams->height ||
-            newCodecParams->extradata_size!=currentCodecParams->extradata_size;
-
-        if (currentCodecParams->extradata_size>0 &&
-            newCodecParams->extradata!=NULL &&
-            currentCodecParams->extradata!=NULL
-            // FIXME: uncomment memcp!!!
-            /*&& 0!=memcmp(newCodecParams->extradata,currentCodecParams->extradata,currentCodecParams->extradata_size)*/)
-            changed=true;
+        bool changed = false;
+        if(ctx->currentMediaInfo != newMediaInfo) {
+            AVCodecParameters *currentCodecParams=ctx->currentMediaInfo->codecParams;
+            AVCodecParameters *newCodecParams=newMediaInfo->codecParams;
+            changed=newCodecParams->width!=currentCodecParams->width ||
+                newCodecParams->height!=currentCodecParams->height ||
+                newCodecParams->extradata_size!=currentCodecParams->extradata_size;
+
+            if (currentCodecParams->extradata_size>0 &&
+                newCodecParams->extradata!=NULL &&
+                currentCodecParams->extradata!=NULL
+                // FIXME: uncomment memcp!!!
+                /*&& 0!=memcmp(newCodecParams->extradata,currentCodecParams->extradata,currentCodecParams->extradata_size)*/)
+                changed=true;
+        }
 
         if (!changed) {